Факультет "Управління енергетичними процесами" (раніше "Електрифікація залізниць")

Permanent URI for this communityhttp://crust.ust.edu.ua/handle/123456789/521

UKR: У подальшому увійшов "до складу факультету Управління енергетичними та економічними процесами".

ENG: Faculty of Energy Process Management (Previously, Faculty "Electrification of the railways")
Subsequently, the Faculty became "part of the Faculty of Energy Process Managemen".

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2-х режимний тягово-левітаційний модуль перспективної магнітно-левітаційної транспортної системи
(Кременчуцький національний університет імені Михайла Остроградського, 2022) Плаксін, Сергій Вікторович; Муха, Андрій Миколайович; Устименко, Дмитро Володимирович; Шкіль, Юрій В.; Голота, Олександр Олександрович; Чуприна, Єгор М.
UKR: Сучасний електрорухомий склад має можливість розвивати швидкості руху понад 500 км/год, що створює умови для конкурентної боротьби з іншими видами транспорту на малих та середніх відстанях. Такі високошвидкісні системи на базі ефекту магнітної левітації можуть використовувати електромагнітну або електродинамічну підвіску. Перша вимагає високої точності побудови шляхової структури та складної системи управління, а друга менш критична до точності побудови шляхової структури та рівня складності системи управління, але ефектний підвіс магнітоплану створюється лише на відносно високій швидкості руху. На початкових, розгінних ділянках поїзди з електродинамічним підвісом підтримуються в робочому положенні за допомогою спеціальних колісних систем, що є суттєвим недоліком. Метою досліджень є визначення можливих схемних рішень шляхового модуля, який може забезпечувати комбінований режим роботи – режим тяги та режим левітації, не тільки у сталому режимі руху, але й на ділянках розгону чи гальмування без використання опорних колісних систем. В статті представлені деякі результати розробки тягового-левітаційного модуля на базі дворежимної шляхової структури, яка може працювати зі зміною полярності (напрямку) магнітного потоку, який взаємодіє з магнітним потоком надпровідних магнітів встановлених на магнітоплані. За результатами досліджень представлені схемні та конструктивні рішення науково-обґрунтованого тягово-левітаційного модуля для магнітнолевітаційної транспортної системи типу Маглев, з можливістю отримувати левітацію магнітоплану на розгінний ділянці.
AC/DC Converter for DC Traction Power Supply System With High-Speed Train Operation
(National Technical University of Ukraine "Igor Sikorsky Kiev Polytechnic Institute", Kiev, 2019) Sokol, Yevgen; Sychenko, Viktor G.; Voitovych, Yurii; Kosariev, Yevhen M.; Styslo, Bohdan; Hubskyi, Petro V.
EN: Purpose of the work is improved approaches to ensure the required quality parameters of voltage in the traction network based on modern technologies and equipment. The pulsating mode of the power consumption in the railroad power supply network is the cause of the occurrence of voltage pulsations in the contact network. The use of active rectifiers in the electric power supply system of the railroad is proposed. The control system is developed by the converter, which allows to stabilize the output voltage in the DC link and also provides the unit power factor consumed by the converter and the THD consumption current at the level of 8%. A mathematical model of the converter was developed and a study of its main modes of operation was performed.
Analysis and Ways for Advancing of Mathematical Model of Pulverized Coal Ignition and Combustion
(Інститут геотехнічної механіки ім. М.С. Полякова НАН України, 2022) Zhevzhyk, Oleksandr V.; Potapchuk, Iryna Yu.; Pertsevyi, Vitalii O.; Sekar, Manigandan
ENG: An analysis of mathematical models of ignition and burning of a single particle and a coal cloud is given. Models which take into account the presence of ash in particles, the influence of the ratio of the amount of coal and primary air (excess coefficient) and the size of coal particles on the ignition process are presented and analyzed. It is shown that simplifications in mathematical models in most cases lead to a loss of accuracy and therefore the results cannot be used for practical purposes. Simulation of complex air supply processes by approximation of uniformity also leads to questionable results. A significant influence on the ignition and combustion of coal particles affects the content and intensity of the release of volatile substances and the chemical reactions that occur in this case. The rate of volatiles yield is proposed to be calculated according to the Arrhenius law, and the activation energy and frequency factor are considered to be those that do not depend on the type of coal, but are determined only by the temperature of the particle. Taking into account heat transfer by radiation and a decrease in the particle diameter during combustion has a positive effect on the results obtained. According to the results, the reactivity and losses with underburning significantly depend on the initial diameter of coal particles. Most models do not take into account the change in temperature inside the particles during heating, ignition and combustion in the apparatus, but there are works that are specifically devoted to the study of temperature fields inside the particles and the influence of the particle shape on the combustion rate. Modeling showed that motion relative to the gas leads to an intensification of heat transfer between the particles and the environment, while the volatile matter yield time decreases at a high ambient gas temperature. A decrease in the rate of combustion chemical reactions is noted with an increase in the concentration of water vapor in the gaseous medium around the particle, i.e. oxygen diffusion is the limiting factor in particle combustion. The most complete and physically correct gas dynamics during combustion is calculated in models where known turbulence models are used, such as the standard k-ε model, RNG k-ε model, BSL model and SST model. At the end of the article, the concepts for improving the model of ignition and combustion of coal particles are outlined.
Analysis of Operational Characteristics of SRM in Emergency Modes of the Converter Unit
(IEEE, 2022) Vlasenko, Vladimir; Tytiuk, Valerii; Kuznetsov, Vitalii V.; Kuntush, Yelena; Chornyi, Oleksii; Busher, Victor
ENG: The paper analyzes the issues of maintaining the operability of a switched reluctance motor (SRM) in various emergency situations. The researches were carried out using simulation modeling in the Matlab environment, the developed model was used for both normal and emergency operation modes. A series of dynamic tests of the motor torque has been carried out, and the values of the electromagnetic torque pulsation coefficient have been calculated. The possibility of maintaining the operability of SRM in the event of various emergency situations in the phases of the motor has been proved. The static mechanical characteristics of the motor are built and the calculation of the droop of the mechanical characteristics for possible emergency modes is performed. © 2022 IEEE.
Analysis of the Electric Energy Consumption Components for Mine Train Traction
(Dnipro National University of Railway Transport named after Academician V. Lazaryan, 2019) Arpul, Serhii V.; Artemchuk, Viktor V.; Babyak, Mykola O.; Vasilyev, Viacheslav E.; Hetman, Hennadii K.; Marikutsa, Serhii L.
