Cooperative Operation for Rooftop Photovoltaic Distributed Generation and Residential Buildings

Currently, rooftop photovoltaic (PV) generation on the residential user side has been rapidly developed due to technological progress and related costs reductions. Innovative business models need to be explored to make full use of distributed PV generation. Here, we design a energy trading framework for a residential building cluster consisting of a PV owner and multiple buildings. The Nash bargaining theory is used to solve the cooperative operation problem between the PV owner and buildings. In order to protect individual privacy, a distributed solution algorithm is employed to solve the power sharing problem. And an analytical method is proposed to solve the additional payment bargaining problem. The results show that all participants can benefit from energy sharing and the rationality of the proposed transaction framework is proven. In addition, our results show peak to valley difference of the electricity load can be reduced to 24.3%.