Centralized Trading Pricing Strategy for Regional Integrated Energy System

In order to improve the energy utilization ratio of the regional integrated energy system(RIES), we need to study the trading mechanism of each sub regional integrated energy system(SRIES). In this paper, a centralized energy trading framework for RIES is established. In order to get the optimal price strategy of Middle Agent (MA) and the operation strategy of each SRIES, the master-slave game model is constructed and solved by two level iterative optimization method. The example analysis shows that the MA adopts the optimal price strategy, which can substantially increase the profit compared with the grid price strategy. Meanwhile, the SRIES reduces the operation cost through multiple complementary functions. Due to the increase in the amount of electrical energy interaction in the RIES, the unbalanced electricity amount settled by the MA and the power grid will decrease, making the power grid more secure and stable.