特高压人工交流污秽试验电源关键参数的选型计算分析

摘要

This paper puts forward the key parameters calculation method of AC contamination test power supply,and analyzes the influence of key parameters on AC contamination test of UHV and below voltage products. The calculation results show that different resistances of protective resistor are selected in order to obtain the ideal test results for AC contamination test of different voltage levels; withstanding short circuit capacity of the test transformer is at least 9 times of its rated current for the UHV AC contamination experiment, and it is at least 6 times of its rated current for the EHV and below voltage contamination experiment.%提出交流污秽试验电源关键参数的计算方法，分析各关键参数对特高压及以下电压等级被试品进行交流污秽试验的影响。计算结果表明：对不同电压等级的被试品进行交流污秽试验时，为获得理想的试验结果，应选用不同阻值的保护电阻；进行特高压被试品的交流污秽试验时，污秽试验变压器的抗短路能力至少为其额定电流的9倍；进行超高压及以下电压等级的被试品的交流污秽试验时，污秽试验变压器的抗短路能力至少为其额定电流的6倍。