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

Abstract

A day-ahead optimization scheduling method for a wind-solar storage cogeneration system comprises the steps of: obtaining various optimization data, and determining an optimization space of a wind-solar storage cogeneration system; establishing an optimization model using the maximum active total power as a target according to a power grid model of an actual power grid; adding the penalty quantity of the change relationship of a total active power curve into an optimization target, so as to obtain an optimization scheduling model in which it is taken into account that the power generation curve is smooth; and linearizing a non-linear factor in the model, and solving same using a dual simplex method to obtain an active power generation curve of the wind-solar storage cogeneration system, reporting same to an upper-level scheduling centre, obtaining a charge and discharge plan of an energy storage device, and issuing same to a subsystem for execution. The method greatly improves the optimization configuration capability of electric power resources.

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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