基于等效电容的高压输变电工程工频电场测量误差分析及改善措施研究

发布时间：2018-04-21 04:21

本文选题：输变电工程 + 工频电场测量　；参考：《中国测试》2017年10期

【摘要】：为研究环境湿度造成高压输变电工程工频电场测量系统产生较大误差的机理,降低在高湿度环境下(相对湿度50%)测量系统的误差,该文通过分析测量等效电路结合现场实测数据的方法,研究测量系统介入前后等效电路的变化与实测结果的关系。发现在高湿度环境下工频电场测量系统介入后,传感器支架等效电容的改变是导致该电场测量误差的主要原因。工频电场的测量结果与传感器支架等效电容成正比,并实验验证了可以通过改善支架电性能的方法提高测试系统的准确性。该研究对高湿度环境下现有输变电工程工频电场强度测量方法的改进和推进相关标准的制定和修订具有参考意义。
[Abstract]:In order to study the mechanism of large error caused by environmental humidity in power frequency electric field measurement system of high voltage transmission and transformation engineering, and to reduce the error of measuring system in high humidity environment (relative humidity 50), In this paper, the relationship between the change of the equivalent circuit before and after the intervention of the measurement system and the measured results is studied by analyzing the measurement equivalent circuit combined with the field measured data. It is found that the change of the equivalent capacitance of the sensor bracket is the main cause of the error of the electric field measurement after the interference of the power frequency electric field measurement system in the high humidity environment. The measurement results of the power frequency electric field are proportional to the equivalent capacitance of the sensor bracket, and the experimental results show that the accuracy of the test system can be improved by improving the electrical performance of the support. This study is of reference significance to the improvement of power frequency electric field intensity measurement method and to the establishment and revision of related standards in high humidity environment.
【作者单位】：国网四川省电力公司电力科学研究院;中国测试技术研究院;
【分类号】：TM72;TM937

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