考虑保护启动信息的电网故障诊断解析模型及告警方法  

Analytic Model and Alarming Method of Grid Fault Diagnosis Considering Protection Startup Information

作　　者：曹祺 肖仕武 焦邵麟 周放歌 CAO Qi;XIAO Shiwu;JIAO Shaolin;ZHOU Fangge(State Key Laboratory of New Energy Power System(North China Electric Power University),Changping District,Beijing 102206,China;Power Dispatch and Control Center,Guangdong Power Grid Co.,Ltd.,Guangzhou 510032,Guangdong Province,China)

机构地区：[1]新能源电力系统国家重点实验室(华北电力大学),北京市昌平区102206 [2]广东电网有限责任公司电力调度控制中心,广东省广州市510032

出　　处：《现代电力》2024年第3期401-411,共11页Modern Electric Power

基　　金：国家重点研发计划项目(2016YFB0900500)。

摘　　要：当高压电网发生故障时,在关键保护或断路器元件出现误动或信息误报、漏报时,现有故障诊断解析模型会出现误判。为解决这一问题,提出考虑保护启动信息的电网故障诊断解析模型及告警方法。首先,在传统故障诊断解析模型的基础上,增加了保护期望启动状态与实际状态差异值,构建了考虑保护启动信息的电网故障诊断适应度函数,并基于粒子群算法进行寻优计算,得到故障元件,解决了关键保护或断路器元件出现误动作或信息误报、漏报时诊断错误的问题。然后,基于所得到的故障元件,利用保护启动信息生成保护启动层级图,对启动异常的保护进行告警。最后,利用推理链的方法对整个故障过程进行完整解析。新解析模型的灵敏度和准确度与传统方法相比有较大提升,且考虑保护启动信息的保护告警方法能对启动信息异常的保护进行提前告警,具有良好的应用前景。When a fault occurs in the high-voltage power grid,the existing fault diagnosis analytical model will misjudge when the key protection or circuit breaker components mis-operate or the information is falsely reported or missed.In order to solve this problem,this paper proposes a power grid fault diagnosis analytical model and alarm method considering protection start-up information.Fristly,on the basis of the traditional fault diagnosis analytical model,the difference between the expected start-up state and the actual state of the protection is added,and the fitness function of the power grid fault diagnosis considering the start-up information of the protection is constructed.Based on the particle swarm optimization algorithm,the fault components are obtained by optimization calculation,which solves the problem that the key protection or circuit breaker components have mis-operation or information false alarm and missed alarm.Secondly,based on the obtained fault component,the protection start-up information is used to generate the protection start-up level diagram to alarm the abnormal protection.Finally,the whole fault process is analyzed by the method of inference chain.The sensitivity and accuracy of the new analytical model are greatly improved compared with the traditional method,and the protection alarm method considering the protection start-up information can warn the protection with abnormal start-up information in advance,which has a good application prospect.

关 键 词：故障诊断 解析模型 高压电网 启动信息 保护告警 

分 类 号：TM77[电气工程—电力系统及自动化]