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Wind power plant modeling method based on actually-measured operating data

A technology of operating data and modeling methods, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve problems such as destroying data distribution, dividing result errors, and reducing the quality of data analysis

Active Publication Date: 2014-07-23
GRID POWER PLANNING & RES CENT OF GUANGDONG GRID POWER CO LTD
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Problems solved by technology

[0004] When measuring wind farm operating data, some noise data may be generated due to the defects of the measurement system and some human factors. This type of data does not provide meaningful knowledge, and it will also destroy the distribution of data and reduce the quality of data analysis. ; On the other hand, in the process of group clustering division, the selection of the initial clustering center is very important. If the selection is improper, it is easy to fall into the local optimal solution, which will cause a large error in the division result

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  • Wind power plant modeling method based on actually-measured operating data
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  • Wind power plant modeling method based on actually-measured operating data

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Embodiment Construction

[0057] The wind farm modeling method based on the measured operation data proposed by the present invention, the specific flow chart is as follows figure 1 shown. The method is characterized by comprising the following steps:

[0058] Step 1: Noise data processing of wind farm measured operating data;

[0059] Step 2: Cluster center initialization optimization process;

[0060] Step 3: cluster division;

[0061] Step 4: Establish a multi-machine representation model of the wind farm;

[0062] In the step 1, the noise data processing process of the wind farm actual measurement operation data is as follows:

[0063] Assuming that there are n wind turbines in the wind farm, the measured operation data of the wind turbines connected to the grid in the wind farm during this period of time are selected as samples. The measured operation data can include wind speed, active power, reactive power, etc. The number of sampling points of the measured data in this period is t, and the...

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Abstract

The invention relates to a wind power plant modeling method based on actually-measured operating data. According to the method, with the actually-measured operating data of a wind power plant as the criterion, group classification is carried out on units in the wind power plant, units with adjacent operating points are classified into the same group, equivalence is carried out on each group through a wind generation set, and then a multi-unit representation model of the wind power plant is established. In the group classification process, outlier data processing is carried out on noisy data in the actually-measured operating data of the wind power plant based on the definition and properties of entropy in the information theory so as to reduce interference of the noisy data. Furthermore, in the group classification process, the cluster center initialization process is optimized, the group clustering quality is improved, and the accuracy of the wind power plant model established through the method is greatly improved.

Description

technical field [0001] The invention relates to a wind farm modeling method based on measured operating data. Background technique [0002] With the increasingly serious energy crisis and environmental pollution, wind power generation is highly valued by countries all over the world. With the development of wind power generation and grid-connected technology, scholars at home and abroad are paying more and more attention to wind power research. An accurate and reasonable wind turbine model is the key to the simulation study of wind power in the power system, and it is also the basis for other in-depth research. [0003] The traditional wind farm modeling method assumes that all wind turbines have the same or little difference in operating conditions, and a single wind turbine is used to represent the entire wind farm. However, due to the influence of many factors such as wind speed distribution, topography, and unit arrangement in the wind farm, there may be large differenc...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 余梦泽潘险险丁伯剑朱浩骏史正军赵双张凌云林莉
Owner GRID POWER PLANNING & RES CENT OF GUANGDONG GRID POWER CO LTD
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