Cascade reservoir group short-term optimization scheduling method and system

Abstract

The invention discloses a cascade reservoir group short-term optimization scheduling method and system, and belongs to the field of hydro-thermal power station collaborative optimization scheduling, and the method comprises the steps: obtaining the fitness of each individual in an initial population, and updating the positions of an optimal fitness individual, a suboptimal fitness individual and athird optimal fitness individual in the population; updating the positions of all individuals in the population, and generating a temporary population; screening populations by adopting a mutation strategy based on the populations and temporary populations obtained after updating all individual positions of the populations; and an adaptive boundary strategy is adopted to effectively prevent the population from falling into local optimum; and updating all individual positions in the population through iteration, and outputting the optimal fitness individual position as the optimal scheduling process of the cascade hydropower system after a stop condition is reached. The invention has the advantages of being high in convergence speed, high in solving precision, high in optimizing capacity,capable of effectively avoiding falling into a local optimal solution and the like, can well coordinate cooperative scheduling of the water-heat power stations between the power grids, improves economic benefits and has high practical value.

Description

technical field [0001] The invention belongs to the field of coordinated optimal dispatching of water and thermal power stations in a power grid in a short period of time, and more specifically relates to a method and system for short-term optimal dispatching of cascade reservoir groups. Background technique [0002] In the operation of the power grid, in order to improve the efficiency of the power grid, it is necessary to increase the output of the hydropower station as much as possible in a short period of time while ensuring the stability of the residual load of the power grid, so as to reduce the frequent output changes of thermal power units and ultimately improve the economic benefits of the entire power grid. Among them, the objective function adopts the minimum square difference of the residual load of the cascade power station, and the specific formula is: Among them, L t is the load demand of the t-th time period in the power station; T is the number of dispatch...

AI Technical Summary

Problems solved by technology

[0011] Aiming at the above defects or improvement needs of the prior art, the present invention proposes a short-term optimal scheduling method and system for cascade reservoir groups, thereby solving the technical problems of the existing GWO algorithm such as sharp decrease in diversity and slow convergence speed in the search process

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