阅读说明：本技术 一种连接结构优化的220kV户内变电站 (220kV indoor transformer substation with optimized connection structure ) 是由 崔鲁 卢小钟 王勇 王慧 吴昊 孙国平 周仰东 杨阳 孙杰 于 2019-08-08 设计创作，主要内容包括：本发明涉及一种连接结构优化的220kV户内变电站,包括具有屋顶的建筑物、主变压器、220kV GIS设备、110kV GIS设备、10kV配电设备；主变压器配置有油气套管；220kV GIS设备的主变进线侧通过220kV GIL气管与主变压器的油气套管相连接,110kV GIS设备的主变进线侧通过110kV GIL气管与主变压器的油气套管相连接。本发明的户内变电站具有结构布置合理、紧凑,主要设备连接清晰、可靠的优点,便于工作人员巡检和维修、设备运输等作业,可以提高设备稳定性和操作安全性。(The invention relates to a 220kV indoor transformer substation with an optimized connection structure, which comprises a roof building, a main transformer, 220kV GIS equipment, 110kV GIS equipment and 10kV distribution equipment; the main transformer is provided with an oil gas casing pipe; the main transformer inlet side of 220kV GIS equipment is connected with the oil gas casing pipe of main transformer through 220kV GIL gas pipe, and the main transformer inlet side of 110kV GIS equipment is connected with the oil gas casing pipe of main transformer through 110kV GIL gas pipe. The indoor transformer substation has the advantages of reasonable and compact structural arrangement, clear and reliable connection of main equipment, convenience for operation of inspection and maintenance of workers, equipment transportation and the like, and can improve the stability and the operation safety of the equipment.)

1. The utility model provides an indoor transformer substation of 220kV that connection structure optimizes which characterized in that: the indoor transformer substation comprises a roof building, a main transformer, 220kV GIS equipment, 110kV GIS equipment and 10kV distribution equipment, wherein the main transformer, the 220kV GIS equipment, the 110kV GIS equipment and the 10kV distribution equipment are arranged in the building, and the indoor transformer substation is characterized in that: the main transformer is provided with an oil gas casing pipe; the main transformer inlet side of the 220kV GIS equipment is connected with an oil gas casing pipe of the main transformer through a 220kV GIL gas pipe, and the main transformer inlet side of the 110kV GIS equipment is connected with the oil gas casing pipe of the main transformer through a 110kV GIL gas pipe; the 220kV GIL gas pipe comprises a first 220kV gas pipe section, a second 220kV gas pipe section and a third 220kV gas pipe section which are sequentially connected, the first 220kV gas pipe section extends upwards to the upper part of the roof from the side of a main transformer incoming line of 220kV GIS equipment, the second 220kV gas pipe section is arranged above the roof and extends to the corresponding position of the main transformer from the corresponding position of the 220kV GIS equipment, and the third 220kV gas pipe section extends downwards to a gas-oil casing pipe of the main transformer from the upper part of the roof; the 110kV GIL gas pipe comprises a first 110kV gas pipe section, a second 110kV gas pipe section and a third 110kV gas pipe section which are sequentially connected, wherein the first 110kV gas pipe section is extended to the lower part of the roof from the side of a main transformer inlet wire of the 110kVGIS equipment, the second 110kV gas pipe section is arranged below the roof and is extended to the corresponding position of the main transformer from the corresponding position of the 110kV GIS equipment, and the third 110kV gas pipe section is extended to an oil gas sleeve of the main transformer from the lower part of the roof.

2. The connection structure optimized 220kV indoor substation of claim 1, characterized in that: establishing a rectangular coordinate system in the horizontal direction in the building, dividing the space in the building into a first space, a second space and a third space which are arranged in sequence along the Y-axis direction of the rectangular coordinate system, arranging a main transformer and a radiator chamber at the first space, and arranging the main transformer and a radiator thereof in the main transformer and radiator chamber, setting a 10kV equipment room at the second space, and setting the 10kV distribution equipment in the 10kV equipment room, dividing the third space into a first subspace and a second subspace which are arranged in sequence along the X-axis direction of the rectangular coordinate system, arranging a 220kV equipment room at the first subspace, and arranging the 220kV GIS equipment in the 220kV equipment room, and arranging a 110kV equipment room at the second subspace, and arranging the 110kV GIS equipment in the 110kV equipment room.

