CN102694658A - System and method for direct-current remote power supply - Google Patents
System and method for direct-current remote power supply Download PDFInfo
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- CN102694658A CN102694658A CN2012101496240A CN201210149624A CN102694658A CN 102694658 A CN102694658 A CN 102694658A CN 2012101496240 A CN2012101496240 A CN 2012101496240A CN 201210149624 A CN201210149624 A CN 201210149624A CN 102694658 A CN102694658 A CN 102694658A
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Abstract
The invention relates to a system for direct-current remote power supply. The system comprises a local end portion, a remote end portion, a transmission medium and a control portion. The local end portion is used for receiving mains power supply input and comprises one or more local end power supply units and a storage battery pack, wherein the local end power supply units are used for providing direct-current power output for remote end devices respectively, and the storage battery pack is used for providing or compensating the direct-current power output. The remote end portion is used for receiving the direct-current power output outputted by the local end portion and providing load power for one or more communication devices of the remote end portion. The transmission medium is used for transmitting the direct-current power output of the local end portion to the remote end portion. The control portion is used for determining the direct-current power output of the one or more local end power supply units to enable the direct-current power output to adapt to power demands of the one or more communication devices of the remote end portion, and thereby direct-current power output provided by the storage battery pack can be reduced. In addition, the invention further relates to a method for direct-current remote power supply.
Description
Technical field
The present invention relates to be used for the system and method for the power supply management of communication power supply.Further, the present invention relates to provide the device and the system of remote power feeding for communication base station.
Background technology
Along with the development of mobile communication technology, the distributed networking of communication equipment has become main networking mode.Thus, the security and stability to communication power supply has also proposed requirement.At present, the power supply that is used for various types of communication equipment mainly contains 2 kinds: direct current 48V power supply and alternating current 220V power supply.
Wherein, 48V power-supply system the most commonly used has had more perfect configuration mode: civil power disposes lightning protection unit, communication power supply, jumbo 48V batteries etc. after introducing.This 48V powersupply system existing questions is, to the communication equipment power supply of distributed networking the time, owing to receive the limitation of voltage, and the distance limited of supply line, thus can not carry out remote power-feeding.Thus, need to install a large amount of 48V power-supply devices additional at the end of network, this has increased extensive works such as electric power introducing, project installation, plant maintenance, battery altering, and makes the network operation unstable.
For communication equipment, generally adopt the form of small-sized UPS power supply by the power supply of 220V power-supply system.Wherein, said UPS be contain energy storage device, be the uninterrupted power supply of the constant voltage constant frequency of chief component with the inverter.It is mainly used in continual supply of electric power to power electronic equipment is provided.When civil power input just often, UPS is supplied to load to use after with the civil power voltage stabilizing, the UPS of this moment is exactly an electric main pressurizer, it also charges to self-contained battery simultaneously; When civil power interrupted (accident interruption), UPS was immediately with the electric energy of self-contained battery, and the method through the inversion conversion continues supply 220V alternating current to load, made load keep operate as normal and protected load not to be damaged.The small-sized ups system that uses at present, generally have following problem: (1) is generally the UPS unit operation, does not have redundant configuration, in case UPS damages, whole system possibly collapsed; (2) every UPS must dispose batteries separately; Existing UPS (2KVA) the battery joint number of using is generally the 6-8 joint; And other equipment generally use 48V input power supply, and other need the equipment of 48V power supply to insert later on, and institute distribution pond is generally the common 3-5 12V battery of designed life; Life time is short, and maintenance workload is big; (3) electric pressure of UPS battery can't realize the closely direct current 48V power reguirements of base station, and the system distribution of making is complicated more.
To above problem, the system of the high direct voltage remote power feeding of developing has been arranged.Shown in Fig. 1, shown in system comprise: 1) local side: local side apparatus is the core of whole remote power feeding system, and it is isolated the 48V direct voltage and boosts to 250V-410V direct voltage (adjustable); 2) far-end: remote equipment is transformed into stable direct current 48V voltage with the high direct voltage of input, is other power devices; 3) transmission line: the positive and negative electrode of local side output is connected to the corresponding copper core of composite cable.
