CN217159280U - Data center power distribution system - Google Patents
Data center power distribution system Download PDFInfo
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- CN217159280U CN217159280U CN202122070307.7U CN202122070307U CN217159280U CN 217159280 U CN217159280 U CN 217159280U CN 202122070307 U CN202122070307 U CN 202122070307U CN 217159280 U CN217159280 U CN 217159280U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
Abstract
The disclosure provides a data center power distribution system, and relates to the technical field of power supply or power distribution devices or systems. The data center power distribution system of the present disclosure includes: the commercial power supply equipment comprises at least one path of commercial power supply input; the primary medium-voltage distribution system is used for configuring each path of mains supply input into a plurality of paths of power supply outputs, and at least one path of power supply in the plurality of paths of power supply outputs is output to the secondary medium-voltage distribution system; the secondary medium voltage distribution system comprises at least one secondary medium voltage distribution unit, and the secondary medium voltage distribution unit is connected to the power output of the primary medium voltage distribution system and the power output of a group of diesel generating sets; the low-voltage distribution system is connected into the secondary medium-voltage distribution system, the power output of the secondary medium-voltage distribution unit supplies power to load equipment of a data center, the control logic in the system is simple, the system is easy to maintain, and the risk of single-point faults is avoided.
Description
Technical Field
The present disclosure relates to the field of power supply or distribution devices or systems, and more particularly to data center power distribution systems.
Background
The existing data center power distribution system adopts a 2N power distribution + centralized diesel engine parallel machine structure. Wherein, power supply includes 2 way commercial power supplies and 2 way diesel generator power supplies. Wherein, 2 way commercial power supplies come from different higher level power, 2 way diesel generator power supplies come from the parallel machine system of one section firewood. The diesel engine parallel operation system consists of a plurality of groups of diesel generator sets and an engine parallel cabinet.
In the power distribution system, the diesel engine parallel machine system has a complex structure and complex control logic and is difficult to maintain; and the single-point fault risk exists in the diesel engine parallel machine system and the parallel machine bus.
SUMMERY OF THE UTILITY MODEL
The present disclosure provides a data center power distribution system, comprising:
the commercial power supply equipment comprises at least one path of commercial power supply input;
the primary medium-voltage distribution system is used for configuring each path of mains supply input into a plurality of paths of power supply outputs, and at least one path of power supply in the plurality of paths of power supply outputs is output to the secondary medium-voltage distribution system;
the secondary medium voltage distribution system comprises at least one secondary medium voltage distribution unit, and the secondary medium voltage distribution unit is connected to the power output of the primary medium voltage distribution system and the power output of a group of diesel generating sets;
and the low-voltage distribution system is connected to the power output of the secondary medium-voltage distribution unit in the secondary medium-voltage distribution system and supplies power to load equipment of the data center.
The data center power distribution system according to the embodiment of the present disclosure may further have the following additional technical features:
in an embodiment of the present disclosure, the primary medium voltage power distribution system comprises at least one primary medium voltage power distribution unit;
the quantity of one-level medium voltage distribution unit with the way number of mains supply input is the same, just one-level medium voltage distribution unit with mains supply input one-to-one for with the mains supply input of one way of correspondence configure into multichannel power output.
In an embodiment of the present disclosure, the primary medium voltage distribution unit comprises a plurality of primary medium voltage distribution cabinets;
be provided with the circuit breaker in the one-level medium voltage distribution cabinet, through circuit breaker and generating line with other one-level medium voltage distribution cabinets in the one-level medium voltage distribution unit are connected, the circuit breaker can switch on or break off.
In the embodiment of the present disclosure, the second-stage medium voltage distribution units are respectively connected to power outputs of the first-stage medium voltage distribution units in the first-stage medium voltage distribution system.
In an embodiment of the present disclosure, the secondary medium voltage power distribution unit comprises a plurality of secondary medium voltage power distribution cabinets;
be provided with the circuit breaker in the second grade medium voltage distribution cabinet, through circuit breaker and generating line with other second grade medium voltage distribution cabinets in the second grade medium voltage distribution unit are connected, the circuit breaker can switch on or break off.
