CN104201761A - Power supply system integrating photovoltaic power system and communication power supply - Google Patents
Power supply system integrating photovoltaic power system and communication power supply Download PDFInfo
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- CN104201761A CN104201761A CN201410494305.2A CN201410494305A CN104201761A CN 104201761 A CN104201761 A CN 104201761A CN 201410494305 A CN201410494305 A CN 201410494305A CN 104201761 A CN104201761 A CN 104201761A
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- 238000004891 communication Methods 0.000 title claims abstract description 57
- 238000006243 chemical reaction Methods 0.000 claims abstract description 8
- 239000013589 supplement Substances 0.000 claims description 13
- 238000012937 correction Methods 0.000 claims description 10
- 239000005955 Ferric phosphate Substances 0.000 claims description 3
- 229940032958 ferric phosphate Drugs 0.000 claims description 3
- WBJZTOZJJYAKHQ-UHFFFAOYSA-K iron(3+) phosphate Chemical compound [Fe+3].[O-]P([O-])([O-])=O WBJZTOZJJYAKHQ-UHFFFAOYSA-K 0.000 claims description 3
- 229910000399 iron(III) phosphate Inorganic materials 0.000 claims description 3
- 229910052744 lithium Inorganic materials 0.000 claims description 3
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- 238000005265 energy consumption Methods 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 4
- 238000010248 power generation Methods 0.000 abstract description 4
- 238000007599 discharging Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
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- 239000003990 capacitor Substances 0.000 description 3
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- 238000004134 energy conservation Methods 0.000 description 3
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- 230000002159 abnormal effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000013519 translation Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
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- 230000007774 longterm Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000002085 persistent effect Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
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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
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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Abstract
The invention discloses a power supply system integrating a photovoltaic power system and a communication power supply. The power supply system is connected with communication equipment, comprises a storage battery, and further comprises a commercial power rectifying module, a photovoltaic power generation module, a DC-AC-DC converting module and an intelligent control module, wherein the commercial power rectifying module is used for converting commercial alternating current into first direct current, and transmitting the first direct current into the DC-AC-DC converting module; the photovoltaic power generation module is used for converting sunlight into second direct current, and transmitting the second direct current into the DC-AC-DC converting module; the intelligent control module is used for controlling the electric discharging of the DC-AC-DC converting module to realize real-time power supply switching between the commercial power rectifying module and photovoltaic power generation module. The power supply system has the advantages that first, the power supply safety is guaranteed, one set of conversion circuit is shared, and the diodes are isolated to ensure power supply safety; second, the operation cost, energy consumption and maintenance workload are reduced.
Description
Technical field
The invention belongs to power technique fields, especially, relate to the electric power system that a kind of photovoltaic and communication power supply are used in combination.
Background technology
At present, embed the photovoltaic generation of the power supply system for communications and method of supplying power to and be adopt two covers completely independently high frequency switch power realize, prior art generally needs two cover high frequency switch power supply systems to work simultaneously, and on the one hand, the direct current that photovoltaic sends is for powering to communication equipment; On the other hand, due to the unsteadiness of photovoltaic, in order to ensure the safe power supply of communication equipment, another set of by the high frequency switch power supply system of mains-supplied, still need long-term parallel operation.
Publication No. is that the patent documentation of CN102545299A has been announced a kind of communication solar photovoltaic generation system and method for supplying power to, and power-supply system comprises uses electric loading, and civil power is supplied with to the Switching Power Supply by electric loading, comprising: solar panels, for receiving solar energy; Solar converter, is connected with solar panels with by electric loading, and with switch power parallel, solar converter comprises: power model is that electric energy offers by electric loading by the power conversion of the solar panels that receive; Monitoring/control module, be connected with power model, the output voltage of power ratio control module is higher than the output voltage of Switching Power Supply, and the power of power ratio control module is greater than the peak power rating of solar panels, and the actual output peak power of solar panels is less than the gross power by electric loading.The solar power generation of this technology can improve the utilization ratio to solar energy, but shortcoming is: increased energy consumption; Increase equipment investment and taken the space of machine room preciousness; Increase maintenance workload.
