摘要
金属氧化物避雷器是电力系统限制过电压和释放雷电流的重要高压电气设备,在长期运行的情况下会出现阀片老化或整体受潮等缺陷。对金属氧化物避雷器运行状态进行检测,及时有效发现避雷器老化及受潮缺陷,是保障电力系统安全稳定运行的重要措施。对500kV各种故障下的避雷器加压试验,利用温度传感器检测内部温升和红外成像测温检测外表温度的方法综合研究避雷器老化及受潮故障的温度分布特征,结果表明不同缺陷类型的温度分布特征不同,内置温度传感器对反映避雷器的各种缺陷特征更为敏锐,可为避雷器缺陷识别提供了参考。
MOA is an important high voltage electrical equipment that limits overvoltage and discharge lightning current from power systems,in the case of long-term operation,MOA will appear valve aging or the overall damp and other defects.It is important to ensure the safe and stable operation of the power system by detecting the operating status and timely found the aging and moisture defects of the MOA.For the 500kV MOA,voltage test under various faults is carried out,the temperature sensor is used to detect the internal temperature rise and the infrared image temperature measurement to detect the external temperature.The temperature distribution characteristics of the MOA aging and moisture fault are comprehensively studied.The results show that different defect types have different temperature distribution characteristics,built-in temperature sensor is more sensitive to reflect the various characteristics of the arrester,which provides a reference for the identification of arrester defects.
作者
魏绍东
邓维
雷红才
毛文奇
史志强
刘卫东
WEI Shaodong;DENG Wei;LEI Hongcai;MAO Wenqi;SHI Zhiqiang;LIU Weidong(State Grid Hunan Maintenance Company,Changsha 410004,China;School of Electrical and information Engineering,Changsha University of Science&Technology,Changsha 410114,China)
出处
《电瓷避雷器》
CAS
北大核心
2019年第2期109-114,共6页
Insulators and Surge Arresters
关键词
避雷器
老化
受潮
红外成像
温升
MOA
aging
damping
infrared imaging
temperature rise
