CN103248128A - Remote power supply system and method - Google Patents
Remote power supply system and method Download PDFInfo
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- CN103248128A CN103248128A CN2013102044404A CN201310204440A CN103248128A CN 103248128 A CN103248128 A CN 103248128A CN 2013102044404 A CN2013102044404 A CN 2013102044404A CN 201310204440 A CN201310204440 A CN 201310204440A CN 103248128 A CN103248128 A CN 103248128A
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- power
- direct current
- power supply
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- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02B90/20—Smart grids as enabling technology in buildings sector
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- 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/12—Energy storage units, uninterruptible power supply [UPS] systems or standby or emergency generators, e.g. in the last power distribution stages
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- 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
- Y04S20/248—UPS systems or standby or emergency generators
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention provides a remote power supply system and a remote power supply method. The remote power supply system comprises a home terminal, at least one far end, a transmission medium, a control unit and at least one load, wherein the home terminal converts electric supply into direct current according to a control signal of the control unit of the remote power supply system when the electric supply is normal, outputs the direct current, and comprises a storage battery for supplying direct current according to a control signal of the control unit of the remote power supply system when the electric supply fails; the at least one far end receives the direct current from the home terminal, and supplies the received direct current to the load of the remote power supply system or converts the received direct current into alternating current and supplies the alternating current to the load of the remote power supply system; the transmission medium is positioned between the home terminal and the far end and is used for transmitting direct current; and the control unit is used for receiving the power information of the load of the remote power supply system, and generates a control signal according to the power information to control the power supply to the home terminal. The remote power supply system can perform centralized uninterrupted remote power supply on distributed automation equipment.
Description
Technical field
The present invention relates to a kind of remote electric power system and method, relating in particular to a kind ofly provides the UPS(uninterrupted power supply for the automation equipment that distributes etc.) remote electric power system and method.
Background technology
Along with the development of automatic technology, the distributed networking of automation equipments such as automation measurement and control equipment, protective device and the webserver has become main control networking mode.Meanwhile, the security and stability to the power supply of distributed automatization equipment has also proposed higher requirement.At present, the power supply for all kinds of automation equipments mainly contains two kinds: direct current 110V power supply and alternating current 220V power supply.
At present, the configuration mode of Chang Yong 110V DC power system is the most: after civil power is introduced, to jumbo 110V batteries power supply, provide 110V DC power supply by the 110V batteries to automation equipment again.This 110V DC power system existing questions is: owing to be subjected to the restriction of voltage, can not carry out remote power-feeding, therefore, need to install a large amount of 110V DC power supply device respectively additional in each automation equipment (namely controlling each end of network) of arranging that distributes, this has increased extensive works such as electric power introducing, project installation, plant maintenance, battery altering, and can't guarantee that power supply is stable.
To the 220V AC power supply system of automation equipment power supply, the small-sized ups system power supply of general employing at present.Ups system be comprise energy storage device, be the uninterrupted power supply of the constant voltage constant frequency of chief component with the inverter.When civil power input just often, ups system is supplied to load (being automation equipment etc.) to use after with the civil power voltage stabilizing, the ups system of this moment is exactly an electric main pressurizer, it is also to its energy storage device charging simultaneously; When civil power interrupted (for example accident interruption etc.), ups system was immediately with the electric energy of its energy storage device, and the method by the inversion conversion continues supply 220V alternating current to the automation equipment even load, thereby keeps the uninterrupted voltage stabilizing power supply of 220V AC power.Also there is the same shortcoming that can't remote power-feeding with above-mentioned 110V DC power system in this small-sized ups system, thereby all needs to be equipped with independent ups system for each distribution automation equipment.In addition, because ups system cost height, the two-shipper ups system that each distribution automation equipment is arranged the redundancy running pattern is very uneconomic, and the ups system of unit operation can't guarantee uninterrupted power supply when the ups system fault.On the other hand, above-mentioned two kinds of power-supply systems commonly used can only be supplied 110V DC power supply or 220V AC power respectively, can not realize that a cover system supplies 110V DC power supply and 220V AC power simultaneously.
Summary of the invention
The object of the present invention is to provide and a kind ofly can concentrate remote electric power system and the method that uninterrupted power supply is provided to the automation equipment that distributes.
