CN104124690A - Intelligent household photovoltaic energy storage system - Google Patents
Intelligent household photovoltaic energy storage system Download PDFInfo
- Publication number
- CN104124690A CN104124690A CN201410301800.7A CN201410301800A CN104124690A CN 104124690 A CN104124690 A CN 104124690A CN 201410301800 A CN201410301800 A CN 201410301800A CN 104124690 A CN104124690 A CN 104124690A
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- Prior art keywords
- storage system
- bus
- energy
- load
- photovoltaic
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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
- Y02B10/10—Photovoltaic [PV]
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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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- 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
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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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
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/40—Arrangements for reducing harmonics
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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
Landscapes
- Supply And Distribution Of Alternating Current (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
Disclosed is an intelligent household photovoltaic energy storage system. The intelligent household photovoltaic energy storage system comprises a photovoltaic system, an energy storage system, a DC/AC (direct current/alternate current) converter, a 200-volt AC bus, an AC load, an DC/AC converter, a 48-volt DC bus, a DC load and switches. The photovoltaic system is connected to the energy storage system through a seventh switch (7), the energy storage system is connected to a DC/AC converter through a first switch (1), the DC/AC converter is connected with the 200-volt AC bus through a second switch (2), and the AC load is connected to the 200-volt AC bus through a sixth switch (6); the energy storage system is also connected with the DC/AC converter through a third switch (3), the DC/AC converter is connected to the 48-volt DC bus, and the DC load is connected to the 48-volt DC bus through a fifth switch (5). The photovoltaic system supplies power for the energy storage system, and the energy storage system can dynamically adjust the voltage of the AC bus and the DC bus, so that the intelligent household photovoltaic energy storage system can serve as an active filter to compensate system harmonics and serve as an uninterrupted power source to supply power for the AC load and the DC load when power failure occurs.
Description
Technical field
The present invention relates to a kind of intelligent family photovoltaic energy-storage system.
Background technology
Along with the development of modern science and technology, power consumer improves constantly the requirement of the quality of power supply.But confession distribution technique can not ensure there is no interruption duration at present, impact load operation can cause voltage fluctuation, a large amount of nonlinear load causes harmonic pollution to electric power system.Traditional UPS is a friendship alternating flow device always with two unsteady flow processes, and the UPS switching loss of this form is large, power factor is on the low side, and produces obvious harmonic current.The harmonic pollution problem producing for nonlinear load, conventional solution is at load-side parallel active filter.Some filters can also design for carrying out reactive power compensation, to improve power factor. but can not carry out load voltage adjusting.
Summary of the invention
The object of the invention is to overcome existing power supply-distribution system and have the shortcomings such as interruption duration, voltage fluctuation and harmonic pollution, propose a kind of intelligent family photovoltaic energy-storage system with new topological structure.
The present invention's intelligence family photovoltaic energy-storage system, is characterized in that comprising photovoltaic system, energy-storage system, DC/AC current transformer, 220V ac bus, AC load, DC/DC current transformer, 48V DC bus, DC load and switch.Described photovoltaic system is closed and is connected to energy-storage system by minion; Described energy-storage system is connected to DC/AC current transformer by the first switch, and DC/AC current transformer is connected to 220V ac bus by second switch, and AC load is connected to 220V ac bus by the 6th switch.Described energy-storage system is connected to DC/DC current transformer by the 3rd switch simultaneously, and DC/DC current transformer is connected to 48V DC bus by the 4th switch, and DC load is connected to 48V DC bus by the 5th switch.
The present invention's intelligence family is only powered by photovoltaic system with photovoltaic energy-storage system, and described energy-storage system arrives 220V ac bus and 48V DC bus by current transformer by power delivery.
In the situation that having a power failure, the present invention's intelligence family can be used as dynamic uninterrupted power supply with photovoltaic energy-storage system AC load and DC load is powered.
The present invention intelligence family can dynamic adjustments ac bus voltage with photovoltaic energy-storage system, successfully manages voltage drop, voltage rises and voltage waveform distortion.
