A semi-decentralized framework for simultaneous expansion planning of privately owned multi-regional energy systems and sub-transmission grid

This paper reports a semi-decentralized framework for joint expansion planning of privately owned multi regional energy systems (MRGES) and sub-transmission grids. Multi-agent systems are employed for decentralization purpose and facilitated participation of private ownerships in planning model by preventing agents to disclose their private properties. Regional energy system's agents and the sub-transmission expansion planner's agent are the active players of the proposed method, where exchange of information among them is fully decentralized and an independent coordinating agent (ICA) is responsible for conducting market operation and evolutionary stability state (ESS) extraction. By applying the fuzzy satisfying and Max-Min method, the ESS point of the agents' payoff is determined by ICA. Simulations are carried out on a ten-bus network to validate the efficacy of the suggested framework. The obtained simulation results are compared to those of traditional expansion planning, indicating the superiority of the proposed model.