CN115954874A

CN115954874A - Power supply equipment

Info

Publication number: CN115954874A
Application number: CN202310019908.6A
Authority: CN
Inventors: 张炳华; 李明江; 陈骁; 郭震
Original assignee: Hebei Sidage Data Technology Investment Co ltd
Current assignee: Hebei Sidage Data Technology Investment Co ltd
Priority date: 2023-01-06
Filing date: 2023-01-06
Publication date: 2023-04-11

Abstract

The application discloses electrical equipment is applied to data center, includes: the power transmission terminal, the power transformation terminal and the power utilization terminal; the power transmission end is used for being connected with power supply equipment with the output voltage of 220 kV; the power transmission terminal comprises a main transformer and at least two 220kV buses, wherein the main transformer is connected with the power transmission terminal through the 220kV buses, and the main transformer is configured to change the voltage drop of 220kV input by the power transmission terminal into 10kV; the power utilization end comprises a first incoming line and a second incoming line, the first ends of the first incoming line and the second incoming line are respectively connected with the main transformer, and the second ends of the first incoming line and the second incoming line are respectively used for being connected with the data center. The power supply equipment provided by the application reduces the manufacturing cost, improves the power supply capacity and meets the power supply requirement of the data center.

Description

Power supply equipment

Technical Field

The application relates to the technical field of power supply and distribution, in particular to a power supply device.

Background

With the high-speed development of the internet technology, related industries of education, medical treatment and work of design civilian life such as online education, online inquiry, remote office and the like are iterated by relying on the internet, and due to the well-spraying outbreak of the two industries, broadband resources and storage resources of the internet are more and more prominent day by day, so that the development scale of infrastructure of a data center is enlarged.

At present, the scale of a large-scale data center is far beyond the power supply capacity of one 110kv substation, but due to the shortage of interval resources on the power grid side and the limited line path resources, it is difficult to construct a plurality of 110kv substations for one data center. Therefore, it is urgently needed to provide a power supply device capable of improving the voltage level of a transformer substation and increasing the capacity of a single substation so as to meet the power supply requirement of a data center.

Disclosure of Invention

An object of this application is to provide a new solution for a power supply apparatus.

According to a first aspect of the present application, there is provided a power supply device applied to a data center, including:

the power transmission terminal is used for being connected with power supply equipment with the output voltage of 220 kV;

a power transmission terminal, wherein the power transmission terminal comprises a main transformer and at least two 220kV buses, the main transformer is connected with the power transmission terminal through the 220kV buses, and the main transformer is configured to change the voltage drop of 220kV input by the power transmission terminal into 10kV;

and the power utilization end comprises a first incoming line and a second incoming line, the first ends of the first incoming line and the second incoming line are respectively connected with the main transformer, and the second ends of the first incoming line and the second incoming line are respectively used for being connected with the data center.

Optionally, the first incoming line and the second incoming line respectively include at least two 10kV buses, the 10kV buses are respectively connected with a plurality of outgoing lines, and the outgoing lines are used for connecting the data center.

Optionally, the main transformer is provided with a plurality of lines, and the first incoming line and the second incoming line are respectively provided with a plurality of lines corresponding to the number of the main transformer.

Optionally, two 10kV buses of different main transformers are used for connecting the same data center.

Optionally, each of the 10kV bus is loaded by 50%; and under the condition that one of the 10kV buses is in power failure, the other 10kV bus is loaded by 100 percent.

Optionally, the main transformer is a high impedance transformer, and the short circuit current of the low voltage side of the main transformer is less than or equal to 25kA.

Optionally, each 10kV bus is further connected with a switch cabinet, and the switch cabinet is configured to be capable of controlling on/off of the corresponding 10kV bus.

Optionally, a single main transformer of less than or equal to 120MVA capacity of said main transformer, said main transformer being in the form of a conventional double winding.

Optionally, a single main transformer of the main transformer has a main capacity greater than 120MVA, and the main transformer is in a split winding form.

Optionally, the rated current of the switch cabinet is 3150/4000A, the rated short-time withstand current is 31.5/40kA, and the duration of the rated short-time withstand current is 4s.

