Substation grounding device and grounding pile

Abstract

The invention relates to a grounding device and a grounding stud of a substation. The grounding stud comprises a connecting plate, a stretching plate and a connection lug, wherein the connecting plate is a flat plate; the stretching plate is an L-shaped bending plate, and the L-shaped bending plate comprises a cross plate and a vertical plate in angle connection; a side of the connecting plate is connected with one end of each of the cross plate and the vertical plate; the other side of the connecting plate is used for connecting with a grounding bar; one side of the vertical plate is connected with the connection lug; a first installation hole is arranged on the connection lug; the first installation hole is used for installing a first bolt to lock a grounding wire; the connecting plate, the stretching plate and the connection lug are integrally formed by using aluminum alloy. Compared with the traditional grounding stud welded by steel or iron, the heating caused by the induction current flowing through the ground stud can be effectively reduced; the contact area of the grounding stud and the grounding bar is increased, the contact resistance between the grounding bar and the grounding stud is reduced, the heating caused by the induction current flowing through the grounding stud is further reduced, the erosion is avoided, and the grounding is reliable.

Description

technical field [0001] The invention relates to a substation grounding device, in particular to a substation grounding device and a ground pile. Background technique [0002] The substation is equipped with a large number of high-voltage electrical equipment for power transformation, power transmission and distribution, and other electrical equipment. In order to prevent induction electricity and sudden incoming electricity, and ensure the personal safety of the staff, the high-voltage electrical equipment for maintenance must be grounded safely and reliably. At present, there are two common grounding measures for electrical equipment in power systems: closing the grounding knife switch and hanging temporary grounding wires. Operation experience shows that if only the grounding wire is connected to the grounding switch during line maintenance, the induced current flowing through the grounding wire can reach 100A. The traditional grounding pile is prone to heat and even ablat...

AI Technical Summary

Problems solved by technology

Operation experience shows that if only the grounding wire is connected to the grounding knife switch during line maintenance, the induced current flowing through the grounding wire can reach 100A. When the traditional grounding pile flows through a large induced current, it is easy to heat up and even ablate, resulting in unreliable grounding. , a serious threat to personal safety and equipment safety

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