CN103904776A - Intelligent power distribution room power system - Google Patents
Intelligent power distribution room power system Download PDFInfo
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Abstract
一种智能配电房电源系统，包括AC220V供电系统、直流电供电系统、储能控制系统、视频及安防系统电源系统，本智能配电房电源系统中还包括电池管理单元、集成供电箱；电池管理单元分别给DTU、逆变器、储能控制系统及开关柜指示灯电源、通信单元供电；直流电供电系统为DC48V电池供电系统；逆变器将DC48V逆变为AC220V电压输出为集成供电箱供电；正常状态时，电池管理单元由AC220V供电，并由电池管理单元给DC48V电池组充电，当AC220V断电时，电池管理单元由DC48V电池组供电，本发明的优点在于：实现故障隔离，检修方便，保持供电系统稳定，经济实用，技术可行，具有推广价值。
An intelligent power distribution room power system, including AC220V power supply system, DC power supply system, energy storage control system, video and security system power system, the intelligent power distribution room power system also includes a battery management unit, integrated power supply box; battery management The units supply power to the DTU, inverter, energy storage control system, switch cabinet indicator light power supply, and communication unit respectively; the DC power supply system is a DC48V battery power supply system; the inverter converts DC48V into AC220V voltage output to supply power for the integrated power supply box; In normal state, the battery management unit is powered by AC220V, and the battery management unit charges the DC48V battery pack. When the AC220V power is cut off, the battery management unit is powered by the DC48V battery pack. The advantages of the present invention are: fault isolation, convenient maintenance, Keep the power supply system stable, economical and practical, technically feasible, and have promotional value.
Description
Technical field
The present invention relates to a kind of power supply technique field, especially refer to a kind of intelligent power distribution room power-supply system.
Background technology
Existing a kind of patent No. is that the Chinese utility model patent that CN201120379556.8 name is called " a kind of work T of data center equipment electric power system and backup type high-voltage DC power supply " discloses a kind of data center information technoloy equipment electric power system and backup type high-voltage DC power supply.Described system comprises backup type high-voltage DC power supply, batteries, output distribution cabinet, a row power distribution cabinet and chassis power distribution unit, and wherein, described batteries is connected with the direct current output bus of backup type high-voltage DC power supply; Described backup type high-voltage DC power supply input termination three-phase alternating current, output through output distribution cabinet, first cabinet of each row and chassis power distribution unit for information technoloy equipment provides power supply, described backup type high-voltage DC power supply comprises: AC-DC conversion switch, and for realizing the conversion of three-phase alternating current output and the output of batteries high-voltage DC power supply.Have advantages of that efficiency is high, reliability is high, compatibility is strong and invest little.But, this device lack effective Fault Isolation means, and service restoration function a little less than, as run into larger problem, need long period maintenance, may there is the loss of power accident; In addition, this device is applicable to data center's information technoloy equipment power supply, the power requirement in intelligent power distribution room has its particularity, comprises that power stage requirement, polytype electric pressure require, meet many energy storage motors energy storage simultaneously requirement etc., and this device also requires further improvement on technology realizes.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of power-off to isolate for power distribution room for above-mentioned prior art present situation, and maintenance is convenient, maintains long period power supply when power failure, guarantees the intelligent power distribution room power-supply system of electric power system normal operation.
The present invention solves the problems of the technologies described above adopted technical scheme: this intelligent power distribution room power-supply system, comprise AC220V electric power system, DC power supply system, energy storage control system, video and safety-protection system power-supply system, it is characterized in that: in this intelligent power distribution room power-supply system, also comprise battery management unit, integrated consumer unit;
One, described battery management unit is given respectively DTU, DC48V/AC220V inverter, energy storage control system and switch cubicle pilot lamp power, communication unit power supply;
Two, described DC power supply system is DC48V battery power supply system;
Three, described DC48V/AC220V inverter is integrated consumer unit power supply, and described DC48V/AC220V inverter refers to that by DC48V inversion be AC220V Voltage-output;
Four, described video comprises DVR video system, video camera probe, and safety-protection system comprises ip voice phone, smoke sensing equipment, flood control warning device, long-range light control device, gate control system; Described integrated consumer unit is given respectively DVR video system, video camera probe, ip voice phone, smoke sensing equipment, flood control warning device, long-range light control device, gate control system power supply;
Five,, when normal condition, battery management unit is powered by AC220V, and by battery management unit to DC48V batteries charging, in the time of AC220V power-off, battery management unit is battery-powered by DC48V;
Six, described DTU is distribution power automation terminal equipment, and described DC refers to direct current, and described AC refers to alternating current, and described V represents the unit volt of voltage.
