Day-ahead optimal scheduling method for wind-solar storage integrated power generation system

Abstract

The invention discloses a day-ahead optimal scheduling method for a wind-solar storage integrated power generation system. The method comprises the following steps: acquiring various optimization data and determining the optimization space of the wind-solar storage integrated power generation system; building an optimization model taking the maximum total active power as the target according to the grid model of a practical power grid; adding the punishment quantity of the total active power output curve variation relationship to the optimization target to obtain the optimal scheduling model putting smooth power generation curve into consideration; linearizing the nonlinear factors in the model, obtaining the active power generation curve of the wind-solar storage integrated power generation system through solving by the dual simplex method, submitting the active power generation curve to a superior scheduling center; and acquiring the charge-discharge plan of an energy storage device and issuing the plan to subsystems for execution. By adopting the method provided by the invention, the power resource optimal configuration capability is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of power system scheduling automation, and relates to a day-ahead optimization scheduling method for a wind-solar-storage combined power generation system. Background technique [0002] With the increasingly severe energy and environmental issues, the issue of energy conservation and emission reduction has received widespread attention worldwide. Wind energy and solar energy are renewable and pollution-free green energy sources. Wind power generation and photovoltaic power generation have been vigorously developed in recent years. Wind and wind power generation depends on changing weather conditions, and the active output will fluctuate violently between different periods. For example, the output power is high in the previous period, and then falls to a low level in the next period. The increasing number of renewable energy sources such as large-scale wind power and photovoltaic power generation in the syst...

AI Technical Summary

Problems solved by technology

However, there is currently no effective dispatching method to realize the optimal dispatching of active power of wind-solar-storage combined power generation system

In actual operation, the power system dispatching center often manually formulates the power generation plan of the wind-solar-storage combined power generation system based on operating experience, which makes it difficult to ensure the safety and economy of dispatching and operation, and also brings a huge workload to the operators.

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