Above-mentioned direct current remote electric power system is derived from original Personal Handyphone System system remote supply power mode; Formulate according to original " communication equipment is with direct current Remote Power Supply system " YD/T1817-2008 as the one of which, and be not suitable for the employing power cable and come the construction of line, the load of separate unit communication equipment construction scene greater than 100W.In addition, the problem of existence comprises: present direct current remote power feeding generally adopts a cover local side apparatus to hang 8-10 remote equipment down; Also can't realize the many complete equipments of local side or system's centrally connected power supply and N+1 formula redundancy backup; Can not realize the parallel operation dilatation, the network capacity extension is from now on formed restriction etc.
Thus, need a kind of monitoring unit that is used for remote power feeding of design, in order to improve the stability and the life-span of system.In addition, for improving the power supply supportability in the distributed networking application scenarios, improve power-source maintenance efficient, reduce operating cost, on original communication power supply electric pressure basis, additional structure satisfies the 280V direct current remote electric power system of lift-launch demand.
Summary of the invention
According to an aspect of the present invention; A kind of long-range DC power-supply system is provided, is used for power being provided, comprising: the local side part mobile communication equipment; Be positioned at central machine room or base station; Reception mains supply input, and it comprises one or more power supply units, to the equipment that is positioned at far-end direct current power output to be provided respectively; Wherein,, also comprise battery module in said local side part, in order in said city electrical power input end or provide or remedy when not enough said direct current power output; Distal portions is positioned at and said local side partial distance position far away, receives the direct current power output that said local side is partly exported, and to one or more communicators that it comprises bearing power is provided; Transmission medium between said local side part and said distal portions, is transferred to said distal portions with the direct current power output partly of said local side; And control section; Signal based on the representative load size that detects from said distal portions; Confirm the direct current power output of said one or more power supply units of said local side part; Make the said direct current power output and the power demand of said one or more communicators of said distal portions adapt, reduce the direct current power output that provides by said battery module thus.
According to one embodiment of present invention, in the described long-range DC power-supply system, said local side part also comprises: the AC/DC conversion equipment, and the alternating current that the outside is imported converts direct current into; Wherein, the local side part also comprises: increasing apparatus boosts to required 280V with the said direct current power output of said one or more power supply unit.
According to another embodiment of the invention, in the described long-range DC power-supply system, said distal portions also comprises: dropping equipment, with the direct current power output buck that receives to required 48V; Power distribution unit offers said one or more communicator respectively with the power after the step-down; Wireless signal is perhaps transmitted in said communicator emission; Detecting unit detect the total load power of said one or more communicators of said distal portions, and on behalf of the signal of said total load power, it will transfer to said control section.
According to another embodiment of the invention, in the described long-range DC power-supply system, said local side part also comprises: the local side administration module, receive the control signal of said control section, and control the direct current power output of said one or more power supply units.
According to another embodiment of the invention, in the described long-range DC power-supply system, the said one or more power supply units in the said local side part, each partly provides direct current power output through transmission medium to the local side of correspondence.Alternatively, said control section comprises one or more general or special microprocessors; And/or said one or more communicator is a signal projector.
According to another aspect of the present invention; A kind of long-range direct current supply method that is used for mobile communication equipment is provided; Be used for power being provided to mobile communication equipment; This method may further comprise the steps: in the local side part, provide via the direct current power output of mains supply conversion and the direct current power output of being derived by battery module; Utilize transmission medium that said direct current power output is transferred to distal portions; At distal portions, said direct current power output is offered mobile communication equipment; Be characterised in that; Also comprise: measure power demand at the mobile communication equipment of distal portions; And the signal of the said power demand of generation representative; Control section is confirmed the direct current power output via the mains supply conversion partly of said local side according to this signal, to reduce the direct current power output that is provided by storage battery.
According to another embodiment of the invention, this method also comprises: in the local side part, mains supply is converted to predetermined direct voltage and offers one or more power supply units respectively, each arrives corresponding distal portions through some transmission medium said power supply unit; And/or, the direct voltage that receives is depressurized to required voltage, and offers one or more communicators at distal portions; Wireless signal is perhaps transmitted in said communicator emission.
