CN203491718U - Multi-voltage source multi-microgrid system framework - Google Patents
Multi-voltage source multi-microgrid system framework Download PDFInfo
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- CN203491718U CN203491718U CN201320626233.3U CN201320626233U CN203491718U CN 203491718 U CN203491718 U CN 203491718U CN 201320626233 U CN201320626233 U CN 201320626233U CN 203491718 U CN203491718 U CN 203491718U
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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
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
Abstract
The utility model belongs to the technical field of new energy electric power and particularly relates to a multi-voltage source multi-microgrid system framework. A first voltage source rotor generating set is parallelly connected to a second voltage source double-ended bidirectional inverter of a second voltage source via a B switch of an AC low-voltage control cabinet, and the second voltage source double-ended bidirectional inverter is connected to a second voltage source power line via a C transformer, so that a DC-transition parallel connection power path of a microgrid A and a microgrid B is formed. Through double AC ends of the second voltage source double-ended bidirectional inverter, the two different voltage sources are parallelly connected and are subjected to shared smooth DC transition. Similarly, a plurality of different voltage sources and corresponding microgrids can be parallelly connected together into a multi-microgrid complementary system, which effectively solves the key technical puzzle of parallel connecting a plurality of voltage sources in a microgrid and provides an effective technical scheme and measure for large-scale new energy power microgrid applications.
Description
Technical field
The utility model belongs to new forms of energy power domain, is specifically related to the many micro-grid systems in a kind of multivoltage source.
Background technology
Micro-grid system is a kind of effective means of new forms of energy electric power application, and particularly for the construction from net type (cannot access public electric wire net) system of large-scale new forms of energy electric power, micro-electrical network is system mode preferably at present.But the structure of micro-grid system needs certain technical conditions, that is: must there is the voltage source (VF pattern) that supports micro-operation of power networks, by it, for micro-electric network power line, set up voltage and frequency; There are the generator unit system and the energy-storage units system that meet need for electricity, by regulation of energy, make generating, accumulate, power supply (electricity consumption) reach balance.
The new forms of energy electric power that prior art forms is limit by technology all from the micro-electrical network of net type, require to adopt single voltage source system architecture, when building micro-electrical network as shown in Fig. 1 (a) and Fig. 1 (b).Mainly that micro-electrical network is to voltage, frequency, the consistency that the control strategies such as phase place and parameter request are very high, and the current two-way inverter apparatus as voltage source, it is power electronic equipment, every product all has certain difference in implementation and control method, therefore when building the micro-electrical network of new forms of energy prior art be adopt the same category of device of same manufacturer and connect after as single voltage source, access micro-electrical network, equipment for different manufacturers does not allow to be attempted by micro-electrical network in voltage source mode, and the limited amount system (the general maximum 6-8 of only having platforms) that can and connect as the contravariant equipment of voltage source of prior art products, so concerning extensive micro-grid system, can not meet networking demand, for voltage source, be particularly that rotor electricity generation system (as diesel engine generator, hydroelectric generator) is as complementary micro-grid system, owing to being multivoltage source and being multiple different voltage source, can not directly be attempted by micro-electrical network with new forms of energy voltage of power source, so had a strong impact on networking and the application of the micro-electrical network of new forms of energy electric power.
