Research on Ultra-Wide-Band High Voltage Measuring System Utilizing Electric Field Sensing

利用电场传感的超宽带高压测量系统研究

• 批准号: 05452175
• 负责人: ISHII Masaru
• 金额: $ 4.35万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (B)
• 财政年份: 1993
• 资助国家: 日本
• 起止时间: 1993 至 1994
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-05452175/
• 关键词: Measurement; High Voltage; Voltage Divider; Lightning Impulse

The divider ratio and the response characteristics of the high voltage impulse measuring system, which incorporates the ultra-wide-band high voltage divider designed and manufactured in the previous fiscal year, have been measured experimentally. In general, it is difficult to precisely know the divider ratio by measuring the impedance of individual parts of a high voltage divider at a low frequency. It will be possible to determine the divider ratio without performing the comparison test through the accurate three-dimensional electrostatic field analysis and the measurement of the impedance of the low voltage arm. This time, the divider ratio was determined by the comparison measurement with a low impedance divider.The measured step response of the system with the damping resistor of 200 Ohms achieved 5.5ns of the response time, and 75ns of the settling time. These numbers are comparable to those of the best high voltage dividers ever reported, and are not foreseen for dividers having … More high impedance. Thus it has been demonstrated that the developed high voltage measuring system has an ultra-wide-band characteristic. These numbers well clear the requirements for the fastest reference measuring system, demanded by the relevant IEC Standard totally revised in November 1994.The drawback of this type of a high voltage measuring system is that the divider ratio is susceptible to the distortion of surrounding electrostatic field due to the presence of other objects in the vicinity. This effect has been evaluated through a three-dimensional electrostatic field analysis and experiments. The accuracy of plus minus 0.5% is demanded for a reference measuring system according to the revised IEC Standard. As a result of the present study, the height of the lead wire connecting the high voltage divider and the impulse generator or the object under test is known to have little influence on the accuracy of the measurement. The manufactured 1MV-class high voltage measuring system kept its accuracy when the divider was more than 7m away from the impulse generator or the object under test, and was more than 4m apart from grounded objects or the walls of the laboratory. As these limitations can easily be overcome at a large high voltage laboratory, so the usefulness of the high voltage measuring system designed and manufactured in the present study has been confirmed. Less

采用上一财年设计制造的超宽带高压分压器，对高压冲击测量系统的分压比和响应特性进行了实验测量。一般情况下，通过测量高频高压分配器各部分的阻抗，很难准确地知道分压比。通过精确的三维静电场分析和低压臂阻抗的测量，可以在不进行对比试验的情况下确定分压比。通过与低阻抗分频器的对比测量，确定了分频比，采用200欧姆阻尼器的系统阶跃响应达到了5.5 ns的响应时间和75 ns的建立时间。这些数字与迄今报道过的最好的高压分配器的数字相当，并且没有预见到具有…的分配器更高的阻抗。实践证明，研制的高压测量系统具有超宽带特性。这些数字清楚地说明了1994年11月全面修订的相关IEC标准对最快参考测量系统的要求。这种类型的高压测量系统的缺点是，由于附近有其他物体的存在，分压比容易受到周围静电场的扭曲。通过三维静电场分析和实验对这一效应进行了评价。根据修订后的IEC标准，基准测量系统的精度要求为正负0.5%。本研究的结果是，连接高压分电器和脉冲发生器或被测物体的导线的高度对测量的准确性几乎没有影响。研制的1 MV级高压测量系统，在分压器与脉冲发生器或被测物体之间的距离超过7m时，与接地物体或实验室墙壁之间的距离超过4m时，仍能保持其测量精度。由于这些限制很容易在大型高压实验室中克服，因此本研究设计和制造的高压测量系统的实用性得到了证实。较少

项目成果

石井 勝: "100kV級雷インパルス電圧による分圧器の国内持ち回り比較試験21GC01:電気学会論文誌B" 114-B. 91-97 (1994)

Masaru Ishii：“使用100kV级雷电冲击电压21GC01的分压器的国内比较试验：日本电气工程师学会学报B”114-97（1994）。

石井勝: "100kV級雷インパルス電圧による分圧器の国内持ち回り比較試験" 電気学会論文誌B. 114-B. 91-97 (1994)

Masaru Ishii：“使用100kV级雷电冲击电压的分压器的国内比较试验”日本电气工程师学会会刊B.114-B（1994）。

Masaru Ishii: "100kV Class Intercomparison of Impulse Voltage Dividers in Japan" Trans.IEE of Japan. Vol.114-B. 91-97 (1994)

Masaru Ishii：《日本100kV级脉冲分压器的比较》Trans.IEE of Japan。