Ring redundant power supply system and control method for data center

Abstract

A ring redundant power supply system and control method for a data center, wherein the data center includes r devices to be powered, and the power supply system includes: 2n uninterruptible power supplies connected in a ring, wherein m adjacent uninterruptible power supplies power the same device, and two power supply lines between two adjacent uninterruptible power supplies and one device constitute a group of power supply circuits, and the two adjacent uninterruptible power supplies are powered by different mains circuits, m is an even number, and 2≤m≤2n, r≤2n; a circuit breaker is arranged on each group of power supply circuits, and by controlling the power on or off of the circuit breaker, one power supply line in a group of power supply circuits corresponding to each device is controlled to be shut down and the other power supply line to be in operation; wherein the uninterruptible power supply corresponding to the shut down power supply line is charged by the mains circuit and serves as a redundant power supply for the uninterruptible power supply corresponding to the in-operation power supply line, thereby realizing physical isolation, and improving power supply continuity and reliability while reducing the number of circuit breakers.

Description

Technical Field

[0001] The present invention belongs to the technical field of power supply and distribution, and in particular, relates to a ring redundant power supply system of a data center and a control method thereof. Background Art

[0002] Internet Data Center (IDC), or data center, is a physical carrier that carries massive amounts of data and can be used to store, calculate, and transmit data information. A typical data center mainly includes IT systems (e.g., servers, network switches, etc.), power supply systems (e.g., UPS, etc.), and cooling systems (e.g., precision air conditioners, etc.). Among them, the power supply system is the cornerstone of IDC operation. What architecture to use to power IDC is an issue that needs to be considered.

[0003] Common power supply and distribution architectures in data centers include 2N architecture, N+1 architecture, and DR (Distributed Redundant) architecture. However, 2N architecture and N+1 architecture have fully redundant power modules, and only when one of the power modules fails will the fully redundant power module start working. The DR architecture is more complex, requires multiple mains power, is difficult to operate and maintain, and is physically difficult to isolate equipment from lines.

[0004] The prior art provides a control method and a control device for a power supply device in a data center, which prioritizes the equipment in the data center. When the power of a first energy storage device that supplies power to a first device is low, the power input from the first power supply to a second UPS is reduced, and the second UPS supplies power to at least one second device. The services in the second device can be transferred and have a lower priority, thereby ensuring the normal operation of the services with higher priority in the first device and improving the power utilization of the first power supply. The prior art can optimize the power distribution system of a data center, but it uses a method of prioritizing equipment, the control logic is complex, and physical isolation is not achieved. The existing power supply system architecture has fully redundant power modules. The existing DR architecture has a complex structure and it is difficult to achieve physical isolation. Summary of the invention

[0005] In order to solve the deficiencies in the prior art, the present invention provides a ring redundant power supply system for a data center and a control method thereof, which realize physical isolation, reduce the number of circuit breakers and improve power supply continuity and reliability.

[0006] The present invention adopts the following technical solution.

[0007] The present invention proposes a ring redundant power supply system for a data center, wherein the data center includes r devices to be powered, and the power supply system includes:

[0008] 2n uninterruptible power supplies are connected in a ring, and m adjacent uninterruptible power supplies supply power to the same device. The two power supply lines between two adjacent uninterruptible power supplies and one device constitute a power supply circuit, and the two adjacent uninterruptible power supplies are powered by different mains circuits. m is an even number, and 2≤m≤2n, r≤2n;

[0009] A circuit breaker is set on each power supply circuit. By controlling the power on or off of the circuit breaker, one power supply line in a power supply circuit corresponding to each device can be shut down and the other power supply line can be kept in operation. Among them, the uninterruptible power supply corresponding to the shut down power supply line is charged by the AC power circuit and serves as a redundant power supply for the uninterruptible power supply corresponding to the operating power supply line.

[0010] Preferably, when m=2, two adjacent uninterruptible power supplies supply power to the same device; two power supply lines between the two adjacent uninterruptible power supplies and one device constitute a power supply circuit, and a circuit breaker is provided on the power supply circuit;

[0011] When m=4, four adjacent uninterruptible power supplies power the same device, and the two power supply lines between two adjacent uninterruptible power supplies and one device form one power supply circuit. One device corresponds to two power supply circuits. A circuit breaker is set on each power supply circuit.

[0012] By analogy, m adjacent uninterruptible power supplies supply power to the same device, and the two power supply lines between two adjacent uninterruptible power supplies and one device constitute one power supply circuit. One device corresponds to m / 2 power supply circuits; a circuit breaker is set on each power supply circuit.

[0013] Preferably, when m=2, one device is configured with only one circuit breaker, and the circuit breaker includes one normally open contact and one normally closed contact;

[0014] Normally open contacts are provided on all power supply lines between the uninterruptible power supply powered by the first mains circuit and the equipment, and normally closed contacts are provided on all power supply lines between the uninterruptible power supply powered by the second mains circuit and the equipment.