The invention provides a kind of remote electric power system, comprise: local terminal, it at civil power just often, control signal according to the control unit of described remote electric power system converts civil power to direct current and output, and described local terminal comprises for the batteries that DC power supply is provided when the municipal power failure, according to the control signal of the control unit of described remote electric power system; At least one far-end, it receives direct current from described local terminal, and the direct current that receives is supplied to the load of described remote electric power system or converts the direct current that receives to load that alternating current is supplied to described remote electric power system; Transmission medium, it is used for the transmission direct current between described local terminal and described far-end; Described control unit, it is used for the power information of the load of the described remote electric power system of reception, and produces control signal according to this power information, control with the power supply to described local terminal, and at least one described load.
Preferably, wherein said local terminal also comprises: the civil power input unit, dispose AC/DC converter, and be used for inserting civil power and convert civil power to direct current; At least one local terminal power supply unit, it is connected with described civil power input unit, described batteries and described transmission medium respectively, receive the direct current of described civil power input unit or described batteries output, and the direct current that receives is outputed to described transmission medium; The local terminal administrative unit, its with described local terminal power supply unit and described control unit directly or is connected indirectly, be used for from described control unit reception control signal, and adjust the direct current power that each described local terminal power supply unit is exported according to this control signal.
Preferably, the described local terminal power supply unit of wherein said local terminal also comprises boosting unit, outputs to described transmission medium after its direct current that will receive from direct current or the described batteries of described civil power input unit conversion boosts.
Preferably, wherein said far-end comprises: the power supply receiving element, and it is connected with described transmission medium, from described transmission medium input DC power; Inverter unit, it is connected with described power supply receiving element, will convert AC power to from the DC power supply of described power supply receiving element input; The power divider unit, it is connected with described power supply receiving element or described inverter unit, and the direct current of described power supply receiving element output or the alternating current of described inverter unit output are distributed to described load; Power detecting unit, it detects the electric current of described load, and generates power signal and this power signal is sent to described control unit according to detected electric current.
Preferably, the power supply receiving element of wherein said far-end also comprises pressure unit, and it will be supplied to described power supply receiving element or described inverter unit after the DC power supply step-down of described transmission medium reception.
Preferably, wherein said control unit is communicated by letter with described local terminal and described far-end respectively by cable or wireless mode.
Preferably, described transmission medium is copper core optical cable.
Preferably, described remote electric power system further comprises monitor portion, and it is positioned at described local terminal place, is used for monitoring the power output of described remote electric power system.
The present invention also provides a kind of remote power feeding method, may further comprise the steps:
(1) introduces civil power, convert civil power to direct current by AC/DC converter;
(2) measure the power of each load, and produce control signal according to the power of each load;
(3) according to described control signal, at civil power just often, the direct current after the conversion is fed on the electric power transfer medium, when municipal power failure, the direct current that batteries is exported is fed on the electric power transfer medium;
(4) receive direct current in each load place from described electric power transfer medium, the direct current that receives directly is fed to each load through power divider, perhaps converts the direct current that receives to alternating current through inverter and be fed to each load by power divider.
Preferably, wherein said (3) step also comprises the step that is fed to after direct current boosted on the electric power transfer medium, and described (4) step also comprises after described electric power transfer medium receives direct current it is carried out the step of step-down.
Remote electric power system of the present invention and method use the ups system of local terminal to concentrate to far-end load remote power feeding, can overcome the above-mentioned shortcoming of the distributed ups system of prior art, can also realize that a cover electric power system supplies direct current and alternating current simultaneously simultaneously.
Description of drawings
Fig. 1 is the schematic block diagram of remote electric power system of the present invention.
Fig. 2 is the schematic block diagram of the local terminal of remote electric power system of the present invention.
Fig. 3 is the schematic block diagram of the far-end of remote electric power system of the present invention.
Fig. 4 is the flow chart of remote power feeding step of the present invention.
Embodiment
Embodiment to remote electric power system of the present invention and method describes below in conjunction with accompanying drawing.
As shown in Figure 1, remote electric power system of the present invention comprises local terminal 1, at least one far-end 2, transmission medium 3, control unit 4 and at least one load 5.
Local terminal 1 inserts civil power according to the control signal of control unit 4, and converts civil power to direct current and output on the transmission medium 3.Local terminal 1 comprises that also batteries 103(sees Fig. 2), when municipal power failure, local terminal 1 outputs on the transmission medium 3 according to the control signal of control unit 4 direct current with batteries 103, thereby guarantees that the concentrated area is to the far-end uninterrupted power supply.
Far-end 2 receives the direct current that local terminal 1 is supplied by transmission medium 3, and the direct current that receives is supplied to load, and for the load of using alternating current, far-end 2 also can convert the direct current that receives to required alternating current and be supplied to load.Thereby realize utilizing a cover electric power system can supply direct current and can supply alternating current again.
