摘要
对工程中使用的电磁式、穿心式及电子式电流互感器的原理以及应用展开详细阐述,从等效电路图、磁芯特性、一次故障及二次输出全方位分析互感器的特性。通过研究各种互感器的原理,进而对比不同类型互感器在实际应用中的优点与缺陷。根据现场对电磁式电流互感器测试,分析其10%误差曲线原理并给出解决误差过大的方案。
A detailed explanation to the principle and application of electromagnetic, cross-core and electronic current transformers which are used in project is given, and the features of transformers are analyzed comprehensively through equivalent circuit, core features, faults of primary side and secondary output. The advantages and defects of different types of current transformers in practical application are compared through researching the principle of various current transformers. According to the test of electromagnetic current transformer, the principle of 10% inaccuracy error curve is analyzed and a scheme is proposed to solve the over-inaccuracy error.
出处
《智能电网》
2014年第11期27-30,共4页
Smart Grid
关键词
电流互感器
磁芯特性
罗氏线圈
10%误差曲线
current transformer
core characteristics
Rogowski coils
10% inaccuracy error curve
