Annealing algorithm based grid-connected type micro-grid optimal dispatching method

Abstract

The invention provides an annealing algorithm based grid-connected type micro-grid optimal dispatching method. The method comprises the steps of setting an initial quantity; generating an initial solution x randomly according to the set initial quantity, and calculating a target value of a target function f(x); applying a disturbing function to randomly generate a new solution x', and calculating a target value of a target function f(x') according to the new solution; obtaining a difference value of target values in the third step and the second step as per the formula that delta f=f(x')-f(x); and comparing the delta f with 0, if delta f<=0, accepting the new solution, if delta f>0, accepting the new solution according to a Metropolis criterion, judging whether iteration ending conditions are met or not, if iteration ending conditions are met, ending computation and returning to deduce an optimal dispatching scheme, and if the number of iteration ending times is not achieved, returning to the third step for resetting iteration. The method has the advantages of being capable of effectively controlling the system cost and pollution emission.

Description

technical field [0001] The invention belongs to the field of electric power systems, and in particular relates to a dispatching method of electric power systems. Background technique [0002] With the rapid development of microgrid (hereinafter referred to as microgrid) technology, the grid connection of microgrid system will be the focus of microgrid development in the future. Only when the microgrid is closely connected with the large power grid can the advantages of the microgrid be fully utilized. When the microgrid is connected to the grid, it is the most effective way to save the cost of the grid by reasonably considering the source of energy required by the system load. In the existing technology, there is only a large power grid optimal dispatching method, which refers to the installation of an industrial TV monitoring system in power regulation, and its purpose is to improve the speed of solving emergency situations during the time period of ensuring power dispatch...

AI Technical Summary

Problems solved by technology

At this stage, the power dispatching technology in the large power grid is relatively mature, but the dispatching of the micro-grid is widely distributed and the energy supply is complex, so the optimal dispatching method of the large-scale power grid is not completely suitable for the optimal dispatching method of the micro-grid system.

At present, there is no optimization method that considers the economic performance of various equipment and the impact of pollution emissions on the optimal dispatch of the microgrid on the basis of the optimal dispatch of the large power grid, and comprehensively influences various aspects to accurately measure the economic performance of the system.

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