Research On Pricing Model Of Multi-energy Co-supply In Regional Integrated Energy System

China’s economy is growing steadily at a medium and high speed,but the energy crisis and environmental pollution are becoming increasingly severe.Therefore,it is urgent to improve the efficiency of renewable energy utilization and achieve clean production as soon as possible.Regional Integrated Energy System(RIES)has great advantages in the efficient use of energy,and multi-energy operation is one of the core issues of RIES’s energy management.As the reform of the electricity market deepens,it is necessary to further consider the issue that RIES participates in the electricity market in the process of multi-energy operation optimization.As an independent market participant,RIES should not only be able to provide energy supply services to end users through reasonable operation optimization in the face of the wind power output uncertainty,but also provide users with reasonable multi-energy joint supply prices while participating in the electricity market.First of all,based on the literature review of RIES operation optimization methods,energy trading mechanisms and energy pricing strategies,this paper introduces a load aggregator(LA)and proposes a bilateral transaction mechanism between RIES and LA.Secondly,under this mechanism,based on LA,this paper introduces the Information Gap Decision Theory(IGDT)to describe the price of multi-energy co-supply,and constructs the multi-energy joint demand response model for LA to get the energy demand curve.Third,based on the RIES,this paper applies robust optimization methods to deal with the uncertainty of renewable energy output,and builds the RIES market transaction and energy scheduling optimization model based on the energy demand curve declared by LA,and then,this paper obtains the energy scheduling results of RIES.Finally,based on the above models and the transaction mechanism,the shadow price method is used to form the RIES multi-energy co-supply pricing model.The research results show that the bilateral transaction mechanism can fully guarantee the reasonable income of RIES and LA.Under this mechanism,the IGDT method can help LA reasonably describe the multi-energy co-supply price of RIES,and stimulate the multi-energy joint demand response of LA such as the transfer of electricity,heat,and cooling loads.The constructed LA multi-energy joint demand response model can provide a scientific quantitative decision-making tool for LA to declare the energy demand curve.Robust optimization methods can significantly improve wind power accommodation.The RIES market transactions and energy scheduling optimization model can enable RIES to optimize its own energy scheduling when participating in the electricity market.It provides a scientific quantitative decision-making tool for the multienergy co-supply strategy of RIES.The RIES multi-energy co-supply pricing model can finally realize the RIES multi-energy co-supply price decision,thereby guaranteeing the reasonable income of RIES.The research results of this paper can provide reference for business entities in pricing strategy and other related issues.