CN202586481U - Micro electrical network intelligent balanced charging and power supply system - Google Patents
Micro electrical network intelligent balanced charging and power supply system Download PDFInfo
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- CN202586481U CN202586481U CN2012202019530U CN201220201953U CN202586481U CN 202586481 U CN202586481 U CN 202586481U CN 2012202019530 U CN2012202019530 U CN 2012202019530U CN 201220201953 U CN201220201953 U CN 201220201953U CN 202586481 U CN202586481 U CN 202586481U
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- 239000003990 capacitor Substances 0.000 claims abstract description 21
- 230000005611 electricity Effects 0.000 claims abstract description 21
- 230000005622 photoelectricity Effects 0.000 claims abstract description 18
- 238000010248 power generation Methods 0.000 claims abstract description 14
- 230000003068 static effect Effects 0.000 claims abstract description 12
- 238000009434 installation Methods 0.000 claims description 6
- 230000009466 transformation Effects 0.000 abstract 1
- 238000004146 energy storage Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
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- 238000005516 engineering process Methods 0.000 description 3
- 238000005070 sampling Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 230000001172 regenerating effect Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
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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
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
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Abstract
本实用新型提出一种微电网智能平衡充电供电系统，由市电、光电、风电、蓄电池和柴油机发电共五路电源通过智能平衡供电装置给负载供电；光电通过DC/DC整流和DC/AC逆变后提供与市电同频同相的交流电；风电通过AC/DC整流和DC/AC逆变后提供与市电同频同相的交流电；多余的光电和风电分别通过超级电容预储能后由超级电容智能平衡交替给蓄电池充电；智能平衡供电装置检测五路电源的电压电流，并根据负载电力需求，智能控制五路静态交流切换开关的切换，给负载供电，其中五路电源的使用优先级别依次为光电、风电、蓄电池、市电、柴油机发电。本实用新型实现市电、光电、风电、柴油机发电以及蓄电池储电的智能切换给负载供电，实现不间断供电。
The utility model proposes a micro-grid intelligent balanced charging and power supply system, in which a total of five power sources including city power, photoelectricity, wind power, storage battery and diesel engine are used to supply power to the load through an intelligent balanced power supply device; the photoelectricity is powered by DC/DC rectification and DC/AC inverter After transformation, AC power with the same frequency and phase as the mains power is provided; wind power is provided with AC power with the same frequency and phase as the mains power after AC/DC rectification and DC/AC inversion; redundant photoelectricity and wind power are pre-stored by supercapacitors and then stored by supercapacitors. Capacitor intelligent balance charges the battery alternately; the intelligent balance power supply device detects the voltage and current of the five-way power supply, and intelligently controls the switching of the five-way static AC switch according to the power demand of the load to supply power to the load. The priority levels of the five-way power supply are in order Generate electricity for photovoltaics, wind power, storage batteries, mains power, and diesel engines. The utility model realizes the intelligent switching of mains power, photoelectric power, wind power, diesel engine power generation and battery power storage to supply power to loads, and realizes uninterrupted power supply.
Description
Technical field
The utility model relates to little electric network source management and control technical field, is specially a kind of little electrical network intelligent balance charging electric power system, through with wind energy, optical energy power and generator or civil power complementation intelligent power supply.
Background technology
The little electrical network of intelligence is a kind of intelligentized distribution network; Be applicable to the intelligent source demand of distributed energy resource diversification control; Mainly comprise photovoltaic, waterpower, biology, wind energy, small generator etc., through the distribution network technology that combines with the electrical network Based Intelligent Control.
At present, generation of electricity by new energy commonly used mainly contains dual mode, and the one, the new forms of energy power generation is after power plant's pattern of i.e. grid side application directly is incorporated into the power networks in inversion; The 2nd,, generate power for their own use, promptly after the generation of electricity by new energy because its instability, supply load to use so adopt first electric power storage to discharge again after the inversion.
In wind and solar hybrid generating system, because receive extraneous sunshine, the influence of temperature and wind-force etc., its generating power output has instability and unpredictability, therefore disposes corresponding batteries to store energy system and seems quite important.At present, lead acid accumulator is an energy storage device commonly used in the wind and solar hybrid generating system, but shortcoming such as that its exists is short like cycle life, power density is low, maintenance is big.Prior wind and solar hybrid generating system receives the influence of natural causes such as weather; Can cause storage battery often to be in the little state of charging and discharging currents; Accelerated ager process, shortened recycling the life-span, this is with regard to the corresponding operating cost that increases wind and solar hybrid generating system; Therefore, the storage of electric energy is the wind and solar hybrid generating system problem demanding prompt solution.Super capacitor is emerging in the last few years a kind of electric power energy storage device; It has the life-span of recycling long, operating temperature range is wide, the speed that discharges and recharges is fast, power density is big; Characteristics such as energy density is relatively low, the above advantage of super capacitor just in time can be carried out effective complementation with the shortcoming of storage battery.
