CN222423301U - Energy storage system and data center - Google Patents
Energy storage system and data center Download PDFInfo
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- CN222423301U CN222423301U CN202420023609.XU CN202420023609U CN222423301U CN 222423301 U CN222423301 U CN 222423301U CN 202420023609 U CN202420023609 U CN 202420023609U CN 222423301 U CN222423301 U CN 222423301U
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Abstract
The application provides an energy storage system and a data center, wherein the energy storage system is applied to the data center and comprises a first cable, a charging and discharging circuit, a battery system, a charging and discharging controller and a charging and discharging controller, wherein the input end of the first cable is used for being connected with a main power supply, the output end of the first cable is used for being connected with a high-voltage bus, the charging and discharging circuit is connected with the first cable, the battery system is connected with the charging and discharging circuit, the charging and discharging circuit is used for charging and discharging the battery system, and the charging and discharging controller is connected with the charging and discharging circuit and used for controlling the charging and discharging circuit. According to the scheme, a diesel power generation emergency power supply can be omitted, the power distribution architecture of an energy storage system and a data center is simplified, and the control complexity is reduced.
Description
Technical Field
The application relates to the technical field of data centers, in particular to an energy storage system and a data center.
Background
The data center is used as a high-capacity power load, can be used as a virtual power plant to participate in power supply balance of a power grid after being configured with an energy storage system, and can be used for peak clipping and valley filling in combination with a time-of-use electricity price policy, so that economic benefit value is brought.
Fig. 1 is a typical power distribution architecture of an existing data center application energy storage system. Through reforming transform the reserve battery of terminal UPS (Uninterruptible Power Supply, uninterrupted energy source), increase reserve battery's capacity makes IT have both energy storage and reserve dual function, can carry out peak clipping through energy storage mode when energy storage reserve battery system normal operating and fill out the valley (store up the electricity when the valley is electric, discharge when the peak is electric) balanced electric wire netting load, when terminal trouble appears, energy storage reserve battery system can be used as stand-by power supply to carry out short-time emergency power supply to IT load, when the main power supply of input appears unusual, switch over to stand-by diesel generator through ATS (automatic transfer switch), let stand-by diesel generator as stand-by power supply carry out long-time emergency power supply for whole system. However, since the partial load is not powered by UPS, in theory, the energy storage backup battery system cannot replace the backup diesel generator.
In the above power distribution architecture, although the energy storage standby battery system combines the functions of the energy storage and the standby battery, a plurality of energy storage standby battery systems are required to be distributed, and the distributed architecture is complex in system control, and particularly the unified regulation and control difficulty is high in peak clipping and valley filling operation.
Disclosure of utility model
The embodiment of the application provides an energy storage system which is used for simplifying the system structure and reducing the complexity.
The embodiment of the application provides an energy storage system, which is applied to a data center and comprises:
The input end of the first cable is used for being connected with a main power supply, and the output end of the first cable is used for being connected with a high-voltage bus;
A charge-discharge circuit connected to the first cable;
the charging and discharging circuit is used for charging and discharging the battery system;
And the charge-discharge controller is connected with the charge-discharge circuit and used for controlling the charge-discharge circuit.
In one embodiment, the charge and discharge circuit includes:
the second transformer is connected with the first cable and has the functions of boosting and dropping;
And the bidirectional converter is connected with the second transformer, the battery system and the charge-discharge controller, and the charge-discharge controller is used for controlling the bidirectional converter.
In an embodiment, the charge-discharge circuit further includes:
the first transformer is connected with the first cable and used for reducing voltage;
The AC/DC converter is connected with the first transformer and the battery system and is used for converting alternating current into direct current and charging the battery system.
In one embodiment, the charge-discharge circuit further comprises a switch tube connected with the first cable and used for controlling the connection and disconnection of the first cable.
In one embodiment, the charge-discharge circuit further comprises an emergency bypass connected in parallel with the switching tube and used as an emergency circuit when the switching tube fails.
In an embodiment, the emergency bypass comprises a first circuit breaker connected in parallel to both ends of the switching tube.
In one embodiment, the energy storage system further comprises a second circuit breaker, and the input end of the first cable is connected with a main power supply through the second circuit breaker.
In one embodiment, the energy storage system further comprises a third circuit breaker, and the output end of the first cable is connected with the high-voltage bus through the third circuit breaker.
