Game theory-based multi-micro-grid interconnection running optimization method

Abstract

The invention discloses a game theory-based multi-micro-grid interconnection running optimization method. The method includes the following steps: analyzing load demand response characteristics of allmicro-grids, and constructing a micro-grid group model; then initializing a system, establishing a day-ahead game model, and calculating a net load of the i-th micro-grid in a j-th period and a totalnet load amount of the system by day-ahead forecast data; obtaining respective optimal strategies by solving by all the micro-grids according to initial status, carrying out information exchange in amicro-grid group, sharing respectively obtained best strategy information, and updating status information; judging, by a system control center, whether Nash equilibrium is reached, and if the systemmeets an equilibrium condition, ending a game, and outputting a final optimization strategy set; and otherwise, turning ahead to carry out optimization again according to updated status information.The method can give consideration to both the stability and the economy of the system, and realize individual benefit maximization and optimal group running of the micro-grids at the same time.

Description

technical field [0001] The invention belongs to the technical field of multi-microgrid interconnection operation optimization, and specifically relates to a multi-microgrid interconnection operation optimization method based on game theory. Background technique [0002] Facing increasingly severe energy and environmental problems, the development of renewable energy has become an important work in the energy field of today's society. However, renewable energy has strong randomness and intermittent characteristics, and it is difficult to maximize its utilization. Only by realizing energy interconnection and sharing among multiple microgrids and realizing efficient transmission of renewable energy power generation can the complete realization of renewable energy be achieved. effective use. [0003] Micro-grid (Micro-Grid), also translated as micro-grid, refers to a small power generation and distribution system composed of distributed power sources, energy storage devices, en...

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Problems solved by technology

[0004] In order to overcome the shortcomings of slow response speed, low reliability and low efficiency caused by many uncertainties in the existing research on microgrid groups, this invention comprehensively considers the interaction between the power market and the demand side, and proposes a multi- Microgrid interconnection operation optimization method, based on real-time electricity prices, considering load demand response, combined with multi-microgrid interconnection operation mode, establishes a non-cooperative game model, and iteratively solves its Nash equilibrium to obtain the optimal dispatching strategy

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