防止电压互感器的铁磁谐振过电压的有效措施

The Effective Measures to Prevent from Ferro-Resonant Overvoltage of Voltage Transformer

对比分析了广州市从化电力局在 10 k V系统中使用 L XQ— 10型消谐器的情况 ,说明消谐器具有阻尼电压互感器的铁磁谐振过电压 ,限制 10 k V系统单相接地消失时电压互感器一次绕组回路中涌流的作用。消谐器可以有效地防止电压互感器过电压引起 PT高压熔断器熔断的现象 。

The use of LXQ-10 resonance eliminator in 10 kV system in Conghua Electric Power Bureau is introduced. It is shown that resonance eliminator can damp the ferro-resonance overvoltage and limit the surge current. It is helpful to the reliable operation of system.