断路器开断换流站交流滤波器小组负载的暂态电压分布仿真与分析

Simulation and Analysis of the Transient Voltage Distribution of the Circuit-Breaker Switching ACF Capacitive Load in Converter Station

瓷柱式双断口断路器的断口并联参数发生变化时,其中一个断口将承受过重的恢复电压,从而使断路器发生复燃或重击穿。通过建立单相双断口断路器切除滤波器组仿真模型,针对两个断口并联电阻取值相等和不相等两种情况,仿真与计算断口间的暂态过程,分析并联电阻对暂态恢复电压的影响,并给出了计算与评估断路器两个断口上恢复电压的案例。

When the parameters of the parallel connection of the live tank double-break circuit breaker is changed,one of the interrupters suffer a severer recovery voltage,and this can lead re-ignition or re-strike on the circuit-breaker.A simulation model of single phase circuit-breaker with double interrupters switching the filter group is established to simulate and calculate the transient process of the interrupters.The influence of parallel resistance to transient recovery voltage is analyzed in both cases of the parallel resistance of two interrupters with equal and unequal value.Finally,an example of calculation and evaluation on the recovery voltage of two interrupters under the specific parameters is given.