CN202535296U - Autonomous sharing node system-based photovoltaic microgrid system structure - Google Patents
Autonomous sharing node system-based photovoltaic microgrid system structure Download PDFInfo
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- CN202535296U CN202535296U CN2012202091143U CN201220209114U CN202535296U CN 202535296 U CN202535296 U CN 202535296U CN 2012202091143 U CN2012202091143 U CN 2012202091143U CN 201220209114 U CN201220209114 U CN 201220209114U CN 202535296 U CN202535296 U CN 202535296U
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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
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
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Abstract
The utility model belongs to the field of new energy electric power, particularly relates to an autonomous sharing node system-based photovoltaic microgrid system structure, and aims to construct a simple, feasible and high-cost performance microgrid construction system to promote the application and popularization of a new energy electric power system and a microgrid. Main and auxiliary autonomous sharing node systems have autonomous sharing capability, are tightly combined with loads, can serve as power supplies and load bodies to supply power to and receive power from each other, and are connected with each other under control for power allocation to form main power lines of the microgrid and a power grid environment. Therefore, the microgrid can be easily constructed, investment is reduced, and efficiency is improved. In addition, a grid-connected photovoltaic power generation and supply system is connected with the main power lines of the microgrid to generate and supply power, and independent user loads are connected with the main power lines of the microgrid to obtain required electric power.
Description
Technical field
The utility model belongs to the new forms of energy power domain, is specifically related to a kind of photovoltaic micro-grid system structure of sharing node system based on autonomy.
Background technology
Greatly develop the attention that new forms of energy electric power more and more obtains national governments, its strategic importance is well-known, and the photovoltaic electric power development is the important component part of new forms of energy electric power.The advantage of photovoltaic electric power is exactly that photovoltaic is ubiquitous, and is inexhaustible, clean environment firendly, but its energy density low, have a very wide distribution, the centrally connected power supply investment is big, efficient is low; The shortcoming of photovoltaic electric power is unsteadiness and intermittence, when directly being electric, can not satisfy the demand that electricity consumption is stablized in load usually.
Therefore to develop the new forms of energy photovoltaic electric power, just must solve the stability and the distributed power generation power supply of generating power supply, promptly send out the i.e. systems technology of usefulness.To this, global expert has pointed out technique direction and target to new forms of energy power generation supply power mode on the basis of research practice for many years, that is: generating combines common composition system with load; Promptly send out i.e. usefulness, reduce the electric weight and the link of accumulate and discharge; Dissolve nearby and share, reduce electric power and carry the link with conversion; Utilize power electronic technology to carry out automatic regulation, optimize power structure and mode, save electric cost; The controlled friendly type electric power of realizing prediction, balance, planned allotment that is incorporated into the power networks is shared.The characteristic of the technology path of prior art scheme is:
1. supply power after the direct inversion of photovoltaic, link is minimum, and characteristic is economized most, but has the defective of unstable power;
2. increase storage battery has increased and has discharged and recharged link, deposits afterwards earlier to supply, and has to a certain degree guaranteed the stability of output power supply, but has increased cost and power loss, has reduced efficient;
3. combine allotment each other with electrical network, can save the systematic electricity design scale, reduce charge capacity and system configuration scale, big but electrical network merges the retrofit work amount, the threshold that has electrical network and connect, application receives great restriction.
Summary of the invention
In order to solve the particularly technical barrier of photovoltaic generation electric power system networking of new forms of energy electric power; Overcome defective and problem that the prior art scheme exists; The utility model provides a kind of photovoltaic micro-grid system structure of sharing node system based on autonomy; Purpose is that structure is a kind of simple, and high performance-price ratio makes up the system of little electrical network, promotes new forms of energy electric power system and little electrical network to use and promote.
The utility model provides a kind of photovoltaic micro-grid system structure based on the shared node system of autonomy, its photovoltaic micro-grid system of sharing node system based on autonomy comprises:
Little electrical network control-management system, main autonomous node system, the secondary autonomous node system of sharing shared), child node system, photovoltaic power generation array, grid-connected photovoltaic system, accumulating system, user load, new forms of energy alternating electromotive force source, little electrical network master feeder cable, the secondary feeder cable of little electrical network and city's electrical network, electric supply meter, alternating current generating sets form; It is characterized in that:
Little electrical network control-management system is with main autonomous shared node system, node system is shared in secondary autonomy and accumulating system links to each other;
Share the host node system by autonomy and connect the autonomous chromaffin body dot system of sharing, form little electrical network master feeder cable through main feeder cable;
Connect the main autonomous node system of sharing by the secondary autonomous node system of sharing through secondary feeder cable, form the secondary feeder cable of little electrical network; Little electrical network master feeder cable is made up of little electrical network master feeder cable and the secondary feeder cable of little electrical network jointly;
The autonomous node system of sharing of alternating current generating sets auxiliary connection;
New forms of energy alternating electromotive force source connects main autonomous node system and the secondary autonomous node system of sharing shared;
Child node system, grid-connected photovoltaic system, accumulating system,, user load and new forms of energy alternating electromotive force source insert little electrical network master feeder cable and the secondary feeder cable of little electrical network respectively;
Photovoltaic power generation array inserts autonomous node system and the secondary autonomous node system of sharing of little electrical network shared of little electrical network master respectively.
