Heterogeneous ocean island microgrid system and distributed energy transaction method thereof

Abstract

The invention discloses a heterogeneous ocean island microgrid system and a distributed energy transaction method thereof, and belongs to the field of ocean island microgrid energy management; the system comprises a power generation island, a production island and a load island, and the method comprises the following steps: processing the uncertainty problem of renewable energy power generation byadopting a robust optimization method, realizing a two-way interaction process among aggregators in a power generation island, a production island and a load island through a dynamic non-cooperativegame framework, and designing a distributed iterative algorithm to find a Nash equilibrium strategy, namely, finding out the optimal power supply quantity and the optimal electricity price of the power generation island, finding out the optimal electricity purchase quantity, the optimal hydrogen supply quantity and the optimal water supply quantity, the optimal hydrogen price and the optimal waterprice of the production island, finding out the optimal electricity purchasing quantity, hydrogen purchasing quantity, water purchasing quantity and optimal load energy consumption quantity of the load island; and meanwhile, the total cost of each aggregator in the power generation island, the production island and the load island is minimum. Therefore, the problem of multi-energy supply of the ocean island microgrid can be effectively solved, and economical and efficient operation of the heterogeneous ocean island microgrid system is ensured.

Description

Technical field[0001]The invention belongs to the field of energy management of remote ocean island microgrid, and more specifically relates to a heterogeneous ocean island microgrid system and a distributed energy transaction method.Background technique[0002]There are many ocean-going islands on the earth. They are not only defense outposts, but also a symbol of national sovereignty. They are also an important guarantee for the integrity of national territory and sovereignty. Providing a stable energy supply for ocean-going islands is vital to the work and life of island residents. Because ocean-going islands are far away from the mainland, it is difficult for them to be directly connected to the main grid on the mainland, and the scale and resource distribution of ocean-going islands are uneven. There are three types of ocean-going islands, namely power generation islands, production islands and load islands. A large number of renewable energy generators are deployed on or near th...

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Problems solved by technology

[0005] Aiming at the defects of the prior art, the purpose of the present invention is to provide a heterogeneous offshore island microgrid system and its distributed energy trading method, aiming at solving the problem of low operating reliability of the existing oceanic island microgrid energy management method, which cannot provide users with The problem of providing a stable and reliable multi-energy supply

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