Abstract
A regional integrated energy system (RIES) is an electricity-centric multi-energy system that can realize the mutual conversion of electricity, heat, cold, and other energy. Through multi-flexible resource interaction and the transaction of multi-investment entities, the efficiency of energy utilization can be improved. To systematize energy-consuming entities and scale photovoltaic-based renewable energy in a distribution network, the energy-consuming behavior, energy-producing schedule, and trading strategy can be coupled. Considering the interaction between the energy-consuming behavior and the uncertainty of distributed photovoltaic output, an optimal operation method for RIES is proposed on the basis of social network theory and an uncertain evolutionary game method in this paper. From the perspective of the operator, the overall profits of RIES are maximized considering the entity characteristics of both the demand and the supply side. A case study shows that the proposed method can ensure the reasonable distribution of profit among the investment entities. A closer social relationship between energy-consuming entities or a lower transaction risk cost of energy-producing entities can increase the overall energy transaction profit.
Highlights
The main contributions are as follows: (1) An alliance strategy for energy-consuming entities in a community integrated energy systems (CIESs) is proposed on the basis of social network theory, which can simplify the number of transaction objects while considering the coupling relationship on the demand side
(3) Considering the uncertainty of distributed photovoltaic output and the energyconsumption interactions, an optimal operation method for regional integrated energy system (RIES) based on social network theory and the uncertain evolutionary game method is proposed in this paper
(4) A case study is carried out for an RIES consisting of three CIESs; the results show that the proposed method can ensure a reasonable distribution of benefits for each participant, while having great significance for optimizing the energy composition and promoting the local consumption of renewable energy
Summary
With the increasing energy consumption worldwide, traditional energy is facing a severe situation. Electrical energy is the core of the IES, which can realize the mutual conversion of electricity, heat, cold, and other sources of energy, as well as the flexible distribution of multiple types of consumption and the optimized coordination of multiple market entities. It can effectively improve the energy utilization efficiency and play an important role in sustainable energy systems [3,4]. RIES users conduct integrated energy transactions with the energy operator to flexibly meet the needs of users for multiple types of loads such as electricity, heat, and cold. To balance the interests of all parties, promote optimized operation, and produce overall benefits, it is necessary to formulate an energy operation plan, which is suitable for RIESs to achieve the benign guidance of the energy usage and transaction behavior of each entity
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