摘要
为解决传统继电保护定值整定及管理存在的问题,文中设计和开发了一套继电保护定值在线校核与预警系统。该系统从能量管理系统和故障信息系统中获取电网模型、在线运行状态和保护运行定值,通过数据匹配、模型拼接和信息融合对电网一二次系统进行综合建模,采用综合定值比较和保护范围比较的方法进行校核计算,利用影响域辨识和故障预备量排序实现定值快速预警。该系统可对全网各类保护定值的性能进行校核,并可在当前运行方式的基础上自动进行方式预想和预警,在实际工程应用中取得了良好应用效果。
In order to solve the problems in traditional relay protection calculation and management,the online verification and early-warning system for protective relay is designed and developed. The proposed system is able to obtain system model,real-time operation condition of the power grid from energy management system,and relay settings from fault information system. The integration model of primary and secondary system of power network is constructed via data matching,model integration and information fusion. The proposed verification method synthesizes the comparison of setting value and protective range. Functionality of early-warning is realized by identification of influence domain and preparative value ranking. The performance of different relay settings is verified under current operation condition and supposed operation condition with selected contingency to identify improper or incorrect relay settings and particular operation condition which can lead abnormal.
出处
《电力系统及其自动化学报》
CSCD
北大核心
2015年第6期91-97,共7页
Proceedings of the CSU-EPSA
关键词
继电保护
在线校核
在线预警
校核计算方法
预想运行方式
protective relay
online verification
online early-warning
verification method
predictive operation condition
