电压互感器现场校验新方法的研究  

Research on Locale Calibration New Method of Voltage PT

作　　者：毛安澜[1] 王晓琪[1] 王玲[1] 冯宇[1] 陈晓明[1] 

机构地区：[1]国网电力科学研究院,武汉430074

出　　处：《电测与仪表》2011年第6期27-31,共5页Electrical Measurement & Instrumentation

摘　　要：为解决特高压试验过程中电压互感器检测试验中设备数量多、体积庞大难以运输、试验条件复杂等问题,本文通过对电压互感器高低压侧等值电路分析,提出了采用阻容分压结构并利用软件进行数据处理一种新的校验方法。它不依赖标准电压互感器,以电压互感器误差试验中的比较法为基础,利用可调电阻与电容的参数建立的数学模型,计算出现场试验中存在的杂散电容和被检设备误差测量值。结果表明仿真误差准确度满足现场试验要求。In order to slove the problem of mass facilities,in conformity to transport and complex conditions in UHV locale calibration test,according to the equivalent circuits of PT,a new method of calibration using the structure of resistance-capacitance divider and data processing by software is presented in the paper.Not relying on standard PT,and based on the comparison method in PT error calibration and mathematical model established by parameters of adjustable resistor and capacitance,the method calculates stray capacity locale calibration and error value of PT.It is indicates that the error accuracy meets the requirements of test.

关 键 词：电压互感器 特高压工程 阻容分压 现场校验 

分 类 号：TM451[电气工程—电器]