CN201323453Y - Renewable energy micro-grid - Google Patents

Renewable energy micro-grid Download PDF

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Publication number
CN201323453Y
CN201323453Y CNU2008202051084U CN200820205108U CN201323453Y CN 201323453 Y CN201323453 Y CN 201323453Y CN U2008202051084 U CNU2008202051084 U CN U2008202051084U CN 200820205108 U CN200820205108 U CN 200820205108U CN 201323453 Y CN201323453 Y CN 201323453Y
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CN
China
Prior art keywords
generation unit
power generation
power
biogas
micro
Prior art date
Application number
CNU2008202051084U
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Chinese (zh)
Inventor
康龙云
张彦宁
吴捷
陈渊睿
郭红霞
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华南理工大学
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Priority to CNU2008202051084U priority Critical patent/CN201323453Y/en
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Publication of CN201323453Y publication Critical patent/CN201323453Y/en

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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/70Wind energy
    • Y02E10/76Power conversion electric or electronic aspects
    • Y02E10/763Power conversion electric or electronic aspects for grid-connected applications
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P80/00Climate change mitigation technologies for sector-wide applications
    • Y02P80/10Efficient use of energy
    • Y02P80/14District level solutions, i.e. local energy networks

Abstract

The utility model discloses a renewable energy micro-grid, comprising a solar energy generation unit, a wind power generation unit and a biogas power generation unit; the solar energy generation unit, the wind power generation unit and the biogas power generation unit are connected to a DC bus and a system controller, and the system controller computes and regulates the power output of the biogas power generation unit by checking the wind power generation unit and the solar energy generation unit. By adopting wind, light and biogas, the utility model is less affected by weather, is capable of supplying power for a whole day, has high power quality by controlling the voltage and output power of the micro-grid through biogas generation, and is less depended on the conventional energy and has little pollution to environment.

Description

A kind of regenerative resource micro power network

Technical field

The invention belongs to micro power network basic unit and form structure, it relates to the combined system of the different power generation characteristics energy sources of micro power network.

Background technology

Micro power network is meant the system that the generating resource (for example Blast Furnace Top Gas Recovery Turbine Unit (TRT) such as generating equipment of powering voluntarily or stand-by generator group, device of solar generating, wind power plant, diesel generation equipment) of the dispersion that will have in certain zone is tied, it can be powered to the user, also can pass through distribution link and the parallel running of trunk large-scale power net.

Micro power network research bigger development has been arranged, as wind-driven generator, photovoltaic cell and diesel engine are micro power network (the Renewable Energy of the multi-energy complementation network architecture of power, Volume:9, Issue:1-4, September 12, pp.836-847,1996.), power plant (IEEE Transactions on Energy Conversion, Vol.18 that fuel cell and little steam turbine mix, No.2, June 2003.), blower fan and diesel engine mix power plant (IEEE Transactions on Energy Conversion, Vol.13, No.3, September 1998.)

In wind power generation, field of solar thermal power generation, Chinese patent ZL88202956.8, wind-powered electricity generation-light-electricity complementary device is combined as a whole above-mentioned two class Blast Furnace Top Gas Recovery Turbine Unit (TRT), a shared general purpose controller.

The micro power network energy source is generally regenerative resource (as wind-force, solar energy, tidal energy, geothermal energy) and conventional energy resource (as oil, coal) at present, and such micro power network development has such defective:

At first, this class micro power network contains conventional energy resource, can cause certain pollution to environment, and along with the constantly a large amount of of conventional energy resource consume, this class micro power network can constantly reduce.

Secondly, wind energy and luminous energy have features such as energy density is low, randomness strong, instability in the regenerative resource, forming micro power network or be connected in the process of carrying out power conversion with big electrical network, will inevitably influence the stability of system, cause production, transmission and the utilization ratio of electric energy to reduce, equipment component useful life shortens, even breaks down or burn.

At last, if only adopt honourable regenerative resource to form micro power network, this class electrical network restricts in weather, can not realize continuous round-the-clock power supply, and unit power construction cost cost height.

The utility model content

The purpose of this utility model is to provide at the defective of prior art the regenerative resource micro power network of a kind of high quality of power supply and lower cost.

Technical scheme of the present invention is:

A kind of regenerative resource micro power network system is characterized in that comprising solar power generation unit, wind power generation unit and biogas power generation unit; Solar power generation unit, wind power generation unit and biogas power generation unit all link to each other with system controller with dc bus, and system controller is exported by the power that detects wind power generation unit and solar power generation unit and calculated the power output of regulating the biogas power generation unit.

Further, also comprise combining inverter, combining inverter links to each other with dc bus, controlled by system controller.

Further, also comprise storage battery, storage battery links to each other with dc bus by the DC-DC converter that is subjected to system controller control.

The utility model is at first determined the wind energy and the solar energy content of micro power network location, become original determine solar energy and wind power generation capacity with unit power according to availability, on this basis, determine biogas (biomass energy) generate output, formed wind-light-biogas micro power network like this according to load.

