Browsing by Author "Ivanov, Alexander P."
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Item Energy-Efficient and Cost-Effective Methods of Driving Trains under the Conditions of Development of the Electricity Market(Dnipro National University of Railway Transport named after Academician V. Lazaryan, 2019) Pshynko, Alexander N.; Afanasov, Andriy M.; Kuznetsov, Valeriy; Skalozub, Vladyslav V.; Arpul, Serhii V.; Ivanov, Alexander P.ENG: Abstract. The article for the first time considers the possibilities for the organization of cost-effective rail transportation on electrified section in terms of the functioning of the Ukrainian balancing electricity market. It is formulated the complex task of choosing effective mechanisms of purchase and sale on the electricity market on the basis of contracts for the implementation of markets "for the day ahead", as well as for the appointment of parameters and tariffs of the intraday market. The authors presented the models and results of calculations of optimum modes of trains’ driving, which are calculated for various criteria of efficiency taking into account the cost of the consumed active and reactive electric energy. The technique of tariff formation for purchase of electricity on the balancing market was proposed.Item Rational Distribution of Excess Regenerative Energy in Electric Transport Systems on the Basis of Fuzzy Logic Application(Warsaw University of Technology, Poland, 2017) Sablin, Oleg I.; Kuznetsov, Valeriy; Shynkarenko, Viktor I.; Ivanov, Alexander P.ENG: To develop the fuzzy model of distribution of excess regenerative energy in traction and external power supply systems allowing to exercise effective operation of the power equipment. For effective distribution of excess regenerative energy in systems of electric transport, as well as for systems equipped with stationary stores of energy and inverting traction substations with regulators of output voltage it is necessary to solve a number of the problems with high degree of uncertainty demanding taking into account a set of random factors such as the modes of power lines and traction loadings. These factors have to be considered in operation for choosing the rational modes of energy stores, inverters and regulators of voltage on buses of substations to provide the rational conditions for energy regeneration on electric transport. The control system of energy storage devices, inverters and traction substation output voltage regulators, designed on the basis of fuzzy logic, can provide the necessary conditions for the regeneration on electric transport on sections with a shortage of traction power consumption and allows to optimize the distribution of excess braking energy of transport vehicles. It is achieved by determining the rational relationship between the components of the excess current of regeneration in real time, which can ensure a minimum of power losses of regenerative energy in traction and external power supply systems. The use of the developed approach is effective under the conditions of incomplete information received by measurement systems and on the basis of additional studies it can allow to minimize rated capacity of stores, inverters and traction substation output voltage regulators that could reduce the costs of modernization of existing sections and electrification of new electric transport systems.