WO2022012427A1 - 直流供配电控制方法、系统及直流微数据中心 - Google Patents

直流供配电控制方法、系统及直流微数据中心 Download PDF

Info

Publication number
WO2022012427A1
WO2022012427A1 PCT/CN2021/105439 CN2021105439W WO2022012427A1 WO 2022012427 A1 WO2022012427 A1 WO 2022012427A1 CN 2021105439 W CN2021105439 W CN 2021105439W WO 2022012427 A1 WO2022012427 A1 WO 2022012427A1
Authority
WO
WIPO (PCT)
Prior art keywords
voltage
output side
power supply
distribution control
bus
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2021/105439
Other languages
English (en)
French (fr)
Inventor
罗晓
钟宽
陈勇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gree Electric Appliances Inc of Zhuhai
Original Assignee
Gree Electric Appliances Inc of Zhuhai
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gree Electric Appliances Inc of Zhuhai filed Critical Gree Electric Appliances Inc of Zhuhai
Publication of WO2022012427A1 publication Critical patent/WO2022012427A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; 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
    • H02J3/36—Arrangements for transfer of electric power between AC networks via high-voltage DC [HVDC] links; Arrangements for transfer of electric power between generators and networks via HVDC links
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; 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
    • H02J1/12—Parallel operation of DC sources having power converters with further DC sources without power converters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2101/00—Supply or distribution of decentralised, dispersed or local electric power generation
    • H02J2101/20—Dispersed power generation using renewable energy sources
    • H02J2101/22—Solar energy
    • H02J2101/24—Photovoltaics
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2101/00—Supply or distribution of decentralised, dispersed or local electric power generation
    • H02J2101/20—Dispersed power generation using renewable energy sources
    • H02J2101/28—Wind energy
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y02E10/56—Power conversion systems, e.g. maximum power point trackers
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/60—Arrangements for transfer of electric power between AC networks or generators via a high voltage DC link [HVCD]

