CN204885955U - Complete indoor two -layer transformer substation of integrative transformer of 35kV - Google Patents

Abstract

The utility model provides an indoor two-story substation with 35kV integrated transformer. The first floor of the substation is provided with: three transformer rooms, which are respectively used for setting up a 35kV integrated transformer; Electric device; 10kV power distribution device room, used to set up 10kV power distribution device; wherein the 35kV power distribution device room and the 10kV power distribution device room are adjacently arranged on one side, and the three transformer rooms are adjacent to each other Set on the opposite side, the 10kV power distribution device room is directly adjacent to the three transformer rooms; the three transformer rooms, the 35kV power distribution device room and the 10kV power distribution device room are all equipped with Connected import and export.

Description

A 35kV integrated transformer whole indoor two-story substation

technical field

The utility model relates to the field of structural design of substations, in particular to a two-story substation with a 35kV integrated transformer and an indoor whole.

Background technique

The substation is the place where the voltage is changed, controlled and distributed. The transformer is the main equipment of the substation. In addition, the substation also includes power distribution equipment, energy storage equipment, secondary equipment and other equipment.

Due to the large size of the main equipment used in the substation, the floor area of the substation is usually large, and the designer usually needs to spend a lot of time designing the structure of the substation according to the pre-planned land area, so that the structural differences between the various substations are relatively large. Large, and the designed substation may not be suitable for the surrounding conditions. For example, the open-air structure will cause noise interference, or the unreasonable location of each equipment room will lead to problems such as chaotic cable arrangement in the substation.

Utility model content

Therefore, the technical problem to be solved by the utility model is to provide a substation structure to save the land area and reduce the impact on the surrounding environment.

The utility model provides an indoor two-story substation with 35kV integrated transformer. The first floor of the substation is provided with: three transformer rooms, which are respectively used for setting up a 35kV integrated transformer; Electric device; 10kV power distribution device room, used to set up 10kV power distribution device; wherein the 35kV power distribution device room and the 10kV power distribution device room are adjacently arranged on one side, and the three transformer rooms are adjacent to each other Set on the opposite side, the 10kV power distribution device room is directly adjacent to the three transformer rooms; the three transformer rooms, the 35kV power distribution device room and the 10kV power distribution device room are all equipped with Connected entrance and exit; the second floor of the substation is provided with: three capacitor rooms for setting capacitors for compensating reactive power; secondary equipment rooms for setting secondary equipment; the three capacitor rooms Adjacently arranged on one side, the secondary equipment room and the three capacitor rooms are set on the same side, the 10kV power distribution device room and the 35kV power distribution device room are located between the secondary equipment room and the three capacitor rooms below the three capacitor chambers.

Preferably, the transformer room is a full-height structure.

Preferably, the entrance and exit of the transformer room are ventilation louver doors.

Preferably, a cable half-layer is provided under the first layer of the substation for laying power cables.

Preferably, the substation is further provided with a cable interlayer, and the cable interlayer is arranged between the secondary equipment room and the 35kV power distribution device room for laying power cables.

Preferably, the power cable is connected to corresponding equipment through a cable tray.

Preferably, the wall of the transformer room is a firewall.

Compared with the existing technology, the 35kV integrated transformer provided by the utility model adopts an all-indoor design for the two-story substation, which can reduce noise and conform to urban planning; each equipment room is equipped with an entrance and exit directly connected to the outside. Improve the safety of the substation, and can omit the pedestrian passage in the substation to save the land area, thereby saving land investment, and at the same time speed up the design and construction of the regional power grid project, improve the construction quality, and promote the construction of a resource-saving and environment-friendly society .

Description of drawings

In order to make the content of the utility model easier to understand clearly, the utility model will be described in further detail below according to specific embodiments of the utility model in conjunction with the accompanying drawings, wherein

Fig. 1 is a floor plan structure diagram of a 35kV integrated transformer whole indoor two-story substation provided by the embodiment of the utility model;

Fig. 2 is the second-floor plan structure diagram of the 35kV integrated transformer whole-indoor two-story substation provided by the embodiment of the utility model;

Fig. 3 is an overall side view of the 35kV integrated transformer whole indoor two-story substation provided by the embodiment of the utility model.

Detailed ways

The embodiment of the utility model provides a 35kV integrated transformer full indoor two-story substation, Fig. 1, Fig. 2 and Fig. 3 show the structure of the substation provided by the utility model, each equipment room and device room described in the utility model The devices in the figure are commonly used devices in the substation. Those skilled in the art can understand the connection relationship between each device, so the connection cables between each device are omitted in the figure. As shown in Figure 1, the first floor of the substation is equipped with:

The three transformer rooms 11 are respectively used to install a 35kV integrated transformer; the walls of the three transformer rooms can preferably be firewalls.

35kV power distribution device room 12, used to install 35kV power distribution device;

10kV power distribution device room 13, used to install 10kV power distribution device;

Wherein the 35kV power distribution device room 12 and the 10kV power distribution device room 13 are adjacently arranged on one side, the three transformer rooms 11 are adjacently arranged on the opposite side, and the 10kV power distribution device room 12 and the The three transformer rooms 11 are all directly adjacent; the three transformer rooms 11, the 35kV power distribution device room 12 and the 10kV power distribution device room 13 are all provided with inlets and outlets communicating with the outside of the substation; the transformer room 11 and The other equipment rooms can be completely isolated, and there is no access and exit.

