变电站工频磁场干扰对泄漏电流传感器准确度影响研究  

Study on the Influence of Power Frequency Magnetic Field Interference in Substation on the Accuracy of Leakage Current Sensor

作　　者：于大洋[1] 张聪聪 王磊 王冬至 刘英男 李亚锦[1] 陆琦宏 YU Dayang;ZHANG Congcong;WANG Lei;WANG Dongzhi;LIU Yingnan;LI Yajin;LU Qihong(School of Eletrical Engineering,Shandong University,Jinan 250061,China;Dongying Power Supply Company of State Grid Corporation of China,Shandong Dongying 257091,China;Maintenance Company,State Grid Shandong Electric Power Company,Jinan 250021,China;Shandong University Electric Power Technology Co.,Ltd.,Jinan 250101,China)

机构地区：[1]山东大学电气工程学院,济南250061 [2]国网山东省电力公司东营供电公司,山东东营257091 [3]国网山东省电力公司检修公司,济南250021 [4]山东山大电力技术股份有限公司,济南250101

出　　处：《高压电器》2021年第6期107-114,共8页High Voltage Apparatus

基　　金：国网山东省电力公司科技项目资助项目(SGSDDY00FCJS1800219)。

摘　　要：文中在某1000 kV特高压变电站测试了避雷器泄露电流传感器的实际运行问题:采集数据误差过大、变化剧烈。针对1000 kV特高压变电站避雷器泄漏电流数据采集不准确的问题,在变电站电抗器区域搭建试验环境,验证避雷器泄漏电流传感器采集精度受工频磁场影响,工频磁场强度越大,避雷器泄露电流传感器采集误差越大,两者近似线性关系。在实验室内搭建工频磁场仿真环境,对不同结构的电流传感器在工频磁场干扰下进行采集精度试验,结果表明无源全封闭式泄漏电流传感器抗工频磁场能力最好,为特高压变电站在线监测设备的设计和选型提供了参考。In this paper,the actual operation of the arrester leakage current sensor is tested in a 1000 kV UHV substation.There are some problems,such as too large data acquisition error and drastic changes.To solve the problem of inaccurate data collection of lightning arrester leakage current in UHV substation purposefully.Verify that the arrester leakage current sensor acquisition accuracy is affected by the power frequency magnetic field under setting up a test environment in the substation reactor area,both are approximately linear.Establish a power frequency magnetic field simulation environment in the laboratory,perform acquisition accuracy tests on current sensors with different structures under power frequency magnetic field interference,it shows that the passive fully enclosed leakage current sensor has the best resistance to power frequency magnetic field.It provides a reference for the design and selection of on-line monitoring equipment for UHV substation.

关 键 词：特高压变电站 避雷器 泄漏电流 110 kV电抗器 工频磁场干扰 

分 类 号：TM63[电气工程—电力系统及自动化]