继电保护定值在线校核及预警系统的研究与实践  

Research and Practice of Online Checking and Early Warning System for Relay Protection Setting Value

作　　者：王杰 杨健 孙涛 伊波 叶秋红 WANG Jie;YANG Jian;SUN Tao;YI Bo;YE Qiuhong(State Grid Wuzhong Electric Power Company,Wuzhong 751100,China)

机构地区：[1]国网吴忠供电公司,宁夏吴忠751100

出　　处：《微型电脑应用》2022年第3期79-82,共4页Microcomputer Applications

基　　金：国网宁夏吴忠供电公司科技项目(SGNXWG00DKJS1900516)。

摘　　要：为了提升电力系统运行的安全稳定性,开展了继电保护定值的在线校核及预警系统的研究与实践。预警系统主要由电力系统综合模型拼接模块、信息融合模块、计算模块与输出模块等组成。电力系统综合模型拼接模块通过集成电网一次模型与电网零序参数、互感参数及继电保护模型为定值校核提供支持;信息融合模块根据电力系统综合模型拼接模块获取当前运行模式,计算待校核定值;计算模块中包含故障、潮流与校核计算相关的技术程序,利用这些程序计算核校与预警值,利用输出模块输出校核与预警结果。实践结果显示,该系统能够实现继电保护定值校核与预警,使电力系统年故障率下降13%以上,说明该系统可有效保证电力系统运行的安全稳定性。In order to improve the security and stability of power system operation, research and practice of relay protection setting online check and early warning system are carried out. The system is mainly composed of power system integrated model splicing module, information fusion module, calculation module and output module. The power system integrated model splicing module provides support for the setting value verification by integrating the primary model of the power grid with the zero sequence parameters, mutual inductance parameters and relay protection model. The information fusion module obtains the current operation mode according to the power system comprehensive model splicing module, and calculates the constant value to be checked. The calculation module contains the technical procedures related to fault, power flow and check calculation. The output module has programs to calculate the checking and warning values. The practical research shows that the system can realize the check and early warning of relay protection setting value, and reduce the annual failure rate of power system by more than 13%, which shows that the system can effectively ensure the safety and stability of power system operation.

关 键 词：继电保护 定值校核 定值预警 故障计算 潮流计算 

分 类 号：TM734[电气工程—电力系统及自动化]