Summary of the invention
Make the micro-electrical network of new forms of energy electric power networking and expansion application scale effectively reliably, just must solve the technical barrier of multivoltage source networking.For convenience of explanation, rotor electricity generation system adopts diesel generating set, and new forms of energy electric power adopts photovoltaic generation unit system and provided accompanying drawing as example.For this reason, the utility model proposes the many micro-grid systems in a kind of multivoltage source, comprise: the two-way inverter of second voltage source both-end, direct current is shared energy storage device, the first voltage source rotor generator group, photovoltaic generation unit system, energy-storage units system, the first voltage source power line, second voltage source power line, first user load, the second user load, AC low-tension control cubicle, the A switch of AC low-tension control cubicle, the B switch of AC low-tension control cubicle, the A ac terminal of the two-way inverter of second voltage source both-end, the B ac terminal of the two-way inverter of second voltage source both-end, the DC terminal of the two-way inverter of both-end, A transformer, B transformer, C transformer, D transformer, E transformer, F transformer, it is characterized in that:
Both-end two-way inverter in second voltage source is shared energy storage device by the DC terminal of the two-way inverter of both-end with direct current and is connected;
First user load connects A transformer and connects the first voltage source power line, and the first voltage source rotor generator group is connect B transformer and connected the first voltage source power line by B transformer by the A switch of AC low-tension control cubicle simultaneously;
The DC terminal of both-end two-way inverter in second voltage source by the two-way inverter of both-end connects direct current and shares energy storage device, and the A ac terminal by the two-way inverter of second voltage source both-end connects C transformer, photovoltaic generation unit system and connects that D transformer, energy-storage units system connect E transformer, the second user load connects F transformer and by C transformer, D transformer, E transformer, F transformer, connects second voltage source power line respectively simultaneously;
The A ac terminal that the DC terminal of the two-way inverter of second voltage source both-end connects the shared energy storage device of direct current and the two-way inverter of second voltage source both-end connects the first voltage source rotor generator group through the B of AC low-tension control cubicle switch, and the B ac terminal of the two-way inverter of second voltage source both-end connects C transformer;
The B switch of the first voltage source diesel generating set that connects micro-electrical network A the first voltage source power line by AC low-tension control cubicle also connects the two-way inverter of second voltage source both-end in second voltage source, and by direct current, shares energy storage device and through C transformer, connect second voltage source power line by the two-way inverter of both-end.
The many micro-grid systems in described a kind of multivoltage source, it is characterized in that the two-way inverter of second voltage source both-end can many and connect expansion capacity, rotor generator group, photovoltaic generation unit system, energy-storage units system all can be many bodies subsystem and access respectively micro-electrical network simultaneously.
The many micro-grid systems in multivoltage source, the feature of described photovoltaic generation unit system is by photovoltaic power generation array and collector-shoe gear, to connect photovoltaic combining inverter to form.
The many micro-grid systems in multivoltage source, the feature of described energy-storage units system is by batteries, to connect bidirectional energy-storage inverter to form.
The many micro-grid systems in a kind of multivoltage of the utility model source are by different voltage sources, by the double cross stream of the two-way inverter of both-end, to hold and access direct current to share energy storage device, through direct current, share to seamlessly transit and make two different voltage sources and corresponding micro-electrical network and connect, by that analogy, can make a plurality of different voltage sources and corresponding micro-electrical network common and be connected into many micro-electrical network complementation systems, efficiently solve multivoltage source in micro-electrical network and the key technology difficult problem connecing, for the extensive micro-power grid application of new forms of energy electric power, effective technology scheme and approach are provided.
Accompanying drawing explanation
Fig. 1 (a) is the micro-electrical network schematic diagram of prior art diesel generation and new forms of energy electric power common networking.
Fig. 1 (b) is the micro-electrical network networking of prior art new forms of energy electric power schematic diagram.
Fig. 2 is a kind of multivoltage source many micro-grid systems framework schematic block diagram.
Embodiment
As examples of implementation, by reference to the accompanying drawings the many micro-grid systems in a kind of multivoltage source are described, still, technology of the present utility model and scheme are not limited to the content that the present embodiment provides.
Accompanying drawing 1 (a) has provided prior art diesel generation and the micro-electrical network schematic diagram of new forms of energy electric power common networking.As shown in the figure, rotor electricity generation system adopts diesel generating set as an example, and new forms of energy electric power adopts photovoltaic generation unit system, single voltage source diesel generation and new forms of energy electric power common networking micro-grid system by diesel generating set as voltage source; Not only cost of electricity-generating is high but also contaminated environment for diesel generation.
Accompanying drawing 1 (b) has provided the micro-electrical network networking of prior art new forms of energy electric power schematic diagram.As shown in the figure, rotor electricity generation system adopts diesel generating set as an example, new forms of energy electric power adopts photovoltaic generation unit system and wind-power generation unit system, by diesel generating set as voltage source and photovoltaic generation unit system and wind-power generation unit system the single voltage source new forms of energy electric power micro-grid system as the common networking of current source; Not only cost of electricity-generating is high but also contaminated environment for diesel generation.
