基于电子式互感器的分布式行波测距装置  

Distributed Traveling Wave Ranging Device Based on Electronic Transformer

作　　者：王振华[1] 牟涛[1] 周东杰[1] 朱付强 赵会彬[1] 马志敏 WANG Zhenhua;MU Tao;ZHOU Dongjie;ZHU Fuqiang;ZHAO Huibin;MA Zhimin(XJ Electric Technology Center,Henan Xuchang 461000,China)

机构地区：[1]许继集团有限公司,河南许昌461000

出　　处：《电力电容器与无功补偿》2022年第4期139-144,共6页Power Capacitor & Reactive Power Compensation

基　　金：国家自然科学基金项目(51777166)。

摘　　要：本文研究了一种基于电子式互感器的分布式行波测距系统;针对传统互感器动态特性差,易饱和从而影响测距精度的问题,提出了基于罗氏线圈的电子互感器测距产品的实现方法;结合电子式互感器的发展前景及特点,采用分布式测距子机加测距主机的架构;子机负责各相突变波形的高速数据采集及故障录波,采样速率为2 M;主机负责采用应答机制与各子机通讯,合并录波数据,完成测距运算;子机与主机采用握手的数据交互模式,一旦发送失败启动重发机制,保证录波数据传输可靠性;产品经过验证,能较好地还原行波波形,实测测距误差小于300 m。A kind of distributed traveling wave ranging system based on electronic instrument transformer is studied in this paper;In view of such problem of traditional instrument transformer asweak dynamic characteristics,easy saturation and influence on ranging accuracy,an achievement method for the electronic instrument transformer ranging product based on Roche coilis proposed.Combined with the development prospect and characteristics of the electronic instrument transformer,the structure of distributed range finder and range finder host is adopted.The former is responsible for the high⁃speed data acquisition and fault recording of waveform at a sampling rate of 2 M.The latter is responsible for using the response mechanism to communicate with each sub⁃machine,merge the recorded wave data and complete the ranging operation;The data interaction mode of handshaking is adopted between the former and the latter.In case of sending failure,the resend mechanism is started again so to assure reliability of the recording data transmission.The product has been verified to be able to better restore the traveling wave,and the actually measured ranging error is less than 300 m.

关 键 词：电子式互感器 分布式 行波测距 主机 子机 握手机制 

分 类 号：TM75[电气工程—电力系统及自动化] TM45