EN: Abstract. The paper considers the issues of reducing the energy intensity of transportation at opencast mining enterprises, the relevance of which has now increased due to the rise in the cost of fuel and energy resources. It presents the study results concerning the cost structure of the electricity consumed by electric mine transport, which form the basis for the development of technical and operational measures to reduce the energy intensity of the transportation process. It is shown that the work to reduce the electricity consumption for mined rock transportation should be aimed at: - Reduction of losses in the power circuits of the traction rolling stock due to the use of more advanced electric rolling stock and regulation of the degree of utilization of the installed traction power; - Introduction of new contact materials for electrical circuits with the lowest possible resistivity, including for current collector plates; - Introduction of measures to reduce energy consumption for power supply of auxiliary circuits; - Development and implementation of rational train control techniques. The introduction of energy-saving measures should include the development and application of effective methods for calculating individual norms of energy consumption and incentives for energy saving of the employees involved in the organization of the transportation process.
Anthropological Aspects of High-Tech Facilities Operation Support
(Дніпропетровський національний університет залізничного транспорту імені академіка В. Лазаряна, Дніпро, 2017) Matusevych, Oleksandr O.; Matusevych, Oleksii O.
ENG: Purpose. The article, based on the analysis of actual materials, highlights the importance of taking into account the influence of the human factor in occurrence of emergency situations in terms of transport infrastructure. Methodology. The research is based on the interdisciplinary system analysis. It was comprehended how the service technicians of high-tech systems can create latent unsafe conditions that combined with other hazardous activities can cause an emergency and injury. The authors attempt to dramatize the issue in order to find a solution – on the one hand, man is the most crucial part of a complex technological system, on the other hand – he is the most unreliable part of the system, especially in terms of the extreme power of modern vehicles and their speeds. The above situation demonstrates the need for a new level of anthropic comprehension of the high-tech systems in the schematic set "human-system-environment". Originality. The paper analysed the problems and conditions of human factors that allow detecting the causes of technicians’ errors. The authors highlighted proposals for psychocorrective work among the personnel of the facilities. The problem of further development of continuous improvement of the equipment maintenance systems, based on integrated approach taking into account the human factor, is also not overlooked. Conclusion. In the course of understanding the human factor and its influence on the processes, the most urgent tasks are as follows: implementation of new system software, automation of vehicles and development of high production culture based on moral qualities of experts.
The Application of Fuel Burning Pulsating Resonance During Drying and Heating Processes of Steel-Teeming Ladles
(National Metallurgical Academy of Ukraine, Dnipro, 2016) Gichev, Yuriy A.; Hichov, Yurii O.; Stupak, Mykhailo Yu.; Pertsevoi, Vitaly A.; Matsukevich, Maksym Yu.
EN: The results of the experimental-industrial tests of the fuel burning pulsating resonance system at the posts of drying and heating of steel-teeming ladles are given in the paper. The high performance and efficiency of the system were established. Reduction of the natural gas saving was 2.7 ÷ 26.1% when ladles drying, and 19.5 ÷ 37.8% when heating.
Assessing the Feasibility of Electric Road Transport in Europe Using the Integral Emissions Index
(The Silesian University of Technology, Katowice, Poland, 2025) Bosyi, Dmytro O.; Zemskyi, Denys R.; Biltsan, Kostiantyn M.; Borycheva, Svitlana V.
ENG: This article reviews the development of electric road transport and assesses its feasibility in European countries based on an analysis of CO₂ emissions using an integral index. Electric road transport is evolving in three main directions: battery-powered vehicles, hydrogen fuel cell vehicles, and road electrification. Battery electric vehicles are widely used, but their future may be constrained by issues related to cost, charging infrastructure, and raw material availability. Hydrogen-powered vehicles offer fast refueling but require substantial investments and strict safety standards. Road electrification includes both contact and wireless energy transfer systems. Contact-based systems, in particular, provide high power and low energy losses, making them optimal for vehicles with significant energy demands. The environmental efficiency of electric vehicles largely depends on the electricity source. Countries with a high share of renewable energy, such as Norway and France, demonstrate greater environmental efficiency in electric vehicle adoption. Special attention should be given to road electrification, which reduces the duration of battery-powered autonomous driving and allows for smaller battery sizes, thereby extending their lifespan. This approach not only increases battery longevity but also has a positive environmental impact by reducing emissions associated with battery production and disposal.
Asymmetric Power Supply Circuit Design for Electric Rolling Stock on the Electrified DC Rail
(IEEE, 2020) Sychenko, Viktor G.; Danylov, Oleksiy; Bekh, Petro V.; Kosariev, Yevhen; Liashuk, Vitalij; Drubetskaya, Tanya
ENG: Modern requirements for the traction power supply system of direct current in providing the high-speed movement are reduced to the need of ensuring a normalized voltage level of 2900 V on current collectors of electric locomotives. At the same time, the power supply system has to be stable on changes in power consumption and have the necessary specific energy intensity. The purpose of the work is to explain the transition to a new circuit design of the traction network using additional generators of electric energy. The proposed asymmetrical power supply system of the electric rolling stock allows to provide the required voltage level on the electric locomotive current collectors, to reduce the range of its changes and to reduce the power losses by 14.3% compared to the symmetrical centralized power supply circuit design with passive boosting of the traction network.
Automatied Workstation for Calculating Rational Mode of Traction Power Supply Systems
(Дніпропетровський національний університет залізничного транспорту імені академіка В. Лазаряна, Дніпропетровськ, 2013) Kuznetsov, Valeriy
EN: Improving the competitiveness and efficiency of railway transport of Ukraine is impossible without solving a number of priority issues, including: providing a rational railway technology taking into account energetic, economic and environmental criteria, infrastructure development for high-speed motion, improving consumption energy planning, the implementation of effective management at all levels of the production cycle. This list very important problem is energy saving in power supply traction systems. This problem is complex, multi-level and multi-factor in nature. The definition of rational modes of traction power supply DC systems has previously been performed without taking into account the realities of our time, when there is a market economy, there are different options for electricity payment (by flat-rate tariffs, differentiated tariffs or wholesale prices for electricity). Now, the energy component in the transportation tariff has reached 20%, and taking into account global trends will continue to rise. When making decisions in firstly we need to take into account not only technical indicators, but also economic (cost of electricity consumed). The paper presents the principles of rational modes of the power supply systems. This make a basis for creation a monitoring system for ensuring the rational modes, which could for each time point evaluate the power supply system mode and propose the measures to ensure the most profitable mode. It's done the description of the specialized software that allows you to define rational modes of traction power supply system. The discussed program uses a genetic algorithm to determine the rational modes. This article contains screenshots of developed software.
