Power supply system, data center and power supply method

Abstract

The present specification provides a power supply system, a data center and a power supply method. The power supply system is used to supply power to a load, and includes: a first high-voltage DC rectifier device group, including a first high-voltage DC rectifier device and a second high-voltage DC rectifier device, the input end of the first high-voltage DC rectifier device is connected to the first power supply energy source, the input end of the second high-voltage DC rectifier device is connected to the second power supply energy source, the output end of the first high-voltage DC rectifier device is connected in parallel with the output end of the second high-voltage DC rectifier device to form a first parallel output end and connected to the load. A second high-voltage DC rectifier device group includes a third high-voltage DC rectifier device and a fourth high-voltage DC rectifier device, the input end of the third high-voltage DC rectifier device is connected to the first power supply energy source, the input end of the fourth high-voltage DC rectifier device is connected to the second power supply energy source, the output end of the third high-voltage DC rectifier device is connected in parallel with the output end of the fourth high-voltage DC rectifier device to form a second parallel output end and connected to the load.

Description

Technical Field

[0001] The present specification relates to the field of power supply technology, and in particular to a power supply system, a data center, and a power supply method. Background Art

[0002] The loads in data centers usually use a dual-circuit power supply solution. One way is to connect two uninterruptible power supply systems (UPS) from different sources and not in parallel to the load. However, a power failure or uninterruptible device failure in the uninterruptible power supply systems from different sources and not in parallel will cause a power outage. Another way is to connect two uninterruptible power supply systems from the same source in parallel to the load. However, a power failure in the uninterruptible power supply systems from the same source in parallel will cause a power outage in the entire parallel system. Therefore, no matter which method is used, the reliability of the power supply to the data center is low. Summary of the invention

[0003] This specification proposes a power supply system, a data center, and a power supply method, which can improve the reliability of power supply in the data center.

[0004] According to a first aspect of an embodiment of this specification, a power supply system is provided for supplying power to a load, wherein the load includes two input terminals, and the power supply system includes:

[0005] A first high-voltage DC rectifier device group includes a first high-voltage DC rectifier device and a second high-voltage DC rectifier device, wherein an input end of the first high-voltage DC rectifier device is connected to a first power supply energy source, an input end of the second high-voltage DC rectifier device is connected to a second power supply energy source, an output end of the first high-voltage DC rectifier device and an output end of the second high-voltage DC rectifier device are connected in parallel to form a first parallel output end, and the first parallel output end is connected to an input end of a load;

[0006] The second high-voltage DC rectifier device group includes a third high-voltage DC rectifier device and a fourth high-voltage DC rectifier device, the input end of the third high-voltage DC rectifier device is connected to the first power supply energy, the input end of the fourth high-voltage DC rectifier device is connected to the second power supply energy, the output end of the third high-voltage DC rectifier device is connected in parallel with the output end of the fourth high-voltage DC rectifier device to form a second parallel output end, and the second parallel output end is connected to another input end of the load.

[0007] Furthermore, it also includes a first energy storage unit connected to the first parallel output end.

[0008] Furthermore, it also includes a second energy storage unit connected to the second parallel output terminal.

[0009] Furthermore, the input end of the first high-voltage DC rectifier device and the input end of the third high-voltage DC rectifier device are connected in parallel to form a first parallel input end, and a first switching device is provided between the first parallel input end and the first power supply energy source.

[0010] Furthermore, the input end of the second high-voltage DC rectifier device is connected in parallel with the input end of the fourth high-voltage DC rectifier device to form a second parallel input end, and a second switch device is provided between the second parallel input end and the second power supply energy source.

[0011] Furthermore, the first high-voltage DC rectifier device and the second high-voltage DC rectifier device are both provided with a controller, and the controller of the first high-voltage DC rectifier device is synchronously set with the controller of the second high-voltage DC rectifier device so that the operating voltages of the first high-voltage DC rectifier device and the second high-voltage DC rectifier device are the same.

[0012] Furthermore, when any one of the controllers of the first high-voltage DC rectifier device and the second high-voltage DC rectifier device fails, the first high-voltage DC rectifier device and the second high-voltage DC rectifier device are adjusted to the same operating voltage according to a preset logic.

[0013] Furthermore, the third high-voltage DC rectifier device and the fourth high-voltage DC rectifier device are both provided with a controller, and the controller of the third high-voltage DC rectifier device is synchronously set with the controller of the fourth high-voltage DC rectifier device so that the operating voltages of the third high-voltage DC rectifier device and the fourth high-voltage DC rectifier device are the same.

