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Calculating method of generating power of wind power field

A technology of power generation and calculation method, which is applied in wind power generation, control of wind turbines, monitoring of wind turbines, etc., can solve problems such as excessive errors, and achieve the effect of overcoming excessive errors

Active Publication Date: 2014-10-22
STATE GRID CORP OF CHINA +3
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Problems solved by technology

[0006] Compared with the prior art, the calculation method of wind farm power generation provided by the present invention utilizes EOF decomposition to excavate the commonality and characteristics of each benchmark wind turbine, which can overcome the shortcomings of existing wind farm power generation calculation methods with excessive errors, and accurately estimate wind farm power. The theoretical power generation provides an important reference for evaluating and calculating the economic loss of power cuts or maintenance

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  • Calculating method of generating power of wind power field

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Embodiment Construction

[0008] The technical solution of the present invention will be further described in detail below according to the drawings in the description and in combination with specific embodiments.

[0009] see figure 1 , the method for calculating the generated power of wind farms based on Empirical Orthogonal Function (EOF) provided by the present invention includes the following steps:

[0010] Step S10, perform EOF decomposition on the power sequences of all benchmark fans to obtain the space vector ;

[0011] Step S20, space vector based on EOF decomposition Restore the typical power sequence of each benchmark fan;

[0012] Step S30, proportionally amplify the typical power of each benchmark fan according to the number of start-ups on the corresponding feeder, to obtain the total power of the feeder where the benchmark fan is located ;

[0013] Step S40, superimposing all benchmark wind turbines to obtain the power of the entire wind farm.

[0014] In step S10, based on th...

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Abstract

The invention relates to a calculating method of generating power of a wind power field. The method comprises the following steps: performing experience-based orthogonal function decomposition on power sequences of all mark post blower fans to obtain a space vector Vk; and performing reduction on the space vector Vk to obtain a typical power sequence of each mark post blower fan; according to a power-on number on a corresponding feed line, performing proportional amplification on typical power of each mark post blower fan to obtain total power Ptotal of feed line where the mark post blower fans are located; and superposing all the mark post blower fans to obtain power of the whole wind power field.

Description

technical field [0001] The invention belongs to the field of power system planning, and is especially aimed at a method for calculating the theoretically generateable power of a large-scale wind farm (30MW and above), so as to calculate the power generation of the wind farm in a natural state. Background technique [0002] In recent years, driven by a series of policies in my country, the wind power industry has developed rapidly. It is estimated that by 2015, my country's grid-connected wind power installed capacity will reach 100 million kilowatts. However, limited by factors such as grid transmission capacity and wind power consumption capacity, there are obvious power limitations in actual wind power grid-connected operation projects. At present, the amount of abandoned wind in many power plants is generally calculated according to the theoretical annual power generation of the fan or by the conventional power expansion method, which is very different from the actual am...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q50/06
CPCF03D7/048F03D7/028F05B2260/821F05B2270/335F03D17/00Y02E10/72F03D7/04
Inventor 汪宁渤路亮吕清泉赵龙鲁宗相乔颖
Owner STATE GRID CORP OF CHINA
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