According to an embodiment of the application, the power supply equipment directly reduces the voltage of 220kV at the power transmission end into the voltage class of 10kV through the main transformer, the voltage class of 110kV is omitted, the manufacturing cost of the power supply equipment is reduced, the power supply capacity of the power supply equipment is improved, and the power supply requirement of a data center is met.

Further features of the present application and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which is to be read in connection with the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the application and together with the description, serve to explain the principles of the application.

Fig. 1 is a schematic diagram of a power supply apparatus provided in the present application.

Description of reference numerals:

1. a power transmission terminal; 2. a power transformation terminal; 21. a 220kV bus; 22. a main transformer; 3. a power utilization end; 31. a first incoming line; 32. a second incoming line; 33. 10kV bus; 34. wire outgoing; 35. provided is a switch cabinet.

Detailed Description

Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise.

The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the application, its application, or uses.

Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.

In all examples shown and discussed herein, any particular value should be construed as exemplary only and not as limiting. Thus, other examples of the exemplary embodiments may have different values.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

As shown in fig. 1, according to a first aspect of the present application, there is provided a power supply device applied to a data center, including: the power transmission terminal 1, the power transformation terminal 2 and the power utilization terminal 3; the power transmission end 1 is used for being connected with power supply equipment with the output voltage of 220 kV; said power transmission terminal 2 comprises a main transformer 22 and at least two 220kV buses 21, said main transformer 22 is connected with said power transmission terminal 1 through said 220kV buses 21, said main transformer 22 is configured to change the 220kV voltage drop inputted by the power transmission terminal 1 to 10kV; the power utilization end 3 comprises a first incoming line 31 and a second incoming line 32, first ends of the first incoming line 31 and the second incoming line 32 are respectively connected with the main transformer 22, and second ends of the first incoming line 31 and the second incoming line 32 are respectively used for being connected with the data center.

Particularly, the data center provides a large calculation force through a plurality of servers, and therefore the power consumption requirement is correspondingly high. In the present embodiment, a power supply apparatus for supplying power to a data center has a power transmission terminal 1, a power transformation terminal 2, and a power consumption terminal 3. The power transmission terminal 1 can be a power supply platform such as a substation and can directly output a 220 kV-class voltage externally, the power transformation terminal 2 is connected with the power transmission terminal 1 through at least two 220kV buses 21, and directly changes the 220 kV-class voltage drop output by the power transmission terminal 1 into a 10 kV-class voltage through the main transformer 22, and then inputs the 10kV voltage into the electric equipment of the data center through the first incoming line 31 and the second incoming line 32 of the power utilization terminal 3, so as to meet the power utilization requirement of the electric equipment.

The power supply equipment provided in the embodiment directly changes the voltage drop of 220kV into the voltage of 10kV, improves the voltage level of the power transmission terminal 1, omits the voltage drop process of 110kV, cancels useless voltage levels, greatly reduces the manufacturing cost of the whole power supply equipment, improves the power supply capacity of the power transmission terminal 1, saves power grid side and municipal resources, and meets the power supply requirement of the current data center. In addition, 220kV power receiving is adopted, so that the electric charge can be greatly saved in the whole life cycle of the power supply equipment.

Further, in this embodiment, parameters such as the number of connections of the 220kV bus 21 can be adaptively adjusted according to the important grade and scale of the power transmission terminal 1, and parameters such as the form, number, and capacity of the main transformer 22 can also be adjusted and adapted according to the actual requirements of the data center, thereby further improving the reliability and adaptability of the power supply equipment.

Optionally, the first incoming line 31 and the second incoming line 32 respectively include at least two 10kV buses 33, the 10kV buses 33 are respectively connected with a plurality of outgoing lines 34, and the outgoing lines 34 are used for connecting the data center.

