一体化D-dot探头在传输线电压测量中的设计和应用

李春霞

doi:10.11884/HPLPB201830.180141

一体化D-dot探头在传输线电压测量中的设计和应用

doi: 10.11884/HPLPB201830.180141

李春霞

中国工程物理研究院应用电子学研究所, 高功率微波技术重点实验室, 四川绵阳 621900

基金项目:

国家自然科学基金项目 11475158

详细信息

作者简介:
李春霞(1983—)，女，助理研究员，从事脉冲功率技术研究；lichunxia@caep.cn

中图分类号: TM835.4
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- 被引次数: 0
出版历程
- 收稿日期: 2018-05-15
- 修回日期: 2018-06-05
- 刊出日期: 2018-09-15

Design and performance of integrative D-dot monitor for transmission line voltage measurement

Li Chunxia

Science and Technology on High Power Microwave Laboratory, Institute of Applied Electronics, CAEP, Mianyang 621900, China

摘要

摘要: 设计一种一体化D-dot探头开展脉冲功率装置中传输线高电压测量工作。D-dot探头安装在传输线外筒上，主要由基座、密封电缆头、探头外壳、绝缘层、信号电极和连接杆构成。采用同轴螺纹连接及限位结构将探头各部件形成一个整体，实现结构的紧凑性和拆装过程的完整性。利用密封BNC探头和无氧铜密封圈实现良好的密封性能，同时减小探头的弹性余量保证测量的准确性。设计了较小的探头对地电容，从而获得良好的高频响应。采用OrCAD/Pspice开展电路模拟，结果显示设计的探头满足信噪比和前沿响应要求。采用CST开展静电场模拟，结果显示设计的D-dot探头可以满足1 MV传输线电压下的绝缘要求。标定和实验结果表明该探头可以响应前沿为几十ns的信号，能够满足测量需要。
- 脉冲高压 /
- 一体化D-dot探头 /
- 脉冲传输线 /
- 标定
Abstract: An integrative D-dot monitor is designed to measure high voltage pulse in transmission line. The monitor which consists of base, airproof BNC connector, probe shell, insulation, probe and connecting rod is located on the outshell of transmission line. Monitor assemblies are coaxially connected by thread, resulting in compaction of configuration and integrality in dismounting or mounting. An airproof BNC connector and a seal packing ring of oxygen-free copper are used to get good sealing performance and veracity, meanwhile their low elasticity leads to high accuracy of measurement. Low ground capacitance of monitor is designed to get good high-frequency response. Simulation by OrCAD/Pspice is taken, with good signal-to-noise ratio and rising time. Results of simulation on electrostatic field by CST show that the monitor is safe to measure 1 MV high voltage. Results of calibration and experiment show that the integrative D-dot monitor can response to signals with rise time of several tens of nanoseconds, which could fulfill our diagnostic requirement.
- high voltage pulse /
- integrative D-dot monitor /
- pulse transmission line /
- calibration

HTML全文

图 1 一体化D-dot探测器线路图

Figure 1. Schematic of integrative D-dot monitor

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图 2 一体化D-dot探测器结构图

Figure 2. Diagram of structure of integrative D-dot monitor

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图 3 一体化D-dot探头等效电路及模拟输出结果

Figure 3. Equivalent circuit and simulation output of integrative D-dot monitor

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图 4 探头位置的静电场强度分布

Figure 4. Distribution of electrostatic field intensity at monitor

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图 5 标定时D-dot和高压探头的输出波形

Figure 5. Calibration signals of D-dot and high voltage probe

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图 6 Marx型脉冲功率源中一体化D-dot探头测量波形

Figure 6. Output of integrative D-dot monitor in Marx pulse power source

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参考文献(10)

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