Medium-term and long-term combined power generation optimal scheduling method and system in cascade reservoir group

Abstract

The invention discloses a medium-term and long-term combined power generation optimal scheduling method and a medium-term and long-term combined power generation optimal scheduling system in a cascade reservoir group. The method comprises the following steps that: S1, a scheduling server establishes and stores three medium-term and long-term optimal scheduling models, namely a model of largest cascade power generation capacity, a model of largest cascade power generation capacity which gives consideration to guaranteed output, and a model of largest cascade energy storage; S2, the scheduling server selects an optimal medium-term and long-term optimal scheduling model according to a power generation optimal objective; S3, a data acquisition device acquires materials required for solving the models, and the scheduling server solves the medium-term and long-term optimal scheduling models by selecting algorithms; and S4, the scheduling server generates and outputs a medium-term and long-term power generation scheduling optimal scheme. By the method and the system, the phenomenon that a large quantity of optimization variables and constraint conditions of cascade reservoir optimal scheduling influence computational efficiency and result reasonability can be avoided; and an optimal medium-term and long-term combined power generation optimal scheduling scheme is obtained.

Description

technical field [0001] The invention relates to a cascade reservoir group mid-long term combined power generation optimization dispatching method and system, belonging to the field of cascade reservoir group power generation optimization dispatching. Background technique [0002] Reservoir optimal scheduling aims to establish a water conservancy and hydropower system objective function centered on the reservoir. According to the characteristics of the reservoir and the comprehensive utilization requirements, the constraint conditions are drawn up, and then the system equations composed of the objective function and the constraint conditions are solved to make the objective function obtain an extreme value. value reservoir scheduling method. The purpose of optimal dispatching of cascade hydropower stations is to improve the utilization rate of water (energy) resources and increase the benefit of reservoirs through non-engineering measures. There are two main problems to be s...

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Problems solved by technology

Throughout the history of reservoir optimal dispatching research at home and abroad, reservoir optimal dispatching research mainly focuses on models and algorithms, and most of the research objects are single reservoir power stations. In terms of optimal criteria, objective functions, model solving algorithms, constraints of reservoirs and power stations, or the connection between water regulation and electricity regulation, there is currently no mature and perfect theory

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