高压电器2012，Vol.48Issue(9)：56-62,7.
特高压冲击电压测量系统线性度试验方法研究
Experimental Methods Research on Linearity of UHV Impulse Voltage Measuring Systems
龙兆芝 1章述汉 1刘少波 1李文婷 1肖凯 1李智成1
作者信息
- 1. 中国电力科学研究院计量研究所,武汉430074
- 折叠
摘要
Abstract
With the continuous development of UHV transmission technology, the rated voltage of impulse voltage measuring system has risen up to 7 000 kV for satisfying the withstand test requirements of electric devices. Based on the situation, the linearity measurement of impulse voltage measuring system above 1 000 kV is a problem needed to be resolved urgently since the calibrating voltage is below 1 000 kV which can't be well positioned to meet the actual experimental requirements. The paper analyzes two existing calibration methods which are direct comparison calibration and capacitance measurement of dividers, and provides a testing plan to compare calibration when the voltage below 1 000 kV and to compare each level by increasing the voltage step by step when the voltage between 1 000 kV and 5 000 kV with measuring changes in generator efficiency as a proof. In theory, the plan can basically satisfies the engineering tests of 7 500 kV impulse voltage measuring system with the voltage is 1 000 kV to 5 000 kV. If the test results are satisfactory, a transfer standard can be built by the method in paper to compare all UHV impulse measuring systems in nation. The paper also introduces some other methods of measuring linearity such as sphere gap, standard capacitor, space charge, and field sensor. By discussing the methods' respective advantages and disadvantages, they need further experimental verifications for practical application.关键词
线性度/弱阻尼电容分压器/冲击发生器/冲击电压测量系统/效率变化/逐级比对/杂散参数/电晕Key words
linearity/ lightly-damped capacitive divider/ impulse voltage generator/ impulse voltage measuring system/ efficiency changes/ step comparison measurement/ stray parameter/ corona分类
信息技术与安全科学引用本文复制引用
龙兆芝,章述汉,刘少波,李文婷,肖凯,李智成..特高压冲击电压测量系统线性度试验方法研究[J].高压电器,2012,48(9):56-62,7.