Badania Rezerw Zasilania Poprzez Racjonalne Rozmieszczenie Pociagow na Odcinku
(Польша, 2013) Maksimczuk, W. F.; Kuzniecov, Walery G.; Kalasznikov, K. A.; Kiriluk, T. l.
PL: Przeprowadzono badanie czynnikow okreslajctcych wielkosc strat mocy w sieci trakcyjnej. Nastepnie okreslono zaleinosci pomiedzy wielkoscict strat mocy w sieci trakcyjnej a liczbct pocictgow i ich dyslokacjct na odcinkach miedzypodstacyjnych.
Badanie Skali Zmienności Obciążeń Wybranej Tramwajowej Podstacji Trakcyjnej na Podstawie Rzeczywistych Wyników Pomiarowych dla Spójnego Okresu Czasowego Obejmującego Szesnaście Tygodni
(Politechniki Krakowskiej im. Tadeusza Kościuszki, Kraków, Polska, 2015) Drapik, Slavomir; Kuznetsov, Valeriy; Markowski, Paweł; Prusak, Janusz; Woszczyna, Bartosz
PL: Zmienność obciążeń trakcyjnych powoduje, że projektanci muszą dobierać moc zespołów prostownikowych dla podstacji trakcyjnych DC ze znacznym przewymiarowaniem. W artykule, na podstawie wyników pomiarowych eksploatowanej tramwajowej podstacji trakcyjnej, przedstawiono skalę przewymiarowania mocy zespołów prostownikowych tej podstacji. Stwierdzono występowanie znacznych odcinków czasowych, w których moce zespołów prostownikowych nie są wykorzystywane. Obliczono współczynniki przeciążeń chwilowych dla różnych odcinków czasowych, następnie przeprowadzono ich analizę statystyczną. Zwrócono uwagę na rozwiązanie techniczne mogące w przyszłości ograniczyć straty energii w podstacjach trakcyjnych DC.
Calculation of the Traction Power Supply Systems Using the Functions of Resistance
(Instytut Kolejnictwa, Warszawa, 2015) Bosiy, Dmytro O.; Kosariev, Yevhen M.
EN: The article is devoted to the development of a new method of calculating the instantaneous traction power supply circuits of the system. On the basic of the design scheme of generalized traction substations zone provided analytical functions of the resistance. Using the known functions of the current distribution of functions putted into the concept of resistance feeders traction substations. The functions of resistance and current distribution used in a more straightforward method of calculating the instant schemes that allow to formalize electrical calculations of electrical traction power supply systems.
Calculation of the Traction Power Supply Systems Using the Functions of Resistance (preprint)
(Instytut Kolejnictwa, Warszawa, 2015) Bosiy, Dmytro O.; Kosariev, Yevhen M.
EN: The article is devoted to the development of a new method of calculating the instantaneous traction power supply circuits of the system. On the basic of the design scheme of generalized traction substations zone provided analytical functions of the resistance. Using the known functions of the current distribution of functions putted into the concept of resistance feeders traction substations. The functions of resistance and current distribution used in a more straightforward method of calculating the instant schemes that allow to formalize electrical calculations of electrical traction power supply systems.
Comparative Tests of Contact Elements at Current Collectors in Order to Comprehensively Assess their Operational Performance
(PC "Technology Center", Ukrainian State University of Railway Transport, Kharkov, Ukraine, 2018) Babyak, Mykola O.; Horobets, Volodymyr L.; Sychenko, Viktor G.; Gorobets, Yevhen
EN: We have studied the interaction between contact elements in the pantographs of electric transport under operation at the sections of railroads powered by direct and alternating current. In contrast to known techniques for bench tests, we investigated the mechanism of current collection and wear resistance at the new testing installation over a minimally narrow region of the sliding contact, simulating the phenomenon of a pantograph “cut”. This installation can be used both industrially when manufacturing new contact elements and under laboratory setting when studying wear resistance. The experimental research confirmed that the wear intensity of contact elements at pantographs depends on current load over a contact area, the magnitude of contact pressure, the area of a contact surface, and motion speed. We have practically proven a possibility to maintain a reliable contact connection in the sliding contact under extreme operating conditions when using a reliable contact material for the current collector pads. It has been proposed to use the powder composition BrIG based on bronze, iron, and graphite, for making contact elements for pantographs that could provide for reliable contact when interacting with the contact wire. Application of new and high-quality contact materials affects the tribology and stability of interaction between plates and the contact wire. Owing to our study, a possibility has been established to manufacture a reliable contact element BrIG, which would prolong the time of interaction in the contact pair “pantograph at electric transport ‒ contact network”. The practical significance of this research relates to the proven efficiency of utilizing the new contact material BrIG for electric railroad transport network, in trolley buses and trams. Thus, one can argue about the possibility to prolong the time of operation for the contact pair “pad in a pantograph at electric transport ‒ contact network” by applying the new contact material BrIG.
Computer Modeling of Air Pollution in Case of Dust Cloud Movement in Open Pit Mine
(Dnipro National University of Railway Transport named after Academician V. Lazaryan, 2019) Biliaieva, Viktoriia V.; Kirichenko, Pavlo S.; Berlov, Oleksandr V.; Gabrіnets, Volodymyr O.; Horiachkin, Vadym M.
