CN104578133B - Multi-voltage source multi-microgrid system framework - Google Patents
Multi-voltage source multi-microgrid system framework Download PDFInfo
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- CN104578133B CN104578133B CN201310472322.1A CN201310472322A CN104578133B CN 104578133 B CN104578133 B CN 104578133B CN 201310472322 A CN201310472322 A CN 201310472322A CN 104578133 B CN104578133 B CN 104578133B
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- voltage source
- transformers
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- capacitance sensor
- way inverter
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/381—Dispersed generators
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/04—Circuit arrangements for ac mains or ac distribution networks for connecting networks of the same frequency but supplied from different sources
- H02J3/06—Controlling transfer of power between connected networks; Controlling sharing of load between connected networks
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
Abstract
The invention belongs to the technical field of new energy electricity, and particularly relates to a multi-voltage source multi-microgrid system framework. According to the system framework, a first voltage source rotor generator set is in parallel connection with a second voltage source double-ended bidirectional inversion device of a second voltage source through a switch B of an AC low-voltage control cabinet; the second voltage source double-ended bidirectional inversion device is connected with a second voltage source power line through a transformer C to form a DC transitional parallel power path of a microgrid A and a microgrid B; the two different voltage sources are in parallel connection with each other through the double AC ends of the second voltage source double-ended bidirectional inversion device; the transition is shared through DC smoothness; the rest can be done in the same manner, so that multiple different voltage sources and corresponding microgrids can be in parallel connection with one another to form a multi-microgrid complementary system. According to the system framework, the key technical problem that multi-voltage sources are in parallel connection with one another in microgrids is effectively solved, and the effective technical scheme and path are provided for the application of large-scale new energy electricity microgrids.
Description
Technical field
The invention belongs to field of new energy power, and in particular to a kind of many micro-grid system frameworks in multivoltage source.
Background technology
Micro-grid system is a kind of effective means of new forms of energy electric power application, especially for large-scale new forms of energy electric power from
The construction of net type (cannot access public electric wire net) system, micro-capacitance sensor is presently preferred system mode.But micro-grid system
Structure need certain technical conditions, i.e.,：There must be the voltage source (VF patterns) for supporting micro-capacitance sensor operation, be micro- electricity by it
Net power line sets up voltage and frequency；There is the generator unit system and energy-storage units system for meeting need for electricity, adjusted by energy
Control, makes generating, storing up electricity, power supply (electricity consumption) reach balance.
The new forms of energy electric power off-network type micro-capacitance sensor that prior art is constituted is limited by technology, requires to adopt when micro-capacitance sensor is built
With single voltage source system architecture, shown in such as Fig. 1 (a) and Fig. 1 (b).Mainly micro-capacitance sensor is controlled voltage, frequency, phase place etc.
Strategy and the very high uniformity of parameter request, and be power electronic equipment currently as the two-way inverter apparatus of voltage source, often
Family's product has certain difference in implementation and control method, therefore prior art is to adopt when new forms of energy micro-capacitance sensor is built
Access micro-capacitance sensor as single voltage source with the same category of device of same manufacturer and after connecing, for the equipment of different manufacturers do not allow with
Voltage source mode is attempted by micro-capacitance sensor, and prior art products have as the quantity that the contravariant equipment of voltage source can and connect
(general at most there was only 6-8 platforms) is limited, so for extensive micro-grid system, it is impossible to meet networking requirements；It is particularly right
For voltage source is rotor electricity generation system (such as diesel-driven generator, hydroelectric generator) as complementary micro-grid system, due to
It is multivoltage source and is various different voltage sources, it is impossible to is directly attempted by micro-capacitance sensor with new forms of energy voltage of power source, institute
To have had a strong impact on the networking and application of new forms of energy electric power micro-capacitance sensor.