The embodiment of the application provides a data center, which comprises an energy storage system, a high-voltage bus and a plurality of load modules, wherein the energy storage system is described in the embodiment, the high-voltage bus is connected with the output end of a first cable of the energy storage system, and the load modules are connected with the high-voltage bus.
In one embodiment, each load module comprises a third transformer connected to the high voltage bus, a low voltage bus connected to the third transformer, an IT load and a refrigeration device connected to the low voltage bus.
According to the technical scheme provided by the embodiment of the application, the battery system integrates the energy storage battery and the standby battery, adopts a centralized design, and compared with the method that the energy storage standby battery is distributed at the tail end of a load and is connected with the diesel generator at a high-voltage bus, the diesel generation emergency power supply can be omitted, the power distribution framework of the energy storage system and the data center is simplified, and the control complexity is reduced.
Drawings
In order to more clearly illustrate the technical solution of the embodiments of the present application, the drawings that are required to be used in the embodiments of the present application will be briefly described below.
FIG. 1 is a schematic diagram of a typical power distribution architecture of an existing data center application energy storage system;
FIG. 2 is a schematic diagram of a power distribution architecture of a data center application energy storage system of the related art;
FIG. 3 is a schematic diagram of an energy storage system according to an embodiment of the present application;
FIG. 4 is a schematic diagram of an energy storage system according to another embodiment of the present application;
Fig. 5 is a schematic diagram of a power distribution architecture of a data center according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application.
Like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures. Meanwhile, in the description of the present application, the terms "first", "second", and the like are used only to distinguish the description, and are not to be construed as indicating or implying relative importance.
Fig. 2 is a power distribution architecture of a related art data center application energy storage system. According to the scheme, the distributed architecture of the tail end UPS standby battery system is kept unchanged, the energy storage battery system is only connected to the high-voltage bus in a centralized mode, peak clipping and valley filling are carried out through the energy storage battery system to balance the power grid load during normal operation, the whole architecture does not change the tail end standby battery system and the diesel generator, and therefore the energy storage battery system does not bear emergency standby power. Because the energy storage battery system and the standby battery system are completely separated and deployed as two independent systems, the cost is relatively high, the energy storage battery system circulates daily, the standby battery system is always in a standby state, the service life of the energy storage battery is fast attenuated, and the standby battery is always in an inactive state, so that the waste of capacity and the acceleration of attenuation are caused. Compared with the architecture shown in fig. 2, the architecture shown in fig. 1 combines the energy storage battery system and the standby battery system together, and although the utilization rate of the battery is improved, the distributed architecture is complex, and the unified regulation and control difficulty is high in peak clipping and valley filling operation.
Fig. 3 is a schematic diagram of an architecture of an energy storage system 10 according to an embodiment of the present application. The energy storage system 10 may be applied to a data center, as shown in fig. 3, the energy storage system 10 includes a first cable 11, a charge and discharge circuit 12, a battery system 13, and a charge and discharge controller 14.
The input end of the first cable 11 is used for being connected with a main power supply, and the output end of the first cable 11 is used for being connected with a high-voltage bus. The main power supply is an input power supply and can be 220V alternating current power supply. In an embodiment, the input end of the first cable 11 may be connected to the mains power supply via a second circuit breaker. In an embodiment, the output end of the first cable 11 is connected to the high-voltage bus through the third circuit breaker, so that damage to the circuit due to overcurrent or short circuit is doubly ensured. For distinction, the circuit breaker connected to the input of the first cable 11 is referred to as a second circuit breaker, and the circuit breaker connected to the output of the first cable 11 is referred to as a third circuit breaker.
It should be noted that, in the embodiment of the present application, the high-voltage bus and the low-voltage bus represent the relative high and low voltages of the voltages, and do not represent specific voltage values. The high voltage bus transmits a voltage higher than the low voltage bus, which is used to transmit low voltage electrical energy and distribute it to the various load terminals.
The charge-discharge circuit 12 is connected to the first cable 11, and the charge-discharge circuit 12 is configured to charge and discharge the battery system 13. For example, according to the time of peak-valley electricity, discharge is performed during peak electricity, and charge is performed during valley electricity, thereby reasonably utilizing electric energy. For example, the power supply can be discharged when the main power supply is disconnected, so that the emergency power supply function for replacing the standby battery system and the diesel generator is realized.
