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Instrument examination method based on electrical energy metering

A technology of electric energy measurement and electric energy meter, which is applied in the direction of measuring electric variables, instruments, measuring devices, etc., and can solve problems such as near open circuit, increased mechanical resistance, undercurrent method stealing electricity, etc.

Inactive Publication Date: 2012-07-04
KAIFENG POWER SUPPLY COMPANY STATE GRID HENAN ELECTRIC POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] 2. Electricity stealing by undercurrent method
③ Man-made poor contact faults of the terminals in the TA secondary circuit, making it a virtual connection and almost an open circuit
[0019] 3. Stealing electricity by phase shifting method
[0032] 4. Electricity stealing by differential expansion method

Method used

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  • Instrument examination method based on electrical energy metering
  • Instrument examination method based on electrical energy metering
  • Instrument examination method based on electrical energy metering

Examples

Experimental program
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Embodiment Construction

[0062] The present invention adopts the instrument inspection method, which is a quantitative inspection method. By using ordinary ammeters, voltmeters, and phase meters to perform on-site quantitative inspections, it can judge whether the metering equipment is normal or not, and can also be used when necessary. The standard electric energy meter verifies the consumer electric meter.

[0063] 1. Check with an ammeter

[0064] A. Check the current with a clamp ammeter

[0065] B. Use a clamp-on ammeter or an ordinary ammeter to check the current of the relevant circuit.

[0066] 2. Check with a voltmeter

[0067] Use the voltage range of an ordinary voltmeter or a multimeter to check whether the voltage of the metering voltage circuit is normal.

[0068] A. Check for loss of voltage or low voltage caused by open circuit or poor contact.

[0069] B. Check for abnormal voltage caused by wrong TV polarity connection.

[0070] C. Check the voltage drop of the circuit from the TV outlet to the ...

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Abstract

The invention relates to an electric quantity examination method, in particular to an instrument examination method based on electrical energy metering, which is a quantitative examination method. The instrument examination method is used for realizing field quantitative detection by the aid of a common ampere meter, a common voltmeter and a common phase meter, and accordingly judges whether metering equipment is normal or not. An electrical energy calculating device can be in an abnormal wiring state sometimes during electrical energy metering operation, at the moment, the method for correctly and reasonably calculating mistaken electric quantity is extension for accuracy of electrical energy calculation, and simultaneously, electric charge can be collected in time advantageously.

Description

Technical field [0001] The invention relates to an electric quantity inspection method, in particular to an electric quantity inspection method based on electric energy metering. Background technique [0002] We know that the amount of an electric energy meter is mainly determined by the product of the three elements of voltage, current, power factor and time. Therefore, as long as you find a way to change any of the three elements, the meter can turn slowly or stop. Even reverse, so as to achieve the purpose of stealing electricity. In addition, the purpose of stealing electricity can also be achieved by using the method of changing the structural performance of the meter itself to make the meter rotate slowly. All kinds of acts of unauthorized connection and use of electricity without a meter are even stealing acts. According to the common electricity stealing methods, this article divides them into five categories: undervoltage stealing, undercurrent stealing, phase shifting...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R35/04
Inventor 高鑫朱旭红
Owner KAIFENG POWER SUPPLY COMPANY STATE GRID HENAN ELECTRIC POWER
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