超高压CVT误差低校高测试设备的研制  

Research on Ultrahigh Pressure CVT Test Device of Error Characteristics Simulation

作　　者：张鑫[1] 刘延泽[1] 姚胜红[2] 方璟[2] 

机构地区：[1]内蒙古电力科学研究院电能计量中心,呼和浩特010020 [2]国网电力科学研究院武汉南瑞有限责任公司,武汉430074

出　　处：《电测与仪表》2012年第12期46-49,54,共5页Electrical Measurement & Instrumentation

基　　金：内蒙古电力(集团)有限责任公司2011年科技资金资助项目(2011020204)

摘　　要：变电站现场高压互感器体积大,运行电压高,不适于拆下运到高压试验室检定,绝大多数只能采用现场检定方法。为解决互感器现场误差校验难或难以校验的问题,本文根据低压法测量高压互感器原理,采用变频技术和数字化处理方法成功研制出超高压CVT误差低校高测试设备。该设备内置功放异频源、升压装置及测量和控制电路,采用DSP技术进行人机交互和系统控制。介绍了测试装置的原理及各个部分测试原理图,解决了现场难以测量或者不能测量CVT误差的问题。Bull and high pressure operation made high voltage transformer not suitable for high pressure laboratory to dismantle the verification, most of high voltage transformers only took calibration test on the scene. For solving the problem that it is difficult to verify or even to check, this article according to the principle of Low pressure method measure high voltage transformer, taking frequency conversion technology and digital processing methods, successfully developed the error characteristics simulation equipment on ultrahigh pressure CVT. The equipment is built-in amplifier different frequency source, booster device and measurement and control circuit, and using DSP technology for human-computer interaction and control system. The paperintroduced the principle of test equipment and each part of the test principle diagram to solve the problem which is difficult to measure or to measure the error of CVT on the scene.

关 键 词：电容式电压互感器 变频技术 低校高 异频功放源 测试设备 

分 类 号：TM45[电气工程—电器]