Summary of the invention
The object of the invention is to overcome above-mentioned deficiency, the electric power system that provides a kind of photovoltaic and communication power supply to be used in combination, it has not only ensured safe power supply, has also reached energy-conservation and effect that reduce costs.
To achieve these goals, the technical solution used in the present invention is:
The electric power system that photovoltaic and communication power supply are used in combination, this electric power system is connected with communication equipment, and this electric power system comprises batteries, it is characterized in that, also comprise: commercial power rectification module, photovoltaic generating module, direct current → interchange → DC converting module and intelligent control module, wherein
Described commercial power rectification module, for civil power alternating current being changed into the first direct current that voltage is U1, receives the switch controlling signal of described intelligent control module, controls described the first direct current and exports described direct current → interchange → DC converting module to;
Described photovoltaic generating module, being used for is that voltage is the second direct current of U2 by light energy conversion, described voltage U 2 is greater than voltage U 1, simultaneously, receive the switch controlling signal of described intelligent control module, control described the second direct current and transfer to isolating diode, export described direct current → interchange → DC converting module to by described isolating diode;
Described direct current → interchange → DC converting module, for receiving the first direct current of described commercial power rectification module output or the second direct current of described photovoltaic generating module output, and be converted to alternating current, then this alternating current is transformed to the 3rd direct current that sends to described communication equipment;
Described intelligent control module, while maintaining more than 300 seconds for luminous energy, send cut-off signals to described commercial power rectification module, close described first direct current of described commercial power rectification module to described direct current → interchange → DC converting module output, and close described the 3rd direct current of being supplied with to described communication equipment by described direct current → interchange → DC converting module; Export described the second direct current by described photovoltaic generating module to described direct current → interchange → DC converting module simultaneously, and supply with described the 3rd direct current by described direct current → interchange → DC converting module to described communication equipment, supplement the capacity of described batteries;
When described voltage U 2 drops to the first set point, send start signal to described commercial power rectification module, export described the first direct current by described commercial power rectification module to described direct current → interchange → DC converting module, supply with described the 3rd direct current by described direct current → interchange → DC converting module to described communication equipment, supplement the capacity of described batteries;
When described batteries is discharged to the second set point, send start signal to described commercial power rectification module, export described the first direct current by described commercial power rectification module to described direct current → interchange → DC converting module, supply with described the 3rd direct current by described direct current → interchange → DC converting module to described communication equipment, supplement the capacity of described batteries;
Described the first set point is 2/3 of U2 rated voltage; Described the second set point is 60% of described batteries rated capacity.
Preferably, described commercial power rectification module is made up of rectification circuit, filter circuit and power factor correction circuit.
Preferably, described photovoltaic generating module, comprises the photovoltaic module that at least two groups are connected in parallel.
Preferably, the described photovoltaic module of every group, comprises at least five photovoltaic cells that are connected in series.
Preferably, described direct current → interchange → DC converting module, comprises at least three high-frequency switching power supply modules that are connected in parallel.
Preferably, described batteries, is composed in series by least ten six ferric phosphate lithium cells or lead-acid battery.
Preferably, described intelligent control module, is further microprocessor.
Beneficial effect of the present invention is:
First, power supply ensures safety, commercial power rectification module, photovoltaic generating module, direct current → interchange → DC converting module is connected with intelligent control module respectively, conversion module, by intelligent control module control, makes photovoltaic power supply system and mains-supplied system can share a set of translation circuit, and isolating diode also can ensure the safety that realizes power supply.
Second, cut operating costs, than the mode of traditional power supply system for communications and photovoltaic generating system two cover system independent operatings, can be significantly energy-conservation, save land, material-saving, and minimizing running cost, reduce energy consumption, reduced equipment investment and taken the space of machine room preciousness, and alleviated maintenance workload.
Brief description of the drawings
Accompanying drawing described herein is used to provide further understanding of the present application, forms the application's a part, and the application's schematic description and description is used for explaining the application, does not form the improper restriction to the application.In the accompanying drawings:
Fig. 1 is the structural principle schematic diagram of the electric power system that is used in combination of photovoltaic of the present invention and communication power supply;
Fig. 2 is the embodiment circuit diagram of the electric power system that is used in combination of photovoltaic of the present invention and communication power supply.