Compared with prior art, the utlity model has following advantage:

At first, this regenerative resource micro power network has vast potential for future development, and it does not rely on conventional energy resource, and environmental pollution is little.

Secondly, this micro power network has adopted honourable biogas, is subjected to weather effect little, can round-the-clockly power, and controls the voltage and the power output of micro power network by controlling biogas power generation, has the very high quality of power supply.

At last, this micro power network unit power construction cost cost is lower than honourable micro power network, and power supply is stable.

Description of drawings

Fig. 1 is a schematic diagram of the present utility model.

Embodiment

Below in conjunction with accompanying drawing the utility model is done to describe in further detail.

As shown in Figure 1, a kind of regenerative resource micro power network system comprises solar power generation unit, wind power generation unit and biogas power generation unit; Solar power generation unit, wind power generation unit and biogas power generation unit all link to each other with system controller with dc bus, and system controller is exported by the power that detects wind power generation unit and solar power generation unit and calculated the power output of regulating the biogas power generation unit.

Wind turbine generator system controller obtains peak power output by the control generator speed, by the AC-DC converter output voltage is controlled at 500v again, the power of wind power generation unit is uncontrollable amount, and wind turbine generator system controller sends to system controller with voltage, electric current instantaneous state amount by communication network.

Solar battery array is controlled at 500v by the DC-DC converter with output voltage, and the solar-electricity pool controller carries out maximum power tracing control, and voltage, electric current instantaneous state amount are sent to system controller by communication network.

Oil-electric engine produces electric energy by burning biogas, by the AC/DC converter output voltage is controlled at 500v again, the biogas power generation machine controller carries out permanent rotating speed control and becomes power control, and voltage, electric current instantaneous state amount are sent to system controller by communication network.

Three generator unit output voltages are 500v with the dc bus voltage coupling all, are connected to together by dc bus (two DC power transmission line), have formed micro power network.At this moment wind power generation unit and solar power generation unit are when carrying out maximum power tracing control, their power output is a variable quantity, each generator unit all communicates contact with system controller, system controller is when detecting solar power generation unit and wind power generation unit instantaneous state amount, while detection load and dc bus instantaneous state amount, calculate the power that the biogas power generation unit need be exported, power instruction is sent to the biogas power generation machine controller, after the biogas power generation machine controller is received instruction, carry out power back-off control, so just can guarantee the maintenance constant voltage 500v of micro power network.

When wind power generation unit and solar power generation unit are not exported, can disconnect this two unit, the biogas power generation unit powers to micro power network alone.

When busbar voltage during greater than 500v, storage battery absorbs energy from electrical network, keeps DC bus-bar voltage to be stabilized in 500v, when busbar voltage during less than 500v, to electrical network output electric energy, is stabilized in 500v to keep DC bus-bar voltage.

Required greater than load when the micro power network generated output, and there is generating the biogas power generation unit during surplus, and combining inverter is started working, and to big electrical network power output, when the micro power network maximum generating watt takes less than load, combining inverter is from big electrical network absorbed power.

In general, the physical distance between the generator unit of micro power network is not far, can be connected with central controller by the controller of wire transmission with each generator unit, forms effective message transmission, Control Network.

Claims (3)

1, a kind of regenerative resource micro power network is characterized in that comprising solar power generation unit, wind power generation unit and biogas power generation unit; Solar power generation unit, wind power generation unit and biogas power generation unit all link to each other with system controller with dc bus, and system controller is exported by the power that detects wind power generation unit and solar power generation unit and calculated the power output of regulating the biogas power generation unit.
2, micro power network according to claim 1 is characterized in that also comprising combining inverter, and combining inverter links to each other with dc bus, controlled by system controller.
3, micro power network according to claim 2 is characterized in that also comprising storage battery, and storage battery links to each other with dc bus by the DC-DC converter that is subjected to system controller control.
CNU2008202051084U 2008-12-12 2008-12-12 Renewable energy micro-grid CN201323453Y (en)

Priority Applications (1)

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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2008202051084U CN201323453Y (en) 2008-12-12 2008-12-12 Renewable energy micro-grid

