保护用电流互感器励磁特性现场测试及数据分析  

Field Test and Data Analysis of Excitation Characteristics of Protective Current Transformer

作　　者：赵泽箐 史方芳 张泽慧 赵泽宁 曾庆捷 孙嘉越 ZHAO Zeqing;SHI Fangfang;ZHANG Zehui;ZHAO Zening;ZENG Qingjie;SUN Jiayue(State Grid Shandong Maintenance Company,Jinan 250000,China;State Grid Shandong Electric Power Research Institute,Jinan 250000,China;State Grid Qingdao Power Supply Company,Qingdao 266000,China;Shandong University of Science and Technology,Qingdao 266590,China)

机构地区：[1]国网山东省电力公司检修公司,山东济南250000 [2]国网山东省电力公司电力科学研究院,山东济南2500003 [3]国网青岛供电公司,山东青岛266000 [4]山东科技大学,山东青岛266590

出　　处：《国网技术学院学报》2019年第5期17-20,共4页Journal of State Grid Technology College

摘　　要：继电保护可靠动作要求保护用电流互感器将短路电流正确传变至二次侧,且误差在允许范围内。其励磁特性曲线测试是检验电流互感器的性能,判断是否满足保护正确动作要求的重要手段。此文对电流互感器的原理、误差产生原因及保护用电流互感器选型进行了阐述,对励磁特性曲线测试数据进行了分析。Reliable action of relaying protection requires that protective current transformer should transfer the short circuit current to the secondary side correctly and the error should be within the allowable range.The test of its excitation characteristic curve is an important means to examine the performance of current transformer and judge whether it meets the requirements of correct action of relaying protection.This paper elaborates the principle of current transformer,the cause of error and type selection of protective current transformer,and analyzes the test data of excitation characteristic curve.

关 键 词：电流互感器 励磁特性 直流法 

分 类 号：TM452[电气工程—电器]