Wind power generation regulation and control grid connection system capable of combining energy storage and centralized inversion

Abstract

The invention discloses a wind power generation regulation and control grid connection system capable of combining energy storage and centralized inversion, and relates to the field of wind power generation systems. According to the system, an independent rectification part transmits the electric energy which is obtained by independently rectifying by each all-power wind power generator to a centralized energy storage part; the centralized energy storage part is internally provided with an energy storage output part; the centralized energy storage part transmits electric energy to a centralized inversion part; the output side of the centralized inversion part is connected with a transformer part; and the transformer part transmits the stabilized electric energy after voltage transformation to a power grid part. According to the system, a converter and a transformer of the wind power generator are omitted, so that the cost is saved; the energy storage capacity is achieved, the electric energy is stably output to the power grid, and the peak shaving pressure of the power grid is reduced; the centralized energy storage part is adjusted to output electric energy to the centralized inversion part in real time through monitoring on the power grid side and the centralized inversion side, so that it is ensured that the power grid side can obtain the corresponding electric energy quality.

Description

technical field [0001] The invention relates to the field of wind power generation systems, in particular to a wind power generation regulation and grid connection system combining energy storage and centralized inverter. Background technique [0002] With the continuous development of new energy power generation, wind turbine power generation, as one of the most important power sources of clean energy, has gradually increased its proportion in the power grid. However, due to the characteristics of wind speed changes, the output power of wind turbines also changes accordingly, and the output power cannot be stabilized. As the proportion of wind power generation increases, it will have a huge impact on the stability of the power grid. Under the existing wind power generator technology, in order to absorb as much wind power as possible, the grid side needs to be equipped with additional peak-shaving and frequency-regulating power supplies at the same time, which increases the ...

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Problems solved by technology

However, due to the characteristics of wind speed changes, the output power of wind turbines also changes, and the output power cannot be stabilized. As the proportion of wind power generation increases, it will have a huge impact on the stability of the power grid.

Under the existing wind power generator technology, in order to absorb as much wind power as possible, the grid side needs to be equipped with additional peak-shaving and frequency-regulating power supplies at the same time, which increases the cost of power generation. How to build a grid-friendly wind power generation and storage Energy and output systems to achieve stable output of wind power generation has become a problem to be solved

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