南京大学学报(自然科学版) ›› 2016, Vol. 52 ›› Issue (2): 398.
• • 上一篇
胡克用1,2*,胥 芳1,艾青林1,徐红伟1,欧阳静1
Hu Keyong1,2*,Xu Fang1,Ai Qinglin1,Xu Hongwei1,Ouyang Jing1
摘要: 针对自然环境中阴雨天会大大降低光伏面板的发电量,使得光伏阵列的输出功率与逆变器额定功率无法匹配,从而引起光伏发电系统总功率大幅下降的问题,采用分布式光伏阵列及逆变器的群控方法,通过开关矩阵将光伏阵列与逆变器相连,形成分布式光伏阵列及逆变器拓扑网络结构,并详细阐述了该拓扑网络结构的工作原理与工作机制.研究了该网络的群控系统,并提出相应的自适应聚类算法,实现多逆变器光伏发电网络的群控管理.最后对整个网络结构系统进行了仿真分析及试验验证,结果表明,在不利于光伏发电的恶劣天气条件中,该控制策略可对不同逆变器的输入功率进行优化匹配,从而提高整个光伏发电系统的发电效率.
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