Unified Control Strategy for Grid-connected Photovoltaic Systemwith Electric Energy Quality Adjustment based on Improved FBD Method
Jiao Mingxi1, Li Qiang2, Zhang Xu3
1. State Grid Changchun Power Supply Company Development Planning Department, Changchun 130000; 2. State Grid Heze Power Supply Company Development Planning Department, Heze, Shandong 274000; 3. Shandong Guoyan Electric Power Co., Ltd, Ji’nan 250000
Abstract For the purpose of improving the utilization and performance of grid-connected photovoltaic system, this paper studies a unified control strategy for grid-connected photovoltaic and reactive compensation and harmonic suppression. Compared to the traditional theory of instantaneous reactive power, the introduced and improved FBD method does not need the complicated calculation for transformation, and save the cost of hardware because of no need for phase-locked loop and other relevant electronics circuit. This method can enhance the dynamic response capability and accuracy, and improve the electric energy quality meanwhile grid connected photovoltaic. Based on the results of simulation, it proved that the unified control strategy is correct and effective.
Jiao Mingxi,Li Qiang,Zhang Xu. Unified Control Strategy for Grid-connected Photovoltaic Systemwith Electric Energy Quality Adjustment based on Improved FBD Method[J]. Electrical Engineering, 2017, 18(2): 106-110.
2017, Vol. 18 
