【摘要】 针对40.5 kV真空断路器开断并联电抗器的工况,为了消除现有仿真模型的不足,笔者简单综述了真空断路器开断感性小电流的仿真研究的现状,对一种型号的40.5 kV真空断路器进行了试验,得到其触头间介质动态绝缘强度曲线、高频电流熄灭判据和截流数据,并建立了断路器开断并联电抗器的三相仿真模型,同时考虑了三相间的耦合。应用ATP-EMTP软件进行了该型号真空断路器开断并联电抗器的三相仿真研究,并与现场试验结果进行了比对,仿真结果与试验结果大致相符。更多还原

【Abstract】 Aiming at the operating conditions of 40.5 kV vacuum circuit breaker switching off shunt reactors,and in order to eliminate deficiencies in the existing simulation model,a general review of simulating researches on vacuum circuit breakers switching off small reactive current is given.A three-phase model of 40.5 kV circuit breakers switching off shunt reactors is set up based on the experimental results of a type of 4.5 kV vacuum circuit breaker,including the dielectric strength characteristics,high-frequency current quenching criteria and chopping current.And the interphase coupling is considered in the model.A three-phase simulation is conducted for the transient process of the vacuum circuit breaker switching off shunt reactors via ATP-EMTP,and the simulation results coincide almost with experimental results.更多还原