An ADMM-Based Distributed Planning Strategy for Natural Gas Network and Electricity Network and Regional Integrated Energy Systems.

Integrated energy system coupling with multi-energy devices, energy storage systems, and renewables has been regarded as one of the most promising solutions for future energy systems. Existing natural gas and electricity networks expansion planning, regional integrated energy system siting planning, and interior equipment’s type and capacity planning are urgent problems in practical projects. This paper proposed a joint planning strategy to address the above problems firstly; however, joint planning strategy misleads the ownerships of three agents which investment decisions are made by different investors. Furthermore, the joint planning model is decomposed into three planning subproblems 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 method is verified on an updated version of IEEE RTS 24-bus electric system, Belgian 20-node natural gas system, and three assumed integrated energy systems. Moreover, algorithm performance considering convergence error, convergence performance and the impact of penalty parameters are further discussed.

耦合多能设备、储能系统与可再生能源的综合能源系统，已被视为未来能源系统最具前景的解决方案之一。当前实际工程中，天然气与电网扩容规划、区域综合能源系统选址规划，以及内部设备选型与容量规划均为亟待解决的痛点问题。本文最初提出了一种用于解决上述问题的联合规划策略，但该策略混淆了由不同投资方做出投资决策的三类主体的权属关系。据此，本文将联合规划模型拆解为对应不同利益相关方的三类规划子问题，并采用交替方向乘子法（Alternating Direction Method of Multipliers）求解该三方分布式规划问题。本文通过更新版IEEE RTS 24节点电力系统、比利时20节点天然气系统，以及三套预设综合能源系统对所提规划方法的有效性进行了验证。此外，本文还进一步讨论了考虑收敛误差、收敛特性以及惩罚参数影响的算法性能表现。