Indoor transformer substation

Abstract

The utility model discloses an indoor transformer substation, which comprises a main transformer arranged in a first room and a high-voltage power distribution device arranged in a second room, and the first room is positioned below the second room; the main transformer comprises an iron core, a low-voltage coil, a high-voltage coil and a shell; the low-voltage coil is wound on the iron core, and the high-voltage coil is sleeved outside the low-voltage coil; the iron core, the low-voltage coil and the high-voltage coil are contained in the shell, first insulating paint is arranged on the outer surface of the shell, and a second insulating paint layer and a flame-retardant insulating material layer are sequentially arranged on the inner surface of the shell. Due to the adoption of the technical scheme, compared with the prior art, not only is the problem that the occupied area of the transformer substation is large solved, but also the safety requirements of insulation and fire prevention are met.

Description

Technical Field

[0001] The utility model relates to the technical field of distribution devices, and particularly relates to an indoor substation. Background Art

[0002] The general layout of power systems and enterprise substations is as follows: the high-voltage distribution device adopts a gas-insulated metal-enclosed switchgear distribution device (GIS), the main transformer is arranged horizontally outdoors, and overhead conductors are used to connect the high-voltage distribution device and the main transformer. In addition, each distribution device must meet requirements such as safety distance and fire prevention distance. Therefore, the floor area of the substation is large, and it is only suitable for places where the construction land is not tight.

[0003] Chinese Utility Model Patent with Publication No. CN102361241A discloses a box-type substation, which solves the problem of large floor area of the substation by arranging each device in a three-layer box body respectively. Its disadvantage is that although the structure is compact and the floor area is greatly reduced, the insulation and fire prevention safety distance requirements between each device cannot be met, resulting in insufficient safety performance. Summary of the Invention

[0004] This application provides an indoor substation to solve the technical problem that the safety distance and fire prevention distance requirements cannot be met between each device of the existing indoor substation, resulting in insufficient safety performance.

[0005] To achieve the above object, this application adopts the following technical solutions.

[0006] An indoor substation includes a main transformer arranged in a first room and a high-voltage distribution device arranged in a second room, and the first room is located below the second room;

[0007] The main transformer includes an iron core, a low-voltage coil, a high-voltage coil, and a housing; the low-voltage coil is wound around the iron core, the high-voltage coil is sleeved outside the low-voltage coil; the housing houses the iron core, the low-voltage coil, and the high-voltage coil, a first insulating paint is provided on the outer surface of the housing, and a second insulating paint layer and a flame-retardant insulating material layer are sequentially provided on the inner surface of the housing.

[0008] In some embodiments, the housing is sealed and filled with perfluoroisobutyronitrile and carbon dioxide.

[0009] In some embodiments, an inorganic ceramic fiber paper layer is further provided between the second insulating paint layer and the flame-retardant insulating material layer.

[0010] In some embodiments, an adhesive layer is further provided between the inorganic ceramic fiber paper layer and the flame-retardant insulating material layer.

[0011] In some embodiments, the high-voltage power distribution device is located directly above the main transformer.

[0012] In some embodiments, the high-voltage power distribution device is connected to the main transformer by a cable.

[0013] In some embodiments, both ends of the cable are pluggable cable heads.

[0014] The present application has at least the following technical effects or advantages: It not only solves the problem of large floor area of the substation, but also meets the safety requirements of insulation and fire protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic structural diagram of an indoor substation in an embodiment of the present application;

[0016] Figure 2 It is a partial cross-sectional view schematic diagram of the outer shell in an embodiment of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] In order to better understand the above technical solutions, the above technical solutions will be described in detail below in conjunction with the accompanying drawings of the specification and specific embodiments.

[0018] Refer to Figure 1 , an indoor substation includes a main transformer 1 arranged in the first chamber 31 and a high-voltage power distribution device 2 arranged in the second chamber 32. The first chamber 31 is located below the second chamber 32. The high-voltage power distribution device 2 is located directly above the main transformer 1. The high-voltage power distribution device 2 is connected to the main transformer 1 by a cable 4, and both ends of the cable 4 are pluggable cable heads 5.

[0019] Specifically, the main transformer 2 includes an iron core, a low-voltage coil, a high-voltage coil, and an outer shell 6. The low-voltage coil is wound around the iron core, the high-voltage coil is sleeved outside the low-voltage coil, and the outer shell 6 houses the iron core, the low-voltage coil, and the high-voltage coil. As Figure 2 shown, a first insulating paint 71 is provided on the outer surface of the outer shell 6, and a second insulating paint layer 72, an inorganic ceramic fiber paper layer 73, an adhesive layer 74, and a flame-retardant insulating material layer 75 are sequentially provided on the inner surface of the outer shell 6. The flame-retardant insulating material layer 75 can be a nano-environmentally friendly halogen-free flame-retardant material. The outer shell 6 is sealed and filled with perfluoroisobutyronitrile and carbon dioxide inside.

[0020] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. An indoor substation, characterized in that: It includes a main transformer arranged in the first chamber and a high-voltage power distribution device in the second chamber, and the first chamber is located below the second chamber; The main transformer includes an iron core, a low-voltage coil, a high-voltage coil and a housing; the low-voltage coil is wound around the iron core, and the high-voltage coil is sleeved outside the low-voltage coil; the housing houses the iron core, the low-voltage coil and the high-voltage coil, and a first insulating paint is provided on the outer surface of the housing, and a second insulating paint layer and a flame-retardant insulating material layer are successively provided on the inner surface of the housing.

2. The indoor substation according to claim 1, characterized in that: The housing is sealed and filled with perfluoroisobutyronitrile and carbon dioxide inside.

3. The indoor substation according to claim 1 or 2, characterized in that: An inorganic ceramic fiber paper layer is also provided between the second insulating paint layer and the flame-retardant insulating material layer.

4. The indoor substation according to claim 3, wherein: An adhesive layer is also provided between the inorganic ceramic fiber paper layer and the flame-retardant insulating material layer.

5. The indoor substation according to claim 1 or 2, characterized in that: The high-voltage power distribution device is located directly above the main transformer.

6. The indoor substation according to claim 1 or 2, characterized in that: The high-voltage power distribution device is connected to the main transformer by a cable.

7. The indoor substation according to claim 6, characterized in that: Both ends of the cable are pluggable cable heads.

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