CN220042997U - Power supply system of data center and data center - Google Patents
Power supply system of data center and data center Download PDFInfo
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- CN220042997U CN220042997U CN202320987732.9U CN202320987732U CN220042997U CN 220042997 U CN220042997 U CN 220042997U CN 202320987732 U CN202320987732 U CN 202320987732U CN 220042997 U CN220042997 U CN 220042997U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
Abstract
The utility model discloses a power supply system of a data center and the data center, wherein the power supply system of the data center comprises: the output voltage of the power supply end is 220kV; the power supply system comprises a power supply end, a first power transformation end, a power supply branch circuit and a data center, wherein the input end of the first power transformation end is connected with the output end of the power supply end, the output voltage of the first power transformation end is 20kV, the output end of the first power transformation end is connected with the input ends of the power supply branch circuits, the output voltage of the power supply branch circuits is 10kV, and the power supply branch circuits are used for supplying power to the data center. According to the utility model, the output voltage of the first power transformation end is changed into 20kV, the 20kV voltage is converted into 10kV voltage and then is provided for a power distribution room of a data center, and the design scheme of the original power distribution room is not required to be changed. Compared with a 220/10kV power supply scheme, the wiring mode is simplified, and the cost of a power supply system is reduced.
Description
Technical Field
The present utility model relates to the field of electrical technology, and in particular, to a power supply system for a data center and a data center.
Background
With the development of internet technology, the demands of data centers for bandwidth resources and storage resources of the internet are increasing, and the development scale of the entire data center infrastructure is also expanding. The scale of the current large-scale data center can reach 200-300MW, and the power supply capacity of a 110kV transformer substation is far exceeded. And because of the shortage of grid side interval resources, the line path resources are limited, and a plurality of 110kV substations are difficult to build for one data center. Therefore, the improvement of the voltage level of the transformer substation and the increase of the capacity of a single substation become effective means for solving the power supply bottleneck. At present, a self-built transformer substation of a data center is 220kV, and a 10kV outlet is adopted at the low-voltage side of the transformer substation, and is matched with a 10kV distribution room of the data center to normally supply power to the data center. But the 10kV power supply system has the advantages of small power supply radius, large loss, more required outgoing cables, complex overall scheme and high manufacturing cost.
Disclosure of Invention
It is an object of the present utility model to provide a new solution for data center power supply.
According to a first aspect of the present utility model, there is provided a power supply system for a data center, comprising:
the output voltage of the power supply end is 220kV;
the power supply system comprises a power supply end, a first power transformation end, a power supply branch circuit and a data center, wherein the input end of the first power transformation end is connected with the output end of the power supply end, the output voltage of the first power transformation end is 20kV, the output end of the first power transformation end is connected with the input ends of the power supply branch circuits, the output voltage of the power supply branch circuits is 10kV, and the power supply branch circuits are used for supplying power to the data center.
Optionally, the power supply branch circuit includes switch cabinet and second transformation end, the output of first transformation end with the input of switch cabinet is connected, the output of switch cabinet with the input of second transformation end is connected, second transformation end output voltage is 10kV.
Optionally, the capacity of the first power transformation end is 180MVA, and the rated current of the switch cabinet is 3150A.
Optionally, the number of the power supply branches is two.
Optionally, the system further comprises a capacitor with a capacity of not less than 16Mvar, and the capacitor is used for reactive compensation of the power supply system.
Optionally, the first power transformation terminal uses a conventional impedance transformer, and the impedance of the first power transformation terminal is greater than or equal to 20%.
Optionally, each outgoing line of the switch cabinet comprises a single cable, the cable comprises three core wires, and the sectional area of each core wire is 300mm 2 。
Optionally, the system further comprises a 10kV diesel generator set, wherein the diesel generator set is used as a standby power supply to supply power to the data center.
According to a second aspect of the present utility model there is provided a data center comprising the power supply system of the data center of the first aspect of the present utility model.
Optionally, the data center includes a power distribution room, and the power supply branch is disposed in the power distribution room.
