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高压直流换流站在进行滤波器组投切时往往会对小组中电阻器产生较大的冲击电流,并造成滤波器电阻过负荷异常动作。比较了不同型号的滤波器投切时在电阻上产生的冲击电流,分析产生该电流的原因,推导该电流随时间衰减关系。然后,对滤波器电阻过负荷异常动作提出改进意见。
HVDC converter station switching filter group often will have a large group of resistors in the impact of current, and cause the filter resistance overload abnormal movements. The impulse current generated on the resistor during the switching of different types of filters is compared. The reason for the generation of the current is analyzed, and the decay relation of the current with time is deduced. Then, the filter resistance overload abnormal action proposed improvements.