CN112398155A - Data center power supply system based on three-station-in-one - Google Patents
Data center power supply system based on three-station-in-one Download PDFInfo
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- CN112398155A CN112398155A CN202011268278.9A CN202011268278A CN112398155A CN 112398155 A CN112398155 A CN 112398155A CN 202011268278 A CN202011268278 A CN 202011268278A CN 112398155 A CN112398155 A CN 112398155A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for AC mains or AC distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
- H02H7/28—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured for meshed systems
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J1/00—Circuit arrangements for DC mains or DC distribution networks
- H02J1/10—Parallel operation of DC sources
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00001—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by the display of information or by user interaction, e.g. supervisory control and data acquisition systems [SCADA] or graphical user interfaces [GUI]
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00002—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for AC mains or AC distribution networks
- H02J3/24—Arrangements for preventing or reducing oscillations of power in networks
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/068—Electronic means for switching from one power supply to another power supply, e.g. to avoid parallel connection
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Human Computer Interaction (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
本发明涉及一种基于三站合一的数据中心电源系统。包括高压直流供电单元、电源监控单元、电池管理系统、站内监控系统；所述高压直流供电单元包括储能站蓄电池组、储能变流器、升压变压器、直流馈线屏，各储能站蓄电池组分别通过储能变流器、升压变压器与电网连接，各储能站蓄电池组与储能变流器直流侧连接点作为高压直流电源输出端，每两个高压直流电源输出端与一面直流馈线屏的两输入端连接，以实现高压直流的2N模式供电；所述电源监控单元与电池管理系统和站内监控系统进行双向通信，从而实现对高压直流供电单元的控制。本发明可有效提高蓄电池的运行时间和整体蓄电池的效率。
The invention relates to a data center power supply system based on three-station integration. It includes a high-voltage DC power supply unit, a power monitoring unit, a battery management system, and an in-station monitoring system; the high-voltage DC power supply unit includes an energy storage station battery bank, an energy storage converter, a step-up transformer, a DC feeder screen, and each energy storage station battery The group is connected to the power grid through the energy storage converter and the step-up transformer respectively. The connection point between the battery group of each energy storage station and the DC side of the energy storage converter is used as the output terminal of the high-voltage DC power supply. The two input ends of the feeder screen are connected to realize high-voltage DC 2N mode power supply; the power monitoring unit performs bidirectional communication with the battery management system and the in-station monitoring system, thereby realizing the control of the high-voltage DC power supply unit. The invention can effectively improve the running time of the storage battery and the efficiency of the whole storage battery.
Description
Technical Field
The invention relates to a data center power supply system based on three-station-in-one, which is suitable for a special data center server power supply system and matching equipment of a transformer substation, an energy storage station and a data center three-station-in-one station.
Background
Server power supplies for data centers are currently mainly classified into three types:
1) mains ac supply (shown in fig. 1);
2) UPS system power (shown in fig. 2);
3) supplying power to a high-voltage direct-current system (shown in figure 3);
the power supply mode includes: the UPS system or the high-voltage direct-current system adopts an N +1 mode or a 2N mode, and the UPS system or the high-voltage direct-current system is mixed with the mains supply.
For a data server with lower power supply reliability, the data server generally adopts commercial power alternating current power supply, so that the investment is small; for a data server with higher power supply reliability, a UPS system or a high-voltage direct-current power supply is generally adopted, and both the UPS system and the data server need to be provided with a storage battery and a voltage change module with corresponding capacities, so that the reliability is higher, but the investment is high. And the number of data center servers is large, and a small and medium-sized data center needs to be configured with a 1MW storage battery pack. Large capacity batteries require separate fire protection and control systems and require periodic maintenance and replacement.
At present, the national network provides a three-station-in-one station, a transformer substation, an energy storage station and a data center are fused, and the transformer substation and the energy storage station can provide power for a power supply system of the data center. Therefore, the application provides a three-station-in-one based data center power supply system.
Disclosure of Invention
The invention aims to provide a data center power supply system based on three-station-in-one, which can effectively improve the running time of a storage battery and the efficiency of the whole storage battery.