[0014] Furthermore, when any one of the controller of the third high-voltage DC rectifier device and the controller of the fourth high-voltage DC rectifier device fails, the third high-voltage DC rectifier device and the fourth high-voltage DC rectifier device are adjusted to the same operating voltage according to a preset logic.

[0015] According to a second aspect of an embodiment of this specification, there is provided a data center, comprising a plurality of loads and a plurality of power supply systems corresponding to the number of the loads, the power supply systems being connected to the loads in a one-to-one correspondence, and the loads comprising two input terminals;

[0016] Wherein, the power supply system comprises:

[0017] A first high-voltage DC rectifier device group includes a first high-voltage DC rectifier device and a second high-voltage DC rectifier device, wherein an input end of the first high-voltage DC rectifier device is connected to a first power supply energy source, an input end of the second high-voltage DC rectifier device is connected to a second power supply energy source, an output end of the first high-voltage DC rectifier device and an output end of the second high-voltage DC rectifier device are connected in parallel to form a first parallel output end, and the first parallel output end is connected to an input end of a load;

[0018] The second high-voltage DC rectifier device group includes a third high-voltage DC rectifier device and a fourth high-voltage DC rectifier device, the input end of the third high-voltage DC rectifier device is connected to the first power supply energy, the input end of the fourth high-voltage DC rectifier device is connected to the second power supply energy, the output end of the third high-voltage DC rectifier device is connected in parallel with the output end of the fourth high-voltage DC rectifier device to form a second parallel output end, and the second parallel output end is connected to another input end of the load.

[0019] Furthermore, the power supply system also includes a first energy storage unit connected to the first parallel output end.

[0020] Furthermore, the power supply system also includes a second energy storage unit connected to the second parallel output end.

[0021] Furthermore, the input end of the first high-voltage DC rectifier device and the input end of the third high-voltage DC rectifier device are connected in parallel to form a first parallel input end, and a first switching device is provided between the first parallel input end and the first power supply energy source.

[0022] Furthermore, the input end of the second high-voltage DC rectifier device is connected in parallel with the input end of the fourth high-voltage DC rectifier device to form a second parallel input end, and a second switch device is provided between the second parallel input end and the second power supply energy source.

[0023] Furthermore, the first high-voltage DC rectifier device and the second high-voltage DC rectifier device are both provided with a controller, and the controller of the first high-voltage DC rectifier device is synchronously set with the controller of the second high-voltage DC rectifier device so that the operating voltages of the first high-voltage DC rectifier device and the second high-voltage DC rectifier device are the same.

[0024] Furthermore, when any one of the controllers of the first high-voltage DC rectifier device and the second high-voltage DC rectifier device fails, the first high-voltage DC rectifier device and the second high-voltage DC rectifier device are adjusted to the same operating voltage according to a preset logic.

[0025] Furthermore, the third high-voltage DC rectifier device and the fourth high-voltage DC rectifier device are both provided with a controller, and the controller of the third high-voltage DC rectifier device is synchronously set with the controller of the fourth high-voltage DC rectifier device so that the operating voltages of the third high-voltage DC rectifier device and the fourth high-voltage DC rectifier device are the same.

[0026] Furthermore, when any one of the controller of the third high-voltage DC rectifier device and the controller of the fourth high-voltage DC rectifier device fails, the third high-voltage DC rectifier device and the fourth high-voltage DC rectifier device are adjusted to the same operating voltage according to a preset logic.

[0027] According to a third aspect of an embodiment of this specification, a power supply method applied to a power supply system is provided, wherein the power supply system is used to supply power to a load, the load includes two input terminals, and the power supply system includes:

[0028] A first high-voltage DC rectifier device group includes a first high-voltage DC rectifier device and a second high-voltage DC rectifier device, wherein an input end of the first high-voltage DC rectifier device is connected to a first power supply energy source, an input end of the second high-voltage DC rectifier device is connected to a second power supply energy source, an output end of the first high-voltage DC rectifier device and an output end of the second high-voltage DC rectifier device are connected in parallel to form a first parallel output end, and the first parallel output end is connected to an input end of a load;

[0029] a second high-voltage DC rectifier device group, comprising a third high-voltage DC rectifier device and a fourth high-voltage DC rectifier device, wherein an input end of the third high-voltage DC rectifier device is connected to a first power supply energy source, an input end of the fourth high-voltage DC rectifier device is connected to a second power supply energy source, an output end of the third high-voltage DC rectifier device is connected in parallel with an output end of the fourth high-voltage DC rectifier device to form a second parallel output end, and the second parallel output end is connected to another input end of the load;

[0030] The power supply method includes: when the first power supply energy fails, the second high-voltage DC rectifier device and the fourth high-voltage DC rectifier device output the electric energy of the second power supply energy to the load; when the second power supply energy fails, the first high-voltage DC rectifier device and the third high-voltage DC rectifier device output the electric energy of the first power supply energy to the load.

