Transformer inrush current detection method and equipment and computer readable storage medium

A technology of detection equipment and detection method, which is applied in computer parts, calculation, neural learning methods, etc., can solve the problems of insufficient accuracy and slow detection speed of the second harmonic method, and achieve high accuracy and fast detection speed , the effect of less sampling points

Pending Publication Date: 2022-02-22
SCHNEIDER ELECTRIC IND SAS
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Problems solved by technology

However, the detection speed of the second harmonic method is slow and the accuracy is not high enough

Method used

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  • Transformer inrush current detection method and equipment and computer readable storage medium
  • Transformer inrush current detection method and equipment and computer readable storage medium
  • Transformer inrush current detection method and equipment and computer readable storage medium

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Embodiment Construction

[0029] Hereinafter, the present disclosure will be described in detail with reference to exemplary embodiments of the present disclosure. However, the present disclosure is not limited to the embodiments described herein, and it may be embodied in many different forms. The described embodiments are only intended to make the present disclosure thorough and complete, and fully convey the concept of the present disclosure to those skilled in the art. Features of the various described embodiments can be combined or substituted for each other, unless explicitly excluded or should be excluded according to the context.

[0030] At present, the method for inrush current detection is mainly the second harmonic method. The principle is to use the phenomenon that the inrush current contains rich second harmonic content to identify the appearance and disappearance of inrush current. When the second harmonic is higher than a certain threshold value , for example, when the ratio between th...

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Abstract

The invention discloses a transformer inrush current detection method and inrush current detection equipment and a computer readable storage medium. The inrush current detection method comprises the following steps: sampling at least one part of a current signal of the transformer to obtain a numerical matrix; providing the numerical matrix as an input to an inrush current detection neural network; and calculating and outputting a tag vector corresponding to the numerical matrix by the inrush current detection neural network, wherein the tag vector indicates whether the current signal is inrush current or not.

Description

technical field [0001] The present disclosure relates to a transformer inrush detection method and equipment, and more particularly, to a transformer inrush detection method, an inrush detection device, and a computer-readable storage medium. Background technique [0002] The large current that occurs during power-on of the transformer is called inrush current. The inrush current is the current generated when the voltage on the side connected to the power supply creates a magnetic field in the transformer core, and no such current occurs on the side not connected to the power supply. The maximum peak value of the inrush current can reach 6-8 times of its rated current, and the duration can be as long as 10 seconds. The relay protection must avoid action at this time, otherwise the transformer will not be able to be powered on successfully, that is, it will not be able to enter the voltage state connected to the power supply from the non-voltage state when the power supply i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00G01R19/00G06N3/04G06N3/063G06N3/08G06K9/62
CPCG01R31/00G01R19/00G06N3/063G06N3/084G06N3/045G06F18/214G01R19/16547H02H1/0092H02H1/043H02J13/0004H02J13/00034G01R19/0092G06N3/04H01H47/002
Inventor 任睿曹宇李容
Owner SCHNEIDER ELECTRIC IND SAS
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