According to the embodiment of the utility model, the output voltage of the first power transformation end is changed into 20kV, the 20kV voltage is converted into 10kV voltage and then is provided for a power distribution room of a data center, and the design scheme of the original power distribution room is not required to be changed. Compared with a 220/10kV power supply scheme, the rated current of the low-voltage side of the first power transformation end becomes half, the number of power supply branches connected to the low-voltage side of the first power transformation end also becomes half, the wiring mode is simplified, the number of cables required by a power supply system is reduced, and the cost of the power supply system is reduced. In addition, as the output voltage of the first power transformation end is increased to 20kV, the power supply radius is increased, a more appropriate mode can be selected when the power supply system is built, and the cost is further reduced. Compared with a 220/10kV power supply scheme, the utility model has great technical and economic advantages in large-scale data centers and ultra-large-scale data center scenes.
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 220/10kV power supply system in the prior art.
Fig. 2 is a block diagram of a power supply system for a data center in one embodiment of the utility model.
Fig. 3 is a schematic diagram of a power supply system for a data center in another embodiment of the utility model.
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, methods, and apparatus known to one 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 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.
A data center is a building site that provides an operating environment for a large number of electronic information devices that are centrally located. The data center comprises a large number of servers, switches, refrigeration and heat dissipation equipment and the like. The server is a high-performance computer capable of efficiently storing and processing data and information as a network node. The switch is a network device for forwarding electric signals, can provide electric signal paths for network nodes accessed to the switch, and provides high-speed response and information transmission in the environment of high-density network traffic scheduling of a data center. Data centers can be classified into ultra-large, large and medium-small according to scale division. The ultra-large data center refers to a data center with a scale of more than 10,000 standard racks 4; large data centers refer to data centers having a size between 3,000 and 10,000 standard racks; medium and small data centers refer to data centers having a size of less than 3,000 standard racks. Among them, because of the extremely large data center and the extremely large data center, the energy supply and other factors need to be considered in constructing the extremely large data center and the large data center.
A prior art power supply system for a data center is described below with reference to fig. 1. As shown in fig. 1, the power supply system adopts a 220kV/10kV power supply scheme. The data center comprises a distribution room, and the bus voltage of the distribution room is 10kV. The input voltage of a self-built transformer substation of the data center is 220kV, the capacity of the transformer substation is 180MVA, and the transformer substation converts the input voltage of 220kV into voltage of 10kV and outputs the voltage to directly supply power to a distribution room. The low-voltage side of the main transformer adopts split winding mode wiring, the main transformer comprises two windings with the same capacity, the capacity of each winding is 90MVA, and the output voltage of each winding is 10kV. Each winding corresponds to two sections of buses, each winding adopts double-branch wiring, and each winding is connected with two switch cabinets. A plurality of lines can be led out from one switch cabinet and used for supplying power to a distribution room of the data center. One main transformer corresponds to 4 sections of 10kV buses, 4-face main transformer incoming line switch cabinets are needed, the structure is complex, and the manufacturing cost is high.
Therefore, the power supply system for the data center in the related art has the technical problems of complex wiring mode, high manufacturing cost and the like. In order to solve the technical problems, the technical scheme of the utility model is provided.
As shown in fig. 2, the present embodiment describes a power supply system for a data center, which is used to supply power to the data center. The power supply system comprises a power supply end, a first power transformation end and a plurality of power supply branches.
The output voltage of the power supply end is 220kV, and the power supply end is used for outputting 220kV voltage to the first power transformation end. The input end of the first power transformation end is connected with the output end of the power supply end, the output voltage of the first power transformation end is 20kV, the output end of the first power transformation end is connected with the input ends of a plurality of power supply branches, the output voltage of the power supply branches is 10kV, and the power supply branches are used for supplying power to the data center.
The input voltage of the first power transformation end is 220kV, the first power transformation end is used for converting the input voltage of 220kV into the output voltage of 20kV, and the first power transformation end can be a self-built transformer substation of a data center. The windings of the first power transformation end are respectively connected with a plurality of power supply branches.
Because the bus voltage of the distribution room of the data center is 10kV, the 20kV voltage output by the first power transformation end does not meet the power supply requirement of the distribution room of the data center. Under the condition that the original design scheme of the distribution room is not changed, the 20kV voltage is converted into 10kV voltage through the power supply branch and then is provided for the distribution room of the data center, and the power supply branch also has a voltage reduction function.
