CN115954874A - Power supply equipment - Google Patents

Abstract

The present application discloses an electrical device, which is applied to a data center, and includes: a power transmission terminal, a power transformation terminal and a power consumption terminal; the power transmission terminal is used to connect with a power supply device with an output voltage of 220kV; A transformer and at least two 220kV busbars, the main transformer is connected to the power transmission terminal through the 220kV busbars, the main transformer is configured to be able to drop the 220kV input voltage of the power transmission terminal to 10kV; the power consumption terminal It includes 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 to the main transformer, and the second ends are respectively used to connect to the data center. The power supply equipment provided by the application reduces the manufacturing cost, improves the power supply capacity, and satisfies the power supply demand of the data center.

Description

power supply equipment

technical field

The present application relates to the technical field of power supply and distribution, and more specifically, to a power supply device.

Background technique

With the rapid development of Internet technology, relying on the Internet, online education, online consultation, remote office and other industries related to education, medical care, and work that design people's livelihood have been iterated. Resources and storage resources are becoming more and more prominent, which makes the development scale of data center infrastructure expand accordingly.

At present, the scale of a large data center has far exceeded the power supply capacity of a 110kv substation. However, due to the shortage of spacing resources on the grid side and limited line path resources, it is difficult to build multiple 110kv substations for a data center. Therefore, there is an urgent need to provide a power supply device that can increase the voltage level of the substation and increase the capacity of a single station, so as to meet the power supply demand of the data center.

Contents of the invention

One purpose of the present application is to provide a new technical solution for power supply equipment.

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

A power transmission terminal, the power transmission terminal is used to connect with power supply equipment with an output voltage of 220kV;

The substation terminal, the substation terminal includes a main transformer and at least two 220kV buses, the main transformer is connected to the transmission terminal through the 220kV buses, and the main transformer is configured to be able to input 220kV The voltage drop becomes 10kV;

A power consumption terminal, the power consumption terminal includes 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 to the main transformer, and the second ends are respectively connected to the main transformer. to connect to the data center.

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

Optionally, there are multiple main transformers, and there are multiple first incoming lines and second incoming lines respectively corresponding to the number of the main transformers.

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

Optionally, each of the 10kV buses is loaded with 50%; when one of the 10kV buses is powered off, the other of the 10kV buses is loaded with 100%.

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 of the 10kV busbars is further connected with a switchgear, and the switchgear is configured to be able to control on/off of the corresponding 10kV busbars.

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

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

Optionally, the rated current of the switchgear 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 one embodiment of the application, the power supply equipment provided by the application directly reduces the voltage of 220kV at the transmission end to a voltage level of 10kV through the main transformer, which saves the voltage level of 110kV, reduces the cost of power supply equipment, and improves This ensures the power supply capability of the power supply equipment and meets the power supply requirements of the data center.

Other features of the present application and advantages thereof will become apparent through the following detailed description of exemplary embodiments of the present application with reference to the accompanying drawings.

Description of drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate the 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 device provided by the present application.

Explanation of reference signs:

1. Transmission terminal; 2. Substation terminal; 21. 220kV busbar; 22. Main transformer; 3. Power consumption terminal; 31. First incoming line; 32. Second incoming line; 33. 10kV busbar; 34. Outgoing line; 35. Switchgear.

Detailed ways

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 arrangements of components and steps, 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 in no way serves as any limitation of the application, its application or uses.

Techniques, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods and devices should be considered part of the description.

In all examples shown and discussed herein, any specific values should be construed as exemplary only, and not as limitations. Therefore, other instances of the exemplary embodiment may have different values.

It should be noted that like numerals and letters denote like items in the following figures, therefore, once an item is defined in one figure, it does not require further discussion in subsequent figures.

As shown in Figure 1, according to the first aspect of the present application, a power supply device is provided, which is applied to a data center, including: a power transmission terminal 1, a power transformation terminal 2, and a power consumption terminal 3; the power transmission terminal 1 is used to communicate with the output voltage It is connected to 220kV power supply equipment; the substation terminal 2 includes a main transformer 22 and at least two 220kV busbars 21, the main transformer 22 is connected to the power transmission terminal 1 through the 220kV busbars 21, and the main transformer 22 is It is configured to be able to change the voltage drop of 220kV input from the power transmission terminal 1 to 10kV; the power consumption terminal 3 includes a first incoming line 31 and a second incoming line 32, and the first incoming line 31 and the second incoming line The first ends of 32 are respectively connected to the main transformers 22, and the second ends are respectively used to connect to the data center.

