Abstract
Purpose. 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. Relevance. 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. Scientific novelty. 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. Practical importance. 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.
Highlights
The perspective pillar of development of nonautonomous electric transport systems is transition to the distributed traction power supply, introduction of the energy store device (SD) and intellectual train dispatching systems allowing to solve successfully power and environmental problems on transport
It is mainly related with a time spread of processes of energy consumption and energy generation by the vehicles which are on a section in the traction and regenerative modes that is especially noticeable in the case of small traffic
For realization of effective distribution of regeneration energy in systems of electric transport it is necessary to solve a number of the problems with high degree of uncertainty demanding the accounting of a set of random factors such as the modes of power lines and traction loadings
Summary
The perspective pillar of development of nonautonomous electric transport systems is transition to the distributed traction power supply, introduction of the energy store device (SD) and intellectual train dispatching systems allowing to solve successfully power and environmental problems on transport. For realization of effective distribution of regeneration energy in systems of electric transport (as well as in the perspective power supply system equipped with energy store devices, reversible TS with smooth regulation of output voltage) it is necessary to solve a number of the problems with high degree of uncertainty demanding the accounting of a set of random factors such as the modes of power lines and traction loadings. These factors have to be considered in dispatching of energy store devices modes , inverters and voltage regulators on TS buses allowing to provide rational conditions of energy regeneration. It’s necessary to regulate the modes of the power equipment for optimization of current distribution under the criterion [2]
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