Fig. 3 is the embodiment schematic diagram of a kind of power factor correction circuit of the circuit employing shown in Fig. 2;
Fig. 4 is the embodiment schematic diagram of the another kind of power factor correction circuit of the circuit employing shown in Fig. 2.
Embodiment
Censure specific components as used some vocabulary in the middle of specification and claim.Those skilled in the art should understand, and hardware manufacturer may be called same assembly with different nouns.This specification and claims are not used as distinguishing the mode of assembly with the difference of title, but the difference in function is used as the criterion of distinguishing with assembly.If " comprising " mentioned in the middle of specification and claim is in the whole text an open language, therefore should be construed to " comprise but be not limited to "." roughly " refer to that in receivable error range, those skilled in the art can solve the technical problem within the scope of certain error, reach described technique effect substantially.Specification subsequent descriptions is to implement the application's preferred embodiments, and right described description is to illustrate that the application's rule is object, not in order to limit the application's scope.The application's protection range is when being as the criterion depending on the claims person of defining.
Embodiment 1
Please refer to Fig. 1, the electric power system that photovoltaic of the present invention and communication power supply are used in combination comprises: batteries, it is characterized in that, also comprise: commercial power rectification module, photovoltaic generating module, direct current → interchange → DC converting module and intelligent control module, wherein, described commercial power rectification module, for civil power alternating current is changed into the direct current that voltage is U1, this direct current is the first direct current, and receive the switch controlling signal of described intelligent control module, taking control voltage as the first direct current of U1 exports to described direct current → interchange → DC converting module.
Described photovoltaic generating module, being used for is that voltage is the direct current of U2 by light energy conversion, this direct current is the second direct current, described voltage U 2 is slightly larger than voltage U 1, simultaneously, receive the switch controlling signal of described intelligent control module, transfer to isolating diode to control voltage as the second direct current of U2, and further export described direct current → interchange → DC converting module to by described isolating diode.
Described direct current → interchange → DC converting module, for receiving described commercial power rectification module, or the first direct current of described photovoltaic generating module output, or the second direct current, and be converted to alternating current, and then be transformed to the 3rd required direct current of communication equipment.
Described intelligent control module, be used for: in the time that luminous energy is normal and maintain 300 seconds, send cut-off signals to described commercial power rectification module, close described commercial power rectification module to described direct current → interchange → DC converting module output direct current, further close by described direct current → interchange → DC converting module and power to described communication equipment, now,, power and supplement the capacity of batteries to described communication equipment by described direct current → interchange → DC converting module to direct current → interchange → DC converting module output direct current by described photovoltaic generating module.
In the time that luminous energy drops to the first set point to U2 extremely, send start signal to described commercial power rectification module, export direct current by described commercial power rectification module to described direct current → interchange → DC converting module, powered to communication equipment by described direct current → interchange → DC converting module, and supplement the capacity of described batteries.Preferably, described the first set point is 2/3 of U2 rated voltage.
In the time that described in the gross power of photovoltaic generating module can not meet whole communication equipments, power of communication equipment requires, by the power of photovoltaic generating module shortcoming described in the batteries auto-compensation in floating charge state, in the time that described batteries is discharged to the second set point, send start signal to described commercial power rectification module,, power and supplement the capacity of described batteries to described communication equipment by described direct current → interchange → DC converting module to direct current → interchange → DC converting module output direct current by described commercial power rectification module.Preferably, described the second set point is 60% of described batteries rated capacity.
Preferably, described commercial power rectification module is made up of rectification circuit, filter circuit and power factor correction circuit (PFC), and civil power input can adopt three-phase 380V to introduce according to system power size, also can adopt single-phase 220V to introduce.
Preferably, described circuit of power factor correction can improve the power factor of electric equipment, reduces the harmonic pollution to electrical network.Preferably, its main circuit can adopt buck, boost type, lifting/lowering pressure type, and inverse-excitation type.In specific embodiment, can adopt step-up type power factor correcting circuit, its continuous current mode, energy storage inductor can be used as filter and suppresses radio frequency interference and EMI noise, and prevents that electrical network from impacting the high frequency transient of main circuit.
