一种MV级峰化电容一体化电容分压器的研制  

Development of a MV level peaking capacitor integrated capacitor voltage divider

作　　者：李奇胜 李俊娜[1] 李楚男 王永亮 龚渝涵 刘建 Li Qisheng;Li Junna;Li Chu’nan;Wang Yongliang;Gong Yuhan;Liu Jian(State Key Laboratory of Electrical Insulation of Power Equipment,Xi’an Jiaotong University,Xi’an 710049,China)

机构地区：[1]西安交通大学电力设备电气绝缘国家重点实验室,西安710049

出　　处：《强激光与粒子束》2024年第9期111-119,共9页High Power Laser and Particle Beams

基　　金：国家自然科学基金项目(52177157)。

摘　　要：峰化电容器由于结构紧凑一般采用间接测量其承受的电压,而峰化电容电压的直接测量一直是难以解决的问题。为了解决该问题,以峰化电容器为基础,研制了一种新型结构的电阻补偿式自积分型峰化电容一体化电容分压器。其次,根据分压器的新型结构分析了峰化电容一体化电容分压器的理论分压比,给出了理论分压比计算公式,分析了影响低频响应的因素并进行了电路仿真验证。同时,开展了方波标定实验,得到了两个探头的分压比及响应时间,且探头响应时间均小于6.2 ns。此外,为了得到更准确的分压比并验证正常工作状态下该一体化电容分压器分压比的稳定性,进行了高压在线标定实验,得到了1#探头分压比为11 071,2#探头分压比为15 148。且在更高电压等级下,该电容分压器探头的测量相对误差较小,分压比稳定性良好。Peaking capacitors,due to their compact structure,generally use indirect measurement of the voltage they bear,and direct measurement of their voltage has always been a difficult problem to solve.To solve this problem,we developed a new type of resistance compensation type self-integrating peak capacitor integrated capacitor voltage divider based on peaking capacitors.Secondly,based on the new structure of the voltage divider,the theoretical voltage ratio of the peak capacitance integrated capacitor voltage divider was analyzed.The calculation formula for the theoretical voltage ratio and the analysis of factors affecting low-frequency response were provided,and circuit simulation verification was carried out.At the same time,square wave calibration experiments were conducted,and the partial pressure ratio and response time of the two probes were obtained,and the response time of the probes was less than 6.2 ns.In addition,to obtain a more accurate voltage ratio and verify the stability of the voltage ratio of the integrated capacitor voltage divider under normal working conditions,high-voltage online calibration experiments were conducted,and the voltage ratio of probe 1 was 11071 and probe 2 was 15148.Moreover,at higher voltage levels,the relative measurement error of the capacitive voltage divider probe is relatively small,and the voltage divider ratio has good stability.

关 键 词：峰化电容器 电阻补偿 电容分压器 分压比 高压脉冲 

分 类 号：TM83[电气工程—高电压与绝缘技术]