Power distribution systems for large data centers

Abstract

The present invention discloses a power distribution system for a large data center, which relates to the technical field of power distribution equipment, and can provide safe and reliable power supply to ensure the continuous and stable operation of a large data center. The power distribution system includes a generator set, a first mains incoming line cabinet, a second mains incoming line cabinet, a parallel bus, a load bus, a first backup line, a second backup line, a power generation system controller, and a power distribution system controller. The generator set is connected to the parallel bus, and the parallel bus is connected to the load bus through the first backup line and the second backup line. A bus cabinet for dividing the load bus into two sections is provided on the load bus. The first mains incoming line cabinet connects the first mains power to one section of the load bus, and the second mains incoming line cabinet connects the second mains power to the other section of the load bus. A first emergency incoming line cabinet is provided on the first backup line, and a second emergency incoming line cabinet is provided on the second backup line.

Description

Technical Field

[0001] The present invention relates to the technical field of power distribution equipment, and in particular to a power distribution system for a large data center. Background Art

[0002] As society becomes more and more dependent on the Internet, the requirements for the reliability of the power supply system that provides power to data centers are also increasing. Measures to improve power supply safety, such as dual mains power supply, are being adopted. The power distribution system of the data center integrates various safe power supply solutions of users through reasonable planning of power supply measures, providing users with high-quality, safest and most reliable power supply guarantee.

[0003] The power distribution system is a large system and a core component of the data center. The existing power distribution system lacks redundant design of control switches. When a single power supply line has problems, it cannot be replaced in time. This will lead to the inability to effectively protect the power distribution system and provide a stable power supply to electrical equipment. Summary of the invention

[0004] The purpose of the present invention is to provide a power distribution system for a large data center, which can provide safe and reliable power supply and ensure the continuous and stable operation of the large data center.

[0005] In order to achieve the above-mentioned object, the present invention provides a power distribution system for a large data center, comprising a generator set, a first mains incoming line cabinet, a second mains incoming line cabinet, a parallel bus, a load bus, a first standby line, a second standby line, a power generation system controller and a power distribution system controller, wherein the generator set is connected to the parallel bus, one end of the first standby line and the second standby line are respectively connected to the parallel bus, the other ends of the first standby line and the second standby line are respectively connected to the load bus, a bus cabinet for dividing the load bus into two sections is provided on the load bus, the first mains incoming line cabinet connects a first mains power to one section of the load bus, the second mains incoming line cabinet connects a second mains power to the other section of the load bus, a first emergency incoming line cabinet is provided on the first standby line, a second emergency incoming line cabinet is provided on the second standby line, the power generation system controller is respectively connected to the generator set and the power distribution system controller, and the power distribution system controller is respectively connected to the first mains incoming line cabinet, the second mains incoming line cabinet, the first emergency power incoming line cabinet, the second emergency power incoming line cabinet and the bus cabinet;

[0006] The power generation system controller controls the start and stop state of the generator set according to the power failure and / or restoration state of the first mains power and / or the second mains power;

[0007] The power distribution system controller controls the opening and closing states of the first mains incoming cabinet, the second mains incoming cabinet, the first emergency incoming cabinet, the second emergency incoming cabinet, and the bus cabinet based on the power loss and power restoration status of the first mains power and / or the second mains power, so as to ensure the normal operation of the load equipment that draws power from the load bus.

[0008] Preferably, the generator set comprises a plurality of generators and a generator incoming line cabinet corresponding to each of the generators, the plurality of generators are connected in parallel with the parallel busbar through the corresponding generator incoming line cabinet, and each of the generators and the corresponding generator incoming line cabinet are respectively connected to the power generation system controller;

[0009] The power generation system controller controls the start / stop state of the generator and the opening / closing state of the corresponding generator incoming line cabinet according to the power failure / recovery state of the first mains power and / or the second mains power.

