中国电机工程学报2017，Vol.37Issue(7)：2151-2158,8.DOI:10.13334/j.0258-8013.pcsee.160885
叶片转动对风机引雷能力影响的模拟试验研究
Experimental Study of the Influence of the Blade Rotation on Triggered Lightning Ability of Wind Turbine's Blades
摘要
Abstract
Compared with other lightning targets on ground, the most notable feature of wind turbine is that its blades are generally in rotating state during lightning strike. In order to study the specialty and mechanism of the influence of blade rotation on triggered lightning ability, the paper conducted some lightning discharge comparison tests under different status (stationary and rotating blades) on typical 2MW wind turbines' 1:30 miniature. In these tests, a negative polarity 250/2500μs standard operating wave on the high voltage electrode was applied and the up-and-down method was adopted for 50% discharge voltage. The discharge process was observed, and the experimental results show that under the condition of 1m and 1.3m gaps, the breakdown voltage would get higher and the location of the leader connection point would get closer to blade tips with increasing speed, which means that blade rotation reduces triggering lightning ability. Through the analysis of lightning discharge process, it is found that the rotation of the blades changes the charge distribution on blade tip region, thus weakening the upward leader development on the blade tip, which affects the discharge development process. This result provides a reference for lightning protection of wind turbines.关键词
风力发电机/叶片/旋转/缩比试验/升降法Key words
wind turbine/blade/rotation/scaling test/up-and-down method分类
信息技术与安全科学引用本文复制引用
文习山,屈路,王羽,姒天军,徐剑伟,蓝磊..叶片转动对风机引雷能力影响的模拟试验研究[J].中国电机工程学报,2017,37(7):2151-2158,8.基金项目
国家电网公司 2015 年总部科技项目(SGTYHT/ 14-JS-188). China State Grid Corp headquarters project in 2015 (SGTYHT/ 14-JS-188). （SGTYHT/ 14-JS-188）
