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Wind power plant equivalent modeling method based on real-time operation data

A real-time operation and equivalent modeling technology, applied in the field of value model, can solve the problem of large equivalent error and achieve the effect of small error

Inactive Publication Date: 2013-07-24
DALI POWER SUPPLY BUREAU YUNNAN POWER GRID
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Problems solved by technology

The existing equivalence method does not analyze the real-time operation data in combination with the operation characteristics of the wind turbine, and the equivalence error is generally relatively large for some mountainous wind farms with uneven terrain

Method used

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  • Wind power plant equivalent modeling method based on real-time operation data
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  • Wind power plant equivalent modeling method based on real-time operation data

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Embodiment Construction

[0023] A wind farm equivalent modeling method based on real-time operation data, the steps of the present invention include:

[0024] (1) Using the coherence equivalent method and using the support vector machine to divide the unit into coherent groups;

[0025] (2) Determine two important elements of the support vector machine: support vector and kernel function;

[0026] (3) Process the data at multiple sampling times, count the number of occurrences of each type of fleet number, and obtain the preliminary results of the coherent group division of the unit;

[0027] (4) Combined with the geographical location information of the wind farm, the final result of the coherence group division is given;

[0028] (5) Select another set of sampling data to verify the above results. The characteristics of each monsoon, that is, the difference between the large and small wind patterns, will result in different homology group division results;

[0029] (6) When calculating the equival...

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Abstract

The invention relates to a wind power plant equivalent modeling method based on real-time operation data. The physical quantity can be measured through analysis of operational characteristics of a wind power plant and a real-time monitoring system, support vectors which determine unit operating states are extracted and input in a support vector machine, a unit is divided into four classes by building a new kernel function, and preliminary grouping of the unit is completed. Homology groups of all units are determined by combining geographical location information of the wind power plant to divide final results. By means of the wind power plant equivalent modeling method, a detailed model figure and an equivalent model figure are constructed in simulation software, and equivalent errors are analyzed. Compared with a traditional single-machine equivalent method, the equivalent method provided by the wind power plant equivalent modeling method is small in error, and can meet actual requirements of engineering.

Description

technical field [0001] The invention belongs to the technical field of wind farm operation and planning, and specifically introduces a wind farm equivalent model applicable to various occasions. Background technique [0002] With the construction and operation of more and more large-capacity wind farms, the proportion of wind power in my country's power system will gradually increase, and the interaction and influence between large-capacity wind farms and the power system will also increase accordingly. How to accurately analyze the influence of wind farms on the dynamic and transient operation characteristics of the grid and the transient operation performance of wind farms under grid faults is very important. The research on equivalent modeling of wind farms is the basis for analyzing the above problems. For large-scale wind farms, if a detailed model is used to calculate the dynamic and transient characteristics of large-capacity wind farm grid-connected operation, itera...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00G06F17/50
CPCY02E60/76Y04S40/22Y02E60/00
Inventor 袁蓉章汉军周荣虎赵成强仇跃东熊西林苏沛轩刘进兴胡祖伟黄滇生杨文波
Owner DALI POWER SUPPLY BUREAU YUNNAN POWER GRID
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