2. said a kind of photovoltaic micro-grid system structure of sharing node system based on autonomy; Its main autonomous shared node system and the secondary autonomous node system of sharing are allocated controller by direct current, and control module, the power-supply controller that is incorporated into the power networks, signals collecting and processing module, many batteries, built-in dc bus, built-in ac bus, user load and photovoltaic electric power incoming end and monitoring, ac input end and monitoring, mains electricity input end and monitoring are allocated in charging-discharging controller inversion module, AC/DC module, interchange, output and monitoring, ac output end and monitoring, electric power storage incoming end and monitoring A, electric power storage incoming end and monitoring B and new forms of energy alternating electromotive force source incoming end and monitoring composition are incorporated into the power networks; It is characterized in that:
Photovoltaic array inserts the photovoltaic electric power incoming end and monitoring is connected with user load through direct current allotment controller; Batteries A inserts electric power storage incoming end and monitoring A; Batteries B inserts electric power storage incoming end and monitoring B and allocates controller through direct current and is connected with built-in dc bus.
AC power incoming transport input and monitoring also connect built-in ac bus through exchanging the allotment control module, and the new forms of energy alternating electromotive force inserts and connects built-in ac bus through exchanging the allotment control module; Civil power is in ammeter user side joint mains electricity input end and monitoring and connect built-in ac bus through exchanging the allotment control module; Alternating current is connected to many batteries through exchanging allotment control module connection AC/DC module and direct current allotment controller and charging-discharging controller; Form the alternating current charging path; Direct current connects inversion module through direct current allotment controller, and inversion module connects interchange allotment control module and connects user load and be incorporated into the power networks power-supply controller and city's electrical network.
Signals collecting and processing module and photovoltaic electric power incoming end and monitoring, ac input end and monitoring, mains electricity input end and monitoring, be incorporated into the power networks output and monitoring, ac output end and monitoring, electric power storage incoming end and monitoring A, electric power storage incoming end and monitoring B link to each other with new forms of energy alternating electromotive force source incoming end and monitoring, and are connected direct current with processing module through signals collecting and allocate controller and exchange and allocate control module; Signals collecting and processing module also are connected little electrical network control-management system of micro-grid system.
Main autonomous share node system the other side's the pay(useful) load each other that links to each other with secondary autonomous shared node system; At least guarantee to make things convenient for batteries to be in charged state all the time in the generating period; Making has on the little grid power main line of the secondary feeder cable of little electrical network master feeder cable and little electrical network all the time; Set up a power grid environment, make the photovoltaic system normal power generation and the power supply of generating electricity by way of merging two or more grid systems.
The technical scheme that the utility model proposes is set up a power grid environment through a kind of photovoltaic micro-grid system structure based on the shared node system of autonomy, makes that the networking of little electrical network is simple, reduces investment and raises the efficiency, and realize:
1. major and minor autonomy is shared node system and is had the autonomous ability of sharing; Combine closely with load; Major and minor autonomy is shared node system and can be supplied power each other and the electric power object (become power supply and load, and controlled interconnection carries out the electric power allotment, improve usage factor of system resource greatly) of dissolving.
Grid-connected photovoltaic is sent out the electric power system power supply of generating electricity that links to each other with little grid power main line, and the isolated user load links to each other with little grid power main line, obtains and satisfies required electric power.
Many batteries link to each other with node system and energy-storage system is connected on the main line through the electric power storage controller and is controlled by little electrical network control-management system, make the storage battery asynchronous parallel effectively work, and have prolonged the life of storage battery when fully sharing performance greatly.
Description of drawings
Fig. 1 is based on the autonomous composition sketch map of sharing the photovoltaic micro-grid system structure of node system.
Fig. 2 is the autonomous functional schematic block diagram of sharing node system.
Embodiment
As examples of implementation, a kind of photovoltaic micro-grid system structure based on the shared node system of autonomy is explained that still, technology of the utility model and scheme are not limited to the content that present embodiment provides in conjunction with accompanying drawing.
