电力系统继电保护二次回路故障状态实时监测方法  

Real-time monitoring method for fault state of secondary circuit of relay protection in power system

作　　者：周迎伟 高明亮 杨慢慢 王学山 ZHOU Yingwei;GAO Mingliang;YANG Manman;WANG Xueshan(State Grid Chengde Power Supply Company,Hebei Chengde 067000,China)

机构地区：[1]国网承德供电公司,河北承德067000

出　　处：《自动化与仪器仪表》2021年第7期171-174,共4页Automation & Instrumentation

基　　金：国家电网有限公司科技项目“国网承德供电公司2020年群众性创新项目”(No.52010619010G)。

摘　　要：为提高电力系统继电保护二次回路故障状态实时监测能力,提出一种电力系统继电保护二次回路故障状态实时监测方法。该方法通过构建多层分布模型进行故障信息采集,结合励磁磁链基波分量检测进行故障特征信息的融合处理,并利用电流极限圆和电压极限特征检测方法进行故障特征提取,并通过实时频谱检测对故障状态参数进行定位识别,构建电力系统继电保护二次回路故障的实时定位监测模型,最终实现双端口稳压控制的电力系统继电保护二次回路故障状态实时监测。仿真结果表明,采用该方法进行电力系统继电保护二次回路故障状态实时监测的监测效率较高,提高了故障状态监测和实时诊断能力。In order to improve the real-time monitoring ability of secondary circuit fault state of power system relay protection, a real-time monitoring method of secondary circuit fault state of power system relay protection is proposed.In this method, the fault information is collected by constructing a multi-layer distributed model, and the fault feature information is fused by combining the fundamental component detection of excitation flux linkage.The fault feature is extracted by using the current limit circle and voltage limit feature detection methods, and the fault state parameters are located and identified by real-time spectrum detection, so as to construct the fault diagnosis model of power system relay protection secondary circuit Finally, the real-time fault status monitoring of the secondary circuit of the power system relay protection based on the dual port voltage stabilizing control is realized.The simulation results show that the monitoring efficiency of this method is high, and the ability of fault state detection and real-time diagnosis is improved.

关 键 词：电力系统 继电保护 二次回路 故障监测 

分 类 号：TP277[自动化与计算机技术—检测技术与自动化装置] TM351[自动化与计算机技术—控制科学与工程]