In order to achieve the purpose, the technical scheme of the invention is as follows: a data center power supply system based on three-station integration comprises a high-voltage direct-current power supply unit, a power supply monitoring unit, a battery management system and an in-station monitoring system;
the high-voltage direct-current power supply unit comprises energy storage station storage battery packs, an energy storage converter, a step-up transformer and a direct-current feeder screen, wherein each energy storage station storage battery pack is connected with a power grid through the energy storage converter and the step-up transformer respectively;
the power supply monitoring unit is in bidirectional communication with the battery management system and the in-station monitoring system, so that the high-voltage direct-current power supply unit is controlled;
the specific communication content of the bidirectional communication between the power supply monitoring unit and the battery management system and the in-station monitoring system is as follows:
(1) the power supply monitoring unit receives monitoring information of an energy storage station storage battery pack of the battery management system, reports an alarm signal when the energy storage station storage battery pack is abnormal, sends a power supply switching command, switches a direct-current power supply in parallel and ensures that a server of the data center is not powered off;
(2) the power supply monitoring unit sends load information to the battery management system as battery management input information of the battery management system;
(3) the power supply monitoring unit, the in-station monitoring system and the battery management system coordinate storage battery capacity distribution in the storage battery pack of the energy storage station together, power supply of a data center is used as the highest priority, and when the capacity of the storage battery in the storage battery pack of the energy storage station is smaller than the capacity limit of a backup power supply of the data center, the energy storage converter is locked and a corresponding loop high-voltage circuit breaker is disconnected.
In an embodiment of the present invention, a DC/DC conversion device is installed in the DC feeder panel to convert 220V voltage output from the output terminal of the high voltage DC power supply into 240V voltage.
Compared with the prior art, the invention has the following beneficial effects:
(1) the storage battery of the data center direct-current power supply is connected into the storage battery of the energy storage station, so that the overall cost of three-station integration is reduced;
(2) usually, the power supply system of the data center station is not provided with an independent BMS system, so that the reliability of the storage battery can be improved by being combined with the storage battery pack of the energy storage station, and the subsequent operation and maintenance cost is reduced by unifying the operation and maintenance;
(3) the storage battery of the power supply of the data center is incorporated into the energy storage station, so that the fire safety can be considered uniformly, and the fire safety level of the whole station is effectively improved;
(4) because the data center battery is as back-up source, consequently be in the float charge state under the normal condition, be unfavorable for the battery to preserve, incorporate into and adopt the data center direct current system based on three stations unifications, can effectively improve the operating time of battery and the efficiency of whole battery.
Drawings
Fig. 1 is a mains ac supply topology.
Fig. 2 is a UPS power supply topology.
Fig. 3 is a high voltage dc power supply topology.
Fig. 4 is a three-station-in-one data center-based dc power supply system topology according to the present invention.
Fig. 5 is a diagram of a monitoring system of a dc power supply system based on a three-station-in-one data center according to the present invention.
Detailed Description
The technical scheme of the invention is specifically explained below with reference to the accompanying drawings.
The invention provides a data center power supply system based on three-station integration, which comprises a high-voltage direct-current power supply unit, a power supply monitoring unit, a battery management system and an in-station monitoring system, wherein the high-voltage direct-current power supply unit is connected with the power supply monitoring unit;
the high-voltage direct-current power supply unit comprises energy storage station storage battery packs, an energy storage converter, a step-up transformer and a direct-current feeder screen, wherein each energy storage station storage battery pack is connected with a power grid through the energy storage converter and the step-up transformer respectively;
the power supply monitoring unit is in bidirectional communication with the battery management system and the in-station monitoring system, so that the high-voltage direct-current power supply unit is controlled;
the specific communication content of the bidirectional communication between the power supply monitoring unit and the battery management system and the in-station monitoring system is as follows:
(1) the power supply monitoring unit receives monitoring information of an energy storage station storage battery pack of the battery management system, reports an alarm signal when the energy storage station storage battery pack is abnormal, sends a power supply switching command, switches a direct-current power supply in parallel and ensures that a server of the data center is not powered off;
(2) the power supply monitoring unit sends load information to the battery management system as battery management input information of the battery management system;
(3) the power supply monitoring unit, the in-station monitoring system and the battery management system coordinate storage battery capacity distribution in the storage battery pack of the energy storage station together, power supply of a data center is used as the highest priority, and when the capacity of the storage battery in the storage battery pack of the energy storage station is smaller than the capacity limit of a backup power supply of the data center, the energy storage converter is locked and a corresponding loop high-voltage circuit breaker is disconnected.
