Distributed photovoltaic acquisition point distribution and estimation optimization method based on credible nodes

A distributed photovoltaic and optimization method technology, applied in digital transmission systems, electrical components, transmission systems, etc., can solve the problems of complex calculation methods, waste of sampling resources, complex and time-consuming calculations, etc., to ensure calculation accuracy and improve operation efficiency , the effect of reducing the computational complexity

Active Publication Date: 2020-02-04
EAST CHINA BRANCH OF STATE GRID CORP +1
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  • Abstract
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  • Application Information

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Problems solved by technology

Although this method can estimate the output of distributed photovoltaic nodes, this method not only needs to rely on meteorological monitoring equipment, but also collects the panel temperature and solar radiation values ​​of virtual centralized photovoltaic nodes, and also predicts solar irradiance and temperature value, there are problems that require additional meteorological monitoring equipment and have complex calculation methods
The other is a distributed photovoltaic irradiance measurement and distribution method based on compressed sensing technology. The technology sparsely optimizes the polynomial model between the overall output of photovoltaics and the irradiance of each photovoltaic power station in the area, and selects the most representative photovoltaic power station layout measurement. Although this method can reduce redundant measurement points, the compressive sensing technology In practical applications, not only a large amount of data needs to be collected, but also a large amount of sampling resources are wasted in the compression process, and the calculation is complex and time-consuming

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  • Distributed photovoltaic acquisition point distribution and estimation optimization method based on credible nodes
  • Distributed photovoltaic acquisition point distribution and estimation optimization method based on credible nodes
  • Distributed photovoltaic acquisition point distribution and estimation optimization method based on credible nodes

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Embodiment 1

[0068] In the following, a trusted node-based distributed photovoltaic collection distribution and estimation optimization method proposed by the present invention will be described in detail by planning M measurement photovoltaic nodes in an area with a total of N distributed photovoltaic nodes. as attached figure 1 The method shown comprises the steps of,

[0069] S100: Calculate the similarity between each photovoltaic node according to the static data of the distributed photovoltaic nodes in the region;

[0070] S200: Take the M measured photovoltaic nodes in the area as trusted photovoltaic nodes, set their diagonal similarity s(i,i)=V, and set the other N-M photovoltaic nodes as non-measured photovoltaic nodes, set their diagonal similarity Similarity s(i, i)=0, where N is the total number of photovoltaic nodes in the area, M≤N, 1≤i≤N, V>0;

[0071] S300: According to the similarity, with the measured photovoltaic node as the center point, group the non-measured photov...

Embodiment 2

[0102] This embodiment provides a distributed photovoltaic collection layout and output estimation system, as shown in the attached Figure 5 As shown, the distributed photovoltaic collection and distribution and output estimation system includes,

[0103] Similarity calculation unit 100: used to calculate the similarity between each photovoltaic node according to the static data of the distributed photovoltaic nodes in the area;

[0104] Measurement node selection unit 200: Initially, trustworthy nodes in the area are used as measurement nodes, and other photovoltaic nodes are set as non-measurement photovoltaic nodes;

[0105] Node grouping unit 300: used to group non-measured photovoltaic nodes with the measured photovoltaic node as the center point according to the similarity, and to calculate the comprehensive deviation in the region;

[0106] Grouping decision unit 400: used to judge whether the comprehensive deviation is less than the error threshold, if not, used to t...

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Abstract

The invention provides a distributed photovoltaic acquisition point distribution and estimation optimization method based on credible nodes, and the method comprises the following steps: calculating the similarity between photovoltaic nodes according to the static data of the distributed photovoltaic nodes in a region; selecting a known credible photovoltaic node as a measurement photovoltaic node, and grouping non-measurement photovoltaic nodes by taking the measurement photovoltaic node as a center according to the similarity; and estimating the output of the non-measurement photovoltaic node according to the actual output, the similarity and the installed capacity of the measurement photovoltaic node. According to the distributed photovoltaic acquisition point distribution and estimation optimization method and system based on credible nodes, the optimal layout of the measurement photovoltaic nodes of the distributed photovoltaic nodes based on the credible photovoltaic nodes is given, the actual output of the measurement photovoltaic nodes and the real-time estimation algorithm of other non-measurement photovoltaic nodes are considered, and the real-time output of the non-measurement photovoltaic nodes in the area can be effectively estimated in real time.

Description

technical field [0001] The invention belongs to the technical field of photovoltaic power generation, and in particular relates to a trusted node-based distributed photovoltaic collection distribution and estimation optimization method. Background technique [0002] With the limitations of conventional energy such as coal, oil, and natural gas and the increasingly prominent environmental problems, new energy sources that are clean, environmentally friendly and renewable have attracted more and more attention. The development of the new energy industry is not only an effective supplement to the entire energy supply system, but also an important measure for environmental governance and ecological protection, and is the ultimate energy choice to meet the sustainable development of human society. Among them, solar energy, which has many advantages such as clean and environmental protection, no pollution, high utilization value and no shortage of resources, has an irreplaceable p...

Claims

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Application Information

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IPC IPC(8): H04L12/24H04L29/08
CPCH04L41/0823H04L41/0893H04L67/025H04L67/12H04L67/1097
Inventor 陆建宇叶海侯勇何星刘拥军王利锋方兴其胡蓉胡朝阳李珂
Owner EAST CHINA BRANCH OF STATE GRID CORP
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