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单相接地补偿及选线的微机控制系统
引用本文:王涛,王建南.单相接地补偿及选线的微机控制系统[J].控制工程,2002,9(5):79-81.
作者姓名:王涛  王建南
作者单位:北华大学电气工程系,吉林吉林,132021
摘    要:针对中性点经消弧线圈接地的小电流接地系统,设计了一套单相接地补偿及选线的微机保护装置,本装置采用三相五柱式消弧线圈,由PWM脉宽电路供电,可实现在线实时调节补偿电流,并有效减小谐波电流;接地选线装置采用零离电流有功分量及有功功率作为判所。计算简明可靠。该装置通过多次试验,动作迅速灵敏,选线准确,有很好的应用价值。

关 键 词:单相接地  补偿  选线  微机控制系统  小电流接地系统  消弧线圈
文章编号:1671-7848(2002)05-0079-03
修稿时间:2002年3月22日

Microcomputer Control System for Compensating Single-phase Earthing Current and Selecting Line
WANG Tao,WANG Jian-nan.Microcomputer Control System for Compensating Single-phase Earthing Current and Selecting Line[J].Control Engineering of China,2002,9(5):79-81.
Authors:WANG Tao  WANG Jian-nan
Abstract:Aim at a n-arc suppression reactor earthing power system, a suit of microcomputer system for compensating single-phase earthing current and selecting line was designed. This suit of equipment adopts XBSG type arc suppression reactor, supplying power by PWM circuit, it can adjust compensating current time by time, and minishes harmonic wave; selecting line part adopts a kind of new criterion - the wattful power component of zero sequence current, simple and convenient for computing and be dependable. By a few times of dynamic model test, it is proved that this suit of equipment is very sensitive and credible.
Keywords:earthing power system  earthing current compensating  selecting line  microcomputer  
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