摘要
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。
A great inrush current in the AC filter resistor caused by the sub-bank breaker closing and opening in HVDC converter stations could produce abnormal trip of the AC filter protection.This article contrasts the inrush currents in different kinds of AC filter resistor when the breaker closing and opening,analyzes the cause of the inrush current,and deduces the current decay with time.Then suggestions are given to improve the overload protection abnormal trip of AC filter Resistor.
出处
《南方电网技术》
2011年第1期53-56,共4页
Southern Power System Technology
