CN102097975A - Complementary solar power generation system - Google Patents
Complementary solar power generation system Download PDFInfo
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- CN102097975A CN102097975A CN2009102140890A CN200910214089A CN102097975A CN 102097975 A CN102097975 A CN 102097975A CN 2009102140890 A CN2009102140890 A CN 2009102140890A CN 200910214089 A CN200910214089 A CN 200910214089A CN 102097975 A CN102097975 A CN 102097975A
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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
- 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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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
Abstract
The invention discloses a complementary solar power generation system applied to new energy development and utilization. The conventional solar power generation technology application only has two forms of grid-connected power generation and off-grid power generation, but the grid-connected power generation system cannot solve the problem of public power grid failure, and the off-grid power generation system has high energy storage cost. In the complementary solar power generation system, an intelligent power distribution device controls the power flowing direction on an internal alternating-current bus, a solar cell supplies power to the system, a public power grid can supply power to the system or receive redundant power of the system, and energy storage equipment can ensure the operation of a key load when the public power grid fails. In a region without the public power grid, a diesel generator can be started to supplement power for a user load. In the drawings, (1) is a public power grid or a diesel generator, (2) is an intelligent power distribution device, (3) is a solar cell, (4) is a grid-connected inverter, (5) is an internal alternating-current bus, (6) is a user load, (7) is a bidirectional inverter, and (8) is energy storage equipment.
Description
Affiliated technical field
The present invention relates to that solar power system is incorporated into the power networks and energy storage technology, belong to new energy development and utilize the field.
Background technology
Solar energy generation technology is used and is had only parallel net type solar power system and two kinds of forms of off-grid type solar power system at present.The parallel net type solar power system mainly is a kind of generation mode that depends on public electric wire net, because combining inverter all belongs to current source inverter, the parallel net type solar power system can't solve the public electric wire net power cut problem; In the off-grid type solar power system, energy storage device plays the electric energy that produces from the net electricity generation system and stores and regulating action, but cost is higher, has limited the off-grid type solar power system and has used.
Summary of the invention
In order to solve the power cut problem of parallel net type solar power system, and the energy storage problem of off-grid type solar power system, the invention provides a kind of can effectively bring into play grid-connected system with from the net electricity generation system complementary solar power system of advantage separately.Complementary solar power system utilizes solar cell to transmit electricity to public electric wire net to the energy-storage system charging or by grid-connected system, when the energy output of solar power system during greater than the power consumption of load, unnecessary electric weight can be passed in the public electric wire net, do not need jumbo energy storage device, under the situation of the of short duration power failure of public electric wire net, complementary solar power system can guarantee the critical loads operation as the ups power independent operating.In the electrical network under-developed area, diesel engine generator and complementary solar power system have been formed the lonely net of stable electric power, have guaranteed user power utilization safety.The technical solution adopted for the present invention to solve the technical problems is:
Complementary solar power system comprises solar cell, combining inverter, internal communication bus, energy storage device, two-way inverter, energy storage device, intelligent power distribution device, the back-up source of public electric wire net (the public electric wire net area is arranged) and diesel engine generator (no public electric wire net area) construction system.Described solar cell is connected to the combining inverter input, and described combining inverter output is connected to the internal communication bus; Described internal communication bus is the alternating electromotive force circuit that connects intelligent power distribution device and user load end, and the combining inverter output also is connected on the internal communication bus; Described two-way inverter connects intelligent power distribution device and energy storage device, realizes energy two-way flow between internal communication bus and energy storage device; Described energy storage device is connected to the internal communication bus by two-way inverter; Described intelligent power distribution device connects two-way inverter, public electric wire net, diesel engine generator and internal communication bus.
The intelligent power distribution device is as system core control unit, when the store energy amount of energy storage device seldom, and when the energy that the solar panel of incorporating the internal communication bus into produces can not satisfy user load, may command connects public electric wire net or starts diesel engine generator provides energy for the internal communication bus, also can regulate the load of diesel power plant by the size of current that two-way inverter control discharges and recharges energy storage device, diesel power plant is operated on the best efficiency point; When the store energy amount of energy storage device seldom, but the solar cell energy output of incorporating the internal communication bus into can deposit unnecessary energy in the energy storage device in by two-way inverter when consuming greater than user load; When energy storage device energy abundance, or when incorporating energy that the solar power system of internal communication bus produces into and consuming, can directly incorporate the energy output of solar cell into public electric wire net greater than user load; When energy storage device energy abundance, but when incorporating energy output with the solar cell of internal communication bus into user load can not be satisfied, can replenish energy gap on the internal communication bus by energy storage device by two-way inverter; When the energy output of the solar cell of incorporating the internal communication bus into can not satisfy user load, and public electric wire net disconnects or during the diesel engine generator cisco unity malfunction, can utilize the stored energy of energy storage device to guarantee the normal operation of critical loads.
Description of drawings
Accompanying drawing is complementary solar energy electricity generation system principle figure, below in conjunction with accompanying drawing native system is further illustrated:
In figure, (1) is public electric wire net (the public electric wire net area is arranged) or diesel-driven generator (no public electric wire net area), (2) be Intelligent power distribution device, (3) be solar cell, (4) be combining inverter, (5) are inner ac bus, and (6) are user's loads, (7) be two-way inverter, (8) are energy storage devices.
The solar energy electricity generation system is made up of many groups solar cell (3) and combining inverter (4). The solar energy electricity generation system can provide electric energy to user's load (6), can utilize energy storage device (8) with electrical power storage, electric energy can also be imported public electric wire net (1).
Public electric wire net (1) can receive the electric energy that is produced by the solar energy electricity generation system, can pass through the control of Intelligent power distribution device (2) and two-way inverter (7) to energy storage device (8) charging, also can provide electric energy for user's load (6) by inner ac bus (5). In the remote districts that do not have public electric wire net (1) or area, island, can start diesel-driven generator (1) and be user's load (6) electric energy supplement.
