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A method for detecting arc faults of household appliances

A technology for arc faults and household appliances, which is applied in the direction of testing dielectric strength, etc., can solve the problems of difficulty in arc characteristics and judgment, and achieves the effect of low calculation amount, stable and efficient detection, and reduced calculation amount.

Active Publication Date: 2021-07-27
JIANGSU INTELEVER ENERGY TECH CO LTD
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  • Description
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Problems solved by technology

For more complex line arc faults, its arc characteristics are difficult to judge through a single current condition

Method used

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  • A method for detecting arc faults of household appliances
  • A method for detecting arc faults of household appliances
  • A method for detecting arc faults of household appliances

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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] like 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] like 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 time do...

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Abstract

The invention relates to an arc fault detection method for household appliances, belonging to the technical field of electrical safety detection. The steps include step 1: drawing the current phase space structure of different household appliances; step 2: extracting the features of the current phase space structure in step 1; step 3: detecting arc faults through the features extracted in step 2. The step 1 includes the following sub-steps: collecting the time-domain waveform I(t) of the load electrical current through the sensor, calculating the time-domain delay signal J(t)=I(t‑T), where T is the delay time, and calculating The phase space vector X(t)=[I(t), J(t)], where X(t) is a two-dimensional vector sequence; on the two-dimensional plane, the binarized image display of the phase space is performed. The present invention can judge arc faults that occur in relatively complex lines, and can perform stable and efficient detection of arcs while reducing the amount of calculation.

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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Patent Type & Authority Patents(China)
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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