The battery system 13 is connected with the charge-discharge circuit 12, and the battery system 13 integrates the functions of energy storage and emergency power backup. The charge/discharge controller 14 is connected to the charge/discharge circuit 12 and is used for controlling the charge/discharge circuit 12. For example, the charge/discharge controller 14 may include a timer that controls the discharge circuit of the charge/discharge circuit 12 to be turned on when the timer times to peak and controls the charge circuit of the charge/discharge circuit 12 to be turned on when the timer times to valley. For example, the charge/discharge controller 14 may further include a voltage detector for detecting whether the main power supply has a voltage input, and outputting a high level or a low level to the charge/discharge circuit 12 to switch between charge and discharge. The charge/discharge controller 14 of the present application may be implemented by a hardware circuit or a software chip, but the present application does not involve improvement of a control program of the charge/discharge controller 14, and may employ an existing program even if the control program is involved. The application mainly improves the point that the standby battery system is changed from a distributed type to a centralized type and is integrated with the energy storage battery system, and the UPS standby battery system configured in the original power distribution framework is canceled, so that the power distribution framework is simplified while the utilization rate of the battery is improved.
Fig. 4 is a schematic diagram of an architecture of an energy storage system 10 according to another embodiment of the present application. As shown in fig. 4, the charge-discharge circuit 12 includes a second transformer and a bidirectional converter.
A second transformer is connected to the first cable 11, the second transformer having a step-up and step-down function. The bidirectional converter is connected to the second transformer, the battery system 13 and the charge-discharge controller 14, and the charge-discharge controller 14 is used for controlling the bidirectional converter.
The second transformer is used to boost the voltage when the battery system 13 discharges, and to transmit the low voltage to the first cable 11 as a high voltage. The second transformer may be used in reverse, and serves as a transformer of the charging circuit to convert the high voltage into a low voltage and transmit the low voltage to the bidirectional converter to charge the battery system 13.
The bidirectional converter may be used when the battery system 13 is discharged, and inverts direct current into alternating current. The second transformer may be used in combination to invert ac to dc as a charging circuit. Switching of the bi-directional converter may be controlled by the charge-discharge controller 14. The bi-directional converter may be a PCS (energy storage converter).
In one embodiment, the charge-discharge circuit 12 further includes a first transformer and an AC/DC (alternating current/direct current) converter. A first transformer connected to the first cable 11 for reducing voltage during a charging phase, and an AC/DC converter connected to the first transformer and the battery system 13 for converting AC power into DC power and charging the battery system 13.
For safety reasons, the charging circuit or the discharging circuit may be provided independently, the first transformer and the AC/DC converter as the charging circuit, and the second transformer and the bidirectional converter as the discharging circuit, the second transformer and the bidirectional converter being used as the charging circuit only in special situations, such as a failure of the first transformer or a failure of the AC/DC converter.
In one embodiment, as shown in fig. 4, the charge-discharge circuit 12 further includes a switching tube. The switching tube is connected to the first cable 11 and is used for controlling the connection and disconnection of the first cable 11. For example, the switching tube may be an SCR (silicon controlled rectifier).
In one embodiment, the charge-discharge circuit 12 may further include an emergency bypass connected in parallel with the switching tube for use as an emergency circuit in the event of a failure of the switching tube. In an embodiment, the emergency bypass comprises a first circuit breaker connected in parallel to both ends of the switching tube. For the sake of distinction, the circuit breaker in the emergency bypass is called the first circuit breaker.
Fig. 5 is a schematic diagram of a power distribution architecture of a data center according to an embodiment of the present application. As shown in fig. 5, the data center includes the energy storage system 10, the high voltage bus, and the plurality of load modules 15 described in the above embodiments.
Wherein a high voltage bus is connected to the output end of the first cable 11 of the energy storage system 10, and a plurality of load modules 15 are connected to the high voltage bus.
Wherein each load module 15 comprises a third transformer 151, a low voltage bus, an IT load and a refrigeration device. Specifically, the third transformer 151 is connected to a high voltage bus bar and a low voltage bus bar. The IT load and the refrigeration equipment are connected with the low-voltage bus. The IT load may be a computer, a server, or the like. The refrigeration equipment may include liquid cooling equipment, air cooling equipment, and the like.