Energy storage device (8) can be stored the electric energy that solar power system produces, and also can pass through public electric wire net (1) charging, when public electric wire net has a power failure, can provide electric energy for user load (6) by internal communication bus (5).
Intelligent power distribution device (2) is controlled the flow direction of electric energy on the internal communication bus according to the energy balance relations between solar cell energy output, user load, energy storage device and public electric wire net or the diesel engine generator.
Specific embodiments
For satisfying at the user load of big portion time power consumption at 5kW, solar grid-connected inverter, the solar power system of preparing two 3kW overlap 5kW intelligent power distribution device, the storage battery of 12 12V 200Ah by the two-way inverter, of the solar cell of BIPV (BIPV) standard installation 6kWp, a 5kW.
1, sets up the solar power system of 6kWp by the BIPV standard.
2, design and produce an electric cabinet of conveniently laying storage battery, two-way inverter, two combining inverters, 5kW intelligent power distribution device, require not only can lay these equipment, must maintain easily, and will guarantee that the heat dissipation design of whole system is reasonable.
3, the storage battery of 12 12V 200Ah is formed the energy storing devices of 48V 600Ah through connection in series-parallel, in the electric cabinet of packing into.
4, the solar grid-connected inverter of two-way inverter, 5kW intelligent power distribution device and two 3kW of 5kW is installed in the electric cabinet fixes respectively.
5, connect the two-way inverter of batteries, debug the invert function of two-way inverter, monitor the quality of power supply of the alternating current of two-way inverter output, guarantee that the quality of power supply reaches the requirement that generates the internal communication bus.
6, connect two-way inverter, intelligent power distribution device and public electric wire net, debug the charging controlled function of two-way inverter.
7, connect solar cell and combining inverter, and connect combining inverter and internal communication bus.
8, being connected of disconnect user load and public electric wire net, user load is received on the internal communication bus.
Claims (6)
1. complementary solar power system, it is characterized in that: constitute by solar cell, combining inverter, internal communication bus, energy storage device, intelligent power distribution equipment, the back-up source of public electric wire net or diesel engine generator construction system, system provides electric energy by the internal communication bus to user load, solar power system and public electric wire net, diesel engine generator and energy storage device that solar cell, combining inverter are formed provide electric energy to system, public electric wire net and the unnecessary electric energy of energy storage device energy-storage system.
2. complementary solar power system according to claim 1 is characterized in that: solar panel is connected on the internal communication bus by combining inverter.
3. complementary solar power system according to claim 1 is characterized in that: the internal communication bus connects with public electric wire net by the intelligent power distribution device.
4. complementary solar power system according to claim 1 is characterized in that: energy storage device is connected the intelligent power distribution device by two-way inverter.
5. complementary solar power system according to claim 1, it is characterized in that: the intelligent power distribution device is controlled the flow direction of electric energy on the internal communication bus according to the energy balance relations between solar cell energy output, user load, energy storage device and public electric wire net or the diesel engine generator.
6. complementary solar power system according to claim 1 is characterized in that: the charging controlled function control electric energy of two-way inverter flows to energy storage device from ac bus, and the invert function control electric energy of two-way inverter flows to ac bus from energy storage device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102140890A CN102097975A (en) | 2009-12-23 | 2009-12-23 | Complementary solar power generation system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102140890A CN102097975A (en) | 2009-12-23 | 2009-12-23 | Complementary solar power generation system |
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| CN102097975A true CN102097975A (en) | 2011-06-15 |
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| CN2009102140890A Pending CN102097975A (en) | 2009-12-23 | 2009-12-23 | Complementary solar power generation system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102738865A (en) * | 2012-06-21 | 2012-10-17 | 上海市电力公司 | High-capacity off-network-type light-storing generation system |
| CN102891515A (en) * | 2012-10-23 | 2013-01-23 | 镇江大成新能源有限公司 | Intelligent double-module photovoltaic power generation system |
| CN103828171A (en) * | 2011-09-28 | 2014-05-28 | 京瓷株式会社 | Power conditioner system and storage battery power conditioner |
| CN104284494A (en) * | 2014-10-18 | 2015-01-14 | 深圳市新环能科技有限公司 | Photovoltaic LED direct-current power supply control system |
| CN106712264A (en) * | 2016-12-01 | 2017-05-24 | 国网山东省电力公司青岛供电公司 | Distributed power supply system |
| CN110768610A (en) * | 2019-11-26 | 2020-02-07 | 贵州电网物资有限公司 | Illumination power supply system based on building integrated photovoltaic |
-
2009
- 2009-12-23 CN CN2009102140890A patent/CN102097975A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103828171A (en) * | 2011-09-28 | 2014-05-28 | 京瓷株式会社 | Power conditioner system and storage battery power conditioner |
| CN102738865A (en) * | 2012-06-21 | 2012-10-17 | 上海市电力公司 | High-capacity off-network-type light-storing generation system |
| CN102891515A (en) * | 2012-10-23 | 2013-01-23 | 镇江大成新能源有限公司 | Intelligent double-module photovoltaic power generation system |
| CN104284494A (en) * | 2014-10-18 | 2015-01-14 | 深圳市新环能科技有限公司 | Photovoltaic LED direct-current power supply control system |
| CN106712264A (en) * | 2016-12-01 | 2017-05-24 | 国网山东省电力公司青岛供电公司 | Distributed power supply system |
| CN110768610A (en) * | 2019-11-26 | 2020-02-07 | 贵州电网物资有限公司 | Illumination power supply system based on building integrated photovoltaic |
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Application publication date: 20110615 |