低气压下棒——板间隙交流放电特性研究及电压校正  

AC Discharge Performance and Voltage Correction of Rod-plane Gap Under Low Air Pressure

作　　者：李熙 夏喻[2] 陈艳[2] LI Xi;XIA Yu;CHEN Yan(SPIC Information & Technology Co.,Ltd.,Beijing 100070,China;School of Electrical and Electronic Engineering,North China Electric Power University,Beijing 102206,China)

机构地区：[1]国家电投信息技术有限公司,北京100070 [2]华北电力大学电气与电子工程学院,北京102206

出　　处：《高压电器》2019年第6期93-98,104,共7页High Voltage Apparatus

摘　　要：为研究低气压条件下棒-板空气间隙放电特性,利用低气压放电试验平台针对100~600 mm棒-板空气间隙在交流电压下的放电电压U50与气压P、间隙距离d的关系进行了试验,分析了2~60 kPa气压范围内P与d对U50的影响,得到了U50与P,d之间的关系曲线并提出了2~60 kPa气压范围内的放电电压校正公式。研究结果表明:在2~60 kPa气压范围内不同棒-板间隙的U50-P曲线均存在明显饱和区,随间隙距离减小饱和区向高气压方向移动,根据试验数据所得放电电压校正公式具有较高的精确度。该研究结果可为低气压下棒-板间隙放电特性研究以及更系统的开展低气压下长间隙特性试验提供参考。For the purpose of obtaining rod-plane air gap discharge performance under high altitude and low pressure conditions,laboratory investigations of the relationship between 50%AC discharge voltage U50,air pressure P and air gap distance d are carried out in the low pressure test platform for 100~600 mm rod-plane gaps.The effects of P and d on U50 are analyzed in the range of 2 to 60 kPa.The relationship between U50,P and d are obtained,furthermore,put forward voltage correction formulas of AC discharge within 2~60 kPa.The results show that,U50-P curves of different gaps within 2~60 kPa all have obvious saturation trends.As gap length decreases,the saturation region moves toward low pressure direction,and the U50 correction formula based on the experimental data has a high accuracy.The results can provide reference for the study of the discharge characteristics of rod,plane air gap at high altitude and low pressure conditions,and the systemic discharge tests for rod,plane air gaps.

关 键 词：低气压 棒-板间隙 交流电压 放电特性 电压校正 

分 类 号：TM85[电气工程—高电压与绝缘技术]