Definitions

  • the present disclosure is based on the CN application number 202010677134.2 and the filing date is July 14, 2020, and claims its priority.
  • the disclosure of the CN application is hereby incorporated into the disclosure of the present application as a whole.
  • the present disclosure relates to the field of data centers, and in particular, to a DC power supply and distribution control method and system, and a DC micro data center applying the method and/or system.
  • UPS Uninterruptible Power Supply
  • AC power supply and distribution that is, AC input, AC output, and electrical load are AC.
  • the design of AC input, DC output, and DC power load has gradually appeared, but there is still a design of AC to DC, and there is still energy loss from AC to DC.
  • the present disclosure proposes a DC power supply and distribution control method and system, and a DC micro data center applying the method and/or system.
  • the present disclosure provides a DC power supply and distribution control method, including: controlling an on-line power generation unit and a DC grid terminal to provide DC power to a load through a busbar output side; monitoring the real-time voltage and real-time current of the busbar output side; and judging the real-time voltage Whether it is less than the preset protection voltage; if so, control the bus output side to output the preset protection current; if not, control the bus output side to output the preset protection voltage.
  • the method further includes: controlling the on-line energy storage unit to exchange electrical energy with the output side of the bus.
  • the controlling the on-line energy storage unit to exchange electrical energy with the bus output side includes: when the real-time voltage is greater than or equal to the equalizing voltage, the on-line energy storage unit performs equalizing; or the When the real-time voltage is less than the equalizing voltage and greater than or equal to the floating voltage, the online energy storage unit performs floating charging; or when the real-time voltage is lower than the floating charging voltage, the online energy storage unit discharges.
  • the method further includes: when the real-time voltage is greater than the over-high protection voltage or the stored energy of the online energy storage unit reaches a first predetermined value, stopping charging; when the real-time voltage is less than the under-voltage protection voltage Or when the stored energy of the on-line energy storage unit is lower than the second predetermined value, the discharge is stopped.
  • the preset protection voltage is the over-high protection voltage
  • the preset protection current is set according to the rated power of the load, the operating coefficient and the floating voltage.
  • the present invention also provides a DC power supply and distribution control system, comprising: a DC grid terminal, which is electrically connected to the output side of the busbar through a DC/DC converter; an on-line power generation unit, which is electrically connected to the output side of the busbar; a management unit are respectively electrically connected to the input end of the DC grid and the online power generation unit, and control the input end of the DC grid and the online power generation unit to coordinately output DC power to the output side of the bus to meet the load.
  • an on-line energy storage unit is further included, which is electrically connected to the output side of the bus bar; the on-line energy storage unit is used for exchanging electrical energy with the output side of the bus bar.
  • the said terminal further includes an AC grid terminal, which is electrically connected to the output side of the bus bar through an AC/DC converter.
  • the on-line power generation unit includes a photovoltaic power generation unit and/or a wind power generation unit, the photovoltaic power generation unit is directly electrically connected or electrically connected to the output side of the busbar through a DC/DC converter, and the wind power generation unit is electrically connected to the output side of the busbar.
  • the unit is electrically connected directly or via an AC/DC converter to the bus output side.
  • the present disclosure provides a DC micro data center, which is provided with electric power by the above-mentioned DC power supply and distribution control method.
  • the present disclosure provides a DC micro data center, which is provided with electrical energy by the above-mentioned DC power supply and distribution control system.
  • the present disclosure has the following advantages.
  • FIG. 1 is a schematic block diagram of the flow of a DC power supply and distribution control method according to an embodiment of the present disclosure.
  • FIG. 2 is a schematic block diagram of a DC power supply and distribution control system in an embodiment of the present disclosure.
  • the present disclosure proposes a DC power supply and distribution control method.
  • This method can be applied to DC micro data centers.
  • DC micro data centers usually have IT equipment such as servers, switches, routers, and firewalls. These devices are high-precision devices and therefore require stable voltage and current.
  • the method includes: controlling an on-line power generation unit and a DC power grid terminal to provide DC power to a load through a busbar output side; monitoring the real-time voltage and real-time current at the busbar output side; judging whether the real-time voltage is less than a preset protection voltage; if so, controlling the busbar output side Output preset protection current; if not, control bus output side to output preset protection voltage.
  • the present disclosure provides DC power to the busbar through the DC power grid input terminal and the on-line power generation unit, thereby reducing the UPS configuration in the traditional AC power supply and distribution, and reducing the energy consumption.
  • controlling the online power generation unit to provide DC power to the load through the output side of the bus specifically includes controlling the online photovoltaic power generation unit and/or the online wind power generation unit to be electrically connected to the output side of the bus, respectively, and to supply the load through the output side of the bus.
  • the load provides direct current.
