Preassembled pole-mounted distribution transformer district

Abstract

The invention provides a preassembled pole-mounted distribution transformer district, which comprises a high-voltage unit, a transformer unit and a low-voltage unit, wherein the high-voltage unit, thetransformer unit and the low-voltage unit are of an integrated structure, and the high-voltage unit is connected with a high-voltage line down lead and is used for receiving electric energy of the distribution transformer district and carrying out overload, short circuit and lightning protection on the distribution transformer district; the transformer unit is connected with the high-voltage unitand is used for increasing and decreasing voltage and transmitting electric energy; and the low-voltage unit is connected with the transformer unit, is connected with a low-voltage power supply lineand is used for secondary protection and outputting electric energy. According to the invention, the high-voltage line and equipment, the transformer and the low-voltage line and equipment are modularly designed and then integrated into a whole, the integration is completely realized in function and structure, the structure is simple, the size is small, disassembly and assembly are easy, and factory machining and field assembly of the whole distribution transformer district construction can be achieved, so that the construction period is shortened, and the construction cost is reduced.

Description

technical field [0001] The invention belongs to the field of electrical and electrical equipment manufacturing, and in particular relates to a pre-installed post-mounted distribution transformer area. Background technique [0002] At present, the 10kV station area of ​​the rural power grid and the urban low-voltage distribution network is mainly composed of drop-in fuses, lightning arresters, transformer bodies, transformer integrated power distribution cabinets (JP cabinets), and supporting accessories. The following defects exist in the production, installation, and operation processes: [0003] (1) The above units are all produced by different manufacturers, with a wide variety and independent installations. There are many on-site installation equipment, long installation and commissioning time, many angle irons, cross arms, hoops, and iron accessories are used. There are many exposed parts, and the failure rate of the distribution station area is high. [0004] (2) Ther...

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Problems solved by technology

[0003] (1) The above units are all produced by different manufacturers, with a wide variety and independent installations. There are many on-site installation equipment, long installation and commissioning time, many angle irons, cross arms, hoops, and iron accessories are used. There are many exposed parts, and the failure rate in the distribution station area is high

[0004] (2) There are many equipment and components in the station area, and the installation is too scattered, the arrangement of high-voltage connecting lines is chaotic and irregular, and there are many equipment that need high-altitude operation and maintenance, resulting in inconvenient operation and management, heavy workload, long time and complicated installation And affect the reliability of power supply

[0005] (3) High-voltage components such as distribution transformers, drop-out fuses, and lightning arresters are in an outdoor working environment, and the insulation level is largely affected by external environmental factors. The insulation level is low, and there are many control points in the construction process, resulting in failure and safety There are many hidden dangers, which can easily affect the tripping rate of the line

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