[0010] Preferably, it further comprises a first power generation outlet cabinet provided on the first backup line and a second power generation outlet cabinet provided on the second backup line, the output end of the first power generation outlet cabinet is connected to the input end of the first emergency incoming cabinet, the output end of the second power generation outlet cabinet is connected to the input end of the second emergency incoming cabinet, and the first power generation outlet cabinet and the second power generation outlet cabinet are also respectively connected to the power generation system controller;

[0011] The power generation system controller also controls the opening and closing states of the first power generation outlet cabinet and the second power generation outlet cabinet according to the power failure and power restoration states of the first mains power and / or the second mains power.

[0012] Preferably, it also includes a first electrical interlock and a second electrical interlock, the first electrical interlock is used to limit the first mains incoming line cabinet, the second mains incoming line cabinet, and only two of the busbar cabinets are in the closed state at the same time, and the second electrical interlock is used to limit the first emergency incoming line cabinet, the second emergency incoming line cabinet, and only two of the busbar cabinets are in the closed state at the same time.

[0013] Preferably, the busbar cabinet comprises a busbar circuit breaker, a third electrical interlock, and a first isolation trolley and a second isolation trolley provided at both ends of the busbar circuit breaker, and the busbar circuit breaker is connected to the power distribution system controller;

[0014] The third electrical interlock is used to limit the action conditions of the bus circuit breaker, the first isolation trolley and the second isolation trolley. The action conditions are that the bus circuit breaker can only perform the closing action when the first isolation trolley and the second isolation trolley are both in working state, and the first isolation trolley and the second isolation trolley can only perform the withdrawal action when the bus circuit breaker is in the opening state.

[0015] Furthermore, it also includes a plurality of incoming line isolation cabinets distributed on both sides of the bus cabinet, the load equipment is connected to the load bus through the corresponding incoming line isolation cabinets, and each incoming line isolation cabinet is connected to the power distribution system controller.

[0016] Further, the power distribution system controller includes a detection module and a control module;

[0017] When the detection module detects that the first mains power is lost, and the voltage of the first mains power and any of the incoming isolation cabinets are lower than the low voltage threshold, the control module controls the first mains incoming cabinet to open, and controls the bus circuit breaker to delay closing; or,

[0018] When the detection module detects that the second mains power is lost, and the voltage of the second mains power and any of the incoming isolation cabinets is lower than the low voltage threshold, the control module controls the second mains incoming cabinet to open, and controls the busbar circuit breaker to delay closing; or,

[0019] When the detection module detects that the first mains power is restored and the voltage of the first mains power is higher than the high voltage threshold, the control module controls the first mains power incoming cabinet to close and controls the busbar circuit breaker to delay opening; or,

[0020] When the detection module detects that the second mains power is restored and the voltage of the second mains power is higher than the high voltage threshold, the control module controls the second mains power incoming cabinet to close and controls the bus circuit breaker to delay opening.

[0021] Furthermore, when the detection module detects that the first mains power and the second mains power are simultaneously lost, and the voltages of the first mains power, the second mains power and any of the incoming line isolation cabinets are all lower than the low voltage threshold, the power generation system controller controls part or all of the generators of the generator set to start, controls the first generator outgoing line cabinet, the second generator outgoing line cabinet and the corresponding generator incoming line cabinet to close, and controls the first generator outgoing line cabinet and the second generator outgoing line cabinet to close, and controls the first mains incoming line cabinet, the second mains incoming line cabinet and the bus circuit breaker to open.