In this embodiment, the 220kV voltage output by the power supply terminal is stepped down twice, and the 220kV voltage is converted into 20kV voltage through the first power transformation terminal, and then the 20kV voltage is converted into 10kV voltage through the power supply branch.
The number of supply branches may be determined based on the rated current of the supply branches and the rated current of the low voltage side of the first power conversion terminal. The sum of the rated currents of the individual supply branches cannot be smaller than the rated current of the low-voltage side of the first power conversion terminal. If the sum of rated currents of the power supply branches is smaller than the rated current of the low-voltage side of the first power transformation end, the actual current of the power supply branches exceeds the rated current of the power supply branches, so that the current of the power supply branches is overlarge, and potential safety hazards are caused.
For example, the rated current of the low-voltage side of the first power transformation end is 10000A, the rated current of each power supply branch circuit is 5000A, and then the number of the power supply branch circuits is two. For example, the rated current of the low-voltage side of the first power transformation end is 12000A, the rated current of each power supply branch circuit is 4000A, and then the number of the power supply branch circuits is three.
When the capacity of the first power conversion terminal is unchanged, compared with a 220kV/10kV power supply scheme, the output voltage of the first power conversion terminal is changed to 20kV, and then the rated current of the low-voltage side of the first power conversion terminal is changed to half. Since each supply branch is subjected to the same current, the number of supply branches connected at the low voltage side of the first power converting terminal is also halved.
For example, in the original 220/10kV power supply scheme, the rated current of the low-voltage side of the first power transformation end is 8000A, and the rated current of each power supply branch is 2000A, then 4 power supply branches are needed. After the output voltage of the first power transformation end is adjusted to 20kV, the rated current of the low-voltage side of the first power transformation end is halved because the capacity of the first power transformation end is unchanged, namely 4000A is the rated current of the low-voltage side of the first power transformation end, and only 2 power supply branches are needed after the output voltage of the first power transformation end is changed to 20kV.
According to the embodiment, the output voltage of the first power transformation end is changed into 20kV, the 20kV voltage is converted into 10kV voltage and then is provided for a power distribution room of the data center, and the design scheme of the original power distribution room is not required to be changed. Compared with a 220/10kV power supply scheme, the rated current of the low-voltage side of the first power transformation end becomes half, the number of power supply branches connected to the low-voltage side of the first power transformation end also becomes half, the wiring mode is simplified, the number of cables required by a power supply system is reduced, and the cost of the power supply system is reduced. In addition, as the output voltage of the first power transformation end is increased to 20kV, the power supply radius is increased, a more appropriate mode can be selected when the power supply system is built, and the cost is further reduced.
As the size of data centers increases, the cost of constructing data centers increases significantly. Compared with a 220/10kV power supply scheme, the utility model has great technical and economic advantages in large-scale data centers and ultra-large-scale data center scenes.
In this embodiment, the power supply branch includes switch cabinet and second transformation end, and the output of first transformation end is connected with the input of switch cabinet, the output of switch cabinet with the input of second transformation end is connected, second transformation end output voltage is 10kV.
The input voltage of the second power transformation end is 20kV, and the second power transformation end is used for converting the input voltage of 20kV into the output voltage of 10kV. The second power transformation end can be arranged in a power distribution room of the data center, a 20kV incoming line is added in the power distribution room, a 20kV outgoing line of the switch cabinet is connected into the 20kV incoming line of the power distribution room, then the 20kV voltage is converted into a 10kV voltage through the second power transformation end, and then the 10kV voltage is connected into a 10kV bus of the power distribution room, so that power is supplied to the data center.
As shown in fig. 3, one switch cabinet can be connected with multiple outgoing lines, the number of outgoing lines of each switch cabinet can be determined according to actual requirements, and the voltage of each outgoing line of the switch cabinet is 20kV. Each outgoing line of the switch cabinet is connected to a corresponding second power transformation end. The switch cabinet comprises a branch control switch corresponding to each outgoing line, and the power supply of the corresponding outgoing line can be controlled through the branch control switch. The switch cabinet can also comprise a main control switch, and the power supply of all outgoing lines of the switch cabinet can be controlled simultaneously through the main control switch.
