Grounding device with automatic protection

Abstract

The invention relates to a grounding device with automatic protection, and belongs to the technical field of power transmission safety equipment. The grounding device with automatic protection is connected with three phase lines between a high-voltage breaker and a circuit side switch through grounding wires and a grounding rod, and the grounding device includes a shell having a control panel, a grounding rod sleeve arranged in the shell and used for insertion of the grounding rod and an electromagnetic lock having an operation handle for controlling insertion of the grounding rod; an open endof the grounding rod sleeve communicates with a grounding rod in the shell, and a magnetically controlled switch is arranged at the bottom of the interior of the grounding rod sleeve; and a circuitboard having a protection circuit is also arranged in the shell. According to the grounding device, through cooperation among the electromagnetic lock, the grounding rod sleeve provided with the magnetically controlled switch and the circuit board provided with the protection circuit, misoperation behavior of mistakenly electrified installation of grounding wires and power transmission with the grounding wires can be prevented, and the device is simple in structure, convenient to operate, stable and reliable in work and good in safety performance, and thus has good comprehensive using performance.

Description

technical field [0001] The invention relates to a grounding device with automatic protection, belonging to the technical field of power transmission safety equipment. Background technique [0002] The installation of ground wires in power transmission lines has double-edged properties. It has the function of safe work, but improper use will also cause damage. If the live wire is connected to the ground wire or connected to the ground wire for power transmission, it will cause harm to personnel and electrical equipment, and will cause serious damage. severe electrical accidents. If the grounding end of the grounding wire is not in good contact, the maintenance personnel will be in a dangerous working environment. [0003] The grounding end of the grounding wire commonly used in electric power enterprises is simple. The grounding stake uses iron plates and the jacks use copper pipes. The iron plates on their contact parts are extremely easy to rust, and their grounding resist...

AI Technical Summary

Problems solved by technology

However, there will be the following safety hazards in actual operation: 1. Due to the failure of the operating mechanism of the high-voltage circuit breaker, the switch in the high-voltage circuit breaker cannot be disconnected. At this time, if the operator installs the ground wire, it will cause personal injury and death and equipment burning accidents

2. When the knife switch on the line side is not disconnected, if the line side reverses the power transmission, it will also cause serious accidents

3. Since there are a lot of high-voltage switch cabinets in the substation, if there is a misoperation during operation, the power will be wrongly transmitted with the grounding wire, causing serious accidents

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