66kV空母线铁磁谐振造成“虚幻接地”现象的分析  

Analysis of "virtual grounding" of 66 kV bus bar caused by ferroresonance

作　　者：徐炜彬 

机构地区：[1]长春供电公司,吉林长春130021

出　　处：《黑龙江电力》2011年第5期361-363,367,共4页Heilongjiang Electric Power

摘　　要：阐述了铁磁谐振引起"虚幻接地"现象的原因,从谐振特点、单相接地特点分析了空母线铁磁谐振与"虚幻接地"的机理,辨识了铁磁谐振与单相接地的异同,指出了系统发生铁磁谐振的危害,提出了系统铁磁谐振的预防和处理办法,并通过空充母线出现的"虚幻接地"实例验证了所提办法的正确性。This paper demonstrates the reason for ＂virtual grounding＂ caused by ferroresonance,analyzes the mechanism of bus bar ferroresonance and ＂virtual grounding＂ from the characteristics of resonance and single-phase grounding,of which the similarities and differences are distinguished as well,points out the disadvantage of ferroresonance and proposes the prevention and measurement of ferroresonance which are proved effective examples.

关 键 词：空母线 铁磁谐振 虚幻接地 中性点位移电压 

分 类 号：TM864[电气工程—高电压与绝缘技术]