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Switch cabinet fault feature selection method and apparatus

A technology of fault characteristics and switchgear, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problems of failure to identify fault characteristics, inconvenient diagnosis and maintenance work, etc., to reduce the amount of calculation, improve the effect, improve The effect of goodness of fit

Active Publication Date: 2015-11-25
ZHEJIANG TRULY ELECTRIC +4
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Problems solved by technology

[0003] However, the existing technology is still unable to accurately and effectively identify the corresponding fault characteristics when the switchgear fails, which causes great inconvenience to the subsequent diagnosis and maintenance work

Method used

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  • Switch cabinet fault feature selection method and apparatus
  • Switch cabinet fault feature selection method and apparatus
  • Switch cabinet fault feature selection method and apparatus

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Embodiment Construction

[0048] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0049] The embodiment of the invention discloses a method for selecting fault characteristics of a switch cabinet, see figure 1 As shown, the method includes:

[0050] Step S11: Extract a fault feature set from the switchgear in which the fault occurs, the fault feature set includes M samples, and each sample includes N fault features, where M and N are both positive integers;

[0051] Step S12: Based on the ranking principle of the importan...

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Abstract

The application discloses a switch cabinet fault feature selection method and apparatus. The method comprises: based on a sorting principle of importance degree of fault features, performing sorting on N fault features of a fault feature set to obtain to-be-selected fault feature subsets; based on mRMR criterions, performing screening on the to-be-selected fault feature subsets with an increment search method; and calculating the classification accuracy of each candidate fault feature subset in N candidate fault feature subsets obtained after screening, and determining the candidate fault feature subset with highest classification accuracy as an optimal candidate fault feature subset. According to the switch cabinet fault feature selection method and apparatus, the fault features in the fault feature set are sorted in advance, so that the dimension reduction of the fault features is realized; and then the screening is performed based on the mRNR criterions, so that noise components in a fault feature sample are effectively reduced, the feature dimensions are further reduced, the screening effect is improved, and the degree of matching between the subsequently obtained optimal fault feature subset and an actual fault reason is increased.

Description

Technical field [0001] The invention relates to the technical field of intelligent power distribution automation, in particular to a method and device for selecting fault characteristics of a switch cabinet. Background technique [0002] At present, there are many types of faults in power distribution cabinets, and there are many corresponding fault characteristics, including insulation faults, mechanical faults, temperature rise faults, and arc faults in switch cabinets. [0003] However, the prior art still cannot accurately and effectively identify the corresponding fault characteristics when the switchgear fails, which causes great inconvenience to the subsequent diagnosis and maintenance work. [0004] In summary, it can be seen that how to accurately and effectively identify the corresponding fault characteristics when the switchgear fails is a problem to be solved urgently. Summary of the invention [0005] In view of this, the purpose of the present invention is to provide a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00
Inventor 刘理峰张静李题印胡翔孙微庭易武王丽芳周念成崔金栋
Owner ZHEJIANG TRULY ELECTRIC
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