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Method for detecting parameters of double-fed wind generating set

A doubly-fed wind power generation and wind turbine technology, applied in the direction of motor generator testing, etc., can solve problems such as difficulty in ensuring the stability of the solution, slow solution speed, and complex solution, avoiding errors, ensuring convergence, Comprehensive effect of key parameters

Active Publication Date: 2015-01-21
STATE GRID CORP OF CHINA +3
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Problems solved by technology

The online detection method generally regards the doubly-fed motor as a nonlinear system, which is not only complicated and slow to solve, but also difficult to guarantee the stability of the solution in engineering applications

Method used

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  • Method for detecting parameters of double-fed wind generating set
  • Method for detecting parameters of double-fed wind generating set
  • Method for detecting parameters of double-fed wind generating set

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Embodiment Construction

[0036]Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0037] figure 1 It shows the connection schematic diagram of the doubly-fed wind turbine connected to the grid, in which the stator end of the doubly-fed wind turbine is connected to the grid, the rotor is connected to the grid through the converter, and the converter controller is connected to the main controller of the wind turbine connected. The key parameters of the doubly-fed wind turbine in this embodiment include direct mining parameters and non-direct mining parameters;

[0038] The direct sampling parameters refer to th...

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Abstract

The invention provides a method for detecting the parameters of a double-fed wind generating set. The method includes the steps that first, the double-fed wind generating set is connected into a power grid for generating electricity, and a voltage signal and a current signal of the double-fed wind generating set are collected through wave recording equipment; second, a master controller of the wind generating set is used for collecting the wind direction, the wind speed, the pitch angle, the generator speed, the generator torque and a master control low voltage ride-through signal; a converter controller is used for collecting a converter low voltage ride-through signal, a converter Chopper actuating signal and a converter Crowbar actuating signal; third, the equivalent parameter and the low voltage ride-through response delay time of a double-fed wind generator are acquired according to the current signal and the voltage signal. Compared with the prior art, by means of the method for detecting the parameters of the double-fed wind generating set, errors caused by an experimental platform which is composed of parts of devices are avoided, the reciprocal influence of the double-fed wind generating set and the power grid can be reflected, and the detection method is high in operability, simple and practical.

Description

technical field [0001] The invention relates to a parameter detection method of a generator, in particular to a parameter detection method of a double-fed wind power generating set. Background technique [0002] As the penetration rate of wind power in the grid continues to increase, its impact on the grid is also increasing. Therefore, wind turbines not only need to pay attention to their own performance, but also need to improve the electrical performance of the grid involved in order to maintain the safe and stable operation of the grid. Focusing on the grid-related electrical performance of doubly-fed wind turbines, it is necessary to measure and identify its key parameters, so as to provide measured data input and experimental support for related research and evaluation work. [0003] In the prior art, the parameters of wind turbines are usually tested on an experimental platform based on some components of wind turbines. This method can simplify experimental condition...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/34
Inventor 陈子瑜李庆陈晨秦世耀赵宏博朱琼锋贺敬王莹莹张梅张元栋张利唐建芳
Owner STATE GRID CORP OF CHINA
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