Preferably, commercial power rectification module is that civil power alternating current is changed into direct current, and wherein, rectification circuit can adopt halfwave rectifier, full-wave rectification, bridge rectifier etc. conventionally.The present embodiment is for becoming 50HZ AC power into direct voltage U1 by rectification circuit and pfc circuit, and the voltage of photovoltaic generating module is U2, is designed to U2 and is slightly larger than U1.
Preferably, described photovoltaic generating module comprises solar cell, has positive and negative electrode and transform light energy can be become to the minimum solar battery cell of electric energy.Wherein, the electronic section that photovoltaic cells is photovoltaic cell, absorbs electronics and is converted into electric energy.
Please refer to Fig. 2, as shown in the figure, described photovoltaic generating module comprises the photovoltaic module that at least two groups are connected in parallel.
Preferably, described photovoltaic module adopts many according to design voltage standard, and the present embodiment adopts five photovoltaic cells that are connected in series.
Preferably, the voltage of described every photovoltaic cells is 72V, and power is 450W.
Preferably, photovoltaic cells 11 is connected in series photovoltaic cells 12, and photovoltaic cells 12 is connected in series photovoltaic cells 13, and photovoltaic cells 13 is connected in series photovoltaic cells 14, and photovoltaic cells 14 is connected in series photovoltaic cells 15.
Preferably, photovoltaic cells 21 is connected in series photovoltaic cells 22, and photovoltaic cells 22 is connected in series photovoltaic cells 23, and photovoltaic cells 23 is connected in series photovoltaic cells 24, and photovoltaic cells 24 is connected in series photovoltaic cells 25.
Preferably, photovoltaic cells 11 connects the positive pole of isolating diode 31, the negative pole of isolating diode 31 connects the a1 end of high-frequency switching power supply module 51, the positive pole of isolating diode 31 connects the positive pole of photovoltaic cells 11, the negative pole of photovoltaic cells 11 connects the positive pole of photovoltaic cells 12, the negative pole of photovoltaic cells 12 connects the positive pole of photovoltaic cells 13, and the negative pole of photovoltaic cells 13 connects the positive pole of photovoltaic cells 14, and the negative pole of photovoltaic cells 14 connects the positive pole of photovoltaic cells 15.
Preferably, the negative pole of isolating diode 32 connects the a2 end of high-frequency switching power supply module 52, the positive pole of isolating diode 32 connects the positive pole of photovoltaic cells 11, the negative pole of photovoltaic cells 11 connects the positive pole of photovoltaic cells 12, the negative pole of photovoltaic cells 12 connects the positive pole of photovoltaic cells 13, the negative pole of photovoltaic cells 13 connects the positive pole of photovoltaic cells 14, and the negative pole of photovoltaic cells 14 connects the positive pole of photovoltaic cells 15.
Preferably, the negative pole of isolating diode 33 connects the a3 end of high-frequency switching power supply module 53, the positive pole of isolating diode 33 connects the positive pole of photovoltaic cells 11, the negative pole of photovoltaic cells 11 connects the positive pole of photovoltaic cells 12, the negative pole of photovoltaic cells 12 connects the positive pole of photovoltaic cells 13, the negative pole of photovoltaic cells 13 connects the positive pole of photovoltaic cells 14, and the negative pole of photovoltaic cells 14 connects the positive pole of photovoltaic cells 15.
Preferably, the positive pole of isolating diode 31 connects the positive pole of photovoltaic cells 21, the negative pole of photovoltaic cells 21 connects the positive pole of photovoltaic cells 22, the negative pole of photovoltaic cells 22 connects the positive pole of photovoltaic cells 23, the negative pole of photovoltaic cells 23 connects the positive pole of photovoltaic cells 24, and the negative pole of photovoltaic cells 24 connects the positive pole of photovoltaic cells 25.
Preferably, the positive pole of isolating diode 32 connects the positive pole of photovoltaic cells 21, the negative pole of photovoltaic cells 21 connects the positive pole of photovoltaic cells 22, the negative pole of photovoltaic cells 22 connects the positive pole of photovoltaic cells 23, the negative pole of photovoltaic cells 23 connects the positive pole of photovoltaic cells 24, and the negative pole of photovoltaic cells 24 connects the positive pole of photovoltaic cells 25.
