摘要
阐述了暂态保护用TPY级电流互感器变比、直阻、二次时间常数、伏安特性等参数的试验方法,并按理论公式计算、分析限值条件下TPY级电流互感器性能是否满足设计、实际工况要求,并在TPY级互感器上开展试验验证,测得TPY互感器峰值误差为4.99%。为暂态保护用电流互感器的性能试验方法提供了技术参考。
This paper expounds the testing method on turn ratio, direct current（DC） resistance, second time constant and volt-ampere characteristic of TPY level current transformer for transient protection.Then calculate and analysis the TPY current transformer characteristic under limit condition, in order to ensure whether it meet the requirements of design. In addition, investigation was conducted on the TPY level current transformer and erro of peak value are measured（4.99%）. It provide technical support for current transformer which is used in transient protection.
作者
刘涛
刘俊峰
刘鑫
LIU Tao;LIU Junfeng;LIU Xin(Yunnan Electric Power Technology Company,Kunming 650217,China;State Key Laboratory of Power Transmission Equipment ＆ System Security and New Technology,Chongqing University,Chongqing 400044,China)
出处
《云南电力技术》
2018年第4期56-59,共4页
Yunnan Electric Power
关键词
电流互感器
TPY
暂态误差
暂态特性
间接试验法
current transformer
TPY
transient error
transient characteristic
indirect testing method
