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High-order-moment based generated power estimation method and system

A technology of generating power and high-order moment, which is applied in computing, electrical digital data processing, special data processing applications, etc.

Active Publication Date: 2014-10-08
CHINA AGRI UNIV
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Problems solved by technology

However, this method only performs equidistant sampling for continuous uncertain state quantities (wind speed, light intensity), and the limited number of states cannot accurately reflect the actual situation.
Moreover, the eigenvalues ​​of the probability density function of this method are generally calculated approximately, and the obtained results deviate greatly from the actual values.

Method used

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  • High-order-moment based generated power estimation method and system
  • High-order-moment based generated power estimation method and system
  • High-order-moment based generated power estimation method and system

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Embodiment Construction

[0036] The specific implementation manners of the present invention will be further described below in conjunction with the drawings and examples. The following examples are only used to illustrate the technical solutions of the present invention more clearly, but not to limit the protection scope of the present invention.

[0037] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings. The following examples serve to illustrate the present invention, but do not limit the scope of the present invention.

[0038] Embodiments of the present invention provide a method for estimating generated power based on higher-order moments, such as figure 1 As shown, the method includes:

[0039] Step S1, generate a plurality of sampling sample groups, and determine the sampling sample group with the smallest characteristic deviation value f from the original time series data; wherein,

[0040] ...

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Abstract

The invention provides a high-order-moment based generated power estimation method and system. The high-order-moment based generated power estimation method comprises the steps as follows: a plurality of sample groups are generated, one sample group which has the smallest characteristic deviation value f with original time series data is determined, wind speed data is simulated according to a wind speed Weibull probability distribution function corresponding to the determined sample group, and generated power is estimated according to the simulated wind speed data. According to the provided generated power estimation method, the accuracy degree for power estimation of wind power generation or photovoltaic power generation can be increased.

Description

technical field [0001] The invention relates to the field of energy technology, in particular to a method and system for estimating generated power based on high-order moments. Background technique [0002] With the increasing problems of energy depletion and environmental pollution, distributed power generation using renewable energy such as wind and light as primary energy has become the research focus and cutting-edge technology in the field of power engineering and energy. Distributed power generation such as wind power and photovoltaics Large-scale grid connection will make power system planning and design, economic and safe operation face severe challenges. Natural resources such as wind and light have timing, volatility and randomness, which makes the power generation of distributed power generation intermittent. In order to deeply study the impact of wind power, photovoltaic and other distributed power grid-connected on the power system, the intermittence of wind po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00
Inventor 唐巍闫涛张璐丛鹏伟杨德昌
Owner CHINA AGRI UNIV
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