According to another embodiment of the invention, this method also comprises: the power demand at the mobile communication equipment of distal portions of wherein said measurement receives the influence of the telephone traffic of one or more communicators.
According to another embodiment of the invention, this method also comprises: wherein represent the signal of the overall power requirement of distal portions, calculated by the total current demand of each equipment of far-end.
Particularly, detecting the load current that is positioned at far-end changes.Wherein, Descending power and current constant no change; How much up electric current and power change with number of users; This telephone traffic detection technique that can be used to realize communicating by letter with 3G/2GRRU and wireless trunk amplifier and the up power amplifier current changing rate of repeater equipment; Its core is utilized when line output increase value and number of users change on level of total power or the indoor distribution apparatus of line output on the indoor distribution apparatus, and the principle that equipment operation gross power and electric current change adopts processor to detect this rate of change; When 3G/2GRRU and wireless trunk amplifier and direct end uplink output module electric current with power variation rate surpasses or during less than setting, single-chip microcomputer sends the direct current power output that provides via line voltage that local side is regulated in instruction.
The present invention is based on such design: in to the mobile communication equipment power supply process, the telephone traffic of mobile communication equipment what or its variation can have influence on the power consumption of load equipment, also are its required driving power.Thus, can measure the load power output of the equipment of far-end, and confirm to export in each direct current power that supplies to flow power supply unit at local side place with the power following mode.Particularly, the dc output power of each power supply unit of local side is not a steady state value, but can follow the power demand of far-end and in setting range, change.Particularly, the dc output power that is provided by mains supply is followed the power demand of far-end load equipment.Can reduce by batteries like this provides power output as far as possible, and the state of charge of keeping batteries thus is a certain value, frequent discharge and recharge and causes its lost of life to avoid it.
Term " electric power transfer medium " refers to all cables of transferring electric power above that, particularly, can be the composite cable that comprises the copper core, perhaps other any suitable transmission mediums.Term " processor " can be a circuit of being realized certain function by software programming, or also can be custom-designed hardware or firmware.
Through system and method for the present invention, be positioned at the local side apparatus of base station or central machine room, can direct current supply be provided to the load equipment of far-end, complex device such as transformer need be provided at far-end.Simultaneously, export the power needs of following the far-end load, prolonged the useful life of battery through the power that mains-supplied is provided.In addition, a local side part can provide supply of electric power to a plurality of distal portions; Perhaps a plurality of local side parts can be to a distal portions power supply; Perhaps, a plurality of local side parts are partly supplied power to a plurality of local sides.This has also improved the fail safe and the stability of power supply.
Description of drawings
Below will combine and explain the present invention more fully with reference to accompanying drawing with preferred embodiment, wherein:
Fig. 1 is the block diagram according to the system of direct current remote power feeding of the present invention;
Fig. 2 is the structural representation of local side part among Fig. 1;
Fig. 3 is the structural representation of distal portions among Fig. 1;
Fig. 4 is the flow chart according to the method for direct current remote power feeding of the present invention;
Embodiment
As shown in Figure 1, the direct current remote electric power system 100 according to an embodiment of the invention, consist essentially of local side part 101, distal portions 102, transmission medium 103 and control section 104.
Wherein, said local side part 101 generally is positioned at base station or central machine room, inserts supply of electric power from mains supply, and high direct voltage electric power is passed through transmission cable, for example comprises the composite cable of copper core, is transferred at the distal portions than distant location.
Said distal portions 102 is positioned at distance said local side part 101 than distant location, is used for mobile communication equipment, and for example the wireless signal transmission antenna is supplied power.
Control section 104 (generally can comprise microprocessor) can be arranged at the co-located place with local side part 101 basically, perhaps is positioned at other positions alternatively, the Regional Control Center of for example more concentrating.Said control section 104 can be that cable mode or wireless mode are connected with the signal transmission of said local side part, control signal is sent to local side part 101.In addition, said control section 104 can be connected through cable mode or wireless mode with said distal portions 102, with the signal from wherein receive measuring.Control section 104 is confirmed the direct current power output of local side part 101 based on the bearing power demand of said distal portions 102.