  • controlling the on-line power generation unit and the DC power grid terminal to provide DC power to the load through the bus output side specifically includes: firstly, controlling the online power generation unit to provide DC power to the load through the bus output side, and monitoring the real-time voltage on the bus output side at this time. and/or real-time current, if the load demand can be met, no further control is performed; if the load demand cannot be met, the DC grid terminal is further controlled to provide DC power to the load through the bus output side.
  • the DC power supply and distribution control method further includes controlling the on-line energy storage unit to exchange electrical energy with the busbar output side.
  • the online energy storage unit has the following voltage values: over-voltage protection voltage, equalizing voltage, floating voltage, and under-voltage protection voltage.
  • the overvoltage protection voltage of an online energy storage unit is 58V
  • the equalizing voltage is 56.8V
  • the floating charging voltage is 53.4V
  • the undervoltage protection voltage is 46V.
  • the preset protection voltage is an excessive protection voltage.
  • all loads refer to: when the on-line energy storage unit discharges to the output side of the bus, all loads do not include the on-line energy storage unit. When the output side of the busbar charges the online energy storage unit, all loads include the online energy storage unit.
  • the total rated power * operating coefficient k is the operating power, and the operating coefficient k is generally 30%-40%.
  • controlling the exchange of electrical energy between the on-line energy storage unit and the output side of the bus includes monitoring the real-time voltage and comparing the real-time voltage with the overvoltage protection voltage, equalization voltage, float voltage, and undervoltage protection voltage.
  • the online energy storage unit performs equalizing; or when the real-time voltage is less than the equalizing voltage and greater than or equal to the floating voltage, the online energy storage unit performs floating charging; or when the real-time voltage is less than the floating voltage
  • the on-line energy storage unit discharges.
  • the charging is stopped.
  • the online energy storage unit is in a discharge state, and when it is monitored that the real-time voltage is lower than the undervoltage protection voltage or the stored energy of the online energy storage unit is lower than the second predetermined value, the discharging is stopped.
  • the bus output side outputs the preset protection current.
  • the control bus output side outputs the over-high protection voltage.
  • the input voltage of the DC grid terminal is 400V
  • the DC grid terminal converts 400V to 48V through a DC/DC converter and inputs it to the output side of the bus.
  • the online photovoltaic power generation unit directly sends 48V voltage input to the busbar output side or converts other voltage values to 48V through the DC/DC converter and inputs it to the busbar output side.
  • the on-line wind power generation unit converts the alternating current into 48V direct current through the AC/DC converter and inputs it to the output side of the bus bar.
  • the first predetermined value may be 100%
  • the second predetermined value may be 20%. In other embodiments, the relevant electrical parameters are set according to specific needs.
  • the present disclosure further replaces the conventional UPS by setting an online energy storage unit to provide emergency power when the power supply of the DC grid input end and the online power generation unit is insufficient, which ensures the stability of power supply and distribution, and ensures the output side of the bus and the DC power supply. Safe operation on the load side. Make electricity more efficient, safer, more energy-saving, and more miniaturized.
  • the present disclosure also provides a DC power supply and distribution control system, comprising: a DC grid terminal, which is electrically connected to the output side of the busbar through a DC/DC converter; an on-line power generation unit, which is electrically connected to the output side of the busbar; a management unit, which is respectively It is electrically connected to the input end of the DC grid and the online power generation unit, and controls the input end of the DC grid and the online power generation unit to coordinate the output of DC power to the output side of the bus to meet the load.
  • the DC grid terminal is connected to the busbar through a DC/DC converter.
  • the online power generation unit includes a photovoltaic power generation unit and/or a wind power generation unit.
  • the photovoltaic power generation unit is directly electrically connected to or electrically connected to the output side of the busbar through a DC/DC converter
  • the wind power generation unit is directly electrically connected to or through an AC/DC converter. It is electrically connected to the output side of the bus bar.
  • an on-line energy storage unit is also included, which is electrically connected to the output side of the bus bar; the on-line energy storage unit is used for exchanging electrical energy with the output side of the bus bar.
  • the DC grid end, the AC grid end and the online power generation unit supply DC power to the load through the bus output side is insufficient, the online energy storage unit discharges and provides DC power to the load through the bus output side.
  • the bus output side charges the online energy storage unit.
  • the DC power supply and distribution control system further includes an AC grid terminal, which is electrically connected to the busbar output side through an AC/DC converter.
  • the present disclosure also provides a DC micro data center, which is provided with electric power by the above-mentioned DC power supply and distribution control method.
  • the present disclosure also provides a DC micro data center, which is provided with electric power by the above-mentioned DC power supply and distribution control system.
  • the present disclosure has the following advantages.
  • DC power to the busbar through the DC grid input terminal and the online power generation unit which reduces the UPS configuration in the traditional AC power supply and distribution, and reduces the energy consumption.
  • the on-line energy storage unit when the power supply of the DC grid input terminal and the on-line power generation unit is insufficient, emergency power is provided to ensure the stability of power supply and distribution.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Direct Current Feeding And Distribution (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Supply And Distribution Of Alternating Current (AREA)

