Online monitoring type intelligent electrified switching-in protection device of lightning arrester and control method

Abstract

The invention relates to an online monitoring type intelligent electrified switching-in protection device of a lightning arrester and a control method. The device comprises a box body and a detection circuit embedded into the box body, wherein the detection circuit comprises an MCU (Micro-programmed Control Unit) control unit, an electric energy metering unit, a digital tube display unit, a power supply unit, a signal indication lamp unit, a buzzer, an operational amplification unit, a difference operational amplification unit, a current mutual induction unit, a current measuring unit and a voltage measuring unit. The method comprises the following steps: an equipment switching-in worker switches the device into a connection line of a monitor of the lightning arrester; and voltage and current are detected, and response of an indication lamp and the buzzer is combined to judge whether a temporary grounding wire is reliably grounded or not. The online monitoring type intelligent electrified switching-in protection device can be used for directly and reliably judging whether the grounding wire is reliably grounded or not; and functions of displaying grounding current and voltage by a digital tube and alarming by the buzzer and the like can be used for reminding the equipment switching-in worker that whether the temporary grounding wire is reliably grounded or not, so that hidden dangers are eliminated and safety coefficients of production are improved.

Description

technical field [0001] The invention relates to a lightning arrester online monitoring intelligent live access protection device and a control method. Background technique [0002] When the traditional zinc oxide arrester on-line monitoring device is connected, a core-type transformer needs to be connected in series with the grounding wire. The transformer is usually installed in the connection line above the zinc oxide arrester monitoring meter. During on-site construction, first use a temporary grounding wire to short-circuit the top of the monitoring meter to the ground, then untie the connecting wire above the monitoring meter, string it into the core-through transformer of the monitoring device, and finally connect it back to the ground. Monitor meters and restore field wiring. The on-line monitoring device of the zinc oxide arrester is usually connected with electricity. In order to ensure the personal safety of the personnel connected to the equipment, it is necessar...

AI Technical Summary

Problems solved by technology

After the ordinary temporary grounding wire is connected, it is impossible to judge whether it has been reliably grounded, and there are certain potential safety hazards

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