In addition, said transmission medium can also be any other suitable electric power transfer media.
As shown in Figure 2, according to embodiments of the invention, said local side part 101 can comprise local side power supply management module 201, local side power supply unit 202
1-202
n, batteries 203 and civil power AM access module 204.
Wherein, said civil power AM access module 204 comprises the AC/DC transducer, is used for converting the electric main supply of electric power into direct current supply.AC-DC (AC/DC) transducer system parts commonly used are easy to understand and realization, so carefully do not state at this to those skilled in the art.
Said local side power supply unit 202
1-202
nBe connected through cable with batteries 203 and civil power AM access module 204, be used for therefrom obtaining the direct current power supply and power output be provided to the outside.Wherein, the effect that replenishes or cover the shortage is played in the supply of electric power of 203 pairs of civil power AM access modules 204 of said batteries, promptly quits work or electric power is provided during the electric power undersupply in said civil power AM access module 204.In addition, preferably, said local side power supply unit 202
1-202
nComprise the boosting unit (not shown), be used for voltage is risen to required high voltage (for example 280V), more externally output.
Said batteries 203 can comprise 6-8 joint secondary battery unit, so that the electric power output of 48V to be provided.Perhaps, alternatively, also can comprise the secondary battery unit of other quantity and the output voltage of other volt values is provided.
Said local side administration module 201 is managed said local side power supply unit 202 discriminably or integrally
1-202
nIn output voltage and power output on each, the direct current power output of particularly obtaining from civil power AM access module 204.Said local side administration module 201 receives control signal from described control section 104, to adjust said local side power supply unit 202
1-202
nAny one on direct current power output, the direct current power output of particularly deriving from civil power AM access module 204 is to satisfy the bearing power demand of distal portions 102.
In addition, alternatively, each above-mentioned part is like local side administration module 201, local side power supply unit 202
1-202
n, batteries 203 and civil power AM access module 204 etc. can be integrated in to a part or whole part on the physical unit according to needs are set, it can comprise above-mentioned function.
As shown in Figure 3, according to embodiments of the invention, said distal portions 102 comprises power supply receiver module 301, power divider 302, electric unit 303
1-303
n, and power detection module 304.
Wherein, said power supply receiver module 301 comprises the step-down controller (not shown), is used for converting the high direct voltage electric power supply via some transmission medium into operating voltage, like 48V or other volt value.
Said power divider 302 receives the direct current power that step-down was changed from said power supply receiver module 301, and through electric unit 303
1-303
nIt is offered a plurality of radio bearers equipment (for example antenna receiving-sending device).When the telephone traffic of radio bearers equipment or amount of information changed, its power consumption also can correspondingly change.In view of voltage is stable, so during the variable power of each load equipment, in the reflection to some extent that fails to be convened for lack of a quorum of the upstream electrical of power divider 302.Power detection module 304 can change through the electric current at detection power distributor 302 upper reaches, measures the value or the variable quantity of the power output (bearing power output) of distal portions 102, and generates corresponding representation signal M1.This signal M1 gives control section 104 through some transmission medium, and this transmission can light signal, the signal of telecommunication or wireless signal, through cable (optical fiber that for example meets optical cable) or wireless mode transmission.
Above direct current remote electric power system 100 moves through following mode.
Referring to shown in Figure 4, direct current remote power feeding method comprises the steps: according to an embodiment of the invention
S401:,,,, HVDC power supply output is provided to distal portions 102 through the electric power transfer medium by means of mains-supplied and storage battery power supply in local side part 101 based on control signal; Comprising:
S401-a: introduce alternating electromotive force from the mains-supplied system,, be converted into direct current supply through the AC/DC conversion;
S401-b: the direct current supply after will changing through one or more local side power supply units, is carried out direct current power output respectively after boosting to required voltage (like 280V).
S402: at distal portions 102; Receive said HVDC power supply output; And convert the power voltage (for example 48V) that meets the power supply needs into through step-down, and the power after this conversion offers one or more electric unit through power divider, and it provides output power to load equipment; Comprising
S402-a: utilize power detection module 304, measure power demand or its variation at the power divider upper reaches, and generate the signal M1 that represents power demand or its variation; This can realize through the value or the variation of measuring total current, because magnitude of voltage should be a stable state.
