有源电子式互感器实现准无源化的改进  

Improvement of Electronic Transformers Based on Quasi Power-free Mode

作　　者：刘忠战 王伟 郑林 李源 余伟 张超雷 

机构地区：[1]西安华伟光电技术有限公司,西安710019 [2]绵阳市电业局,绵阳621000

出　　处：《高压电器》2011年第10期93-96,共4页High Voltage Apparatus

基　　金：科技部科技型中小企业技术创新基金项目(06C26216100557)~~

摘　　要："自励源"是一种日臻完善的电子式互感器高压侧自供电技术,它可以实现有源电子式互感器的"准无源化",早期投运且依靠激光送能方式在线运行的电子式互感器,普遍存在寿命周期短、运行不稳定等弊端。笔者介绍了将激光送能改进为全自励源运行的原理和方法,记述了对于110 kV整站技术改进的全过程。经过改进的电子式电流互感器简化了系统结构,免去对送能装置的定期维护要求,提高了运行的稳定性,预期寿命周期将会增长,是一种值得推广的电子式互感器电源技术方案。Self-excitation power supply is a perfect self-powered technology for high-voltage side of electronic transformers.It can translate the active electronic transformer into quasi power-free mode.Conventional electronic transformers powered laser have such shortcomings as short life-cycle and unstable operation.This paper discusses the principle and method of changing the laser-powered mode to the self-excitation power supply,and describes the whole improvement of a 110 kV substation.After the improvement of the electronic current transformer,its system structure is simplified;the periodic maintenance of the power supply equipment is dispensed with;the working stability is enhanced;and hence the expected life cycle will be increased.

关 键 词：电子式电流互感器 自励源 自供电技术 

分 类 号：TM452.93[电气工程—电器]