110kV transformer low-voltage side outgoing cable contact cabinet

Abstract

A 110kV transformer low-voltage side outlet cable contact cabinet comprises a cabinet body, three round holes are formed in the north side of the cabinet body at equal intervals, each round hole is provided with a high-voltage wall bushing through a stainless steel bolt, and the external wiring end of each high-voltage wall bushing is connected with a transformer low-voltage groove oil filling bushing through a three-phase copper busbar. Yellow, green and red high-voltage heat-shrinkable bushings are sequentially mounted on the three high-voltage wall bushings; an openable cabinet door is installed on the south side of the cabinet body so as to divide the cabinet body into a left box body and a right box body, a three-phase copper busbar and an internal wiring end of a high-voltage wall bushing are arranged in the left box body, and a valve-shaped lightning arrester is connected to the lower end of the three-phase copper busbar so as to instantly lead external high voltage generated by external thunder and lightning into a substation grounding electrode at the bottom of the cabinet body; multiple rows of waterproof heat dissipation holes are formed in the west side of the cabinet body, and a stainless steel filter screen is installed in the cabinet body; an openable cabinet door is installed on the east side of the cabinet body, and a plurality of European style touchable cable joints are arranged in the cabinet body.

Description

Technical field: [0001] The invention relates to a 110kV transformer low-voltage side outgoing cable connection cabinet. Background technique: [0002] The transformer is a device that uses the principle of electromagnetic induction to change the AC voltage. The main components are the primary coil, the secondary coil and the iron core. The main functions are: voltage transformation, current transformation, impedance transformation, isolation, voltage regulation, etc.; For: distribution transformers, power transformers, fully sealed transformers, combined transformers, dry-type transformers, oil-immersed transformers, single-phase transformers, electric furnace transformers, rectifier transformers, reactors, anti-interference transformers, lightning protection transformers, box-type transformers Electrical test transformers, corner transformers, high current transformers, excitation transformers, etc. [0003] In order to facilitate the unattended management of the substati...

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Problems solved by technology

[0003] In order to facilitate the unattended management of the substation of the pumping station, the high-voltage power transformation and distribution method mostly adopts COMPASS-145 air-insulated high-voltage combined electrical appliances. There are three oil-filled bushings at the outlet end of the low-voltage side of the transformer. Since each oil-filled bushing is respectively connected to three high-voltage cable terminal joints to the incoming cabinet of the high-voltage room, each high-voltage cable has a relatively thick diameter, so it is connected to the terminal Finally, the push-pull force on the oil-filled bushing is very large, resulting in leakage of the oil-filled bushing of the transformer, which poses a great safety hazard, and the path resistance is large, resulting in high heating temperature at the connection end, and the internal temperature change of the transformer cannot be obtained in time and discover potential accidents

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