In particular, in this embodiment, the first incoming line 31 and the second incoming line 32 may each comprise at least two 10kV busbars 33. For example, when the main transformer 22 is a split winding type transformer, the low voltage side thereof is in a form of a two-branch connection, i.e., the 10kV winding of each main transformer 22 is connected to two 10kV bus bars 33. The rated current and the short-time withstand current of the main transformer 22 can be adjusted according to the actual requirements of the data center. For example, when the main transformer 22 has a capacity of 240/120/120MVA, the rated current is 4000A; the short-time withstand current can be adjusted according to actual conditions. According to the power supply equipment provided by the embodiment, on the premise that standard equipment on the low-voltage side (10 kV side) of the main transformer 22 is not changed, the arrangement of a 10kV bus 33 sectional cabinet in the prior art can be cancelled through the adjustment of the main deformation form and the optimization of the main wiring form, the whole capacity of the main transformer 22 is fully utilized, and the reliable power supply requirement of a data center is guaranteed.

Alternatively, the main transformer 22 is provided with a plurality of lines, and the first incoming line 31 and the second incoming line 32 are respectively provided with a plurality of lines corresponding to the number of the main transformer 22.

Specifically, in the present embodiment, a plurality of main transformers 22 may be provided, for example, 2, 3, 4, etc., and each main transformer 22 is provided with a first incoming line 31 and a second incoming line 32. In practical application, the data center can be connected to the outgoing lines 34 under different main transformers 22 at the same time, so that when one main transformer 22 fails, the other main transformer 22 can also supply power normally, and the reliability of the power supply equipment for supplying power to the data center is improved.

Optionally, two 10kV buses 33 of different main transformers 22 are used to connect the same data center.

Specifically, in this embodiment, the two 10kV buses 33 of different main transformers 22 may be mutually standby, that is, the data center may be connected to the outgoing line 34 of the 10kV buses 33 under different main transformers 22 at the same time, on one hand, the multiple main transformers 22 can provide the power supply requirement for meeting the more equipment, and on the other hand, the different 10kV buses 33 that are mutually standby come from different main transformers 22, so that the reliability of the power supply equipment is improved, and the data center is prevented from causing economic loss due to power failure.

Optionally, each of the 10kV bus 33 is loaded by 50%; and under the condition that one 10kV bus 33 is in power failure, the other 10kV bus 33 is loaded by 100 percent.

Specifically, in practical applications, that is, when the power supply equipment is in a normal operation state, each 10kV bus 33 can respectively bear 50% of power supply load of the data center, and when one 10kV bus 33 is in an abnormal operation state, the other 10kV bus 33 bears all load of the data center, so that the reliability of power supply is improved.

Optionally, the main transformer 22 is a high impedance transformer, and the short circuit current of the low voltage side of the main transformer 22 is less than or equal to 25kA.

Specifically, in the present embodiment, the main transformer 22 may be in the form of a high impedance transformer according to the magnitude of the rated short-time withstand current of the 10kV electric equipment, so as to make the short-circuit current of the low-voltage side power consumption end 3 of the main transformer 22 less than or equal to 25kA, avoid the short circuit of the power consumption end 3 due to the excessive current, and further improve the reliability of the power supply equipment. Further, the short-circuit current on the low-voltage side can be controlled within 20kA in the form of a high-impedance transformer.

Optionally, each 10kV bus 33 is further connected to a switch cabinet 35, and the switch cabinet 35 is configured to be capable of controlling on/off of the corresponding 10kV bus 33.

Specifically, in practical application, each 10kV bus 33 is further connected with a switch cabinet 35 capable of controlling on/off of the circuit, so as to facilitate power-off maintenance and the like of the power consumption terminal 3. In general, the rated current of the switch cabinet 35 may be set to 3150A or 4000A, the rated short-time withstand current is controlled to 31.5kA or 40kA, and the duration of the rated short-time withstand current is 4s.

Optionally, a single main transformer capacity of the main transformer 22 is less than or equal to 120MVA, the main transformer 22 taking the form of a conventional double winding.

Specifically, in the present embodiment, the form of the main transformer 22 may be set according to the main capacity of each main transformer 22. When the capacity of a single main transformer is less than or equal to 120MVA, the main transformer 22 in the conventional double-winding form can be adopted, so that the power consumption requirement of the power consumption end 3 can be met on one hand, and on the other hand, the main transformer 22 in the conventional winding form has lower cost, and the manufacturing cost of power supply equipment is reduced. For example, in one embodiment, a conventional dual winding configuration of 220/10.5kV is used when the main transformer capacity is 100MVA or 120MVA, wherein 220kV is the voltage on the high side of the main transformer 22 and 10.5kV is the voltage on the low side of the main transformer 22. Wherein, the voltage of the low-voltage side is slightly higher than the 10kV power demand in consideration of the voltage drop problem.

