CN219760641U

CN219760641U - Power supply apparatus

Info

Publication number: CN219760641U
Application number: CN202320042958.1U
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: 2023-09-26
Anticipated expiration: 2033-01-06

Abstract

The utility model relates to an electrical device, applied to a data center, comprising: 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 transformation end comprises a main transformer and at least two 220kV buses, the main transformer is connected with the power transmission end through the 220kV buses, and the main transformer is configured to be capable of changing the voltage drop of 220kV input by the power transmission end 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 are respectively used for being connected with the data center. The power supply equipment provided by the utility model reduces the manufacturing cost, improves the power supply capacity and meets the power supply requirement of the data center.

Description

Power supply apparatus

Technical Field

The utility model relates to the technical field of power supply and distribution, in particular to power supply equipment.

Background

With the high-speed development of internet technology, related industries of education, medical treatment and work of design folk life such as online education, online consultation and remote office are iterated by means of the internet, and the outbreak of blowout of two industries causes the broadband resources and storage resources of the internet to be more remarkable, so that the development scale of the infrastructure of the data center is enlarged.

At present, the large-scale data center has far exceeding the power supply capacity of one 110kv transformer substation, but because of the shortage of grid side interval resources, the line path resources are limited, and a plurality of 110kv transformer substations are difficult to build for one data center. Therefore, it is highly desirable to provide a power supply device capable of increasing the voltage class of a 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 the present utility model is to provide a new solution for a power supply device.

According to a first aspect of the present utility model, there is provided a power supply apparatus for use in a data center, comprising:

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 is configured to be capable of changing 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 incoming line and the first end of the second incoming line are respectively connected with the main transformer, and the second end is 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, and the first incoming line and the second incoming line are provided with a plurality of corresponding to the number of the main transformers respectively.

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

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

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, a switch cabinet is further connected to each 10kV busbar, and the switch cabinets are configured to be capable of controlling on/off of the corresponding 10kV busbar.

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

Optionally, the single main transformer capacity of the main transformer is larger than 120MVA, and the main transformer adopts a split winding mode.

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

According to one embodiment of the utility model, the power supply equipment provided by the utility model directly reduces the 220kV voltage of the power transmission end into the voltage class of 10kV through the main transformer, so that the 110kV voltage class 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.

Other features of the present utility model and its advantages will become apparent from the following detailed description of exemplary embodiments of the utility model, which proceeds with reference to the accompanying drawings.

Drawings

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

Fig. 1 is a schematic diagram of a power supply device provided by the present utility model. .

Reference numerals illustrate:

1. a power transmission end; 2. a power conversion terminal; 21. 220kV buses; 22. a main transformer; 3. an electricity utilization end; 31. a first incoming line; 32. a second incoming line; 33. 10kV buses; 34. outgoing lines; 35. a switch cabinet.

Detailed Description

Various exemplary embodiments of the present utility model 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, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present utility model unless it is specifically stated otherwise.

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

Techniques and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate.

In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of exemplary embodiments may have different values.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

As shown in fig. 1, according to a first aspect of the present utility model, there is provided a power supply apparatus, applied to a data center, comprising: 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; the power transformation terminal 2 comprises a main transformer 22 and at least two 220kV buses 21, wherein the main transformer 22 is connected with the power transmission terminal 1 through the 220kV buses 21, and the main transformer 22 is configured to be capable of changing the voltage drop of 220kV input by the power transmission terminal 1 into 10kV; the electricity utilization terminal 3 comprises a first incoming line 31 and a second incoming line 32, wherein the first ends of the first incoming line 31 and the second incoming line 32 are respectively connected with the main transformer 22, and the second ends are respectively used for being connected with the data center.

Specifically, the data center provides larger calculation power to the outside through a plurality of servers, so that the power consumption requirement is correspondingly higher. In the present embodiment, a power supply apparatus for supplying power to a data center has a power transmitting terminal 1, a power transforming terminal 2, and a power consuming terminal 3. The power transmission end 1 can be a power supply platform such as a transformer substation, and can directly output 220 kV-level voltage to the outside, the power transformation end 2 is connected with the power transmission end 1 through at least two 220kV buses 21, and directly changes the 220 kV-level voltage drop output by the power transmission end 1 into 10kV low-level voltage through a main transformer 22, and the 10kV voltage is input into electric equipment of a data center through a first incoming line 31 and a second incoming line 32 of the electric equipment end 3 so as to meet the electricity consumption 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 grade of the power transmission end 1, omits the voltage grade reducing process of 110kV, cancels useless voltage grade, greatly reduces the manufacturing cost of the whole power supply equipment, improves the power supply capacity of the power transmission end 1, saves the 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 wires of the 220kV bus 21 may be adaptively adjusted according to the importance level and scale of the power transmission end 1, and parameters such as the form, number, and single capacity of the main transformer 22 may also be adjusted and adapted according to the actual requirement of the data center, so as to further improve the reliability and adaptability of the power supply device.

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.