The two-way inverter of second voltage source both-end (1) is shared energy storage device (2) by the DC terminal (1C) of the two-way inverter of both-end (1) with direct current and is connected, and forms second voltage source;
First user load (8) connects A transformer (12a) and connects the first voltage source power line (6), the first voltage source rotor generator group (3) is connect B transformer (12b) and is connected the first voltage source power line (6) by B transformer (12b) by the A switch (10a) of AC low-tension control cubicle (10) simultaneously, form first micro-electrical network subsystem, i.e. micro-electrical network A;
The two-way inverter of second voltage source both-end (1) connects the shared energy storage device (2) of direct current by the DC terminal (1C) of the two-way inverter of both-end (1), A ac terminal (1a) by the two-way inverter of second voltage source both-end (1) connects C transformer (12c) simultaneously, photovoltaic generation unit system (4) connects D transformer (12d), energy-storage units system (5) connects E transformer (12e), the second user load (9) connects F transformer (12f) also respectively by C transformer (12c), D transformer (12d), E transformer (12e), F transformer (12f) connects second voltage source power line (7), form second micro-electrical network subsystem, be micro-electrical network B,
The A ac terminal (1a) that the DC terminal (1C) of the two-way inverter of second voltage source both-end (1) connects the shared energy storage device (2) of direct current and the two-way inverter of second voltage source both-end (1) connects the first voltage source rotor generator group (3) through the B of AC low-tension control cubicle switch (10b), the B ac terminal (1b) of the two-way inverter of second voltage source both-end (1) connects C transformer (12c), forms the electrical path that the first voltage source connects second voltage source and accesses second voltage source power line (7);
The B switch (10b) of the first voltage source diesel generating set (3) that connects micro-electrical network A the first voltage source power line (6) by AC low-tension control cubicle also connects the two-way inverter of second voltage source both-end (1) in second voltage source, and by direct current, share energy storage device (2) and through C transformer (12c), connect second voltage source power line (7) by the two-way inverter of both-end (1), form micro-electrical network A and micro-electrical network B direct current transition and connect electrical path.
The many micro-grid systems in described a kind of multivoltage source, it is characterized in that the two-way inverter of second voltage source both-end (1) can many and connect expansion capacity, rotor generator group (3), photovoltaic generation unit system (4), energy-storage units system (5) all can be many bodies subsystem and access respectively micro-electrical network simultaneously.
The many micro-grid systems in multivoltage source, the feature of described photovoltaic generation unit system (4) is by photovoltaic power generation array and collector-shoe gear (4a), to connect photovoltaic combining inverter (4b) to form.
The many micro-grid systems in multivoltage source, the feature of described energy-storage units system (5) is by batteries (5a), to connect bidirectional energy-storage inverter (5b) to form.
The many micro-grid systems in a kind of multivoltage of the utility model source are through the B of AC low-tension control cubicle switch (10b) and connect the two-way inverter of second voltage source both-end (1) in second voltage source by the first voltage source rotor generator group (3), by the two-way inverter of second voltage source both-end (1), by C transformer (12c), connect second voltage source power line (7), form micro-electrical network A and micro-electrical network B direct current transition and connect electrical path.By different voltage sources, by the double cross stream of the two-way inverter of both-end (1), hold and access direct current and share energy storage device (2), through direct current, share to seamlessly transit and make two different voltage sources and corresponding micro-electrical network and connect, by that analogy, can make a plurality of different voltage sources and corresponding micro-electrical network common and be connected into many micro-electrical network complementation systems, efficiently solve multivoltage source in micro-electrical network and the key technology difficult problem connecing, for the extensive micro-power grid application of new forms of energy electric power, effective technology scheme and approach are provided.
