LC无源无线局部放电传感器  

LC Passive Wireless Partial Discharge Sensor

作　　者：徐振恒 郭世琦 吕前程 董蕾 XU Zhenheng;GUO Shiqi;LÜQiancheng;DONG Lei(Digital Grid Research Institute Co.,Ltd.,China Southern Power Grid,Guangzhou Guangdong 510555,China;School of Electronic Science&Engineering,Southeast University,Nanjing Jiangsu 210096,China)

机构地区：[1]南方电网数字电网研究院股份有限公司,广东广州510555 [2]东南大学电子科学与工程学院,江苏南京210096

出　　处：《传感技术学报》2025年第1期31-37,共7页Chinese Journal of Sensors and Actuators

基　　金：国家重点研发计划项目(2022YFB3206802)。

摘　　要：为了实现气体绝缘开关设备(GIS)内部局部放电(PD)现象的高精度检测,针对现有局部放电在线监测方法存在的一些问题,如绝缘气体泄露风险、影响GIS内部电场分布、不能准确进行放电量测量等,提出了无源无线局部放电传感器。该传感器由螺旋电感构成并安装于GIS观察窗内部。位于GIS外部的读出线圈以无线方式读取传感器信号。所提出的方案具有可行性,且未引起GIS内部电场过度畸变。通过实验室中建立的测试系统,将该传感器与商用特高频传感器进行对比,所提出的传感器信号峰值约为UHF传感器的2倍,并且LC局部放电传感器精度高达1.12 pC。实验结果验证了所提出方法的有效性,并展示了LC无源无线局部放电传感器的出色性能。A passive wireless sensor for accurately detecting partial discharge(PD)in Gas Insulated Switchgear(GIS)is introduced,ad-dressing limitations of existing monitoring methods such as gas leakage risks and inaccurate discharge measurements.The sensor is made of a helical inductor and implanted inside GIS on the observation window.A coaxially aligned readout coil,positioned outside GIS,wirelessly interrogates the PD sensor to obtain the PD signal.The proposed method ensures minimal disruption to the electric field distribution inside GIS,and has been validated through laboratory experiments.Compared to a commercial UHF sensor,the sensors sig-nal strength is enhanced twice,with a precision of 1.12 pC,demonstrating its superior performance.

关 键 词：LC传感器 局部放电检测 气体绝缘组合电器 放电量标定 

分 类 号：TP212.1[自动化与计算机技术—检测技术与自动化装置]