As improvement, the maximum power of described battery management unit is chosen as 1500W, and the parameter of battery management unit and functional configuration are:
As improvement, the parameter request of described inverter is:
As improvement, the structure of described energy storage control system comprises:
One, in each switch cubicle tank circuit, install the time relay and D.C. contactor additional, by the time relay of every switch cubicle is carried out to delay time setting, make energy storage motor in each switch cubicle carry out sequence starting through certain time-delay;
Two, time relay coil detects after this cabinet control power supply DC48V, and after time delay a period of time, normal opened contact closure, drives D.C. contactor, is connected tank circuit and is kept energy storage motor startup work by the main contacts of D.C. contactor;
Three, energy storage motor operate time is 12 seconds, and First is set as 15 seconds, and n platform is set as 15 and takes advantage of n second, and when controlling power supply DC48V dead electricity, the time relay is instantaneous to be returned, and the contact of D.C. contactor cuts off tank circuit and keeps.
As improvement, in described DC48V battery power supply system, battery adopts sealed non-maintenance lead-acid accumulator cell, and power distribution room or switching battery specification are 12V/65Ah or 12V/100Ah, and 4 batteries are made as to one group, and series connection provides 48V voltage.
As improvement, described DTU working power adopts DC48V, and the AC220V being provided by PT powers to battery management unit, and battery management unit provides the DC power supply that is not less than 48V/30A that DTU working power is provided.Described PT power cabinet refers to that mutual induction of voltage sees device.
Compared with prior art, the present invention is using AC220V electric power system as electric power source, and DC power supply system is power-supply system in support, and will be integrated to backup power system and distribution terminal (DTU); Backup power system comprises battery management unit, battery pack, inverter, and they are integrated in same rack with distribution terminal and other watch-dog.The advantage of this structure is: when normal power supply, inputted by external power source, control and the operating power of switch is provided through battery management unit, pass through inverter simultaneously, give the power supplies such as other power consumption equipments such as the network equipment, video.External power source is given batteries charging simultaneously; When external power source dead electricity, by battery management unit automatic connection, give switch loop and the power supply of other power consumption equipments by battery pack; Power consumption equipment is all to power through battery management unit, even under power failure state, all devices can normally move within a certain period of time; Power management is unified, can facilitate outgoing management.When electric fault, can isolate maintenance, not affect bulk supply, as when the situation such as unexpected power-off occurs occurring, can react rapidly and be switched to battery-poweredly, keeping system power supply is steadily, and power-on time is long under powering-off state, for the operations such as maintain and replace reserve time enough.Battery management unit is provided with fault alarm function; the convenient hidden danger of getting rid of; guarantee that system is normal, there is Charge Management function, avoid parameter drift; avoid each charging module to interfere with each other; also have electric discharge management function, in the time that battery is put at certain under-voltage, module is carried out equal floating charge conversion; with protection battery, further guarantee that system normally moves.
Brief description of the drawings
Fig. 1 is the structural representation of the embodiment of the present invention;
Fig. 2 is general principle figure in Fig. 1;
Fig. 3 is the circuit diagram of energy storage control section in Fig. 1;
Fig. 4 is the schematic diagram of the configuration of this system in the time of practical application.
Embodiment
Below in conjunction with accompanying drawing, embodiment is described in further detail the present invention.
