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Electric appliance fault detection method and system

A technology of fault detection and electrical appliances, which is applied in the direction of instruments, measuring electricity, measuring devices, etc.

Inactive Publication Date: 2018-08-28
OCEAN UNIV OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The invention provides a method and system for detecting electrical faults to solve the problem of how to detect electrical faults of users

Method used

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  • Electric appliance fault detection method and system
  • Electric appliance fault detection method and system
  • Electric appliance fault detection method and system

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Embodiment Construction

[0052] Exemplary embodiments of the present invention will now be described with reference to the drawings; however, the present invention may be embodied in many different forms and are not limited to the embodiments described herein, which are provided for the purpose of exhaustively and completely disclosing the present invention. invention and fully convey the scope of the invention to those skilled in the art. The terms used in the exemplary embodiments shown in the drawings do not limit the present invention. In the figures, the same units / elements are given the same reference numerals.

[0053]Unless otherwise specified, the terms (including scientific and technical terms) used herein have the commonly understood meanings to those skilled in the art. In addition, it can be understood that terms defined by commonly used dictionaries should be understood to have consistent meanings in the context of their related fields, and should not be understood as idealized or overl...

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Abstract

The present invention discloses an electric appliance fault detection method. The method comprises the steps of: collecting electrical signals of a circuit, and converting the electrical signals to discrete digital signals; performing preprocessing processing of the discrete digital signals, and obtaining discrete digital signals after preprocessing; comparing a power intensity change value of thediscrete digital signals with a power intensity threshold value preset by an electric appliance, and determining an electric appliance matching with the power intensity threshold value and a switching state of the electric appliance according to a comparison result; performing wavelet transform of the discrete digital signals to separate a function cluster; obtaining singular points in the circuit through discontinuity points of one function in the function cluster; and determining faults of the circuit according to the singular points in the circuit and the switching state of the electric appliance. The electric appliance fault detection method increases the identification of classes of the electric appliances, solves the problem that fault electric appliances cannot be confirmed after fault identification in the prior art, and can determine whether types of electric appliances have faults through combination of the fault identification and a load switch identification algorithm based on power.

Description

technical field [0001] The present invention relates to the technical field of electrical fault detection, and more specifically, to a method and system for detecting electrical faults. Background technique [0002] With the gradual development and progress of society, human needs have become more and more diversified, and electronic and electrical products with more complete functions are flooding every corner of society, bringing convenience to human life. Due to insufficient updating and maintenance of electrical equipment, inadequate configuration of power supply specifications, and insufficient management of safe electricity use, etc., once problems occur in the use of electrical appliances by users, it will not only bring harm to the power unit, but also threaten the safety of the entire power supply system. Due to the diversity of electronics and electrical appliances, it has brought huge challenges to the detection and monitoring of the stability, safety and power sa...

Claims

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Application Information

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IPC IPC(8): G01R31/00
CPCG01R31/00
Inventor 殷波魏志强盛艳秀黄贤青张帅
Owner OCEAN UNIV OF CHINA
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