Preferably, the positive pole of isolating diode 33 connects the positive pole of photovoltaic cells 21, the negative pole of photovoltaic cells 21 connects the positive pole of photovoltaic cells 22, the negative pole of photovoltaic cells 22 connects the positive pole of photovoltaic cells 23, the negative pole of photovoltaic cells 23 connects the positive pole of photovoltaic cells 24, and the negative pole of photovoltaic cells 24 connects the positive pole of photovoltaic cells 25.
Preferably, described direct current → interchange → DC converting module comprises three high-frequency switching power supply modules that are connected in parallel: high-frequency switching power supply module 51, high-frequency switching power supply module 52, and high-frequency switching power supply module 53 is connected in parallel.
Preferably, the b1 end of high-frequency switching power supply module 51 connects the negative pole of photovoltaic cells 15, with the negative pole of photovoltaic cells 25.
Preferably, the b2 end of high-frequency switching power supply module 52 connects the negative pole of photovoltaic cells 15, with the negative pole of photovoltaic cells 25.
Preferably, the b3 end of high-frequency switching power supply module 53 connects the negative pole of photovoltaic cells 15, with the negative pole of photovoltaic cells 25.
The present embodiment can adopt the pfc circuit shown in Fig. 3, and pfc circuit comprises: surge current suppression circuit, full-wave rectification bridge, filter circuit, choke induction L1, PFC integrated package, field effect transistor, output filtering and feedback network and the network being formed by several resistance, electric capacity and diode.This pfc circuit becomes 220V/50Hz alternating voltage into DC voltage, and its circuit input power factor is close to 1.The output of bridge rectifier is received control circuit from X6, after conversion, provides 12VDC voltage for it.Receive choke induction L1 through filtered direct voltage, this inductance is brought up to circuit input power factor close to 1 together with Q1 and filter capacitor C1.
The operation principle of the electric power system that the photovoltaic of the present embodiment and communication power supply are used in combination is: in the time that luminous energy is normal and maintain 300 seconds, intelligent control module sends signal to rectification circuit, switch-off power factor correction circuit, now, photovoltaic generation voltage U 2 is fluctuateed by the impact of luminous energy power within the specific limits, is powered all the time by photovoltaic generating module to described communication equipment.
In the time that luminous energy is abnormal, as a pile black clouds of wafting in the air, when U2 drops into below 2/3, intelligent control module sends signal to commercial power rectification module, opens power factor correction circuit, and system is powered to described communication equipment by civil power; Meanwhile, after black clouds, photovoltaic voltage U2 returns in certain scope, after time delay, and switch-off power factor correction circuit, U2 provides communication equipment described in whole communication equipments.
In the time of luminous energy persistent anomaly, photovoltaic generation U2 is for a long time in spendable critical point, when the gross power of photovoltaic generation can not meet described power of communication equipment and requires, and the power of the storage battery auto-compensation photovoltaic shortcoming in floating charge state.When battery capacity be discharged to rated capacity 60% time, intelligent control module sends signal to rectification module, opens power factor correction circuit, system is powered and supplements the capacity of storage battery to communication equipment described in communication equipment by civil power.
Embodiment 2
Certain communication base station room, direct current 48V system, communication equipment 43 electric currents are got 80A described in communication equipment, and batteries 41 charging currents are got 20A, system maximum current 100A.Taking a frame as an associating power supply system, upper rack is installed alternating current-direct current distribution and high frequency switch power part, and batteries is installed in bottom, and storage battery is composed in series by 16 ferric phosphate lithium cells.System configuration: 45, three 48V/50A high-frequency switching power supply modules of an intelligent control module.Isolating diode 31,32,33 can be arranged on high-frequency switching power supply module inside, also can be arranged on the machine frame of module-external.
The electric power system that photovoltaic of the present invention and communication power supply are used in combination photovoltaic generating module comprise at least one group of photovoltaic module being connected in parallel.
Preferably, described photovoltaic module configures two groups, and every group is composed in series by five photovoltaic cells, and every unit is 72V/450W, and gross power is 4.5KW.
