GW4隔离开关机械故障仿真与诊断技术  

Research on Mechanical Fault Simulation and Diagnosis Technology of GW4 Disconnector

作　　者：马宏明 周涛涛[2] 彭诗怡[2] 邱志斌[2] 朱琳 Ma Hongming;Zhou Taotao;Peng Shiyi;Qiu Zhibin;Zhu Lin(Electric Power Research Institute,Yunnan Power Grid Co.Ltd,Kunming 650217,China;School of Electrical Engineering and Automation,Wuhan University,Wuhan 430072,China;Technology Training Center,State Grid Hubei Electric Power Company,Wuhan 430079,China)

机构地区：[1]云南电网有限责任公司电力科学研究院,昆明650217 [2]武汉大学电气与自动化学院,武汉430072 [3]国网湖北省电力公司技术培训中心,武汉430079

出　　处：《电工技术学报》2019年第S02期501-508,共8页Transactions of China Electrotechnical Society

基　　金：湖北省自然科学基金(2018CFB145);云南电网有限责任公司电力科学研究院科技项目([2016]000303GY00013)资助

摘　　要：隔离开关是电力系统用量最多的高压开关设备之一,因安装调试不当或长时间运行后由于大气腐蚀、传动机构关节润滑脂流失、异物与灰尘积累等,导致隔离开关容易出现操作卡涩。针对隔离开关这类故障隐患的影响与诊断,目前研究较少,尚无有效检测诊断方法。本文以某GW4A 126型隔离开关为研究对象,通过建立虚拟样机模型,对比分析计算隔离开关处于正常状态、卡涩、三相不同期三种状态时的合闸力矩波形,由此提出一种基于操作力矩与操作杆转角检测的隔离开关机械故障诊断方法,并通过试验验证了该方法的可行性,在此基础上总结出基于操作力矩-转角曲线的隔离开关机械故障诊断流程,为隔离开关的安装调试、检修维护提供参考。Disconnectors are the mostly used high-voltage switchgear in power systems.Due to improper installation and debugging,loss of joint grease in the transmission mechanism,accumulation of foreign matter and dust,etc.,the disconnector is prone to jammed faults.At present,there are few studies on the diagnosis of hidden mechanical faults of disconnectors,and there is no effective detection method.In this paper,a GW4A 126 disconnector is taken as the research object.The virtual prototype model is established,and the operating torque waveforms are calculated and analyzed in the condition of normal state,jammed state,three-phase position asynchrony.Thus,a mechanical fault diagnosis method for disconnector based on operating torque and the operating shaft rotation angle is proposed,and the feasibility of the method is verified by experiments.Based on this,a mechanical fault diagnosis process of disconnector based on operating torque-angle curve is summarized,which could provide reference for the installation,debugging and maintenance of disconnector.

关 键 词：隔离开关 机械故障 故障仿真 故障诊断 操作力矩 

分 类 号：TM564.1[电气工程—电器]