Calculation method for calculating available capacity of wind power plant

A technology with effective capacity and calculation method, applied in the direction of calculation, electrical digital data processing, special data processing application, etc., can solve the problem of lack of actual measurement data verification process of the model and so on

Inactive Publication Date: 2015-09-23
CHINA THREE GORGES UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the calculation of the effective capacity of wind farms at home and abroad is calculated through theoretical derivation and establishment of models, and such models lack the verification process of measured data

Method used

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  • Calculation method for calculating available capacity of wind power plant
  • Calculation method for calculating available capacity of wind power plant
  • Calculation method for calculating available capacity of wind power plant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0069] The annual wind speed data of a wind farm in the first year and the second year, the data sampling interval is 10 minutes. The parameters of a single fan in the wind farm are: v in =3m / s, v out =25m / s, v R =11m / s,P WR = 2500kW. The results obtained by applying this method are as follows: figure 2 shown. The probability distribution of each active output segment can be intuitively reflected from the figure.

[0070] Table 1 Fitting results of each function model

[0071] function type

SSE

R-square

MAE

RMSE

Six-dimensional Gaussian distribution

0.0002603

0.9988

0.0211

0.002852

beta distribution

0.01928

0.9145

0.1579

0.02195

Weibull distribution

0.002133

0.9905

0.0089

0.006737

Rayleigh distribution

0.0003399

0.9942

0.0029

0.005566

[0072] After further comparison, it was found that among all the above fitting experiments, the six-dimensional ...

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Abstract

The invention discloses a calculation method for calculating the available capacity of a wind power plant, and belongs to the field of electric power system planning and design. The calculation method mainly comprises the following steps: selecting sample data and performing data preprocessing; carrying out statistical calculation on the active power output probability of each power output segment within a certain time scale; fitting a continuous function curve of each function model based on various function models with a maximum likelihood estimation or least square fitting method; and evaluating the goodness of fit of the fitted curves with a goodness of fit evaluation index, selecting an optimal fitting model, and performing generalization performance examination. As proved by a result, a model established by the method has high generalization performance, and the calculated available capacity curve accuracy of the wind power plant is high.

Description

technical field [0001] The invention relates to a calculation method for calculating the effective capacity of a wind farm, which relates to the field of wind farm capacity calculation. Background technique [0002] In recent years, the global wind power industry has developed rapidly, and the proportion of the total installed capacity of wind power in the power grid has been increasing. However, the intermittent and random characteristics of wind power output will increase the uncertainty of power system operation and bring difficulties to the planning and construction of wind farms. The concept of effective capacity is proposed in view of the technical specifications related to the above impacts. The calculation of effective capacity can provide technical reference for the planning and design of wind farms, which is of great significance to engineering practice. [0003] At present, the calculation of the effective capacity of wind farms at home and abroad is based on the...

Claims

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Application Information

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IPC IPC(8): G06F19/00G06Q50/06
Inventor 杨楠
Owner CHINA THREE GORGES UNIV
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