[0015] Preferably, when the circuit breaker loses power, the normally open contact is disconnected and the normally closed contact is closed, then the uninterruptible power supply supplied by the second mains circuit supplies power to each device, and the uninterruptible power supply supplied by the first mains circuit is in a charging state;

[0016] When the circuit breaker is energized, the normally open contacts are closed and the normally closed contacts are opened, and the uninterruptible power supply supplied by the first mains circuit supplies power to each device, and the uninterruptible power supply supplied by the second mains circuit is in a charging state.

[0017] Preferably, when m=4, one device is equipped with two circuit breakers, each circuit breaker includes two normally open contacts and two normally closed contacts;

[0018] A normally open contact parallel circuit is provided on the first power supply line between all uninterruptible power supplies powered by the first mains circuit and a device, and a normally closed contact parallel circuit is provided on the second power supply line between all uninterruptible power supplies powered by the first mains circuit and a device; wherein, one normally open contact of the first circuit breaker and one normally open contact of the second circuit breaker are connected in parallel to form a normally open contact parallel circuit, and one normally closed contact of the first circuit breaker and one normally closed contact of the second circuit breaker are connected in parallel to form a normally closed contact parallel circuit;

[0019] A first normally open normally closed contact parallel circuit is provided on the first power supply line between all uninterruptible power supplies powered by the second mains circuit and a device, and a second normally open normally closed contact parallel circuit is provided on the second power supply line between all uninterruptible power supplies powered by the second mains circuit and a device; wherein, another normally open contact of the first circuit breaker and another normally closed contact of the second circuit breaker are connected in parallel to form a first normally open normally closed contact parallel circuit, and another normally open contact of the second circuit breaker and another normally closed contact of the first circuit breaker are connected in parallel to form a second normally open normally closed contact parallel circuit.

[0020] Preferably, when the circuit breaker is energized, the normally open contact is closed and the normally closed contact is disconnected, then the uninterruptible power supply connected to the first power supply line and powered by the first mains circuit supplies power to one device, the uninterruptible power supply connected to the second power supply line and powered by the first mains circuit is in a charging state, and at the same time, the uninterruptible power supply powered by the second mains circuit supplies power to one device through two power supply lines;

[0021] When the circuit breaker loses power, the normally open contact opens and the normally closed contact closes, then the uninterruptible power supply connected to the second power supply line and powered by the first mains circuit supplies power to a device, the uninterruptible power supply connected to the first power supply line and powered by the first mains circuit is in a charging state, and at the same time, the uninterruptible power supply powered by the second mains circuit supplies power to a device through two power supply lines.

[0022] By analogy, when m adjacent uninterruptible power supplies are used to supply power to the same device, the two power supply lines between two adjacent uninterruptible power supplies and one device constitute one power supply circuit, and one device corresponds to m / 2 power supply circuits; a total of m / 2 circuit breakers are configured in the power supply system, and each circuit breaker includes at least m / 2 normally open contacts and m / 2 normally closed contacts;

[0023] A normally open contact parallel circuit is set on the first power supply line between all uninterruptible power supplies powered by the first mains circuit and a device, and a normally closed contact parallel circuit is set on the remaining m / 2-1 power supply lines between all uninterruptible power supplies powered by the first mains circuit and a device; among them, one normally open contact of m / 2 circuit breakers is connected in parallel to form a normally open contact parallel circuit, and one normally closed contact of m / 2 circuit breakers is connected in parallel to form a normally closed contact parallel circuit;

[0024] Normally open and normally closed contact parallel circuits are set on the m power supply lines between all uninterruptible power supplies powered by the second AC power circuit and a device, among which another normally open contact of 1 circuit breaker and another normally closed contact of m / 2-1 circuit breaker are connected in parallel to form a normally open and normally closed contact parallel circuit.

[0025] Preferably, when the circuit breaker is energized, the normally open contact is closed and the normally closed contact is disconnected, then the uninterruptible power supply connected to the first power supply line and powered by the first mains circuit supplies power to one device, and the uninterruptible power supply connected to the remaining m / 2-1 power supply lines and powered by the first mains circuit is in a charging state, and at the same time, the uninterruptible power supply powered by the second mains circuit supplies power to one device through m power supply lines;

[0026] When the circuit breaker loses power, the normally open contact opens and the normally closed contact closes, then the uninterruptible power supply powered by the first AC power circuit connected to the remaining m / 2-1 power supply lines supplies power to a device, the uninterruptible power supply powered by the first AC power circuit connected to the first power supply line is in a charging state, and at the same time, the uninterruptible power supply powered by the second AC power circuit supplies power to a device through two power supply lines.

[0027] The present invention also proposes a control method for a ring redundant power supply system of a data center, comprising:

[0028] Obtain the power of each uninterruptible power supply and the power status of the circuit breaker corresponding to each device; the power status of the circuit breaker includes: the circuit breaker is powered on and the circuit breaker is powered off;

[0029] When the power supply line between the uninterruptible power supply with power lower than the threshold and the equipment is configured with a normally open contact parallel circuit, the circuit breaker corresponding to the control equipment loses power;

[0030] When the power supply line between the uninterruptible power supply with power lower than the threshold and the equipment is configured with a normally closed contact parallel circuit, the circuit breaker corresponding to the control equipment is energized;

[0031] The threshold is determined according to the standard specification of the uninterruptible power supply.

