Three-phase kilowatt-hour meter false wiring automatic conversion method

Abstract

The invention discloses a three-phase kilowatt-hour meter false wiring automatic conversion method, aiming at solving the problems of a three-phase kilowatt-hour meter of the prior art that wiring error easily occurs and is difficult to correct, so as to cause influence on normal operation of an electric system. The three-phase kilowatt-hour meter false wiring automatic conversion method comprises the steps of receiving current three-phase voltage and three-phase current through a digital signal processor, and calculating current active power, reactive power and power factor; judging current three-phase working quadrant through the digital signal processor depending on the calculated power and power factor, and judging that whether three-phase wiring is correct or not depending on current three-phase working quadrant; if the wiring is right, continuing operation; and if the wiring is wrong, controlling a digital phase shift multiplier to implement conversion through the digital signal processor. Through the solution, the method disclosed by the invention can achieve a purpose of automatically correcting a wiring error, and has quite high practical value and promotional value.

Description

technical field [0001] The invention relates to a switching method, in particular to an automatic switching method for wrong wiring of a three-phase electric energy meter. Background technique [0002] As we all know, the measurement of the three-phase electric energy meter is the basis for the power supply department to collect electricity charges, and it plays a very important role in the work of the power supply system. However, in the actual implementation process, the three-phase electric energy meter is prone to various wiring errors. If it is not corrected in time It will cause measurement errors and then cause charging errors, which will bring a lot of inconvenience to the power management department and users. [0003] At present, the wrong wiring of the three-phase electric energy meter in China is still limited to how to identify whether it is wrong wiring, and manually correct it when it is judged to be wrong wiring. At the same time, the power department needs t...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an automatic conversion method for wrong wiring of a three-phase electric energy meter, which mainly solves the problem in the prior art that the three-phase electric energy meter is prone to wiring errors and is not easy to correct, which will affect the normal operation of the power system

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