In an embodiment of the present disclosure, the low voltage power distribution system comprises at least one low voltage power distribution unit;
the number of the low-voltage distribution units is the same as that of the secondary medium-voltage distribution units in the secondary medium-voltage distribution system, and the low-voltage distribution units correspond to the secondary medium-voltage distribution units one to one;
and the low-voltage power distribution unit is connected to the power output of the corresponding second-stage medium-voltage power distribution unit.
In the embodiment of the present disclosure, the low-voltage power distribution unit is connected to the corresponding secondary medium-voltage power distribution unit through a transformer.
In an embodiment of the present disclosure, the low voltage distribution unit includes a plurality of low voltage distribution cabinets;
the low-voltage power distribution cabinet is provided with a circuit breaker, and the circuit breaker and a bus are connected with other low-voltage power distribution cabinets in the low-voltage power distribution unit and can be switched on or off.
In an embodiment of the present disclosure, the secondary medium voltage power distribution system further comprises a secondary standby medium voltage power distribution unit;
the secondary standby medium-voltage distribution unit is connected to the power output of the primary medium-voltage distribution system and the power output of a group of diesel generating sets;
and at least one low-voltage distribution unit in the low-voltage distribution system is respectively connected to the power output of the secondary standby medium-voltage distribution unit.
In an embodiment of the present disclosure, the data center power distribution system further includes: and the PLC is used for controlling the circuit breaker in the data center power distribution system by combining the voltage and/or the current of each acquisition point in the data center power distribution system.
According to the data center power distribution system provided by the disclosure, each secondary medium voltage power distribution unit in the secondary medium voltage power distribution system is connected to the power output of the primary medium voltage power distribution system and the power output of a group of diesel generating sets; the low-voltage distribution system is connected to the power output of a secondary medium-voltage distribution unit in the secondary medium-voltage distribution system and supplies power to load equipment of the data center; therefore, by arranging the two-stage medium-voltage distribution system and connecting each two-stage medium-voltage distribution unit with the power output of a single group of diesel generating sets, the control logic of the data center distribution system is simple, the maintenance is easy, and the risk of single-point faults is avoided.
It should be understood that the statements in this section do not necessarily identify key or critical features of the embodiments of the present disclosure, nor do they limit the scope of the present disclosure. Other features of the present disclosure will become apparent from the following description.
Drawings
The drawings are included to provide a better understanding of the present solution and are not to be construed as limiting the present disclosure. Wherein:
FIG. 1 is a schematic diagram of a data center power distribution system according to the related art;
FIG. 2 is a schematic block diagram of a data center power distribution system provided in accordance with the present disclosure;
fig. 3 is a schematic structural diagram of another data center power distribution system according to an embodiment of the present disclosure.
Detailed Description
Exemplary embodiments of the present disclosure are described below with reference to the accompanying drawings, in which various details of the embodiments of the disclosure are included to assist understanding, and which are to be considered as merely exemplary. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the present disclosure. Also, descriptions of well-known functions and constructions are omitted in the following description for clarity and conciseness.
In the related art, a data center power distribution system adopts a 2N power distribution + centralized diesel engine parallel machine structure. Wherein, power supply includes 2 way commercial power supplies and 2 way diesel generator power supplies. Wherein, 2 way commercial power supplies come from different higher level power, 2 way diesel generator power supplies come from the parallel machine system of one section firewood. The diesel engine parallel operation system consists of a plurality of groups of diesel generator sets and an engine parallel cabinet. Fig. 1 is a schematic structural diagram of a power distribution system of a data center in the related art. In fig. 1, a data center power distribution system 100 includes a diesel generator set 101, a utility power source 102, an oil engine cabinet 103, a high voltage power distribution cabinet 104, a low voltage power distribution cabinet 105, and a load 106.
In fig. 1, the number of diesel multi-motor groups 101 is n, and is G1 to Gn. The commercial power supply 102 has two paths, which are respectively an a path 10kV commercial power and a B path 10kV commercial power. The high voltage distribution cabinets 104 are two, namely an A-way high voltage distribution cabinet and a B-way high voltage distribution cabinet. The low-voltage power distribution cabinets 105 are two, namely an A1-path low-voltage power distribution cabinet and a B1-path low-voltage power distribution cabinet. The load 106 is, for example, an Uninterruptible Power Supply (UPS) and an air conditioner. Wherein, 1 path of the power supply of the diesel generator output by the 1 path of the commercial power supply and the oil engine parallel machine cabinet is output to the A path of the high-voltage power distribution cabinet; and the other 1 path of the power supply of the diesel generator output by the other 1 path of the commercial power supply and the oil engine parallel machine cabinet is output to the B path of the high-voltage power distribution cabinet.
