Training and evaluation system for power metering device connecting correct errors identifying

Abstract

The invention relates to a training and evaluation system for power metering device connecting correct errors identifying, which comprises a power metering device connecting correct errors determiningdevice, a process intelligent recognition device, a secondary side wiring terminal of a transformer, an electric energy meter tail wiring terminal. A shell body of the power metering device connecting correct errors determining device is provided with a test output socket, a polarity detecting socket, an RS485 detecting socket, a phase sequence detecting socket, a test diagram, a 485 test indicating light, a polarity test indicating light, a phase sequence test indicating light, a power switch, a 485RST reset button, an IRST polarity reset button, an ITEST polarity test button, a URST phase sequence reset button, and a UTEST phase sequence test button. Circuits of the power metering device connecting correct errors determining device include a rectifying circuit, an RS485 detecting circuit, a current detecting circuit and a voltage detecting circuit; the secondary side wiring terminal of the transformer is correspondingly connected to the electric energy meter tail wiring terminal through a three-phase four-wire; the process intelligent recognition device includes an electronic monitor and a wireless signal emitter, a wireless signal receiving device and a control terminal.

Description

technical field [0001] The invention relates to a teaching and training equipment for electrician skills, in particular to a training and evaluation system for identifying correct and wrong wiring of an electric energy metering device. Background technique [0002] Today's electric power industry is developing rapidly. In order to ensure safe, reliable, accurate and economical operation of electric power industry production and electric energy measurement, we must rely on instruments and meters installed on electric power production sites that can measure voltage, current, power, electric energy and other electrical parameters. to guarantee. [0003] The electric energy metering device is the "scale" for electric energy trading, and both the power supply and the consumer attach great importance to it. The accuracy of electric energy metering is not only related to the accuracy of the electric energy metering device, but also closely related to whether the wiring of the mete...

AI Technical Summary

Problems solved by technology

[0005] ① Use instruments and meters: volt-ampere phase meter, field calibrator of electric energy meter or some smart electric energy meter calibrator and electric energy measurement fault error detector for detection; the premise of using this method is that the field has been powered and has a certain load Instruments can only be used for detection under certain circumstances, but this type of detection cannot determine whether there are problems such as reverse polarity and phase sequence mismatch.

[0006] ② Use the light: use the light to align the wires, you can determine the continuity of the wires, but you can’t judge the polarity, and it is time-consuming and laborious, requiring high technical level of personnel; therefore, most of the installers will not use it.

Therefore, based on this kind of psychology, the master may not do his best to teach his apprentices, so the growth rate of technical talents is slow

Images