Mechanical interlocking device for outdoor compact intelligent substation high-voltage switchgear

Abstract

The invention relates to the technical field of high-voltage electrical equipment manufacturing, and in particular relates to a mechanical interlocking device of an outdoor compact intelligent transformer substation high-voltage switch cabinet. The mechanical interlocking device comprises a switch cabinet shell, a low-voltage chamber, a mechanism operation chamber (15), an instrument chamber, a high-voltage chamber, a fuse chamber and a cable chamber, wherein a high-voltage chamber door is arranged at the front part of the high-voltage chamber, a bent plate door holder is arranged on the high-voltage chamber door and an interlocking slot hole is formed in the high-voltage chamber door; a collision interlock is arranged on the fuse chamber, and is connected with a breaking half shaft of an operation mechanism. The mechanical interlocking device can effectively fulfill the aim of five-prevention of the high-voltage switch cabinet. Compared with the prior art, the mechanical interlocking device disclosed by the invention is simpler in structure and more reliable to work, and has the characteristics of being safe to use and convenient to maintain.

Description

technical field [0001] The invention relates to the technical field of high-voltage electrical equipment manufacturing, in particular to a mechanical interlocking device for a high-voltage switch cabinet of an outdoor compact intelligent substation. Background technique [0002] In my country's distribution network, there are still switchgear on the pole, especially in the rural 10kV distribution network, which is composed of high-voltage switches on the pole, high-voltage drop-out fuses on the pole, high-voltage arresters, transformers on the pole, low-voltage distribution boxes, etc. substation system. The equipment in the system is scattered on the high platform on the column, and lacks interlocking protection among each other. Electrical equipment is exposed to the air, and it is difficult to solve problems such as equipment corrosion, aging and vulnerability to external damage. The exposure of conductors in the air leads to frequent failures and potential safety hazard...

AI Technical Summary

Problems solved by technology

At present, there is no interlocking device in the high-voltage chamber of some switchgears. Generally, sheet metal and bolts are used to tighten each other to achieve the effect of isolating the high-voltage part. However, this method is far from achieving the five-proof function of truly isolating high-voltage. Opening the bolts and being exposed to high pressure can easily cause misoperation. For example, welding and sealing the cabinet door of the high-voltage part will bring a lot of trouble to maintenance and cause poor versatility and high operation and maintenance costs.

The existing technical solutions are either too complicated or difficult to install and operate

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