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Modeling method of photovoltaic output random model reflecting solar radiation intensity variation characteristics

A technology of solar radiation intensity and stochastic model, which is applied in photovoltaic power generation, sustainable buildings, climate sustainability, etc., can solve the problem that it is difficult to obtain cloud layer change data, cloud layer solar radiation intensity attenuation impact data, cloud state transition diagram is complex, Issues such as lack of historical statistics

Inactive Publication Date: 2014-12-17
STATE GRID CORP OF CHINA +2
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Problems solved by technology

However, in the planning stage of photovoltaic power plants, there is usually a lack of historical statistical data for many years, and it is difficult to obtain local cloud layer change data and data on the attenuation effect of clouds on solar radiation intensity, and the state transition diagram of clouds is also very complicated.

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  • Modeling method of photovoltaic output random model reflecting solar radiation intensity variation characteristics
  • Modeling method of photovoltaic output random model reflecting solar radiation intensity variation characteristics
  • Modeling method of photovoltaic output random model reflecting solar radiation intensity variation characteristics

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Embodiment Construction

[0064] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0065] The present invention provides a photovoltaic output stochastic model modeling method reflecting the variation characteristics of solar radiation intensity, said method comprising the following steps:

[0066] Step 1: Determine the variation characteristics of solar radiation intensity;

[0067] Step 2: Establish a solar radiation intensity model considering the variation characteristics of solar radiation intensity;

[0068] Step 3: Establish a photovoltaic array output power model.

[0069] In the step 1, the variation characteristics of solar radiation intensity are divided into annual variation characteristics of solar radiation intensity and daily variation characteristics of solar radiation intensity.

[0070] The intensity of solar radiation received by the Earth's surface depends on the position of the Sun relative to the Earth, the altitude ...

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Abstract

The invention provides a modeling method of a photovoltaic output random model reflecting solar radiation intensity variation characteristics. The method includes: determining the solar radiation intensity variation characteristics; building a solar radiation intensity model considering the solar radiation intensity variation characteristics; building a photovoltaic array output power model. The photovoltaic model built by the method can reflect the regularity of the photovoltaic output changing along with season change and day-night alternation and reflect fluctuation and uncertainty, caused by influence factors such as weather, of the photovoltaic output, and the photovoltaic output is allowed to conform to actual conditions.

Description

technical field [0001] The invention relates to a modeling method, in particular to a photovoltaic output stochastic model modeling method reflecting the variation characteristics of solar radiation intensity. Background technique [0002] In the past 20 to 30 years, the intermittent renewable energy power generation technology represented by photovoltaic power generation has continued to develop rapidly, and the installed capacity has increased year by year. The output of intermittent power supply has obvious fluctuations and uncertainties. After large-scale grid connection, it brings more uncertain factors to the power system. and economics have an important impact. The output model of intermittent power supply is an important basis for research on related issues, so it is urgent to conduct in-depth research on the output model of intermittent power supply. [0003] The output of photovoltaic power generation is closely related to factors such as the intensity of solar r...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00H02J3/38
CPCY02B10/10Y02E10/56
Inventor 梁双黄峰黄镔朱宁张东霞梁才浩曾平良秦晓晖
Owner STATE GRID CORP OF CHINA
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