低海拔地区长空气间隙放电特性试验研究  

Experimental Research of Long Air-Gap Discharge Characteristics in Low Altitude Area

作　　者：许飞[1] 黄志都[1] 李恒灿[1] 廖永力 刘磊 高超 

机构地区：[1]广西电网公司电力科学研究院,南宁530023 [2]南方电网科学研究院,广州510080

出　　处：《南方电网技术》2011年第3期41-44,82,共5页Southern Power System Technology

基　　金：中国南方电网有限责任公司科技项目(K0906)~~

摘　　要：为进一步完善特高压线路的外绝缘设计,在南宁进行了棒-板长空气间隙的直流、雷电和操作冲击电压的放电试验,发现正极性的棒-板间隙放电电压比负极性的要低很多。应用相关标准对试验数据进行大气校正,并与海拔高度与南宁接近的北京中国电科院高压基地的棒-板间隙放电数据进行对比,结果显示:IEC 60060-1、DL/T 620—1997标准以及IEC 60060-1推荐校正方法适用于平原地区正极性放电试验的校正,DL/T 620—1997中的校正方法主要适用于对工频放电电压以及正极性冲击放电电压。In order to improve the external insulation design of UHV transmission lines,the discharge experiments of rod-plate long air gap under DC voltage,lightning impulse voltage and operating impulse voltage are carried out in Nanning,and it proves that the discharge voltage of rod-plate air gap with positive polarity is much lower than that with negative polarity.The experimental data are corrected with related standards,and then the results are compared with the data of rod-plate discharge in China Electric Power Research Institute in Beijing,which is in almost the same altitude as Nanning,showing that the correction methods recommended by IEC 60060-1,DL/T 620—1997 and IEC 60060-1 are good for the positive discharge test in plain and that by DL/T 620—1997 are mainly for power frequency discharge voltage and positive impulse discharge voltage.

关 键 词：长空气间隙 击穿特性 大气校正 

分 类 号：TM863[电气工程—高电压与绝缘技术]