CN203632914U - LED centralized direct-current micro-grid power supply system - Google Patents
LED centralized direct-current micro-grid power supply system Download PDFInfo
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- CN203632914U CN203632914U CN201320700890.8U CN201320700890U CN203632914U CN 203632914 U CN203632914 U CN 203632914U CN 201320700890 U CN201320700890 U CN 201320700890U CN 203632914 U CN203632914 U CN 203632914U
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Abstract
The utility model discloses an LED centralized direct-current micro-grid power supply system. A power supply bus of the system comprises a positive-electrode bus and a negative-electrode bus. Multiple electric energy storage modules, multiple LED load modules, multiple wind power generation modules, multiple photovoltaic power generation modules and multiple fuel cell modules are connected in parallel to the power supply bus respectively. An LED direct-current micro-grid power management module comprises a data acquisition module and a computer. According to the method, the total load of the LED load modules and energy generated by all the modules are collected through the power management module, and therefore reasonable allocation is achieved. Under the premise that wind energy and solar energy are preferably considered, a power grid module, the energy storage modules and the fuel battery module are reasonably utilized. According to the LED centralized direct-current micro-grid power supply system, the demand for loads of an LED lamp is met, and energy loss generated in conversion from alternating-current electric energy to direct-current electric energy in a traditional power supply system is reduced. Under the condition of the same power, the LED centralized direct-current micro-grid power supply system is low in cost compared with the existing lighting fixture of which each LED lamp is integrated with one power supply.
Description
Technical field
The utility model relates to LED electric power system, particularly relates to the centralized direct current microgrid of a kind of LED electric power system; Belong to the technical field of electric power system.
Background technology
The throw light on development of history of the mankind entered after 21 century, traditional incandescent lamp, fluorescent lighting card are replaced by novel efficient, energy-saving and environmental protection, longlife noodles and highly reliable semiconductor solid state lighting gradually, LED (Light Emitting Diode, light-emitting diode) be known as environment-friendly type high-tech new light sources of new generation by the whole world, being more described as is that illumination in history is really the revolution of meaning again.
LED driving power is that power supply supply is converted to specific electric current and voltage with the luminous electric pressure converter of driving LED, although the luminous efficiency of LED progressively improves, but the bottleneck that the driving power circuit performance supporting with LED become LED to apply with the life-span, the LED driving power extensively adopting at present selects electrochemical capacitor to be used as filtering, make its working life be subject to the impact of electrochemical capacitor, electrochemical capacitor life generally only has 10000 hours at present, the LED that is 100000 hours with working life differs greatly, therefore electrochemical capacitor becomes the principal element that affects LED driving power bulk life time, the energy-saving effect of LED light fixture can not effectively be realized.And the volume of electrochemical capacitor is larger, affect the further raising of LED driving power overall performance.
It is all the power supply adopting below several hectowatts that the LED extensively adopting at present drives, and every cover LED light fixture is integrated independently power supply and a LED lamp, as shown in Figure 1, this independent current source comprises the rectifier, PFC module, DC-DC module and the current-sharing module that connect successively.This supply power mode is brought following problem: the one, and Design of Luminaires will be considered position and the heat radiation of power supply, volume is large, Design of Luminaires is subject to power limitations, and cost improves; The 2nd, once power supply damages, whole light fixture is scrapped simultaneously, and cost is high, the life-span is short.
Traditional settling mode is by removing the electrochemical capacitor (in DC-DC module) in DC-DC module, in currently available technology, mainly to make up by control algolithm the defect of removing electrochemical capacitor, thereby improve integral LED power source life, but the method needs complicated control circuit, therefore will inevitably increase the complexity of LED driving power structure, improve the manufacturing cost of LED light fixture; LED load, because the impact that is subject to the factor such as weather and the junction temperature of himself changes, in the time of load variations, can reduce the stability of LED driving power by control algolithm while substituting large electrochemical capacitor.Also there are relevant technical staff and scholar to put forward DC power-supply system, by LED light fixture and isolated from power, concentrate to the power supply of LED lamp, convenient for maintaining and regulation voltage like this.But the method need to change into direct current by civil power, the conversion of this portion of energy will exhaust more than 10% energy loss, and the variation of power electronics also can be polluted electrical network.
Utility model content
The purpose of this utility model is to overcome prior art above shortcomings, and provide a kind of and change without exchanging with direct current, without independent independent current source, the centralized direct current microgrid of the rational LED of utilization of power control electric power system.