ENG: Purpose. Explosions in open pits lead to the formation of dust clouds. These clouds lead to intense air pollution. An important task is the development of methods for predicting the dynamics of atmospheric air pollution during ex-plosions in open pits. The purpose of this work is development of a numerical model to predict atmosphere pollution after explosion in open mine pit. The task is to develop a numerical model that would allow for the calculation to take into account the geometrical shape of the open pit mine, the parameters of the meteorological situation (wind speed, atmosphere), the shape of the dust cloud that is formed in the open pit mine at the site of the explosion. Methodology. Mathematical modeling of dust cloud dispersion during an explosion in an open pit mine is based on the use of fundamental equations of aerodynamics and mass transfer. The airflow velocity field in the open pit mine is modeled using the Laplace equation for the velocity potential. The formation of the concentration field of dust is mod-eled on the basis of the equation of convective-diffusion dispersion of an impurity. For numerical integration of model-ing equations, difference schemes are used. The Laplace equation for the velocity potential is numerically integrated using the Richardson method. For the numerical integration of the convective-diffusion dispersion equation for an im-purity, an implicit difference splitting scheme is used. Findings. A CFD model has been developed that allows you to calculate the formation of pollution zones during the movement of a dust cloud in the open pit mine. A feature of the developed model is the speed of calculation. For practical use of the developed model, standard input information is required. Originality. In contrast to the existing models in Ukraine, the developed numerical model allows taking into account the geometrical shape of the open pit mine and the geometrical shape of the dust cloud when making predictive calculations to assess the level of air pollution caused by explosions in open pits. Practical value. The developed nu-merical model can be implemented on computers of low and medium power. For practical use of the numerical model, standard information on meteorological conditions in open pit mine is required. The numerical model can be used for environmental assessment of the effect of explosions in open pit mine on environmental pollution and work areas.
Computing and Optimization for DC Power Systems of Electric Transport
(World Scientific Publishing Europe Ltd., London, 2020) Bosyi, Dmytro O.; Sablin, Oleh I.; Kosariev, Yevhen
ENG: In the modern world, further development of society is impossible without environmentally friendly modes of transport and their effective interaction within the framework of Smart Energy and ECO-driving concepts. Written at a time of rapid development of information technologies in various fields, this book serves as a kind of bridge for the introduction of artificial intelligence into the electric transport power supply systems. The calculation models and methods proposed make it possible to choose the most efficient modern equipment for electric power supply of electric vehicles, which, as a result, saves investment costs and reduces time to make decisions for designing complex objects. Insight is also given into building and adjusting Smart Energy class equipment to achieve optimal and economical modes.
The Concept of a Hybrid Traction Power Supply System
(Les Ulis: EDP Sciences-Web of Conferences, France, 2019) Sychenko, Viktor G.; Kuznetsov, Valeriy; Kosariev, Yevhen; Bekh, Petro V.; Sayenko, Yuriy; Styslo, Bohdan O.; Pavlichenko, Mihail; Vasilev, Ihor; Pulin, Mykola M.
ENG: Abstract. The growing shortage of energy resources to provide heavy traffic and high-speed traffic necessitates the development of a new power supply scheme for a traction network using sources of distributed generation of electric energy. Application of asymmetric distributed traction power system with the use of distributed generation allows to increase electric energy efficiency of the feed system of rolling stock, reduce its material capacity and increase the reliability of the functioning of the railway system as a whole. The proposed structure of the hybrid electric traction system involves the creation of a new paradigm aimed at ensuring high demands on the voltage and specific power in the traction network, which will allow to improve the quality and safety of the transportation process when increasing the energy performance indicators. This paradigm will allow to form a new philosophy of building traction power systems. The key elements of this philosophy are decentralization of generation and consumption of electric energy, the use of intelligent electric equipment, distributed power supply management in a single information space of the energy process during transportation. The peculiarity of the proposed work is the optimal combination of technological processes of transmission, consumption of electric energy and transportation, taking into account the specific conditions of functioning of the electrified section: points of connection of power sources and their type, profile of the track, schedule of trains, types of rolling stock and equipment. Conceptually, the hybrid traction power system is an electric hub, in which the inputs are generating points, and the output is the power supply system of the rolling stock. The internal structure of the electric power objects of the hub is determined by the type of transformation and accumulation of electric energy and ways of managing these objects in real time.
Continuous Improvement of Technical Servicing and Repair System of Railway Substation on the Basis of FMEA Methodology
(Instytut Naukowo-Wydawniczy "TTS" Sp. z o.o, Radom, Poland, 2016) Matusevych, Oleksandr O.; Sychenko, Viktor H.; Białoń, Andrzej
EN: The article shows the ways of solving the problem of upgrading and efficiency of the technical servicing and repair of railway substation of electrified railways in operation. Proposed to use of FMEA methodology to continuous improvement the technical servicing and repair process of electrical equipment throughout the life cycle. By the given method, the calculation of critical violations operations of subprocess maintenance work of the supply transformer and subprocesses criticality of maintenance of power electric equipment of railway substations is carried out.
Control System Fidelity of Electric Energy
(Дніпропетровський національний університет залізничного транспорту ім. акад. В. Лазаряна, Дніпро, 2017) Chichil, A. A.; Fedorenko, A. A.; Skrypnyk, A. A.; Drubetskaya, Tanya
EN: It is difficult to install consumers with faulty accounting systems, to discover areas of distribution networks with increased technological losses, and the place of theft of electric energy. To develop a methodology that allows, with existing accounting systems, to increase the informativeness of the component of the difference of distributed and consumed energy with virtually no additional expenses and, in the presence of an automated accounting system, to refuse periodic verification of the measured measuring devices and current and voltage transformers. The system for monitoring the reliability of electrical energy accounting at transformer substations has been further developed, which breaks the task at a level and solves them in stages. The developed system allows abandoning the periodic calibration of measured accounting devices and current and voltage transformers.
Correlation Theory of Casual Processes in Electrical Power Problems for Systems of Electric Transport (preprint)
(IEEE, Lviv, 2015) Kostin, Nickolai A.; Mishchenko, Tatyana M.; Shumikhina, Lyudmila
ENG: A new method is proposed for determining the energy indices in electric transport systems, based on the correlation theory of random processes. According to this method, the components of apparent power and power factor are expressed through correlation functions and mathematical expectations of investigated traction voltages and currents. Numerical calculations of active, reactive and apparent power as well as the ratio of reactive power for a traction substation feeder show that the method possesses high accuracy: the error is less than 2%.
Determination of Energy and Electric Capacity of On-Board Supercapacitor Regenerative Energy Storage
(Дніпровський національний університет залізничного транспорту імені академіка В. Лазаряна, Дніпро, 2021) Kostin, Mykola O.; Mukha, Andrii M.; Sheikina, Olha H.; Kurylenko, Olena Ya.