[0031] It can be seen from the above technical scheme that the power supply system of this specification connects the output ends of two non-homologous high-voltage DC rectifier devices in parallel, and uses two groups of such high-voltage DC rectifier devices to connect to the load. When equipment fails or is maintained at any point in the entire circuit of any power supply energy source, the other power supply energy source can continue to supply power to the load, thereby improving the reliability of power supply in the data center. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A schematic circuit diagram of a power supply system according to an exemplary embodiment of the present specification is shown.

[0033] Figures 2 to 4 A schematic circuit diagram of a power supply system according to an exemplary embodiment of the present specification in different working scenarios is shown. DETAILED DESCRIPTION

[0034] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementations described in the following exemplary embodiments do not represent all implementations consistent with this specification. Instead, they are merely examples of devices and methods consistent with some aspects of this specification as detailed in the appended claims.

[0035] The terms used in this specification are for the purpose of describing specific embodiments only and are not intended to limit this specification. The singular forms "a", "the" and "the" used in this specification and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0036] It should be understood that although the terms first, second, third, etc. may be used in this specification to describe various information, this information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of this specification, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining".

[0037] This specification proposes a power supply system, a data center, and a power supply method, which can improve the reliability of power supply in the data center. The power supply system, data center, and power supply method of this specification are described in detail below in conjunction with the accompanying drawings. The features of the following embodiments and implementations can be combined with each other without conflict.

[0038] See also Figure 1 As shown, the embodiment of this specification provides a power supply system, which can be applied to an IDC room (Internet Data Center). An Internet data center generally refers to a large-scale site and room facilities, which are used to supply power to a load 90 of the data center. The load 90 includes two input terminals. The power supply system includes:

[0039] The first high-voltage direct current rectifying device group 10 includes a first high-voltage direct current rectifying device (HVDC, High Voltage DC) 11 and a second high-voltage direct current rectifying device 12, wherein the input end of the first high-voltage direct current rectifying device 11 is connected to the first power supply energy source, the input end of the second high-voltage direct current rectifying device 12 is connected to the second power supply energy source, the output end of the first high-voltage direct current rectifying device 11 and the output end of the second high-voltage direct current rectifying device 12 are connected in parallel to form a first parallel output end 13, and the first parallel output end 13 is connected to an input end of a load 90. It can be understood that the first high-voltage direct current rectifying device 11 and the second high-voltage direct current rectifying device 12 of the first high-voltage direct current rectifying device group 10 are two high-voltage direct current rectifying devices of non-homologous sources, and the output ends of the first high-voltage direct current rectifying device 11 and the second high-voltage direct current rectifying device 12 are connected in parallel to an input end of the load 90.

[0040] The second high-voltage DC rectifier device group 20 includes a third high-voltage DC rectifier device 21 and a fourth high-voltage DC rectifier device 22, wherein the input end of the third high-voltage DC rectifier device 21 is connected to the first power supply energy source, the input end of the fourth high-voltage DC rectifier device 22 is connected to the second power supply energy source, the output end of the third high-voltage DC rectifier device 21 and the output end of the fourth high-voltage DC rectifier device 22 are connected in parallel to form a second parallel output end 23, and the second parallel output end 23 is connected to another input end of the load 90. It can be understood that the third high-voltage DC rectifier device 21 and the fourth high-voltage DC rectifier device 22 of the second high-voltage DC rectifier device group 20 are two high-voltage DC rectifier devices of non-homologous origin, and the output ends of the third high-voltage DC rectifier device 21 and the fourth high-voltage DC rectifier device 22 are connected in parallel to another input end of the load 90.

[0041] In this embodiment, the first power supply energy source and the second power supply energy source are city electricity, and the following embodiments are all described by taking the power supply energy source as city electricity as an example. Of course, in other examples, the first power supply energy source and the second power supply energy source may also be renewable energy, wind power generation energy source, hydropower generation energy source, photovoltaic power generation energy source, etc., and this specification does not limit this. Load 90 may be a server, head cabinet equipment, or other IT equipment such as front-end equipment or back-end equipment in a data center.