Abstract

本公开公开了一种直流供配电控制方法、系统及直流微数据中心，该直流供配电控制方法包括：控制在线式发电单元及直流电网端通过母线输出侧给负载提供直流电；监测所述母线输出侧的实时电压及实时电流；判断所述实时电压是否小于预设保护电压；若是，则控制所述母线输出侧输出预设保护电流；若否，则控制所述母线输出侧输出预设保护电压。本公开减少了传统交流供配电中的UPS配置，降低了能耗。提高了供配电系统运行稳定性和直流微数据中心的运行安全性。

Description

直流供配电控制方法、系统及直流微数据中心
相关申请的交叉引用
本公开是以CN申请号为202010677134.2，申请日为2020年7月14日的申请为基础，并主张其优先权，该CN申请的公开内容在此作为整体引入本申公开中。
技术领域
本公开涉及数据中心领域，特别是涉及一种直流供配电控制方法、系统及应用该方法及/或系统的直流微数据中心。
背景技术
在数据中心应用领域，通常有服务器、交换机、路由器、防火墙等IT设备。这些设备属于高精度设备需要稳定的电压输入，因此通常配置不间断电源UPS(Uninterruptible Power Supply)以保障输出稳定电压，以及配置应急电源以防止电网断电等异常。常规的设计做法是交流供配电，即交流输入、交流输出、用电负载为交流。近些年来逐渐出现交流输入、直流输出、用电负载为直流的设计，但依然存在有交流转直流的设计，依然存在交流转直流的能耗损失。
现实情况中，数据中心能耗巨大，对政府对企业造成沉重负担。国家已严控数据中心建设，并指导加快绿色数据中心建设，降低能耗，提升资源利用。
因此，如何设计一种能够节省直流微数据中心能耗的供配电技术方案是业界亟待解决的技术问题。
发明内容
本公开为了解决上述技术中直流微数据中心能耗过大的技术问题，提出一种直流供配电控制方法、系统及应用该方法及/或系统的直流微数据中心。
本公开采用的技术方案是：
本公开提供一种直流供配电控制方法，包括：控制在线式发电单元及直流电网端通过母线输出侧给负载提供直流电；监测所述母线输出侧的实时电压及实时电流；判断所述实时电压是否小于预设保护电压；若是，则控制所述母线输出侧输出预设保护电流；若否，则控制所述母线输出侧输出预设保护电压。
在一实施方式中，还包括：控制在线式储能单元与所述母线输出侧互换电能。
在一实施方式中，所述控制在线式储能单元与所述母线输出侧互换电能包括：所述实时电压大于等于均充电压时，所述在线式储能单元进行均充；或所述实时电压小于所述均 充电压且大于等于浮充电压时，所述在线式储能单元进行浮充；或所述实时电压小于所述浮充电压时，所述在线式储能单元进行放电。
在一实施方式中，还包括：当所述实时电压大于过高保护电压或所述在线式储能单元的储能量达到第一预定值时，停止充电；当所述实时电压小于欠压保护电压或所述在线式储能单元的储能量低于第二预定值时，停止放电。
在一实施方式中，所述预设保护电压为所述过高保护电压，所述预设保护电流根据负载的额定功率、运行系数及所述浮充电压设定。
本还发明提供一种直流供配电控制系统，包括：直流电网端，其通过DC/DC转换器电连接于母线输出侧；在线式发电单元，其电连接于所述母线输出侧；管理单元，分别电连接于所述直流电网输入端、在线式发电单元，并控制所述直流电网输入端、在线式发电单元协调输出直流电至所述母线输出侧以满足负载。
在一实施方式中，还包括在线式储能单元，其电连接于所述母线输出侧；所述在线式储能单元用于与所述母线输出侧互换电能。
在一实施方式中，所述还包括交流电网端，其通过AC/DC转换器电连接于母线输出侧。
在一实施方式中，所述在线式发电单元包括光伏发电单元及/或风力发电单元，所述光伏发电单元直接电连接于或通过DC/DC转换器电连接于母线输出侧，所述风力发电单元直接电连接于或通过AC/DC转换器电连接于母线输出侧。
本公开提供一种直流微数据中心，其由上述直流供配电控制方法提供电能。
本公开提供一种直流微数据中心，其由上述直流供配电控制系统提供电能。
与现有技术比较，本公开具有以下优点。
通过直流电网输入端及在线式发电单元提供直流电给母线，减少了传统交流供配电中的UPS配置，降低了能耗。通过设置在线式储能单元，在直流电网输入端及在线式发电单元供电不充足时，提供应急电能，保障了供配电的稳定性，提高了直流微数据中心的运行安全性。
附图说明
为了更清楚地说明本公开实施例中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本公开的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1为本公开实施例中直流供配电控制方法的流程示意框图。
图2为本公开实施例中直流供配电控制系统的示意框图。
具体实施方式
为了使本公开所要解决的技术问题、技术方案及有益效果更加清楚明白，以下结合附图及实施例，对本公开进行进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本公开，并不用于限定本公开。
下面结合附图以及实施例对本公开的原理及结构进行详细说明。
