应对变压器涌流影响的线路零序保护防误动策略  

Anti-Misoperation Strategy of Line Zero Sequence Protection Against Transformer Inrush Current

作　　者：陈永昕 张侃君 黎恒烜 张浏亮 杨刚 滕捷 付彬鑫 CHEN Yongxin;ZHANG Kanjun;LI Hengxuan;ZHANG Liuliang;YANG Gang;TENG Jie;FU Binxin(Electric Power Research Institute,State Grid Hubei Electric Power Co.,Ltd.,Wuhan Hubei 430077,China;Hubei Fangyuan Dongli Electric Power Science&Research Co.,Ltd.,Wuhan Hubei 430077,China;Xianning Power Supply Company,State Grid Hubei Electric Power Co.,Ltd.,Xianning Hubei 437000,China;Huanglongtan Hydropower Plant,State Grid Hubei Electric Power Co.,Ltd.,Shiyan Hubei 442000,China)

机构地区：[1]国网湖北省电力有限公司电力科学研究院,湖北武汉430077 [2]湖北方源东力电力科学研究有限公司,湖北武汉430077 [3]国网湖北省电力有限公司咸宁供电公司,湖北咸宁437000 [4]国网湖北省电力有限公司黄龙滩水力发电厂,湖北十堰442000

出　　处：《湖北电力》2022年第4期35-41,共7页Hubei Electric Power

基　　金：国家电网有限公司科技项目(项目编号:5500-202099517A-0-0-00)。

摘　　要：随着高阻抗变压器的广泛应用,其特殊的绕组结构导致励磁涌流过大,现场多次出现变压器空投时线路零序过流保护误动。目前尚缺乏对这一问题的有效应对策略,尝试通过应用人工神经网络(artificial neuralnetwork,ANN)对变压器涌流进行识别,从而达到制动线路零序过流保护的目的。从人工神经网络的选取、训练样本数据的确定、对零序保护的影响等方面进行研究,提出基于ANN的变压器涌流识别判据,将ANN输出与PSCAD/EMTDC仿真进行对比,验证了判据的有效性,并讨论其应用方案。防误动策略避免了复杂的整定过程和计算过程,为智能算法在保护中的应用提供了一种可行路径。With the wide application of high impedance transformer,its special winding structure leads to excessive excitation inrush current,and the zero sequence overcurrent protection mis-operation occurs many times in the field when the transformer runs without any load.At present,there is no effective strategy to deal with this problem.This paper tries to identify transformer inrush current by applying artificial neural network(ANN)so as to avoid the zero-sequence overcurrent protection mis-operation.The paper first makes a study on the selection of artificial neural network,the determination of training sample data and the influence of zero order protection,then proposes the transformer inrush current identification criterion based on ANN,and compares the ANN output with PSCAD/EMTDC simulation.Finally,the paper verifies the validity of the criterion,and also discusses its application scheme.The proposed anti-misoperation strategy avoids the complex setting process and calculation process,and provides a feasible path for the application of intelligent algorithm in protection.

关 键 词：励磁涌流 ANN 零序保护 高阻抗变压器 网络训练 智能算法 

分 类 号：TM77[电气工程—电力系统及自动化]