Specifically, the data center provides relatively large computing power through multiple servers, so its electricity demand is correspondingly high. In this embodiment, the power supply equipment for providing power to the data center has a power transmission terminal 1 , a power transformation terminal 2 and a power consumption terminal 3 . Among them, the transmission terminal 1 can be a power supply platform such as a substation, which can directly output a voltage of 220kV to the outside world, and the transmission terminal 2 is connected to the transmission terminal 1 through at least two 220kV busbars 21, and directly connects the transmission terminal 1 through the main transformer 22. 1 output 220kV level voltage drops into 10kV low-level voltage, and then 10kV voltage is input to the electrical equipment in the data center through the first incoming line 31 and the second incoming line 32 of the power consumption terminal 3, so as to meet the Electricity demand of electrical equipment.

The above-mentioned power supply equipment provided in this embodiment directly changes the voltage of 220kV to 10kV, improves the voltage level of the transmission terminal 1, saves the step-down process of the 110kV voltage level, and cancels the useless voltage level, making The cost of the entire power supply equipment is greatly reduced, and the power supply capacity of the power transmission terminal 1 is improved, saving power grid side and municipal resources, and meeting the power supply demand of the current data center. In addition, the use of 220kV power reception can greatly save electricity costs during the entire life cycle of the power supply equipment.

Further, in this embodiment, parameters such as the number of connections of the 220kV busbar 21 can be adaptively adjusted according to the importance level and scale of the transmission terminal 1, and parameters such as the form, quantity, and capacity of the main transformer 22 can also be adjusted. Adjust and adapt according to the actual needs of the data center, 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 busbars 33, and the 10kV busbars 33 are respectively connected with a plurality of outgoing lines 34, and the outgoing lines 34 are used to connect the data center.

Specifically, in this embodiment, the first incoming line 31 and the second incoming line 32 may include at least two 10kV bus bars 33 respectively. For example, when the main transformer 22 adopts a split-winding transformer, its low-voltage side adopts a double-branch connection form, that is, each 10kV winding of the main transformer 22 is connected to two 10kV busbars 33 . Wherein, the rated current and the short-time withstand current of the main transformer 22 can be adjusted according to the actual demand of the data center. For example, when the capacity of the main transformer 22 is 240/120/120MVA, the rated current is 4000A; the short-time withstand current can be adjusted according to the actual situation. The power supply equipment provided by this embodiment can cancel the 10kV busbar 33 subsections in the prior art through the adjustment of the main transformer form and the optimization of the main wiring form without changing the standard equipment on the low-voltage side (10kV side) of the main transformer 22 The setting of the cabinet fully utilizes the entire capacity of the main transformer 22, ensuring the reliable power supply demand of the data center.

Optionally, multiple main transformers 22 are provided, and multiple first incoming lines 31 and second incoming lines 32 are provided corresponding to the number of main transformers 22 .

Specifically, in this embodiment, the number of main transformers 22 can be set in multiples, such as 2, 3, 4, etc., and each main transformer 22 is respectively provided with a first incoming line 31 and a second incoming line 32 . In practical applications, the data center can be connected to the outgoing lines 34 under different main transformers 22 at the same time, so that when one of the main transformers 22 fails, the other main transformer 22 can still provide normal power supply, which improves the power supply equipment. Reliability of central power supply.

Optionally, the 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 can serve as backups for each other, that is, the data centers can be connected to the outgoing lines 34 of the 10kV buses 33 under different main transformers 22 at the same time. The main transformer 22 can meet the power supply requirements of more equipment. On the other hand, the different 10kV buses 33 that serve as backups come from different main transformers 22, which improves the reliability of the power supply equipment and avoids the economic loss caused by power outages in the data center. loss.

Optionally, each of the 10kV buses 33 is loaded with 50%; when one of the 10kV buses 33 is powered off, the other 10kV bus 33 is loaded with 100%.

