张悦¹, 钱勇¹(), 刘伟², 臧奕茗¹, 盛戈皞¹, 江秀臣¹

^1.上海交通大学　电气工程系，上海 　200240
^2.国网安徽省电力有限公司电力科学研究院，六氟化硫气体特性分析与净化处理技术国网公司重点实验室，合肥 　230022

收稿日期:2019-06-10出版日期:2020-12-01发布日期:2020-12-31
通讯作者:钱勇E-mail:qian_yong@sjtu.edu.cn
作者简介:张悦(1995-)，女，硕士生，河北省石家庄市人，主要研究方向为输变电设备状态监测与智能化．
基金资助:国家重点研发计划(2017YFB0902500);国家电网有限公司总部科技项目（环保型管道输电关键技术）资助

Simulation of PD Optical Signal Mechanism Based on FCT Algorithm

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

^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:2019-06-10Online:2020-12-01Published:2020-12-31
Contact:QIAN Yong E-mail:qian_yong@sjtu.edu.cn

摘要/Abstract

摘要： 采用通量校正传输 (FCT)算法对二维平面针板结构的正流注模型进行仿真，模拟尖端缺陷局部放电过程，得到正流注移动过程中电子密度分布、净电荷密度分布及电场的变化规律．通过推导光子通量与光电离项的关系，分析光子分布函数，得到流注在空气中运动时光子通量(每秒钟产生的光子数密度)的变化规律．结果表明：空气中正流注的发光位置往往集中在快速移动的流注头部，光子通量的大小与该位置到阴极的距离近似呈指数关系，最大值约为1.4×10²⁸ s^－1·m^－3.
关键词: 局部放电, 光子通量, 通量校正传输算法, 仿真
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


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