As shown in Figures 1 to 4, the intelligent power distribution room power-supply system of the present embodiment, comprise AC220V electric power system, DC power supply system, energy storage control system, video and safety-protection system power-supply system, in this intelligent power distribution room power-supply system, also comprise battery management unit, integrated consumer unit;
One, described battery management unit is given respectively DTU, DC48V/AC220V inverter, energy storage control system and switch cubicle pilot lamp power, communication unit power supply;
Two, described DC power supply system is DC48V battery power supply system;
Three, described DC48V/AC220V inverter is integrated consumer unit power supply, and described DC48V/AC220V inverter refers to that by DC48V inversion be AC220V Voltage-output;
Four, described video comprises DVR video system, video camera probe, and safety-protection system comprises ip voice phone, smoke sensing equipment, flood control warning device, long-range light control device, gate control system; Described integrated consumer unit is given respectively DVR video system, video camera probe, ip voice phone, smoke sensing equipment, flood control warning device, long-range light control device, gate control system power supply;
Five,, when normal condition, battery management unit is powered by AC220V, and by battery management unit to DC48V batteries charging, in the time of AC220V power-off, battery management unit is battery-powered by DC48V;
Six, described DTU is distribution power automation terminal equipment, and described DC refers to direct current, and described AC refers to alternating current, and described V represents the unit volt of voltage.
Below the present invention is described in further detail, this intelligent power distribution room power-supply system comprises AC220V electric power system, DC power supply system, and video and defence system power-supply system etc., also comprise battery management unit, integrated consumer unit; Described battery management unit is given respectively DTU, inverter, energy storage controller and switch cubicle pilot lamp power, communication unit power supply; Described DC power supply system is DC48V battery power supply system; Described DC48V/AC220V inverter is integrated consumer unit power supply, and described DC48V/AC220V inverter refers to that by DC48V inversion be AC220V Voltage-output; Described video comprises DVR video system, video camera probe, and defence system comprises ip voice phone, smoke sensing equipment, flood control warning device, long-range light control device, door status switch (belonging to gate control system, as follows); Described integrated consumer unit is given respectively DVR video system, spherical video probe, ip voice phone, smoke sensing equipment, flood control warning device, long-range light control device, door status switch power supply; When normal condition, battery management unit is powered by AC220V, and by battery management unit to DC48V batteries charging, in the time of AC220V power-off, battery management unit is battery-powered by DC48V; Described DTU is distribution power automation terminal equipment, and described DC refers to direct current, and described AC refers to alternating current, and described V represents the unit volt of voltage.The maximum power of described battery management unit is preferably 1500W, and the parameter of battery management unit and functional configuration are:
The parameter request of described inverter is:
The structure of described energy storage controller comprises:
One, in each switch cubicle tank circuit, install the time relay and D.C. contactor additional, by the time relay of every switch cubicle is carried out to delay time setting, make energy storage motor in each switch cubicle carry out sequence starting through certain time-delay;
Two, time relay coil detects after this cabinet control power supply DC48V, and after time delay a period of time, normal opened contact closure, drives D.C. contactor, is connected tank circuit and is kept energy storage motor startup work by the main contacts of D.C. contactor;
Three, energy storage motor operate time is 12 seconds, and First is set as 15 seconds, and n platform is set as 15 and takes advantage of n second, and when controlling power supply DC48V dead electricity, the time relay is instantaneous to be returned, and the contact of D.C. contactor cuts off tank circuit and keeps.In described DC48V battery power supply system, battery adopts sealed non-maintenance lead-acid accumulator cell, and general battery power distribution room specification is 12V/65Ah, and large-scale power distribution room and switching station specification battery are 12V/100Ah, and 4 joints are established to battery is one group, and series connection provides 48V voltage.Described DTU working power adopts DC48V, and the AC220V being provided by PT powers to battery management unit, and battery management unit provides the DC power supply that is not less than 48V/30A that DTU working power is provided.
Operation principle: all power consumption equipments are all to power through battery management unit, even under power failure state, all devices can normally move within a certain period of time.
(1) alternating current 220V electric power system
When normal power supply, the AC220V being provided by PT, as working power, provides the working power of smart machine on the one hand, charges a battery simultaneously.
