Scheduling strategy and optimization method for hydro-photovoltaic-storage combined power generation

Abstract

The dispatching strategy and optimization method of hydro-photovoltaic-storage combined power generation relate to the technical field of optimal dispatching of multi-energy complementary combined power generation systems. It includes the following steps: S1. Using the dual-output neural network model with the upper and lower limits of the photovoltaic power range as the output to construct the photovoltaic power prediction interval; S2. Constructing the corresponding case The objective function of the hydro-photovoltaic-storage combined power generation system is obtained, and the dispatching model of the combined power generation system in the corresponding situation is obtained; S3, based on the photovoltaic power prediction interval obtained in steps S1 and S2 and the objective function in the corresponding situation, the photovoltaic power is fully consumed as The premise is to formulate an optimization method for output dispatching of cascade hydropower stations and pumped storage power stations. The invention promotes the consumption and utilization of photovoltaic power generation by combining the operation of the cascade hydropower station, the pumped storage power station and the photovoltaic power station, and provides a reference for the operation of the power grid.

Description

technical field [0001] The invention relates to the technical field of optimal scheduling of multi-energy complementary combined power generation systems, in particular to a scheduling strategy and optimization method for hydro-solar-storage combined power generation based on photovoltaic power interval prediction. Background technique [0002] The multi-energy complementary system is an expansion of the traditional distributed energy application, and it is the embodiment of the concept of integrated integration in the field of energy system engineering, which makes the application of distributed energy expand from point to surface, from local to system. Specifically, the multi-energy complementary distributed energy system refers to the "regional energy Internet" system that can accommodate the input of various energy resources and has multiple output functions and transportation forms. It is not a simple superposition of multiple energies, but a comprehensive and complemen...

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Problems solved by technology

[0004] 1) The current research on the joint operation of hydropower and photovoltaic power generation is mainly focused on the combination of hydropower stations with seasonal and above regulation capabilities and photovoltaic power stations. In practice, most hydropower stations are hydropower stations with daily regulation and no regulation capabilities. Their advantages Because of its wide distribution and large quantity, it can be used to meet the complementary needs of "ubiquitous" photovoltaic power plants. The disadvantage is that the adjustment ability is relatively weak;

[0005] 2) The formulation of the current dispatching plan mainly uses the point prediction of photovoltaic power. This kind of method can only obtain the given power value at a certain time in the future, and cannot quantify the deviation of the prediction.

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