电流互感器
电流(流体)
变压器
误差分析
补偿(心理学)
电子工程
电气工程
工程类
控制理论(社会学)
电压
计算机科学
数学
精神分析
人工智能
控制(管理)
应用数学
心理学
作者
Ai Xin,Hai Bao,Yun Heub Song
出处
期刊:IEEE Transactions on Power Delivery
[Institute of Electrical and Electronics Engineers]
日期:2005-01-01
卷期号:20 (1): 11-14
被引量:24
标识
DOI:10.1109/tpwrd.2004.837820
摘要
A novel scheme for error current compensation of current transformers (CTs) is presented. The method is to apply Hall current transducers (HCTs) based on magnetic force balance to detect and compensate the error current so as to eliminate the error of CT caused by its exciting current. Theoretical analysis and experimental tests clearly illustrate the performance of the proposed scheme. After compensation, the accuracy of the common CT is increased 500 times from 0.5% (5000 ppm) to 0.001% (10 ppm) at the condition of burden Z/sub b/=1 /spl Omega/, cos /spl phi/=1. A self-calibrating method is adopted for a current transformer with the wind ratio of 1:1.
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