Double-fed wind power generation system and converter and power control method thereof

Abstract

The invention provides a doubly-fed wind power generation system and a converter and a power control method thereof, and the method mainly comprises the steps: dynamically adjusting the active current outputted by a converter according to the net on-grid power of a doubly-fed wind power generation system and the given power of a main controller of a fan of the doubly-fed wind power generation system; realizing closed-loop tracking control over the net on-grid power of the doubly-fed wind power generation system and the given power of the fan main controller, and ensuring that the net on-grid power is the power issued by the main controller; the influence of self-consumption fluctuation of a unit on the net on-grid power is reduced, the influence on a power grid is avoided, and meanwhile the system cost is reduced.

Description

technical field [0001] The invention relates to the technical field of wind power generation, in particular to a doubly-fed wind power generation system, a converter and a power control method thereof. Background technique [0002] As a clean, abundant, and renewable energy, wind power has been increasingly valued by all walks of life, especially in recent years, and has developed rapidly. At present, doubly-fed wind power technology is one of the most widely used wind power technologies. [0003] The net on-grid power of a wind power generation system unit is generally determined by the power generated by the converter and the self-consumption of the unit. In the prior art, the converter calculates The power generated by the main controller of the wind turbine, and then realize the closed-loop tracking of the given power by its own power generation; however, because the self-consumption of the unit has been fluctuating, its net grid power has been fluctuating, which in turn...

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Problems solved by technology

[0003] The net on-grid power of a wind power generation system unit is generally determined by the power generated by the converter and the self-consumption of the unit. In the prior art, the converter calculates The power generated by the main controller of the wind turbine, and then realize the closed-loop tracking of the given power by its own power generation; however, because the self-consumption of the unit has been fluctuating, its net grid power has been fluctuating, which in turn has an impact on the power grid

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