The UPS is an important external device capable of providing continuous, stable and uninterrupted power supply, and can effectively purify the commercial power when the commercial power is abnormal.
In the data center power distribution system, the diesel engine parallel machine system is complex in structure, complex in control logic and difficult to maintain; and the single-point fault risk exists in the diesel engine parallel machine system and the parallel machine bus.
In view of the above, the present disclosure provides a data center power distribution system.
Fig. 2 is a schematic structural diagram of a data center power distribution system provided in accordance with the present disclosure. As shown in fig. 2, the data center power distribution system 200 includes: a commercial power supply device 201, including at least one path of commercial power supply input; the first-stage medium-voltage distribution system 202 is used for configuring each path of mains supply input into a plurality of paths of power supply outputs, and at least one path of power supply in the plurality of paths of power supply outputs is output to the second-stage medium-voltage distribution system 203; the secondary medium voltage distribution system 203 comprises at least one secondary medium voltage distribution unit 204, and the secondary medium voltage distribution unit 204 is connected to the power output of the primary medium voltage distribution system 202 and the power output of a group of diesel generator sets 206; and the low-voltage distribution system 205 is connected to the power output of the secondary medium-voltage distribution unit 204 in the secondary medium-voltage distribution system 203 and supplies power to load equipment of the data center.
In the embodiment of the present disclosure, at least one of the commercial power sources may be from different upper-level power sources. The number of the paths of the commercial power supply can be set according to actual needs. For example, the mains supply may have 2 mains supplies, namely a 10kV mains supply and B10 kV mains supply, the 10kV mains supply in the a mains supply originating from one power plant and the 10kV mains supply in the B mains supply originating from another power plant.
In the embodiment of the present disclosure, the primary medium voltage distribution system 202 includes at least one primary medium voltage distribution unit, the number of the primary medium voltage distribution units is the same as the number of the input lines of the commercial power supplies, and the primary medium voltage distribution units are in one-to-one correspondence with the input lines of the commercial power supplies, and are configured to configure one input line of the commercial power supplies corresponding to multiple output lines of the commercial power supplies.
Wherein, one-level medium voltage distribution unit and mains supply input one-to-one, then when certain one-level medium voltage distribution unit's output goes wrong, can confirm the fault point through detecting this one-level medium voltage distribution unit and the mains supply who corresponds and maintain, reduce and maintain the degree of difficulty. If one-level medium voltage distribution unit does not have a one-to-one correspondence with the mains supply input, for example, one-level medium voltage distribution unit corresponds to a plurality of mains supplies, then when the output of this one-level medium voltage distribution unit goes wrong, need detect a plurality of mains supplies and this one-level medium voltage distribution unit, and then confirm the fault point and maintain, the object that needs to detect is too many, and the dimension degree of difficulty is big.
In one example, the primary medium voltage distribution unit may comprise a plurality of primary medium voltage distribution cabinets, with circuit breakers arranged in the primary medium voltage distribution cabinets, which are connected to other primary medium voltage distribution cabinets in the primary medium voltage distribution unit via circuit breakers and busbars, the circuit breakers being switchable on or off.
Wherein, when a one-level medium voltage distribution cabinet trouble, can carry out the disconnection processing to this one-level medium voltage distribution cabinet's circuit breaker, select other one-level medium voltage distribution cabinets to carry out the circuit breaker and switch on the processing, ensure the function of one-level medium voltage distribution unit. And each one-level medium voltage power distribution cabinet is connected with the bus through the circuit breaker respectively, and the normal operation of other one-level medium voltage power distribution cabinets is not influenced by the fault of one-level medium voltage power distribution cabinet.
The circuit breaker is a switching device capable of closing, carrying, and opening/closing a current under a normal circuit condition and closing, carrying, and opening/closing a current under an abnormal circuit condition for a predetermined time. The circuit breaker is divided into a high-voltage circuit breaker and a low-voltage circuit breaker according to the application range, and generally, a circuit breaker with a voltage of 3kV or more is called a high-voltage apparatus. The circuit breaker can be used for distributing electric energy, starting an asynchronous motor infrequently, protecting a power supply circuit and the motor and the like, and automatically cutting off the circuit when the power supply circuit and the motor have serious overload or faults such as short circuit, undervoltage and the like.