ENG: Purpose. Development of a method for determining the main functional parameters of on-board supercapacitor recuperative energy storage based on the asymptotic theory of extreme statistics by Gumbel, taking into account sto-chastic nature of changes in recuperated voltage and current. Methodology. To achieve this purpose, methods, devices and computer systems for temporary registration of recuperated voltages and currents on operating electric locomotives, methods of the theory of random processes and methods of probabilistic and statistical processing of registro-grams of voltages and currents were used. Findings. A computational and experimental method for estimating recu-perative energy has been proposed and practically applied. A probabilistic method has been developed for determining the energy and electric capacity of on-board supercapacitor recuperative energy storage units. Numerical probabilistic and statistical calculations of the energy and electric capacity of on-board storage for the VL8 and VL11M6 electric locomotives during their operation in the sections of Prydniprovska railway have been carried out. It was found that the energy and electric capacity of on-board storage devices are distributed according to an exponential law with a clear prevalence of their minimum values and in compliance with direct proportionality between them. Originality. For the first time, an autonomous phase of recuperative braking mode of an electric rolling stock has been developed, which makes it possible to significantly reduce the mass and dimension of a supercapacitor storage. The asymptotic theory of extreme statistics by Gumbel was adapted to the method for calculating energy and electric capacity of an on-board storage device, which made it possible to take into account the influence of stochastic nature of changes in the recuperated voltage and current. The probabilistic influence regularities of the change nature in the recuperation energy on the capacity of on-board storage in the phase of recuperative braking have been established. Further development was obtained by a computational-experimental method for assessing the recuperative energy, based on monitoring and using the time dependences of voltage and current obtained in real modes of recuperative braking. For the first time in electric traction systems, it was proposed to carry out the transition from the recuperative braking mode to the recuperative regeneration mode. Practical value. The developed method and technique based on it make it possible to evaluate functional parameters of on-board storage device of all types of electric rolling stock, considering stochastic nature of recuperated voltages and currents. Numerical-graphic dependences of the energy in-tensity and capacity of the on-board storage are recommended for predicting and evaluating these parameters for various modes of recuperative braking. Since the task of designing an on-board storage unit (in terms of mass and dimensions) is ambiguous, therefore, in each specific case of the type of electric locomotive and recuperation modes, it must be solved individually, taking into account the probability of the corresponding capacitance values.
Determination of Features of Formation of Energy Supply Systems with the Use of Renewable Energy Sources in the Transition Period
(ПП «Технологічний Центр», Харків, 2021) Nakashydze, Liliya V.; Gabrіnets, Volodymyr O.; Mitikov, Yurii O.; Alekseyenko, Sergey; Liashenko, Iryna
ENG: An urgent scientific and practical problem is the formation of energy efficient systems for ensuring climatic conditions in premises based on the use of renewable energy sources. The work has improved the technical and methodological approach to the calculations of energy supply and storage systems when using energy-active fences. The special effectiveness of these fences has been shown in the transitional periods of the year, that is, in spring and autumn. A mathematical model has been developed to reliably predict the process of ensuring temperature comfortable conditions (heat balance) when using nonparametric statistics methods. It will improve the quality of forecasting the effect of external air temperature during the transitional periods of the year. The temperature inside the room is taken into account in the presence of a multilayer energy-active fence. To determine the approach to the use of heat in energy supply systems during the transition period, thermal parameters from the inner and outer sides of the building structure are considered. This makes it possible to take into account changes in the heat transfer of these structures when designing a power supply system and determining the optimal modes of its functioning in various natural conditions. The function of energy-active fences associated with the generation of additional heat into the system, obtained through the conversion of solar radiation energy, is considered. To increase this generation, special multilayer designs of energy-active fencing have been proposed. The proposed thermal modernization with the use of energy-active fences allows, on average, over the cold period of the year, to reduce energy consumption by 3.5 times for industrial and residential buildings.
Development a Forecasting Method of Friction Pairs Wear of the Current Collection
(Wydawnictwo Instytutu Kolejnictwa, Warszawa, 2017) Antonov, Andrii V.; Bolshakov, Yu. L.; Sychenko, Viktor G.
EN: Development a forecasting method of friction pairs wear of the current collection on electric rail transport.Relevance. The most costly in the operation of the electrified railway transport are maintenance and repair of contact networks and pantographs. The costs magnitude depends of the catenary type, electric rolling stock, materials of the friction pair "contact wire – contact strip" and environment parameters. For today there is no consensus regarding the choice of the pantograph contact strips type for the specific operating conditions of the electric rolling stock. Therefore, the resource elements of the friction pair inefficiently used. A solution to this problem would be to a forecasting method of friction pairs wear of the current collection. Scientific novelty. Developed a method forecasting wear of contact wires and contact strips basis on the of the neural network model. To build a neural network was used the experimental dependences and was taken into account the change pressing force of the pantograph along span of the catenary, current value, current collecting elements type and modify the parameters environment. Practical importance. The proposed method allows to estimate the wear of the contact pair without the necessity for additional bench tests. This will significantly increase the effectiveness of the design new and modernization of already-exploited contact network sections.
Development of a Diagnostic Procedure for Assessing the Performance of a Magnitoplane Navigation System
(TECHNOLOGY CENTER PC, Kharkiv, 2025) Plaksin, Serhiy; Mukha, Andrii M.; Ustymenko, Dmytro V.; Podchasov, Andrii; Holota, Oleksandr
ENG: The object of research is the process of ensuring the reliability of high-speed magnetic levitation. Navigation tasks of high-speed ground transport require high accuracy and reliability along with high speed of obtaining data on the location of the magnetic levitation. The problem to be solved is to ensure the integrity of the magnetic levitation navigation system by means of essential integration into its structure of the diagnostic subsystem, the basis of which is the phase ranging method. It has been established that the diagnostic procedure for determining the operability of the navigation system of a high-speed vehicle in real time is fully ensured by the use of the phase ranging method. A method of continuous precision positioning of a high-speed magnetic levitation vehicle based on the phase ranging method for an arbitrary configuration in three-dimensional space of a fixed track structure, as well as a method of ensuring the integrity of the navigation system of a maglev train, has been substantiated. A new approach to solving the location problem is proposed, which allows using the train communication channel with the traffic control center as a distributed location sensor as an integral element of the radio wave information and control system. The structure of the information packet cycle is proposed. The volume of the information flow and the degree of redundancy introduced into the information flow to ensure the required reliability of information transmission are determined. The developed diagnostic procedure meets the requirements for the safety and reliability of operation of high-speed ground transport based on magnetic levitation technology, the movement of which is controlled using a navigation system topologically connected with the configuration of the track structure.
Development of a Mathematical Model of the Generalized Diagnostic Indicator on the Basis of Full Factorial Experiment
(Versita, Poland, 2017) Sychenko, Viktor G.; Mironov, Dmytro V.
