CN103346612B - 336VDC DC UPS system and method for supplying power to - Google Patents
336VDC DC UPS system and method for supplying power to Download PDFInfo
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- CN103346612B CN103346612B CN201310255861.XA CN201310255861A CN103346612B CN 103346612 B CN103346612 B CN 103346612B CN 201310255861 A CN201310255861 A CN 201310255861A CN 103346612 B CN103346612 B CN 103346612B
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Abstract
The present invention proposes a kind of 336VDC DC UPS system and method for supplying power to, adopt 24 arteries and veins main vertoro mains ac power supply to be converted to the DC power supply of 336VDC as the main power supply of system; The charge maintenance of the accurate charger of HF switch to system backup battery pack of system backs up power supply as system emergency; High-speed DC static-switch module, according to civil power quality condition, determines that power load switches by civil power main circuit power supply or by the high speed of emergency backup Power supply; Uninterrupted supply of electric power can be provided for the IT communication equipment of former three-phase alternating-current powered, switching equipment, computer instrument control device and lighting apparatus etc., backup battery group of the present invention is in charge maintenance state at ordinary times, only enable when system emergency is powered, add the useful life of storage battery, improve the reliability of system, fault-tolerance, the main vertoro of 24 arteries and veins greatly can reduce the harmonic current injection of system to grid side, meets relevant national standard.
Description
Technical field
The present invention relates to power technique fields, particularly relate to a kind of 336VDC DC UPS system and method for supplying power to.
Background technology
Due to the distinctive shortcoming of UPS self, determine the safe power supply and important automation instrument and DCS that cannot ensure telecommunication system completely, the guarantee requirement of SIS, its accident that faults itself brings to system cloud gray model comparatively frequently emerges in an endless stream, and brings many negative effects and economic loss to corporate social.
In the middle of currently available technology scheme, typical 336V DC power-supply system as shown in Figure 1, comprises the high-voltage direct current switch power supply 101 of n parallel connection, converts the AC power of input to high-voltage DC power supply; High voltage direct current switchboard 102, integrate and distribute high-voltage DC power supply, using high-voltage direct current switch power supply 101 and storage battery 103 as input, positive and negative polarities distribute respectively by fuse, output to the comprehensive pallet high voltage direct current control unit 104 installing information technoloy equipment 105; Storage battery 103, when AC power is normal, carries out equal floating charge by high-voltage direct current switch power supply 101, when AC power failure, provides electric energy from trend information technoloy equipment, keeps information technoloy equipment to power uninterruptedly; Comprehensive pallet high voltage direct current control unit 104, is connected with each information technoloy equipment 105 needing in frame to power, as information technoloy equipment 105 power supply input switching control device and overload protection arrangement.
But the technical characteristics of this kind of technical scheme is that DC distributor 102 and storage battery 103 adopt parallel-connection structure, and therefore the program also exists following defect:
1. high-voltage direct current switch power supply 101 is in order to ensure the equal float charge voltage of plurality of groups of storage batteries 103, needs to use complicated control and management function, not only increases system burden, and greatly reduces the fault-tolerance of system.
2. high-voltage direct current switch power supply 101 not only needs when civil power is normal to bear the task to information technoloy equipment load supplying, but also will charge to storage battery 103 simultaneously and safeguard, greatly reduces the useful life of battery, reduces the reliability of system
Summary of the invention
In order to solve the problem, the object of this invention is to provide a kind of 336VDC DC UPS system, not only extend the useful life of storage battery, improve the reliability of system, fault-tolerance, and meet the national standard of net side technical indicator, and current existing three-phase output AC uninterruptible power system (UPS) can be replaced.