3. The connection structure optimized 220kV indoor substation of claim 2, characterized in that: the main transformer and radiator chamber, the 10kV equipment chamber, the 220kV equipment chamber and the 110kV equipment chamber are divided from the building through a plurality of walls.

4. The connection structure optimized 220kV indoor substation of claim 3, characterized in that: the roof is provided with a top perforation for penetrating the 220kV GIL air pipe, the wall is provided with a wall perforation for penetrating the 110kV GIL air pipe, and the top perforation is provided with a waterproof plugging structure.

5. A connection-structurally optimized 220kV indoor substation according to claim 1 or 2, characterized in that: a rain cover and/or a waterproof slope protection are/is arranged on the roof.

6. A connection-structurally optimized 220kV indoor substation according to claim 1 or 2, characterized in that: the main transformer is equipped with a lifting seat.

7. The connection structure optimized 220kV indoor substation of claim 6, wherein: the high-pressure side of the main transformer adopts a vertical type lifting seat, and the low-pressure side of the main transformer adopts an inclined type lifting seat.

8. The connection structure optimized 220kV indoor substation of claim 2, characterized in that: an overhaul channel is formed in the 10kV equipment room, and the part, located in the 10kV equipment room, of the 110kV GIL air pipe is laid along the overhaul channel.

9. The connection structure optimized 220kV indoor substation of claim 2, characterized in that: the 10kV distribution equipment is arranged in a single-row and/or multi-row mode in the 10kV equipment room.

10. A connection-structurally optimized 220kV indoor substation according to claim 1 or 2, characterized in that: the story height of the building is set to at least 6.5 m.

Technical Field

The invention belongs to the technical field of power transmission and transformation engineering design, and particularly relates to a layout scheme of a 220kV indoor transformer substation with an optimized connection structure.

Background

With the continuous improvement of the industrialization level, the urban scale is gradually enlarged, the power load density is increased year by year, and the construction of a transformer substation in an urban load center becomes a necessary trend. With the requirements of saving resources and being adaptive to urban planning and environment, under the condition of investment allowance, compact arrangement of GIS equipment and indoor arrangement scheme are required to meet the requirements of factors such as land, environment, outgoing line conditions and the like and safe production.

At present, a main transformer and 220kV and 110kV GIS equipment are generally connected by a cable in the conventional 220kV transformer substation. Under this scheme, because the indoor high, the middling pressure side electrified body of transformer body exposes, for the steady operation of guarantee equipment and staff's safety, must reserve sufficient safe distance to increase the area of transformer substation, increased investment cost, and influenced the overall planning in city. In addition, the number of cables of each voltage class in the cable interlayer in the station is too large, so that the cables are easy to intersect, and hidden troubles are buried for later operation and maintenance.

Therefore, with the general application of the 220kV all-indoor transformer substation, a clearer main equipment connection mode, a more compact arrangement scheme and a more reasonable layer height setting are urgently needed, the space utilization rate of the transformer substation is improved on the premise that stable and reliable equipment and operation and maintenance personnel are safe, and the investment of the whole project is reduced.

Disclosure of Invention

The invention aims to provide a 220kV indoor transformer substation which is compact and reasonable in arrangement, clear in main equipment connection and reliable in connection structure optimization.

In order to achieve the purpose, the invention adopts the technical scheme that:

