An Alternating Direction Method of Multipliers Based Distributed Planning Model for Natural Gas Network, Electricity Network and Regional Integrated Energy Systems

Regional integrated energy system coupling with multi-energy devices, energy storage devices and renewable energy devices has been regarded as one of the most promising solutions for future energy systems. Existing natural gas network and electricity networks expansion planning, regional integrated energy systems siting planning, interior equipment’s type and capacity planning are urgent problems in practical industrial establishments. This paper proposed a joint planning model to address above problems firstly; however, joint planning model misleads the ownerships of three agents which investment decisions are generally made by different investors. Furthermore, the joint planning model is decomposed into three planning sub-problems related to corresponding stakeholders, and the alternating direction method of multipliers is adopted to solve the tripartite distributed planning problem. The effectiveness of the planning model is verified on an updated version of IEEE 24-bus electric system, Belgian 20-node natural gas system, and three assumed integrated energy systems. Simulation results illustrated that distributed planning model is more sensitive to individual load differences, which is precisely the defect of the joint planning model. Moreover, the algorithm performance considering convergence errors, rates of convergence and the impacts of penalty parameters are further analyzed.