[0042] The power supply system of this specification connects the output ends of two non-homologous high-voltage DC rectifiers in parallel, uses two groups of such high-voltage DC rectifiers to connect to the load, and then outputs the electric energy of the two power supply energy sources to the load, thereby realizing two-way power supply to the load. When the equipment at any point in the whole circuit of any power supply energy source fails or is maintained, the other power supply energy source can output the electric energy to the load through the corresponding high-voltage DC rectifier device, maintain continuous power supply to the load, and improve the reliability of power supply to the data center.

[0043] In an optional embodiment, the power supply system of the present specification may further include a first energy storage element 31 connected to the first parallel output terminal 13. The first energy storage element 31 can be charged by the electric energy flowing through the first parallel output terminal 13 of the first high-voltage DC rectifier device 11 and the second high-voltage DC rectifier device 12. When the first high-voltage DC rectifier device 11 and the second high-voltage DC rectifier device 12 fail, the load 90 can be powered by the first energy storage element 31, thereby ensuring the reliability of the system. In this embodiment, the first energy storage element 31 may be a battery.

[0044] The power supply system of the present specification may further include a second energy storage element 32 connected to the second parallel output terminal 23. The second energy storage element 32 can be charged by the electric energy flowing through the second parallel output terminal 23 of the third high-voltage DC rectifier device 21 and the fourth high-voltage DC rectifier device 22. When the third high-voltage DC rectifier device 21 and the fourth high-voltage DC rectifier device 22 fail, the load 90 can be powered by the second energy storage element 32, thereby ensuring the reliability of the system. In this embodiment, the second energy storage element 32 may be a battery.

[0045] In an optional embodiment, the input end of the first high-voltage DC rectifier device 11 and the input end of the third high-voltage DC rectifier device 21 are connected in parallel to form a first parallel input end 14, and a first transformer T1 is provided between the first power supply energy source and the first parallel input end 14. Taking the first power supply energy source as the mains as an example, the first transformer T1 is used to provide the electric energy input from the mains after stepping down the voltage to the first high-voltage DC rectifier device 11 and the third high-voltage DC rectifier device 21. Further, a first switch device K1 is provided between the first parallel input end 14 and the first power supply energy source.

[0046] The input end of the second high-voltage DC rectifier device 12 and the input end of the fourth high-voltage DC rectifier device 22 are connected in parallel to form a second parallel input end, and a second transformer T2 is provided between the second power supply energy source and the second parallel input end. Taking the second power supply energy source as the mains as an example, the second transformer T2 is used to provide the electric energy input from the mains after stepping down the voltage to the second high-voltage DC rectifier device 12 and the fourth high-voltage DC rectifier device 22. Further, a second switch device K2 is provided between the second parallel input end and the second power supply energy source.

[0047] Further, a third switching device K3 is provided at the input end of the first high-voltage DC rectifier 11, a fourth switching device K4 is provided at the input end of the second high-voltage DC rectifier 12, a fifth switching device K5 is provided at the input end of the third high-voltage DC rectifier 21, a sixth switching device K6 is provided at the input end of the fourth high-voltage DC rectifier 22, a seventh switching device K7 is provided between the first parallel output ends 13 of the first high-voltage DC rectifier 11 and the second high-voltage DC rectifier 12 and the first energy storage element 31, an eighth switching device K8 is provided between the first parallel output ends 13 of the first high-voltage DC rectifier 11 and the second high-voltage DC rectifier 12 and the load 90, an eighth-ninth switching device K9 is provided between the second parallel output ends 23 of the second high-voltage DC rectifier 21 and the fourth high-voltage DC rectifier 22 and the load 90, and a tenth switching device K10 is provided between the second parallel output ends 23 of the second high-voltage DC rectifier 21 and the fourth high-voltage DC rectifier 22 and the second energy storage element 32.

[0048] In this embodiment, the first power supply energy source and the second power supply energy source adopt 110KV mains electricity, and the first transformer T1 and the second transformer T2 are used to reduce the voltage of the corresponding mains input to 10kV voltage. It can be understood that the first transformer T1 and the second transformer T2 represent three independent 10kV substations respectively. The first switch device K1 to the tenth switch device K10 can all adopt circuit breakers, which can automatically cut off the circuit when the corresponding power supply circuit has a serious overload or short circuit and undervoltage fault, thereby protecting the various equipment and devices of the power supply system.

