基于罗氏线圈的VSC-HVDC系统的混合线路故障定位  

Location of line faults in hybrid VSC-HVDC system based on Rogowski coil

作　　者：汪磊 刘辉[1] 邱诗怡 姜晓彤 钱金良[1] Wang Lei;Liu Hui;Qiu Shiyi;Jiang Xiaotong;Qian Jinliang(School of Electrical and Electronic Engineering,Hubei University of Technology,Wuhan 430068,China)

机构地区：[1]湖北工业大学电气与电子工程学院,武汉430068

出　　处：《电测与仪表》2018年第21期125-131,共7页Electrical Measurement & Instrumentation

基　　金：国家自然科学基金青年项目(51607060)

摘　　要：高压直流输电系统以其诸多优点在现代输电网络应用中越来越广泛,根据具体的需求产生了许多电缆-架空线混合线路。实现线缆混合线路的故障定位,具有很大的实用性。鉴于单端行波测距难以识别波头,以及现代数据采集(DAQ)技术和GPS技术的发展,根据双端行波故障测距的原理,提出了针对两段式和三段式的VSC-HVDC的混合线路的测距的算法。在PSCAD/EMTDC中搭建仿真模型,利用Rogowski线圈测量两端的电流输出电压,通过PSCAD的图形输出窗口清晰地识别波头,读出波头到达时刻,实现高精度的故障定位,具有很强的鲁棒性。With many advantages of HVDC transmission system,it has become more and more widely used in the modern transmission network.Due to the specific needs,a number of cable-overhead line hybrid lines have been applied.Therefore,it is very practical to achieve the fault of hybrid lines location.In view of the difficulty of identifying the wave head and the development of modern data acquisition(DAQ)and GPS technology,this paper proposes a new HVDC hybrid line distance measurement algorithm based on the principle of double-ended traveling wave fault location for two-segment system and three-segment system.Simulation model is built in the PSCAD/EMTDC.The Rogowski coil is adopted to measure the current and output voltage at both ends,the wave head can be clearly identified through the PSCAD graphics output window,and the arrival time of the wave head can be read to achieve high precision fault location with a strong robustness.

关 键 词：故障测距 混合线路 VSC-HVDC PSCAD/EMTDC ROGOWSKI线圈 

分 类 号：TM721.1[电气工程—电力系统及自动化]