Wind energy generation systems - Part 21-1: Measurement and assessment of electrical characteristics - Wind turbines (IEC 61400-21-1:2019); German version EN IEC 61400-21-1:2019
风能发电系统.第21-1部分:电气特性的测量和评估.风力涡轮机(IEC 61400-21-1-2019);德国版本EN IEC 61400-21-1:2019