The utility model object is achieved through the following technical solutions:
The centralized direct current microgrid of a kind of LED electric power system, comprises online electrical network module, multiple power storage module, multiple LED load blocks, multiple wind power generation module, multiple photovoltaic generating module, multiple fuel cell module, LED direct current microgrid electric power system administration module and power supply buses; Power supply buses comprises positive electrode bus and negative pole bus;
Online electrical network module comprises online electrical network submodule, isolated island switch and bidirectional power conversion module; Online electrical network submodule is that three inputs of isolated island switch are connected to the three-phase of online electrical network submodule at the three phase network of operation; Bidirectional power conversion submodule has comprised filter capacitor, inductance and three-phase full-controlled bridge, bidirectional power conversion submodule has three three-phase input ends and two positive-negative output ends, three inputs are connected respectively three outputs of isolated island switch, and the positive-negative output end of bidirectional power conversion submodule is connected to positive electrode bus and the negative pole bus of power supply buses;
Respectively and be connected on power supply buses, each power storage module comprises accumulator and charge-discharge circuit module to multiple power storage modules; Charge-discharge circuit module is Bidirectional up-down volt circuit;
Multiple LED load blocks respectively and be connected on power supply buses;
Respectively and be connected on power supply buses, each fuel cell module comprises fuel cell submodule and boost module to multiple fuel cell modules, and fuel cell submodule is connected on power supply buses by boost module; Fuel cell submodule is selected Proton Exchange Membrane Fuel Cells; Boost module select Boost circuit or Buck ?Boost circuit;
Respectively and be connected on power supply buses, each photovoltaic generating module comprises solar energy module and boost module to multiple photovoltaic generating modules, and sun can module be connected on power supply buses by boost module; Boost module adopt Boost circuit or Buck ?Boost circuit;
Respectively and be connected on power supply buses, each wind power generation module comprises blower fan module and three-phase PWM rectifier power supply module to multiple wind power generation modules, and blower fan module is connected on power supply buses by three-phase PWM rectifier power supply module;
LED direct current microgrid power management module comprises data acquisition module and computer; Data acquisition module is mainly being made up of voltage sensor and current sensor; Data acquisition module is connected with island protect switch, multiple energy storage module, multiple LED load blocks, power supply buses, multiple fuel cell module, multiple photovoltaic generating module and multiple wind power generation module by control line respectively; Data acquisition module is connected with computer.
For further realizing the utility model object, described isolated island switch is threephase switch device, three-phase breaker or three-phase electrical relay in electrical network.
Described accumulator is made up of storage battery or super capacitor.
Described charge-discharge circuit module select two-way Buck ?Boost circuit, Cuk circuit, Sepic circuit or Zeta circuit.
Described three-phase PWM rectifier power supply module is Three-Phase PWM Rectifier.
Described blower fan module is wind-driven generator.
Described solar energy module is photovoltaic solar panel.
Described multiple photovoltaic generating module and multiple wind power generation module are installed on respectively LED load blocks both sides.
When positive and negative busbar output voltage electric current is too high or too low time, by computer calculate and regulate modules according to described sequencing by positive and negative busbar output voltage current stabilization in normal operating conditions, modules is adjusted to steady-working state separately; Described LED direct current microgrid electric power system administration module, and the various supplemental characteristics of power supply are shown on computers.
The utility model is applicable to the systems such as LED street lamp, can replace the form of traditional single lamp list power supply, realize LED lamp separated with power supply, by centralized machine room to LED lamp centrally connected power supply.
The utility model considers that extensive LED lamp load is all out of doors, in order to give full play to as the advantage of the green energy resource such as solar energy and wind energy, and solar energy and wind energy can directly produce direct current, can avoid direct current to become and exchange, exchange the energy loss that straightens again stream, propose to gather by power management module total load amount and the solar energy of LED load blocks, wind energy, chemical energy, the energy that battery pack etc. produce, realizes rational allocation; Pay the utmost attention under the prerequisite of wind energy and solar energy, realize electrical network module, the reasonable utilization of energy storage module and fuel cell module.
Compared with prior art, the utlity model has following advantage and effect:
1) under same power condition, than the light fixture of an integrated power supply in existing each LED lamp, cost.
2) power supply is separated with LED lamp, light fixture volume is reduced greatly, Design of Luminaires is more flexible, and can avoid the waste of the lamp package causing in short-term than LED lamp when power source life;
3) power supply also makes the heat-dissipating space of LED lamp become large with separating of LED lamp, has extended the life-span of LED lamp;
4) the green direct current micro-grid system that the module such as wind energy and solar energy forms, by the dispatching distribution of reasonable control micro-grid system energy, can solve the demand of LED lamp load, can reduce again in traditional electric power system, AC energy changes into the energy loss of direct current energy.
