Development of High Performance Measuring Systems for Steep Impulse Voltages and Currents

本研究旨在开发高性能的测量系统，特别是分频器，通过在低压臂中使用电阻率小于高压臂的电阻率的电解质，或者通过使用诸如金属或碳电阻器的普通电阻器作为低压臂，已经开发出具有优异响应特性的电解质分压器。研制了一种混合分压器，其高压臂由蒸馏水包围的金属电阻组成。在这种分压器中，电压比对于温度的变化保持恒定值，因为它由金属电阻器决定，并利用周围蒸馏水的高介电常数获得良好的响应特性。3.通过使用补偿电路作为低压臂，分压器的响应特性得到了显著改善。这种方法已应用于电解质，混合和阻尼电容分压器和有效性已被实验证实。4分压器的响应特性没有一个高压引线进行了研究。结果表明，响应特性优于具有高压引线的分压器。5通过应用EMTP（电磁瞬态程序），作者能够计算包括高压引线在内的各种分压器的响应特性。计算的响应特性与实测结果吻合较好。

This research aimed at the development of high performance measuring systems, especially dividers, for steep impulse voltages and the following results have been obtained.1 Electrolyte dividers with excellent response characteristics have been developed by using electrolyte with smaller resistivity in the low voltage arm than that of the high voltage arm or by using an ordinary resistor such as metallic or carbon resistors as the low voltage arm.2 A hybrid divider with the high voltage arm of a metallic resistor surrounded with distilled water has been developed. In this divider, the voltage ratio is kept at a constant value for variations of temperature as it is determined by the metallic resistor and excellent response characteristics are obtained by utilizing the high dielectric constant of the surrounding distilled water.3 The response characteristics of dividers have been remarkably improved by using a compensating circuit as the low voltage arm. This method has been applied to electrolyte, hybrid and damped capacitive dividers and the effectiveness has been confirmed experimentally.4 The response characteristics of dividers without a high voltage lead have been investigated. The result has shown that the response characteristics are better than those of the dividers with a high voltage lead.5 By applying EMTP(Electromagnetic Transient Program), the authors have enabled to calculate the response characteristics of various dividers including the high voltage lead. The calculated response characteristics are agree well with measured results.