Virtual power plant optimal scheduling method based on contraction space harmony algorithm

Abstract

The invention discloses a virtual power plant optimal scheduling method based on a contraction space harmony algorithm, which comprises the following steps: S1, constructing a virtual power plant aggregated by a photo-thermal power plant, a thermal power plant and a clean energy power plant, and determining a scheduling optimization objective function and constraint conditions of the virtual powerplant according to the net income maximization of the virtual power plant; S2, taking the scheduling optimization objective function as an evaluation function of a contraction space harmony algorithm, and taking the constraint condition as a harmony variable constraint interval of the contraction space harmony algorithm; and S3, according to the evaluation function and the harmony variable constraint interval, obtaining the maximum value of the evaluation function and the harmony variable enabling the evaluation function to take the maximum value by using a contraction space harmony algorithm. The method has the advantages of being simple in implementation method, flexible in application and the like, the solving efficiency of the power dispatching scheme can be effectively improved, andthe power dispatching scheme which is more reasonable and better in economic benefit can be obtained.

Description

technical field [0001] The invention relates to the technical field of power plant control, in particular to an optimal scheduling method for a virtual power plant based on a shrinking space harmony algorithm. Background technique [0002] The rapidly developing photovoltaic and wind power generation technologies have alleviated the energy crisis to a certain extent, but due to their strong volatility and strong intermittent characteristics, photovoltaic and wind power cannot be directly dispatched like thermal power. A virtual power plant can aggregate various distributed resources such as wind turbines, photovoltaic power plants, thermal power plants, and controllable loads in terms of electrical characteristics, and use advanced information technology and multi-level control methods to coordinate and optimize the operation of each internal unit to bundle The way of sending out to the power grid can effectively suppress the fluctuations caused by the grid connection of pho...

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Problems solved by technology

[0004] In order to obtain the best dispatching scheme, in recent years, the harmony algorithm has been widely used in the research of power system optimization problems due to its strong global search ability, but it also has the disadvantages of poor search directionality, slow convergence speed in the later stage of optimization, and easy Trapped in a local optimal problem, its solution efficiency and solution accuracy can no longer meet the needs of modern power system dispatching

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