[0032] The control method of the ring redundant power supply system of the data center proposed by the present invention also includes:

[0033] Obtain the priority of data processing services in each device;

[0034] Obtain the power of each uninterruptible power supply connected to the devices with high priority;

[0035] Compare the power of the uninterruptible power supply connected to the power supply line of the normally open contact parallel circuit with the power supply line of the normally closed contact parallel circuit of the device with a higher priority level; when the power of the uninterruptible power supply connected to the power supply line of the normally open contact parallel circuit is low, the circuit breaker corresponding to the control device loses power; when the power of the uninterruptible power supply connected to the power supply line of the normally closed contact parallel circuit is low, the circuit breaker corresponding to the control device is energized.

[0036] The present invention is also a terminal, comprising a processor and a storage medium; the storage medium is used to store instructions; the processor is used to operate according to the instructions to execute the steps of the method.

[0037] The present invention is also a computer-readable storage medium having a computer program stored thereon, which implements the steps of the method when executed by a processor.

[0038] The beneficial effects of the present invention are that, compared with the prior art, at least the ring redundancy mode is adopted, when the UPS is not faulty, the power modules formed by each UPS can also supply power normally; when the UPS fails, there are also mutually redundant UPSs to supply power to the equipment. The ring redundant power supply system has a simple structure, a circuit breaker is set on the line between the equipment and the UPS, and the normally open contacts and normally closed contacts of the circuit breaker are used to achieve physical isolation, thereby saving the number of circuit breakers. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 is a structural schematic diagram of a ring redundant power supply system when m=2 in an embodiment of the present invention;

[0040] Figure 2 is a structural schematic diagram of a ring redundant power supply system when m=4 in an embodiment of the present invention;

[0041] Figure 3 is a schematic diagram of the physical isolation structure of the ring redundant power supply system when m=2 in an embodiment of the present invention;

[0042] Figure 4 1 is a schematic diagram of a physical isolation structure of a ring redundant power supply system when m=4 in an embodiment of the present invention;

[0043] Figure 5 4 is another schematic diagram of the physical isolation structure of the ring redundant power supply system when m=4 in an embodiment of the present invention. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical scheme and advantages of the present invention clearer, the technical scheme of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The embodiments described in this application are only embodiments of a part of the present invention, rather than all embodiments. Based on the spirit of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the protection scope of the present invention.

[0045] The present invention provides a ring redundant power supply system for a data center, wherein the data center comprises r devices to be powered, 2n uninterruptible power supplies connected in a ring, m adjacent uninterruptible power supplies power the same device, two power supply lines between two adjacent uninterruptible power supplies and one device constitute a group of power supply circuits, and the two adjacent uninterruptible power supplies are powered by different mains circuits, m is an even number, and 2≤m≤2n, r≤2n;

[0046] Among them, two adjacent UPS are powered by different AC power circuits and are redundant to each other;

[0047] In the embodiment, the ring redundant power supply system when n=3 and m=2 is as follows Figure 1 As shown, there are 6 UPS connected in a ring, namely UPS-A1, UPS-A2, UPS-A3, UPS-B1, UPS-B2, and UPS-B3, among which UPS-A1, UPS-A2, and UPS-A3 are powered by the first mains circuit, and UPS-B1, UPS-B2, and UPS-B3 are powered by the second mains circuit; UPS-B3 and UPS-A1 are redundant and supply power to device r6, UPS-A1 and UPS-B1 are redundant and supply power to device r1, UPS-B1 and UPS-A2 are redundant and supply power to redundant device r2, and so on. The ring redundant power supply system when n=3 and m=2 realizes reliable power supply to 6 devices r1, r2, r3, r4, r5, and r6.

[0048] In the embodiment, the ring redundant power supply system when n=2 and m=4 is as follows Figure 2 As shown, there are four UPS connected in a ring, namely UPS-A1, UPS-A2, UPS-B1, and UPS-B2. Among them, UPS-A1 and UPS-A2 are powered by the first AC power circuit, and UPS-B1 and UPS-B2 are powered by the second AC power circuit; the four UPS are redundant and supply power to each device at the same time.

[0049] The equipment includes but is not limited to servers and switches.

[0050] by Figure 1Taking the ring redundant power supply system shown as an example, device r1 is powered by UPS-A1 and UPS-B1. When UPS-A1 fails, UPS-B1 will power device r1, ensuring that when one UPS that supplies power to the device fails, there is another UPS to supply power to the device. In addition, in the ring connection structure, two adjacent UPSs are powered by different AC power circuits, and UPSs powered by different AC power circuits are arranged alternately. When one AC power circuit fails, although the UPS powered by the AC power circuit stops operating, the UPS powered by the other AC power circuit will normally supply power to the device, ensuring the power supply reliability of the data center.