To the These characteristics of battery energy storage, ultracapacitor energy storage, constantly there is the expert to propose to adopt storage battery and ultracapacitor to mix the mode of the store electrical energy of using.Super capacitor has the certain energy storage capacity can reduce the charging and discharging of accumulator cycle-index, improves the stability of system, effectively suppresses the impact of current fluctuation to storage battery, and the power output capacity that improves energy storage device is simple and reliable.
At present, existing new technology system and product defects are:
1, new forms of energy electric power supplies the charger charging through DC/DC or through inversion AC/DC, because the unsteadiness of output power is feasible high to the characteristic requirements of storage battery, has a strong impact on charging effect and accumulator property and life-span.
2, the generation of electricity by new energy of prior art, electric power storage, three links of power supply are order serial single task working methods; Storage battery can not be supplied power in the electric power storage process; Shortage will appear in load electricity consumption this moment, again can not electric power storage in the power supply process, and the electric energy that this moment, new forms of energy electric power was sent will be wasted.
3, when honourable electricity and storage battery can't satisfy electric energy loaded demand, how to introduce civil power and switch and use the proof load uninterrupted power supply.
Summary of the invention
The technical problem that solves
For solve in the prior art storage battery useful life short and under low light condition problems such as charging ability deficiency, waste of energy, the utility model proposes a kind of little electrical network intelligent balance electric power system of charging.
Technical scheme
The technical scheme of the utility model is:
Said a kind of little electrical network intelligent balance charging electric power system is characterized in that: by civil power, photoelectricity, wind-powered electricity generation, storage battery and diesel power generation totally five road power supplys through intelligent balance electric supply installation powering load; Photoelectricity provide after through DC/DC rectification and DC/AC inversion and civil power with the alternating current of homophase frequently; Wind-powered electricity generation provide after through AC/DC rectification and DC/AC inversion and civil power with the alternating current of homophase frequently; Storage battery provide after through the DC/AC inversion and civil power with the alternating current of homophase frequently; Diesel power generation provides after AC/DC rectification and DC/AC inversion and the alternating current of civil power with the frequency homophase; Unnecessary photoelectricity and wind-powered electricity generation respectively through the super capacitor energy pre-storage, are then alternately charged a battery by the super capacitor intelligent balance earlier; The intelligent balance electric supply installation detects five tunnel power source voltage electric currents; And according to the load electric demand; The switching of Based Intelligent Control five road static AC diverter switches, powering load, wherein the use priority level of five road power supplys is followed successively by photoelectricity, wind-powered electricity generation, storage battery, civil power, diesel power generation.
Beneficial effect
The beneficial effect of the utility model is: wind, photoelectricity to charge in batteries adopt the super capacitor energy pre-storage; Intelligent balance alternately charges a battery; Make the generation of electricity by new energy direct inverse become the user load power supply simultaneously, cut down the number of intermediate links and conversion times, improve utilization rate of electrical; Reduce system's scales of investment such as outfit of storage battery; And introduce civil power and diesel power generation, realize that the intelligence of civil power, photoelectricity, wind-powered electricity generation, diesel power generation and storage battery accumulate is switched powering load, realize uninterrupted power supply.
Adopt bank of super capacitors as the NE BY ENERGY TRANSFER device between solar panel, wind-driven generator and the storage battery; Improved the utilance of new forms of energy electric energy greatly; Simultaneously intelligent little electrical network multiple power supplies intelligence is switched powering load; To the important load continued power, avoid fitful power when helping electrical network catastrophe, help optimization utilization and electrical network saving energy and decreasing loss of regenerative resource etc. the direct influence of user's quality of power supply on every side.Reduce the risk of massive blackout, the wide area of the realization energy is distributed rationally and the intensification of regenerative resource is developed.
Description of drawings
Fig. 1 is the whole theory diagram of the utility model
Fig. 2 is many power supply smarts charging principle figure
Fig. 3 is five road power supply smart balanced feeding circuit diagrams
Fig. 4 is a super capacitance storage battery hybrid energy-storing circuit diagram
Embodiment
Below in conjunction with specific embodiment the utility model is described.