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Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101847878A (en) * 2010-06-07 2010-09-29 哈尔滨卓尔科技有限公司 Connected grid wind-light complementation control inverting device
CN101860270A (en) * 2010-04-26 2010-10-13 成都雷奥风电传感器有限公司 Access system for adequately utilizing wind energy and solar energy and realization method thereof
CN101969209A (en) * 2010-09-29 2011-02-09 上海晨昌动力科技有限公司 Methane household intelligent power generation method
CN102055241A (en) * 2009-10-26 2011-05-11 通用电气公司 Integrated real-time power and solar farm control system
CN102299547A (en) * 2011-09-06 2011-12-28 顾为东 Non-grid-connected wind power multi-energy cooperative power supply method and device
CN102403930A (en) * 2011-11-11 2012-04-04 江苏科技大学 Independent type photovoltaic power generation system and capacity optimization method
WO2012055236A1 (en) * 2010-10-29 2012-05-03 上海致远绿色能源有限公司 Power supply system with integration of wind power, solar energy, diesels and mains supply
CN102497001A (en) * 2011-11-14 2012-06-13 上海新奥能源科技有限公司 Electrical energy system and operation method thereof
CN102801187A (en) * 2011-05-27 2012-11-28 陈开明 Electric vehicle charging system employing joint power generation and supply of a plurality of energy sources
CN102916453A (en) * 2011-08-04 2013-02-06 上海狮虎能源科技发展有限公司 Energy management control system
CN102931722A (en) * 2012-11-28 2013-02-13 上海师范大学 Distributed power supply management method and system
CN103228533A (en) * 2011-11-24 2013-07-31 韩国海洋大学产学合作基金会 System and method for managing energy of ship
CN103683314A (en) * 2012-09-14 2014-03-26 周锡卫 Photoelectricity and wind electricity generating and supplying system with data black box calf function
EP2528192A3 (en) * 2011-05-25 2015-03-11 Erdgas Südwest GmbH Energy storage device, compound system with energy storage devices and method for operating an energy storage device
CN104734588A (en) * 2015-03-09 2015-06-24 山东大学 Biomass gas internal combustion generator set rotation speed control method
CN106253261A (en) * 2016-08-17 2016-12-21 上海电机学院 A kind of distributed mixed DC micro-grid system

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102055241A (en) * 2009-10-26 2011-05-11 通用电气公司 Integrated real-time power and solar farm control system
CN102055241B (en) * 2009-10-26 2015-09-02 通用电气公司 Integrated realtime power and solar-electricity station control system
CN101860270A (en) * 2010-04-26 2010-10-13 成都雷奥风电传感器有限公司 Access system for adequately utilizing wind energy and solar energy and realization method thereof
CN101860270B (en) * 2010-04-26 2013-01-16 成都雷奥风电传感器有限公司 Access system for adequately utilizing wind energy and solar energy and realization method thereof
CN101847878B (en) * 2010-06-07 2012-08-08 哈尔滨卓尔科技有限公司 Connected grid wind-light complementation control inverting device
CN101847878A (en) * 2010-06-07 2010-09-29 哈尔滨卓尔科技有限公司 Connected grid wind-light complementation control inverting device
CN101969209A (en) * 2010-09-29 2011-02-09 上海晨昌动力科技有限公司 Methane household intelligent power generation method
WO2012055236A1 (en) * 2010-10-29 2012-05-03 上海致远绿色能源有限公司 Power supply system with integration of wind power, solar energy, diesels and mains supply
US9130387B2 (en) 2010-10-29 2015-09-08 Shanghai Ghrepower Green Energy Company Ltd. Of P.R. China Hybrid integrated wind-solar-diesel-city power supply system
EP2528192A3 (en) * 2011-05-25 2015-03-11 Erdgas Südwest GmbH Energy storage device, compound system with energy storage devices and method for operating an energy storage device
CN102801187A (en) * 2011-05-27 2012-11-28 陈开明 Electric vehicle charging system employing joint power generation and supply of a plurality of energy sources
CN102916453A (en) * 2011-08-04 2013-02-06 上海狮虎能源科技发展有限公司 Energy management control system
CN102299547A (en) * 2011-09-06 2011-12-28 顾为东 Non-grid-connected wind power multi-energy cooperative power supply method and device
CN102403930A (en) * 2011-11-11 2012-04-04 江苏科技大学 Independent type photovoltaic power generation system and capacity optimization method
CN102403930B (en) * 2011-11-11 2014-04-16 江苏科技大学 Independent type photovoltaic power generation system and capacity optimization method
CN102497001A (en) * 2011-11-14 2012-06-13 上海新奥能源科技有限公司 Electrical energy system and operation method thereof
CN103228533B (en) * 2011-11-24 2016-03-09 韩国海洋大学产学合作基金会 Energy management system for ship and method
CN103228533A (en) * 2011-11-24 2013-07-31 韩国海洋大学产学合作基金会 System and method for managing energy of ship
CN103683314A (en) * 2012-09-14 2014-03-26 周锡卫 Photoelectricity and wind electricity generating and supplying system with data black box calf function
CN103683314B (en) * 2012-09-14 2015-08-12 周锡卫 A kind of photoelectricity, wind-powered electricity generation electricity generating and supplying system with data black box function
CN102931722A (en) * 2012-11-28 2013-02-13 上海师范大学 Distributed power supply management method and system
CN104734588A (en) * 2015-03-09 2015-06-24 山东大学 Biomass gas internal combustion generator set rotation speed control method
CN104734588B (en) * 2015-03-09 2018-01-05 山东大学 A kind of biogas internal combustion engine generator group method for controlling number of revolution
CN106253261A (en) * 2016-08-17 2016-12-21 上海电机学院 A kind of distributed mixed DC micro-grid system

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20091007

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