An improved model to determine the inception of positive upward leader-streamer system considering the leader propagation during dark period

作者：Xie, Shijun^*; He, Junjia; Chen, Weijiang

来源：Physics of Plasmas, 2013, 20(4): 042107.

DOI：10.1063/1.4801031

Stem-leader transition and front-streamer inception are two essential conditions for the inception of positive upward leader-streamer system (LSS). Previous models have not considered the initial-leader propagation during dark period and have not been verified systematically. In this paper, a series of positive upward discharge simulation experiments was designed and carried out. Characteristic parameters of the discharge process related to the inception of positive upward LSS, namely, the first-corona inception voltage, the first-corona charge, the dark period, and the LSS inception voltage, were obtained. By comparing these experiment results with simulation results calculated using previous models, it was found that it is improper to assume that the length of the initial leader is a fixed value. Finally, an improved inception model of positive upward LSS considering the leader propagation during dark period was developed and verified with experiment results.

• 出版日期2013-4
• 单位强电磁工程与新技术国家重点实验室; 华中科技大学; 国网电力科学研究院