请参阅图1，本公开提出了一种直流供配电控制方法。该方法可以应用于直流微数据中心，直流微数据中心通常有服务器、交换机、路由器、防火墙等IT设备，这些设备属于高精度设备，因此需要稳定的电压电流。该方法包括：控制在线式发电单元及直流电网端通过母线输出侧给负载提供直流电；监测母线输出侧的实时电压及实时电流；判断实时电压是否小于预设保护电压；若是，则控制母线输出侧输出预设保护电流；若否，则控制母线输出侧输出预设保护电压。本公开通过直流电网输入端及在线式发电单元提供直流电给母线，减少了传统交流供配电中的UPS配置，降低了能耗。
具体地，请参阅图2，控制在线式发电单元通过母线输出侧给负载提供直流电具体包括控制在线式光伏发电单元和/或在线式风力发电单元分别电连接于母线输出侧，通过母线输出侧给负载提供直流电。在一实施例中，控制在线式发电单元及直流电网端通过母线输出侧给负载提供直流电具体包括：首先控制在线式发电单元通过母线输出侧给负载提供直流电，监控此时母线输出侧的实时电压及/或实时电流，若能满足负载需求，则不作进一步的控制，若不能满足负载需求，则进一步的控制直流电网端通过母线输出侧给负载提供直流电。
在在一些实施例中实施例中，直流供配电控制方法还包括控制在线式储能单元与母线输出侧互换电能。
需要说明的是，在线式储能单元设有以下电压值：过高保护电压、均充电压、浮充电压、欠压保护电压。其中，过高保护电压>均充电压>浮充电压>欠压保护电压。例如，某在线式储能单元的过高保护电压为58V、均充电压为56.8V、浮充电压为53.4V、欠压保护电压为46V。在此实施例中，预设保护电压为过高保护电压。预设保护电流根据负载的额定功率、运行系数及浮充电压设定，表达为数学关系式即：预设保护电流＝所有负载的总额定功率*运行系数k/浮充电压。式中，所有负载指：在线式储能单元放电给母线输出侧时，所有负载中不包括在线式储能单元。母线输出侧给在线式储能单元充电时，所有负载包括在线式储能单元。总额定功率*运行系数k即为运行功率，运行系数k一般为30％-40％。
具体的，控制在线式储能单元与母线输出侧互换电能包括：监控实时电压并比较实时电压与过高保护电压、均充电压、浮充电压、欠压保护电压的大小。在实时电压大于等于均充电压时，在线式储能单元进行均充；或在实时电压小于均充电压且大于等于浮充电压时，在线式储能单元进行浮充；或在实时电压小于浮充电压时，在线式储能单元进行放电。其中：当在线式储能单元处于充电状态，且当监控到实时电压大于过高保护电压或在线式储能单元的储能量达到第一预定值时，停止充电。当在线式储能单元处于放电状态，且当监控到实时电压小于欠压保护电压或在线式储能单元的储能量低于第二预定值时，停止放电。当实时电压小于过高保护电压时，母线输出侧输出预设保护电流。当实时电压大于等于过高保护电压时，则控制母线输出侧输出过高保护电压。
在一可选实施例中，直流电网端的输入电压为400V，直流电网端通过DC/DC转换器将400V转换为48V输入到母线输出侧。在线式光伏发电单元直接发出48V电压输入到母线输出侧或者通过DC/DC转换器将其他电压值转换为48V输入到母线输出侧。在线式风力发电单元通过AC/DC转换器将交流电转换为48V的直流电输入到母线输出侧。第一预定值可以为100％，第二预定值可以为20％。在其他实施例中，相关电气参数根据具体需要设定。
本公开进一步的通过设置在线式储能单元取代常规UPS，在直流电网输入端及在线式发电单元供电不充足时，提供应急电能，保障了供配电的稳定性，保障了母线输出侧及直流负载侧的安全运行。使得用电更高效、更安全、更节能、更小型化。
本公开还提供一种直流供配电控制系统，包括：直流电网端，其通过DC/DC转换器电连接于母线输出侧；在线式发电单元，其电连接于母线输出侧；管理单元，分别电连接于直流电网输入端、在线式发电单元，并控制直流电网输入端、在线式发电单元协调输出直流电至母线输出侧以满足负载。
具体地，直流电网端通过DC/DC转换器连接于母线上。在线式发电单元包括光伏发电单元及/或风力发电单元，光伏发电单元直接电连接于或通过DC/DC转换器电连接于母线输出侧，风力发电单元直接电连接于或通过AC/DC转换器电连接于母线输出侧。
在进一步的实施例中，还包括在线式储能单元，其电连接于母线输出侧；在线式储能单元用于与母线输出侧互换电能。在直流电网端、交流电网端及在线式发电单元通过母线输出侧给负载提供直流电不足时，在线式储能单元放电通过母线输出侧给负载提供直流电。在直流电网端、交流电网端及在线式发电单元通过母线输出侧给负载提供直流电充足时，母线输出侧给在线式储能单元充电。
在一可选实施例中，该直流供配电控制系统还包括交流电网端，其通过AC/DC转换 器电连接于母线输出侧。
本公开还提供一种直流微数据中心，其由上述直流供配电控制方法提供电能。
本公开还提供一种直流微数据中心，其由上述直流供配电控制系统提供电能。
与发明人已知的技术比较，本公开具有以下优点。
通过直流电网输入端及在线式发电单元提供直流电给母线，减少了传统交流供配电中的UPS配置，降低了能耗。通过设置在线式储能单元，在直流电网输入端及在线式发电单元供电不充足时，提供应急电能，保障了供配电的稳定性。
以上所述仅为本公开的较佳实施例而已，并不用以限制本公开，凡在本公开的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本公开的保护范围之内。