Accompanying drawing explanation
Fig. 1 is the LED light fixture block diagram of traditional single lamp list supply power mode.
Fig. 2 is the framework schematic diagram of the centralized direct current microgrid of a kind of LED electric power system in the utility model embodiment.
Embodiment
For understanding better the utility model, below in conjunction with accompanying drawing, the utility model is further described, but execution mode of the present utility model is not limit so.
As shown in Figure 2, the centralized direct current microgrid of a kind of LED electric power system, comprises online electrical network module 1, multiple power storage module 2, multiple LED load blocks 3, multiple wind power generation module 7, multiple photovoltaic generating module 6, multiple fuel cell module 5, LED direct current microgrid electric power system administration module 8 and power supply buses 4;
Online electrical network module comprises online electrical network submodule 11, isolated island switch 12 and bidirectional power conversion module 13; Wherein, online electrical network submodule 11 is that isolated island switch 12 is threephase switch device in electrical network at the three phase network of operation, three-phase breaker or three-phase electrical relay, and 12 3 inputs of isolated island switch are connected to the three-phase of online electrical network submodule 11; Bidirectional power conversion submodule 13 has comprised filter capacitor, inductance and three-phase full-controlled bridge, for the bi-directional conversion of energy, bidirectional power conversion submodule 13 has three three-phase input ends and two positive-negative output ends, three inputs are connected respectively three outputs of isolated island switch 12, and the positive-negative output end of bidirectional power conversion submodule 13 is connected to positive electrode bus and the negative pole bus of power supply buses 4.
Multiple power storage modules are also connected on power supply buses 4, and each power storage module 2 comprises accumulator and charge-discharge circuit module; Accumulator is made up of storage battery or super capacitor, and charge-discharge circuit module is Bidirectional up-down volt circuit, and charge-discharge circuit module can be selected two-way Buck ?Boost circuit, Cuk circuit, and Sepic circuit, Zeta circuit, realizes the energy exchange on storage battery and electrical network.
Respectively and be connected on power supply buses 4, each LED load blocks 3 comprises constant flow module and LED lamp group to multiple LED load blocks; LED load blocks is also connected on power supply buses 4, and its formation is that after the power supply of traditional LED street lamp removes, its input is directly connected on power supply buses 4.
Respectively and be connected on power supply buses 4, each fuel cell module 5 comprises fuel cell submodule and boost module to multiple fuel cell modules, and fuel cell submodule is connected on power supply buses 4 by boost module; Fuel cell submodule can be selected Proton Exchange Membrane Fuel Cells (PEMFC); Boost module can select Boost circuit or Buck ?Boost circuit etc. there is the circuit of boost function.
Multiple photovoltaic generating modules are also connected on power supply buses 4, and each photovoltaic generating module 6 comprises solar energy module and boost module, and sun can module be connected on power supply buses 4 by boost module; Boost module can adopt Boost circuit or Buck ?Boost circuit etc. there is the circuit of boost function; Solar energy module is photovoltaic solar panel on the market, as the solar modules of First solar company of the U.S..
Multiple wind power generation modules are also connected on power supply buses 4, and each wind power generation module 7 comprises blower fan module and three-phase PWM rectifier power supply module, and blower fan module is connected on power supply buses 4 by three-phase PWM rectifier power supply module; Three-phase PWM rectifier power supply module is made up of Three-Phase PWM Rectifier, blower fan module is general wind-driven generator, wind-driven generator is exported to energy after three-phase PWM rectifier power supply module by three-phase, three-phase PWM rectifier power supply module is after its rectification, is connected to respectively on the positive and negative busbar of power supply buses 4 carries out Energy Transfer by output positive and negative terminal.
LED direct current microgrid power management module 8 comprises data acquisition module and computer, data acquisition module is mainly being made up of voltage sensor and current sensor, data acquisition module is connected with island protect switch, multiple energy storage module 2, multiple LED load blocks 3, power supply buses 4, multiple fuel cell module 5, multiple photovoltaic generating module 6 and multiple wind power generation module 7 by control line respectively, data acquisition module by its voltage sensor and current sensor respectively to island protect switch, multiple energy storage modules 2, multiple LED load blocks 3, power supply buses 4, multiple fuel cell modules 5, after the data of the current/voltage of multiple photovoltaic generating modules 6 and multiple wind power generation module 7 gather, send to computer and carry out integrated treatment, computer expert crosses after control software Intelligent treatment data, formulate control program, send to island protect switch, multiple energy storage modules 2, multiple LED load blocks 3, power supply buses 4, multiple fuel cell modules 5, multiple photovoltaic generating modules 6 and multiple wind power generation module 7, decide each link whether to participate in work, and the electric current and voltage size of each link.Final realization meeting under the prerequisite of the normal work of each LED module, carries out unnecessary energy the storage of storage battery or feeds back to electrical network; In wind energy, under the condition of the green energy resource deficiencies such as solar energy, to LED load blocks, guarantee that it normally works from electrical network conveying capacity.
