Abstract
A large number of distributed generations (DGs) penetrate into power systems, which will be limited when participating in the power market scheduling. In view of this, this study proposes a two-layer optimal scheduling strategy for multiple virtual grids, which takes into account coordination among virtual grids and optimization within virtual grids. (1) Coordinated optimization among multi-virtual grids based on balanced power bidding strategy and non-cooperative game. (2) In the virtual grid, the power generation unit models are established to realize the internal power distribution. (3) Considering inter-grid coordination and intra-grid optimization, a two-layer optimal scheduling strategy for multiple virtual grids is proposed to maximize the overall operating income and minimize power generation costs. The optimal solution of the scheduling strategy is obtained to realize the coordination of source, storage and load. The simulation results in MATLAB show that the method can obviously improve the economic benefits of virtual grid and ensure the efficient use of resources.
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