Claims (16)

  1. 一种直流供配电控制方法，其特征是，包括：
    控制在线式发电单元及直流电网端通过母线输出侧给负载提供直流电；
    监测所述母线输出侧的实时电压及实时电流；
    判断所述实时电压是否小于预设保护电压；若是，则控制所述母线输出侧输出预设保护电流；若否，则控制所述母线输出侧输出预设保护电压。
  2. 如权利要求1所述的直流供配电控制方法，其特征是，还包括：控制在线式储能单元与所述母线输出侧互换电能。
  3. 如权利要求2所述的直流供配电控制方法，其特征是，所述控制在线式储能单元与所述母线输出侧互换电能包括：
    所述实时电压大于等于均充电压时，所述在线式储能单元进行均充；或
    所述实时电压小于所述均充电压且大于等于浮充电压时，所述在线式储能单元进行浮充；或
    所述实时电压小于所述浮充电压时，所述在线式储能单元进行放电。
  4. 如权利要求3所述的直流供配电控制方法，其特征是，还包括：
    当所述实时电压大于过高保护电压或所述在线式储能单元的储能量达到第一预定值时，停止充电；
    当所述实时电压小于欠压保护电压或所述在线式储能单元的储能量低于第二预定值时，停止放电。
  5. 如权利要求4所述的直流供配电控制方法，其特征是，所述预设保护电压为所述过高保护电压，所述预设保护电流根据负载的额定功率、运行系数及所述浮充电压设定。
  6. 如权利要求4所述的直流供配电控制方法，其中，过高保护电压>均充电压>浮充电压>欠压保护电压。
  7. 如权利要求5所述的直流供配电控制方法，其中：
    在线式储能单元放电给母线输出侧时，负载不包括在线式储能单元；
    在母线输出侧给在线式储能单元充电时，负载包括在线式储能单元。
  8. 如权利要求1至7任一项所述的直流供配电控制方法，其中，直流电网端的输入电压为400V，直流电网端通过DC/DC转换器将400V转换为48V输入到母线输出侧。
  9. 一种直流供配电控制系统，其特征是，包括：
    直流电网端，其通过DC/DC转换器电连接于母线输出侧；
    在线式发电单元，其电连接于所述母线输出侧；
    管理单元，分别电连接于所述直流电网输入端、在线式发电单元，并控制所述直流电网输入端、在线式发电单元协调输出直流电至所述母线输出侧以满足负载。
  10. 如权利要求9所述的直流供配电控制系统，其特征是，还包括在线式储能单元，其电连接于所述母线输出侧；所述在线式储能单元用于与所述母线输出侧互换电能。
  11. 如权利要求10所述的直流供配电控制系统，其特征是，所述还包括交流电网端，其通过AC/DC转换器电连接于母线输出侧。
  12. 如权利要求11所述的直流供配电控制系统，其特征是，所述在线式发电单元包括光伏发电单元、风力发电单元中的至少一种，所述光伏发电单元直接电连接于或通过DC/DC转换器电连接于所述母线输出侧，所述风力发电单元直接电连接于或通过AC/DC转换器电连接于所述母线输出侧。
  13. 如权利要求12所述的直流供配电控制系统，其中：
    在线式光伏发电单元直接发出48V电压输入到母线输出侧或者通过DC/DC转换器将其他电压值转换为48V输入到母线输出侧；
    在线式风力发电单元通过AC/DC转换器将交流电转换为48V的直流电输入到母线输出侧。
  14. 一种直流微数据中心，其特征是，其采用权利要求1-8任一项所述直流供配电控制方法提供电能。
  15. 一种直流微数据中心，其特征是，其采用权利要求9-13任一项所述直流供配电控制系统提供电能。
  16. 一种直流微数据中心，包括权利要求9-13任一项所述直流供配电控制系统。
PCT/CN2021/105439 2020-07-14 2021-07-09 直流供配电控制方法、系统及直流微数据中心 Ceased WO2022012427A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202010677134.2 2020-07-14
CN202010677134.2A CN111817334A (zh) 2020-07-14 2020-07-14 直流供配电控制方法、系统及直流微数据中心

