叶片转动对风机引雷能力影响的模拟试验研究 - 中国电机工程学报.pdf

第 37 卷 第 7 期 中 国 电 机 工 程 学 报 Vol.37 No.7 Apr. 5, 2017 2017 年 4 月 5 日 Proceedings of the CSEE ©2017 Chin.Soc.for Elec.Eng. 2151 DOI ：10.13334/j.0258-8013.pcsee.160885 文章编号：0258-8013 (2017) 07-2151-08 中图分类号：TM 865 叶片转动对风机引雷能力影响的模拟试验研究 文习山，屈路，王羽，姒天军，徐剑伟，蓝磊 (武汉大学电气工程学院，湖北省 武汉市 430072) Experimental Study of the Influence of the Blade Rotation on Triggered Lightning Ability of Wind Turbine’s Blades WEN Xishan, QU Lu, WANG Yu, SI Tianjun, XU Jianwei, LAN Lei (School of Electrical Engineering, Wuhan University, Wuhan 430072, Hubei Province, China) ABSTRACT: Compared with other lightning targets on 验。采用升降法获取 50%放电电压，并进行放电过程观测， ground, the most notable feature of wind turbine is that its 结果表明：在 1 和 1.3m 间隙条件下，击穿电压随着叶片转 blades are generally in rotating state during lightning strike. In 速的提升而提升，先导连接位置随着转速的提升更加接近叶 order to study the specialty and mechanism of the influence of 尖，叶片转动导致风机的引雷能力降低。分析认为叶片的旋 blade rotation on triggered lightning ability, the paper 转改变了叶尖区域的电荷分布，使叶尖上行先导发展不充 conducted some lightning discharge comparison tests under 分，从而影响了放电发展过程。所得结果可为风电机组的防 different status (stationary and rotating blades) on typical 2MW 雷保护提供参考借鉴。 wind turbines’ 1:30 miniature. In these tests, a negative polarity 关键词：风力发电机；叶片；旋转；缩比试验；升降法 250/2500μs standard operating wave on the high voltage electrode was applied and the up-and-down method was 0 引言 adopted for 50% discharge voltage. The discharge process was 随着新能源技术的发展，风电机组容量逐渐增 observed, and the experimental results show that under the 加，风机尺寸不断增大，现有叶片尺寸最大已超过 condition of 1m and 1.3m gaps, the breakdown voltage would 80m，风