Abstract

This paper studies the energy trading among multiple connected microgrids, and analyzes the impacts of such trading on the microgrids' costs. In our model, microgrids with excessive power generations can trade with other microgrids in deficit of power supplies for mutual benefits. We design a bargaining-based energy trading market, where all the interconnected microgrids cooperatively decide the amount of energy trade and the associated payments. We propose a decentralized algorithm to solve the bargaining problem, with minimum information exchange overhead. Numerical studies based on realistic data demonstrate the effectiveness of the bargaining-based energy trading market design, and show that the reduction of total cost of the interconnected-microgrids system can be up to 22% comparing with the case of no trading.

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