[0022] Further, when the detection module detects that the first mains power is restored and the voltage of the first mains power is higher than the high voltage threshold, the power generation system controller controls the started generator to stop, and at the same time controls the first generator outgoing line cabinet, the second generator outgoing line cabinet and the corresponding generator incoming line cabinet to open, and controls the first mains incoming line cabinet and the bus circuit breaker to close through the control module; or,

[0023] When the detection module detects that the second mains power is restored and the voltage of the second mains power is higher than the high voltage threshold, the power generation system controller controls the started generator to stop, and at the same time controls the first generator outgoing line cabinet, the second generator outgoing line cabinet and the corresponding generator incoming line cabinet to open, and controls the second mains incoming line cabinet and the busbar circuit breaker to close through the control module; or,

[0024] When the detection module detects that the first mains power and the second mains power are restored at the same time, and the voltages of the first mains power and the second mains power are both higher than the high voltage threshold, the started generator is controlled to shut down by the power generation system controller, and the first generator outgoing cabinet, the second generator outgoing cabinet and the corresponding generator incoming cabinet are controlled to open, and the first mains power incoming cabinet and the second mains power incoming cabinet are controlled to close by the control module.

[0025] Compared with the prior art, the power distribution system for a large data center provided by the present invention has the following beneficial effects:

[0026] The power distribution system for a large data center provided by the present invention is composed of a generator set, a first mains incoming line cabinet, a second mains incoming line cabinet, a parallel bus, a load bus, a first spare line, a second spare line, a power generation system controller and a distribution system controller, wherein the generator set is connected to the parallel bus, the load bus is connected to the parallel bus through the first spare line and the second spare line respectively, a bus cabinet for dividing the load bus into two sections is provided on the load bus, the first mains incoming line cabinet connects the first mains power to one section of the load bus, and the second mains incoming line cabinet connects the second mains power to the other section of the load bus, in addition, a first emergency incoming line cabinet is provided on the first spare line, and a second emergency incoming line cabinet is provided on the second spare line, the power generation system controller is respectively connected to the generator set and the distribution system controller, and the distribution system controller is respectively connected to the first mains incoming line cabinet, the second mains incoming line cabinet, the first emergency power incoming line cabinet, the second emergency power incoming line cabinet and the bus cabinet.

[0027] When a large data center is operating normally, the first and second mains supplies power the distribution system at the same time. At this time, the distribution system controller detects in real time whether the first and second mains have power failures. When it is detected that the first mains suddenly loses power, the distribution system controller automatically controls the first mains incoming cabinet to open, and controls the bus cabinet to delay closing, so that the load equipment that relies on the first mains can normally draw power from the second mains through the bus cabinet; when it is detected that the second mains suddenly loses power, the distribution system controller automatically controls the second mains incoming cabinet to open, and controls the bus cabinet to delay closing, so that the load equipment that relies on the first mains can normally draw power from the second mains through the bus cabinet. The load equipment that draws power can normally draw power from the first mains through the busbar cabinet; when it is detected that the first mains and the second mains are simultaneously powered off, the power generation system controller automatically controls part or all of the generators of the generator set to start, and at the same time controls the first generator outgoing cabinet, the second generator outgoing cabinet and the corresponding generator incoming cabinet to close, and controls the first emergency incoming cabinet and the second emergency incoming cabinet to close through the distribution system controller, and controls the first mains incoming cabinet, the second mains incoming cabinet and the busbar circuit breaker to open, so that the load equipment that relies on the first and second mains for power supply can draw power through the generator set, ensuring the normal operation of the load equipment.

[0028] It can be seen that the present invention not only provides a dual mains power supply protection solution, but also adds a generator set backup power supply solution on the basis of the dual mains power supply solution, thereby improving the stability of the power supply of the distribution system to the load equipment, and achieving the safe operation of the large data center through the generator set backup power supply in the extreme case of simultaneous power failure of both mains. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0030] Figure 1 The figure is a schematic diagram of the structure of a power distribution system for a large data center according to an embodiment of the present invention. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0032] See also Figure 1, this embodiment provides a power distribution system for a large data center, including a generator set, a first mains incoming line cabinet, a second mains incoming line cabinet, a parallel bus, a load bus, a first standby line, a second standby line, a power generation system controller and a distribution system controller, the generator set is connected to the parallel bus, one end of the first standby line and the second standby line are respectively connected to the parallel bus, the other ends of the first standby line and the second standby line are respectively connected to the load bus, a bus cabinet for dividing the load bus into two sections is provided on the load bus, the first mains incoming line cabinet connects the first mains power to one section of the load bus, the second mains incoming line cabinet connects the second mains power to the other section of the load bus, a first emergency incoming line cabinet is provided on the first standby line, a second emergency incoming line cabinet is provided on the second standby line, the power generation system controller is respectively connected to the generator set and the distribution system controller, and the distribution system controller is respectively connected to the first mains incoming line cabinet, the second mains incoming line cabinet, the first emergency power incoming line cabinet, the second emergency power incoming line cabinet and the bus cabinet;