Publications (1)

Publication Number Publication Date
WO2022012427A1 true WO2022012427A1 (zh) 2022-01-20

Family

ID=72865096

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2021/105439 Ceased WO2022012427A1 (zh) 2020-07-14 2021-07-09 直流供配电控制方法、系统及直流微数据中心

Country Status (2)

Country Link
CN (1) CN111817334A (zh)
WO (1) WO2022012427A1 (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115764848A (zh) * 2023-01-09 2023-03-07 苏州浪潮智能科技有限公司 通信设备的供备电网络
CN119382057A (zh) * 2024-10-25 2025-01-28 西南交通大学 用于跨海峡铁路的交直流混联柔性供电系统及控制方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111817334A (zh) * 2020-07-14 2020-10-23 珠海格力电器股份有限公司 直流供配电控制方法、系统及直流微数据中心

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120150679A1 (en) * 2012-02-16 2012-06-14 Lazaris Spyros J Energy management system for power transmission to an intelligent electricity grid from a multi-resource renewable energy installation
CN102916481A (zh) * 2012-08-16 2013-02-06 深圳微网能源管理系统实验室有限公司 一种直流微网系统及其能量管理方法
CN104505867A (zh) * 2015-01-04 2015-04-08 南京国臣信息自动化技术有限公司 一种交直流混合微电网系统及其控制策略
CN104810822A (zh) * 2015-05-22 2015-07-29 中国电力科学研究院 一种微网双向dc/dc变化下垂系数的控制方法
CN108832635A (zh) * 2018-07-18 2018-11-16 杭州新融方科技有限公司 交直流混合微电网及其操作方法
CN110854983A (zh) * 2019-11-29 2020-02-28 国家电网有限公司 一种基于超级电容平抑直流母线电压突变的电压稳定装置及其方法
CN111817334A (zh) * 2020-07-14 2020-10-23 珠海格力电器股份有限公司 直流供配电控制方法、系统及直流微数据中心