Preferably, described photovoltaic module comprises at least five photovoltaic cells that are connected in series.Photovoltaic cells is for generation of photovoltaic effect.
Preferably, the voltage of described every photovoltaic cells is 72V, and power is 450W.
Preferably, photovoltaic cells 11 is connected in series photovoltaic cells 12, and photovoltaic cells 12 is connected in series photovoltaic cells 13, and photovoltaic cells 13 is connected in series photovoltaic cells 14, and photovoltaic cells 14 is connected in series photovoltaic cells 15.
Preferably, photovoltaic cells 21 is connected in series photovoltaic cells 22, and photovoltaic cells 22 is connected in series photovoltaic cells 23, and photovoltaic cells 23 is connected in series photovoltaic cells 24, and photovoltaic cells 24 is connected in series photovoltaic cells 25.
Preferably, photovoltaic cells 11 connects the positive pole of isolating diode 31, the negative pole of isolating diode 31 connects the a1 end of high-frequency switching power supply module 51, the positive pole of isolating diode 31 connects the positive pole of photovoltaic cells 11, the negative pole of photovoltaic cells 11 connects the positive pole of photovoltaic cells 12, the negative pole of photovoltaic cells 12 connects the positive pole of photovoltaic cells 13, and the negative pole of photovoltaic cells 13 connects the positive pole of photovoltaic cells 14, and the negative pole of photovoltaic cells 14 connects the positive pole of photovoltaic cells 15.
Preferably, the negative pole of isolating diode 32 connects the a2 end of high-frequency switching power supply module 52, the positive pole of isolating diode 32 connects the positive pole of photovoltaic cells 11, the negative pole of photovoltaic cells 11 connects the positive pole of photovoltaic cells 12, the negative pole of photovoltaic cells 12 connects the positive pole of photovoltaic cells 13, the negative pole of photovoltaic cells 13 connects the positive pole of photovoltaic cells 14, and the negative pole of photovoltaic cells 14 connects the positive pole of photovoltaic cells 15.
Preferably, the negative pole of isolating diode 33 connects the a3 end of high-frequency switching power supply module 53, the positive pole of isolating diode 33 connects the positive pole of photovoltaic cells 11, the negative pole of photovoltaic cells 11 connects the positive pole of photovoltaic cells 12, the negative pole of photovoltaic cells 12 connects the positive pole of photovoltaic cells 13, the negative pole of photovoltaic cells 13 connects the positive pole of photovoltaic cells 14, and the negative pole of photovoltaic cells 14 connects the positive pole of photovoltaic cells 15.
Preferably, the positive pole of isolating diode 31 connects the positive pole of photovoltaic cells 21, the negative pole of photovoltaic cells 21 connects the positive pole of photovoltaic cells 22, the negative pole of photovoltaic cells 22 connects the positive pole of photovoltaic cells 23, the negative pole of photovoltaic cells 23 connects the positive pole of photovoltaic cells 24, and the negative pole of photovoltaic cells 24 connects the positive pole of photovoltaic cells 25.
Preferably, the positive pole of isolating diode 32 connects the positive pole of photovoltaic cells 21, the negative pole of photovoltaic cells 21 connects the positive pole of photovoltaic cells 22, the negative pole of photovoltaic cells 22 connects the positive pole of photovoltaic cells 23, the negative pole of photovoltaic cells 23 connects the positive pole of photovoltaic cells 24, and the negative pole of photovoltaic cells 24 connects the positive pole of photovoltaic cells 25.
Preferably, the positive pole of isolating diode 33 connects the positive pole of photovoltaic cells 21, the negative pole of photovoltaic cells 21 connects the positive pole of photovoltaic cells 22, the negative pole of photovoltaic cells 22 connects the positive pole of photovoltaic cells 23, the negative pole of photovoltaic cells 23 connects the positive pole of photovoltaic cells 24, and the negative pole of photovoltaic cells 24 connects the positive pole of photovoltaic cells 25.
Described direct current → interchange → DC converting module comprises three high-frequency switching power supply modules that are connected in parallel, high-frequency switching power supply module 51, high-frequency switching power supply module 52, and high-frequency switching power supply module 53 is connected in parallel.