The power information that control unit 4 receives from load, and according to this power information generation control signal, with this control signal the power supply of local terminal 1 is controlled.Like this, can realize that power based on load changes comes out-put supply.
The load 5 of remote electric power system of the present invention is the various automation equipments that need UPS supply, and it generally uses 110V DC power supply or 220V AC power.
Alternatively, remote electric power system of the present invention can also comprise monitor portion 6, is used for the various control informations of monitoring remote electric power system, for example power output
Describe the configuration of local terminal 1 in detail below in conjunction with Fig. 2.
As shown in Figure 2, local terminal 1 comprises civil power input unit 104, batteries 103, at least one local terminal power supply unit 102 and local terminal administrative unit 101.
Civil power input unit 104 disposes AC/DC converter, is used for inserting civil power and converts civil power to direct current.
As mentioned above, batteries 103 is used for providing direct current when municipal power failure.Civil power just often can be charged to batteries 103 by civil power.
Local terminal power supply unit 102 is connected respectively at the output of civil power input unit 104 with batteries 103, receives the direct current of civil power input unit 104 or batteries 103 outputs, and direct current is transferred on the transmission medium 3.
Local terminal administrative unit 101 directly is connected or wireless connections by cable with local terminal power supply unit 102 and control unit 4, and local terminal administrative unit 101 is adjusted the power output of each local terminal power supply unit 102 according to the control signal that receives from control unit 4.Change controlledly power supply by this according to bearing power, can keep power output to be complementary with bearing power substantially, further play the effect of stable power-supplying.
Describe the configuration of far-end 2 in detail below in conjunction with Fig. 3.
As shown in Figure 3, far-end comprises power supply receiving element 201, inverter unit 202, power divider unit 203 and power detecting unit 205.
Power supply receiving element 201 is connected with transmission medium 3, receives the direct current that comes from the local terminal transmission.
Above-mentioned remote electric power system goes for the direct current transmission of multiple voltage grade, for example the 500V DC power-supply system.Under the situation of high voltage direct current transmission, the local terminal power supply unit 102 of local terminal 1 can also comprise the boosting unit (not shown), is used for being transferred to after direct current is boosted transmission medium 3.Correspondingly, the power supply receiving element 201 of far-end 2 can comprise the pressure unit (not shown), be used for and be for example 110V working direct current from the high voltage direct current step-down that transmission medium 3 receives, also can step-down be for example 220V direct current, convert 220V alternating current for example commonly used to through inverter unit and be supplied to load.
Describe remote power feeding method of the present invention in detail below in conjunction with Fig. 4.
Remote power feeding method of the present invention is divided into following step:
Step S301: introduce civil power, convert civil power to direct current by AC/DC converter.
Step S302: measure the power of each load, and produce control signal according to the power of each load.
Step S303: according to this control signal, at civil power just often, will be fed on the electric power transfer medium by the direct current after the AC/DC converter conversion, when municipal power failure, then the direct current with batteries output is fed on the electric power transfer medium.
Step S304: receive direct current from the electric power transfer medium in each load place, the direct current that receives directly is fed to each load through power divider, perhaps converts the direct current that receives to alternating current through inverter and be fed to each load by power divider.
Under the situation of high voltage direct current power supply, can also comprise the step that is fed to after direct current boosted on the electric power transfer medium among the step S303, and can also comprise among the step S304 after the electric power transfer medium receives direct current it is carried out the step of step-down.
By remote electric power system described above and method, can be concentrated to far-end by the local terminal ups system provides automation equipment required uninterrupted interchange or direct current, has realized the remote power feeding of centralized uninterrupted power supply.
The above is preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. remote electric power system comprises:
Local terminal, it at civil power just often, control signal according to the control unit of described remote electric power system converts civil power to direct current and output, and described local terminal comprises for the batteries that DC power supply is provided when the municipal power failure, according to the control signal of the control unit of described remote electric power system;
At least one far-end, it receives direct current from described local terminal, and the direct current that receives is supplied to the load of described remote electric power system or converts the direct current that receives to load that alternating current is supplied to described remote electric power system;
Transmission medium, it is used for the transmission direct current between described local terminal and described far-end;
Described control unit, it is used for the power information of the load of the described remote electric power system of reception, and produces control signal according to this power information, control with the power supply to described local terminal, and
At least one described load.
