一种用于单相光伏并网发电系统的高频孤岛检测方法.PDF

59 Journal of Technology, Vol. 31, No. 1, pp. 59-68 (2016) 1, 2, * 1 2 2 1 2 PCC 1kHz A HIGH FREQUENCY ISLAND DETECTION APPROACH APPLIED IN SINGLE-PHASE GRID-CONNECTED PV GENERATION SYSTEM Peng Mao1, 2, * Mao Zhang1 Deyi Fu2 Weiping Zhang2 1School of Information and Electronics Beijing Institute of Technology Beijing, China 100081, P.R.C. 2School of Information Engineering North China University of Technology Beijing, China 100144, P.R.C. Key Words: single-phase grid-connected inverter, island detection, active method, high frequency injection. ABSTRACT Island detection is a necessary feature of the photovoltaic (PV) generation system. Both passive and active anti-island methods exist. Typically, active methods modify a given parameter, which also affect the shape and quality