In a normal operation state, electric energy is input from the input end of the first cable 11, is output to the output end of the first cable 11 through the switching tube, and supplies power for IT loads and refrigeration equipment. The energy storage system 10 charges the battery system 13 through the first transformer and the AC/DC converter when in charging operation, and discharges through the bidirectional converter and the second transformer when the energy storage system 10 discharges to supply power to IT loads and refrigeration equipment.
When the first transformer or the AC/DC converter fails, the battery system 13 is charged through the second transformer and the bidirectional converter. When the input main power supply is abnormal, the bidirectional converter and the second transformer discharge to supply power to the IT load and the refrigeration equipment. When the switching tube fails, the switching is performed to the emergency bypass operation, and the energy storage system 10 can not run daily peak clipping and valley filling any more according to the requirement without considering the factors of the electric charge.
It should be noted that, in the related art, the energy storage battery system is connected by adopting a centralized design, the standby battery system is connected by adopting a distributed type, the energy storage battery system circulates daily, the standby battery system is always in a standby state, the service life of the energy storage battery is fast to decay, the standby battery is always in an inactive state, and the waste of capacity and the acceleration of decay are caused.
The prior art realizes the integration of the energy storage battery and the standby battery, but adopts distributed architecture deployment, the system control is complex, and the unified regulation and control difficulty is high when the peak clipping and valley filling operation is performed; the application adopts a centralized design, is controlled by the charge-discharge controller 14, and has simple control logic and more reliability.
In addition, the energy storage system 10 of the application adopts a centralized design, which can realize uninterrupted power supply of all loads, thus eliminating the diesel generator emergency power supply system, simplifying the power distribution architecture and reducing the complexity.
It should be noted that the features of the embodiments of the present application may be combined with each other without conflict. The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (10)
1. An energy storage system for use in a data center, the energy storage system comprising:
The input end of the first cable is used for being connected with a main power supply, and the output end of the first cable is used for being connected with a high-voltage bus;
A charge-discharge circuit connected to the first cable;
the charging and discharging circuit is used for charging and discharging the battery system;
And the charge-discharge controller is connected with the charge-discharge circuit and used for controlling the charge-discharge circuit.
2. The energy storage system of claim 1, wherein the charge-discharge circuit comprises:
the second transformer is connected with the first cable and has the functions of boosting and dropping;
And the bidirectional converter is connected with the second transformer, the battery system and the charge-discharge controller, and the charge-discharge controller is used for controlling the bidirectional converter.
3. The energy storage system of claim 2, wherein the charge-discharge circuit further comprises:
the first transformer is connected with the first cable and used for reducing voltage;
The AC/DC converter is connected with the first transformer and the battery system and is used for converting alternating current into direct current and charging the battery system.
4. The energy storage system of claim 1, wherein the charge-discharge circuit further comprises:
And the switch tube is connected with the first cable and used for controlling the connection and disconnection of the first cable.
5. The energy storage system of claim 4, wherein said charge and discharge circuit further comprises:
and the emergency bypass is connected with the switching tube in parallel and is used as an emergency circuit when the switching tube fails.
6. The energy storage system of claim 5, wherein the emergency bypass comprises a first circuit breaker connected in parallel across the switching tube.
7. The energy storage system of claim 1, further comprising:
And the input end of the first cable is connected with a main power supply through the second circuit breaker.
8. The energy storage system of claim 1, further comprising:
And the output end of the first cable is connected with the high-voltage bus through the third circuit breaker.
9. A data center, comprising:
the energy storage system of any one of claims 1-8;
The high-voltage bus is connected with the output end of the first cable of the energy storage system;
and the load modules are connected with the high-voltage bus.
10. The data center of claim 9, wherein each load module comprises:
the third transformer is connected with the high-voltage bus;
A low-voltage bus connected with the third transformer;
And the IT load and the refrigeration equipment are connected with the low-voltage bus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420023609.XU CN222423301U (en) | 2024-01-04 | 2024-01-04 | Energy storage system and data center |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420023609.XU CN222423301U (en) | 2024-01-04 | 2024-01-04 | Energy storage system and data center |
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| Publication Number | Publication Date |
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| CN222423301U true CN222423301U (en) | 2025-01-28 |
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| CN202420023609.XU Active CN222423301U (en) | 2024-01-04 | 2024-01-04 | Energy storage system and data center |
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