2. remote electric power system according to claim 1, wherein said local terminal also comprises:
The civil power input unit disposes AC/DC converter, is used for inserting civil power and converts civil power to direct current;
At least one local terminal power supply unit, it is connected with described civil power input unit, described batteries and described transmission medium respectively, receive the direct current of described civil power input unit or described batteries output, and the direct current that receives is outputed to described transmission medium;
The local terminal administrative unit, its with described local terminal power supply unit and described control unit directly or is connected indirectly, be used for from described control unit reception control signal, and adjust the direct current power that each described local terminal power supply unit is exported according to this control signal.
3. remote electric power system according to claim 2, the described local terminal power supply unit of wherein said local terminal also comprises boosting unit, outputs to described transmission medium after its direct current that will receive from direct current or the described batteries of described civil power input unit conversion boosts.
4. remote electric power system according to claim 1, wherein said far-end comprises:
The power supply receiving element, it is connected with described transmission medium, from described transmission medium input DC power;
Inverter unit, it is connected with described power supply receiving element, will convert AC power to from the DC power supply of described power supply receiving element input;
The power divider unit, it is connected with described power supply receiving element or described inverter unit, and the direct current of described power supply receiving element output or the alternating current of described inverter unit output are distributed to described load;
Power detecting unit, it detects the electric current of described load, and generates power signal and this power signal is sent to described control unit according to detected electric current.
5. remote electric power system according to claim 4, the power supply receiving element of wherein said far-end also comprises pressure unit, be supplied to described power supply receiving element or described inverter unit after its DC power supply step-down that will receive from described transmission medium.
6. remote electric power system according to claim 1, wherein said control unit is communicated by letter with described local terminal and described far-end respectively by cable or wireless mode.
7. remote electric power system according to claim 1, described transmission medium is copper core optical cable.
8. remote electric power system according to claim 1 further comprises monitor portion, and it is positioned at described local terminal place, is used for monitoring the power output of described remote electric power system.
9. remote power feeding method may further comprise the steps:
(1) introduces civil power, convert civil power to direct current by AC/DC converter;
(2) measure the power of each load, and produce control signal according to the power of each load;
(3) according to described control signal, at civil power just often, the direct current after the conversion is fed on the electric power transfer medium, when municipal power failure, the direct current that batteries is exported is fed on the electric power transfer medium;
(4) receive direct current in each load place from described electric power transfer medium, the direct current that receives directly is fed to each load through power divider, perhaps converts the direct current that receives to alternating current through inverter and be fed to each load by power divider.
10. remote power feeding method according to claim 9, wherein said (3) step also comprises the step that is fed to after direct current boosted on the electric power transfer medium, and described (4) step also comprises after described electric power transfer medium receives direct current it is carried out the step of step-down.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013102044404A CN103248128A (en) | 2013-05-28 | 2013-05-28 | Remote power supply system and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013102044404A CN103248128A (en) | 2013-05-28 | 2013-05-28 | Remote power supply system and method |
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| CN103248128A true CN103248128A (en) | 2013-08-14 |
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| CN2013102044404A Pending CN103248128A (en) | 2013-05-28 | 2013-05-28 | Remote power supply system and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104882955A (en) * | 2015-07-01 | 2015-09-02 | 成都福兰特电子技术股份有限公司 | Remote power supply system and power supply method thereof |
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| CN1285680A (en) * | 1999-08-24 | 2001-02-28 | 日本电气株式会社 | Method and system for long distance power supplying |
| CN2794008Y (en) * | 2005-04-27 | 2006-07-05 | 杭州中信网络自动化有限公司 | Long-range power supplying system for monitoring highway |
| WO2010061116A2 (en) * | 2008-11-25 | 2010-06-03 | Bull Sas | Direct current uninterruptible power supply device for a data-processing system with at least one processor |
| CN102694658A (en) * | 2012-05-15 | 2012-09-26 | 兰州大学 | System and method for direct-current remote power supply |
-
2013
- 2013-05-28 CN CN2013102044404A patent/CN103248128A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1285680A (en) * | 1999-08-24 | 2001-02-28 | 日本电气株式会社 | Method and system for long distance power supplying |
| CN2794008Y (en) * | 2005-04-27 | 2006-07-05 | 杭州中信网络自动化有限公司 | Long-range power supplying system for monitoring highway |
| WO2010061116A2 (en) * | 2008-11-25 | 2010-06-03 | Bull Sas | Direct current uninterruptible power supply device for a data-processing system with at least one processor |
| CN102694658A (en) * | 2012-05-15 | 2012-09-26 | 兰州大学 | System and method for direct-current remote power supply |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104882955A (en) * | 2015-07-01 | 2015-09-02 | 成都福兰特电子技术股份有限公司 | Remote power supply system and power supply method thereof |
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Application publication date: 20130814 |