[0051] In a ring redundant power supply system, 2n UPS can supply power to a maximum of 2n devices, which is equivalent to one UPS supplying power to one device. The power supply utilization rate of the UPS is relatively high.

[0052] In addition, in order to address the problem that it is difficult to achieve physical isolation between devices and lines in the DR architecture, in the ring redundant power supply system of the present invention, corresponding switch circuits are provided on the lines between each UPS and IT equipment, and physical isolation of IT equipment and corresponding lines is achieved by controlling the on and off of the switch circuits. In the ring redundant power supply system when n=2 and m=2, if switches are provided on each line and each switch is independent of each other, 8 switches are required. When m≥4, if a device is connected to 4 or more UPS, the power supply lines from the device to the UPS increase, and more circuit breakers are still required. Figure 4 Taking the structure shown as an example, if n=2, each AC power line is connected to two UPSs, and if m=4, each device is powered by four UPSs. If a circuit breaker is configured on each line, a total of 2mn=16 circuit breakers are required, that is, the ring redundant power supply system requires 2×m×n switches, which makes the circuit complex and increases the cost.

[0053] The present invention utilizes the mutual redundancy of the power supply lines of the same equipment, and proposes that in the power supply system, a circuit breaker is arranged on each group of power supply circuits, and by controlling the power on or off of the circuit breaker, one power supply line in a group of power supply circuits corresponding to each equipment is controlled to be shut down and the other power supply line is controlled to be in operation; wherein the uninterruptible power supply corresponding to the shut down power supply line is charged by the mains circuit and serves as a redundant power supply for the uninterruptible power supply corresponding to the in-operation power supply line; comprising:

[0054] 1) When m=2, two adjacent uninterruptible power supplies supply power to the same device; the two power supply lines between the two adjacent uninterruptible power supplies and one device constitute a power supply circuit, and a circuit breaker is set on this power supply circuit;

[0055] When m=2, one device is equipped with only one circuit breaker, and the circuit breaker includes one normally open contact and one normally closed contact; all power supply lines between the uninterruptible power supply powered by the first mains circuit and the device are provided with normally open contacts, and all power supply lines between the uninterruptible power supply powered by the second mains circuit and the device are provided with normally closed contacts; in the embodiment, Figure 3 As shown, device r1 is equipped with a circuit breaker, and a normally open contact K11 is set on the power supply line between device r1 and UPS-A1 powered by the first mains circuit, and a normally closed contact K12 is set on the power supply line between device r1 and UPS-B1 powered by the second mains circuit; device r2 is equipped with a circuit breaker, and a normally open contact K21 is set on the power supply line between device r2 and UPS-A2 powered by the first mains circuit, and a normally closed contact K22 is set on the power supply line between device r2 and UPS-B1 powered by the second mains circuit; device r3 is equipped with a circuit breaker, and a normally open contact K31 is set on the power supply line between device r3 and UPS-A2 powered by the first mains circuit, and a normally closed contact K32 is set on the power supply line between device r3 and UPS-B1 powered by the second mains circuit. A normally closed contact K32 is set on the power supply line between the device r4 and the UPS-B2 powered by the first mains circuit; the device r4 is equipped with a circuit breaker, and a normally open contact K41 is set on the power supply line between the device r4 and the UPS-A1 powered by the first mains circuit, and a normally closed contact K42 is set on the power supply line between the device r4 and the UPS-B2 powered by the second mains circuit; in the power supply system proposed by the present invention, a normally open contact is set on the power supply line between the device and the UPS powered by the first mains circuit, and a normally closed contact is set on the power supply line between the device and the UPS powered by the second mains circuit. On the basis of reducing the number of circuit breakers, it is ensured that when a certain mains circuit fails, the states of all contacts are consistent, the control logic is simple, and programming is convenient for implementation.

[0056] When the circuit breaker loses power, the normally open contact is disconnected and the normally closed contact is closed, then the uninterruptible power supply supplied by the second mains circuit supplies power to each device, and the uninterruptible power supply supplied by the first mains circuit is in a charging state; when the circuit breaker is powered, the normally open contact is closed and the normally closed contact is disconnected, then the uninterruptible power supply supplied by the first mains circuit supplies power to each device, and the uninterruptible power supply supplied by the second mains circuit is in a charging state; in the embodiment, Figure 3 The two power supply lines of device r1 are connected to UPS-A1 and UPS-B1 respectively through the normally open contact K11 and normally closed contact K12 of the same circuit breaker K1. Therefore, only one of the two power supply lines of device r1 is conductive, so only one UPS is used to power the device. When circuit breaker K1 loses power, the normally open contact K11 is disconnected and the normally closed contact K12 is closed, and UPS-B1 supplies power to device r1; when circuit breaker K1 is powered, the normally open contact K11 is closed and the normally closed contact K12 is disconnected, and UPS-A1 supplies power to device r1.

[0057] By configuring the normally open contacts and normally closed contacts of the circuit breaker, when the UPS powered by the first AC power circuit supplies power to the equipment, the UPS powered by the second AC power circuit does not supply power to the equipment, thereby achieving physical isolation between the non-powered UPS and the equipment; when the power of the UPS supplying power to the equipment is low, the low-power UPS is isolated while the UPS with sufficient power is put into use to supply power to the equipment.

