Low-carbon Dispatching of High Proportion Photovoltaic Distribution Network Considering Demand Response
In a low-carbon power system,as the terminal of the power consumption,the low-carbon operation of distribution networks has an important impact on reducing the carbon emissions of the power systems.It has become an urgent issue how to coordinate the low-carbon economy operation at the distribution network level.This paper proposes a low-carbon dispatching model which considers the carbon emission and the demand response of a distribution network.Firstly,considering the characteristics that the distribution networks always receive the electricity from the main network,a distribution network carbon emission model based on the carbon emission flow theory is constructed,and the low-carbon indicators for the distribution network are proposed.Secondly,an improved dynamic carbon emission factor of the distribution network is proposed as a guidance signal to provide a reference for the low-carbon power consumption of the distribution network users.According to the characteristics of the users in the distribution network,the industrial DR model aiming at the dispatching cost and low-carbon,and the residential DR model aiming at the electricity consumption satisfaction and low-carbon satisfaction are built respectively.Finally,the simulation results in an improved IEEE-33 node distribution system show that the distribution network dispatching model proposed in this paper is able to effectively reduce the carbon emission of the distribution network and increase the photovoltaic absorption in the distribution network.