[0033] The power generation system controller controls the start and stop state of the generator set according to the power failure and restoration state of the first mains power and / or the second mains power;

[0034] The power distribution system controller controls the opening and closing states of the first mains incoming cabinet, the second mains incoming cabinet, the first emergency incoming cabinet, the second emergency incoming cabinet, and the busbar cabinet based on the power loss and power restoration status of the first mains and / or the second mains to ensure the normal operation of the load equipment that draws power from the load bus.

[0035] The power distribution system for a large data center provided in this embodiment is composed of a generator set, a first mains incoming line cabinet 1DL, a second mains incoming line cabinet 2DL, a parallel bus, a load bus, a first standby line, a second standby line, a power generation system controller and a distribution system controller, wherein the generator set is connected to the parallel bus, the load bus is connected to the parallel bus through the first standby line and the second standby line respectively, a bus cabinet 5DL for dividing the load bus into two sections is provided on the load bus, the first mains incoming line cabinet connects the first mains power to one section of the load bus, and the second mains incoming line cabinet connects the second mains power to the other section of the load bus, in addition, a first emergency incoming line cabinet 3DL is provided on the first standby line, and a second emergency incoming line cabinet 4DL is provided on the second standby line, the power generation system controller is respectively connected to the generator set and the distribution system controller, and the distribution system controller is respectively connected to the first mains incoming line cabinet, the second mains incoming line cabinet, the first emergency power incoming line cabinet, the second emergency power incoming line cabinet and the bus cabinet.

[0036] When a large data center is operating normally, the first and second mains supplies power the distribution system at the same time. At this time, the distribution system controller detects in real time whether the first and second mains have power failures. When it is detected that the first mains suddenly loses power, the distribution system controller automatically controls the first mains incoming cabinet to open, and controls the bus cabinet to delay closing, so that the load equipment that relies on the first mains can normally draw power from the second mains through the bus cabinet; when it is detected that the second mains suddenly loses power, the distribution system controller automatically controls the second mains incoming cabinet to open, and controls the bus cabinet to delay closing, so that the load equipment that relies on the first mains can normally draw power from the second mains through the bus cabinet. The load equipment that draws power can normally draw power from the first mains through the busbar cabinet; when it is detected that the first mains and the second mains are simultaneously powered off, the power generation system controller automatically controls part or all of the generators of the generator set to start, and at the same time controls the first generator outgoing cabinet, the second generator outgoing cabinet and the corresponding generator incoming cabinet to close, and controls the first emergency incoming cabinet and the second emergency incoming cabinet to close through the distribution system controller, and controls the first mains incoming cabinet, the second mains incoming cabinet and the busbar circuit breaker to open, so that the load equipment that relies on the first and second mains for power supply can draw power through the generator set, ensuring the normal operation of the load equipment.

[0037] It can be seen that this embodiment not only provides a dual mains power supply protection solution, but also adds a generator set backup power supply solution on the basis of the dual mains power supply solution, thereby improving the stability of the distribution system's power supply to the load equipment, and achieving the extreme situation of simultaneous power failure of both mains power supplies, the safe operation of the large data center can be guaranteed by the generator set backup power supply.