Preferably, the b1 end of high-frequency switching power supply module 51 connects the negative pole of photovoltaic cells 15, with the negative pole of photovoltaic cells 25.
Preferably, the b2 end of high-frequency switching power supply module 52 connects the negative pole of photovoltaic cells 15, with the negative pole of photovoltaic cells 25.
Preferably, the b3 end of high-frequency switching power supply module 53 connects the negative pole of photovoltaic cells 15, with the negative pole of photovoltaic cells 25.
Fig. 4 is the another kind of embodiment of pfc circuit, and it is mainly by inductance L 2, diode VD1, VD2, switching tube VQ1, output main line filter capacitor C14 composition.Input circuit is made up of filter inductance L1, filter capacitor C1, rectifier bridge B1, piezo-resistance R4, thermistor R1.L11 and C3 form filter network.Control circuit is made up of TDA16888 and outer member thereof, peripheral circuit comprises: current detection circuit is made up of R9, input voltage sample circuit is made up of R6, R7, output voltage feedback circuit is made up of R17, R18, R19 and R20, feedback loop is PI controller, Voltage loop PI controller is made up of C9, C10, R24, and electric current loop PI controller is made up of C6, C7, R22.Controller operating frequency determines by resistance R 26, and R26 value is larger, and its operating frequency is less, R26 value 51k Ω, and operating frequency is 100kHz.
In the time that luminous energy is normal and maintain 400 seconds, intelligent control module sends signal to rectification module, turn-off pfc circuit, now photovoltaic generation voltage U 2 is fluctuateed by the impact of luminous energy power within the specific limits, still export described the second direct current by photovoltaic generating module to described direct current → interchange → DC converting module, and supply with described the 3rd direct current by described direct current → interchange → DC converting module to described communication equipment, supplement the capacity of described batteries.
In the time that luminous energy is abnormal, as a pile black clouds of wafting in the air, when U2 drops into below 2/3, intelligent control module sends signal to rectification circuit, open pfc circuit, system is exported described the first direct current by civil power to described direct current → interchange → DC converting module, and supplies with described the 3rd direct current by described direct current → interchange → DC converting module to described communication equipment, supplements the capacity of described batteries.In like manner, after black clouds, when luminous energy returns to some strength, U2 returns in normal range (NR), after time delay, turn-off PFC, export described the second direct current by civil power to described direct current → interchange → DC converting module, and supply with described the 3rd direct current by described direct current → interchange → DC converting module to described communication equipment, supplement the capacity of described batteries.
Beneficial effect of the present invention is:
First, power supply ensures safety, commercial power rectification module, photovoltaic generating module, direct current → interchange → DC converting module is connected with intelligent control module respectively, conversion module, by intelligent control module control, makes photovoltaic power supply system and mains-supplied system can share a set of translation circuit, and isolating diode also can ensure the safety that realizes power supply.
Second, cut operating costs, than the mode of traditional power supply system for communications and photovoltaic generating system two cover system independent operatings, can be significantly energy-conservation, save land, material-saving, and minimizing running cost, reduce energy consumption, reduced equipment investment and taken the space of machine room preciousness, and alleviated maintenance workload.
Above-mentioned explanation illustrates and has described some preferred embodiments of the application, but as previously mentioned, be to be understood that the application is not limited to disclosed form herein, should not regard the eliminating to other embodiment as, and can be used for various other combinations, amendment and environment, and can, in application contemplated scope described herein, change by technology or the knowledge of above-mentioned instruction or association area.And the spirit and scope that the change that those skilled in the art carry out and variation do not depart from the application, all should be in the protection range of the application's claims.