(2) direct current 48V electric power system
When normal power supply, the AC220V being provided by PT powers to battery management unit, and battery management unit provides the DC power supply that is not less than 48V/30A DTU working power to be provided, to control power supply, accumulation power supply, switch cubicle pilot lamp power, communication power supply etc.
When PT dead electricity, powered by battery management unit by battery, battery management unit provides the DC power supply that is not less than 48V/30A terminal operating power supply to be provided, to control power supply, accumulation power supply, switch cubicle pilot lamp power, communication power supply etc.
(3) video and safety-protection system power-supply system
By the output of DC48V/AC220V inverter, AC220V provides DVR working power, integrated consumer unit input power, ensures under power failure condition the normal work of video and safety-protection system.
Integrated consumer unit is the safety device power supplies such as video ball machine, gate control system, water-immersion system, smoke detector system.
This system engineering applicable cases explanation:
This intelligent power distribution room power-supply system can be used widely in public switching station, power distribution room user engineering, as shown in Figure 4, smart machine comprises optical fiber EPON equipment, distribution power automation terminal (DTU), transformer optimized operating device, video tandem device (DVR) and other security devices (intelligent sphere machine, ip voice phone, smoke sensing equipment, flood control warning device, long-range light control device etc.), and they and power-supply system are integrated in a comprehensively monitoring rack.
Power-supply system battery pack is pressed DC48V/100Ah configuration, provide AC220V power supply by voltage transformer (press and become cabinet), be that distribution power automation terminal (DTU), transformer optimized operating device provide DC48V working power and breaker operator power supply, signal designation power supply by power-supply system, provide other security devices (intelligent sphere machine, ip voice phone, smoke sensing equipment, flood control warning device, long-range light control device etc.) various types of working powers by integrated consumer unit.Storage battery assembly 4 saves 12V battery, and series connection provides DC48V Voltage-output.Working power and the breaker operator power supply of distribution power automation terminal (DTU) and communicator (as optical fiber ONU).DC48V Voltage-output is simultaneously as the input voltage of inverter, and inverter output AC220V provides input for integrated consumer unit.The power supply of other security devices (intelligent sphere machine, ip voice phone, smoke sensing equipment, flood control warning device, long-range light control device etc.) is provided by integrated consumer unit.The intelligent power distribution room of the another kind of type in Zhoushan Region, circuit breaker uses DC110V operating voltage, at this moment need on original power-supply system allocation plan, make some changes:
(1) storage battery assembly 9 saves 12V battery, and series connection provides 108V Voltage-output.Battery management unit provides the main output of DC110V, the direct input voltage as breaker operator power supply and inverter;
(2) add and join the voltage reduction module of DC110V to DC48V, the working power of distribution power automation terminal (DTU) and communicator (as optical fiber ONU) is provided;
(3) inverter of employing DC110V/AC220V type.
Become distribution engineering as example taking community, the village, the imperial Jingshan mountain of Zhoushan Putuo branch company of Hai Jing real estate Co.,Ltd: in this project, establish one of power distribution room, inside establish high-voltage board, power distribution automation cabinet; High-voltage board adopts single bus scheme mode, adopts indoor single-row layout, two road inlet wires, the using and the reserved, three tunnel outlets, voltage transformer cabinet one side; Power distribution room is established two SCB10-630KVA transformers, and low pressure adopts single bus scheme mode, establishes contact cabinet; High-voltage ring main unit adopts XGN66A ring main unit series of products, and low-voltage distribution cabinet adopts GCK series of products.Breaker operator power supply, energy storage motor power supply are DC48V, and power supply is taken from DTU cabinet.Power distribution automation requirement, realizes remote signalling (YX), remote measurement (YC), remote control (YK) three distant functions (SCADA), and realizes video and the long-range comprehensively monitoring function of security protection.This project power distribution room configures special voltage transformer (G6:PT. lightning arrester cabinet), from 10kV system power taking step-down, for the maximum power output of AC220V/3000VA is provided in standing.Switch cubicle inner breaker control power supply, operating power, energy storage motor power supply, signal power source, all adopt DC48V electric pressure, operating mechanism and the auxiliary device of configuration relevant voltage grade.Backup power system, adopts intelligent backup power system scheme, and backup power system is obtained AC220V power supply by voltage transformer and inputted.In the time that AC220V power work is normal, by rectification module, externally export DC48V power supply, the management simultaneously batteries being discharged and recharged by battery management unit; In the time of AC220V dead electricity, automatically drop into back-up source batteries by battery management unit, realize external DC48V stable power-supplying within a certain period of time.
