海上风机塔筒的非均匀传输线模型  

Non-uniform Transmission Line Model of Offshore Wind Turbine Tower

作　　者：宋远见 徐政[1] 余敬秋 张哲任[1] SONG Yuanjian;XU Zheng;YU Jingqiu;ZHANG Zheren(College of Electrical Engineering,Zhejiang University,Hangzhou 310027,China)

机构地区：[1]浙江大学电气工程学院,浙江杭州310027

出　　处：《中国电力》2020年第7期92-99,216,共9页Electric Power

基　　金：国家电网公司科技项目(SGJSJY00GHJS1900028)。

摘　　要：风机塔筒的建模是海上风电机组防雷保护研究的重要组成部分,其模型的建立对分析结果有重要影响。首先分析塔筒多波阻抗模型在海上风机防雷研究中的不适用性;其次建立塔筒的非均匀传输线模型;然后,利用多波阻抗模型研究塔筒空间结构变化对自身电磁暂态特性的影响。研究结果表明:塔筒分段越多,其电磁暂态响应越准确。通过对采用非均匀传输线模型和采用多波阻抗模型的塔筒雷电暂态响应进行对比,证明了非均匀传输线模型更符合实际情况,从而给出了塔筒的推荐分段数。The modeling of wind turbine tower is an important part of the research on lightning protection of offshore wind turbines.The establishment of its model has an important impact on the analysis results. This paper first analyzes the inapplicability of the tower multi-surge impedance model in the research of lightning protection for offshore wind turbines, and then establishes a nonuniform transmission line model of tower. Secondly, the influence of the spatial structure change of the tower on its own electromagnetic transient characteristics was studied by using the multi-surge impedance model. The results show that the more the tower is divided into sections, the more accurate its electromagnetic transient response is. Finally, a comparative analysis of the lightning transient response of the tower using the non-uniform transmission line model and the multi-surge impedance model is performed, which proves that the non-uniform transmission line model is more in line with actual conditions.

关 键 词：海上风机 多波阻抗模型 非均匀传输线模型 防雷保护 电磁暂态响应 

分 类 号：TM614[电气工程—电力系统及自动化]