Optionally, a single main transformer of the main transformer 22 has a main capacity greater than 120MVA, and the main transformer 22 is in the form of a split winding.

Specifically, in the present embodiment, when the main transformer 22 has a single main transformer capacity greater than 120MVA, such as 150MVA, 180MVA or 240MVA, a high impedance transformer form is required. In the present embodiment, the split winding form is 220/10.5/10.5kV, wherein 220kV is the voltage on the high-voltage side of the main transformer 22, and 10.5kV is the voltages on the two low-voltage sides of the main transformer 22.

In order to make the technical solutions of the present application clearer, the following specific examples are provided for illustration.

As shown in fig. 1, a 3 × 180MVA power supply apparatus is taken as an example.

In this embodiment, the high voltage side of the main transformer 22 employs a dual 220kV bus 21, the main transformer 22 employs a 220/10.5kV, 180/90/90MVA split winding transformer, and the half-cross short circuit impedance is 45%. The main transformer capacity can be adjusted according to actual needs, such as 240/120/120MVA.

The low voltage side of the main transformer 22 is in a double branch connection mode, namely, the 10kV winding of each main transformer is connected with two sections of 10kV buses 33, and the inlet wires (the first inlet wire 31 and the second inlet wire 32) of the main transformer 22 are separated by rated current 3150A and short-time endurable current 31.5kA/4s. The incoming line interval rated current of the main transformer 22 can be adjusted according to actual needs, for example, when the main transformer capacity is 240/120/120MVA, the rated current is 4000A; the short-time tolerance current is adjusted according to actual conditions;

in this embodiment, the 10kV bus bar 33 has 12 segments in total, and no segment is provided between each segment. 10kV buses 33 under different main transformers are mutually standby sections so as to meet the requirement of the data center on power supply reliability.

In the above embodiments, the differences between the embodiments are described in emphasis, and different optimization features between the embodiments can be combined to form a better embodiment as long as the differences are not contradictory, and further description is omitted here in consideration of brevity of the text.

Although some specific embodiments of the present application have been described in detail by way of example, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present application. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the present application. The scope of the application is defined by the appended claims.

Claims

1. A power supply device applied to a data center is characterized by comprising:

2. The power supply equipment according to claim 1, wherein the first incoming line and the second incoming line respectively comprise at least two 10kV buses, the 10kV buses are respectively connected with a plurality of outgoing lines, and the outgoing lines are used for being connected with the data center.

3. The power supply apparatus according to claim 2, wherein a plurality of the main transformers are provided, and a plurality of the first incoming wires and a plurality of the second incoming wires are provided corresponding to the number of the main transformers, respectively.

4. The power supply apparatus according to claim 3, wherein two of said 10kV buses of different said main transformers are used for connecting to the same said data center.

5. The power supply apparatus of claim 4, wherein each of said 10kV buses is loaded with 50%; and under the condition that one of the 10kV buses is in power failure, the other 10kV bus is loaded by 100 percent.

6. The power supply apparatus according to claim 3, wherein said main transformer is a high impedance transformer and the short circuit current of the low voltage side of said main transformer is less than or equal to 25kA.

7. The power supply equipment according to claim 3, wherein each 10kV bus is further connected with a switch cabinet, and the switch cabinet is configured to control on/off of the corresponding 10kV bus.

8. The power supply apparatus of claim 7 wherein said main transformer has a single main transformer capacity of less than or equal to 120MVA, said main transformer being in the form of a conventional dual winding.

9. The power supply apparatus of claim 7 wherein said main transformer has a single main transformer capacity greater than 120MVA, said main transformer being in the form of split windings.

10. Power supply device according to claim 8 or 9, characterized in that the switch cabinet has a rated current of 3150/4000A, a rated short-time withstand current of 31.5/40kA and a rated short-time withstand current of 4s duration.