The content of the invention
New forms of energy electric power micro-capacitance sensor effectively and reliably networking and expansion application scale are enable, multivoltage must be just solved
The technical barrier of source networking.For convenience of description, rotor electricity generation system adopts diesel generating set, new forms of energy electric power to adopt photovoltaic
Generator unit system simultaneously gives accompanying drawing as example.For this purpose, the present invention proposes a kind of many micro-grid system frameworks in multivoltage source,
Including：The two-way inverter of the second voltage source both-end, direct current share energy storage device, first voltage source rotor generator group, photovoltaic
Generator unit system, energy-storage units system, first voltage source power line, the second voltage source power line, first user load, second
User load, AC low-tension switch board, the A switches of AC low-tension switch board, the B switches of AC low-tension switch board, second voltage
The A ac terminals of the two-way inverter of source both-end, B ac terminals, the second voltage of the two-way inverter of the second voltage source both-end
The DC terminal of the two-way inverter of source both-end, A transformers, B transformers, C transformers, D transformers, E transformers, F transformers,
It is characterized in that：
The two-way inverter of the second voltage source both-end by the DC terminal of the two-way inverter of the second voltage source both-end with
The shared energy storage device connection of direct current, constitutes the second voltage source；
First user load connects A transformers and connection first voltage source power line, while first voltage source rotor generator
Group connects B transformers and connects first voltage source power line by B transformers by the A switches of AC low-tension switch board, constitutes first
Micro-capacitance sensor subsystem, i.e. micro-capacitance sensor A；
The two-way inverter of the second voltage source both-end is connected by the DC terminal of the two-way inverter of the second voltage source both-end
The shared energy storage device of direct current is connect, while connecing C transformers, light by the B ac terminals of the two-way inverter of the second voltage source both-end
Volt generator unit system connect D transformers, energy-storage units system connect E transformers, second user load connect F transformers and respectively by C
Transformer, D transformers, E transformers, F transformers connection the second voltage source power line, constitute the second micro-capacitance sensor subsystem, i.e., micro-
Electrical network B；
The shared energy storage device of DC terminal connection direct current of the two-way inverter of the second voltage source both-end and the second voltage source
The B switch connection first voltage source rotor generator groups of the A ac terminal Jing AC low-tension switch boards of the two-way inverter of both-end,
The B ac terminals connection C transformers of the two-way inverter of the second voltage source both-end, constitute first voltage source connection the second voltage source
And access the electrical path of the second voltage source power line；
The first voltage source rotor generator group of connection micro-capacitance sensor A first voltage source power lines passes through AC low-tension switch board
B switch and connect the two-way inverter of the second voltage source both-end of the second voltage source, and by the shared energy storage device of direct current by the
The two-way inverter Jing C transformers of two voltage source both-ends connect the second voltage source power line, constitute micro-capacitance sensor A straight with micro-capacitance sensor B
Flow through and cross and connect electrical path.
A kind of many micro-grid system frameworks in multivoltage source, is characterized in that the two-way inverter of the second voltage source both-end is more
Platform is simultaneously connect so as to expand capacity, while first voltage source rotor generator group, photovoltaic generation unit system, energy-storage units system are equal
Micro-capacitance sensor is respectively connected to for many body subsystems.
A kind of many micro-grid system frameworks in multivoltage source, are characterised by that the photovoltaic generation unit system is by photovoltaic generation
Array and collector-shoe gear connection photovoltaic combining inverter are constituted.
A kind of many micro-grid system frameworks in multivoltage source, the energy-storage units system is characterized in that double by batteries connection
Constitute to energy storage inverter.
A kind of many micro-grid system frameworks in multivoltage source of the present invention are to pass through the second voltage source both-end by different voltage sources
The shared energy storage device of direct current is simultaneously accessed in the double cross stream end of two-way inverter, and shared the seamlessly transitting of Jing direct currents makes two different voltages
Source and corresponding micro-capacitance sensor simultaneously connect, and by that analogy, multiple different voltage sources and corresponding micro-capacitance sensor can be made common and be connected into many
Micro-capacitance sensor complementary system, the key technology difficulty for efficiently solving multivoltage source in micro-capacitance sensor and connecing is extensive new forms of energy
Electric power micro-capacitance sensor application, there is provided effective technology scheme and approach.
Description of the drawings
Fig. 1 (a) is prior art diesel generation and new forms of energy electric power common networking micro-capacitance sensor schematic diagram.
Fig. 1 (b) is prior art new forms of energy electric power micro-grid schematic diagram.
Fig. 2 is a kind of many micro-grid system framework schematic block diagrams in multivoltage source.
Specific embodiment
As examples of implementation, a kind of many micro-grid system frameworks in multivoltage source are described with reference to accompanying drawing, but, this
Bright technology is not limited to the content that the present embodiment is provided with scheme.
Accompanying drawing 1 (a) gives prior art diesel generation and new forms of energy electric power common networking micro-capacitance sensor schematic diagram.As schemed
Show, as an example rotor electricity generation system adopts diesel generating set, and new forms of energy electric power adopts photovoltaic generation unit system, by diesel oil
Single voltage source diesel generation and new forms of energy electric power common networking micro-grid system of the generating set as voltage source；Diesel generation
Not only cost of electricity-generating is high but also pollution environment.
Accompanying drawing 1 (b) gives prior art new forms of energy electric power micro-grid schematic diagram.As illustrated, turning as an example
Sub- electricity generation system adopts diesel generating set, new forms of energy electric power to adopt 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 as the common of current source
The single voltage source new forms of energy electric power micro-grid system of networking；Not only cost of electricity-generating is high but also pollution environment for diesel generation.
