内蒙古电力技术Issue(5)：79-81,3.DOI:10.3969/j.issn.1008-6218.2015.05.014
保护用电流互感器5%误差测试数据的计算分析
Calculation Analysis of 5% Error Test Data for Protective Current Transformer
刘瑞 1郭艺博 2乌小茜 1阿敏夫1
作者信息
- 1. 内蒙古电力科学研究院，呼和浩特 010020
- 2. 内蒙古华电玫瑰营风力发电有限公司，呼和浩特 010020
- 折叠
摘要
Abstract
Make a 5% error filed test for a unit of protective current transformer in a wind farm. The test data included the load impedance and the accuracy limit coefficient, etc. Based on three different checking criteria in DL/T 886-2004 The guide for selection and calculation of current transtormers and voltage transtormers, including general choice checking, rated limiting secondary e.m.f. checking, and the accuracy limit coefficient checking, with which calculating the secondary measurement value as short-circuit fault occured on the main transformer high voltage side. The measurement result showed that the current transformer met the requirement of 5% error, which could guarantee the secondary current value correct and effective, and avoid the maloperation and refuse operation resulted from the overlarge current value.关键词
风电场/电流互感器/5%误差曲线/准确限制系数/二次电动势/性能估算Key words
wind farm/current transformer/5% error curve/accuracy limit factor/secondary e.m.f/performance evaluation分类
信息技术与安全科学引用本文复制引用
刘瑞,郭艺博,乌小茜,阿敏夫..保护用电流互感器5%误差测试数据的计算分析[J].内蒙古电力技术,2015,(5):79-81,3.
