摘要
通过对一般消谐方法的介绍与存在问题的分析,提出用测量接地电容器组相电流和零序电流获取系统三相对地电压和零序电压信号以取代PT肩负的绝缘监视功能,解除PT中性点接地,从根本上消除了PT的铁磁谐振;还介绍了该方法在某一个变电所的实施结果,证明其消谐振效果较理想。
In this paper, the general methods of eliminating ferromagnetic resonance are introduced, and its problems are analyzed. To get the three-phase voltages and zero sequence voltage, by means of measuring the phase currents and zero sequence current across an earthing capacitor bank is proposed. This bank can replace the voltage transformer＇s function of monitoring the insulation status. With this method, the neutral point of PT is removed, and the ferromagnetic resonance of PT is eliminated radically. The application results of a substation, in Henan Oil field, are also introduced, and the results are verified effective.
出处
《高压电器》
EI
CAS
CSCD
北大核心
2006年第4期317-318,共2页
High Voltage Apparatus
关键词
电压互感器
铁磁谐振
消除方法
voltage transformer
ferromagnetic resonance
the method of elimination