The following is a specific implementation of the present invention.
As shown in fig. 4, a three-station-in-one based data center power supply system includes:
(1) power supply topology connection
The invention utilizes the storage battery of the energy storage station and the power supply of the transformer substation as the power supply of the data center server and adopts a high-voltage direct current system to supply power (DC 220V). The storage batteries of the energy storage station are arranged in groups, and each group is connected with a Power grid through a Power Control System (PCS) and a step-up transformer. The high-voltage direct current power source of the data center server is connected between each group of storage battery pack and the direct current side of the PCS, the high-voltage direct current power source is led out from the storage battery pack and is connected to a direct current feeder screen in a server installation chamber, in order to ensure high reliability of a power supply system, a 2N mode is adopted, and each direct current feeder screen is supplied with power by 2 groups of different storage batteries after voltage switching. A DC/DC conversion device is arranged in the direct current feeder screen, 220V voltage is converted into 240V voltage to meet the requirement of a domestic mainstream high-voltage direct current power supply system, and the direct current voltage stabilization requirement is taken into consideration.
(2) Monitoring system
An independent power supply monitoring system is established based on a three-station-in-one data center direct current power supply system, and the monitoring system needs to acquire total voltage of a storage battery, PCS current voltage, PCS power curves, ATS incoming line and outgoing line current voltage in a direct current feeder screen, power supply harmonic waves and the like.
The direct current power supply monitoring system needs to be in two-way communication with a BMS (battery management system) and an in-station monitoring system, and the specific communication contents are as follows:
1) the direct current monitoring system receives storage battery monitoring information of the BMS, reports an alarm signal when the storage battery is abnormal, sends a power supply switching command, switches the direct current power supply in parallel and ensures that the server is not powered off.
2) The dc monitoring system transmits load information including current, voltage, harmonics, power curves, etc. to the BMS as BMS battery management input information.
3) And the direct current monitoring system, the in-station monitoring system and the BMS coordinate the capacity distribution of the storage battery together, the power supply of the data center is taken as the highest priority, and when the capacity of the storage battery is smaller than the capacity limit of a backup power supply of the data center, the PCS is locked and the high-voltage circuit breaker of the corresponding loop is disconnected.
Referring to fig. 4 and 5, a direct current air switch is arranged in a PCS cabinet of the energy storage station part and connected with a direct current power supply bus, and the direct current air switch is connected with a direct current side of a storage battery and a PCS. And a direct current power supply is led to the direct current feeder screen panel of the data center through a power cable, each direct current sub-screen is led to the power supply by two groups of different storage battery packs, and the direct current sub-screen supplies power to the data server after ATS switching.
At present, the domestic common PCS capacity is 630kW, so that the maximum single group of the storage battery capacity is 630kW, and the energy is 1260kWh because the storage battery is discharged according to 2 h. And if each group of storage batteries is not more than 20% of capacity and is used as a data center power supply, the capacity of the direct-current feeder screen of each set of data center is 630 × 0.2=120 kW. Assuming a power of 6kW for the single-sided data server cabinets, the backup power supply time is considered at 15min according to the specifications, the rated current of the single cabinet is 27A, and the energy requirement of the backup power supply is 6 × 15/60=1.5 kWh. Therefore, each direct current feeder screen can meet the access of 20 server cabinets, and if 600 servers are arranged in a station, 30 direct current feeder screens need to be configured.
If each direct current feeder screen is considered to be powered by two independent storage battery packs, and the storage batteries between the direct current feeder screens are not crossed, 60 storage batteries are needed to be corresponding to each direct current feeder screen, the energy storage capacity in the corresponding station is 60 × 0.63=37.8MW, and the energy load ratio of the data center of each storage battery is 1.5/(630 × 2) = 0.1%. If 2 groups of storage batteries are commonly used for each two-side direct-current feeder screen, 30 groups of storage batteries need to be corresponded, the corresponding energy storage capacity in the station is 30 × 0.63=18.9MW, and the data center energy load ratio of each group of storage batteries is 3/(630 × 2) = 0.2%. No matter which scheme is adopted, the load of the data center does not exceed 1% of the energy of the storage battery, so that the normal peak-load and frequency-modulation function of the energy storage station is not influenced.