This 336VDC DC UPS system, the high-voltage ac power for being inputted by civil power converts the direct current that nominal voltage is 336VDC to, and the IT inputted for three-phase alternating current and communications equipment room similar devices are powered, and it is characterized in that, comprising:
Main vertoro, the three-phase alternating-current supply for being inputted by civil power converts the direct current of 336VDC to;
The accurate charger of HF switch, be connected with backup battery group, the direct current energy that the high-voltage ac power for being inputted by civil power converts 336VDC to is stored in the middle of backup battery group, as system backup power supply;
High-speed DC static switch, as the redundancy link bridge of mains-supplied power supply and backup battery, when 336VDC main power source is powered, High-speed DC static switch blocks, and main loop is the mains-supplied after Transformer Rectifier.When commercial power supply breaks down, system loading is switched to backup battery through High-speed DC static switch, ensures that the power load of connecting system can continual operation.
Described main vertoro adopts the rectifier of 24 pulse waves.
Described High-speed DC static switch is connected with control circuit, control circuit Real-Time Monitoring mains input voltage and the direct voltage after Transformer Rectifier.
The battery maintenance of the accurate charger of HF switch comprising at least N+1 redundant configuration power supply in support.
When High-speed DC static switch shows triggering, system power supply transfer is switched to backup battery.The accurate charger dormancy of HF switch simultaneously.
The present invention also comprises the DC uninterrupted method of supplying power to of a kind of 336VDC, and the method comprises the following steps:
A. high-voltage ac power one tunnel that civil power inputs is converted to the direct current of 336VDC and carries out harmonic wave rectification process, after process, input major loop is powered, and the direct current that a road converts 336VDC to is stored in backup battery group;
B. detect main circuit voltage, when major loop low-voltage being detected, being switched to backup battery group and powering and the charging stopping backup battery group, when detecting that main circuit voltage recovers normal, main loop reverts to the mains-supplied after Transformer Rectifier.
Described harmonic wave rectification process adopts the harmonic wave rectification technology of at least 24 pulses, reduces harmonic current injection electrical network.
Described backup battery group comprises N+1 backup battery as redundancy.
And adopting High-speed DC static switch, described High-speed DC static switch can switch at a high speed major loop and forward backup battery to, and behind city power recovery, static switch can block in time.
A kind of novel 336VDC Industrial Frequency Transformer DC UPS system provided by the invention and method of supplying power to, adopt 24 arteries and veins main vertoro mains ac power supply to be converted to the DC power supply of 336VDC as the main power supply of system; The accurate charger of the HF switch of system to the charge maintenance of system backup battery pack as system emergency backup battery, High-speed DC static switchgear, according to civil power quality condition, determines that power load switches by civil power main circuit power supply or by the high speed of emergency backup Power supply; Uninterrupted supply of electric power can be provided for the IT communication equipment of former three-phase alternating-current powered, switching equipment, computer instrument control device and lighting apparatus etc., backup battery group of the present invention is in charge maintenance state at ordinary times, only enable when system emergency is powered, add the useful life of storage battery, improve the reliability of system, fault-tolerance, main vertoro greatly can reduce the harmonic current injection of system to grid side, meets relevant national standard.
Accompanying drawing explanation
Fig. 1 is the system structural framework figure of prior art.
Fig. 2 is system structural framework figure of the present invention.
Fig. 3 is the circuit system structure chart of the embodiment of the present invention.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly understand, describe technical scheme of the present invention in detail below in conjunction with specific embodiment accompanying drawing.
Design philosophy of the present invention is the limitation breaking through original civil power DC power-supply system, as shown in Figure 1, the civil power DC power-supply system of prior art, main circuit power supply and storage battery 103 adopt parallel-connection structure, and all storage batterys operationally need all to put into operation.High-voltage direct current switch power supply 101 should be powered for access load power consumption equipment, is difficult to accomplish to take into account again for storage battery 103 charge maintenance.Meanwhile, high-voltage direct current switch power supply 101 controls that multiple stage battery pack is carried out all, floating charge simultaneously, easily reduces battery, and the reliability of battery reduces the risk also greatly increasing back-up source and normally run.
Be illustrated in figure 2 the major technique framework of a kind of 336VDC high-voltage direct current (DC) power system provided by the invention, comprise:
Main vertoro 201, the high-voltage ac power for being inputted by civil power converts the direct current of 336VDC to.