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201562990U (zh) * 2009-12-14 2010-08-25 中国地质大学（武汉） 微机控制船用电源充电装置
CN102055368B (zh) * 2010-12-20 2013-03-27 江苏省电力公司南京供电公司 100kva微网储能双向变流器
CN102122826A (zh) * 2011-01-17 2011-07-13 中国南方电网有限责任公司电网技术研究中心 一种大容量蓄电池储能双向换流器
CN104362402B (zh) * 2014-09-19 2016-05-18 杭州浙畅电力设备有限公司 一种阶梯式恒流充放电方法
CN109217673A (zh) * 2018-11-06 2019-01-15 西安交通大学 一种储能变流器及其控制方法
CN111106404B (zh) * 2019-11-29 2023-03-03 合肥国轩高科动力能源有限公司 一种磷酸铁锂电池浮充优化方法

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120150679A1 (en) * 2012-02-16 2012-06-14 Lazaris Spyros J Energy management system for power transmission to an intelligent electricity grid from a multi-resource renewable energy installation
CN102916481A (zh) * 2012-08-16 2013-02-06 深圳微网能源管理系统实验室有限公司 一种直流微网系统及其能量管理方法
CN104505867A (zh) * 2015-01-04 2015-04-08 南京国臣信息自动化技术有限公司 一种交直流混合微电网系统及其控制策略
CN104810822A (zh) * 2015-05-22 2015-07-29 中国电力科学研究院 一种微网双向dc/dc变化下垂系数的控制方法
CN108832635A (zh) * 2018-07-18 2018-11-16 杭州新融方科技有限公司 交直流混合微电网及其操作方法
CN110854983A (zh) * 2019-11-29 2020-02-28 国家电网有限公司 一种基于超级电容平抑直流母线电压突变的电压稳定装置及其方法
CN111817334A (zh) * 2020-07-14 2020-10-23 珠海格力电器股份有限公司 直流供配电控制方法、系统及直流微数据中心

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115764848A (zh) * 2023-01-09 2023-03-07 苏州浪潮智能科技有限公司 通信设备的供备电网络
CN119382057A (zh) * 2024-10-25 2025-01-28 西南交通大学 用于跨海峡铁路的交直流混联柔性供电系统及控制方法

Also Published As

Publication number Publication date
CN111817334A (zh) 2020-10-23

Similar Documents

Publication Publication Date Title
CN102368631B (zh) 一种高效可靠的数据中心电子设备供电架构
WO2021179685A1 (zh) 直流多微电网系统及控制方法
WO2022012427A1 (zh) 直流供配电控制方法、系统及直流微数据中心
WO2020156276A1 (zh) 电源整流的方法和装置
CN113541212A (zh) 面向交直流混合供电方式的定制电力系统及其控制方法
CN115882442A (zh) 一种电源并联系统及其直流母线电压控制方法
CN103701189B (zh) 一种网络化的分布式动态均衡供电方法
CN107306031A (zh) 一种直流外送环形拓扑结构及控制方法
CN105591533B (zh) 一种pwm变流电路及包含该电路的变频器
CN112103938A (zh) 基于hvdc设备的供电架构、方法及系统
CN204464992U (zh) 一种通信基站直流远程供配电系统
CN116317079A (zh) 供电管理设备、服务器机柜及计算系统
CN118944165B (zh) 基于交直流混合母线架构的储充系统及其工作方法
CN120377212A (zh) 一种光伏储能电解一体化系统及其控制方法
CN110829584B (zh) 一种基于电池状态的不间断电源动态功率分配系统
CN113078664A (zh) 新型数据供电中心及不间断供电方法
CN103199611B (zh) 一种网络设备的电源电路
CN107645203A (zh) 储能变频器系统
CN217486214U (zh) 一种基于超级电容储能的厂用直流ups电源系统
CN117791542A (zh) 制氢控制方法、装置、系统及电子设备
CN201616703U (zh) 高压变频器控制电源回路不间断供电装置
CN214707169U (zh) 一种电源系统
CN107769211A (zh) 一种双电压等级交直流混合配用电系统
CN103715750A (zh) 下电电路、直流组合电源系统及下电控制方法
CN105529811A (zh) 光伏直流能效管理系统

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21841988

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 21841988

Country of ref document: EP

Kind code of ref document: A1