Specifically, in the present embodiment, the first incoming line 31 and the second incoming line 32 may each include at least two 10kV buses 33. For example, when the main transformers 22 are split winding transformers, the low voltage side thereof is in the form of a double branch connection, i.e. two 10kV bus bars 33 are assembled around 10kV of each main transformer 22. The rated current and short-time withstand current of the main transformer 22 can be adjusted according to the actual requirements of the data center. For example, the main transformer 22 has a capacity of 240/120/120MVA and a rated current of 4000A; the short-time withstand current can be adjusted according to actual conditions. The power supply equipment provided by the embodiment can cancel the setting of the 10kV bus 33 sectional cabinet in the prior art through the adjustment of the main transformer form and the optimization of the main wiring form on the premise of not changing the standard equipment on the low-voltage side (10 kV side) of the main transformer 22, fully utilizes the whole capacity of the main transformer 22 and ensures the reliable power supply requirement of a data center.

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

Specifically, in the present embodiment, the number of main transformers 22 may be set to a plurality, 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, respectively. In practical application, the data center can be connected with 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 perform normal power supply, and the reliability of power supply equipment for power supply of the data center is improved.

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

Specifically, in this embodiment, two 10kV buses 33 of different main transformers 22 may be mutually standby, that is, the data center may be simultaneously connected to the outgoing lines 34 of the 10kV buses 33 under different main transformers 22, on one hand, multiple main transformers 22 may provide power supply requirements meeting more equipment, on the other hand, different 10kV buses 33 mutually standby come from different main transformers 22, so that the reliability of the power supply equipment is improved, and economic losses caused by outage of the data center are avoided.

Optionally, each 10kV busbar 33 is 50% loaded; in the case that one of the 10kV buses 33 fails, the other 10kV bus 33 is 100% loaded.

Specifically, in practical application, that is, when the power supply equipment is in a normal running state, each 10kV busbar 33 carries 50% of the power supply load of the data center, and when one 10kV busbar 33 is abnormal in running, the other 10kV busbar 33 carries all the loads of the data center, so that the reliability of power supply is improved.

Alternatively, 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 this embodiment, according to the rated short-time withstand current of the 10kV electric device, the main transformer 22 may be in the form of a high-impedance transformer, so as to make the short-circuit current of the low-voltage side power consumption terminal 3 of the main transformer 22 less than or equal to 25kA, thereby avoiding the short-circuit of the power consumption terminal 3 caused by excessive current, and further improving the reliability of the power supply device. Further, the short-circuit current at the low voltage side can be controlled within 20kA in the form of a high-impedance transformer.

Optionally, a switch cabinet 35 is also connected to each 10kV busbar 33, the switch cabinets 35 being configured to be able to control the on/off of the corresponding 10kV busbar 33.

Specifically, in practical application, each 10kV busbar 33 is further connected with a switch cabinet 35 capable of controlling on/off of a circuit, so as to facilitate power-off maintenance of the power utilization terminal 3, and the like. Typically, the rated current of the switchgear 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.

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

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

Alternatively, the single main transformer capacity of the main transformer 22 is greater than 120MVA, and the main transformer 22 adopts a split winding form.

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

In order to make the technical scheme of the utility model clearer, the utility model provides the following specific examples for illustration.

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

In this embodiment, the high voltage side of the main transformer 22 employs a double 220kV bus 21, the main transformer 22 employs a 220/10.5kV, 180/90/90MVA split winding transformer, and half-ride through 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 adopts a double-branch wiring mode, namely, 10kV windings of each main transformer are connected with two sections of 10kV buses 33, the inlet wires (a first inlet wire 31 and a second inlet wire 32) of the main transformer 22 are separated by rated current 3150A, and the short-time withstand current is 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 withstand current is adjusted according to actual conditions;

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

The foregoing embodiments mainly describe differences between the embodiments, and as long as there is no contradiction between different optimization features of the embodiments, the embodiments may be combined to form a better embodiment, and in consideration of brevity of line text, no further description is given here.

While certain specific embodiments of the utility model have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the utility model. 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 utility model. The scope of the utility model is defined by the appended claims.

Claims

1. A power supply apparatus for use in a data center, comprising:

the power transmission device comprises a power transmission end and a power transformation end, wherein the power transmission end comprises a main transformer and at least two 220kV buses, the main transformer is connected with the power transmission end through the 220kV buses and is configured to be capable of changing the voltage drop of 220kV input by the power transmission end into 10kV, and the main transformer is a high-impedance transformer;

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

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

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

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

6. A power supply apparatus according to claim 3, characterized in that the short-circuit current of the low-voltage side of the main transformer is less than or equal to 25kA.

7. A power supply apparatus according to claim 3, wherein each of the 10kV buses is further connected to a switch cabinet configured to be able to control on/off of the corresponding 10kV bus.

8. The power supply apparatus according to claim 7, wherein a single main transformer capacity of the main transformer is less than or equal to 120MVA, and the main transformer takes a conventional duplex winding form.

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

10. A power supply device according to claim 8 or 9, characterized in that the rated current of the switchgear 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.