Multiple photovoltaic generating modules 6 and multiple wind power generation module 7 are installed on respectively LED load blocks 3 both sides and are beneficial to the region of collecting folk songs and adopting solar energy, and described in other, modules forms power supply room, is placed in the middle of the circuit of all LED lamp groups that this system will power.
The utility model gathers the total load amount of LED load blocks and the energy that above-mentioned modules produces by LED direct current microgrid power management module 8, realizes rational allocation; Pay the utmost attention under the prerequisite of wind energy and solar energy, realize electrical network module, the reasonable utilization of energy storage module and fuel cell module.
The centralized direct current microgrid of a kind of LED electric power system method for controlling power supply: output voltage electric current, the electric current and voltage of LED load blocks 3 and the electric current and voltage of electrical network module 1 of output voltage electric current on data collecting module collected positive output bus and negative output bus, multiple wind power generation module 7, multiple photovoltaic generating module 6, the output voltage electric current of multiple fuel cell module 5, multiple power storage modules 2;
Send data to computer again, computer carries out data processing, pay the utmost attention to and utilize wind energy and sun the subject of knowledge and the object of knowledge produce power, be that wind energy and solar energy are according to weather and fixed energy, in the time that its gross energy producing exceedes described LED load request, computer sends control signal, by control line, signal is inputted to power storage module 2, open the stored energy switch of energy storage module 2, unnecessary energy is stored, when energy storage module has been stored in full situation, computer expert crosses control line and transmits signals to isolated island switch 12, control module is opened isolated island switch 12, excess energy is fed back to electrical network, according to power calculation, when described wind energy and sun the subject of knowledge and the object of knowledge produce power are during lower than described LED load request, after calculating, opens by computer the energy release-push of energy storage module 2 by control line, the energy of energy storage module 2 is discharged to LED load blocks 3, in the time that the energy of energy storage module 2 still cannot meet the electrical energy demands of LED load blocks 3, computer expert crosses control line and transmits signals to fuel cell module 5 and isolated island switch 12, controls fuel cell module 5 and electrical network LED load blocks is powered.
For guaranteeing whole system safe and stable operation, power-supply management system also detects positive and negative busbar output voltage electric current, when positive and negative busbar output voltage electric current occurs opening circuit or when circuit phenomenon, by the data value of modules, location accident point rapidly, close in time the module that causes accident, avoid spreading of accident.
When positive and negative busbar output voltage electric current occurs too high or too low time, by computer calculate and regulate modules according to described sequencing by positive and negative busbar output voltage current stabilization in normal operating conditions, modules is adjusted to steady-working state separately; Described LED direct current microgrid electric power system administration module, and the various supplemental characteristics of power supply are shown on computers.
The centralized direct current microgrid of the utility model LED electric power system is controlled by LED direct current microgrid power management module 8, realize the reasonable utilization to modules energy, pay the utmost attention under wind energy and solar energy prerequisite, in the situation that electric energy is unnecessary, realizes power storage or return to electrical network; The in the situation that of electric energy deficiency, by accumulation power supply, fuel cell-powered or mains supply, and the monitoring realizing LED by LED direct current microgrid power management module 8.
The utility model power supply separates with LED lamp, and light fixture volume is reduced greatly, and Design of Luminaires is more flexible, and can avoid the waste of the lamp package causing in short-term than LED lamp when power source life; Power supply also makes the heat-dissipating space of LED lamp become large with separating of LED lamp in addition, has extended the life-span of LED lamp; The green direct current micro-grid system that the module such as wind energy and solar energy forms in addition, by the dispatching distribution of reasonable control micro-grid system energy, can solve the demand of LED lamp load, can reduce again in traditional electric power system, AC energy changes into the energy loss of direct current energy.
