Journal of Shanghai Jiao Tong University ›› 2020, Vol. 54 ›› Issue (12): 1244-1251.doi: 10.16183/j.cnki.jsjtu.2019.163

Previous Articles     Next Articles

Simulation of PD Optical Signal Mechanism Based on FCT Algorithm

ZHANG Yue1, QIAN Yong1(), LIU Wei2, ZANG Yiming1, SHENG Gehao1, JIANG Xiuchen1   

  1. 1.Department of Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
    2.Key Laboratory for Sulfur Hexafluoride Gas Analysis and Purification of SGCC, Anhui Electric Power Research Institute of SGCC, Hefei 230022, China
  • Received:2019-06-10 Online:2020-12-01 Published:2020-12-31
  • Contact: QIAN Yong E-mail:qian_yong@sjtu.edu.cn

Abstract:

The flux-corrected transport (FCT) algorithm is used to simulate the two-dimensional planar needle-plate structure of the positive streamer model and the partial discharge process of tip defects. The variations in electron density, net charge density and electric field during the movement of the positive streamer are obtained. By deducing the relationship between photon flux and photoionization term, the photon distribution function is analyzed, and the variation law of the photon flux (the number density of photons generated per second) of the streamer moving in the air is obtained. The results show that the maximum luminous point concentrates on the fast-moving head of the positive streamer in the air. The photon flux (the number of photons produced per second) is approximately exponential with the distance from the cathode, with a maximum of approximately 1.4×1028 s-1·m-3.

Key words: partial discharge, photon flux, flux-corrected transport (FCT) algorithm, simulation

CLC Number: