Similarity threshold determination method considering average fluctuation ratios of voltage curves

A similarity threshold and voltage curve technology, applied in the direction of instruments, character and pattern recognition, computer components, etc., can solve problems that do not consider the method of determining the similarity threshold of voltage curves, reduce misjudgments and missed judgments, and improve The effect of accuracy

Active Publication Date: 2020-04-10
STATE GRID HUBEI ELECTRIC POWER RES INST +1
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Problems solved by technology

[0004] Although the above-mentioned patents involve the calculation of curve similarity and the determination method of similarity threshold in text and image recognition, none of them involve the determination method of similarity threshold considering the average fluctuation rate of voltage curve

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  • Similarity threshold determination method considering average fluctuation ratios of voltage curves
  • Similarity threshold determination method considering average fluctuation ratios of voltage curves
  • Similarity threshold determination method considering average fluctuation ratios of voltage curves

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Embodiment Construction

[0040] The technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention.

[0041] see figure 1 , is a schematic flow chart of an embodiment of a method for determining a similarity threshold considering the average fluctuation rate of a voltage curve in the present invention, and the method includes the following steps:

[0042] A. Obtain the relevant data of the distribution transformer, the relevant data of the distribution transformer includes: the corresponding relationship between the 10kV line and the distribution transformer, the name of the distribution transformer, the address code of the distribution transformer, and the outlet voltage data of the distribution transformer;

[0043] B. Perform dimensionality reduction processing on the distribution transformer outlet voltage data obtained in step A. The specific process is as follows:

[0044] The power consumption i...

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Abstract

The invention provides a similarity threshold determination method considering the average fluctuation ratio of voltage curves. The method comprises the following steps of: A, obtaining distribution transformer related data which comprise corresponding relations between a 10kV line and distribution transformers, the names of the distribution transformers, the address codes of the distribution transformers, and the outlet voltage data of the distribution transformers; B, performing dimension reduction processing on the outlet voltage data of the distribution transformers acquired in the step A;C, calculating the average fluctuation ratio of voltage curves according to the outlet voltage data of the distribution transformers subjected to the dimension reduction processing in the step B; D,calculating the similarity of the voltage curves of the transformers of a transformer area under the same 10kV line according to the outlet voltage data of the distribution transformers preprocessed in the step B; and E, grading the similarity thresholds of the voltage curves according to the calculation results in the step C and the step D. By means of the method, the similarity threshold valuesof the voltage curves can be graded, and then the accuracy of similarity judgment is improved.

Description

technical field [0001] The invention relates to the technical field of distribution transformer operation, in particular to a method for determining a similarity threshold considering the average fluctuation rate of voltage curves. Background technique [0002] The distribution network operation data can not only directly reflect the operation status of the distribution network, but also indirectly reflect the line-change relationship of the distribution network. The correctness of the line-change relationship can be judged by calculating the similarity of the voltage curves in the station area. [0003] The Chinese patent with publication number 109492659A (a method for calculating the similarity of curves) quantifies the number of similar position coordinates in the set by calculating the road strength of two curves, and the similarity of two curves is the number of coordinates and the position coordinates of a single curve sum of totals. The Chinese patent with the publi...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/62
CPCG06F18/22Y04S10/50
Inventor 唐泽洋沈煜周少先杨帆王晋陈孝明舒欣胡伟杨志淳雷杨车方毅宿磊严方彬王小亮王文烁蒋伟
Owner STATE GRID HUBEI ELECTRIC POWER RES INST
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