换流站35kV站用电磁式PT故障对策  

Analysis and countermeasures of electromagnetic PT fault in 35 kV converter station

作　　者：江源 

机构地区：[1]湖北超高压输变电公司,湖北武汉430050

出　　处：《宁夏电力》2012年第4期25-28,共4页Ningxia Electric Power

摘　　要：针对某换流站35 kV站用电磁式电压互感器(Potential Transformer,PT)故障进行探讨,分析了事故产生的原因和影响因素,提出了应对措施。分析结果表明:故障是由于电磁式PT内部发生铁磁谐振引起的。将电磁式PT更换为电容式PT或者增加专用的消谐装置,可有效避免此类故障的发生。Aiming at electromagnetic potential transformer（PT） faults in 35 kV converter station,make discussion,analyzes the causation and influence factor,puts forward reply measures.The analy sis result shows that the fault is caused by the inside of electromagnetic PT occurring ferro-resonance.Replacing electromagnetic PT by capacitance PT or increasing special anti-resonance device,can availablyavoidthisfaulttotakeplace.

关 键 词：电磁式PT 换流站 铁磁谐振 

分 类 号：TM864[电气工程—高电压与绝缘技术]