Anti-breakdown intelligent electric meter

Abstract

The invention discloses an anti-breakdown intelligent electric meter, and relates to the technical field of the intelligent electric meter, wherein the anti-breakdown intelligent electric meter comprises an electric meter, an electric meter box, a lightning stroke surge protection circuit, a communication circuit and an alarm circuit. The input end of the lightning stroke surge protection circuit is connected with the electric meter, the output end of the lightning stroke surge protection circuit is connected with the communication circuit, and the input end of the communication circuit is connected with the alarm circuit, wherein the lightning stroke surge protection circuit adopts a two-stage composite lightning protection structure, a ceramic gas discharge tube is adopted at an input end to serve as first-stage protection, and a zinc oxide varistor is adopted at an output port to serve as second-stage protection. The two-stage composite lightning protection structure is adopted, common-mode protection and differential-mode protection can be achieved, the intelligent electric meter is effectively prevented from being broken down by lightning, and the electric meter is prevented from being damaged by lightning overvoltage.

Description

technical field [0001] The invention relates to the technical field of smart electric meters, in particular to an anti-breakdown smart electric meter. Background technique [0002] Smart meters are one of the basic equipment for data collection in smart distribution networks. They undertake the tasks of raw energy data collection, measurement and transmission, and are the basis for information integration, analysis and optimization, and information presentation. In addition to the basic power consumption measurement function of the traditional electric energy meter, it also has intelligent functions such as two-way multi-rate metering, user-side control, two-way data communication with multiple data transmission modes, and anti-theft electricity. [0003] In summer, lightning has become one of the most serious natural disasters. In the fields of communication technology, computer network and information system that widely use large-scale integrated circuits in modern times, ...

AI Technical Summary

Problems solved by technology

[0003] In summer, lightning has become one of the most serious natural disasters. In the fields of communication technology, computer network and information system that widely use large-scale integrated circuits in modern times, it is particularly important to prevent lightning damage. Smart meters often appear in low-voltage power distribution systems in rural areas. The phenomenon of a large number of damages due to lightning breakdown, lightning not only leads to direct loss of instrumentation equipment, but also causes loss and disputes in electricity consumption billing

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