Wind power generation system and operation control method thereof

A wind power generation system and operation control technology, which is applied in the control of wind turbines, generator control circuits, wind power generation, etc., can solve the problems of exceeding the AC voltage of the converter, large slip, and the inability of the wind power generation system to operate, etc. Achieve the effect of improving utilization rate and increasing power generation

CN113178888AActive Publication Date: 2021-07-27SHANGHAI ELECTRIC WIND POWER GRP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2021-07-27

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Abstract

The embodiment of the invention provides a wind power generation system and an operation control method thereof. The wind power generation system comprises a generator and a converter, the generator comprises a stator and a rotor, the stator is connected to a power grid through a stator grid-connected circuit breaker, the rotor is connected to the power grid through the converter, and the converter comprises a machine-side converter and a grid-side converter. The method comprises the steps that before the wind speed reaches the wind speed capable of generating power, a wind power generation system is controlled to enter a small wind shutdown mode; when the wind speed reaches the power generation wind speed and does not exceed the first wind speed, the wind power generation system is controlled to operate in a first operation mode; when the wind speed exceeds the first wind speed, the wind power generation system is controlled to operate in a second operation mode; when the wind speed is in the second wind speed interval, the wind power generation system is controlled to operate in a third operation mode, and the first wind speed is smaller than the second wind speed interval; and when the wind speed exceeds the second wind speed interval, the wind power generation system is controlled to operate in the second operation mode, and therefore the utilization rate of wind energy can be increased.
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Description

technical field

[0001] The embodiments of the present invention relate to the technical field of wind power, and in particular to a wind power generation system and an operation control method thereof. Background technique

[0002] With the gradual depletion of energy sources such as coal and oil, human beings pay more and more attention to the utilization of renewable energy. As a clean and renewable energy, wind energy has been paid more and more attention by countries all over the world. For coastal islands, grasslands, pastoral areas, mountainous and plateau areas that lack water, fuel, and inconvenient transportation, the use of wind power generation according to local conditions is very suitable and promising.

[0003] A wind power generation system is an energy conversion system that converts wind energy into electrical energy through a generator. There are various types of generators, among which doubly-fed generators occupy a large proportion in wind power generat...

Examples

Embodiment Construction

[0015] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. Embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of means consistent with aspects of the invention as recited in the appended claims.

[0016] The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. Unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present invention shall have the usual meanings understood by those skilled in the field of the present invention. "First", "second" and similar wo...