S403: control section 104, according to said signal M1, confirm said local side part 101 change the direct current power output that provides by the mains-supplied system, and generate corresponding control signal M2, return step S401.
Through system and method for the present invention, mate basically with the load power consumption of distal portions by the direct current power output that the mains-supplied system provides in the local side part, avoid storage battery to be caused the life of storage battery to descend thus by frequent discharging and recharging.
It should be noted that the present invention has been explained rather than limited to the foregoing description, and under the situation of the scope that does not break away from accompanying claims, those skilled in the art can design multiple substituting embodiment.
In claim, place any reference marker in the bracket should not be considered to limit this claim.Word " comprises " not getting rid of to exist and is different from those element or the step of listing in the claim.The word of element front " one " perhaps " one " is not got rid of and is had a plurality of this elements.The present invention can realize by means of the hardware that comprises a plurality of different elements and by means of the computer of suitably programming.In having enumerated system's claim of several means, a plurality of can specifically realization the in these devices by identical hardware branch is next.In different each other dependent claims, enumerated some measures, only this fact does not represent that the combination of these measures can not advantageously be used.
Claims (10)
1. a direct current remote electric power system (100) is used for to mobile communication equipment power being provided, and comprising:
Local side part (101) is positioned at central machine room or base station, receive the mains-supplied input, and it comprises one or more local side power supply units (202
1-202
n), to the equipment that is positioned at far-end direct current power output to be provided respectively; Wherein,, also comprise batteries (203), in order to end or to provide or remedy when not enough said direct current power output in said mains-supplied in said local side part (101);
Distal portions (102) is positioned at and said local side partial distance position far away, receives the direct current power output of said local side part (101) output, and to one or more communicators that it comprises bearing power is provided;
Transmission medium (103) is positioned between said local side part (101) and the said distal portions (102), the direct current power of said local side part (101) is exported be transferred to said distal portions (102); And
Control section (104) based on the signal (M1) of its load size of the representative that detects from said distal portions (102), is confirmed said one or more local side power supply units (202 of said local side part (101)
1-202
n) direct current power output, make the said direct current power output and the power demand of said one or more communicators of said distal portions (102) adapt, reduce the direct current power output that provides by said batteries (203) thus.
2. long-range DC power-supply system as claimed in claim 1 (100), wherein, said local side part (101) also comprises: the AC/DC conversion equipment, the alternating current that the outside is imported converts direct current into;
Wherein, local side part (101) also comprises: increasing apparatus boosts to required 280V or other volt values with the said direct current power output of said one or more power supply unit.
3. long-range DC power-supply system as claimed in claim 1 (100), wherein, said distal portions (101) also comprises:
Power supply receiver module (301), it comprises dropping equipment, is used for the direct current power output buck that receives to required 48V;
Power divider (302), with the power after the step-down through one or more electric unit (303
1-303
n) offer one or more communicators respectively; Wireless signal is perhaps transmitted in said communicator emission;
Power detection module (304) detect the total load power of said one or more communicators of said distal portions, and on behalf of the signal (M1) of said total load power, it will transfer to said control section (104).
4. long-range DC power-supply system as claimed in claim 1 (100), wherein, said local side part (101) also comprises:
Local side administration module (201), the control signal (M2) of reception control section (101) is controlled said one or more local side power supply unit (202
1-202
n) direct current power output.
5. long-range DC power-supply system as claimed in claim 1 (100), wherein, said one or more local side power supply units (202 of said local side part (101)
1-202
n), each provides direct current power output through transmission medium (103) to the local side part (102) of correspondence.
6. long-range DC power-supply system as claimed in claim 1 (100), wherein, said control section (104) comprises one or more general or special microprocessors; And/or
Said one or more communicator is signal transceiver or reflector.