Claims (4)
1. many micro-grid systems in multivoltage source, comprise: the two-way inverter of second voltage source both-end (1), direct current is shared energy storage device (2), the first voltage source rotor generator group (3), photovoltaic generation unit system (4), energy-storage units system (5), the first voltage source power line (6), second voltage source power line (7), first user load (8), the second user load (9), AC low-tension control cubicle (10), the A switch (10a) of AC low-tension control cubicle (10), the B switch (10ba) of AC low-tension control cubicle (10), the A ac terminal (1a) of the two-way inverter of second voltage source both-end (1), the B ac terminal (1b) of the two-way inverter of second voltage source both-end (1), the DC terminal (1C) of the two-way inverter of both-end (1), C transformer (12c), it is characterized in that:
The two-way inverter of second voltage source both-end (1) is shared energy storage device (2) by the DC terminal (1C) of the two-way inverter of both-end (1) with direct current and is connected;
First user load (8) connects A transformer (12a) and connects the first voltage source power line (6), and the first voltage source rotor generator group (3) is connect B transformer (12b) and connected the first voltage source power line (6) by B transformer (12b) by the A switch (10a) of AC low-tension control cubicle (10) simultaneously;
The two-way inverter of second voltage source both-end (1) connects the shared energy storage device (2) of direct current by the DC terminal (1C) of the two-way inverter of both-end (1), A ac terminal (1a) by the two-way inverter of second voltage source both-end (1) connects C transformer (12c) simultaneously, photovoltaic generation unit system (4) connects D transformer (12d), energy-storage units system (5) connects E transformer (12e), the second user load (9) connects F transformer (12f) also respectively by C transformer (12c), D transformer (12d), E transformer (12e), F transformer (12f) connects second voltage source power line (7),
The A ac terminal (1a) that the DC terminal (1C) of the two-way inverter of second voltage source both-end (1) connects the shared energy storage device (2) of direct current and the two-way inverter of second voltage source both-end (1) connects the first voltage source rotor generator group (3) through the B of AC low-tension control cubicle switch (10b), and the B ac terminal (1b) of the two-way inverter of second voltage source both-end (1) connects C transformer (12c);
The B switch (10b) of the first voltage source diesel generating set (3) that connects micro-electrical network A the first voltage source power line (6) by AC low-tension control cubicle also connects the two-way inverter of second voltage source both-end (1) in second voltage source, and by direct current, shares energy storage device (2) and through C transformer (12c), connect second voltage source power line (7) by the two-way inverter of both-end (1).
2. many micro-grid systems in a kind of multivoltage source according to claim 1, it is characterized in that the two-way inverter of second voltage source both-end (1) can many and connect, rotor generator group (3), photovoltaic generation unit system (4), energy-storage units system (5) all can be a plurality of subsystems and access respectively micro-electrical network simultaneously.
3. many micro-grid systems in a kind of multivoltage source according to claim 1, the feature of described photovoltaic generation unit system (4) is by photovoltaic power generation array and collector-shoe gear (4a), to connect photovoltaic combining inverter (4b) to form.
4. many micro-grid systems in a kind of multivoltage source according to claim 1, the feature of described energy-storage units system (5) is by batteries (5a), to connect bidirectional energy-storage inverter (5b) to form.
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| CN201320626233.3U CN203491718U (en) | 2013-10-12 | 2013-10-12 | Multi-voltage source multi-microgrid system framework |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104578133B (en) * | 2013-10-12 | 2017-05-10 | 周锡卫 | Multi-voltage source multi-microgrid system framework |
| CN107017661A (en) * | 2017-04-25 | 2017-08-04 | 西安石油大学 | The polymorphic operation method for handover control of microgrid that a kind of mode is relied on |
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2013
- 2013-10-12 CN CN201320626233.3U patent/CN203491718U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104578133B (en) * | 2013-10-12 | 2017-05-10 | 周锡卫 | Multi-voltage source multi-microgrid system framework |
| CN107017661A (en) * | 2017-04-25 | 2017-08-04 | 西安石油大学 | The polymorphic operation method for handover control of microgrid that a kind of mode is relied on |
| CN107017661B (en) * | 2017-04-25 | 2020-07-07 | 西安石油大学 | Mode-dependent microgrid multi-state operation switching control method |
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Effective date of registration: 20170122 Address after: 100000 Beichen East Road, Chaoyang District, No. 8, building No. 1, building No. 1601, No. 1603, No. Patentee after: Beijing potential new energy technology Co., Ltd. Address before: 100102 Chaoyang District, South Lake Road, No. 8, North building, room 2, room, No. 301 Patentee before: Zhou Xiwei |
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Granted publication date: 20140319 Effective date of abandoning: 20170510 |
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Granted publication date: 20140319 Effective date of abandoning: 20170510 |
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