淋雨条件下瓦型导线的电晕特性  

Study on Corona Characteristics of Tile-type Conductor in Rainfall Environment

作　　者：胡琴[1] 伍炜卫 彭华东 李永福 杨航 HU Qin;WU Weiwei;PENG Huadong;LI Yongfu;YANG Hang(State Key Laboratory of Power Transmission Equipment&System Security and New Technology(Chongqing University),Shapingba District,Chongqing 400044,China;Shenzhen Power Supply Branch,China Southern Power Grid,Shenzhen 518001,Guangdong Province,China;State Grid Chongqing Electric Power Research Institution,Yubei District,Chongqing 401123,China)

机构地区：[1]输配电装备及系统安全与新技术国家重点实验室(重庆大学),重庆市沙坪坝区400044 [2]南方电网深圳供电局,广东省深圳市518001 [3]国网重庆市电力公司电力科学研究院,重庆市渝北区401123

出　　处：《电网技术》2019年第9期3447-3452,共6页Power System Technology

基　　金：国网重庆市电力公司科技项目(SGCQDK00PJJS16000-49);国家自然科学基金项目(51320163)~~

摘　　要：为研究淋雨条件下瓦型导线的电晕特性,在人工气候室中对单根瓦型导线JRLX/T-310/40和钢芯铝绞线LGJ-300/40进行干燥和不同程度淋雨条件下的电晕实验,利用紫外成像仪和声级计观察电晕放电情况。结果表明,在同等电场强度的条件下,瓦型导线在淋雨条件下的电晕损失和可听噪声值明显高于干燥条件,且随着雨量的增大,电晕损失和可听噪声值增加,起晕电压明显下降;同等条件下,瓦型导线的电晕损失和可听噪声值都明显低于钢芯铝绞线,表明瓦型导线能较好改善导线的电晕特性。To study corona characteristics of T-type conductors under rain conditions,this paper built a corona cage in artificial climate chamber,using ultraviolet imager and sound level meter to observe corona discharge of JRLX/T-310/40(T-type conductor)and LGJ-300/40(steel core aluminum wire)under dry environment and environments of different rainfall densities.Experimental results show that,under the same electric field intensity,corona loss and audible noise value of T-type wire in rain environment are significantly higher than those in dry environment.With increase of rainfall density,corona loss and audible noise value increase,and corona inception voltage decreases obviously.Under the same conditions,the corona loss and audible noise value of T-type conductors are obviously lower than those of steel core aluminum stranded wires,indicating that T-type conductors can improve corona characteristics remarkably.

关 键 词：瓦型导线 电晕特性 淋雨 电晕笼 钢芯铝绞线 

分 类 号：TM85[电气工程—高电压与绝缘技术]