基于模拟电荷的上行先导起始模型研究及绕击特性分析  

Upward Pilot Inital Model Based on Simulated Charge and Analysis of Shielding Characteristics

作　　者：关鹏宇 于建立[1] 耿御缤 张毅[1] 鲁志伟[1] GUAN Pengyu;YU Jianli;GENG Yubin;ZHANG Yi;LU Zhiwei(Northeast Electric Power University,Ministry of Education Key Laboratory of Modern Power System Simulation and Control&Renewable Energy Technology,Jilin 132012,China)

机构地区：[1]东北电力大学现代电力系统仿真控制与绿色电能新技术教育部重点实验室,吉林吉林132012

出　　处：《智慧电力》2021年第4期95-100,共6页Smart Power

基　　金：国家自然科学基金资助项目(51907021);吉林市科技计划项目(2013324005)。

摘　　要：针对传统先导法对导线运行电压模拟与上行先导起始判断的不足,对上行先导起始判据进行改进,并建立先导发展模型。通过研究上行先导起始过程空间电场变化情况,得到了以平均场强为判据的改进上行先导起始模型,与Peek判据对比发现,传统先导模型夸大了雷云对先导的吸引能力。通过实例分析验证了所提模型的有效性,并应用所提模型分析输电线路绕击特性,提出雷电防护措施。Aiming at the shortcomings of the traditional pilot method in the simulation of wire operating voltage and the initial judgment of the upstream pilot,a pilot development model is estalbished.By studying the spatial electric field changes during the initial process of the upstream pilot,an improved upstream pilot initial model based on the average field strength is obtained.Compared with the Peek criterion,it is found that the traditional pilot model exaggerates the ability of thundercloud to attract the pilot.Case analysis verifies the validity of the model which is applied to analyze the shielding characteristics of transmission lines,and lightning protection measures are proposed.

关 键 词：500 kV 上行先导 输电线路 绕击 

分 类 号：TM247.1[一般工业技术—材料科学与工程]