[0038] The generator set in the above embodiment includes multiple generators and generator incoming line cabinets corresponding to each generator. The multiple generators are connected in parallel with the parallel bus through the corresponding generator incoming line cabinets, and each generator and the corresponding generator incoming line cabinet are respectively connected to the power generation system controller; the power generation system controller controls the start and stop status of the generator and the opening and closing status of the corresponding generator incoming line cabinet according to the power loss and restoration status of the first mains power and / or the second mains power. Figure 1 GR1-GR6 are generators, and AH05 to AH10 are the corresponding generator incoming line cabinets.

[0039] During specific implementation, the generator set can be set to a dual-power generator set including a diesel-generated power source G1 and a diesel-generated power source G2 according to actual power consumption conditions, or set to a single-power generator set including only a diesel-generated power source G1. Each of the above-mentioned power generator sets includes multiple generators and generator incoming line cabinets corresponding to each of the generators. This embodiment preferably adopts a dual-power generator set power supply scheme, which can form a combination mode in which one group of diesel-generated power sources is used for power supply and the other group of diesel-generated power sources is used for standby. When one of the diesel-generated power sources fails, it can be urgently switched to another group of diesel-generated power sources to continue powering, further improving the power distribution stability.

[0040] The above embodiment also includes a first power generation outlet cabinet arranged on the first standby line and a second power generation outlet cabinet arranged on the second standby line, the output end of the first power generation outlet cabinet is connected to the input end of the first emergency incoming cabinet, the output end of the second power generation outlet cabinet is connected to the input end of the second emergency incoming cabinet, and the first power generation outlet cabinet and the second power generation outlet cabinet are also connected to the power generation system controller respectively; the power generation system controller also controls the opening and closing states of the first power generation outlet cabinet and the second power generation outlet cabinet according to the power loss and restoration states of the first mains power and / or the second mains power.

[0041] In order to ensure the stable operation of the power distribution system, the interlocking relationship between the first mains incoming cabinet, the second mains incoming cabinet, the first emergency incoming cabinet, the second emergency incoming cabinet, and the busbar cabinet needs to be configured as follows:

[0042] The above embodiment also includes a first electrical interlock and a second electrical interlock. The first electrical interlock is used to limit only two of the first AC power incoming cabinet, the second AC power incoming cabinet, and the busbar cabinet to be in the closed state at the same time. The second electrical interlock is used to limit only two of the first emergency incoming cabinet, the second emergency incoming cabinet, and the busbar cabinet to be in the closed state at the same time.

[0043] The busbar cabinet in the above embodiment includes a busbar circuit breaker, a third electrical interlock, and a first isolation trolley and a second isolation trolley provided at both ends of the busbar circuit breaker, and the busbar circuit breaker is connected to the power distribution system controller;

[0044] The third electrical interlock is used to limit the action conditions of the bus circuit breaker, the first isolation trolley and the second isolation trolley. The action condition is that the bus circuit breaker can only perform the closing action when the first isolation trolley and the second isolation trolley are both in working state, and the first isolation trolley and the second isolation trolley can only perform the withdrawal action when the bus circuit breaker is in the opening state.

[0045] When the first mains incoming cabinet or the second mains incoming cabinet is in the closed state, the first emergency incoming cabinet and the second emergency incoming cabinet are intelligently in the open state; or, when the first emergency incoming cabinet and the second emergency incoming cabinet are intelligently in the closed state, the first mains incoming cabinet and the second mains incoming cabinet can only be in the open state.

[0046] For ease of understanding, the interlocking relationship between the above-mentioned power supply mode and the opening and closing state of the line cabinet is shown in the following table, "●" indicates that the corresponding line cabinet is in the closed state, and "empty" indicates that the corresponding line cabinet is in the open state:

[0047]

[0048] It can be seen from the above table that when the power distribution system is powered by two mains power sources, the first mains incoming line cabinet (1DL) and the second mains incoming line cabinet (2DL) need to be in the closed state at the same time, while the first emergency incoming line cabinet (3DL), the second emergency incoming line cabinet (4DL) and the busbar cabinet (5DL) need to be in the open state. The same applies to other power supply methods, which will not be described in detail in this embodiment.