The accurate charger 202 of HF switch, be connected with backup battery group 204, the direct current energy that the high-voltage ac power for being inputted by civil power converts 336VDC to is stored in the middle of backup battery group 204, as system backup power supply.
High-speed DC static switch 203, connect major loop and backup battery, when normally work exports the direct current of 336VDC to main vertoro 201, High-speed DC static switch 203 blocks, and major loop DC power supply is directly output as the access such as IT and communications equipment room equipment load and powers; When commercial power supply break down or main vertoro 201 non-normal working time, trigger High-speed DC static switch 203 and switch backup battery access load equipment and power, ensure that IT and communications equipment room are arranged and wait power supply uninterruptedly.
As an embodiment; Fig. 3 is circuit system structure chart of the present invention; as shown in the figure; during civil power regular supply; system directly high-voltage ac power is converted to the direct current of 336VDC by main vertoro 201 and to input into major loop be that communication equipment is powered, and system is simultaneously with surge protecting circuit 207.
The 24 arteries and veins rectifiers 206 that main transformer rectifier 201 comprises D-D/Y transformer 205 also comprise interphase reactor.Resultant distortion THD parameter can be reduced to less than 10% further, and under system power supply full load conditions, actual measurement can be less than 5%, and system effectiveness actual measurement can reach 96%, can meet completely.
The QB-H-008-2012 " 336V DC power system " of China Mobile and QB-H-007-2012 " 336V switch-type rectifier " standard, be especially better than existing civil power direct current supply technology in RELIABILITY INDEX.
As an embodiment, DC static switch 203 of the present invention adopts thyristor SCR(to call SCR in the following text) construction of switch, based on the static switch of its complexity of SCR High-speed DC static switch 203 much smaller than UPS, owing to there is no the requirements such as system synchronization, can accomplish that very high low-voltage monitoring judges and switch on-off response speed.High-speed DC static switch 203 Parallel Control circuit thing structure can also be adopted to improve system reliability.Control circuit Real-Time Monitoring mains input voltage and the direct voltage after Transformer Rectifier, when control circuit detects that low-voltage appears in major loop, trigger SCR at once, closes the accurate charger 202 of HF switch simultaneously.After city power recovery powers, trigger current cancelled by High-speed DC static switch.SCR blocks at once.The accurate charger 202 of HF switch is progressively started shooting and is recovered charging.
High-speed DC static switch 203 handoff delay time ton<0.05mS, recovery time does not do requirement.Due to the development of current large data cloud platform, Large Copacity IT and communication equipment all adopt AC three-phase AC power, the time constant that the filter capacitor of its switching power supply and inductive energy storage are fully loaded with support system all wants >0.1mS, so the switching of High-speed DC static switch 203 can meet the requirement of system uninterrupted power supply completely.
The configuration of the accurate charger 202 of HF switch and backup battery group 204 is according to N+1 principle.The number that system regulates the accurate charger 202 of HF switch to enable as required.Power when series is switched to back-up source, when backup battery group 204 is discharged darker, system is opened the accurate charger 202 of all HF switch and is charged for backup battery group 204; When back-up source is in holding state, the charging current of the accurate charger 202 of HF switch is less especially when floating charge state, and system only needs the accurate charger 202 of startup HF switch to charge for backup battery group 204; When backup battery group 204 is charged complete, namely the accurate charger 202 of HF switch quits work.In the middle of reality uses, because the out of order probability of commercial power supply is very low, the accurate charger 202 of HF switch is in standby and floating charge state and almost accounts for more than 95%, compared with prior art, considerably increases the life-span of battery.For the ease of management, the accurate charger 202 of HF switch adopts 24 hours automatic switchover dutys, breaks down and opens the accurate charger 202 of next high frequency simultaneously immediately.The accurate charger 203 of each HF switch is all connected with isolating diode, ensures the unidirectional output of charger current.Use Schottky diode isolation connection between every Battery pack group, make not interfere with each other between many Battery packs group of parallel running.