In an embodiment of the present disclosure, the two-stage medium voltage distribution system 203 may include at least one two-stage medium voltage distribution unit 204, each two-stage medium voltage distribution unit 204 interfacing with a power output of the one-stage medium voltage distribution system 202 and a power output of the set of diesel gensets 206. Wherein, be provided with the circuit breaker on the circuit between the power output of second grade medium voltage distribution unit 204 and one-level medium voltage distribution system 202, be provided with the circuit breaker on the circuit between the power output of second grade medium voltage distribution unit 204 and a set of diesel generating set 206, when the mains supply trouble of the same kind, can control the circuit breaker disconnection on this way mains supply circuit, the circuit breaker on another way mains supply circuit switches on. When two mains supplies are in fault, the circuit breakers on the two mains supply circuits can be controlled to be disconnected, and the circuit breakers on the circuit of the power output of the diesel generating set are switched on.
In one example, the secondary medium voltage distribution unit 204 may comprise a plurality of secondary medium voltage distribution cabinets, in which circuit breakers are arranged, which can be switched on or off by being connected with other secondary medium voltage distribution cabinets in the secondary medium voltage distribution unit via circuit breakers and busbars.
Wherein, when a second grade medium voltage distribution cabinet trouble, can carry out disconnection processing to this second grade medium voltage distribution cabinet's circuit breaker, select other second grade medium voltage distribution cabinets to carry out the circuit breaker and switch on the processing, ensure the function of second grade medium voltage distribution unit. And each secondary medium voltage power distribution cabinet is connected with the bus through a breaker respectively, and the normal operation of other secondary medium voltage power distribution cabinets is not influenced by the fault of one secondary medium voltage power distribution cabinet.
In the embodiment of the present disclosure, the secondary medium voltage distribution system 203 further includes a secondary standby medium voltage distribution unit, the secondary standby medium voltage distribution unit is connected to the power output of the primary medium voltage distribution system 202 and the power output 206 of the group of diesel generator sets, and at least one low voltage distribution unit in the low voltage distribution system 205 is connected to the power output of the secondary standby medium voltage distribution unit.
It should be noted that, when a certain secondary medium voltage distribution unit fails, the circuit breaker in the circuit between the low voltage distribution unit corresponding to the secondary medium voltage distribution unit and the secondary medium voltage distribution unit may be disconnected, and the circuit breaker in the circuit between the low voltage distribution unit and the secondary standby medium voltage distribution unit may be turned on, so as to ensure that the load of the low voltage distribution unit can normally operate.
In the embodiment of the present disclosure, the low voltage distribution system 205 includes at least one low voltage distribution unit, the number of the low voltage distribution units is the same as the number of the second-stage medium voltage distribution units 204 in the second-stage medium voltage distribution system 203, and the low voltage distribution units and the second-stage medium voltage distribution units 204 are in one-to-one correspondence. And the low-voltage distribution unit is connected to the power output of the corresponding second-stage medium-voltage distribution unit 204.
Wherein, low voltage distribution unit and second grade middling pressure distribution unit 204 one-to-one, then when certain low voltage distribution unit's output goes wrong, can confirm the fault point and maintain through detecting this low voltage distribution unit, the second grade middling pressure distribution unit 204 that this low voltage distribution unit corresponds, the one-level middling pressure distribution unit that this second grade middling pressure distribution unit corresponds, the mains supply that this one-level middling pressure distribution unit corresponds, reduce and maintain the degree of difficulty. If the low-voltage distribution unit does not have a one-to-one correspondence with the second-level medium-voltage distribution unit 204, for example, one low-voltage distribution unit corresponds to a plurality of second-level medium-voltage distribution units 204, when the output of the low-voltage distribution unit goes wrong, a plurality of second-level medium-voltage distribution units 204, a plurality of first-level medium-voltage distribution units and a plurality of mains power supplies need to be checked, and then the fault point is determined to be maintained, and the objects to be detected are too many, and the maintenance difficulty is large.