EN: Purpose. The aim of this work is to develop a mathematical model of the generalized diagnostic indicator of the technical state of traction substations electrical equipment. Methodology. The main tenets of the experiment planning theory, methods of structural-functional and multi-factor analysis, methods of mathematical and numerical modeling have been used to solve the set tasks. Results. To obtain the mathematical model of the generalized diagnostic indicator, a full factorial experiment for DC circuit breaker have been conducted. The plan of the experiment and factors affecting the change of the unit technical condition have been selected. The regression equation in variables coded values and the polynomial mathematical model of the generalized diagnostic indicator of the circuit breaker technical condition have been obtained. On the basis of regression equation analysis the character of influence of circuit breaker diagnostic indicators values on generalized diagnostic indicator changes has been defined. As a result of repeated performances of the full factorial experiment the mathematical models for other types of traction substations power equipment have been obtained. Originality. An improved theoretical approach to the construction of generalized diagnostic indicators mathematical models for main types of traction substations electric equipment with using the methods of experiments planning theory has been suggested. Practical value. The obtained polynomial mathematical models of the generalized diagnostic indicator D can be used for constructing the automated system of monitoring and forecasting of the traction substations equipment technical condition, which allows improving the performance of processing the diagnostic information and ensuring the accuracy of the diagnosis. Analysing and forecasting the electrical equipment technical condition with the using of mathematical models of generalized diagnostic indicator changes process allows constructing the optimal strategy of maintenance and repair based on the actual technical condition of the electrical equipment. This will reduce material and financial costs of maintenance and repair work as well as the equipment downtime caused by planned inspections and repair improving reliability and uptime of electrical equipment.
Development of a Method of Calculating the Temperature of a Survey Assembly When Preparing a Train Dispatch
(Львовский политехнический национальный университет, Львів, 2020) Ustymenko, Dmytro V.; Kuznetsov, Vitaliy; Marenych, Oksana L.; Kovzel, Maksim; Mukha, Andrii M.; Sinkevych, Oleksiy; Tryputen, Mykola; Al Said Ahmad, Mohammad Ahmad Diab
ENG: The features of the thermal state of the current collection unit «contact wire – contact insert of the current collector» in the conditions of preparation of electric rolling stock for the journey are considered. As part of the study, a methodology has been developed for estimating the heating temperature of the power sliding contact zone in the conditions of train preparation for journey. Application of the method will help to reduce the number of «burnouts» of the contact wire due to the exact selection of the heating/cooling time of the train for a certain heating/conditioning current when preparing the electric rolling stock for the journey. It was established that the cause of the «burns» of the contact wire in the parking lots when preparing the train dispatch is the excess of the permissible temperature of the power sliding contact as a result of the prolonged action of the heating/conditioning current. The standard approach for determining the duration of heating is based on the average values of the loads on the system and therefore does not take into account some factors, for example, the state of the contact wire, the state of the contact insert of the current collector, the number of cars in the train, and so on. The proposed technique is based on the classical theory of electrical contact and the theory of heating a homogeneous body, which makes it possible to accurately assess the thermal state of the power sliding contact and convenient enough for use in operating conditions. The results of the work are of practical value, since the technology of preparing a train for dispatch can be supplemented by calculating the contact temperature «contact wire element – contact insert element» in accordance with the proposed methodology. This will allow for a specific train in specific conditions to apply a set of measures to prevent «burnout» of the contact wire in the event of a possible temperature exceeding the permissible value.
Development of a Spectral Theory for Analysis of Non-Stationary Pulse Stochastic Electromagnetic Processes in Devices of Electric Transport Systems
(National Technical University of Ukraine "Igor Sikorsky Kiev Polytechnic Institute", Kiev, 2019) Szeląg, Adam; Kostin, Mykola O.; Nikitenko, Anatolii; Mishchenko, Tetiana; Jefimowski, Włodzimierz
ENG: A spectral analysis of traction voltages and currents is a basis for estimation of electromagnetic compatibility level and quality of consumed power in electric transport systems. However, such an analysis is usually performed for steady-state modes and only under the condition that the time realization of voltages and currents, being deterministic for continuous quantities, have infinite length. De facto, the electric transport devices operate in non-stationary dynamic modes (starting up, coasting, acceleration, iregenerative braking, stopping, wheel spin, voltage surges, etc.). As a result, the voltage across the traction motors and the current flowing through them are noncontinuous pulsed stochastic processes. It is necessary to add that in emergency modes the voltage and current are short-term single pulses.The paper presents the spectral analysis of such random sequences of pulses as well as their fronts and decays, the concepts of actual and instantaneousspectra. The analytical expressions for amplitudes and the initial phases of k-th harmonics are obtained using the discrete Fourier transformation. The numerical calculations of the spectral composition of stochastic pulse processes of voltage and current were performed for the DE1 and VL8 electric locomotives (Ukraine) as well as for trams operating on the i routes of the city of Dnipro. The actual and instantaneous spectra, as well as the spectra of the full correlation functions and their “tails”, were determined for the electric traction voltages and currents.
Development of an Approach to Ensure Stability of the Traction Direct Current System
(PC "Technology Center", Ukrainian State University of Railway Transport, Kharkov, 2018) Sychenko, Viktor G.; Kuznetsov, Valeriy; Kosariev, Yevhen M.; Hubskyi, Petro V.; Belozyorov, Vasiliy Ye.; Zaytsev, Vadym G.; Pulin, Mykola M.
EN: The result of applying the quantitative approach to the calculation of static stability of the traction power system helped us establish that when a train runs along an actual section there emerge zones with lack of stability in terms of voltage. Exact solution to the task of evaluating the stability is extremely difficult because of the need to compute the nonlinear dependences determining the modes of operation of the traction power system and electric rolling stock. In this work, we constructed a system of four autonomous nonlinear differential equations based on experimental data that simulate the behavior of current and voltage in the contact network. We also calculated stability regions for voltage regulators in the traction network, which stabilize voltage at pantographs of electric rolling stock. The obtained stability regions of voltage regulators made it possible to estimate resource of stability and to find the most robust regulators out of those constructed. The study revealed that the non-linear regulator has better robust properties than the linear one. In this case, stability of the linear regulator is very narrow ‒ Δk=0.000004, which is an order of magnitude lower than for the non-linear regulator. When applying the non-linear regulator, voltage in the contact network stabilizes 3 times faster regardless of the place of its location. Application of the devised approach would make it possible to calculate the stability regions for various schematics of the traction network in the implementation of high-speed motion and to narrow the range of voltage fluctuations. The developed dynamic model of power consumption processes, as well as the voltage regulator, could be used when constructing an intelligent, adaptive traction power system for high-speed motion.