[0058] 2) When m=4, four adjacent uninterruptible power supplies supply power to the same device, and the two power supply lines between two adjacent uninterruptible power supplies and one device form one power supply circuit. One device corresponds to two power supply circuits; a circuit breaker is set on each power supply circuit;

[0059] When m=4, one device is equipped with two circuit breakers, each circuit breaker includes 2 normally open contacts and 2 normally closed contacts;

[0060] A normally open contact parallel circuit is provided on the first power supply line between all uninterruptible power supplies powered by the first mains circuit and a device, and a normally closed contact parallel circuit is provided on the second power supply line between all uninterruptible power supplies powered by the first mains circuit and a device; wherein, one normally open contact of the first circuit breaker and one normally open contact of the second circuit breaker are connected in parallel to form a normally open contact parallel circuit, and one normally closed contact of the first circuit breaker and one normally closed contact of the second circuit breaker are connected in parallel to form a normally closed contact parallel circuit;

[0061] A first normally open normally closed contact parallel circuit is provided on the first power supply line between all uninterruptible power supplies powered by the second mains circuit and a device, and a second normally open normally closed contact parallel circuit is provided on the second power supply line between all uninterruptible power supplies powered by the second mains circuit and a device; wherein, another normally open contact of the first circuit breaker and another normally closed contact of the second circuit breaker are connected in parallel to form a first normally open normally closed contact parallel circuit, and another normally open contact of the second circuit breaker and another normally closed contact of the first circuit breaker are connected in parallel to form a second normally open normally closed contact parallel circuit;

[0062] In the embodiment, Figure 4 As shown in the figure, when m is 4, the four adjacent UPSs supply power to the same device. Among the four adjacent UPSs, two UPSs are powered by one AC power circuit, two UPSs are powered by another AC power circuit, and the two adjacent UPSs powered by one AC power circuit are both powered by another AC power circuit; the device is connected to the four UPSs respectively through power supply lines;

[0063] like Figure 4As shown, the device r1 is equipped with two circuit breakers K1 and K2, wherein the first normally open contacts K11-1 and K21-1 of the two circuit breakers are connected in parallel and then connected in series to the power supply line between the device r1 and the UPS-A1 powered by the first mains circuit; the second normally open contact K11-2 of one circuit breaker and the first normally closed contact K22-1 of the other circuit breaker are connected in parallel and then connected in series to the power supply line between the device r1 and the UPS-B1 powered by the second mains circuit; the first normally closed contact K12-1 of one circuit breaker and the second normally closed contact K22-2 of the other circuit breaker are connected in parallel and then connected in series to the power supply line between the device r1 and the UPS-A2 powered by the first mains circuit; the second normally closed contact K12-2 of one circuit breaker and the second normally open contact K21-2 of the other circuit breaker are connected in parallel and then connected in series to the power supply line between the device r1 and the UPS-B2 powered by the second mains circuit;

[0064] like Figure 5 As shown, the device r2 is equipped with two circuit breakers K3 and K4, wherein the second normally open contacts K31-2 and K41-2 of the two circuit breakers are connected in parallel and then connected in series to the power supply line between the device r2 and the UPS-A1 powered by the first mains circuit; the first normally open contact K31-1 of one circuit breaker and the first normally closed contact K42-1 of the other circuit breaker are connected in parallel and then connected in series to the power supply line between the device r1 and the UPS-B1 powered by the second mains circuit; the first normally closed contact K32-1 of one circuit breaker and the second normally closed contact K42-2 of the other circuit breaker are connected in parallel and then connected in series to the power supply line between the device r1 and the UPS-A2 powered by the first mains circuit; the second normally closed contact K32-2 of one circuit breaker and the first normally open contact K41-1 of the other circuit breaker are connected in parallel and then connected in series to the power supply line between the device r1 and the UPS-B2 powered by the second mains circuit;

[0065] When the circuit breaker is energized, the normally open contact is closed and the normally closed contact is disconnected, then the uninterruptible power supply connected to the first power supply line and powered by the first mains circuit supplies power to one device, and the uninterruptible power supply connected to the second power supply line and powered by the first mains circuit is in a charging state, and at the same time, the uninterruptible power supply powered by the second mains circuit supplies power to one device through two power supply lines;

[0066] When the circuit breaker loses power, the normally open contact opens and the normally closed contact closes, then the uninterruptible power supply connected to the second power supply line and powered by the first mains circuit supplies power to a device, the uninterruptible power supply connected to the first power supply line and powered by the first mains circuit is in a charging state, and at the same time, the uninterruptible power supply powered by the second mains circuit supplies power to a device through two power supply lines.

