摘要
基于TEM P-500IU型电容式电压互感器(CVT)的特殊结构,介绍了该型CVT电容及介损值现场测量方法及注意事项。对于电容单元C11、C12,可以采用常规正反接线法进行电容、介损值测量;对于电容单元C13、C2,可通过操作中间变压器高压端外部的操作把手合上中间变压器一次绕组首端接地刀闸,实现采用反接法测试它们的电容及介损值,克服了采用自激法测试存在的弊端。同时文章也阐述了该型CVT特殊接线方式的中间变压器一次绕组对二次绕组及地的电容、介损值的测量接线方法及注意事项。
This paper introduces the field measurement of capacity and dielectric loss for TEMP-500IU CVT （capacitor voltage transformer）,and some safety considerations. These are based on the particular structure of TEMP-500IU CVT. By operating on the handle on the high voltage end of the middle transformer,we can connect the middle transformer＇s first coil to the ground. By doing this, we could conveniently test the capacity and dielectric loss value of C13 and C2 with the ＂Up-Side Down＇connecting method. This method can overcome many short comes of the self-stimulating method.
出处
《华北电力技术》
CAS
2008年第11期11-13,21,共4页
North China Electric Power
关键词
电容式电压互感器
介损测量
电容测量
capacitor voltage transformer （CVT）
dielectric loss measurement
capacity measurement