[0049] The above embodiment also includes a plurality of incoming line isolation cabinets distributed on both sides of the busbar cabinet, the load devices are respectively connected to the load busbar through the corresponding incoming line isolation cabinets, and each incoming line isolation cabinet is respectively connected to the power distribution system controller. Figure 1 Feeder 1, feeder 2, feeder 3, feeder 4, feeder 5 and feeder 6 all represent incoming line isolation cabinets. Feeder 1, feeder 2 and feeder 3 are powered by the first mains through the left side of the load bus, and feeder 4, feeder 5 and feeder 6 are powered by the second mains through the left side of the load bus.

[0050] Specifically, the power distribution system controller in the above embodiment may be a REF542 PLUS busbar standby automatic transfer controller, which is divided into a detection module and a control module according to its function;

[0051] When the detection module detects that the first mains power is lost, and the voltage of the first mains power and any incoming isolation cabinet is lower than the low voltage threshold, the control module controls the first mains incoming cabinet to open, and controls the busbar circuit breaker to delay closing; or,

[0052] When the detection module detects that the second mains power is lost, and the voltage of the second mains power and any incoming isolation cabinet is lower than the low voltage threshold, the control module controls the second mains incoming cabinet to open, and controls the busbar circuit breaker to delay closing; or,

[0053] When the detection module detects that the first mains power is restored and the voltage of the first mains power is higher than the high voltage threshold, the control module controls the first mains power incoming cabinet to close and controls the busbar circuit breaker to delay opening; or,

[0054] When the detection module detects that the second mains power is restored and the voltage of the second mains power is higher than the high voltage threshold, the control module controls the second mains power incoming cabinet to close and controls the busbar circuit breaker to delay opening.

[0055] In specific implementation, the operating voltage of the load bus is 10kV, at which time the low voltage threshold can be set to 3kV (30% Ur), and the high voltage threshold can be set to 7kV (70% Ur). It should be noted that when the detection module detects that the first mains power and / or the second mains power are out of power, it is necessary to select any of the incoming isolation cabinets for secondary confirmation of voltage detection. When ensuring that the power is off, the control module controls the corresponding first mains power incoming cabinet and / or the second mains power incoming cabinet to open the switch to avoid electric shock. The time for the delayed closing of the bus circuit breaker can be set to 0.3 seconds, which can avoid the main incoming switch and the isolating switch from closing at the same time to cause the power loop to close.

[0056] In the above embodiment, when the detection module detects that the first mains and the second mains are simultaneously de-energized, and the voltages of the first mains, the second mains, and any incoming isolation cabinet are all lower than the low-voltage threshold, the power generation system controller controls some or all of the generators of the generator set to start, controls the first generator outgoing cabinet, the second generator outgoing cabinet, and the corresponding generator incoming cabinet to close, and controls the first generator outgoing cabinet and the second generator outgoing cabinet to close, and controls the first mains incoming cabinet, the second mains incoming cabinet, and the busbar circuit breaker to open, through the control module. The number of generators started is related to the number and power of the load devices. The larger the number and power of the load devices, the more generators are started.

[0057] In specific implementation, when the detection module detects that the first and second mains power lines are lost at the same time, the IMNT control panel of the power generation system controller (diesel generator parallel control system) will receive the generator set start signal from the control module, and the generator set will start and run within the preset delay time according to the start signal.

