中国电机工程学报2016，Vol.36Issue(21)：5983-5989,7.DOI:10.13334/j.0258-8013.pcsee.152489
正极性操作冲击下棒-棒间隙先导发展试验与仿真研究
Experimental and Simulation Study on the Leader Development in Rod-rod Air Gaps Under Positive Switching Impulse Voltage
谢耀恒 1刘赟 1叶会生 1贺恒鑫 2何俊佳2
作者信息
- 1. 国网湖南省电力公司电力科学研究院，湖南省长沙市 410007
- 2. 华中科技大学电气与电子工程学院，湖北省武汉市 430074
- 折叠
摘要
Abstract
The main form of electrical discharge in long air rod-rod gaps is broken down by leader mechanism. The leader development in rod-rod gaps under positive switching impulse was investigated by using two high-speed CMOS cameras. The clearer and more particular colorized physical morphology of the leader propagation process than the traditional image converter cameras was recorded and the leader development parameters were also obtained. As a comparative study, an improved simplified model for the rod-rod configuration was performed to simulate the leader development. The numerical simulations of leader development characteristics were in a close agreement with that of experimental measurements. From the experimental measurements and simulated results, it is obtained that the negative upward leader is incepted at the beginning of the final jump stage and develops to the positive downward leader. Moreover, the propagation velocities of both leaders are almost equal and keep gradually increase with the decrease of the distance of the rest gap. The length of the negative upward leader is almost half of the final jump distance.关键词
正极性放电/操作冲击/先导发展/棒-棒间隙/仿真Key words
positive discharge/switching impulse/leader development/rod-rod air gap/simulation分类
信息技术与安全科学引用本文复制引用
谢耀恒,刘赟,叶会生,贺恒鑫,何俊佳..正极性操作冲击下棒-棒间隙先导发展试验与仿真研究[J].中国电机工程学报,2016,36(21):5983-5989,7.
