Remote operation sub-box combined transformer

Abstract

The invention relates to a remote operation sub-box combined transformer. The transformer comprises a main oil tank, an auxiliary oil tank and a transformer body; the auxiliary oil tank penetrates through the upper portion of the main oil tank, and a full-sealed structure is formed between the auxiliary oil tank and the main oil tank; a fuse and a load switch are arranged in the auxiliary oil tank; a low-voltage chamber and a transformer chamber are arranged on the front side of the transformer main oil tank in parallel; a high-voltage bushing of the transformer is directly ejected out of thetank cover and is connected with a high-voltage line through an overhead conductor; and an independent fuse chambe, is arranged on one side of the main oil tank and is isolated from the main oil tank.By adopting a high-voltage overhead line structure, a high-voltage cable can be directly connected to the supporting insulator from a line, the use amount of user cables, cable trench construction and the like can be saved, and the remote operation sub-box combined transformer has the characteristics of simple structure, reliable performance, good sealing effect, convenience in installation, complete protection functions, small occupied area and convenience in maintenance.

Description

technical field [0001] The invention relates to a combination transformer, in particular to a remote operation sub-box combination transformer. Background technique [0002] At present, in the wind power prefabricated substation commonly used in the domestic wind power industry, part of the transformer shell is external, referred to as the Hua-style box transformer, which adopts the structure of high-voltage cables entering the line, and the cables need to be laid underground, and the lines are long. There are many, and the construction is relatively difficult. The high-voltage bushings, arresters, supporting insulators and cables are all in the high-voltage cable room or the high-voltage operation room, and the structure is relatively complicated; it is also prone to high-voltage condensation, creepage, and discharge. On-site inspection of the high-voltage side During inspection, it is impossible to observe, inspect and maintain intuitively. [0003] Such as figure 1 As s...

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Problems solved by technology

[0005] Aiming at the disadvantages of the existing technology, such as the difficulty in construction of the high-voltage cable of the wind power pre-installed substation transformer, inconvenient maintenance, and the impact of the arc of the load switch on the oil sample of the transformer, the problem to be solved by the present invention is to provide a method that can save the user's cable consumption and Remote operation sub-box combined transformer for cable trench construction, reducing maintenance and transportation costs

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