特高压用交流电容器局部放电抽检试验技术研究  

Study on the random handover partial discharge test technology of UHV AC capacitor

作　　者：马鑫晟 龙凯华 马继先 郭绍伟 蔡巍 刘亮 王建伟 

机构地区：[1]国网冀北电力有限公司电力科学研究院,北京100045

出　　处：《电力系统保护与控制》2018年第3期145-151,共7页Power System Protection and Control

基　　金：国家电网公司科技项目"特高压交流主设备试验方法优化关键技术研究"~~

摘　　要：为了研究特高压用大容量电容器脉冲电流局部放电试验方法,分析了电容器电气弱点局部放电等值模型,并仿真分析了传统脉冲电流法检测特高压用大容量电容器局部放电困难的原因。针对性设计了特高压用电容器的宽频带高增益穿心电流互感器型检测阻抗。通过脉冲电流法与超声法的对比测试和脉冲电流法的背景噪声测试,验证了脉冲电流法检测特高压用电容器局部放电的可行性,丰富了特高压用电容器交接抽检试验手段,确保投运电容器质量可靠。In order to study the partial discharge pulse current test method of large capacity capacitor for UHV, the equivalent model of partial discharge of capacitor electrical weakness is analyzed and the reasons for the difficulty of detecting partial discharge in high voltage large capacity capacitor are analyzed by the simulation. A broadband high gain through CT type detection impedance is designed for UHV capacitor pertinently. Through the contrast test of pulse current method and ultrasonic method and background noise test of pulse current method, the feasibility of pulse current method to detect partial discharge of capacitor used in UHV is verified, thus enriching the UHV capacitor random handover test methods and ensuring the reliability of operating capacitor quality.

关 键 词：特高压电容器 抽检试验 局部放电 脉冲电流法 检测阻抗 

分 类 号：TM53[电气工程—电器]