Setting battery capacity is 65Ah, is specifically calculated as follows.
One, in 1 hour, can normally grasp to do verification
Needed gross power:
The electric current of corresponding 48V battery is 775VA/48V=16.15A.
The power consumption of considering various brand components and parts has 20% difference, and the capacity of battery should at least be chosen and be greater than 20Ah.
Two, in 8 hours, can normally monitor verification
Because the energy storage motor operating time is only 15 seconds, the operating time of motor-operating mechanism only has 0.5 second, and only requires that operation once, exerts an influence hardly for battery capacity after having a power failure, and therefore remaining stable capacity is:
The electric current of corresponding 48V battery is 290VA/48V=6.04A.
Consider the accident causing except the force majeure such as earthquake, flood, general equal can the reparation in 8 hours of other equipment fault, so determine that according to the steady load of 8 hours the capacity of battery should be greater than 6.04 × 8, is greater than 48Ah.
The power consumption of considering again various brand components and parts has error and the aging capacity loss bringing that in fact 20% difference and battery capacity exist, the actual 65Ah that is chosen for of battery capacity.According to the technical requirement of intelligent backup power system, in the time carrying out Secondary Design, take into full account the requirement of equipment configuration, electric interfaces aspect.
Intelligent power distribution room power-supply system provides working power, switching manipulation power supply and motor accumulation power supply, switch cubicle pilot lamp power, the AC220V of whole smart machines to debug power supply, in PT dead electricity situation, can ensure that operation is more than 8 hours, the breaking-closing operating that ensures whole switch cubicles at least 1 time, switch cubicle indicator light is normally indicated.
Energy storage control system: refer to while meeting the energy storage simultaneously of many energy storage motors, ensure energy storage motor in turn energy storage to be unlikely to the power of needs excessive and burn the control system of power-supply system.The abbreviation of ip voice phone: IP:InternetProtocoi, ip voice phone is the telephone service that the network technology content that specifies by IP Internet Protocol is opened, translator of Chinese is the networking telephone or Internet Protocol telephone, carries out real-time voice transfer service exactly in simple terms by Internet net.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106301000A (en) * | 2016-08-11 | 2017-01-04 | 珠海格力电器股份有限公司 | Converter and control unit thereof |
| CN110912497A (en) * | 2019-10-31 | 2020-03-24 | 河南华盛隆源电气有限公司 | Control method and device for energy storage motor of circuit breaker |
| CN113746313A (en) * | 2021-09-29 | 2021-12-03 | 傲普(上海)新能源有限公司 | Method for controlling power-on and power-off of switching power supply in energy storage high-voltage box |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106301000A (en) * | 2016-08-11 | 2017-01-04 | 珠海格力电器股份有限公司 | Converter and control unit thereof |
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| CN110912497A (en) * | 2019-10-31 | 2020-03-24 | 河南华盛隆源电气有限公司 | Control method and device for energy storage motor of circuit breaker |
| CN110912497B (en) * | 2019-10-31 | 2022-02-22 | 河南华盛隆源电气有限公司 | Control method and device for energy storage motor of circuit breaker |
| CN113746313A (en) * | 2021-09-29 | 2021-12-03 | 傲普(上海)新能源有限公司 | Method for controlling power-on and power-off of switching power supply in energy storage high-voltage box |
| CN113746313B (en) * | 2021-09-29 | 2023-03-24 | 傲普(上海)新能源有限公司 | Method for controlling power-on and power-off of switching power supply in energy storage high-voltage box |
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Application publication date: 20140702 |