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Chopped wave detection method

A detection method and step difference technology are applied in the detection field of anti-dimmer electricity stealing, which can solve the problem of no detection method, and achieve the effect of preventing electricity stealing and maintaining market fairness.

Active Publication Date: 2018-11-23
SINO WEALTH ELECTRONICS
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  • Claims
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Problems solved by technology

There is currently no effective detection method for this new DIMMER electricity stealing method

Method used

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Embodiment Construction

[0028] The detailed features and advantages of the present invention are described in detail below in the specific embodiments, the content of which is sufficient to enable any person skilled in the art to understand the technical content of the present invention and implement it accordingly, and according to the specification, claims and drawings disclosed in this specification , those skilled in the art can easily understand the related objects and advantages of the present invention.

[0029] Since the popularization and application of electronic energy meters, ways of stealing electricity have emerged in an endless stream. In the prior art, anti-stealing electricity mainly revolves around reducing voltage and current, and detecting reverse voltage and current signals. Using DIMMER to steal electricity is a more subtle way. This way of stealing electricity has been encountered in the Bangladesh electricity meter market.

[0030] figure 1 A power stealing method of a dimm...

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Abstract

The invention provides a chopped wave detection method featured by comprising the following steps: a, continuously sampling voltage signals in a set period; b, calculating a multi-order difference forvalues obtained in continuous sampling; c, calculating a number of the multi-order difference exceeding a set threshold, comparing the number with a preset number, and determining a chopped wave is detected or a light dimmer electricity stealing condition if the obtained number exceeds the preset number; determining a normal power usage condition if the obtained number does not exceed the presetnumber.

Description

technical field [0001] The invention relates to a detection method for chopping, in particular to a detection method for anti-dimmer electricity stealing. Background technique [0002] Since the popularization and application of electronic energy meters, ways of stealing electricity have emerged in an endless stream. In the prior art, the usual methods of anti-stealing of electric meters are basically carried out around reducing the voltage and current, and detecting the voltage and current signal of reverse connection. [0003] However, there is a new and hidden way of stealing electricity from dimmers. The power stealing method of the dimmer (DIMMER) is to chop the sampling voltage, which interferes with the voltage signal, so that the measured voltage effective value and the phase angle of the voltage and current are greatly changed, and the voltage effective value becomes smaller. (the measured electric quantity becomes smaller), and the phase angle becomes larger (the...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R19/10G01R11/24
CPCG01R11/24G01R19/10
Inventor 蔡贤耀吴海波
Owner SINO WEALTH ELECTRONICS