高压串联谐振故障限流器辅助电源的设计

Design of Auxiliary Power Supply for High Voltage Series Resonant Fault Current Limiter

在高压串联谐振限流器中,所有的有源传感器和各个晶闸管触发电路均需要相互隔离的低压电源单独供电,而限流器工作在稳定状态和工作在短路限流状态时,电路中各个节点的电压将发生很大的变化,使在限流器电路内部获取低压辅助电源,并实现高压隔离成为高压串联谐振限流器设计的难题。本文提出了在双分裂电抗器中取能的两种方法,配合蓄电池的应用,为高压串联谐振限流器提供了不受系统停电影响、安全可靠的辅助电源。

In the high-voltage series resonant current limiter, all the active sensors and the thyristor trigger circuits need to separate each other from the low-voltage power supply. And current limiting device in steady state and work in short circuit limit state flow, every node in the circuit voltage will occur great changes, so that in current limiting circuit internal access to low voltage auxiliary power supply, and to achieve high voltage isolation for high voltage series resonance current limiting device design problem. This paper presents in double split reactor take to two methods, with the battery application, high pressure series resonant current limiter provides is free from the influence of power system, safe and reliable auxiliary power supply.