Cascade hydropower station short-term multi-objective optimization scheduling method considering peak regulation requirements

Abstract

The invention belongs to the field of hydropower dispatching operation, and relates to a cascade hydropower station short-term multi-objective optimization dispatching method considering peak regulation requirements. The peak load of a power grid is adjusted. The hydroelectric power generation efficiency is improved. The complex operation requirements of the cascade hydropower station and the unitvibration area constraints are considered. A cascade hydropower station multi-objective short-term optimization scheduling model is constructed by using mixed integer nonlinear programming. The modelis solved by using an improved normalization method plane constraint method to obtain a Pareto solution set containing a plurality of non-inferior solution schemes so as to provide powerful support for final decision making of scheduling personnel. In addition, a membership degree value calculation method based on fuzzy evaluation is used for evaluating each solution in the solution set, and a decision suggestion scheme is selected for reference of scheduling personnel. Starting from the actual situation of hydropower short-term optimal scheduling, complex power generation operation constraints of the power station are comprehensively considered, comprehensive operation benefits of multiple aspects are considered, and the complex scheduling operation requirements of cascade hydropower stations are met.

Description

technical field [0001] The invention belongs to the field of hydropower dispatching operation, and in particular relates to a short-term multi-objective optimal dispatching method for cascade hydropower stations considering the demand for peak regulation. Background technique [0002] With the continuous rapid development of the economic level, the energy consumption structure has undergone tremendous changes, resulting in a continuous increase in social power demand, and at the same time, the gap between the daily maximum load and minimum load of the power grid is also increasing sharply. Excessive peak-to-valley gap leads to insufficient power generation capacity of the power grid during peak hours, and part of the load needs to be disconnected from the power grid; at the same time, it also leads to insufficient down-regulation capacity of the power grid during low load periods, and thermal power units face deep peak regulation, which poses a serious threat To the safe and...

AI Technical Summary

Problems solved by technology

Excessive peak-to-valley gap leads to insufficient power generation capacity of the power grid during peak hours, and part of the load needs to be disconnected from the power grid; at the same time, it also leads to insufficient down-regulation capacity of the power grid during low load periods, and thermal power units face deep peak regulation, which poses a serious threat To the safe and stable operation of the power grid

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