基于故障时刻自同步的波形比较式多端配电网快速保护方案  

Waveform Comparison-based Fast Protection Scheme for Multi-terminal Distribution Network Based on Self-synchronization with Fault Moments

作　　者：黄见虹 翟博龙 宋福海 肖澍昱 顾本硕 刘伟 徐光福 HUANG Jianhong;ZHAI Bolong;SONG Fuhai;XIAO Shuyu;GU Benshuo;LIU Wei;XU Guangfu(State Grid Fujian Electric Power Co.,Ltd.,Fuzhou 350003,China;State Key Laboratory of Advanced Electromagnetic Engineering and Technology,Huazhong University of Science and Technology,Wuhan 430074,China;Nanjing NR Electric Co.,Ltd.,Nanjing 211102,China)

机构地区：[1]国网福建省电力有限公司,福建福州350003 [2]强电磁工程与新技术国家重点实验室(华中科技大学),湖北武汉430074 [3]南京南瑞继保工程技术有限公司,江苏南京211102

出　　处：《智慧电力》2024年第2期79-86,100,共9页Smart Power

基　　金：国家重点研发计划资助项目(2021YFB2401004);国网福建省电力有限公司科技项目资助(52130021N00C )。

摘　　要：为打破电气量的同步采集技术壁垒,并合理应对不平衡差流问题,分析了基于故障检测时刻保护数据自同步的实现方法,利用多端电流合成和Tanimoto系数构建了波形相似度比较式保护新判据。基于5G网络数据实时传输功能,形成了一套适用于多端配电网的综合快速保护方案。经PSCAD/EMTDC软件仿真,验证了所提方案能够快速可靠地确定故障区段,能很好地适应配电网复杂故障场景。To eliminate the barriers to synchronized collection of electrical quantity data and address the issue of unbalanced differential current,this paper analyzes a method for protection data self-synchronization based on fault detection moments.A waveform similarity comparison based new protection criterion is established by employing multi-terminal current synthesis and Tanimoto coefficient.Based on the real-time data transmission capability of 5G network,a comprehensive and rapid protection scheme for multiterminal distribution network is developed.Simulations with PSCAD/EMTD software show that the proposed scheme can rapidly and reliably identify fault section,matching the complex fault scenarios in the distribution network.

关 键 词：故障自同步 信息合成 Tanimoto波形相似度 5G传输 多端配电网 快速保护方案 

分 类 号：TM761[电气工程—电力系统及自动化]