[0058] In addition, when the detection module detects that the first mains power is restored and the voltage of the first mains power is higher than the high-voltage threshold, the power generation system controller controls the started generator to stop, and at the same time controls the first generator outgoing line cabinet, the second generator outgoing line cabinet and the corresponding generator incoming line cabinet to be opened, and controls the first mains incoming line cabinet and the busbar circuit breaker to be closed, and controls the first emergency incoming line cabinet and the second emergency incoming line cabinet to be opened through the control module; or,

[0059] When the detection module detects that the second mains power is restored and the voltage of the second mains power is higher than the high voltage threshold, the power generation system controller controls the started generator to stop, and at the same time controls the first generator outgoing line cabinet, the second generator outgoing line cabinet and the corresponding generator incoming line cabinet to open, and controls the second mains incoming line cabinet and the busbar circuit breaker to close, and controls the first emergency incoming line cabinet and the second emergency incoming line cabinet to open; or,

[0060] When the detection module detects that the first mains power and the second mains power are restored at the same time, and the voltages of the first mains power and the second mains power are both higher than the high voltage threshold, the power generation system controller controls the started generator to shut down, and at the same time controls the first generator outgoing line cabinet, the second generator outgoing line cabinet and the corresponding generator incoming line cabinet to be opened, and controls the first mains incoming line cabinet and the second mains incoming line cabinet to be closed, and controls the first emergency incoming line cabinet and the second emergency incoming line cabinet to be opened.

[0061] A person skilled in the art can understand that all or part of the steps in the above-mentioned inventive method can be implemented by instructing related hardware through a program, and the above-mentioned program can be stored in a computer-readable storage medium. When the program is executed, it includes the steps of the above-mentioned embodiment method, and the storage medium can be: ROM / RAM, disk, optical disk, memory card, etc.

[0062] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A power distribution system for a large data center, characterized in that: The invention comprises a generator set, a first mains incoming line cabinet, a second mains incoming line cabinet, a parallel bus, a load bus, a first standby line, a second standby line, a power generation system controller, a power distribution system controller, a first electrical interlock and a second electrical interlock, wherein the generator set is connected to the parallel bus, one end of the first standby line and the second standby line are respectively connected to the parallel bus, the other ends of the first standby line and the second standby line are respectively connected to the load bus, a bus cabinet for dividing the load bus into two sections is provided on the load bus, the first mains incoming line cabinet connects a first mains power to one section of the load bus, the second mains incoming line cabinet connects a second mains power to the other section of the load bus, and the A first emergency incoming line cabinet and a first generating outgoing line cabinet are provided on the first standby line, a second emergency incoming line cabinet and a second generating outgoing line cabinet are provided on the second standby line, an output end of the first generating outgoing line cabinet is connected to an input end of the first emergency incoming line cabinet, an output end of the second generating outgoing line cabinet is connected to an input end of the second emergency incoming line cabinet, and the first generating outgoing line cabinet and the second generating outgoing line cabinet are also respectively connected to the generating system controller, the generating system controller is respectively connected to the generator set and the power distribution system controller, and the power distribution system controller is respectively connected to the first mains incoming line cabinet, the second mains incoming line cabinet, the first emergency power supply incoming line cabinet, the second emergency power supply incoming line cabinet and the busbar cabinet; The power generation system controller controls the start and stop state of the generator set according to the power failure and / or restoration state of the first mains power and / or the second mains power; The power generation system controller also controls the opening and closing states of the first power generation outlet cabinet and the second power generation outlet cabinet according to the power loss and restoration states of the first mains power and / or the second mains power; The power distribution system controller controls the opening and closing states of the first mains incoming cabinet, the second mains incoming cabinet, the first emergency incoming cabinet, the second emergency incoming cabinet, and the bus cabinet accordingly based on the power loss and restoration state of the first mains power and / or the second mains power, so as to ensure the normal operation of the load equipment powered by the load bus; The first electrical interlock is used to limit only two of the first mains incoming line cabinet, the second mains incoming line cabinet, and the busbar cabinet to be in the closed state at the same time, and the second electrical interlock is used to limit only two of the first emergency incoming line cabinet, the second emergency incoming line cabinet, and the busbar cabinet to be in the closed state at the same time; Wherein, the generator set comprises a plurality of generators and a generator incoming line cabinet corresponding to each of the generators, the plurality of generators are connected in parallel with the parallel busbar through the corresponding generator incoming line cabinet, and each of the generators and the corresponding generator incoming line cabinet are respectively connected to the power generation system controller; The power generation system controller controls the start / stop state of the generator and the opening / closing state of the corresponding generator incoming line cabinet according to the power failure / recovery state of the first mains power and / or the second mains power.