Specifically, in the practical application of the above-mentioned embodiment, that is, when the power supply equipment is in normal operation, each 10kV bus 33 can carry 50% of the power supply load of the data center, and when one of the 10kV buses 33 is not operating normally, the other The 10kV busbar 33 carries all the loads of the data center, improving the reliability of power supply.

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 this embodiment, according to the size of the rated short-time withstand current of the 10kV electrical equipment, the main transformer 22 can be in the form of a high-impedance transformer, so that the short-circuit current of the power consumption terminal 3 on the low-voltage side of the main transformer 22 is less than or equal to 25kA, avoiding the short circuit of the power consumption terminal 3 due to excessive current, and further improving the reliability of the power supply equipment. Further, the short-circuit current at the low-voltage side can be controlled within 20kA by adopting the form of a high-impedance transformer.

Optionally, each of the 10kV busbars 33 is further connected with a switchgear 35 configured to be able to control on/off of the corresponding 10kV busbar 33 .

Specifically, in practical applications, each 10kV bus bar 33 is also connected to a switchgear 35 capable of controlling circuit on/off, so as to facilitate power-off maintenance of the power consumption terminal 3 . Normally, the rated current of the switchgear 35 can be set to 3150A or 4000A, the rated short-time withstand current is controlled to be 31.5kA or 40kA, and the duration of the rated short-time withstand current is 4s.

Optionally, the capacity of a single main transformer 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 this embodiment, the form of the main transformer 22 can be set according to the main variable 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 used. On the one hand, it can meet the power demand of the power consumption terminal 3. The cost of power supply equipment. For example, in one embodiment, when the capacity of the main transformer is 100MVA or 120MVA, the conventional double winding form 220/10.5kV is adopted, wherein 220kV is the high voltage side voltage of the main transformer 22, and 10.5kV is the low voltage side voltage of the main transformer 22. Among them, considering the voltage drop problem, the voltage on the low-voltage side is slightly higher than the 10kV power demand.

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

Specifically, in this embodiment, when the capacity of a single main transformer of the main transformer 22 is greater than 120MVA, such as 150MVA, 180MVA or 240MVA, a high-impedance transformer needs to be used. In this embodiment, the split winding form 220/10.5/10.5kV is adopted, wherein 220kV is the voltage of the high voltage side of the main transformer 22, and 10.5kV is the voltage of the two low voltage sides of the main transformer 22 respectively.

In order to make the technical solution of the present application clearer, the present application provides the following specific examples for illustration.

As shown in Figure 1, take a 3×180MVA power supply equipment as an example.

In this embodiment, the high-voltage side of the main transformer 22 adopts dual 220kV busbars 21, the main transformer 22 adopts 220/10.5/10.5kV, 180/90/90MVA split winding transformer, and the half-through short-circuit impedance is 45%. Among them, the capacity of the main transformer 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 connection form, that is, the 10kV winding of each main transformer is connected to two sections of 10kV bus bars 33, and the incoming lines of the main transformer 22 (the first incoming line 31 and the second incoming line 32) are separated by a rated current of 3150A , short-term withstand current 31.5kA/4s. Among them, the rated current of the incoming line interval of the main transformer 22 can be adjusted according to actual needs, for example, when the capacity of the main transformer is 240/120/120MVA, the rated current is 4000A; the short-time withstand current is adjusted according to the actual situation;

In this embodiment, the 10kV busbar 33 has 12 sections in total, and there is no subsection between each section. The 10kV buses 33 under different main transformers serve as backup sections for each other, so as to meet the power supply reliability requirements of the data center.

The above-mentioned embodiments focus on the differences between the various embodiments. As long as the different optimization features of the various embodiments do not contradict each other, they can be combined to form a better embodiment. Considering the brevity of the text, no further repeat.

Although some specific embodiments of the present application have been described in detail through examples, those skilled in the art should understand that the above examples are only for illustration, rather than limiting the scope of the present application. Those skilled in the art will appreciate that modifications can be made to the above embodiments without departing from the scope and spirit of the application. The scope of the application is defined by the appended claims.

Claims (10)

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

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.

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.

Images