Will be understood by those skilled in the art that, when not departing from the spirit and scope of the present invention be defined by the claims, various replacement, amendment and change can be carried out in form and details.Therefore, will understand, above-described embodiment is only illustrative purpose, and is not interpreted as limitation of the present invention.
Claims (1)
1. a 336VDC DC UPS system, the high-voltage ac power for being inputted three-phase mains converts the direct current that nominal voltage is 336VDC to, for the IT of former three-phase alternating-current powered and communications equipment room equipment are powered, it is characterized in that, comprising:
Main vertoro, described main vertoro adopts the rectifier of at least 24 pulse waves, and the three-phase alternating-current supply for being inputted by civil power converts the direct current of 336VDC to;
The accurate charger of HF switch, be connected with backup battery group, the direct current energy that the high-voltage ac power for being inputted by civil power converts 336VDC to is stored in the middle of backup battery group, as system backup power supply;
High-speed DC static switch, as the redundancy link bridge of mains-supplied power supply and backup battery, when 336VDC main power source is powered, High-speed DC static switch blocks, main loop is mains-supplied after Transformer Rectifier, when commercial power supply breaks down, system loading is switched to backup battery through High-speed DC static switch, ensures the continual operation of power load energy of connecting system;
Described High-speed DC static switch is connected with control circuit, control circuit Real-Time Monitoring mains input voltage and the direct voltage after Transformer Rectifier;
At least the battery pack of the accurate charger of the HF switch of N+1 redundant configuration power supply is in support safeguarded;
When High-speed DC static switch does not trigger, the accurate charger of HF switch is in charged state;
When High-speed DC static switch triggers, system power supply transfer is switched to backup battery, the accurate charger dormancy of HF switch simultaneously;
336VDC DC UPS system work process is as follows:
A. high-voltage ac power one tunnel that civil power inputs is converted to the direct current of 336VDC and carries out harmonic wave rectification process, described harmonic wave rectification process adopts the harmonic wave rectification technology of at least 24 pulses, after process, input major loop is powered, and the direct current that a road converts 336VDC to is stored in backup battery group;
B. detect main circuit voltage, when major loop low-voltage being detected, being switched to backup battery group and powering and the charging stopping backup battery group, when detecting that main circuit voltage recovers normal, main loop reverts to the mains-supplied after Transformer Rectifier.
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| CN201310255861.XA CN103346612B (en) | 2013-06-25 | 2013-06-25 | 336VDC DC UPS system and method for supplying power to |
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| CN201310255861.XA CN103346612B (en) | 2013-06-25 | 2013-06-25 | 336VDC DC UPS system and method for supplying power to |
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| CN107306050A (en) * | 2016-04-20 | 2017-10-31 | 上海驿都通信科技有限公司 | Distributed DC power system |
| CN108173266A (en) * | 2018-01-25 | 2018-06-15 | 北京航天发射技术研究所 | A kind of DC uninterrupted electric power system and method for supplying power to |
| CN110933346A (en) * | 2019-11-26 | 2020-03-27 | 广州长嘉电子有限公司 | Television power supply method and system based on uninterruptible power supply |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102801204A (en) * | 2012-08-31 | 2012-11-28 | 王良根 | 240V high-voltage direct current power supply system and method |
| CN103065780A (en) * | 2013-01-28 | 2013-04-24 | 尤大千 | Three-phase 24 pulse wave double-extended-triangle output winding phase-shifting rectifier transformer |
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| JP2003116233A (en) * | 2001-10-05 | 2003-04-18 | Fuji Electric Co Ltd | Uninterruptible power supply unit |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102801204A (en) * | 2012-08-31 | 2012-11-28 | 王良根 | 240V high-voltage direct current power supply system and method |
| CN103065780A (en) * | 2013-01-28 | 2013-04-24 | 尤大千 | Three-phase 24 pulse wave double-extended-triangle output winding phase-shifting rectifier transformer |
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