In one embodiment, the capacity of the first power conversion end is 180MVA, the rated current of the switch cabinet is 3150A, and the number of power supply branches is two.
The rated current of the power supply branch is the rated current of the switch cabinet in the power supply branch. Under the condition that the capacity of the first power transformation end is 180MVA, the rated current of the switch cabinet cannot exceed 4000A and the rated short-time withstand current of the 20kV system cannot exceed 25kA in consideration of the current-carrying capacity limitation of the 20kV switch cabinet and the short-circuit current level requirement of the 20kV system.
According to the capacity of the first power transformation end and the output voltage of the first power transformation end, the rated current of the low-voltage side of the first power transformation end can be calculated to be 5196A, and 2 switch cabinets, namely two power supply branches, are needed because the rated current of the switch cabinet is 3150A. The calculation formula of the rated current of the low-voltage side of the first power transformation end is as follows:
wherein I is the rated current of the low voltage side of the first power conversion terminal, S is the capacity of the first power conversion terminal, and U is the output voltage of the first power conversion terminal.
As shown in fig. 3, the power supply system includes a first switch cabinet and a second switch cabinet, and an input end of the first switch cabinet and an input end of the second switch cabinet are both connected to an output end of the first power transformation end. The output end of the first switch cabinet and the output end of the second switch cabinet are both connected with multi-circuit outgoing lines, and each circuit outgoing line is connected to a corresponding second power transformation end.
In this embodiment, the power supply system of the data center further includes a capacitor with a capacity not less than 16Mvar, where the capacitor is used to perform reactive compensation on the power supply system.
There may be some loss during the power transfer process, including losses caused by transformers and cables. The electrical loads in the grid belong to inductive loads, and during operation these devices are supplied with corresponding reactive power. After the reactive compensation equipment such as a capacitor and the like is arranged in the power grid, reactive power consumed by the inductive load can be provided, reactive power provided by a power grid power supply to the inductive load and transmitted by a line is reduced, and the electric energy loss of the line and a transformer caused by transmitting the reactive power can be reduced due to the reduction of the flow of the reactive power in the power grid.
In the 220/10kV power supply scheme, due to the fact that the wiring mode is complex, the number of cables is large, the electric energy loss is large, and reactive compensation is needed to be conducted by using a capacitor with the capacity of not less than 32 Mvar. After the output voltage of the first power transformation end is raised to 20kV, the number of used cables is halved, the electric energy loss of a power supply system is halved, and the capacity of a capacitor to be used is halved, namely, the capacitor with the capacity of not less than 16Mvar is required to be used for reactive compensation.
According to the embodiment, the capacitor is arranged in the power supply system, reactive compensation is performed on the power supply system through the capacitor, the electric energy loss of the power supply system is reduced, and the power supply efficiency is improved.
In one embodiment, the first power conversion terminal uses a conventional impedance transformer, and the impedance of the first power conversion terminal is greater than or equal to 20%.
In the present embodiment, openEach outgoing line of the switch cabinet comprises a single cable, the cable comprises three core wires, and the sectional area of each core wire is 300mm 2 。
The cables used for the switchgear outlets may be determined based on the load requirements of the data center. For example, in a 200/10kV power supply system, two cables are used for each outgoing line of the switch cabinet, each cable comprises three core wires, and the sectional area of each core wire is 300mm 2 A total of 72 return wires were included, with a total of 144 cables. The large-scale data center has large occupied area, long cable laying path and average length of 1.5km. According to the cabling requirements, 4 cable tunnels with a section of 2 x 2m are needed.
