摘要
以安徽碧山117线10 kV配电线路为研究对象,在给定线路参数和环境参数的情况下,建立配电线路直击雷跳闸率和感应跳闸率的计算模型,并计算了雷击跳闸率,利用运行统计数据进行了结果验证,证明了所建模型的准确性。同时,对比研究了10 kV雷击跳闸率的影响因素。结果表明,绝缘U50%越高,雷击跳闸率越低;线路平均高度越高,雷击跳闸率越高;平均雷暴日增加,雷击跳闸率上升;土壤电阻率增加,雷击跳闸率上升,但变化幅度不大。
In the paper,the 10 kV distribution line of Bishan 117 line in Anhui Province is taken as the research object.In the case of given parameters and environmental parameters,the calculation model of the lightning trip-out rate and the induction trip-out rate of the distribution lines is established.In addition,the lightning trip-out rate is calculated and the results are verified by the operation statistics,which proves the accuracy of the model.Besides,the influencing factors of 10 kV lightning trip-out rate are compared.The results show that：the higher U50% of the insulator,the lower the lightning trip-out rate.The higher the average height of the line,the higher the lightning trip-out rate.As the average thunderstorms increases,the lightning trip-out rate increases.With the increase of soil resistivity,lightning trip-out rate increases;however,the change is not significant.
出处
《重庆科技学院学报（自然科学版）》
CAS
2017年第5期84-87,共4页
Journal of Chongqing University of Science and Technology：Natural Sciences Edition
基金
中央高校基本科研业务费项目"电力电缆接头状态非接触式检测原理及方法研究"(CDJXY150008)
关键词
10
KV配电线路
雷击跳闸
直击雷
感应雷
影响因素
10 kV distribution lines
lightning trip-out
direct lightning
induced lightning
influencing factors