The indoor transformer substation comprises a roof building, a main transformer, 220kV GIS equipment, 110kV GIS equipment and 10kV distribution equipment, wherein the main transformer, the 220kV GIS equipment, the 110kV GIS equipment and the 10kV distribution equipment are all arranged in the building, and the main transformer is provided with an oil-gas casing; the main transformer inlet side of the 220kV GIS equipment is connected with an oil gas casing pipe of the main transformer through a 220kV GIL gas pipe, and the main transformer inlet side of the 110kV GIS equipment is connected with the oil gas casing pipe of the main transformer through a 110kV GIL gas pipe; the 220kV GIL gas pipe comprises a first 220kV gas pipe section, a second 220kV gas pipe section and a third 220kV gas pipe section which are sequentially connected, the first 220kV gas pipe section extends upwards to the upper part of the roof from the side of a main transformer incoming line of 220kV GIS equipment, the second 220kV gas pipe section is arranged above the roof and extends to the corresponding position of the main transformer from the corresponding position of the 220kV GIS equipment, and the third 220kV gas pipe section extends downwards to a gas-oil casing pipe of the main transformer from the upper part of the roof; the 110kV GIL gas pipe comprises a first 110kV gas pipe section, a second 110kV gas pipe section and a third 110kV gas pipe section which are sequentially connected, wherein the first 110kV gas pipe section is formed by upwards extending a main transformer inlet wire side of 110kV GIS equipment to the lower part of a roof, the second 110kV gas pipe section is arranged below the roof and is formed by extending the corresponding position of the 110kV GIS equipment to the corresponding position of a main transformer, and the third 110kV gas pipe section is formed by downwards extending the lower part of the roof to an oil gas sleeve of the main transformer

Preferably, a rectangular coordinate system is established in a horizontal direction in the building, a space in the building is divided into a first space, a second space and a third space which are sequentially arranged along a Y-axis direction of the rectangular coordinate system, arranging a main transformer and a radiator chamber at the first space, and arranging the main transformer and a radiator thereof in the main transformer and radiator chamber, setting a 10kV equipment room at the second space, and setting the 10kV distribution equipment in the 10kV equipment room, dividing the third space into a first subspace and a second subspace which are arranged in sequence along the X-axis direction of the rectangular coordinate system, arranging a 220kV equipment room at the first subspace, and arranging the 220kV GIS equipment in the 220kV equipment room, and arranging a 110kV equipment room at the second subspace, and arranging the 110kV GIS equipment in the 110kV equipment room.

preferably, the main transformer and radiator chamber, the 10kV equipment chamber, the 220kV equipment chamber and the 110kV equipment chamber are partitioned by a plurality of walls in the building.

Preferably, the roof is provided with a top perforation for penetrating the 220kV GIL air pipe, the wall is provided with a wall perforation for penetrating the 110kV GIL air pipe, and the top perforation is provided with a waterproof plugging structure. .

Preferably, a rain cover and/or a waterproof slope protection is/are arranged on the roof.

Preferably, the main transformer is equipped with a lifting socket.

Preferably, a vertical lifting seat is adopted on the high-pressure side of the main transformer, and an inclined lifting seat is adopted on the low-pressure side of the main transformer.

Preferably, a service passage is formed in the 10kV equipment room, and a portion of the 110kV GIL gas pipe located in the 10kV equipment room is laid along the service passage.

Preferably, the 10kV distribution equipment is arranged in a single-column and/or multi-column mode in the 10kV equipment room.

Preferably, the story height of the building is set to at least 6.5 m.

Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages: the indoor transformer substation has the advantages of reasonable and compact structural arrangement, clear and reliable connection of main equipment, convenience for operation of inspection and maintenance of workers, equipment transportation and the like, and can improve the stability and the operation safety of the equipment.

Drawings

Fig. 1 is a plan layout of 220kV GIL gas pipes in an indoor substation of the present invention.

Fig. 2 is a plan layout of 110kV GIL gas pipes in an indoor substation of the present invention.

Fig. 3 is an enlarged sectional layout view of a 220kV GIL gas pipe in an indoor substation of the present invention.

Fig. 4 is an enlarged cross-sectional layout of a 110kV GIL gas pipe in an indoor substation of the present invention.

In the above drawings: 1. a building; 2. a roof; 4. a main transformer; 5. 220kV GIS equipment; 6. 110kV GIS equipment; 7. 10kV power distribution equipment; 8. a main transformer and a radiator chamber; 9. a 10kV equipment room; 10. a 220kV equipment room; 11. a 110kV equipment room; 12. a 220kV GIL gas pipe; 13. a 110kV GIL trachea; 14. a first 220kV gas pipe section; 15. a second 220kV gas pipe section; 16. a third 220kV gas pipe section; 17. a first 110kV gas pipe section; 18. a second 110kV gas pipe section; 19. a third 110kV gas pipe section; 20. a heat sink.

Detailed Description

The invention will be further described with reference to examples of embodiments shown in the drawings to which the invention is attached.