Accompanying drawing 2 gives a kind of multivoltage source many micro-grid system framework schematic block diagrams.As illustrated, the present invention proposes one
The many micro-grid system frameworks in multivoltage source are planted, including：The shared energy storage dress of the two-way inverter of the second voltage source both-end (1), direct current
Put (2), first voltage source rotor generator group (3), photovoltaic generation unit system (4), energy-storage units system (5), first voltage
Source power line (6), the second voltage source power line (7), first user load (8), second user load (9), AC low-tension control
It is cabinet (10), A switches (10a) of AC low-tension switch board (10), B switches (10ba) of AC low-tension switch board (10), second electric
The A ac terminals (1a) of the two-way inverter of potential source both-end (1), the B exchanges end of the two-way inverter of the second voltage source both-end (1)
Sub (1b), the DC terminal (1C) of the two-way inverter of the second voltage source both-end (1), A transformers (12a), B transformers (12b),
C transformers (12c), D transformers (12d), E transformers (12e), F transformers (12f), is characterized in that：
The direct current that the two-way inverter of the second voltage source both-end (1) passes through the two-way inverter of the second voltage source both-end (1)
Terminal (1C) is connected with the shared energy storage device (2) of direct current, constitutes the second voltage source；
First user load (8) connects A transformers (12a) and connection first voltage source power line (6), while first voltage source
Rotor generator group (3) connects B transformers (12b) and by B transformers by A switches (10a) of AC low-tension switch board (10)
(12b) connect first voltage source power line (6), constitute the first micro-capacitance sensor subsystem, i.e. micro-capacitance sensor A；
The direct current that the two-way inverter of the second voltage source both-end (1) passes through the two-way inverter of the second voltage source both-end (1)
The shared energy storage device (2) of terminal (1C) connection direct current, while being exchanged by the B of the two-way inverter of the second voltage source both-end (1)
Terminal (1b) connect C transformers (12c), photovoltaic generation unit system (4) connect D transformers (12d), energy-storage units system (5) connect E change
Depressor (12e), second user load (9) connect F transformers (12f) and respectively by C transformers (12c), D transformers (12d), E changes
Depressor (12e), F transformers (12f) connection the second voltage source power line (7), constitute the second micro-capacitance sensor subsystem, i.e. micro-capacitance sensor B；
The shared energy storage device (2) of DC terminal (1C) connection direct current of the two-way inverter of the second voltage source both-end (1) and
B switches (10b) connections of A ac terminals (1a) the Jing AC low-tension switch boards of the two-way inverter of the second voltage source both-end (1)
First voltage source rotor generator group (3), B ac terminals (1b) the connection C of the two-way inverter of the second voltage source both-end (1) becomes
Depressor (12c), constitutes first voltage source connection the second voltage source and accesses the electrical path of the second voltage source power line (7)；
First voltage source rotor generator group (3) of connection micro-capacitance sensor A first voltage source power lines (6) is by AC low-tension
B switches (10b) of switch board simultaneously connects the two-way inverter of the second voltage source both-end (1) of the second voltage source, and be total to by direct current
Enjoy energy storage device (2) and the second voltage source electric power is connected by the second voltage source both-end two-way inverter (1) Jing C transformers (12c)
Line (7), constitutes micro-capacitance sensor A with micro-capacitance sensor B direct currents transition and connects electrical path.
A kind of many micro-grid system frameworks in multivoltage source, is characterized in that the two-way inverter of the second voltage source both-end
(1) multiple stage and connect so as to expand capacity, while first voltage source rotor generator group (3), photovoltaic generation unit system (4), storage
Energy cellular system (5) is many body subsystems and is respectively connected to micro-capacitance sensor.
A kind of many micro-grid system frameworks in multivoltage source, are characterised by that the photovoltaic generation unit system (4) is by photovoltaic
Power generation array and collector-shoe gear (4a) connection photovoltaic combining inverter (4b) are constituted.
A kind of many micro-grid system frameworks in multivoltage source, the energy-storage units system (5) is characterized in that by batteries
(5a) connect bidirectional energy-storage inverter (5b) to constitute.
A kind of many micro-grid system frameworks in multivoltage source of the present invention are handed over by first voltage source rotor generator group (3) Jing
B switches (10b) of stream low-voltage power distributing cabinet simultaneously connects the two-way inverter of the second voltage source both-end (1), double by the second voltage source both-end
The second voltage source power line (7) is connected by C transformers (12c) to inverter (1), micro-capacitance sensor A and micro-capacitance sensor B direct currents is constituted
Transition simultaneously connects electrical path.By different voltage sources by the double cross stream end of the two-way inverter of the second voltage source both-end (1) simultaneously
The shared energy storage device (2) of direct current is accessed, shared the seamlessly transitting of Jing direct currents makes two different voltage sources and corresponding micro-capacitance sensor and connect,
By that analogy, can make multiple different voltage sources and corresponding micro-capacitance sensor jointly and be connected into many micro-capacitance sensor complementary systems, effectively solution
Key technology difficulty multivoltage source determined in micro-capacitance sensor and has connect, is extensive new forms of energy electric power micro-capacitance sensor application, there is provided
Effective technology scheme and approach.
