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A Harmonic Responsibility Classification Method Based on AP Clustering Data Screening

A technology of AP clustering and data screening, which can be used in measuring devices, instruments, measuring electricity, etc., and can solve problems such as low accuracy

Active Publication Date: 2018-03-27
YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention provides a harmonic responsibility division method based on AP clustering data screening to solve the problem of low accuracy of the harmonic responsibility division method in the prior art

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  • A Harmonic Responsibility Classification Method Based on AP Clustering Data Screening
  • A Harmonic Responsibility Classification Method Based on AP Clustering Data Screening
  • A Harmonic Responsibility Classification Method Based on AP Clustering Data Screening

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Embodiment Construction

[0027] The exemplary embodiments will be described in detail here, and examples thereof are shown in the accompanying drawings. When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all implementation manners consistent with the present invention. On the contrary, they are merely examples of devices consistent with some aspects of the invention as detailed in the appended claims.

[0028] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments.

[0029] Please refer to figure 1 , Which shows a method flow chart of a method for harmonic responsibility division based on AP clustering...

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Abstract

The invention provides a harmonic duty allocation method based on AP cluster data screening, and the method employs an AP clustering method. Through the clustering of harmonic impedance at a PCC place, the method finally achieves the estimation of system-side harmonic impedance through employing a person correlation coefficient and the sign symbol of estimated harmonic impedance, thereby achieving the harmonic duty allocation. The AP clustering method does not need to define a class number in advance, continuously searches proper clustering centers in an iteration process, automatically recognizes the positions and number of the class centers from data points, and enables the sum of the similarity of all data points to the nearest class representation point to be the greatest. In the beginning, the AP clustering method takes all the data points as the class centers, and achieves the clustering process through the information transmission among the data points. The AP clustering method is a deterministic clustering algorithm, and clustering results of a plurality of independent operations are very stable.

Description

Technical field [0001] The invention relates to the technical field of harmonic source positioning at public connection points of power grids, and in particular to a method for dividing harmonic responsibility based on AP clustering data screening. Background technique [0002] Harmonic problems are an important aspect of power quality problems. With the development of power electronic technology, non-linear devices developed on the basis of various power electronic technologies, such as rectifiers, inverters and various switching power supplies, have rapidly become popular and widely used. These non-linear devices inject a large amount of harmonic currents into the power grid, causing serious distortions in the voltage and current in the power grid. The degree of harm of harmonics mainly depends on factors such as the magnitude of harmonics and site conditions. For example, harmonics cause power cable capacity to decrease, loss increase, aging increase, leakage current increas...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/08
CPCG01R31/088
Inventor 郭成王辉刘炜李胜男覃日升赵泽平段锐敏
Owner YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST
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