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Method for operating a wind turbine

A technology of wind energy device and control device, which is applied in the direction of wind power generation, circuit device, wind engine control, etc. It can solve the problems of not being able to ensure sufficient protection of the wind energy device, and the protection of the wind energy device, so as to avoid unstable operation conditions, Reduce computing costs and avoid speed-up effects

Inactive Publication Date: 2014-05-28
SEG SCHALTANLAGEN ELEKTRONIK GERATE
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, a disadvantage of this method for operating a wind energy installation is that it protects the grid, but not the wind energy installation
It is also unsatisfactory to operate without power output even in the case of strong fluctuations in the grid voltage, while at the same time not being able to guarantee adequate protection of the wind energy installation

Method used

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  • Method for operating a wind turbine
  • Method for operating a wind turbine
  • Method for operating a wind turbine

Examples

Experimental program
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Embodiment Construction

[0021] figure 1 Firstly, a schematic view of an exemplary embodiment of a wind energy installation according to the invention is shown. The illustrated stator 1 is provided for driving a generator arrangement 2 . A doubly-fed asynchronous machine can preferably be used as generator arrangement 2 . The generator arrangement 2 is able to output real power to a grid 8 with a grid impedance 7 . The grid current output to the grid 8 can be measured by the second measuring device 4 . Furthermore, the stator voltage of the generator arrangement 2 can be detected by means of the first measuring device 3 . The acquired values ​​of the stator voltage and the grid current output to the grid 8 can be transmitted to the control device 5 in a suitable format, for example as analog data or digital data. The control device 5 can have suitable devices for processing the acquired data according to the method according to the invention, which can in particular be a digital processing device....

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Abstract

A method for operating a wind turbine that includes a generator device for outputting electric energy to a network, the generator device having a stator, and a controller device for controlling the generator device. To ensure sufficient protection of the wind turbine even during network fluctuations, a network voltage is determined using a network model at least as a function of a stator voltage measured with a first measuring apparatus and a network power measured with a second measuring apparatus, and the determined network voltage and a predeterminable maximum phase angle present between the stator voltage and network voltage are used to determine the maximum effective power of the wind turbine that can be output, and the output effective power is regulated as a function of the determined maximum effective power that can be output and a target effective power predetermined by the control device.

Description

technical field [0001] The invention relates to a method for operating a wind energy installation having: a generator arrangement for supplying electrical energy to a grid, wherein the generator arrangement comprises a stator; and a control device for controlling the generator arrangement, wherein at least a first The measuring device measures the stator voltage of the generator device and at least via the second measuring device the grid current supplied to the grid. The invention also relates to a computer program and a computer program product for carrying out the method using a processor, to a control device for a generator installation of a wind energy installation, and to a wind energy installation. Background technique [0002] In the prior art it is always desired to output the effective power of the wind energy installation to the grid in an optimized manner and to avoid damage to the grid and the wind energy installation. Especially in the event of voltage disturb...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/46F03D9/00
CPCF03D9/003H02J3/386Y02E10/763F05B2270/337H02J3/46F05B2270/1016Y02E10/723F03D7/0244F03D7/0272F03D7/0284F03D9/255H02J2300/28H02J3/381Y02E10/72Y02E10/76H02J3/472
Inventor 斯特凡·恩格尔哈特安杰伊·热尼尤茨
Owner SEG SCHALTANLAGEN ELEKTRONIK GERATE
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