[0049] See also Figure 2As shown, it is the working scenario of the power supply system when the first power supply energy source and the second power supply energy source are both working normally. In this working scenario, the first switch device K1 to the tenth switch device K10 are all in the on state. One input end of the load 90 introduces the electric energy of the first power supply energy source through the first high-voltage DC rectifier device 11 and the third high-voltage DC rectifier device 21, and the other input end of the load 90 introduces the electric energy of the second power supply energy source through the second high-voltage DC rectifier device 12 and the fourth high-voltage DC rectifier device 22, so as to meet the dual-circuit power supply to the load 90, one of which can be used as the main power supply circuit, and the other can be used as the backup power supply circuit, and the dual-circuit power supply main and backup circuits of the load are both working normally. In this case, the first high-voltage DC rectifier device 11, the second high-voltage DC rectifier device 12, the third high-voltage DC rectifier device 21 and the fourth high-voltage DC rectifier device 22 are all working normally, and each load rate is 50% to supply power to the load 90.

[0050] See also Figure 3 As shown, it is the working scenario of the power supply system when the first power supply energy source is interrupted or maintained due to a fault. In this working scenario, the first switch device K1, the third switch device K3, and the fifth switch device K5 are in the disconnected state, and the first high-voltage DC rectifier device 11 and the third high-voltage DC rectifier device 21 are interrupted and shut down. One input end of the load 90 introduces the electric energy of the second power supply energy source through the second high-voltage DC rectifier device 12, and the other input end of the load 90 introduces the electric energy of the second power supply energy source through the fourth high-voltage DC rectifier device 22, which can also meet the dual-circuit power supply to the load 90. In this case, the second high-voltage DC rectifier device 12 and the fourth high-voltage DC rectifier device 22 supply power to the load 90 at a load rate of 100%.

[0051] See also Figure 4 As shown, it is the working scenario of the power supply system when the second power supply energy source is interrupted or maintained due to a fault. In this working scenario, the second switch device K2, the fourth switch device K4, and the sixth switch device K6 are in the disconnected state, and the second high-voltage DC rectifier device 12 and the fourth high-voltage DC rectifier device 22 are interrupted and shut down. One input end of the load 90 introduces the electric energy of the first power supply energy source through the first high-voltage DC rectifier device 11, and the other input end of the load 90 introduces the electric energy of the first power supply energy source through the third high-voltage DC rectifier device 21, which can also meet the dual-circuit power supply to the load 90. In this case, the first high-voltage DC rectifier device 11 and the third high-voltage DC rectifier device 21 supply power to the load 90 at a load rate of 100%.

[0052] In some optional embodiments, the first high-voltage DC rectifier device 11 and the second high-voltage DC rectifier device 12 are both provided with a controller, and the controller of the first high-voltage DC rectifier device 11 is synchronously set with the controller of the second high-voltage DC rectifier device 12 so that the operating voltages of the first high-voltage DC rectifier device 11 and the second high-voltage DC rectifier device 12 are the same, thereby achieving uniform distribution of the same voltage load and controlling the load losses of the first high-voltage DC rectifier device 11 and the second high-voltage DC rectifier device 12 to be as close as possible to avoid excessive load loss of one of them requiring maintenance or failure.

[0053] Further, when any one of the controllers of the first high-voltage DC rectifier 11 and the second high-voltage DC rectifier 12 fails, the first high-voltage DC rectifier 11 and the second high-voltage DC rectifier 12 are adjusted to the same working voltage according to a preset logic. The preset logic may be a preset voltage value that meets the load working requirements.

[0054] The third high-voltage DC rectifier 21 and the fourth high-voltage DC rectifier 22 are both provided with a controller, and the controller of the third high-voltage DC rectifier 21 is synchronously set with the controller of the fourth high-voltage DC rectifier 22, so that the working voltages of the third high-voltage DC rectifier 21 and the fourth high-voltage DC rectifier 22 are the same, thereby achieving uniform distribution of the same voltage load, and controlling the load losses of the third high-voltage DC rectifier 21 and the fourth high-voltage DC rectifier 22 to be as close as possible, so as to avoid excessive load loss of one of them, which requires maintenance or malfunctions.

