基于状态估计的智能变电站继电保护容错方法  

Fault-tolerant method for intelligent substation relay protection based on state estimation

作　　者：李继红 裘愉涛 邹剑锋 金盛 林一峰[3] LI Jihong;QIU Yutao;ZHOU Jianfeng;JIN Sheng;LIN Yifeng(State Network Zhefiang Electric Power Co.,Ltd.,Hangzhou Zhejiang,310000;State Network Zhejiang Electric Power Co.,Ltd.Jiaxing Power Supply Co.,Ltd.,Jiaxing Zhejiang,314100;School of Electrical and Electronic Engineering,North China Electric University,Beijing,102206)

机构地区：[1]国网浙江省电力有限公司,浙江杭州310000 [2]国网浙江省电力有限公司嘉兴供电公司,浙江嘉兴314100 [3]华北电力大学电气与电子工程学院,北京102206

出　　处：《自动化与仪器仪表》2018年第10期227-230,共4页Automation & Instrumentation

基　　金：国网浙江省电力有限公司科技项目(5211JX150107)

摘　　要：智能变电站应用技术已较为成熟,过程层中采样值信息的网络化传输和共享使得利用冗余信息快速识别错误数据成为可能。文中借鉴了一次系统状态估计分析方法的思想,利用智能变电站信息采样的数字化和网络共享优势,在站内通过状态估计分析辨识错误采样信息,提出了一种变电站内防止继电保护装置误动的新方法。经仿真验证,所提继电保护容错方法可有效地防止采样数据错误可能导致的保护误动作,且不会影响故障时保护动作。其错误信息辨识过程计算量小,可与保护算法并行处理,满足保护动作速度的要求。经状态估计分析后,还可提升采样数据的准确度。With the continuous development and application of smart substations,the transmission and sharing of sampled value information in process layer make it possible to identify erroneous data quickly by redundant information.Based on the idea and method of state estimation,this paper presents a new method to identify the fault data and analyze the malfunction of the relay protection device by using information redundancy.The simulation results show that the proposed method can effectively prevent misoperation of relay protection caused by erroneous data,and parallel processing of error information identification and protection algorithm can meet the requirements of protection,and also can on-line monitor and diagnose data acquisition system.

关 键 词：智能变电站 状态估计 错误信息辨识 继电保护 

分 类 号：TM73[电气工程—电力系统及自动化]