Claims (4)
1. many micro-grid system frameworks in a kind of multivoltage source, including：The two-way inverter of the second voltage source both-end (1), direct current are common
Enjoy energy storage device (2), first voltage source rotor generator group (3), photovoltaic generation unit system (4), energy-storage units system (5),
First voltage source power line (6), the second voltage source power line (7), first user load (8), second user load (9), exchange
Low-voltage power distributing cabinet (10), A switches (10a) of AC low-tension switch board (10), the B switches of AC low-tension switch board (10)
(10ba), the two-way inversion dress of the A ac terminals (1a) of the two-way inverter of the second voltage source both-end (1), the second voltage source both-end
Put B ac terminals (1b), the DC terminal (1C) of the two-way inverter of the second voltage source both-end (1), the A transformers of (1)
(12a), B transformers (12b), C transformers (12c), D transformers (12d), E transformers (12e), F transformers (12f), its feature
It is：
The DC terminal that the two-way inverter of the second voltage source both-end (1) passes through the two-way inverter of the second voltage source both-end (1)
(1C) it is connected with the shared energy storage device (2) of direct current, constitutes the second voltage source；
First user load (8) connects A transformers (12a) and connection first voltage source power line (6), while first voltage source rotor
Generating set (3) connects B transformers (12b) and is connected by B transformers (12b) by A switches (10a) of AC low-tension switch board (10)
First voltage source power line (6) is connect, the first micro-capacitance sensor subsystem, i.e. micro-capacitance sensor A is constituted；
The DC terminal that the two-way inverter of the second voltage source both-end (1) passes through the two-way inverter of the second voltage source both-end (1)
(1C) the shared energy storage device (2) of direct current is connected, while the B ac terminals for passing through the two-way inverter of the second voltage source both-end (1)
(1b) C transformers (12c), photovoltaic generation unit system (4) are connect connect D transformers (12d), energy-storage units system (5) and connect E transformers
(12e), second user load (9) connects F transformers (12f) and respectively by C transformers (12c), D transformers (12d), E transformers
(12e), F transformers (12f) connection the second voltage source power line (7), constitute the second micro-capacitance sensor subsystem, i.e. micro-capacitance sensor B；
The shared energy storage device (2) and second of DC terminal (1C) connection direct current of the two-way inverter of the second voltage source both-end (1)
B switches (10b) connections first of A ac terminals (1a) the Jing AC low-tension switch boards of the two-way inverter of voltage source both-end (1)
Voltage source rotor generator group (3), B ac terminals (1b) the connection C transformers of the two-way inverter of the second voltage source both-end (1)
(12c), constitute first voltage source connection the second voltage source and access the electrical path of the second voltage source power line (7)；
First voltage source rotor generator group (3) of connection micro-capacitance sensor A first voltage source power lines (6) is by AC low-tension control
B switches (10b) of cabinet simultaneously connects the two-way inverter of the second voltage source both-end (1) of the second voltage source, and store up by the way that direct current is shared
Energy device (2) connects the second voltage source power line by the second voltage source both-end two-way inverter (1) Jing C transformers (12c)
(7), micro-capacitance sensor A is constituted with micro-capacitance sensor B direct currents transition and connect electrical path.
2. many micro-grid system frameworks in a kind of multivoltage source according to claim 1, is characterized in that the second voltage source both-end is double
To inverter (1) multiple stage and connect so as to expand capacity, while first voltage source rotor generator group (3), photovoltaic generation unit
System (4), energy-storage units system (5) are multiple subsystems and are respectively connected to micro-capacitance sensor.
3. many micro-grid system frameworks in a kind of multivoltage source according to claim 1, are characterised by the photovoltaic generation unit
System (4) is made up of photovoltaic power generation array and collector-shoe gear (4a) connection photovoltaic combining inverter (4b).
4. many micro-grid system frameworks in a kind of multivoltage source according to claim 1, the feature of the energy-storage units system (5)
It is to be made up of batteries (5a) connection bidirectional energy-storage inverter (5b).
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| CN203491718U (en) * | 2013-10-12 | 2014-03-19 | 周锡卫 | Multi-voltage source multi-microgrid system framework |
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| CN101931238A (en) * | 2010-04-29 | 2010-12-29 | 浙江省电力试验研究院 | Master-slave strategy-based microgrid system coordination control method |
| CN203491718U (en) * | 2013-10-12 | 2014-03-19 | 周锡卫 | Multi-voltage source multi-microgrid system framework |
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