[0067] The power supply system is equipped with m / 2 circuit breakers, and each circuit breaker includes at least m / 2 normally open contacts and m / 2 normally closed contacts;

[0068] A normally open contact parallel circuit is set on the first power supply line between all uninterruptible power supplies powered by the first mains circuit and a device, and a normally closed contact parallel circuit is set on the remaining m / 2-1 power supply lines between all uninterruptible power supplies powered by the first mains circuit and a device; among them, one normally open contact of m / 2 circuit breakers is connected in parallel to form a normally open contact parallel circuit, and one normally closed contact of m / 2 circuit breakers is connected in parallel to form a normally closed contact parallel circuit;

[0069] Normally open and normally closed contact parallel circuits are set on all m power supply lines between the uninterruptible power supply powered by the second mains circuit and a device, in which another normally open contact of 1 circuit breaker and another normally closed contact of m / 2-1 circuit breaker are connected in parallel to form a normally open and normally closed contact parallel circuit;

[0070] When the circuit breaker is energized, the normally open contact is closed and the normally closed contact is disconnected, then the uninterruptible power supply connected to the first power supply line and powered by the first mains circuit supplies power to one device, and the uninterruptible power supply connected to the remaining m / 2-1 power supply lines and powered by the first mains circuit is in a charging state, and at the same time, the uninterruptible power supply powered by the second mains circuit supplies power to one device through m power supply lines;

[0071] When the circuit breaker loses power, the normally open contact opens and the normally closed contact closes, then the uninterruptible power supply powered by the first AC power circuit connected to the remaining m / 2-1 power supply lines supplies power to a device, the uninterruptible power supply powered by the first AC power circuit connected to the first power supply line is in a charging state, and at the same time, the uninterruptible power supply powered by the second AC power circuit supplies power to a device through two power supply lines.

[0072] The power supply system proposed by the present invention maximizes the use of switch contact resources of the circuit breaker to reduce the number of circuit breakers and reduce costs. Figure 4 and 5 Only 8 circuit breakers are configured in the ring redundant power supply system to achieve physical isolation between the equipment and the line in the DR architecture. Moreover, based on the setting of the normally open and normally closed contact parallel circuit, the uninterruptible power supply powered by the second mains circuit always supplies power to the equipment through two power supply lines, thus ensuring that the uninterruptible power supply powered by the first mains circuit does not cut off the power supply to the equipment during the switching control process, reducing the number of circuit breakers while improving the continuity and reliability of power supply.

[0073] The present invention also proposes a control method for a ring redundant power supply system of a data center, comprising:

[0074] Step 1, obtaining the power of each uninterruptible power supply and the power status of the circuit breaker corresponding to each device;

[0075] The energized conditions of the circuit breaker include: the circuit breaker is energized and the circuit breaker is de-energized.

[0076] Step 2: When a normally open contact parallel circuit is configured on the power supply line between the uninterruptible power supply with power lower than the threshold and the device, the circuit breaker corresponding to the control device is powered off; when a normally closed contact parallel circuit is configured on the power supply line between the uninterruptible power supply with power lower than the threshold and the device, the circuit breaker corresponding to the control device is powered on.

[0077] When the circuit breaker is energized, each contact operates, including: the normally closed contact opens and the normally open contact closes;

[0078] When the circuit breaker loses power, the contacts do not operate.

[0079] The threshold is determined according to the standard specification of the uninterruptible power supply.

[0080] By controlling the power supply or power failure of the circuit breaker, the uninterruptible power supply with power below the threshold can be physically isolated, and automatically switched to the redundant backup uninterruptible power supply to power the equipment, realizing convenient and reliable automated operation without increasing the complexity of the system.

[0081] The control method of the ring redundant power supply system of the data center proposed by the present invention also includes:

[0082] Obtain the priority of data processing services in each device;

[0083] Obtain the power of each uninterruptible power supply connected to the devices with high priority;

[0084] Compare the power of the uninterruptible power supply connected to the power supply line of the normally open contact parallel circuit with the power supply line of the normally closed contact parallel circuit of the device with a higher priority level; when the power of the uninterruptible power supply connected to the power supply line of the normally open contact parallel circuit is low, the circuit breaker corresponding to the control device loses power; when the power of the uninterruptible power supply connected to the power supply line of the normally closed contact parallel circuit is low, the circuit breaker corresponding to the control device is energized.

[0085] Through the above control method, the equipment with high priority can use electricity reliably, and the utilization rate of the uninterruptible power supply with sufficient power can be improved.

[0086] The present disclosure may be a system, a method and / or a computer program product. The computer program product may include a computer-readable storage medium carrying computer-readable program instructions for causing a processor to implement various aspects of the present disclosure.

[0087] A computer-readable storage medium may be a tangible device that can hold and store instructions used by an instruction execution device. A computer-readable storage medium may be, for example, but not limited to, an electrical storage device, a magnetic storage device, an optical storage device, an electromagnetic storage device, a semiconductor storage device, or any suitable combination of the above. More specific examples (a non-exhaustive list) of computer-readable storage media include: a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), a static random access memory (SRAM), a portable compact disk read-only memory (CD-ROM), a digital versatile disk (DVD), a memory stick, a floppy disk, a mechanical encoding device, such as a punch card or a raised structure in a groove on which instructions are stored, and any suitable combination of the above. The computer-readable storage medium used herein is not to be interpreted as a transient signal itself, such as a radio wave or other freely propagating electromagnetic wave, an electromagnetic wave propagating through a waveguide or other transmission medium (e.g., a light pulse through a fiber optic cable), or an electrical signal transmitted through a wire.

