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Control method for realizing pressure and frequency regulation of wind turbine generator

A technology of voltage regulation, frequency regulation and control method, which is applied in the direction of AC network voltage regulation, wind power generation, electrical components, etc., to achieve the effect of improving stability and easy operation of engineering.

Active Publication Date: 2017-01-11
NARI TECH CO LTD +4
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Problems solved by technology

Most of the original wind turbines do not have this function, so a control method is urgently needed to increase the function of voltage regulation and frequency regulation

Method used

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  • Control method for realizing pressure and frequency regulation of wind turbine generator

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Embodiment Construction

[0017] The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0018] Such as figure 1 As shown, a control method for realizing voltage regulation and frequency regulation of wind turbines is as follows:

[0019] The filtered grid-connected point voltage U g and reference voltage U ref Commonly input the droop control unit of the virtual synchronous machine to get the reactive power increment Q d .

[0020] Increment reactive power by Q d and the reference reactive power Q output by the converter ref Commonly input the maximum reactive power limiting unit of the converter to obtain the reactive current reference value i corresponding to the limited reactive power command qref . Collect the current wind speed v wind and the pitch angle θ 0 , the cu...

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Abstract

The invention discloses a control method for realizing pressure and frequency regulation of wind turbine generator. Based on the control system of original wind power converter, the method adds pressure and frequency regulation ring of droop control and virtual inertial control. The realization of the project is quite simple and easy to operate, to make the wind turbine generator able to provide certain reactive and active power support in state grid fault, which improves stability of the system.

Description

technical field [0001] The invention relates to a control method for realizing voltage regulation and frequency regulation of a wind turbine, and belongs to the field of new energy power generation. Background technique [0002] With the continuous increase of wind power grid-connected scale in recent years, the penetration rate of wind power in the system has been continuously improved, and the requirements for the grid-connected operation of wind turbines have become more and more stringent. In order to improve the stability of the power system, it is necessary for wind turbines to provide reactive power and frequency support for the system like traditional synchronous generators, so as to achieve "friendly" grid connection of wind turbines. Most of the original wind turbines do not have this function, so a control method is urgently needed to increase the function of voltage regulation and frequency regulation. Contents of the invention [0003] In order to solve the a...

Claims

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Application Information

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IPC IPC(8): H02J3/12H02J3/24H02J3/38
CPCH02J3/24H02J3/386Y02E10/76
Inventor 孔祥梅邵宜祥孙素娟瞿兴鸿余良辉
Owner NARI TECH CO LTD
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