Claims (8)
1. the centralized direct current microgrid of a LED electric power system, is characterized in that: comprise online electrical network module, multiple power storage module, multiple LED load blocks, multiple wind power generation module, multiple photovoltaic generating module, multiple fuel cell module, LED direct current microgrid electric power system administration module and power supply buses; Power supply buses comprises positive electrode bus and negative pole bus;
Online electrical network module comprises online electrical network submodule, isolated island switch and bidirectional power conversion module; Online electrical network submodule is that three inputs of isolated island switch are connected to the three-phase of online electrical network submodule at the three phase network of operation; Bidirectional power conversion submodule has comprised filter capacitor, inductance and three-phase full-controlled bridge, bidirectional power conversion submodule has three three-phase input ends and two positive-negative output ends, three inputs are connected respectively three outputs of isolated island switch, and the positive-negative output end of bidirectional power conversion submodule is connected to positive electrode bus and the negative pole bus of power supply buses;
Respectively and be connected on power supply buses, each power storage module comprises accumulator and charge-discharge circuit module to multiple power storage modules; Charge-discharge circuit module is Bidirectional up-down volt circuit;
Multiple LED load blocks respectively and be connected on power supply buses;
Respectively and be connected on power supply buses, each fuel cell module comprises fuel cell submodule and boost module to multiple fuel cell modules, and fuel cell submodule is connected on power supply buses by boost module; Fuel cell submodule is selected Proton Exchange Membrane Fuel Cells; Boost module select Boost circuit or Buck ?Boost circuit;
Respectively and be connected on power supply buses, each photovoltaic generating module comprises solar energy module and boost module to multiple photovoltaic generating modules, and sun can module be connected on power supply buses by boost module; Boost module adopt Boost circuit or Buck ?Boost circuit;
Respectively and be connected on power supply buses, each wind power generation module comprises blower fan module and three-phase PWM rectifier power supply module to multiple wind power generation modules, and blower fan module is connected on power supply buses by three-phase PWM rectifier power supply module;
LED direct current microgrid power management module comprises data acquisition module and computer; Data acquisition module is mainly being made up of voltage sensor and current sensor; Data acquisition module is connected with island protect switch, multiple energy storage module, multiple LED load blocks, power supply buses, multiple fuel cell module, multiple photovoltaic generating module and multiple wind power generation module by control line respectively; Data acquisition module is connected with computer.
2. the centralized direct current microgrid of a kind of LED according to claim 1 electric power system, is characterized in that: described isolated island switch is threephase switch device, three-phase breaker or three-phase electrical relay in electrical network.
3. the centralized direct current microgrid of LED according to claim 1 electric power system, is characterized in that: described accumulator is made up of storage battery or super capacitor.
4. the centralized direct current microgrid of LED according to claim 1 electric power system, is characterized in that: described charge-discharge circuit module select two-way Buck ?Boost circuit, Cuk circuit, Sepic circuit or Zeta circuit.
5. the centralized direct current microgrid of LED according to claim 1 electric power system, is characterized in that: described three-phase PWM rectifier power supply module is Three-Phase PWM Rectifier.
6. the centralized direct current microgrid of LED according to claim 1 electric power system, is characterized in that: described blower fan module is wind-driven generator.
7. the centralized direct current microgrid of a kind of LED according to claim 1 electric power system, is characterized in that: described solar energy module is photovoltaic solar panel.
8. the centralized direct current microgrid of LED according to claim 1 electric power system, is characterized in that: described multiple photovoltaic generating modules and multiple wind power generation module are installed on respectively LED load blocks both sides.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103547043A (en) * | 2013-11-07 | 2014-01-29 | 东莞市石龙富华电子有限公司 | Power supply system and power supply control method of LED centralized direct-current micro-grid |
| US11172557B2 (en) | 2016-03-07 | 2021-11-09 | Intelligent Growth Solutions Limited | Controllable power and lighting system |
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2013
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103547043A (en) * | 2013-11-07 | 2014-01-29 | 东莞市石龙富华电子有限公司 | Power supply system and power supply control method of LED centralized direct-current micro-grid |
| CN103547043B (en) * | 2013-11-07 | 2015-10-28 | 东莞市石龙富华电子有限公司 | A kind of centralized direct-current micro-grid electric power system of LED and method for controlling power supply |
| US11172557B2 (en) | 2016-03-07 | 2021-11-09 | Intelligent Growth Solutions Limited | Controllable power and lighting system |
| AU2017230924B2 (en) * | 2016-03-07 | 2021-12-23 | Intelligent Growth Solutions Limited | Controllable power and lighting system |
| AU2017230924B9 (en) * | 2016-03-07 | 2022-01-06 | Intelligent Growth Solutions Limited | Controllable power and lighting system |
| RU2765984C2 (en) * | 2016-03-07 | 2022-02-07 | Интеллиджент Гроут Солюшнз Лимитед | Controlled power and lighting system |
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