Improving the Efficiency of Static Reactive Power Generators in Traction Power Supply Systems of Railways

This article is devoted to improving the efficiency of single-phase static reactive power generators in the traction AC power supply system of railways. The aim of the study is to increase the efficiency of the traction AC power supply system of railway transport, which contains static reactive power generators. The article presents the results of an experimental evaluation of the operation of a traction power supply system with and without a reactive power compensation device located at the contact network separation post. Statistical methods of processing the experimental results were used. The main dependences of the energy parameters of the traction power supply system and a static reactive power generator in various operating modes are shown. The characteristic disadvantages of operating a static reactive power generator when operating in a traction network are revealed, consisting in the effect of overcompensation of reactive power associated with insufficient consideration of the reactive load determined within the boundaries of the substation zone and changes in the idle voltage at neighboring traction substations. A method for regulating the power of a static reactive power generator is proposed, which makes it possible to increase the efficiency of its operation and differs from known control methods by taking into account the harmonic composition of the load current and its reactive component.