When the power grid normally operates, energy storage modules (storage batteries and PCS) connected with loads of the data center participate in peak shaving and frequency modulation of the power grid according to 80% of rated power, and the rest 20% of power supplies power for the data center. When a power grid fails, for example, when a bus in a station is short-circuited, the incoming line breaker is cut off and the PCS is locked, and the storage battery independently supplies power to the data center.
The above are preferred embodiments of the present invention, and all changes made according to the technical scheme of the present invention that produce functional effects do not exceed the scope of the technical scheme of the present invention belong to the protection scope of the present invention.
Claims (2)
1. A data center power supply system based on three-station integration is characterized by comprising a high-voltage direct-current power supply unit, a power supply monitoring unit, a battery management system and an in-station monitoring system;
the high-voltage direct-current power supply unit comprises energy storage station storage battery packs, an energy storage converter, a step-up transformer and a direct-current feeder screen, wherein each energy storage station storage battery pack is connected with a power grid through the energy storage converter and the step-up transformer respectively;
the power supply monitoring unit is in bidirectional communication with the battery management system and the in-station monitoring system, so that the high-voltage direct-current power supply unit is controlled;
the specific communication content of the bidirectional communication between the power supply monitoring unit and the battery management system and the in-station monitoring system is as follows:
(1) the power supply monitoring unit receives monitoring information of an energy storage station storage battery pack of the battery management system, reports an alarm signal when the energy storage station storage battery pack is abnormal, sends a power supply switching command, switches a direct-current power supply in parallel and ensures that a server of the data center is not powered off;
(2) the power supply monitoring unit sends load information to the battery management system as battery management input information of the battery management system;
(3) the power supply monitoring unit, the in-station monitoring system and the battery management system coordinate storage battery capacity distribution in the storage battery pack of the energy storage station together, power supply of a data center is used as the highest priority, and when the capacity of the storage battery in the storage battery pack of the energy storage station is smaller than the capacity limit of a backup power supply of the data center, the energy storage converter is locked and a corresponding loop high-voltage circuit breaker is disconnected.
2. The three-station-in-one-based data center power supply system as claimed in claim 1, wherein a DC/DC conversion device is installed in the DC feeder screen to convert 220V voltage outputted from the high voltage DC power supply output terminal into 240V voltage.
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| CN202011268278.9A CN112398155A (en) | 2020-11-13 | 2020-11-13 | Data center power supply system based on three-station-in-one |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112910080A (en) * | 2021-03-04 | 2021-06-04 | 中国联合网络通信集团有限公司 | A power supply method, device and storage medium |
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| CN110797979A (en) * | 2019-11-05 | 2020-02-14 | 国网江苏省电力有限公司南通供电分公司 | Three-in-one safe operation system of smart grid based on multi-type network terminals |
| CN111884202A (en) * | 2020-06-29 | 2020-11-03 | 国网浙江省电力有限公司杭州供电公司 | DC system power supply unit for three stations in one |
| CN111917170A (en) * | 2020-06-30 | 2020-11-10 | 南京南瑞继保电气有限公司 | Fusion power supply device for energy storage power station and data center load |
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2020
- 2020-11-13 CN CN202011268278.9A patent/CN112398155A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007274827A (en) * | 2006-03-31 | 2007-10-18 | Chugoku Electric Power Co Inc:The | System for managing supply and demand of rechargeable battery |
| CN110797979A (en) * | 2019-11-05 | 2020-02-14 | 国网江苏省电力有限公司南通供电分公司 | Three-in-one safe operation system of smart grid based on multi-type network terminals |
| CN111884202A (en) * | 2020-06-29 | 2020-11-03 | 国网浙江省电力有限公司杭州供电公司 | DC system power supply unit for three stations in one |
| CN111917170A (en) * | 2020-06-30 | 2020-11-10 | 南京南瑞继保电气有限公司 | Fusion power supply device for energy storage power station and data center load |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112910080A (en) * | 2021-03-04 | 2021-06-04 | 中国联合网络通信集团有限公司 | A power supply method, device and storage medium |
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Application publication date: 20210223 |