Burglar alarm device and burglar alarm monitoring method of transformer

Abstract

The invention discloses a burglar alarm device and a burglar alarm monitoring method of a transformer. The burglar alarm device of the transformer comprises a housing and a control circuit fixed in the housing, and is characterized in that the control circuit comprises a central processing unit, a waveform transformation unit and a GSM (global system for mobile communications) communication unit, fire wires of an A phase, a B phase and a C phase and a zero wire N of the transformer are connected into an input end of the waveform transformation unit, a signal input end of the waveform transformation unit is connected with a signal input end of the central processing unit, and a signal input port and a signal output port of the central processing unit are respectively connected with an input port and an output port of the GSM communication unit. The burglar alarm monitoring method of the transformer includes following steps: step a, starting; step b, receiving and analyzing an A phase waveform, a B phase waveform and a C phase waveform of an alternating current; step C, judging whether a first falling edge is of one of the three phases or not, and if yes, judging whether the phase is a default phase or not; step d, performing default phase treatment. The burglar alarm device of the transformer prevents judgment missing or erroneous judgment situations of an alarm from occurring by judging phase information of the three phase alternating current.

Description

technical field [0001] A transformer anti-theft alarm device and an anti-theft alarm monitoring method belong to the field of transformer safety equipment. Background technique [0002] In the current society, some illegal elements steal copper cores and cables in outdoor transformers to obtain illegal benefits from time to time. a big problem. Especially in remote rural areas, transformers in Taiwan areas are frequently stolen and destroyed, causing large-scale power outages and causing heavy losses to the country and the people. [0003] Traditional transformer anti-theft alarms often play a certain role in the initial stage of use by judging the phase line switch signal and alarming for wire cutting and disconnection. The phases are connected in parallel to the cut phase line, so that two phases of the three-phase AC have the same voltage output, so the traditional alarm cannot be recognized and cannot send out an alarm signal, so that it is impossible to prevent crimin...

AI Technical Summary

Problems solved by technology

Especially in remote rural areas, transformers in Taiwan areas are frequently stolen and destroyed, causing large-scale power outages and causing heavy losses to the country and the people.

[0003] Traditional transformer anti-theft alarms often play a certain role in the initial stage of use by judging the phase line switch signal and alarming for wire cutting and disconnection. The phases are connected in parallel to the cut phase line, so that two phases of the three-phase AC have the same voltage output, so the traditional alarm cannot be recognized and cannot send out an alarm signal, so that it is impossible to prevent criminals from continuing to steal the copper core and cable

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