Distributed Bargaining Method of a Multi-integrated Energy System Based on Nash Theory

Abstract

Aiming at the scenario of the interconnection of multiple heat and electricity integrated energy systems (HE-IES), this paper proposes a multi HE-IES power trading bargaining method based on Nash bargaining theory. Firstly, build the framework of multi HE-IES, and establish the power interaction model between multiple HE-IES and between HE-IES and distribution network. Secondly, taking the optimal operation cost of the direct transaction between integrated energy system operators (IESO) and Distribution network operator (DNO) as the breaking point of Nash bargaining, a cooperative game model of multi-IES bargaining is constructed. The nonconvex problem is transformed into two convex subproblems and the ADMM is used for the distributed solution. Finally, the effectiveness of the proposed method to reduce the operation cost of the multi-integrated energy system is verified by case analysis.