| Energy scarcity and environmental pollution are two significant challenges facing the world today.It is particularly crucial to develop and promote a variety of renewable energy sources,such as wind,solar,and hydro energy,and to establish new clean and efficient power systems to mitigate their effects.As the demand for energy continues to grow,integrated regional energy systems break the pattern of discrete energy sources to achieve multi-energy complementary synergies and promote low-carbon economies and sustainable development.At the same time in the field of energy market,with the new round of power system reform in an orderly manner,the decision makers tend to diversify their development and form a competitive pattern of interests of multiple subjects.Therefore,in order to avoid the issues of unfair distribution and waste of resources,and to promote coordination and balance of interests among multiple stakeholders for a mutually beneficial outcome,it is crucial to conduct research on the synergistic optimization of integrated energy systems that incorporate multiple sources of energy.This research should be conducted within a game-theoretic framework.Firstly,the development status of the complementary water-wind-solar power generation technology,the carbon capture and coupling electric-gas conversion device,and the research status of game theory applied in integrated energy systems were analyzed.Against this background,a low-carbon regional architecture of complementary water-wind-solar power,carbon capture and coupling electric-gas conversion devices,energy storage devices,etc.was constructed,and the basic characteristics and principles of the water-wind-solar multi-energy complementary low-carbon system were explored.The study investigated how the system achieves mutual energy conversion and complementary coordination,providing a basic support for subsequent research.Secondly,due to the autonomous distribution of each region and the lack of coordination between regions,the new energy consumption is incomplete and the resource allocation is unreasonable,this paper introduces various game mechanisms based on game theory ideas.Based on the fact that each region is in a competitive situation during the dispatching process and shows a tendency towards profit,a multi-regional cooperation game dispatching model is constructed,with the objective of maximizing the total system revenue including CO2 emission costs.In order to increase the initiative of each sub-system in the cooperation,an asymmetric Nash bargaining method is used to reasonably allocate the revenue.Considering that the proposed model is a convex optimization problem,the distributed ADMM algorithm is used to solve it,which has good convergence and robustness.The simulation example shows that the proposed model can effectively promote multi-energy sharing and mutual benefit,improve the load profile,reduce the system operation cost and reduce carbon emission.Finally,in response to the conflicting interests of multiple decision makers,the multi-regional collaborative optimisation is transformed into a problem of seeking strategic equilibrium for multiple players.A Stackberg-Nash master-slave game model with the operator as the leader and the multi-region as the follower is introduced to coordinate energy trading and to realise tariff strategy adjustment at the upper level and regional energy management at the lower level.The lower tier multi-region forms a cooperative alliance for power mutualisation and coordinated optimisation,and uses a mechanism of Shapley values to reasonably distribute the benefits.The model is solved using the GA genetic algorithm,which has good global optimisation seeking capability and solution speed.The simulation example shows that under this game mechanism,the upper tier DSOs significantly increase their own revenue by adjusting their tariff strategy and promote multi-regional cooperative sharing;the lower tier IESs collaborate to optimise their internal dispatch,avoiding the efficiency loss caused by the power of the operator’s market monopolist and improving the level of market energy output.The proposed approach is effective and superior as it helps to reduce energy costs and carbon emissions,increase new energy consumption,and protect the interests of all players. |
