Smooth control method for wind-solar-storage combined power generation system based on power generation curve

Abstract

The invention discloses a wind and solar storage combining power generation system smooth control method based on power generation power curves. Based on the predication power information of a wind power plant and a photovoltaic power station, a system power prediction curve is subjected to optimization, a system power generation power curve is obtained, according to the total power generation power value in the system power generation power curve, corresponding prediction values in a wind power plant power prediction curve and a photovoltaic power predication curve are processed, a wind power generation power curve, a photovoltaic power generation power curve and an energy storage charging-discharging power curve are obtained, subsystems are controlled to work according to the power curves, and under the premise that an energy storage charging state is kept at a reasonable level, power fluctuation is effectively output through a smooth system. The schedulability of the wind power plant and the photovoltaic power station is fully used, under the premise that fluctuation leveling effect is guaranteed, charging-discharging frequency of energy storage equipment is reduced, and the service life of the energy storage equipment is prolonged.

Description

technical field [0001] The invention belongs to the technical field of a wind-solar-storage combined power generation system, and more specifically relates to a smooth control method for a wind-solar-storage combined power generation system based on a power generation curve. Background technique [0002] Clean energy such as wind energy and photovoltaics, as clean, efficient, easy-to-obtain, and energy-free renewable energy, has become an important direction for the development of power grids today. . [0003] However, the driving force of renewable energy such as wind power and photovoltaics is uncontrollable, and the instability and intermittency of wind speed or sunlight determines that the output of wind power or photovoltaics is also volatile and uncontrollable. From the perspective of the power grid, the intermittent power supply running in grid-connected operation is equivalent to a random disturbance source, which will have a certain impact on the reliable operation...

AI Technical Summary

Problems solved by technology

However, it is difficult to guarantee the ultra-short-term stability within a control cycle. It is necessary to coordinate and control the output power of wind turbines, photovoltaic units, and energy storage equipment in the wind-solar-storage combined power generation system so that the system output system power meets the grid-connected standards.

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