保定电气厂

一次消谐器用途

Primary harmonic eliminator

6～35kV中性点不接地电网中的电磁式电压互感器(以下简称PT)，当母线空载或出现较少时，因因合闸充电或在运行时接地故障消除等原因的激发，会使电压互感器过饱和，则可能产生铁磁谐振过电压。出现相对地电压不稳定，接地指示误动作，PT高压保险丝熔断等异常现象，严重时会导致PT烧毁，继而引发其它事故。这种情况就需要安装消谐器。

6 ~ 35kV neutral electromagnetic potential transformer in power system (hereinafter referred to as PT), when the bus is empty or less, because stimulate closing at run time charging or ground fault elimination and other reasons, the voltage transformer saturation, it may produce ferromagnetic resonance overvoltage. The relative voltage instability, grounding indication malfunction, PT high voltage fuse and other abnormal phenomena will cause PT to burn up and cause other accidents. In this case, it is necessary to install the harmonic eliminator.