Abstract: Surplus distributed photovoltaic（PV）power sold to the grid with a new compensation price brings opportunities and challenges for optimal microgrid operation.This paper aims at maximizing the net operating earnings of a microgrid.Firstly,the impact of PV compensation price on the operation of microgrid is analyzed,and a decision-making scheduling model considering the subsidies of PV surplus power is established.Then the sequential quadratic programming（SQP）algorithm is utilized to solve the established model.Finally,some case studies are done based on the real data from an actual microgrid system,the differences of microgrid economic benefit with the gird accessed to residential,commercial and industrial areas are compared respectively.The sensitivity analysis is also performed to study the impact of PV capacity and on-grid price on the economic benefits of a microgrid.