Currently,there is no practical method to judge the conductivity of tension clamps of overhead line,and it is difficult to take necessary in-process control measures on the lap joint and overheating elimination of tension clamps.By analyzing the problems in practical application of resistance test judgment method,this paper proposes a segmented resistance discrimination method for the tension clamp conductivity of overhead line.Through the criterion of local conductivity and local resistance consistency,the method realizes the practical judgment of transmission line conductivity.The application practice in Jiangsu power grid shows that compared with the DC resistance test judgment method,the segmented resistance discrimination method can identify the tension clamp conductivity more effectively.The proposed criteria provide a new technical means for judging the working quality of tension-resistant clamp lap joint and eliminating overheating fault of clamps.
关键词
导通性/耐张线夹/分段电阻判别法/判据/架空线路/输电线路
Key words
conductivity/tension clamp/segmented resistance discrimination method/criterion/overhead line/transmission line
维普
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