[0055] Further, when any one of the controllers of the third high-voltage DC rectifier 21 and the fourth high-voltage DC rectifier 22 fails, the third high-voltage DC rectifier 21 and the fourth high-voltage DC rectifier 22 are adjusted to the same working voltage according to a preset logic. The preset logic may be a preset voltage value that meets the load working requirements.

[0056] The power supply system of this specification, through the above-mentioned settings, directly connects the DC sides of non-homologous power sources in parallel to achieve high-reliability power supply. When equipment fails or is maintained at any point in the entire circuit of the first power supply energy source or the second power supply energy source, the power supply to the end load is not interrupted and imperceptible, regardless of the duration, thereby improving the reliability of power supply in the data center. In addition, non-homologous equipment switching devices such as ATS (Automatic Transfer Switching) and STS (Static Transfer Switch) and other DC power supply equipment controllers can also be reduced to achieve cost savings, and the low switching reliability of ATS and STS can easily lead to interruptions.

[0057] The embodiments of this specification also provide a data center, which may be an IDC room (Internet Data Center) or other forms of data centers. The data center includes multiple loads and multiple power supply systems as described in any of the above embodiments corresponding to the number of the loads, the power supply systems are connected one-to-one with the loads, the loads include two input terminals, and the first parallel output terminal and the second parallel output terminal of the power supply system are respectively connected to the two input terminals of the loads. It should be noted that the description of the power supply system in the above embodiments and implementation methods is also applicable to the data center of this specification. In this embodiment, the load may be a server, head cabinet equipment, or other IT equipment such as front-end equipment or back-end equipment in the data center, and this specification does not limit this.

[0058] The data center of the present specification has a power supply system that connects the output ends of two non-homologous high-voltage DC rectifiers in parallel, uses two groups of such high-voltage DC rectifiers to connect to corresponding loads, and then outputs the electric energy of the two power supply energy sources to the corresponding loads, thereby realizing two-way power supply to the corresponding loads. When equipment fails or is maintained at any point in the entire circuit of any power supply energy source, the other power supply energy source can output the electric energy to the corresponding load through the corresponding high-voltage DC rectifier device, maintaining continuous power supply to the corresponding load, thereby improving the reliability of power supply to the data center.

[0059] The embodiment of the present specification also provides a power supply method applied to a power supply system, wherein the power supply system is used to supply power to a load, wherein the load includes two input terminals, and the power supply system includes:

[0060] The first high-voltage DC rectifier device group includes a first high-voltage DC rectifier device and a second high-voltage DC rectifier device, wherein an input end of the first high-voltage DC rectifier device is connected to a first power supply energy source, an input end of the second high-voltage DC rectifier device is connected to a second power supply energy source, an output end of the first high-voltage DC rectifier device and an output end of the second high-voltage DC rectifier device are connected in parallel to form a first parallel output end, and the first parallel output end is connected to an input end of a load.

[0061] The second high-voltage DC rectifier device group includes a third high-voltage DC rectifier device and a fourth high-voltage DC rectifier device, the input end of the third high-voltage DC rectifier device is connected to the first power supply energy, the input end of the fourth high-voltage DC rectifier device is connected to the second power supply energy, the output end of the third high-voltage DC rectifier device is connected in parallel with the output end of the fourth high-voltage DC rectifier device to form a second parallel output end, and the second parallel output end is connected to another input end of the load.

[0062] The power supply method includes: when the first power supply energy fails, the second high-voltage DC rectifier device and the fourth high-voltage DC rectifier device output the electric energy of the second power supply energy to the load. When the second power supply energy fails, the first high-voltage DC rectifier device and the third high-voltage DC rectifier device output the electric energy of the first power supply energy to the load.

[0063] The power supply method of this specification is a power supply system that connects the output ends of two non-homologous high-voltage DC rectifier devices in parallel, uses two groups of such high-voltage DC rectifier devices to connect to corresponding loads, and then outputs the electric energy of the two power supply energy sources to the corresponding loads, thereby realizing two-way power supply to the corresponding loads. When any point in the full circuit of any power supply energy source fails or is maintained, the other power supply energy source can output the electric energy to the corresponding load through the corresponding high-voltage DC rectifier device, maintaining continuous power supply to the corresponding load, thereby improving the reliability of power supply in the data center.

[0064] Those skilled in the art will readily appreciate other embodiments of the present specification after considering the specification and practicing the inventions disclosed herein. The present specification is intended to cover any variations, uses, or adaptations of the present specification that follow the general principles of the present specification and include common knowledge or customary techniques in the art that are not disclosed in the present specification. The description and examples are to be considered exemplary only, and the true scope and spirit of the present specification is indicated by the following claims.

