D－dot 电容分压器线性度测试方法

摘要

In order to solving the the D-dot capacitive voltage divider calibration in different voltage , especially ,solving the problem which the voltage ratio is calibrationed under low voltage but used on high voltage in pulse power devices , this test method is designed .Based on D-dot capacitive voltage divider and RC integrator voltage test system principle ,using PSPice simulation software to establish the impact equivalent circuit model of ray waves , at the same time , takes the standard capacitive voltage divider as standard equipment below 100 kV voltage .The method is proved effective and can solve under 100 kV voltage ratio linearity test questions through experimental results .%为解决脉冲功率装置中D－dot电容分压器在低电压下校准高电压下使用，不可避免地产生分压比线性度问题，提出此测试方法。基于D－dot电容分压器和RC积分器电压测试系统的分压原理，利用PSPice仿真软件建立冲击高压下的等效电路模型，将冲击高压试验装置中经过上级溯源的标准电容分压器作为100 kV以下D－dot线性度和分压比的量传标准。实验结果证明：该方法准确有效，能够解决100 kV以下D－dot 分压器分压比线性度的测试问题。