Development of Methods for Optimizing Reactive Power Modes Based on Neural Network Technologies
(National Technical University of Ukraine "Igor Sikorsky Kiev Polytechnic Institute", Kiev, 2019) Sayenko, Yuriy; Sychenko, Viktor; Liubartsev, Vadym
EN: The high cost of electric power, as well as the considerable length and branching of electrical networks, necessitate reduce electric power consumption, and losses in electrical networks. One of solutions of this problem is optimizing the reactive power mode. Reducing the reactive power factor at the point of common coupling (PCC) to the economic level established by the power system is not taking into account that in a complex network, power flows with a non-optimal arrangement of compensating devices and improper determination of their power can reach large values, that resulting in an increase in losses in the network. A program has been developed that implements prediction algorithms using neural networks, as well as optimizing the reactive power mode.
Dispersive-Frequency Companding of Low-Frequency Finite Signals for Objects Remote Control
(Национальный технический университет Украины "Киевский политехнический институт", Украина, 2014) Tunik, Vladimir F.
EN: There are noted specificities of known methods of frequency companding of radio signal by high frequency (HF) dispersive delay lines (DDL). It is proposed a principle of dispersive-frequency companding of low-frequency (LF) finite signals for remote control of physical objects and its realization system. It is shown that LF DDL of definite order can be both frequency compressor and frequency expander. The system of this principle realization at transmitting side contains LF DDL - frequency compressor and low-pass filter, and at transmitting side it contains LFDDLof the same order - frequency expander. © Allerton Press, Inc., 2014.
The Effect of Ozone on Wet Atmospheric Corrosion of Aluminium of High-Voltage Lines
(Dnipro National University of Railway Transport named after Academician V. Lazaryan, 2019) Tatarchenko, Galina; Beloshitskaya, Nataliia; Sychenko, Viktor H.; Liashuk, Vitalii M.
EN: Annotation. One of the factors influencing traffic safety is the uninterrupted power supply of interlocking devices. As a rule transmission of electric energy is carried out using aluminum wires. In order to assess the reliability of power lines in the work, research was carried out on the influence of ozone on corrosion of aluminum in a humid atmosphere and acidic medium. It was found that the presence of oxygen dissolved in acetic acid leads to anode currents increase, while at crossover ozone, cathode currents increase by an order of magnitude and 2-3 times the anode decreases; the corrosion potential of an Ecor shifts to the positive side at 0.15V. The decrease in the density of anode currents in the presence of ozone proceeds due to the growth of the thickness of the aluminum oxide film. According to the Augerspectra, the film is increased by 3-4 times compared with the nonzonized medium, due to which the corrosion resistance of aluminum Кm increases from 0.066 to 0.025 g/(m2∙h). The rate of formation of oxides depends on the concentration of oxidants in the solution, and on their oxidative activity. According to calculations of thermodynamic factors that determine the preferred route of oxidation, the probability of formation of oxides in the presence of ozone is significantly higher. Local destruction of the protective layer occurs mainly in defective places and places of local increase in pH of the electrode layer. Investigation of the cyclic polarization of a sample of aluminum, pre-cathode activated by a current of 1 mA/cm2 density, showed the presence of hysteresis, which decreases in the next 2-3 cycles. In this case, the exterior of the aluminum shifts to (0.10 ÷ 0.15) V is more positive and the corrosion rate is reduced, which indicates the formation of an oxide film in which irreversible changes occur. The change in the inclination of the polarization curves indicates that the cathodic reaction is delayed and is associated with the change in the structure of the surface layer of the electrode and the diffusion restrictions of ozone recovery.
Efficiency of Energy Storage Control in the Electric Transport Systems
(Politechnika Warszawska; Instytut Transportu, Poland, 2022) Sablin, Oleg I.; Bosyi, Dmytro O.; Kuznetsov, Valeriy; Lewczuk, K.; Kebal, Ivan; Myamlin, Sergiy S.
ENG: The problems of storage and supplying the energy, together with reducing energy intensity for transport, are now crucial for developing sustainable and reliable transport systems. The energy network must be gradually adapted to new loads and power consumption patterns, especially in railways. The article aims to develop the simulation model to investigate the energy storage systems in its use in the electric transport infrastructure. The authors review selected technical solutions for electric energy storage in transport. The theoretical aspects of energy exchange in the energy storage systems were presented as a base for a continuous simulation model of electric transport power supply. In the non-periodic random voltage input applied to the storage unit, it is proposed to use the calculation method based on the Duamel integral to analyze its charge-discharge processes. The resistance functions were applied to analyze the traction power supply mode with variable in time and space by active loads. The simulation showed that the direct connection of the unit to the traction network significantly reduces the traction energy consumption.
The Efficiency of Using Artificial Feedforward Neural Networks with a Single Hidden Layer of Eight Neurons for the Analysis of Overload Conditions of Selected Tramway Traction Substations
(Uniwersytet Jagielloński, Kraków, 2018) Dudzik, Marek; Prusak, Janusz; Drapik, Sławomir; Kuznetsov, Valeriy
EN: This paper presents further results of research on the load variability of rectifier units for the selected tram traction substation. Actual measurements were used in the performed analysis. This time, the analysis was focused on the characteristics of maximum loads and overloads for time periods of five minutes and sixty minutes, for a number of selected cases. The second part of the article discusses the effectiveness of the use of artificial neural networks of the feedforward type with one hidden layer with eight neurons to analyse the overloads of the traction substation over a longer time scale. The obtained positive results indicate that this type of research should be continued, using different variants of artificial neural networks.
Electrodeposition of Nanocrystalline Chromium–Carbon Alloys from Electrolyte Based on Trivalent Chromium Sulfate Using Pulsed Current
(Springer, 2012) Protsenko, Vyacheslav S.; Danilov, Fedor I.; Gordiienko, Victor O.; Baskevich, Alexander S.; Artemchuk, Viktor V.
