摘要
以风力发电机组电能质量为研究对象,用四项最小旁瓣Nuttall窗对虚拟电网输出的模拟电压进行截断,通过FFT和HHT提取闪变、谐波、电压暂升的参数并从频域直接计算短时闪变严重程度。仿真实验结果表明:所研究算法可准确测量出风力发电机组引起的闪变、谐波、电压暂升的频率、幅值和发生时间,其测量结果精确。
Power quality of wind turbines was taken as the research object. Forth order minimum sidelobe Nuttall window is added on the analogue voltage which is the output of fictitious grid and the parameters of voltage flicker,harmonics,voltage swell are extracted by FFT and HHT and Short-term flicker severity is calculated directly from frequency spectrum. From the analysis of simulations,frequency and amplitude parameters of voltage flicker,harmonics,voltage swell and occurrence time are estimated accurately by using this approach.
作者
王旭
孟克其劳
张占强
宋丽丽
贾大江
宋为民
Wang Xu;Mengke Qilao;Zhang Zhanqiang;Song Lili;Jia Dajiang;Song Weimin(College of Information Engineering, Inner Mongolia University of Technology, Hohhot 010080, China;Shanghai Wind Power Stock Company Limited, Shanghai 200437, China;Inner Mongolia Autonomous Region Agricultural and Animal Husbandry Machinery Testing Station, Hohhot 010080, China)
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2019年第5期1387-1393,共7页
Acta Energiae Solaris Sinica
基金
国家自然科学基金(51467016)
内蒙古科技计划(20130303)
