The Influence of Dynamic Response Characteristics of Electronic Current Transformer on Line Differential Protection

2020 5th International Conference on Power and Renewable Energy (ICPRE) Pub Date : 2020-09-12 DOI:10.1109/ICPRE51194.2020.9233295

Haozhong Xing, Jie Wu, Jun Zhong, Jiping Lu

{"title":"The Influence of Dynamic Response Characteristics of Electronic Current Transformer on Line Differential Protection","authors":"Haozhong Xing, Jie Wu, Jun Zhong, Jiping Lu","doi":"10.1109/ICPRE51194.2020.9233295","DOIUrl":null,"url":null,"abstract":"With a large number of intelligent substations put into operation, the application of Rogowski coil electronic current transformer is becoming more and more widely. However, in practice, there have been too many power grid accidents caused by its dynamic response characteristics, which lead to protection maloperation. Based on these accidents, this paper expounds the mechanism of generating dynamic additional components of Rogowski coil electronic current transformer and the principle of line differential protection,This paper analyzes the cause of protection misoperation, and builds a power grid model in PSCAD simulation platform to simulate the transmission and transformation of Rogowski coil electronic current transformer when the line is closed without load. By simulating the output results under different parameter structures, the generation mechanism of dynamic additional component is verified, and the suppression measures are found, which proposes the suggestions for preventing protection misoperation.","PeriodicalId":394287,"journal":{"name":"2020 5th International Conference on Power and Renewable Energy (ICPRE)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2020-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2020 5th International Conference on Power and Renewable Energy (ICPRE)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ICPRE51194.2020.9233295","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}

引用次数: 0

Abstract

With a large number of intelligent substations put into operation, the application of Rogowski coil electronic current transformer is becoming more and more widely. However, in practice, there have been too many power grid accidents caused by its dynamic response characteristics, which lead to protection maloperation. Based on these accidents, this paper expounds the mechanism of generating dynamic additional components of Rogowski coil electronic current transformer and the principle of line differential protection,This paper analyzes the cause of protection misoperation, and builds a power grid model in PSCAD simulation platform to simulate the transmission and transformation of Rogowski coil electronic current transformer when the line is closed without load. By simulating the output results under different parameter structures, the generation mechanism of dynamic additional component is verified, and the suppression measures are found, which proposes the suggestions for preventing protection misoperation.

查看原文本刊更多论文

电子式电流互感器动态响应特性对线路差动保护的影响

随着大量智能变电站的投入运行，Rogowski线圈式电子式电流互感器的应用越来越广泛。然而，在实践中，由于其动态响应特性导致电网事故过多，导致保护误操作。针对这些事故，阐述了Rogowski线圈电子电流互感器产生动态附加分量的机理和线路差动保护原理，分析了保护误动作的原因，并在PSCAD仿真平台中建立电网模型，模拟了Rogowski线圈电子电流互感器在线路空载合闸时的输变电过程。通过对不同参数结构下的输出结果进行仿真，验证了动态附加分量的产生机理，找到了抑制措施，提出了防止保护误动作的建议。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

2020 5th International Conference on Power and Renewable Energy (ICPRE)

自引率

0.00%

发文量