The present invention's intelligence family can be used as active filter with photovoltaic energy-storage system system harmonics is compensated.
The present invention intelligence family can dynamic adjustments DC bus-bar voltage with photovoltaic energy-storage system, for DC load provides regulated power.
Brief description of the drawings
The topological structure of photovoltaic energy-storage system embodiment for Fig. 1 the present invention intelligence family;
Fig. 2 the present invention intelligence family uses photovoltaic energy-storage system embodiment as dynamic uninterrupted power supply fundamental diagram;
Fig. 3 the present invention intelligence family suppresses ac bus voltage fluctuation with photovoltaic energy-storage system embodiment and carries out harmonic compensation schematic diagram;
Photovoltaic energy-storage system embodiment dynamic adjustments DC bus-bar voltage schematic diagram for Fig. 4 the present invention intelligence family.
Embodiment
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
Fig. 1 is the topological structure of the present invention's intelligence family photovoltaic energy-storage system embodiment.As shown in Figure 1, this photovoltaic energy storage system comprises photovoltaic system, energy-storage system, DC/AC current transformer, 220V ac bus, AC load, DC/DC current transformer, 48V DC bus, DC load and switch.Described photovoltaic system closes 7 by minion and is connected to energy-storage system; Described energy-storage system is connected to DC/AC current transformer by the first switch 1, and DC/AC current transformer is connected to 220V ac bus by second switch 2, and AC load is connected to 220V ac bus by the 6th switch 6; Described energy-storage system is connected to DC/DC current transformer by the 3rd switch 3 simultaneously, and DC/DC current transformer is connected to 48V DC bus by the 4th switch 4, and DC load is connected to 48V DC bus by the 5th switch 5.Described energy-storage system charges by photovoltaic system, and can be by electric energy feedback to 220V ac bus and 48V DC bus.
Fig. 2 is that the present invention's intelligence family photovoltaic energy-storage system is as dynamic uninterrupted power supply fundamental diagram.As shown in Figure 2, in the situation that having a power failure, photovoltaic system charges to energy-storage system, energy-storage system can be used as dynamic uninterrupted power supply, by DC/AC current transformer and DC/DC current transformer, electric energy is outputed to 220V ac bus and 48V DC bus, to AC load and DC load power supply.
Fig. 3 is that harmonic compensation schematic diagram is carried out in the voltage fluctuation of the present invention's intelligence family photovoltaic energy-storage system inhibition ac bus.As shown in Figure 3, when when fluctuation appears in ac bus voltage, by controlling DC/AC current transformer, voltage is carried out to dynamic adjustments, can four quadrant running due to DC/AC current transformer, can compensate system harmonics.
Fig. 4 is the present invention's intelligence family photovoltaic energy-storage system dynamic adjustments DC bus-bar voltage schematic diagram, in the time that fluctuation appears in DC bus-bar voltage, by controlling DC/DC current transformer, voltage is carried out to dynamic adjustments.
Claims (6)
1. an intelligent family photovoltaic energy-storage system, is characterized in that described photovoltaic energy storage system comprises photovoltaic system, energy-storage system, DC/AC current transformer, 220V ac bus, AC load, DC/DC current transformer, 48V DC bus, DC load and switch; Described photovoltaic system closes (7) by minion and is connected to energy-storage system; Described energy-storage system is connected to DC/AC current transformer by the first switch (1), DC/AC current transformer is connected to 220V ac bus by second switch (2), and AC load is connected to 220V ac bus by the 6th switch (6); Described energy-storage system is connected to DC/DC current transformer by the 3rd switch (3) simultaneously, DC/DC current transformer is connected to 48V DC bus by the 4th switch (4), and DC load is connected to 48V DC bus by the 5th switch (5).
2. intelligent family according to claim 1 photovoltaic energy-storage system, the energy-storage system described in it is characterized in that is powered by photovoltaic system, and energy-storage system arrives 220V ac bus and 48V DC bus by current transformer by power delivery.
