Method for judging wiring correctness of electric energy meter under condition of no load

Abstract

The invention provides a method for judging the wiring correctness of an electric energy meter under the condition of no load, which belongs to the technical field of on-site inspection and acceptanceof electric energy metering devices. The method comprises the following steps: S1, switching on a reactive power compensation capacitor bank, and measuring the secondary current of an electric energymeter, wherein the magnitude of current should conform to the requirements of the regulation; S2, recording the voltages of the phases A, B and C as Ua, Ub and Uc respectively, recording the line voltage combinations under the condition of wiring along the phase sequence as Uab and Ucb, recording a first phase current as Ia, and recording a second phase current as Ic; S3, using a volt-ampere phase meter to measure the voltage and the current of the wiring of the electric energy meter and the phase between the voltage and the current in turn, and recording corresponding data; and S4, determining whether the wiring of the electric energy meter is correct according to the recorded data. The problem that the wiring of an electric energy meter cannot be measured under the condition of no loadcan be solved. The work efficiency of on-site acceptance can be improved.

Description

technical field [0001] The invention relates to the technical field of on-site detection and acceptance of electric energy metering devices, in particular to a method for judging the correctness of electric energy meter wiring under no-load conditions. Background technique [0002] The electric energy meter is an important measuring tool for electric energy measurement, and the measured electric quantity is relatively large. In order to ensure the accuracy and reliability of electric energy measurement, the electric energy meter must be connected correctly, otherwise great losses or errors may occur. The electric energy metering device is the "steelyard" of each link of power generation, power supply, and electricity consumption in the electric power industry. The accuracy of its measurement is directly related to energy saving and economic accounting, and directly involves the interests of the country and enterprises. There is only one correct wiring method for the energy m...

AI Technical Summary

Problems solved by technology

[0005] In view of this, the present invention provides a method for judging the correctness of electric energy meter wiring under no-load conditions, which can solve the problem that the electric energy meter wiring cannot be measured under no-load conditions, and improve the work efficiency of on-site acceptance

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