YE bin1, LI Wan qi2, WANG Xu li1 GE Fei1, XIONG Shi wang2, 

ZHOU Xian zheng2, GUO Chuang xin2

（1.State Grid Anhui Economic Research Institute. Hefei 230022, China; 

2.School of Electrical Engineering, Zhejiang University, Hangzhou 310027, China）

 

 

Abstract: Aiming at distribution network planning problem which contained photovoltaic power, considering the influence of the weather and the change of the flow direction of the distribution network and the voltage deviation, a distribution network planning method considering different PV penetration rate and grid operation risk was proposed. The weather condition was classified into three categories, then three typical PV output curves were obtained. Two state weather model was adopted, the influence of weather conditions on the planning scheme of grid lines was characterized by the line failure rate and PV output under different weather conditions, and the operation risk of the planning scheme was evaluated by the system load loss value. The economic performance of the photovoltaic power generation investment was put forward, which was used to evaluate the economic performance of different PV penetration rate, at last, comprehensive planning scheme was given, which was proved by two different distribution network test system. The results indicate that photovoltaic permeability has an important influence on the PV investment income ratio and the grid line planning.

Key words: distribution network planning; risk planning; photovoltaic permeability; weather condition; failure probability model