In the power supply system, after the output voltage of the first power supply end is raised to 20kV, the original design scheme of the power distribution room is not changed under the condition that the load demand of the data center is unchanged, so that the number of outgoing lines is 72 times, and the cable laying path is unchanged. Because the rated current of the low-voltage side of the first power transformation end is halved, only a single wire with the length of 3 mm is needed to be used for each outgoing line of the switch cabinet 2 The number of cables needed by the power supply system is halved, and the number of cables is 72. The number of cables needed by the power supply system is halved, so that the number of cable tunnels to be built is halved under the condition that the section of the cable tunnels is unchanged, namely, only 2 cable tunnels with the sections of 2 x 2m are needed, the civil engineering quantity is halved, and the construction cost of the power supply system is reduced.
The embodiment also comprises a 10kV diesel generator set, and the diesel generator set is used as a standby power supply to supply power to the data center.
The diesel generator set may be located in a distribution room of the data center. The output voltage of the diesel generator set is 10kV and is matched with the bus voltage of a distribution room of the data center. When the power supply system cannot normally supply power to the data center, the diesel generator set is used for supplying power. For example, when the power supply system is damaged by a cable, a transformer is damaged, and the like, the data center cannot be normally supplied with power, the power is supplied through the diesel generator set.
According to the embodiment, the diesel generator set is configured, the diesel generator set is used as a standby power supply, and the diesel generator set is used for supplying power when a power supply system fails and cannot normally supply power, so that the normal work of the data center is ensured.
This embodiment describes a data center including a power supply system for a data center according to any of the embodiments of the present utility model.
According to the data center of the embodiment, by using the power supply system of any one of the embodiments, a wiring mode can be simplified, the number of cables required by the power supply system is reduced, and the cost of the power supply system is reduced.
In one embodiment, the data center includes a power distribution room, and the power supply branch is disposed within the power distribution room. The data center also includes a machine room in which load devices such as servers and the like are disposed. And distributing power to load equipment in the machine room through the power distribution room.
In the description of the present specification, it should be understood that the terms "first" and "second" are used for descriptive purposes only and are not to be interpreted as indicating or implying a relative importance or an implicit indication of the number of technical features being indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present disclosure, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the present disclosure, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; the device can be mechanically connected, electrically connected and communicated; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the terms in this disclosure will be understood by those of ordinary skill in the art as the case may be.
The foregoing description of embodiments of the utility model has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the various embodiments described. The terminology used herein was chosen in order to best explain the principles of the embodiments, the practical application, or the technical improvements in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein. The scope of the utility model is defined by the appended claims.
Claims (10)
1. A power supply system for a data center, comprising:
the output voltage of the power supply end is 220kV;
the power supply system comprises a power supply end, a first power transformation end, a power supply branch circuit and a data center, wherein the input end of the first power transformation end is connected with the output end of the power supply end, the output voltage of the first power transformation end is 20kV, the output end of the first power transformation end is connected with the input ends of the power supply branch circuits, the output voltage of the power supply branch circuits is 10kV, and the power supply branch circuits are used for supplying power to the data center.
2. The power supply system according to claim 1, wherein the power supply branch comprises a switch cabinet and a second power transformation end, the output end of the first power transformation end is connected with the input end of the switch cabinet, the output end of the switch cabinet is connected with the input end of the second power transformation end, and the output voltage of the second power transformation end is 10kV.
3. The power supply system of claim 2, wherein the first power conversion terminal has a capacity of 180MVA and the switchgear cabinet has a rated current of 3150A.
4. A power supply system according to claim 3, characterized in that the number of power supply branches is two.
5. A power supply system according to claim 3, further comprising a capacitor having a capacity of not less than 16Mvar, the capacitor being used for reactive compensation of the power supply system.
6. The power supply system of claim 1, wherein the first power conversion terminal uses a conventional impedance transformer, and wherein the impedance of the first power conversion terminal is greater than or equal to 20%.
7. The power supply system of claim 2, wherein each outgoing line of the switchgear comprises a single cable comprising three core wires each having a cross-sectional area of 300mm 2 。
8. The power supply system of claim 1, further comprising a 10kV diesel generator set that serves as a backup power source to power the data center.
9. A data center comprising the power supply system of any of claims 1-8.
10. The data center of claim 9, wherein the data center includes a power distribution room, the power supply branch being located within the power distribution room.
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| CN202320987732.9U CN220042997U (en) | 2023-04-25 | 2023-04-25 | Power supply system of data center and data center |
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