Intelligent special alarming device capable of preventing transformer from being switched on with grounding wires

Abstract

The invention discloses an intelligent special alarming device capable of preventing a transformer from being switched on with grounding wires, which comprises a photoelectric detection module, a datatransmission module and an alarm controller, and is characterized in that the photoelectric detection module is installed at a grounding bar of the transformer, the photoelectric detection module comprises photoelectric head and a receiver, optical signals emitted by the photoelectric head of the photoelectric detection module are reflected back to the receiver by a hanging chuck of a grounding wire when the grounding wire is hung at the grounding bar, the photoelectric detection module generates a hanging signal and transmits the hanging signal to the alarm controller through the data transmission module, the alarm controller receives the hanging signal, and the alarm controller gives out an alarm signal when a busbar knife switch is switched on or a handcart is at an operating position.The intelligent special alarming device capable of preventing the transformer from being switched on with the grounding wires can be used for judging whether the grounding wires on the transformer are disassembled or not and can alarm timely when the grounding wires are forgotten to be disassembled.

Description

technical field [0001] The invention relates to an intelligent anti-transformer special device for closing and alarming with a grounding wire. Background technique [0002] At present, after the power outage maintenance work of the transformer in the substation is completed, in the process of resuming power transmission, the grounding wire on the high and low voltage side of the transformer often needs to be manually checked whether the grounding wire is removed, and there is no corresponding electrical and mechanical locking device. Accidents of switching on with grounding wires frequently occur during the restoration of power transmission after transformer maintenance, which has a significant impact on the safety of people, power grids, and equipment. [0003] At present, there are some grounding wire homing device alarms in the domestic market, and methods such as line impedance testing to judge whether the grounding wire is removed and put back in place. Most of these g...

AI Technical Summary

Problems solved by technology

Most of these grounding wire homing devices are used to detect the grounding wire in the station. If there is an external grounding wire, it is difficult to judge. Active testing requires the active cooperation of professional equipment and personnel, and there are great limitations in popularization and application.

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