山东电力技术2017，Vol.44Issue(11)：5-10,6.
一种计算输电线路上行连接先导速度的新方法
A Novel Approach for Calculating the Velocity of Lightning Upward Connecting Leader Initiated from Transmission Lines
师伟 1郑建 1任敬国 1李杰 1王斌1
作者信息
- 1. 国网山东省电力公司电力科学研究院,山东 济南 250003
- 折叠
摘要
Abstract
The evaluation of lightning shielding characteristic of transmission lines plays an important role in power transmission system design.Since the development process of upward connecting leader initiated from the transmission line has a great influence on the interception of lightning downward leader,it is necessary to study the upward connecting leader characteristics,and the proper description of the upward connecting leader velocity is beneficial for improving the accuracy of lightning shielding analysis.Based on the leader discharge theory,a method to calculate the charge per unit length necessary to achieve the transition from the streamer corona to a new leader segment is suggested,and then a formula to analyze the velocity of lightning upward connecting leader is proposed by combining with the experimental data of triggered lightning.The simulation results of upward connecting leader velocity based on the proposed model agree well with the observation data of the natural lightning interaction with a high tower,which shows the validity of this model.Moreover,the proposed model is compared with the existing leader velocity models,and the obtained upward connecting leader length is within the range of simulation results by the traditional models.关键词
上行连接先导/先导速度/先导放电/输电线路/雷击Key words
upward connecting leader/leader velocity/leader discharge/transmission line/lightning stroke分类
信息技术与安全科学引用本文复制引用
师伟,郑建,任敬国,李杰,王斌..一种计算输电线路上行连接先导速度的新方法[J].山东电力技术,2017,44(11):5-10,6.
