Ground wire automatic monitoring device

Abstract

The invention relates to the technical field of a ground wire device in power system transformer substation, in particular to a ground wire automatic monitoring device, which comprises a central processing unit (CPU), a line communication module, an output relay, a warning lamp relay, a voice module, a first coupler, a second coupler, a loudspeaker, a net gate switch and a grounding terminal switch for ground wire signal collection, wherein the grounding terminal switch consists of a bolt, a spring, two nylon sleeves, a fixing electrode and a movable electrode; the fixing electrode and the movable electrode are provided with signal wire wiring holes; the end of the bolt for sheathing the movable electrode is meshed with a nut; and the nylon sleeve forms a concave shape to perform the insulation function. The fixing electrode and the movable electrode are in the shape of a groove for meshing with the nylon sleeves. When the ground wire is put on the movable electrode, the spring is pressed to make the movable electrode in contact with the fixing electrode, and the electrical signal is conducted. After the ground wire is disassembled, the movable electrode and the fixing electrode are separated and the electrical signal is disconnected, thus the functions of electrical signal outputting after the ground wire is connected and electrical signal disappearance after the ground wire is disassembled is achieved. The invention can prevent the accident caused by switching on with ground wire.

Description

technical field [0001] The invention relates to the technical field of grounding poles and signal output devices in electric power system substations, in particular to an automatic monitoring device for grounding wires. Background technique [0002] In the current power system substation, since there are many hanging parts of the grounding wires and they are relatively scattered, when the switch needs to be closed, the operator must remove the grounding wires one by one, which brings a lot of workload to the operators on duty. If you are negligent, it is very easy to cause the switch with the ground wire to be closed, resulting in major equipment accidents and personal injury accidents. Such equipment and personnel injury accidents occur from time to time, and this situation has seriously affected the safe operation of the power grid. In order to ensure the safety of the operators, the parts that need to be hung with the ground wire before the operation of the substation can...

AI Technical Summary

Problems solved by technology

Due to whether the current ground wire has been hung up and whether the ground wire has been removed, there is no obvious sign on the site and in the duty room of the substation. In addition, the operator of the double busbar cabinet and the distribution cable room cannot see the place where the ground wire is hung. In some places, it is possible to close the isolation switch before the ground wire is removed, resulting in major personal or equipment accidents. Therefore, a device that can automatically monitor whether the ground wire has been hung up and whether the ground wire has been removed and immediately send out visible and audible signals It is very necessary to remind the operators to prevent the closing accident with the ground

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