In the embodiment of the present disclosure, the low voltage distribution unit may be connected to the corresponding secondary medium voltage distribution unit 204 through a transformer. Based on the one-to-one correspondence between the low voltage distribution units and the secondary medium voltage distribution units 204, the power of the transformer between the low voltage distribution units and the secondary medium voltage distribution units 204 is basically fixed, and the situation that the power of the transformer is greatly changed due to the fault of a certain low voltage distribution unit cannot exist, so that the power of the transformer can be designed to be the power within the preset power range in order to improve the utilization rate of the transformer and reduce the loss of the transformer. When the power of the transformer is within the preset power range, the transformer loss is small.
In one example, the low-voltage distribution unit may include a plurality of low-voltage distribution cabinets, and a circuit breaker is disposed in the low-voltage distribution cabinet, and the circuit breaker may be turned on or off by being connected to other low-voltage distribution cabinets in the low-voltage distribution unit through the circuit breaker and the bus bar.
Wherein, when a low-voltage distribution cabinet broke down, can carry out disconnection processing to this low-voltage distribution cabinet's circuit breaker, select other low-voltage distribution cabinets to carry out the circuit breaker and switch on the processing, ensure low-voltage distribution unit's function. And each low-voltage power distribution cabinet is connected with the bus through a breaker respectively, the normal operation of other low-voltage power distribution cabinets is not influenced by the fault of one low-voltage power distribution cabinet, the breakers in the low-voltage power distribution cabinet are disconnected, and the breakers in other low-voltage power distribution cabinets are closed.
In an embodiment of the present disclosure, the data center power distribution system further includes: and the PLC is used for controlling the circuit breaker in the data center power distribution system by combining the voltage and/or the current of each acquisition point in the data center power distribution system.
In the embodiment of the disclosure, in the data center power distribution system, by setting two-stage medium voltage power distribution systems and connecting each two-stage medium voltage power distribution unit to the power output of a single group of diesel generating sets, the control logic of the data center power distribution system is simple, the maintenance is easy, and the risk of single-point faults is avoided.
For example, fig. 3 is a schematic structural diagram of another data center power distribution system according to an embodiment of the present disclosure, and as shown in fig. 3, a data center power distribution system 300 includes two mains power sources 301, two primary medium voltage power distribution units 302, six secondary medium voltage power distribution units 303, one secondary standby medium voltage power distribution unit 306, and six low voltage power distribution units 304; wherein, each secondary medium voltage distribution unit 303 is separately connected with a group of diesel generating sets 305; the secondary medium voltage distribution units 303 correspond to the low voltage distribution units 304 one to one, and are connected by transformers 307.
Wherein, the secondary standby medium voltage distribution unit 303 is connected to the power output of the primary medium voltage distribution system and the power output of the group of diesel generator sets 305; at least one low voltage power distribution unit 304 in the low voltage power distribution system is separately switched in to the power output of a secondary backup medium voltage power distribution unit 306.
It should be noted that, when a certain secondary medium voltage distribution unit fails, the circuit breaker in the circuit between the low voltage distribution unit corresponding to the secondary medium voltage distribution unit and the secondary medium voltage distribution unit may be disconnected, and the circuit breaker in the circuit between the low voltage distribution unit and the secondary standby medium voltage distribution unit may be turned on, so as to ensure that the load of the low voltage distribution unit can normally operate.
In an embodiment of the present disclosure, the data center power distribution system may further include: and the programmable logic controller PLC is used for controlling the circuit breaker in the data center power distribution system by combining the voltage and/or the current of each acquisition point in the data center power distribution system.
In the embodiment of the application, two stages of medium voltage distribution systems are arranged, namely a first-stage medium voltage distribution system and a second-stage medium voltage distribution system, wherein the first-stage medium voltage distribution system comprises a plurality of first-stage medium voltage distribution units; a two-stage medium voltage distribution system comprises a plurality of two-stage medium voltage distribution units. Through the arrangement of the two-stage medium-voltage distribution system, the control logic between the medium-voltage distribution system and the power supply is simple and easy to maintain. The quantity of low pressure distribution unit is the same with second grade middling pressure distribution unit's quantity, and low pressure distribution unit and second grade middling pressure distribution unit one-to-one, make control logic between low pressure distribution system and the second grade middling pressure distribution system simple, easy to maintain, and the setting of connecting through a transformer between a second grade middling pressure distribution unit and a low pressure distribution unit, make the power of transformer can not take place great fluctuation because of partial low pressure second grade middling pressure distribution unit's trouble, make the power of transformer relatively more stable, can stabilize in predetermineeing the power range, thereby reduce the transformer loss.
