Metering secondary voltage loop fault monitoring device

Abstract

The invention relates to a metering secondary voltage loop fault monitoring device which comprises a fault detection circuit, a single-chip microcomputer and a 4G module, an IO port of the single-chip microcomputer is connected with the fault detection circuit, the single-chip microcomputer is connected with the 4G module, and the input of the fault detection circuit is a junction box A, a junction box B, a junction box C and a zero line. When the connection of the secondary line of the voltage loop is not solid and voltage loss is caused, the level of the output end of the detection circuit is changed through an optical coupling element of the fault detection circuit, the output end of the detection circuit is connected to the IO port of the single-chip microcomputer to serve as input, when the level of the IO port is detected to be changed, it can be considered that a disconnection fault occurs, and when the voltage secondary disconnection situation occurs, short message reminding is achieved through a 4G module. The problem of insufficient real-time monitoring and reminding modes is solved, metering fault points can be quickly eliminated, and the operation and maintenance efficiency of workers is improved.

Description

technical field [0001] The invention belongs to the field of electric energy measurement, and relates to a secondary voltage loop fault monitoring technology, in particular to a measurement secondary voltage loop fault monitoring device. Background technique [0002] The secondary voltage circuit of the metering device may be disconnected due to man-made reasons or long-term running time, oxidation of contact points, loose connection screws, or untightened screws such as meter replacement and junction box replacement. The current monitoring lacks real-time performance, and there is no timely and effective reminder method. Contents of the invention [0003] The object of the present invention is to overcome the shortcomings of the prior art, and provide a metering secondary voltage loop fault monitoring device, which can realize real-time monitoring and reminder. [0004] The technical scheme that the present invention solves technical problem adopts is: [0005] A meteri...

AI Technical Summary

Problems solved by technology

The current monitoring lacks real-time performance, and there is no timely and effective reminder method

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