Electric arc fault detection method for household electrical appliance

A technology for arc faults and household appliances, applied in the direction of testing dielectric strength, etc., can solve problems such as difficult and judgment of arc characteristics, and achieve the effect of low calculation, stable and efficient discrimination characteristics

Active Publication Date: 2021-06-18
JIANGSU INTELEVER ENERGY TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For more complex line arc faults, its arc characteristics

Method used

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  • Electric arc fault detection method for household electrical appliance
  • Electric arc fault detection method for household electrical appliance
  • Electric arc fault detection method for household electrical appliance

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Embodiment Construction

[0036] The present invention is described in further detail now in conjunction with accompanying drawing. These drawings are all simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, so they only show the configurations related to the present invention.

[0037] Such as Figure 1 to Figure 4 As shown, the arc fault detection method of the household appliance of the present invention comprises the following steps in sequence,

[0038] Step 1: Draw the current phase space structure of different household appliances;

[0039] Step 1 includes the following sub-steps:

[0040] Step 1.1: Collect the time-domain waveform I(t) of the load electrical current through the sensor, where t is a discrete time series, t=0, 1, 2, 3...N;

[0041] Such as Figure 5 As shown, the household appliances are electric oven, induction cooker, kettle, microwave oven, refrigerator, and rice cooker;

[0042] Step 1.2: Calculate the t...

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Abstract

The invention relates to an electric arc fault detection method for household electrical appliance, and belongs to the technical field of electric appliance safety detection. The method sequentially comprises the steps of 1, drawing current phase space structures of different household appliances; 2, extracting features of the current phase space structure in the step 1; and step 3, detecting an arc fault through the features extracted in the step 2, wherein the step 1 comprises the following sub-steps: collecting a time domain waveform I (t) of a load electric appliance current through a sensor, calculating a time domain delay signal J (t) = I (t-T), wherein T is the delayed time duration, calculating a phase space vector X (t) = [I (t), J (t)], where X (t) is a two-dimensional vector sequence; and performing phase spacebinarization image display on a two-dimensional plane. According to the method, the electric arc fault of a relatively complex line can be judged, and the electric arc can be stably and efficiently detected while the calculated amount is reduced.

Description

technical field [0001] The invention relates to an arc fault detection method of a household appliance, which belongs to the technical field of electric appliance safety detection. Background technique [0002] Electric arcs are often one of the important causes of fires when household appliances fail. For the line-to-ground arc and the arc generated between the line and the line, it can often be judged by detecting the current condition. For more complex line arc faults, its arc characteristics are difficult to judge through a single current condition. Therefore, the detection of series arc faults using signal processing and machine learning algorithms is an active research topic, which is of great significance for the safe use of electricity. Contents of the invention [0003] The object of the present invention is to overcome the problems existing in the prior art, and provide a method for detecting arc faults of household appliances, which can judge arc faults occurr...

Claims

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Application Information

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IPC IPC(8): G01R31/12
CPCG01R31/12
Inventor 田慧云何朝伟邓士伟
Owner JIANGSU INTELEVER ENERGY TECH CO LTD
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