Traction substations DC POWER SUPPLY SYSTEMS HIGH VOLTAGE (12-24 kV)

摘要

Traction substation intended for transformation and distribution of electric power in electric power systems DC rail road and, particularly, promising in power systems railways DC high voltage (12-24 kV).; Pulling station consists of controllable semiconductor rectifiers, executed by truncated 12-pulse scheme i.e. without cathodic second group of valves of the rectifier bridge, the thyristor three-pole circuit breakers and backup feeder breaker main "plus" - and the main "minus" voltage-bus rectified, diode based devices, a smoothing apparatus and bypass feeder disconnector switch and the spare. At the same time as the main "plus" split-bus uses a three-phase busbar system, connected through a three-pole disconnect switch to phase busbars second bridge rectifier, to which are connected through a three-pole circuit breakers, thyristor, three-pole switches feeders contact network, as well as a spare switch operate simultaneously cathodic function second group of valves controlled bridge rectifiers. The cathodes of the thyristor valves each three-pole circuit breaker and feeder spare switch electrically interconnected and form, respectively, the positive terminal of DC feeders and spare switch.; The technical result of the use of the claimed utility model is a significant increase in resource switches DC feeders while reducing their weight and size, reduced weight and size of high-voltage rectifier traction substations, as well as the possibility of modulating the magnitude of the rectified voltage of traction substation.