一种变压器下沉式紧凑型箱式变电站

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By using a submerged transformer design and a reasonable layout, the problem of the high height of traditional prefabricated substations is solved, achieving the adaptability and economy of compact prefabricated substations, suitable for the installation needs of urban centers and high-density commercial areas.

CN224520509UActive Publication Date: 2026-07-17SHENYANG HAOCHENG ELECTRICAL SCI & TECH

Patent Information

Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner: SHENYANG HAOCHENG ELECTRICAL SCI & TECH
Filing Date: 2025-08-15
Publication Date: 2026-07-17

AI Technical Summary

Technical Problem

Existing traditional prefabricated substations are quite tall, resulting in a large footprint in city centers and high-density commercial areas, which affects the lighting and views of residents and businesses, and is difficult to adapt to limited land resources.

Method used

The transformer is sunken into the foundation, reducing the height of the enclosure. The high-voltage room, low-voltage room and transformer room are set up independently through a reasonable layout. The instrument panel cabinet replaces the instrument box on the top of the high-voltage cabinet. The maintenance holes on the enclosure are eliminated and the maintenance holes are added to the foundation, achieving a compact layout of the equipment.

Benefits of technology

The overall height of the prefabricated substation is reduced, the floor space is decreased, the space utilization rate is improved, the overall cost is reduced, the compatibility with surrounding buildings is enhanced, planning conflicts are reduced, installation in narrow spaces is adapted, and the freedom of site selection is increased.

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Abstract

本实用新型涉及电力设备技术领域，公开了一种变压器下沉式紧凑型箱式变电站，包括变压器，所述变压器外壁设置有箱体，所述变压器底部固定连接有地基，所述箱体内部设置有隔板所述箱体内部设置有高压室、低压室及变压器室，所述箱体内部设置有高压室，所述高压室内部设置有仪表组屏柜和高压柜，所述箱体内部设置有低压室，所述低压室内部设置有低压柜，所述箱体内部设置有变压器室，所述变压器室内部设置有变压器、高压电缆、铜母排、软连接。本实用新型中，通过变压器下沉式设计，箱式变电站的高度大大降低，避免变电站遮挡住户、商户或其他建筑、设施等，从而使箱式变电站高度适配城市密集区域的空间限制，提升与周边建筑、设施的兼容性。

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Claims

1. A transformer sunken compact cubicle substation comprising a transformer (6), characterized in that: The transformer (6) has a housing (2) on its outer wall and a foundation (1) fixedly connected to its bottom. The housing (2) has a partition (15) inside and contains a high-voltage chamber (16), a low-voltage chamber (10) and a transformer chamber (12). The high-voltage chamber (16) contains an instrument panel cabinet (22) and a high-voltage cabinet (8). The low-voltage chamber (10) contains a low-voltage cabinet (3). The enclosure (2) contains a transformer chamber (12), which contains a transformer (6), a high-voltage cable (7), a copper busbar (4), and a flexible connector (5). One end of the high-voltage cable (7) is located on one side of the top of the transformer (6), and one end of the flexible connector (5) is located on the other side of the top of the transformer (6). The other end of the flexible connector (5) is located on the outer wall of the copper busbar (4), and the outer wall of the copper busbar (4) is located on the inner wall of the enclosure (2). The foundation (1) has an inspection hole (18) on top.

2. The transformer sunken compact cubicle substation according to claim 1, characterized in that: The high-voltage cabinet (8) is equipped with a high-voltage incoming cabinet (23), a high-voltage outgoing cabinet (24), and a high-voltage transformer outgoing cabinet (25). The high-voltage transformer outgoing cabinet (25) is connected to the high-voltage terminal of the transformer (6) by a high-voltage cable (7).

3. The transformer sunken compact cubicle substation according to claim 1, characterized in that: The outer wall of the high voltage cabinet (8) and the outer wall of the low voltage cabinet (3) are respectively located on both sides of the inner wall of the box (2). The low voltage cabinet (3) is equipped with a low voltage incoming switch (21), a low voltage outgoing switch (19), and a reactive power compensation device (20). The low voltage incoming switch (21) is connected to the low voltage terminal of the transformer (6) through a copper busbar (4) and a flexible connection (5).

4. The transformer sunken compact cubicle substation according to claim 1, characterized in that: The high-voltage chamber (16) is located on one side of the inner wall of the box (2), and the bottom of the high-voltage chamber (16) is provided with a high-voltage cable hole (17).

5. The transformer sunken compact cubicle substation according to claim 1, characterized in that: The outer wall of the partition (15) is provided on the side wall of the high voltage chamber (16), and the partition (15) is provided with a transformer outlet cable hole (26).

6. The transformer sunken compact cubicle substation according to claim 1, characterized in that: The outer wall of the transformer room (12) is located between the outer wall of the high voltage cabinet (8) and the outer wall of the low voltage cabinet (3). The outer wall of the transformer room (12) is located on the side wall of the partition (15). The transformer room (12) is equipped with a mesh door (13), a fan, and louvers (14).

7. The transformer sunken compact cubicle substation according to claim 1, characterized in that: The top of the enclosure (2) is provided with a cover (9), the outer wall of the low-voltage chamber (10) is provided on one side of the transformer chamber (12), and the bottom of the low-voltage chamber (10) is provided with a low-voltage cable hole (11).