变电站自动化系统遥信去抖方法分析

在辨别电网故障时各类事件发生的先后顺序中,SOE记录具有重要意义,可以为电网调度运行人员正确处理事故、分析和判断电网故障提供手段。如何正确识别开关抖动信号,保证SOE不误报、不漏报,是我们需要考虑和解决的问题。对目前采用的遥信去抖方法进行分析,指出不同方法的特点。构建测试系统环境,在不同遥信去抖方法下,对SOE结果进行对比统计和分析。最后建议能够统一遥信去抖设计方法,保证SOE记录的精确性。

Analysis of subtractive dithering method for signals measurement in substation automation system

To distinguish the sequence of events during power failure,it needs SOE records greatly.Through this,the operator can handle the incident,analyse and judge the power failure correctly.It needs to consider and resolve the problem that how to distinguish the dithering signals and ensure the SOE not misinformation.This paper analyses the methods of subtractive dithering signals,and points out characters of every method.A testing environment is set up,every method would be tested here.Finally,one subtractive dithering method for signals measurement is putforward to ensure the accuracy of SOE records.