[0065] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0066] The above description is only a preferred embodiment of this specification and is not intended to limit this specification. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of this specification should be included in the scope of protection of this specification.

Claims

1. A power supply system for supplying power to a load, wherein the load comprises two input terminals, characterized in that: The power supply system comprises: A first high-voltage DC rectifier device group includes a first high-voltage DC rectifier device and a second high-voltage DC rectifier device, wherein an input end of the first high-voltage DC rectifier device is connected to a first power supply energy source, an input end of the second high-voltage DC rectifier device is connected to a second power supply energy source, an output end of the first high-voltage DC rectifier device and an output end of the second high-voltage DC rectifier device are connected in parallel to form a first parallel output end, and the first parallel output end is connected to an input end of a load; a second high-voltage DC rectifier device group, comprising a third high-voltage DC rectifier device and a fourth high-voltage DC rectifier device, wherein an input end of the third high-voltage DC rectifier device is connected to a first power supply energy source, an input end of the fourth high-voltage DC rectifier device is connected to a second power supply energy source, an output end of the third high-voltage DC rectifier device is connected in parallel with an output end of the fourth high-voltage DC rectifier device to form a second parallel output end, and the second parallel output end is connected to another input end of the load; The input end of the first high-voltage DC rectifier device and the input end of the third high-voltage DC rectifier device are connected in parallel to form a first parallel input end, and a first switch device is provided between the first parallel input end and the first power supply energy source; a first transformer is also provided between the first parallel input end and the first power supply energy source; The input end of the second high-voltage DC rectifier device and the input end of the fourth high-voltage DC rectifier device are connected in parallel to form a second parallel input end, and a second switch device is provided between the second parallel input end and the second power supply energy source; a second transformer is also provided between the second parallel input end and the second power supply energy source; The first high-voltage DC rectifier device and the second high-voltage DC rectifier device are both provided with a controller, and the controller of the first high-voltage DC rectifier device is synchronously set with the controller of the second high-voltage DC rectifier device so that the operating voltages of the first high-voltage DC rectifier device and the second high-voltage DC rectifier device are the same.

2. The power supply system according to claim 1, characterized in that: It also includes a first energy storage unit connected to the first parallel output end.

3. The power supply system according to claim 1, characterized in that: It also includes a second energy storage unit connected to the second parallel output end.

4. The power supply system according to claim 1, characterized in that: When any one of the controllers of the first high-voltage DC rectifier device and the second high-voltage DC rectifier device fails, the first high-voltage DC rectifier device and the second high-voltage DC rectifier device are adjusted to the same operating voltage according to a preset logic.

5. The power supply system according to claim 1, characterized in that: The third high-voltage DC rectifier device and the fourth high-voltage DC rectifier device are both provided with a controller, and the controller of the third high-voltage DC rectifier device is synchronously arranged with the controller of the fourth high-voltage DC rectifier device so that the operating voltages of the third high-voltage DC rectifier device and the fourth high-voltage DC rectifier device are the same.

6. The power supply system according to claim 5, characterized in that: When any one of the controllers of the third high-voltage DC rectifier device and the fourth high-voltage DC rectifier device fails, the third high-voltage DC rectifier device and the fourth high-voltage DC rectifier device are adjusted to the same operating voltage according to a preset logic.

7. A data center, characterized in that: It includes a plurality of loads and a plurality of power supply systems corresponding to the number of the loads, the power supply systems are connected to the loads in a one-to-one correspondence, and the loads include two input terminals; Wherein, the power supply system comprises: A first high-voltage DC rectifier device group includes a first high-voltage DC rectifier device and a second high-voltage DC rectifier device, wherein an input end of the first high-voltage DC rectifier device is connected to a first power supply energy source, an input end of the second high-voltage DC rectifier device is connected to a second power supply energy source, an output end of the first high-voltage DC rectifier device and an output end of the second high-voltage DC rectifier device are connected in parallel to form a first parallel output end, and the first parallel output end is connected to an input end of a load; a second high-voltage DC rectifier device group, comprising a third high-voltage DC rectifier device and a fourth high-voltage DC rectifier device, wherein an input end of the third high-voltage DC rectifier device is connected to a first power supply energy source, an input end of the fourth high-voltage DC rectifier device is connected to a second power supply energy source, an output end of the third high-voltage DC rectifier device is connected in parallel with an output end of the fourth high-voltage DC rectifier device to form a second parallel output end, and the second parallel output end is connected to another input end of the load; The input end of the first high-voltage DC rectifier device and the input end of the third high-voltage DC rectifier device are connected in parallel to form a first parallel input end, and a first switch device is provided between the first parallel input end and the first power supply energy source; a first transformer is also provided between the first parallel input end and the first power supply energy source; The input end of the second high-voltage DC rectifier device and the input end of the fourth high-voltage DC rectifier device are connected in parallel to form a second parallel input end, and a second switch device is provided between the second parallel input end and the second power supply energy source; a second transformer is also provided between the second parallel input end and the second power supply energy source; The first high-voltage DC rectifier device and the second high-voltage DC rectifier device are both provided with a controller, and the controller of the first high-voltage DC rectifier device is synchronously set with the controller of the second high-voltage DC rectifier device so that the operating voltages of the first high-voltage DC rectifier device and the second high-voltage DC rectifier device are the same.