As shown in Figure 2, the second layer of the substation is equipped with:

Three capacitor chambers 21 for setting capacitors for compensating reactive power,

The secondary equipment room 22 is used for setting secondary equipment;

The three capacitor chambers 21 are adjacently arranged on one side, the secondary equipment chamber 22 is arranged on the same side as the three capacitor chambers 21, the 10kV power distribution device chamber 14 and the 35kV power distribution The electrical device room 13 is located below the secondary equipment room 22 and the three capacitor rooms 21 . There are also two stairs for people to pass in the substation, which are respectively set on the two sides of the room.

The above-mentioned substation has 3 incoming lines and 24 outgoing lines. The main scheme of substation:

(1) Transformer: A 35kV double-winding integrated transformer with a capacity of 31.5MVA is selected for indoor layout.

(2) 35kV power distribution device: indoor switch cabinets are arranged in a single row, and the cables go out.

(3) 10kV power distribution device: indoor switch cabinets are arranged in double rows, and the cables go out.

(4) Capacitor: The reactive power compensation capacitor in the station is installed on the 10kV side. The capacity is 3×(2+2)Mvar, and the cable enters the line.

(5) Grounding substation: use a complete set of grounding substation arc-suppression coil with a capacity of 400MVA, of which the grounding substation also serves as a station substation, and the cable enters the line.

Substation secondary main scheme:

(1) Transformer: Conventional transformer, no merging unit, no smart terminal;

(2) The 35kV and main transformer adopts an integrated protection, measurement and control device, and the 10kV adopts an all-in-one device for protection, measurement and control, and measurement;

(3) Equipped with independent standby automatic switching and low cycle load shedding device;

(4) The integrated power supply system in the station is adopted.

The scope of application of the above substations includes:

(1) It is in the position of a regional intermediate variable in the system and has a partial power through;

(2) Projects with many cable outlets;

(3) Urban areas with high load density, tight land use and high environmental requirements;

(4) Applicable to places in urban areas that do not require high storey heights;

(5) Voltage level 35kV/10kV;

(6) Transformer capacity 31.5MVA.

The 35kV integrated transformer provided by the utility model is fully indoor and the two-story substation adopts an all-indoor design, which can reduce noise and conform to urban planning; each equipment room is equipped with an inlet and outlet directly connected to the outside, which improves the safety of the substation. In addition, pedestrian passages in the station can be omitted to save land area, thereby saving land investment. At the same time, the speed of regional power grid engineering design and construction is accelerated, the construction quality is improved, and the construction of a resource-saving and environment-friendly society is promoted.

In order to fully dissipate heat from the equipment in the transformer room, thereby improving the safety of the substation, the inlet and outlet of the transformer room are preferably ventilated louver doors; the transformer room is preferably a full-height structure. The full height is also called the upper sky, which is a term in the field of construction. It means that the upper floor of the two-story building has no floor, and it directly leads from the bottom to the top. This structure is conducive to the heat dissipation of indoor equipment.

In order to further improve the safety of the substation, as shown in Figure 3, a cable half-layer 31 can also be provided below the first layer of the substation for laying power cables, for example, a The space is used solely for laying primary cables. The substation is further provided with a cable interlayer 32, and the cable interlayer 32 is arranged between the secondary equipment room 22 and the 35kV power distribution device room 12 for laying power cables. The power cables can be connected to corresponding equipment (that is, equipment in each equipment room or device room) through cable trays. The preferred solution above can meet the laying requirements of the primary and secondary outlet cables, realize the penetration of the cable laying, and can further reduce the area of the substation while improving the safety of the substation.

Apparently, the above-mentioned embodiments are only examples for clear description, rather than limiting the implementation. For those of ordinary skill in the art, other changes or changes in different forms can be made on the basis of the above description. It is not necessary and impossible to exhaustively list all the implementation manners here. And the obvious changes or variations derived therefrom are still within the scope of protection of the utility model.

Claims (7)

1. A kind of 35kV integrated transformer whole indoor two-layer substation, it is characterized in that, the first floor of described substation is provided with: three transformer rooms, are respectively used to arrange 35kV integrated transformer; 35kV power distribution device; 10kV power distribution device room, used to set up 10kV power distribution device; wherein the 35kV power distribution device room and the 10kV power distribution device room are adjacently arranged on one side, and the three transformer rooms are in phase The 10kV power distribution device room is directly adjacent to the three transformer rooms; the three transformer rooms, the 35kV power distribution device room and the 10kV power distribution device room are all equipped with the The entrance and exit of the external connection of the substation; The second floor of the substation is provided with: three capacitor rooms for setting capacitors for compensating reactive power; secondary equipment rooms for setting secondary equipment; wherein the three capacitor rooms are adjacently arranged on On one side, the secondary equipment room and the three capacitor rooms are set on the same side, and the 10kV power distribution device room and the 35kV power distribution device room are located between the secondary equipment room and the three capacitor rooms below. 2. The substation according to claim 1, characterized in that, the transformer room is a double-height structure. 3. The substation according to claim 1, characterized in that, the entrance and exit of the transformer room are ventilation louver doors. 4. The substation according to claim 1, characterized in that a cable half-layer is provided under the first layer of the substation for laying power cables. 5. The substation according to claim 1, characterized in that, the substation is also provided with a cable interlayer, and the cable interlayer is arranged between the secondary equipment room and the 35kV power distribution device room for laying power cable. 6. The substation according to claim 4 or 5, characterized in that the power cables are connected to corresponding equipment through cable trays. 7. The substation according to claim 1, wherein the wall of the transformer room is a firewall.