EN: The effect of pulse parameters on the electrolysis current output, nanocrystals size, composition, hardness, friction coefficient and wear resistance of nanocrystalline coatings Cr-C, obtained from the sulfuric acid-based electrolyte salts Cr (III), comprising urea and formic acid. It is shown that coatings containing ~ 9% (wt.) carbon; current density and duty cycle do not affect the composition blocked. It was found that depending on the current output from the duty cycle when there is a maximum duty cycle ~ 1.05 ... 1.1, where the output current significantly exceeds the value realized in current-mode steady-state. It is shown that if the micro-hardness Cr-C deposits obtained at DC, is close to 850-900 HV, then using a pulsed electrolysis in certain modes may increase the microhardness up to ~ 1200-1300 HV. Found that the use of pulsed electrolysis can significantly reduce the coefficient of friction chrome-carbon cover (with steel counterbody) in conditions of dry friction and under boundary lubrication, and also increases the durability of precipitation.
Electrodynamics of Electric Power Transmission and Losses in Devices of Electric Transport Systems
(2018) Kostin, Mykola O.
ENG: For the first time, the "field" approach for explaining the processes of transmission and generation of electric power losses in devices of electric transport systems is described and theoretically substantiated on the basis of the theory of electromagnetic field. The results of the solution of the system of electromagnetic field equations show that it is energetically appropriate to design low-floor types of electric rolling stock. A qualitative view of electric power flows arriving through the air of the feeder zone from the traction substation and entering to the electric rolling stock through the roof and the front part of its body is presented. It is established that the main flow of energy enters through the roof porcelain insulator. At the same time, the electromagnetic waves partly penetrate into the metal surfaces of roof and frontal part of the body, and partially they are reflected from them creating losses of active power. The results of calculations of these losses, power factor and reactive power factor of the electric locomotive roof are shown. The relation between the standing waves, formed in the feeder zone, and the reactive power consumed by the electric rolling stock is established.
Electrodynamics of Power Losses in the Devices of Inter-Substation Zones of AC Electric Traction Systems
(MDPI, Basel, Switzerland, 2022) Nikitenko, Anatolii V.; Kostin, Mykola O.; Mishchenko, Tatyana M.; Hoholyuk, Oksana
ENG: This article presents a new method for the estimation of active power losses based on a “field” approach, i.e., on the theory of the electromagnetic field and the theory of propagation of electromagnetic waves in a dielectric medium. Electromagnetic waves are assumed to transmit energy from the traction substation to electric rolling stock through the airspace of the inter-substation zone (i.e., not through the wires of the traction network) and meet electrically conductive surfaces on their way. The waves are partially reflected from the surfaces and partially penetrate them, thus creating thermal losses, the determination of which is the main task of this article. The analytical expressions for specific losses of active power are obtained by solving the system of Maxwell’s equations. Calculations of specific power losses in the catenary, rails, roofs, and bottoms of carriages and electric locomotives are performed. Power losses in carriages and electric locomotives are found to be at least 7%. A comparative assessment of the magnitude of total power losses of different types obtained by the “field” and “circuit” approaches is provided, which has established that “conditional” losses correspond to losses in rails, train carriages, and electric locomotives.
Electrodynamics of Reactive Power in the Space of Inter-Substation Zones of AC Electrified Railway Line
(MDPI, 2021) Kostin, Mykola O.; Nikitenko, Anatolii V.; Mishchenko, Tatyana M.; Shumikhina, Lyudmila
ENG: In railway traction, the deﬁnition of “electromagnetic ﬁeld” is functionally connected to the concept of the reactive power consumed by the electric rolling stock, and characterized by the running and standing electromagnetic waves in the space of the inter-substation zones from the site of the AC traction system. Such a deﬁnition is established and theoretically justiﬁed by the theory of electromagnetic ﬁelds. This article uses the methodology of this theory, in particular, a method for power balance estimation in electromagnetic ﬁelds based on Maxwell’s equations, as well as methods for the analysis of running and standing electromagnetic waves based on the theory of reﬂection, propagation and transmission of plane harmonic waves. The research considers the regularities of standing electromagnetic waves in the space of inter-substation zones of electric traction systems, which occur due to the incomplete reﬂection of incident waves from the contact wire and metal parts of the roof surface and the frontal part of the body of the electric rolling stock. The ﬂow of electricity to the roof surface and the frontal part of the body of an electric locomotive is considered. The possibility of using existing methods to reduce wave reﬂections and thereby to effectively compensate for reactive power in the space of inter-substation zones is discussed.
Electroplating of Wear-Resistant Nanocrystalline Coatings from a Bath Containing Basic Chromium(III) Sulfate (chrome tanning agent)
(Pleiades Publishing, Ltd., 2013) Danilov, Felix I.; Protsenko, Vyacheslav S.; Gordiienko, Viktor O.; Baskevich, Aleksandr S.; Artemchuk, Viktor V.
ENG: Regularities of the electroplating of chromium–carbon alloy coatings from a bath containing basic chromium(III) sulfate, carbamide, formic acid, sodium sulfate, aluminum sulfate, orthoboric acid, and sodium dodecyl sulfate are studied. Replacement of chromium sulfate as a source of trivalent chromium ions in the solution with basic chromium sulfate (chrome tanning agent) results in a decrease in the current density when metal deposition begins. As a result, the covering power of the bath increases. The effects discovered are determined by changes in the composition of the discharged chromium complexes. A certain excess of OH– groups in the inner sphere of electroactive chromium complexes results in acceleration of electroplat ing. The studied electrolyte based on chrome tanning agent enables one to produce thick high quality nanoc rystalline Cr–C alloy coatings with improved tribological characteristics.
Embedded AI for Audio-Based Drone Detection in Critical Railway Infrastructure
(Silesian University of Technology, Poland, 2025) Bosyi, Dmytro O.; Sablin, Oleh I.; Potapchuk, Iryna Yu.; Usenko, Andrii Yu.
ENG: Summary. With the increasing threat of unmanned aerial vehicles to critical railway infrastructure, the need for advanced detection technologies has become more urgent. This paper reviews existing railway monitoring solutions and outlines their limitations in identifying aerial threats. An acoustic analysis is conducted to extract distinctive unmanned aerial vehicle sound patterns using Mel-frequency cepstral coefficients, which serve as primary features for classification. Neural network models are applied to detect and differentiate aerial threats from environmental noise, achieving high recognition accuracy. The study also describes the development of an embedded artificial intelligence system based on STM32 microcontrollers, which combines real-time digital signal processing with efficient on-device neural inference. This solution offers a scalable and energy-efficient platform for decentralized audio-based drone detection in railway security applications.