500kV电容式电压互感器电压异常分析及处理  

Analysis and Treatment of Voltage Abnormality in 500 kV Capacitor Voltage Transformer

作　　者：卢峰超[1] 刘雪飞[1] 白剑忠[1] 王伟[1] 

机构地区：[1]河北省电力公司超高压输变电分公司,石家庄050070

出　　处：《河北电力技术》2012年第1期28-29,45,共3页Hebei Electric Power

摘　　要：介绍电容式电压互感器的工作原理、结构及故障情况,结合CVT介损电容量测试数据、一次电压监测数据、角差比差试验数据,分析某变电站500kV电容式电压互感器电压异常的原因,并提出处理措施和建议。This paper introduces the working principle,structure and fault of the capacitor voltage transformer（CVT）.According to the CVT capacitance,dielectric loss data,a voltage monitoring data,ratio errors and angular differences of a voltage transformer,analyzes the abnormal voltage fault causes of one 500 kV CVT in some substation,proposes some treatment measures and suggestions.

关 键 词：电容式电压互感器 电压异常 电容单元 击穿 

分 类 号：TM451.2[电气工程—电器]