Claims (7)
1. the electric power system that a photovoltaic and communication power supply are used in combination, this electric power system is connected with communication equipment, this electric power system comprises batteries, it is characterized in that, also comprise: commercial power rectification module, photovoltaic generating module, direct current → interchange → DC converting module and intelligent control module, wherein
Described commercial power rectification module, for civil power alternating current being changed into the first direct current that voltage is U1, receives the switch controlling signal of described intelligent control module, controls described the first direct current and exports described direct current → interchange → DC converting module to;
Described photovoltaic generating module, being used for is that voltage is the second direct current of U2 by light energy conversion, described voltage U 2 is greater than voltage U 1, simultaneously, receive the switch controlling signal of described intelligent control module, control described the second direct current and transfer to isolating diode, export described direct current → interchange → DC converting module to by described isolating diode;
Described direct current → interchange → DC converting module, for receiving the first direct current of described commercial power rectification module output or the second direct current of described photovoltaic generating module output, and be converted to alternating current, then this alternating current is transformed to the 3rd direct current that sends to described communication equipment;
Described intelligent control module, while maintaining more than 300 seconds for luminous energy, send cut-off signals to described commercial power rectification module, close described first direct current of described commercial power rectification module to described direct current → interchange → DC converting module output, and close described the 3rd direct current of being supplied with to described communication equipment by described direct current → interchange → DC converting module; Export described the second direct current by described photovoltaic generating module to described direct current → interchange → DC converting module simultaneously, and supply with described the 3rd direct current by described direct current → interchange → DC converting module to described communication equipment, supplement the capacity of described batteries;
When described voltage U 2 drops to the first set point, send start signal to described commercial power rectification module, export described the first direct current by described commercial power rectification module to described direct current → interchange → DC converting module, supply with described the 3rd direct current by described direct current → interchange → DC converting module to described communication equipment, supplement the capacity of described batteries;
When described batteries is discharged to the second set point, send start signal to described commercial power rectification module, export described the first direct current by described commercial power rectification module to described direct current → interchange → DC converting module, supply with described the 3rd direct current by described direct current → interchange → DC converting module to described communication equipment, supplement the capacity of described batteries;
Described the first set point is 2/3 of U2 rated voltage; Described the second set point is 60% of described batteries rated capacity.
2. the electric power system that photovoltaic and communication power supply are used in combination according to claim 1, is characterized in that: described commercial power rectification module is made up of rectification circuit, filter circuit and power factor correction circuit.
3. the electric power system that photovoltaic and communication power supply are used in combination according to claim 2, is characterized in that: described photovoltaic generating module, comprises the photovoltaic module that at least two groups are connected in parallel.
4. the electric power system that photovoltaic and communication power supply are used in combination according to claim 3, is characterized in that, the described photovoltaic module of every group comprises at least five photovoltaic cells that are connected in series.
5. the electric power system that photovoltaic and communication power supply are used in combination according to claim 1, is characterized in that: described direct current → interchange → DC converting module, comprises at least three high-frequency switching power supply modules that are connected in parallel.
6. the electric power system that photovoltaic and communication power supply are used in combination according to claim 1, is characterized in that: described batteries, is composed in series by least ten six ferric phosphate lithium cells or lead-acid battery.
7. the electric power system that photovoltaic and communication power supply are used in combination according to claim 1, is characterized in that: described intelligent control module is further microprocessor.
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| CN105356582A (en) * | 2015-11-30 | 2016-02-24 | 南开大学 | Remotely controlled photovoltaic multi-output power supply |
| CN106026355A (en) * | 2016-05-30 | 2016-10-12 | 河南昊方通信工程技术有限公司 | Direct current power supply system for communication |
| CN106549476A (en) * | 2016-12-09 | 2017-03-29 | 国网北京市电力公司 | Communication power supply DC power-supply system |
| CN107317379A (en) * | 2017-08-22 | 2017-11-03 | 上海点贸信息技术有限公司 | A kind of battery charging module |
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| CN104810913A (en) * | 2015-05-22 | 2015-07-29 | 蚌埠市徽泰电气自动化有限公司 | Photovoltaic power generation device based on commercial power compensation and water pump system of photovoltaic power generation device |
| CN105356582A (en) * | 2015-11-30 | 2016-02-24 | 南开大学 | Remotely controlled photovoltaic multi-output power supply |
| CN106026355A (en) * | 2016-05-30 | 2016-10-12 | 河南昊方通信工程技术有限公司 | Direct current power supply system for communication |
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| CN107317379A (en) * | 2017-08-22 | 2017-11-03 | 上海点贸信息技术有限公司 | A kind of battery charging module |
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