摘要
铁磁谐振是影响GIS变电站安全稳定运行的重要因素,而带铁芯电感元件励磁特性的非线性是激发铁磁谐振的根本原因。针对某500kV GIS变电站,采用数值仿真的方法对调试操作中激发铁磁谐振的工况进行研究,并对比实际调试结果。研究表明:变电站调试过程中断路器分闸切空载母线会激发铁磁谐振;对于单相电磁式电压互感器,在各相剩余绕组上短时并联阻尼电阻可以有效抑制铁磁谐振。
Ferroresonance is an important factor affecting the safe and stable operation of GIS substation, while the non - linear excitation characteristic of inductance with iron - core is the basic reason for ferroresonance excitation. In a 500kV GIS substation, a variety of working conditions under commissioning process which may excite ferroreso- nance were analyzed by numerical simulation method and it was compared with the practical commissioning results. Study shows that ferroresonance will be excited when opening of circuit breaker cuts off no - load bus under eom- missioning process. For single - phase electromagnetic voltage transformer, ferroresonance can be effectively sup- pressed by paralleling damping resistor on remaining winding of each phase temporarily.
出处
《黑龙江电力》
CAS
2017年第1期58-61,共4页
Heilongjiang Electric Power
关键词
铁磁谐振
非线性
频率
阻尼电阻
ferroresonance
non - linear
frequency
damping resistor
