光伏支架系统雷电暂态研究  

LIGHTNING TRANSIENT RESEARCH OF PHOTOVOLTAIC SUPPORTING STRUCTURE

作　　者：王耀武 张小青[1] 陶世祺 陈士刚 孟庆阳 Wang Yaowu, Zhang Xiaoqing, Tao Shiqi, Chen Shigang, Meng Qingyang(School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China)

机构地区：[1]北京交通大学电气工程学院

出　　处：《太阳能学报》2018年第10期2788-2796,共9页Acta Energiae Solaris Sinica

基　　金：国家自然科学基金(51777007)

摘　　要：针对直接雷击时光伏支架系统雷电暂态计算问题，提出支架系统中分支导体与接地装置中接地体不同的电路参数计算方法，建立包含光伏支架系统和接地装置在内的整体雷电暂态电路模型。并以该模型为基础，仿真计算不同雷击位置及不同结构地网条件下光伏支架系统上雷电暂态响应，得出支架系统中雷电流与暂态电位的分布特性。计算结果表明，雷击点位置、地网结构和光伏支架结构均对光伏支架上雷电流和暂态电位分布具有较大影响。雷电流在光伏支架系统中的分布与雷击点位置呈现出近强远弱的分布特性，同时暂态电位在雷击发生后由畸形分布逐渐趋于均衡。In order to perform the lightning transient analysis of PV framework, this paper proposes a efficient method for calculating the electrical parameters of framework branches and grounding materials. By integrating the supporting frameworks and grounding arrangements, an equivalent circuit model is built for lightning transient simulation. The lightning transient responses in the supporting framework systems are obtained for different striking points and structures of grounding arrangements that based on the circuit model. The simulated results reveal that the positions of striking points and structures of supporting frameworks and grounding arrangements have pronounced influences on the transient responses. The lightning currents on the branch conductors close to the striking point are significantly higher than the farthers. Meanwhile, the transient potential distribution on supporting framework has an initial distortion and then tends to approximate equalization.

关 键 词：暂态响应 仿真模型 雷击 光伏支架 电路计算 

分 类 号：TM863[电气工程—高电压与绝缘技术]