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Modeling method for electromechanical transient model of doubly-fed wind power generator set

A technology of wind turbines and modeling methods, applied in the direction of electrical digital data processing, data processing applications, instruments, etc., can solve problems such as complexity, slow calculation speed, and poor numerical convergence

Active Publication Date: 2014-07-30
STATE GRID CORP OF CHINA +3
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Problems solved by technology

The above models are all based on the electromagnetic transient model for modeling and simulation. When used for analysis and calculation of the impact of large-scale wind farm access systems, they are relatively complex, with slow calculation speed and poor numerical convergence.

Method used

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  • Modeling method for electromechanical transient model of doubly-fed wind power generator set
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  • Modeling method for electromechanical transient model of doubly-fed wind power generator set

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Embodiment

[0187] In order to verify the correctness of the built model, the present invention builds a doubly-fed wind turbine electromechanical transient model under the environment of the power system simulation software PSASP. In the PSASP simulation program, the actual system of the Northwest 2013 power grid was built to simulate the operating conditions of the doubly-fed wind turbine under the disturbance test. Finally, the simulation results were compared with the measured curves of doubly-fed wind turbines from different manufacturers.

[0188] Working condition 1: 800,000 units of large wind power disturbance test in the Jiuquan area of ​​Northwest China, the comparison results of the wave recording and the simulation curve of a single Sinovel (Guotong) double-fed wind turbine unit are as follows Figure 14 , 15 , 16 shown.

[0189] Working condition 2: 400,000 units of large wind power disturbance test in Jiuquan area of ​​Northwest China, the comparison results of the wave r...

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Abstract

The invention provides a modeling method for an electromechanical transient model of a doubly-fed wind power generator set. From a practical physical device, through a reasonable hypothesis, the electromechanical transient model of the doubly-fed wind power generator set is simplified, and meanwhile, the dynamic process and low-voltage passing characteristics of direct current voltage of a frequency changer are considered. Simulation results show that a simulation curve of the model is consistent to the low-voltage passing actually measured curve of the doubly-fed wind power generator set, the results are accurate and reliable, and the modeling method is used for analyzing the influence of wind power field connection of the large-scale doubly-fed wind power generator set on the transient stability of an electric power system.

Description

technical field [0001] The invention relates to a modeling method, in particular to a modeling method for an electromechanical transient model of a doubly-fed wind power generating set. Background technique [0002] The two most widely used types of wind turbines are double-fed wind turbines and direct-drive wind turbines. Now there is a misunderstanding in the market that direct drive technology is a new technology, while double-fed technology is a traditional technology. In fact, judging from the birth time, double-fed and direct-drive technologies appeared almost at the same time, and even direct-drive technology appeared earlier than double-fed technology. But so far, doubly-fed technology has occupied a large market share because of its stable operation. The capacity of the converter of the doubly-fed generator is only 1 / 3 of its larger capacity in structure, which reduces the cost of the converter. At the same time, the filter inductance and support capacitor on the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50G06Q50/06
CPCY04S10/50
Inventor 安宁邓丽君邵广惠訾鹏黄鸣宇赵铮徐兴伟尹亮侯凯元梁亚波夏德明岳涵
Owner STATE GRID CORP OF CHINA
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