短路试验电流光纤测量技术研究  

Research on Fiber-Optic Sensing Technology of Short-Circuit Test Current

作　　者：李传生[1] 赵叶铭 林飞鹏[1] 梁波[1] 王家福[1] 赵伟[1] 邵海明[1] LI Chuansheng;ZHAO Yeming;LIN Feipeng;LIANG Bo;WANG Jiafu;ZHAO Wei;SHAO Haiming(National Institute of Metrology,Beijing 100029,China;Beijing Information Science&Technology University,Beijing 100192,China)

机构地区：[1]中国计量科学研究院,北京100029 [2]北京信息科技大学,北京100192

出　　处：《计量科学与技术》2021年第5期3-7,共5页Metrology Science and Technology

基　　金：国家重点研发计划资助项目(2016YFF0102401、2016YFF0102404)。

摘　　要：针对交、直流开关电器短路试验电流校准问题,提出光纤短路电流测量方法。建立了光纤电流传感器低频动态模型,通过时域、频域特性仿真确定了闭环检测系统的参数,并计算了传感器对直流和工频短路电流的响应,结果表明传感器的动态性能能够满足跟踪被测短路电流的要求。搭建了光纤电流传感器校准装置,校准结果表明:在直流5~300 kA、工频5~50 kA范围内,传感器样机的测量准确度优于0.2%。利用光纤电流传感器进行短路电流实验测试,并与目前普遍使用的分流器和罗氏线圈比较,结果表明:对于6~100 kA的直流短路电流,分流器与光纤电流传感器之间的相对误差小于0.3%;对于10~130 kA的工频短路电流,罗氏线圈与光纤电流传感器之间的相对误差不超过0.2%。研究工作为短路试验电流的测量提供了新的解决途径。A fiber-optic short-circuit current sensing method is proposed in order to solve the short-circuit test current calibration problem for the AC and DC switch electric appliance.A low-frequency simplified dynamic model of the fiberoptic current sensor was established,and the parameters of the closed-loop signal-detection system were obtained according to the time-domain and frequency-domain characteristics simulation results.The results show that the dynamic performance of the sensor can meet the requirements of tracking the measured short-circuit current.A fiber-optic current sensor calibration device was built,and the calibration results showed that the measurement accuracy of the sensor prototype was better than 0.2%in the range of 5 to 300 kA DC and 5 to 50 kA power frequency.The comparison tests of the AC shortcircuit current between the fiber-optic current sensor and the common adopted Rogowski coil were performed.The results showed that for DC short-circuit currents from 6 to 100 kA,the relative error between the shunt and the fiber-optic current sensor was less than 0.3%.For the power frequency short-circuit currents from 10 to 130 kA,the relative error between the Rogowski coil and the fiber-optic current sensor does not exceed 0.2%.The research work provides a new solution for the short-circuit test current measurement.

关 键 词：光纤电流传感器 短路电流 大电流测量 分流器 罗氏线圈 

分 类 号：TM713[电气工程—电力系统及自动化] TM564[自动化与计算机技术—检测技术与自动化装置] TP212[自动化与计算机技术—控制科学与工程]