WANG Licheng1, WEN Dongshan1, ZHOU Bin2, LIU Jia2, GUO Chuangxin1

 

(1. College of Electrical Engineering Zhejiang University, Hangzhou 310027, China;

 

2. Maintenance Branch Company, State Grid Chongqing Electric Power Company, Chongqing 400039, China)

 

 

Abstract: Aiming at avoiding problems such as voltage and power flow offlimits in distribution network caused by large amount of active power injection generated by large scale of photovoltaic (PV) generators during summer noon, a photovoltaic output curtailment strategy that can limit the amount of injection active power was proposed. Firstly, a PV output curtailment model was established, through which the maximum allowable output power of PV generators connected in specific nodes could be obtained. On this basis, the maximum allowable output power was transmitted to the controller which is in charge of limiting the output power of PV generators in periods when the insolation is very large. Finally, an example was presented using IEEE33 nodes system. The results indicate that the method proposed is feasible.

 

Key words: photovoltaic curtailment; distribution network; dispatch; optimal power flow