环境因素对12 kV充气柜可分离连接器绝缘性能的影响  

Influence of Environmental Factors on Insulation Performance of Separable Connector for 12 kV Gas Filling Switchgear Cabinet

作　　者：王东方 牛勃 王景 马永强 邰晨凡 马飞越 WANG Dongfang;NIU Bo;WANG Jing;MA Yongqiang;TAI Chenfan;MA Feiyue(Wuzhong Company of State Grid Ningxia Power Co.,Ningxia Wuzhong 751100,China;Power Research Institute of State Grid Ningxia Power Co.,Yinchuan 750011,China)

机构地区：[1]国网宁夏电力有限公司吴忠供电公司,宁夏吴忠751100 [2]国网宁夏电力有限公司电力科学研究院,银川750011

出　　处：《高压电器》2025年第2期10-16,共7页High Voltage Apparatus

基　　金：国网宁夏电力有限公司科技项目资助(5229WZ230002)。

摘　　要：文中旨在研究环境因素对12 kV充气柜可分离连接器绝缘性能的影响,同时为局放与化学融合检测法在12 kV充气式开关柜绝缘故障监测领域的应用提供实践依据。设计实验模型与实验方法,首先研究环境温、湿度对12 kV充气柜可分离连接器绝缘性能的影响,然后采用升高测试电压直至绝缘击穿的测试方式,加速模拟高湿度、高污秽、高盐度引发绝缘故障的发展过程,并采用电化学传感器对绝缘老化气体产物进行监测,研究绝缘击穿后绝缘材料裂解产物的变化规律。实验结果表明,高温、高湿环境以及高盐度条件均会降低12 kV充气柜可分离连接器的绝缘性能,绝缘材料裂解会产生一氧化氮、二氧化氮、非甲烷总烃等气体,且可分离连接器的绝缘性能越差,发生绝缘故障时生成上述3种气体的体积分数越高,可作为12 kV充气柜绝缘状态评估的指示性气体。The purpose of this paper is to study the influence of environmental factors on the insulation performance of the separable connector for 12 kV gas filling cabinet and,at the same time,to provide a practical basis for the application of partial discharge discharge and chemical fusion detection in the field of insulation fault monitoring of 12 kV gas filling switchgear cabinet.The experimental model and experimental method are designed,the influence of environmental temperature and humidity on the insulation performance of the separable connector for 12 kV gas filling switchgear cabinet is studied firstly.Then,the development process of insulation fault due to high humidity,high contamination and high salinity is simulated quickly by using the method of rising the test voltage till insulation breakdown.The electrochemical sensors are used to monitor the aging products of insulation gas and study the variation of the cracking products of insulation materials after insulation breakdown.The experimental results show that high temperature,high humidity and high salinity conditions can reduce the insulation performance of the separable connector of 12 kV gas-filling switchgear cabinet,the cracking of insulation materials can produce such gases as nitric oxide,nitrogen dioxide and non-methane total hydrocarbons and,furthermore,in case of insulation fault,the worse the insulation performance of the separable connector is,the higher the concentration of the above three gases generated is,which can be used as an indicator gas for the insulation status assessment of the 12 kV gas filling switchgear cabinet.

关 键 词：可分离连接器 环境因素 绝缘性能 局部放电 气体检测 

分 类 号：TM591[电气工程—电器]