3. intelligent family according to claim 1 photovoltaic energy-storage system, is characterized in that in the situation that having a power failure, and described intelligent family powers to AC load and DC load as dynamic uninterrupted power supply with photovoltaic energy-storage system.
4. intelligent family according to claim 1 photovoltaic energy-storage system, is characterized in that described intelligent family photovoltaic energy-storage system can dynamic adjustments ac bus voltage.
5. intelligent family according to claim 1 photovoltaic energy-storage system, is characterized in that described intelligent family photovoltaic energy-storage system compensates system harmonics as active filter.
6. intelligent family according to claim 1 photovoltaic energy-storage system, is characterized in that described intelligent family photovoltaic energy-storage system can state regulate DC bus-bar voltage, for DC load provides regulated power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410301800.7A CN104124690A (en) | 2014-06-28 | 2014-06-28 | Intelligent household photovoltaic energy storage system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410301800.7A CN104124690A (en) | 2014-06-28 | 2014-06-28 | Intelligent household photovoltaic energy storage system |
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| CN104124690A true CN104124690A (en) | 2014-10-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410301800.7A Pending CN104124690A (en) | 2014-06-28 | 2014-06-28 | Intelligent household photovoltaic energy storage system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104333033A (en) * | 2014-11-25 | 2015-02-04 | 国网吉林省电力有限公司延边供电公司 | Power distribution system and power distribution method |
| CN108667062A (en) * | 2018-03-15 | 2018-10-16 | 许继集团有限公司 | A kind of electric system and its power quality adjusting device |
| CN111106668A (en) * | 2020-01-02 | 2020-05-05 | 科华恒盛股份有限公司 | Power supply control method and power supply control device |
| CN111342445A (en) * | 2020-04-03 | 2020-06-26 | 南京安贝旭电力科技有限公司 | Shared photovoltaic conversion system and maximum power point tracking method |
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| CN103337868A (en) * | 2013-06-26 | 2013-10-02 | 贵州电力试验研究院 | Method and device for inhibiting photovoltaic generation output power fluctuation |
| CN203466579U (en) * | 2013-09-26 | 2014-03-05 | 东方电气集团东方电机有限公司 | Grid-connected offline direct-current micro-grid system |
| CN103683466A (en) * | 2012-09-17 | 2014-03-26 | 周锡卫 | Emergent direct supply off-grid photovoltaic power supply system based on existing photovoltaic controller |
| CN204012740U (en) * | 2014-06-28 | 2014-12-10 | 广东元景能源股份有限公司 | A kind of light storage integral system |
-
2014
- 2014-06-28 CN CN201410301800.7A patent/CN104124690A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2000253510A (en) * | 1999-03-01 | 2000-09-14 | Meidensha Corp | Drive circuit for battery car |
| CN101286655A (en) * | 2008-05-22 | 2008-10-15 | 中国科学院电工研究所 | Complementary power supply system of wind and photovoltaic power generation based on super capacitor power storage |
| CN103683466A (en) * | 2012-09-17 | 2014-03-26 | 周锡卫 | Emergent direct supply off-grid photovoltaic power supply system based on existing photovoltaic controller |
| CN103337868A (en) * | 2013-06-26 | 2013-10-02 | 贵州电力试验研究院 | Method and device for inhibiting photovoltaic generation output power fluctuation |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104333033A (en) * | 2014-11-25 | 2015-02-04 | 国网吉林省电力有限公司延边供电公司 | Power distribution system and power distribution method |
| CN108667062A (en) * | 2018-03-15 | 2018-10-16 | 许继集团有限公司 | A kind of electric system and its power quality adjusting device |
| CN111106668A (en) * | 2020-01-02 | 2020-05-05 | 科华恒盛股份有限公司 | Power supply control method and power supply control device |
| CN111106668B (en) * | 2020-01-02 | 2022-01-14 | 科华恒盛股份有限公司 | Power supply control method and power supply control device |
| CN111342445A (en) * | 2020-04-03 | 2020-06-26 | 南京安贝旭电力科技有限公司 | Shared photovoltaic conversion system and maximum power point tracking method |
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Application publication date: 20141029 |