In the technical scheme of the disclosure, the collection, storage, use, processing, transmission, provision, disclosure and other processing of the personal information of the related user are all carried out on the premise of obtaining the consent of the user, and all accord with the regulation of related laws and regulations without violating the good custom of the public order.
The above detailed description should not be construed as limiting the scope of the disclosure. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may be made in accordance with design requirements and other factors. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present disclosure should be included in the scope of protection of the present disclosure.
Claims (8)
1. A data center power distribution system comprising:
the commercial power supply equipment comprises at least one path of commercial power supply input;
the primary medium-voltage distribution system is used for configuring each path of mains supply input into a plurality of paths of power supply outputs, and at least one path of power supply in the plurality of paths of power supply outputs is output to the secondary medium-voltage distribution system;
the secondary medium voltage distribution system comprises at least one secondary medium voltage distribution unit, and the secondary medium voltage distribution unit is connected to the power output of the primary medium voltage distribution system and the power output of a group of diesel generating sets;
the low-voltage distribution system is connected to the power output of the secondary medium-voltage distribution unit in the secondary medium-voltage distribution system and supplies power to load equipment of a data center;
wherein the secondary medium voltage distribution system further comprises a secondary standby medium voltage distribution unit;
the secondary standby medium-voltage distribution unit is connected to the power output of the primary medium-voltage distribution system and the power output of a group of diesel generating sets;
at least one low-voltage distribution unit in the low-voltage distribution system is respectively connected to the power output of the secondary standby medium-voltage distribution unit;
wherein the secondary medium voltage distribution unit comprises a plurality of secondary medium voltage distribution cabinets;
be provided with the circuit breaker in the second grade medium voltage distribution cabinet, through circuit breaker and generating line with other second grade medium voltage distribution cabinets in the second grade medium voltage distribution unit are connected, the circuit breaker can switch on or break off.
2. The data center power distribution system of claim 1, wherein the primary medium voltage power distribution system comprises at least one primary medium voltage power distribution unit;
the quantity of one-level medium voltage distribution unit with the way number of mains supply input is the same, just one-level medium voltage distribution unit with mains supply input one-to-one for with the mains supply input of one way of correspondence configure into multichannel power output.
3. The data center power distribution system of claim 2, wherein the primary medium voltage power distribution unit comprises a plurality of primary medium voltage power distribution cabinets;
be provided with the circuit breaker in the one-level medium voltage distribution cabinet, through circuit breaker and generating line with other one-level medium voltage distribution cabinets in the one-level medium voltage distribution unit are connected, the circuit breaker can switch on or break off.
4. The data center power distribution system of claim 1, wherein the secondary medium voltage power distribution units each tap into a power output of a respective one of the primary medium voltage power distribution systems.
5. The data center power distribution system of claim 1, wherein the low voltage power distribution system comprises at least one low voltage power distribution unit;
the number of the low-voltage distribution units is the same as that of the secondary medium-voltage distribution units in the secondary medium-voltage distribution system, and the low-voltage distribution units correspond to the secondary medium-voltage distribution units one to one;
and the low-voltage power distribution unit is connected to the power output of the corresponding second-stage medium-voltage power distribution unit.
6. The data center power distribution system of claim 5, wherein the low voltage power distribution units are coupled to the corresponding secondary medium voltage power distribution units via transformers.
7. The data center power distribution system of claim 5, wherein the low voltage power distribution unit comprises a plurality of low voltage power distribution cabinets;
the low-voltage power distribution cabinet is provided with a circuit breaker, and the circuit breaker and a bus are connected with other low-voltage power distribution cabinets in the low-voltage power distribution unit and can be switched on or off.
8. The data center power distribution system of claim 1, wherein the data center power distribution system further comprises: and the PLC is used for controlling the circuit breaker in the data center power distribution system by combining the voltage and/or the current of each acquisition point in the data center power distribution system.
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