微机线路保护振荡闭锁装置动作性能分析

本文简单地回顾了我院研制的采用双重判据的微机线路保护振荡闭锁装置的基本原理。并用微机对电力系统不同短路点、不同过渡电阻、不同振荡周期的情况下,该原理的振荡闭锁装置的动作性能作了分析计算。对双重判据的电阻变化率的定值的合理选择进行了研究探讨。文章最后还把该振荡闭锁装置与BBC公司的功率振荡闭锁继电器的性能进行了对比。

The Analysis of Performances of a New Power Swing Block Principle in Line Protection Based on Microcomputer

This paper analyses and calculates the performance of a new power swing block principle based on microcomputer in the case of different fault local, fault resistance and power swing cycle. The selection of setting resistance differential in this principle is also discussed. Finally the contrast of performance between this new power swing block developed by North China Institute of Electric Power and power swing blcok of BBC Company is presented.