2. The power distribution system according to claim 1, characterized in that: The busbar cabinet includes a busbar circuit breaker, a third electrical interlock, and a first isolation trolley and a second isolation trolley provided at both ends of the busbar circuit breaker, and the busbar circuit breaker is connected to the power distribution system controller; The third electrical interlock is used to limit the action conditions of the bus circuit breaker, the first isolation trolley and the second isolation trolley. The action conditions are that the bus circuit breaker can only perform the closing action when the first isolation trolley and the second isolation trolley are both in working state, and the first isolation trolley and the second isolation trolley can only perform the withdrawal action when the bus circuit breaker is in the opening state.

3. The power distribution system according to claim 2, characterized in that: It also includes a plurality of incoming line isolation cabinets distributed on both sides of the bus cabinet, the load equipment is connected to the load bus through the corresponding incoming line isolation cabinets, and each incoming line isolation cabinet is connected to the power distribution system controller.

4. The power distribution system according to claim 3, characterized in that: The power distribution system controller includes a detection module and a control module; When the detection module detects that the first mains power is lost, and the voltage of the first mains power and any of the incoming isolation cabinets are lower than the low-voltage threshold, the control module controls the first mains incoming cabinet to open, and controls the delayed closing of the busbar circuit breaker; or, When the detection module detects that the second mains power is lost, and the voltage of the second mains power and any of the incoming isolation cabinets are lower than the low voltage threshold, the control module controls the second mains incoming cabinet to open, and controls the delayed closing of the busbar circuit breaker; or, When the detection module detects that the first mains power is restored and the voltage of the first mains power is higher than the high voltage threshold, the control module controls the first mains power incoming cabinet to close and controls the busbar circuit breaker to open with a time delay; or, When the detection module detects that the second mains power is restored and the voltage of the second mains power is higher than the high voltage threshold, the control module controls the second mains power incoming cabinet to close and controls the bus circuit breaker to delay opening.

5. The power distribution system according to claim 4, characterized in that: When the detection module detects that the first mains power and the second mains power are simultaneously lost, and the voltages of the first mains power, the second mains power and any of the incoming line isolation cabinets are lower than the low voltage threshold, the power generation system controller controls part or all of the generators of the generator set to start, controls the first generator outgoing line cabinet, the second generator outgoing line cabinet and the corresponding generator incoming line cabinet to close, and controls the first generator outgoing line cabinet and the second generator outgoing line cabinet to close, and controls the first mains incoming line cabinet, the second mains incoming line cabinet and the bus circuit breaker to open.

6. The power distribution system according to claim 5, characterized in that: When the detection module detects that the first mains power is restored and the voltage of the first mains power is higher than the high voltage threshold, the power generation system controller controls the started generator to stop, and at the same time controls the first power generation outgoing cabinet, the second power generation outgoing cabinet and the corresponding generator incoming cabinet to open, and controls the first mains incoming cabinet and the busbar circuit breaker to close through the control module; or, When the detection module detects that the second mains power is restored and the voltage of the second mains power is higher than the high voltage threshold, the power generation system controller controls the started generator to stop, and at the same time controls the first generator outgoing line cabinet, the second generator outgoing line cabinet and the corresponding generator incoming line cabinet to open, and controls the second mains incoming line cabinet and the busbar circuit breaker to close through the control module; or, When the detection module detects that the first mains power and the second mains power are restored at the same time, and the voltages of the first mains power and the second mains power are both higher than the high voltage threshold, the started generator is controlled to shut down by the power generation system controller, and the first generator outgoing cabinet, the second generator outgoing cabinet and the corresponding generator incoming cabinet are controlled to open, and the first mains power incoming cabinet and the second mains power incoming cabinet are controlled to close by the control module.

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