Portable pneumatic circuit grounding device of transformer substation

Abstract

The invention discloses a portable pneumatic circuit grounding device of a transformer substation, and relates to a transformer substation circuit grounding device. The portable pneumatic circuit grounding device of the transformer substation comprises a pneumatic mast (1), a switch blade working cylinder (2) and moving contacts (3), wherein the pneumatic mast (1) is formed by connecting and combining multiple levels of air cylinders, the bottom of the lowest level of air cylinder is provided with an air inlet-outlet valve (11), the switch blade working cylinder (2) is fixed to the top of the pneumatic mast (1), the switch blade working cylinder (2) is internally provided with a switch blade transmission rod (4) and a piston (21) connected with the piston, the bottom of the switch blade working cylinder (2) is provided with an air inlet-outlet hose (22), the number of the moving contacts (3) is two, and the moving contacts (3) are arranged at the tops of two clamping arms (51) of a moving contact clamping device (5). The portable pneumatic circuit grounding device of the transformer substation expands the height range of a carried circuit ground lead, extra-high voltage and extra-high voltage outdoor open type electrical equipment with the higher installation height can be grounded reliably, and the portable pneumatic circuit grounding device of the transformer substation is simple in structure, convenient to carry and safe to operate.

Description

technical field [0001] The invention relates to a short-circuit grounding device for a substation, in particular to a portable pneumatic short-circuit grounding device for a substation. Background technique [0002] The grounding wire is an important tool in the power system to ensure the safety of the staff when voltage unexpectedly appears on the equipment and lines that have been powered off. Inductive voltage generated by electrified equipment is harmful to the human body, and at the same time, the residual charge of the power-off equipment is discharged. Installing and removing temporary ground wires is an important maintenance operation in power systems. At present, portable short-circuit grounding wires are usually used in the maintenance work of substation equipment in substations, and the short-circuit grounding wires are mainly hung on the maintenance equipment or conductors by using insulating operating rods. However, at the substation maintenance site, the grou...

AI Technical Summary

Problems solved by technology

Taking the STB-550 grounding switch knife produced by Wuxi AREAL Company as an example, the distance between the static contact of the switch knife and the ground has reached 9180mm, so in the actual work site, even if the longest grounding operation rod is used, the staff must The grounding wire can only be hung manually at a height of about 3 to 4 meters. Since the 500kV grounding wire has a large weight and the length of the grounding rod is too long, in this case, the staff is prone to the risk of falling from a high altitude when operating manually. Risk of Inductive Electric Shock

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