导线雨凇覆冰及其直流电晕损失影响因素研究  

Research on the Influence Factors of Conductor Glaze Icing and Corresponding DC Corona Loss

作　　者：何高辉 胡琴[2] 喻建波 吴海涛 张琦 杨秀余 唐超[1] HE Gaohui;HU Qin;YU Jianbo;WU Haitao;ZHANG Qi;YANG Xiuyu;TANG Chao(College of Engineering and Technology(Southwest University),Beibei District,Chongqing 400715,China;State Key Laboratory of Power Transmission Equipment&System Security and New Technology(Chongqing University),Shapingba District,Chongqing 400044,China;Institute of Economics and Technology of State Grid Chongqing Electric Power Company,Yubei District,Chongqing 401123,China;State Grid Electric Power Research Institute of Chongqing Electric Power Company,Yubei District,Chongqing 401123,China;State Grid Chongqing Maintenance Company,Jiulongpo District,Chongqing 400039,China)

机构地区：[1]西南大学工程技术学院,重庆市北碚区400715 [2]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 [3]国网重庆市电力公司经济技术研究院,重庆市渝北区401123 [4]国网重庆市电力公司电力科学研究院,重庆市渝北区401123 [5]国网重庆市电力公司检修分公司,重庆市九龙坡区400039

出　　处：《中国电机工程学报》2021年第24期8610-8618,共9页Proceedings of the CSEE

基　　金：中央高校基本科研业务费专项资金资助(SWU120062);国家电网重庆市电力公司科研项目(SGCQJY00JJS190061,SGCQDK00SBJS1900103)。

摘　　要：为得到适用于我国电力设计实践的覆冰导线直流电晕损失数据,该文在实验室中搭建基于电晕笼的覆冰导线直流电晕效应试验平台。系统地研究覆冰时间、覆冰水电导率和覆冰电场强度对导线雨凇覆冰形态及其电晕损失的影响规律。研究表明:雨淞覆冰导线电晕损失与标称电场强度之间服从幂函数关系。覆冰时间越长、覆冰水电导率越高、覆冰电场强度越低,带电覆冰形成的雨淞覆冰导线的覆冰重量、覆冰厚度、冰凌长度及其电晕损失越大,相应的电晕起始电压和粗糙系数越小。改进的二次规律法可用于判定雨凇覆冰导线的电晕起始电压。雨淞覆冰导线的粗糙系数在0.172~0.300范围内。各影响因素中,覆冰水电导率的影响最大,覆冰电场强度的影响次之,覆冰时间的影响最小。To obtain the DC corona loss data of ice-covered conductor suitable for the electric power design practice in China,in this paper,a DC corona performance experiment platform of ice-covered conductor based on corona cage was constructed in laboratory.And the influence of icing duration,freezing water conductivity,and icing electric field intensity on the icing morphology of glaze ice-covered conductor and corresponding corona loss were studied systematically.Study shows that:the relationship between the corona loss and nominal electric field intensity of glaze ice-covered conductor is a power function.With longer icing duration,higher freezing water conductivity or lower icing electric field intensity,the icing weight,icing thickness,icicle length and corresponding corona loss formed in the energized glaze icing experiments are higher,while the corona onset voltage and surface state coefficient are lower.The improved quadratic law method is applicable for the determination of the corona onset voltage of the glaze ice-covered conductor.The surface state coefficient of the glaze ice-covered conductor is between 0.172 and 0.300.Among them,the influence of freezing water conductivity is the greatest,followed by icing electric field intensity,and the effect of icing duration is the smallest.

关 键 词：电晕损失 直流 覆冰水电导率 雨凇覆冰 覆冰时间 覆冰电场强度 

分 类 号：TM85[电气工程—高电压与绝缘技术]