自适应光学电流互感器的基础理论研究.pdfVIP

25 卷 22 期 中 国 电 机 工 程 学 报 Vol.25 No.22 Nov. 2005 2005 年11 月 Proceedings of the CSEE 2005 Chin.Soc.for Elec.Eng. 文章编号：0258-8013 （2005 ）22-0021-06 中图分类号：TM452 文献标识码：A 学科分类号：47040 自适应光学电流互感器的基础理论研究 1 1 2 1 1 2 李岩松 ，郭志忠 ，杨以涵 ，于文斌 ，张国庆 ，高 桦 1．哈尔滨工业大学电气工程学院，黑龙江省 哈尔滨市 150001；2．华北电力大学，北京市 昌平区102206 ） RESEARCH ON THE BASIC THEORY OF ADAPTIVE OPTICAL CURRENT TRANSDUCER 1 1 2 1 1 2 LI Yan-song , GUO Zhi-zhong , YANG Yi-han , YU Wen-bin , ZHANG Guo-qing , GAO Hua （1. School of Electrical and Automation, Harbin Institute of Technology, Harbin 150001, Heilongji ang Province, China;2. North China Electric Power University, Changping District, Beijing 102206, China ） ABSTRACT: Aiming at these two severe problems OCT faced, 连续运行了25 个月，运行结果表明，自适应光学电流互 temperature excursion and no operating stability that baffled 感器具有长期运行稳定性。 its utility in power system, the Adaptive Optical Transducing 关键词：电力系统；光学电流互感器；法拉 磁光效应；自 Principle and the Solenoid Collecting Magnetic Field Optical 适应控制 Path are presented to solve them, after analyzing the open loop mechanism of OCT. According to IEC660044-8, the 1 引言 performance of AOCT is examined roundly applying the 经过几十年的发展，基于法拉第磁光效应的 standard testing system. The results indicate that under the [1-3] steady state the measurement precision of the AOCT has OCT 的研究已经取得了许多可喜的成果 。然而， already reached class 0.2 and under the transient state the 长期以来 OCT 的两大世界性难题——测量温漂问 maximal peak instantaneous alternating current component 题和不能长期稳定运行一直是阻碍 OCT 实用化的 error of the AOCT has already reached class 1. AOCT was 最大障碍。由于受环境温度的影响，OCT 测量精度 installed in a substation in baoding city HeBei province 始终达不到电力系统计量要求。以往，许多研究者 and has been working continuously twenty five months. The 希望通过Faraday 磁光材料品行的改善达到 小温 operating results have shown that the AOCT designed is 漂影响的目的，但至今没有取得期望的突破性进 operated stably. 展。人们也设计了巧妙的光学结构，提出了温度补 KEY WORDS: Power system; Optical current transducer [4] 偿方法 ，但是，由于光学传感材料和光学加工不 OCT ; F