High Performance Primary Converter of Optically Powered ECT

摘要：

A high performance primary converter of optically powered electronic current transformer (ECT) based on low power current transformer (LPCT) used in high voltage power system has been developed to overcome the disadvantages of the measuring accuracy of air core coils that can be influenced by temperature characteristic and manufacturing technology. The principle of LPCT and the structure of ECT are presented in the paper first .The paper also describes primary power supply that uses laser light to transfer power to the primary converter and communicate with the primary converter. The primary converter with low power consumption includes two primary sensor data channels having different gain settings with active temperature compensation and self-calibration at the high voltage side. This allows even higher accuracy over an extended temperature range and a wide current range.

关键词： electronic current transformer optically powered low power consumption low power current transformer primary converter

作者: QIU Honghui DUAN Xiongying DONG Huajun

作者单位: Department of Electrical and Electronics Engineering, Dalian University of Technology, Dalian, 116023, P.R. China

会议类型: 国际会议

会议名称: 第七届国际测试技术研讨会

会议地点: 北京

会议语种:英文

在线出版日期: 2007-08-05（万方平台首次上网日期，不代表论文的发表时间）