Method for mixedly optimizing and dispatching hydropower station group, power stations and units

Abstract

The invention belongs to the field of hydropower dispatching and discloses a method for mixedly optimizing and dispatching a hydropower station group, power stations and units. The method includes firstly, adopting the power stations as basic dispatching units to optimize and calculate the hydropower station group to generate initial solution, solving and optimizing the initial solution; then adopting an in-factory economic running method in the power stations requiring output control to the units, distributing output of each unit at each time section by utilizing water consumption as the minimum standard under constraint of increasing and decreasing trend during total output process of hydropower stations; and finally, under support of basic regulating and controlling algorithm of the units, optimizing and dispatching the different power stations by taking the power stations or the units as basic dispatching units and utilizing successive approximation algorithm according to the requirement that whether regulation and control are refined to the units or not. Security constraint of the power grid is involved in the automatic control method, security of the power grid and control target of a centralized control center can be taken into consideration at the same time, organic connection of online real-time control and offline short-period dispatching plane is realized, and the requirements for control security, timeliness, practicality and economy can be met.

Description

technical field [0001] The invention belongs to the field of hydropower dispatching. According to different dispatching requirements, the power generation flow of some power station units can be used as the decision variable, and the power generation flow of other power stations can be used as the decision variable. The successive approximation method is used to optimize the hybrid hydropower station and hydropower unit objects. Scheduling method. Background technique [0002] The short-term optimal dispatching of hydropower station groups generally includes two modes: (1) The hydropower station is used as the basic unit of optimal dispatching, and the power generation flow and final water level of each period of the hydropower station are used as decision variables, and the optimal dynamic characteristic curve of the hydropower station is used to describe different water heads. The relationship between hydropower station output and power generation flow under the optimal ou...

AI Technical Summary

Problems solved by technology

In practice, some hydropower stations in a hydropower station group system need to issue power generation plans based on unit output, while other hydropower stations issue power generation plans based on the total output process. Therefore, the aforementioned mode (1) cannot meet the requirements, while mode (2) causes excessive calculation burden. heavy, not conducive to application

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