7. a direct current remote power feeding method that is used for mobile communication equipment is used for to mobile communication equipment power being provided, and this method may further comprise the steps:
In the local side part, provide via the direct current power output of mains supply conversion and the direct current power output of deriving by battery module;
Utilize transmission medium that said direct current power output is transferred to distal portions;
At distal portions, said direct current power output is offered mobile communication equipment;
Be characterised in that, also comprise:
Measurement is at the power demand of the mobile communication equipment of distal portions; And the signal of the said power demand of generation representative; Control section is confirmed the direct current power output via the mains supply conversion partly of said local side according to this signal, to reduce the direct current power output that is provided by storage battery.
8. method as claimed in claim 7 wherein, also comprises:
In the local side part, mains supply is converted to predetermined direct voltage and offers one or more power supply units respectively, each arrives corresponding distal portions through some transmission medium said power supply unit; And/or
At distal portions, the direct voltage that receives is depressurized to required voltage, and offers one or more communicators; Wireless signal is perhaps transmitted in said communicator emission.
9. method as claimed in claim 7, the power demand at the mobile communication equipment of distal portions of wherein said measurement receives the influence of the telephone traffic of one or more communicators.
10. method as claimed in claim 7 is wherein represented the signal of the overall power requirement of distal portions, is calculated by the total current demand of each equipment of far-end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2012101496240A CN102694658A (en) | 2012-05-15 | 2012-05-15 | System and method for direct-current remote power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101496240A CN102694658A (en) | 2012-05-15 | 2012-05-15 | System and method for direct-current remote power supply |
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| CN102694658A true CN102694658A (en) | 2012-09-26 |
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| CN2012101496240A Pending CN102694658A (en) | 2012-05-15 | 2012-05-15 | System and method for direct-current remote power supply |
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| CN103248128A (en) * | 2013-05-28 | 2013-08-14 | 国家电网公司 | Remote power supply system and method |
| CN105338599A (en) * | 2014-08-06 | 2016-02-17 | 中国移动通信集团甘肃有限公司 | Power supply method and device for indoor distributed system |
| CN106300632A (en) * | 2016-08-05 | 2017-01-04 | 重庆悦泰科技有限公司 | DC uninterrupted remote electric power system |
| CN108575030A (en) * | 2017-03-14 | 2018-09-25 | 上海巍立智能科技有限公司 | Portable lamp and its control method |
| CN113544936A (en) * | 2019-07-22 | 2021-10-22 | 京瓷株式会社 | Optical power supply system |
| CN115882592A (en) * | 2023-02-13 | 2023-03-31 | 中国铁塔股份有限公司 | Remote power supply system |
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| CN1845613A (en) * | 2006-05-19 | 2006-10-11 | 张旭 | Self-adaptive low-voltage remote power supply device of little smart and its working method |
| CN101277026A (en) * | 2008-03-28 | 2008-10-01 | 张旭 | Intelligent remote low pressure high power electric power supply system as well as working method thereof |
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| US6815844B2 (en) * | 2000-03-22 | 2004-11-09 | Flextronics International Gmbh & Co. Nfg. Kg | Circuit for supplying power to a network termination unit of a message transmission system |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103248128A (en) * | 2013-05-28 | 2013-08-14 | 国家电网公司 | Remote power supply system and method |
| CN105338599A (en) * | 2014-08-06 | 2016-02-17 | 中国移动通信集团甘肃有限公司 | Power supply method and device for indoor distributed system |
| CN106300632A (en) * | 2016-08-05 | 2017-01-04 | 重庆悦泰科技有限公司 | DC uninterrupted remote electric power system |
| CN106300632B (en) * | 2016-08-05 | 2019-02-01 | 重庆悦泰科技有限公司 | DC uninterrupted remote electric power system |
| CN108575030A (en) * | 2017-03-14 | 2018-09-25 | 上海巍立智能科技有限公司 | Portable lamp and its control method |
| CN113544936A (en) * | 2019-07-22 | 2021-10-22 | 京瓷株式会社 | Optical power supply system |
| US11381321B2 (en) | 2019-07-22 | 2022-07-05 | Kyocera Corporation | Optical power supply system |
| US11411659B2 (en) | 2019-07-22 | 2022-08-09 | Kyocera Corporation | Optical power supply system |
| CN115882592A (en) * | 2023-02-13 | 2023-03-31 | 中国铁塔股份有限公司 | Remote power supply system |
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Application publication date: 20120926 |