[0088] The computer-readable program instructions described herein can be downloaded from a computer-readable storage medium to each computing / processing device, or downloaded to an external computer or external storage device via a network, such as the Internet, a local area network, a wide area network, and / or a wireless network. The network can include copper transmission cables, optical fiber transmissions, wireless transmissions, routers, firewalls, switches, gateway computers, and / or edge servers. The network adapter card or network interface in each computing / processing device receives the computer-readable program instructions from the network and forwards the computer-readable program instructions for storage in the computer-readable storage medium in each computing / processing device.

[0089] The computer program instructions for performing the operations of the present disclosure may be assembly instructions, instruction set architecture (ISA) instructions, machine instructions, machine-dependent instructions, microcode, firmware instructions, state setting data, or source code or object code written in any combination of one or more programming languages, including object-oriented programming languages, such as Smalltalk, C++, etc., and conventional procedural programming languages, such as "C" language or similar programming languages. The computer-readable program instructions may be executed entirely on the user's computer, partially on the user's computer, as a separate software package, partially on the user's computer, partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., using an Internet service provider to connect through the Internet). In some embodiments, by using the state information of the computer-readable program instructions to personalize an electronic circuit, such as a programmable logic circuit, a field programmable gate array (FPGA), or a programmable logic array (PLA), the electronic circuit may execute the computer-readable program instructions, thereby implementing various aspects of the present disclosure.

[0090] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents, and any modifications or equivalent replacements that do not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A ring redundant power supply system for a data center, wherein the data center includes r devices to be powered, characterized in that: The power supply system includes: 2n uninterruptible power supplies are connected in a ring, and m adjacent uninterruptible power supplies supply power to the same device. The two power supply lines between two adjacent uninterruptible power supplies and one device constitute a power supply circuit, and the two adjacent uninterruptible power supplies are powered by different mains circuits. m is an even number, and 2≤m≤2n, r≤2n; A circuit breaker is set on each power supply circuit. By controlling the power on or off of the circuit breaker, one power supply line in a power supply circuit corresponding to each device is shut down and the other power supply line is kept in operation. The uninterruptible power supply corresponding to the shut down power supply line is charged by the mains circuit and serves as a redundant power supply for the uninterruptible power supply corresponding to the running power supply line. When m adjacent uninterruptible power supplies are used to supply power to the same device, the two power supply lines between two adjacent uninterruptible power supplies and one device constitute one power supply circuit, and one device corresponds to m / 2 power supply circuits; a total of m / 2 circuit breakers are configured in the power supply system, and each circuit breaker includes at least m / 2 normally open contacts and m / 2 normally closed contacts; A normally open contact parallel circuit is set on the first power supply line between all uninterruptible power supplies powered by the first mains circuit and a device, and a normally closed contact parallel circuit is set on the remaining m / 2-1 power supply lines between all uninterruptible power supplies powered by the first mains circuit and a device; among them, one normally open contact of m / 2 circuit breakers is connected in parallel to form a normally open contact parallel circuit, and one normally closed contact of m / 2 circuit breakers is connected in parallel to form a normally closed contact parallel circuit; Normally open and normally closed contact parallel circuits are set on the m power supply lines between all uninterruptible power supplies powered by the second AC power circuit and a device, among which another normally open contact of 1 circuit breaker and another normally closed contact of m / 2-1 circuit breaker are connected in parallel to form a normally open and normally closed contact parallel circuit.

2. The ring redundant power supply system for a data center according to claim 1, characterized in that: When m=2, two adjacent uninterruptible power supplies supply power to the same device; two power supply lines between two adjacent uninterruptible power supplies and one device form a power supply circuit, and a circuit breaker is set on the power supply circuit; When m=4, four adjacent uninterruptible power supplies power the same device, and the two power supply lines between two adjacent uninterruptible power supplies and one device form one power supply circuit. One device corresponds to two power supply circuits. A circuit breaker is set on each power supply circuit. m adjacent uninterruptible power supplies supply power to the same device, and the two power supply lines between two adjacent uninterruptible power supplies and one device form one power supply circuit. One device corresponds to m / 2 power supply circuits; a circuit breaker is set on each power supply circuit.

3. The ring redundant power supply system for a data center according to claim 2, characterized in that: When m=2, one device is equipped with only one circuit breaker, which includes one normally open contact and one normally closed contact; Normally open contacts are provided on all power supply lines between the uninterruptible power supply powered by the first mains circuit and the equipment, and normally closed contacts are provided on all power supply lines between the uninterruptible power supply powered by the second mains circuit and the equipment.

