基于振动检测的GIL放电性故障先兆的判别方法  

Diagnosis Method of GIL Discharge Fault Sign by Vibration Detection

作　　者：蒋龙[1] 臧春艳[2,3] 秦怡宁 张仲程[2] 黄忠康 刘耀云 JIANG Long;ZANG Chun-yan;QIN Yi-ning;ZHANG Zhong-cheng;HUANG Zhong-kang;LIU Yao-yun(Qujing Bureau of EHV Transmission Company,Qujing 655000,China;College of Electrical and Electronic Engineering,Huazhong University of Science and Technology,Wuhan 430074,China;Wuhan Intelligent Equipment Industrial Institute Co.,Ltd.,Wuhan 430070,China)

机构地区：[1]中国南方电网超高压输电公司曲靖局,云南曲靖655000 [2]华中科技大学电气与电子工程学院,湖北武汉430074 [3]武汉智能装备工业技术研究院有限公司,湖北武汉430070

出　　处：《水电能源科学》2018年第10期194-197,205,共5页Water Resources and Power

基　　金：中国南方电网有限责任公司超高压输电公司重点攻关项目(010800KK52160002)

摘　　要：气体绝缘金属封闭输电线路(GIL)在长距离电力传输中应用较广,但目前关于其故障检测与诊断的研究较少。对此,通过分析GIL设备振动信号的产生机理,对金属微粒引起的GIL内部放电性故障进行模拟试验及仿真建模研究,提出了振动信号的特征值。结果表明,可根据振动加速度信号中的特定频段范围(1~20kHz)内的信号能量占总能量的百分比大小来判断GIL内部是否产生了放电性故障先兆。研究成果可指导工程实践。The gas insulated metal-enclosed transmission line（GIL）has widely applications in the long-distance power transmission.However,there is a lack of researches on its fault detection and diagnosis.This paper discusses the mechanism of the vibration signal in the GIL equipments,as well as does some work on the simulation experiment about internal discharge fault and the relative theory analysis.It also extracts the eigenvalue of the vibration signal.The results show that the GIL discharge fault sign can be judged by the energy ration in a certain frequency zone（1-20 kHz）of the vibration acceleration signal.The research can guide engineering practices.

关 键 词：GIL 振动检测 放电性故障 金属微粒 

分 类 号：TM722[电气工程—电力系统及自动化]