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一种MV级峰化电容一体化电容分压器的研制

李奇胜 李俊娜 李楚男 王永亮 龚渝涵 刘建

李奇胜, 李俊娜, 李楚男, 等. 一种MV级峰化电容一体化电容分压器的研制[J]. 强激光与粒子束. doi: 10.11884/HPLPB202436.230218
引用本文: 李奇胜, 李俊娜, 李楚男, 等. 一种MV级峰化电容一体化电容分压器的研制[J]. 强激光与粒子束. doi: 10.11884/HPLPB202436.230218
Li Qisheng, Li Junna, Li Chunan, et al. Development of a MV level peaking capacitor integrated capacitor voltage divider[J]. High Power Laser and Particle Beams. doi: 10.11884/HPLPB202436.230218
Citation: Li Qisheng, Li Junna, Li Chunan, et al. Development of a MV level peaking capacitor integrated capacitor voltage divider[J]. High Power Laser and Particle Beams. doi: 10.11884/HPLPB202436.230218

一种MV级峰化电容一体化电容分压器的研制

doi: 10.11884/HPLPB202436.230218
基金项目: 国家自然科学基金项目(52177157)
详细信息
    作者简介:

    李奇胜,3121304202@stu.xjtu.edu.cn

    通讯作者:

    李俊娜,uvlina@126.com

  • 中图分类号: TM83

Development of a MV level peaking capacitor integrated capacitor voltage divider

  • 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以及影响低频响应因素的分析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的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11071,2#探头分压比为15148。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。
  • 图  1  峰化电容一体化电容分压器结构图

    Figure  1.  Structure diagram of peaking capacitor integrated capacitor voltage divider

    图  2  电容分压器理论电容分布分析图

    Figure  2.  Theoretical capacitance distribution analysis diagram of capacitive voltage divider

    图  3  电容分压器理论分压比电路图

    Figure  3.  Circuit diagram of theoretical voltage division ratio simulation of capacitive voltage divider

    图  4  两电压探头仿真方波响应波形图

    Figure  4.  Simulated square wave response waveform diagram of two voltage probes

    图  5  方波标定系统示意图

    Figure  5.  Schematic diagram of square wave calibration system

    图  6  两电压探头的方波响应输出波形

    Figure  6.  Output waveform of square wave response

    图  7  实验平台示意图

    Figure  7.  Schematic diagram of the experimental platform

    图  8  高压在线标定的典型波形图

    Figure  8.  Typical waveform diagram of high voltage online calibration

    图  9  不同电压等级下探头的分压比

    Figure  9.  Voltage division ratio of the probes at different voltage levels

    图  10  峰化电容器沿面电场分布图

    Figure  10.  Peaking capacitor simulation electric field distribution diagram

    图  12  考虑等离子体影响前后的各层结构电容分布

    Figure  12.  Capacitance distribution of each layer structure before and after considering the influence of plasma

    图  11  小气隙局部放电示意图

    Figure  11.  Schematic diagram of small air gap partial discharge

    图  13  标定实验平台示意图

    Figure  13.  Schematic diagram of calibration experimental platform

    表  1  低压臂电容及补偿电阻实测值

    Table  1.   Measured value of low voltage arm capacitance and compensation resistor

    probe number compensation resistor resistance/kΩ low voltage arm capacitance/nF R1C2/μs
    1# 2.395 3.343 8.2
    2# 2.412 4.846 11.7
    下载: 导出CSV

    表  2  电压探头对不同脉宽信号的响应仿真结果

    Table  2.   Simulation results of voltage probe response to different pulse width signals

    pulse width τ R1C2/τ flat top descent/% R1C2/τ flat top descent/%
    1# 2#
    100 82.0 1.0 117.0 0.8
    500 16.4 5.1 23.4 3.7
    1000 8.2 10.0 11.7 6.6
    下载: 导出CSV

    表  3  两探头的响应时间与分压比

    Table  3.   Response time and division ratio of two probes

    probe number source signal leading time/ns measuring signal leading time/ns response time/ns voltage division ratio
    1# 12.00 12.80 4.45 13444
    2# 11.52 13.12 6.28 17314
    下载: 导出CSV

    表  4  更高等级峰化电容耐受电压测量结果

    Table  4.   Response time and division ratio of two probes

    Marx main
    circuit charging
    voltage/kV
    The peak capacitance
    voltage measured
    by the 1# probe/kV
    The peak capacitance
    voltage measured by
    the 2# probe/kV
    2# probe actual
    measurement
    signal/V
    2# probe voltage
    division
    ratio
    2# probe average
    voltage division
    ratio
    30 496.42 495.25 32.69 15185 15283
    35 583.03 579.42 38.25 15242
    40 671.22 666.02 43.97 15265
    45 779.68 779.02 51.23 15219
    48 825.21 806.31 53.23 15502
    下载: 导出CSV
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  • 收稿日期:  2023-07-12
  • 修回日期:  2024-05-29
  • 录用日期:  2024-03-27
  • 网络出版日期:  2024-06-04

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