4. The ring redundant power supply system for a data center according to claim 3, characterized in that: When the circuit breaker loses power, the normally open contact is disconnected and the normally closed contact is closed, and the uninterruptible power supply supplied by the second mains circuit supplies power to each device, and the uninterruptible power supply supplied by the first mains circuit is in a charging state; When the circuit breaker is energized, the normally open contacts are closed and the normally closed contacts are opened, and the uninterruptible power supply supplied by the first mains circuit supplies power to each device, and the uninterruptible power supply supplied by the second mains circuit is in a charging state.

5. The ring redundant power supply system for a data center according to claim 2, characterized in that: When m=4, one device is equipped with two circuit breakers, each circuit breaker includes 2 normally open contacts and 2 normally closed contacts; A normally open contact parallel circuit is provided on the first power supply line between all uninterruptible power supplies powered by the first mains circuit and a device, and a normally closed contact parallel circuit is provided on the second power supply line between all uninterruptible power supplies powered by the first mains circuit and a device; wherein, one normally open contact of the first circuit breaker and one normally open contact of the second circuit breaker are connected in parallel to form a normally open contact parallel circuit, and one normally closed contact of the first circuit breaker and one normally closed contact of the second circuit breaker are connected in parallel to form a normally closed contact parallel circuit; A first normally open normally closed contact parallel circuit is provided on the first power supply line between all uninterruptible power supplies powered by the second mains circuit and a device, and a second normally open normally closed contact parallel circuit is provided on the second power supply line between all uninterruptible power supplies powered by the second mains circuit and a device; wherein, another normally open contact of the first circuit breaker and another normally closed contact of the second circuit breaker are connected in parallel to form a first normally open normally closed contact parallel circuit, and another normally open contact of the second circuit breaker and another normally closed contact of the first circuit breaker are connected in parallel to form a second normally open normally closed contact parallel circuit.

6. The ring redundant power supply system for a data center according to claim 5, characterized in that: When the circuit breaker is energized, the normally open contact is closed and the normally closed contact is disconnected, then the uninterruptible power supply connected to the first power supply line and powered by the first mains circuit supplies power to one device, and the uninterruptible power supply connected to the second power supply line and powered by the first mains circuit is in a charging state, and at the same time, the uninterruptible power supply powered by the second mains circuit supplies power to one device through two power supply lines; When the circuit breaker loses power, the normally open contact opens and the normally closed contact closes, then the uninterruptible power supply connected to the second power supply line and powered by the first mains circuit supplies power to a device, the uninterruptible power supply connected to the first power supply line and powered by the first mains circuit is in a charging state, and at the same time, the uninterruptible power supply powered by the second mains circuit supplies power to a device through two power supply lines.

7. The ring redundant power supply system for a data center according to claim 1, characterized in that: When the circuit breaker is energized, the normally open contact is closed and the normally closed contact is disconnected, then the uninterruptible power supply connected to the first power supply line and powered by the first mains circuit supplies power to one device, and the uninterruptible power supply connected to the remaining m / 2-1 power supply lines and powered by the first mains circuit is in a charging state, and at the same time, the uninterruptible power supply powered by the second mains circuit supplies power to one device through m power supply lines; When the circuit breaker loses power, the normally open contact opens and the normally closed contact closes, then the uninterruptible power supply powered by the first AC power circuit connected to the remaining m / 2-1 power supply lines supplies power to a device, the uninterruptible power supply powered by the first AC power circuit connected to the first power supply line is in a charging state, and at the same time, the uninterruptible power supply powered by the second AC power circuit supplies power to a device through two power supply lines.

8. A control method for a ring redundant power supply system of a data center, applicable to the ring redundant power supply system of a data center according to any one of claims 1 to 7, characterized in that: include: Obtain the power of each uninterruptible power supply and the power status of the circuit breaker corresponding to each device; the power status of the circuit breaker includes: the circuit breaker is powered on and the circuit breaker is powered off; When the power supply line between the uninterruptible power supply with power lower than the threshold and the equipment is configured with a normally open contact parallel circuit, the circuit breaker corresponding to the control equipment loses power; When the power supply line between the uninterruptible power supply with power lower than the threshold and the equipment is configured with a normally closed contact parallel circuit, the circuit breaker corresponding to the control equipment is energized; The threshold is determined according to the standard specification of the uninterruptible power supply.

9. The control method of the ring redundant power supply system of the data center according to claim 8, characterized in that: Also includes: Obtain the priority of data processing services in each device; Obtain the power of each uninterruptible power supply connected to the devices with high priority; Compare the power of the uninterruptible power supply connected to the power supply line of the normally open contact parallel circuit with the power supply line of the normally closed contact parallel circuit of the device with a higher priority level; when the power of the uninterruptible power supply connected to the power supply line of the normally open contact parallel circuit is low, the circuit breaker corresponding to the control device loses power; when the power of the uninterruptible power supply connected to the power supply line of the normally closed contact parallel circuit is low, the circuit breaker corresponding to the control device is energized.

10. A terminal comprising a processor and a storage medium; characterized in that: The storage medium is used to store instructions; The processor is configured to operate according to the instructions to execute the steps of the method according to claim 8 or 9.

11. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the steps of the method according to claim 8 or 9 are implemented.

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