8. The data center according to claim 7, characterized in that: The power supply system further includes a first energy storage unit connected to the first parallel output end.

9. The data center according to claim 8, characterized in that: The power supply system further includes a second energy storage unit connected to the second parallel output terminal.

10. The data center according to claim 7, characterized in that: When any one of the controllers of the first high-voltage DC rectifier device and the second high-voltage DC rectifier device fails, the first high-voltage DC rectifier device and the second high-voltage DC rectifier device are adjusted to the same operating voltage according to a preset logic.

11. The data center according to claim 7, characterized in that: The third high-voltage DC rectifier device and the fourth high-voltage DC rectifier device are both provided with a controller, and the controller of the third high-voltage DC rectifier device is synchronously arranged with the controller of the fourth high-voltage DC rectifier device so that the operating voltages of the third high-voltage DC rectifier device and the fourth high-voltage DC rectifier device are the same.

12. The data center according to claim 11, characterized in that: When any one of the controllers of the third high-voltage DC rectifier device and the fourth high-voltage DC rectifier device fails, the third high-voltage DC rectifier device and the fourth high-voltage DC rectifier device are adjusted to the same operating voltage according to a preset logic.

13. A power supply method applied to a power supply system, characterized in that: The power supply system is used to supply power to a load, the load includes two input terminals, and the power supply system includes: A first high-voltage DC rectifier device group includes a first high-voltage DC rectifier device and a second high-voltage DC rectifier device, wherein an input end of the first high-voltage DC rectifier device is connected to a first power supply energy source, an input end of the second high-voltage DC rectifier device is connected to a second power supply energy source, an output end of the first high-voltage DC rectifier device and an output end of the second high-voltage DC rectifier device are connected in parallel to form a first parallel output end, and the first parallel output end is connected to an input end of a load; a second high-voltage DC rectifier device group, comprising a third high-voltage DC rectifier device and a fourth high-voltage DC rectifier device, wherein an input end of the third high-voltage DC rectifier device is connected to a first power supply energy source, an input end of the fourth high-voltage DC rectifier device is connected to a second power supply energy source, an output end of the third high-voltage DC rectifier device is connected in parallel with an output end of the fourth high-voltage DC rectifier device to form a second parallel output end, and the second parallel output end is connected to another input end of the load; The input end of the first high-voltage DC rectifier device and the input end of the third high-voltage DC rectifier device are connected in parallel to form a first parallel input end, and a first switch device is provided between the first parallel input end and the first power supply energy source; a first transformer is also provided between the first parallel input end and the first power supply energy source; The input end of the second high-voltage DC rectifier device and the input end of the fourth high-voltage DC rectifier device are connected in parallel to form a second parallel input end, and a second switch device is provided between the second parallel input end and the second power supply energy source; a second transformer is also provided between the second parallel input end and the second power supply energy source; The first high-voltage DC rectifier device and the second high-voltage DC rectifier device are both provided with a controller, and the controller of the first high-voltage DC rectifier device is synchronously arranged with the controller of the second high-voltage DC rectifier device so that the operating voltages of the first high-voltage DC rectifier device and the second high-voltage DC rectifier device are the same; The power supply method includes: when the first power supply energy fails, the second high-voltage DC rectifier device and the fourth high-voltage DC rectifier device output the electric energy of the second power supply energy to the load; when the second power supply energy fails, the first high-voltage DC rectifier device and the third high-voltage DC rectifier device output the electric energy of the first power supply energy to the load.

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