With reference to accompanying drawing 1, adopt civil power, photoelectricity, wind-powered electricity generation, storage battery and diesel power generation totally five road power supplys in the present embodiment, five road power supplys are through intelligent balance electric supply installation powering load.Photoelectricity provide after through DC/DC rectification and DC/AC inversion and civil power with the alternating current of homophase frequently; Wind-powered electricity generation provide after through AC/DC rectification and DC/AC inversion and civil power with the alternating current of homophase frequently; Storage battery provide after through the DC/AC inversion and civil power with the alternating current of homophase frequently; Diesel power generation provides after AC/DC rectification and DC/AC inversion and the alternating current of civil power with the frequency homophase.Unnecessary photoelectricity and wind-powered electricity generation respectively through the super capacitor energy pre-storage, are then alternately charged a battery by the super capacitor intelligent balance earlier.
With reference to accompanying drawing 3, the intelligent balance electric supply installation is made up of five road parallel connection power supplies input static AC diverter switch, voltage sample unit and driving governor.Civil power M1 is through manual switch 121; The first via input that connects static AC diverter switch 14; Photoelectricity M2 is through manually switch 122, DC/DC rectifier 62, DC/AC inverter 132 connect the second road input of static AC diverter switch 14; Wind-powered electricity generation M3 is through AC/DC72 rectifier, DC/AC133 inverter; Connect the Third Road input of static AC diverter switch 14, diesel power generation M4 connects the four road input of static AC diverter switch 14 through AC/DC73 rectifier, DC/AC134 inverter; Storage battery connects the five road input of static AC diverter switch 14 through the DC/AC135 inverter; Simultaneously every road power supply M1, M2, M3, M4, M5 input and power output end connects voltage sample unit 15, voltage sample unit 15 connects driving governor 16, driving governor 16 connects five road static AC diverter switches 14, controls the switching of each road power supply.This five road static ACs diverter switch 14 is the diverter switch of sampling high-speed thyristor commutation circuit.Voltage sample unit 15 detects five tunnel power source voltage; And according to the load electric demand; The switching of Based Intelligent Control five road static AC diverter switches, powering load, wherein the use priority level of five road power supplys is followed successively by photoelectricity, wind-powered electricity generation, storage battery, civil power, diesel power generation.
Super capacitor can absorb with intensity of illumination, wind-force size the significantly energy output of change, plays cushioning effect, and the little electric weight when gentle breeze, low light condition can't save, and can temporarily store through super capacitor, avoids energy waste.Realize circuit with reference to accompanying drawing 2,31 samplings input in the single-chip microcomputer 4 photovoltaic array 1 through voltage-current sensor, and single-chip microcomputer 4 has been controlled the DC chopped-wave 51 of MPPT effect according to the working condition output control signal of photovoltaic array; Realization is to the maximal power tracing of photovoltaic array 1; Because luminous energy is extremely unstable, needs the adjusting through the DC/DC61 converter, the DC chopped-wave output connects the DC/DC61 rectifier; DC/DC output electrical power storage is in super capacitor 81; Under low light condition, the output voltage of solar panels can be higher than the minimum output voltage of super capacitor group, guarantees that electric energy is absorbed storage by bank of super capacitors.32 samplings input in the single-chip microcomputer 4 wind-driven generator 2 through voltage-current sensor; Single-chip microcomputer 4 has been controlled the DC chopped-wave 52 of MPPT effect according to the working condition output control signal of wind-driven generator; Realization because wind energy is extremely unstable, needs the adjusting through the AC/DC71 converter to the maximal power tracing of wind energy; The DC chopped-wave output connects the AC/DC71 rectifier, and AC/DC output electrical power storage is in super capacitor 82.The electric current and voltage of storage battery sample circuit 11 detection at any time storage batterys 10 is connected to the input of single-chip microcomputer 4; Single-chip microcomputer is according to 11,31,32 state information; Export control signal control selector switch 9, selector switch 9 connects output, bank of super capacitors 81, bank of super capacitors 82 and storage battery 10, the realization of single-chip microcomputers 4 and alternately charges to storage battery.
Fig. 4 is a super capacitance storage battery hybrid energy-storing circuit diagram, and ultracapacitor is parallelly connected through Book-Boost type bidirectional power converter with storage battery, and wherein R is a current-limiting resistance, as not adding current-limiting resistance, is equivalent to short circuit during the super capacitor initial charge.Can adopt the 1000W iodine-tungsten lamp to make current-limiting resistance; Its cold-state resistance is little nearly 10 times than hot resistance; Meet the requirement that should reduce current-limiting resistance after capacitance voltage rises; And the super circuit device group of two-way connects Book-Boost type bidirectional power converter through selector switch, realizes that intelligence alternately charges a battery.
Claims (1)
1. little electrical network intelligent balance charging electric power system is characterized in that: by civil power, photoelectricity, wind-powered electricity generation, storage battery and diesel power generation totally five road power supplys through intelligent balance electric supply installation powering load; Photoelectricity provide after through DC/DC rectification and DC/AC inversion and civil power with the alternating current of homophase frequently; Wind-powered electricity generation provide after through AC/DC rectification and DC/AC inversion and civil power with the alternating current of homophase frequently; Storage battery provide after through the DC/AC inversion and civil power with the alternating current of homophase frequently; Diesel power generation provides after AC/DC rectification and DC/AC inversion and the alternating current of civil power with the frequency homophase; Unnecessary photoelectricity and wind-powered electricity generation are respectively through alternately being charged a battery by the super capacitor intelligent balance behind the super capacitor energy pre-storage; The intelligent balance electric supply installation detects five tunnel power source voltage electric currents; And according to the load electric demand; The switching of Based Intelligent Control five road static AC diverter switches, powering load, wherein the use priority level of five road power supplys is followed successively by photoelectricity, wind-powered electricity generation, storage battery, civil power, diesel power generation.
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| CN2012202019530U CN202586481U (en) | 2012-05-07 | 2012-05-07 | Micro electrical network intelligent balanced charging and power supply system |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103457296A (en) * | 2013-08-08 | 2013-12-18 | 许继集团有限公司 | Method for switching independent operation micro-grid master control power sources |
| CN103501006A (en) * | 2013-09-26 | 2014-01-08 | 北京北变微电网技术有限公司 | Centralized control method for microgrid |
| CN103616822A (en) * | 2013-11-27 | 2014-03-05 | 中国航天科技集团公司第五研究院第五一三研究所 | High-voltage solid-state power distribution control system suitable for multi-source input |
| CN104037774A (en) * | 2013-03-06 | 2014-09-10 | 珠海优特电力科技股份有限公司 | Method and system for controlling devices in micro grid based on priority |
| CN105071456A (en) * | 2015-07-21 | 2015-11-18 | 北京布姆国际科技有限公司 | Solar power supply control system |
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- 2012-05-07 CN CN2012202019530U patent/CN202586481U/en not_active Expired - Fee Related
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| CN104037774A (en) * | 2013-03-06 | 2014-09-10 | 珠海优特电力科技股份有限公司 | Method and system for controlling devices in micro grid based on priority |
| CN104037774B (en) * | 2013-03-06 | 2016-03-02 | 珠海优特电力科技股份有限公司 | Based on equipment regulate and control method and system in the micro-capacitance sensor of priority |
| CN103457296B (en) * | 2013-08-08 | 2016-02-24 | 许继集团有限公司 | A kind of independent operating micro-grid master control power-supply switching method |
| CN103457296A (en) * | 2013-08-08 | 2013-12-18 | 许继集团有限公司 | Method for switching independent operation micro-grid master control power sources |
| CN103501006B (en) * | 2013-09-26 | 2015-11-04 | 北京北变微电网技术有限公司 | Micro-capacitance sensor centralized control method |
| CN103501006A (en) * | 2013-09-26 | 2014-01-08 | 北京北变微电网技术有限公司 | Centralized control method for microgrid |
| CN103616822A (en) * | 2013-11-27 | 2014-03-05 | 中国航天科技集团公司第五研究院第五一三研究所 | High-voltage solid-state power distribution control system suitable for multi-source input |
| CN103616822B (en) * | 2013-11-27 | 2016-05-04 | 中国航天科技集团公司第五研究院第五一三研究所 | Be applicable to the high-voltage solid-state power distribution control system of multi-source input |
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| CN105071456A (en) * | 2015-07-21 | 2015-11-18 | 北京布姆国际科技有限公司 | Solar power supply control system |
| CN107453487A (en) * | 2017-06-12 | 2017-12-08 | 深圳清华大学研究院 | The control method of family expenses energy-storage system and family expenses energy-storage system |
| CN107276210A (en) * | 2017-06-17 | 2017-10-20 | 安徽南国机电科技发展有限公司 | A kind of economizing type energy compensating system |
| CN111566888A (en) * | 2017-10-20 | 2020-08-21 | 康明斯发电机有限公司（英国） | Hybrid universal load regulator |
| CN111566888B (en) * | 2017-10-20 | 2023-05-05 | 康明斯发电机有限公司（英国） | Hybrid universal load regulator |
| CN111082507A (en) * | 2019-12-27 | 2020-04-28 | 北京双登慧峰聚能科技有限公司 | Hybrid power supply system and hybrid power supply method for 5G base station |
| CN111082507B (en) * | 2019-12-27 | 2022-03-22 | 北京双登慧峰聚能科技有限公司 | Hybrid power supply method for 5G base station |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121205 Termination date: 20150507 |
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| EXPY | Termination of patent right or utility model |