Fig. 1 has provided the composition sketch map of sharing the photovoltaic micro-grid system structure of node system based on autonomy.Shown in figure; A kind of photovoltaic micro-grid system structure that the utility model proposes based on the shared node system of autonomy, its photovoltaic micro-grid system of sharing node system based on autonomy comprises: little electrical network control-management system (1), main autonomous shared node system (2a), secondary autonomous node system (2b), child node system (3), photovoltaic power generation array (4), grid-connected photovoltaic system (5), accumulating system (6), user load (7), new forms of energy alternating electromotive force source (8), little electrical network master feeder cable (9a), the secondary feeder cable (9b) of little electrical network and city's electrical network (10), electric supply meter (11), alternating current generating sets (12) composition shared; It is characterized in that:
Little electrical network control-management system (1) with main autonomous share node system (2a), secondaryly autonomously share node system (2b) and accumulating system (6) links to each other, and be provided with according to program and user and little electrical network to be carried out the electric energy keyholed back plate handle and set up and the maintenance power grid environment;
Share host node system (a 205) by autonomy and connect the autonomous chromaffin body dot system (b 203) of sharing, form little electrical network master feeder cable (9a) through main feeder cable (9a);
Connect the main autonomous node system (a 208) of sharing by the secondary autonomous node system (b 205) of sharing through secondary feeder cable (9b), form the secondary feeder cable (9b) of little electrical network; Little electrical network master feeder cable is set up the power grid environment of grid-connected photovoltaic system (5) by little electrical network master feeder cable (9a) and the common formation of the secondary feeder cable of little electrical network (9b);
Alternating current generating sets (12) is as the autonomous node system (b208) of sharing of stand-by power supply auxiliary connection;
New forms of energy alternating electromotive force source (8) can directly connect main autonomous node system (a 208) and the secondary autonomous node system (b208) of sharing shared;
Child node system (3), grid-connected photovoltaic system (5), accumulating system, (6), user load (7) and new forms of energy alternating electromotive force source (8) are inserted little electrical network master feeder cable (9a) and the secondary feeder cable (9b) of little electrical network respectively;
Photovoltaic power generation array (4) inserts autonomous node system (2a) and the secondary autonomous node system (2b) of sharing of little electrical network shared of little electrical network master respectively.
Fig. 2 is the autonomous functional schematic block diagram of sharing node system.As shown in Figure 2; A kind of photovoltaic micro-grid system structure of sharing node system based on autonomy; The autonomous node system (2b) of sharing of shared node system (2a) of its main autonomy and pair is allocated controller (21) by direct current, and control module (25), the power-supply controller that is incorporated into the power networks (26), signals collecting and processing module (27), many batteries (28), built-in dc bus (29), built-in ac bus (30), user load (7) and photovoltaic electric power incoming end and monitoring (201), ac input end and monitoring (202), mains electricity input end and monitoring (203) are allocated in charging-discharging controller (22) inversion module (23), AC/DC module (24), interchange, output and monitoring (204), ac output end and monitoring (205), electric power storage incoming end and monitoring A (206), electric power storage incoming end and monitoring B (207) and new forms of energy alternating electromotive force source incoming end and monitoring (208) composition are incorporated into the power networks; It is characterized in that:
Photovoltaic array (4) access photovoltaic electric power incoming end and monitoring (201) are communicated with user load (7) through direct current allotment controller (21) or turn-off; Batteries A inserts electric power storage incoming end and monitoring A (206); Batteries B access electric power storage incoming end and monitoring B (207) also are communicated with built-in dc bus (29) through direct current allotment controller (21) or turn-off; Make unsettled photovoltaic electric power allocate controller (21) allotment by part or all of electric weight in many batteries (28) through direct current and mend electricity, surplus electricity is to partly or entirely charging in many batteries (28).
AC power incoming transport input and monitoring (202) also connect built-in ac bus (30) through exchanging allotment control module (25), and the new forms of energy alternating electromotive force inserts (208) and connects built-in ac bus (30) through interchange allotment control module (25); Civil power is in ammeter user side joint mains electricity input end and monitoring (203) and connect built-in ac bus (30) through exchange allocating control module (25); Exchanging allotment control module (25) is provided with according to program and user alternating current source electric power is carried out adjustmenting management; Alternating current is connected to many batteries (28) through exchanging allotment control module (25) connection AC/DC module (24) and direct current allotment controller (21) with charging-discharging controller (22); Form the alternating current charging path; Direct current is allocated controller (21) allotment through direct current galvanic current is inserted inversion module (23); Direct current power converts alternating current into through exchanging allotment control module (25) allotment output through inversion module (23), optimizes the power supply of user load (7) or is incorporated into the power networks through the power-supply controller that is incorporated into the power networks (26) and send.
Signals collecting and processing module (27) and photovoltaic electric power incoming end and monitoring (201), ac input end and monitoring (202), mains electricity input end and monitoring (203), be incorporated into the power networks output and monitoring (204), ac output end and monitoring (205), electric power storage incoming end and monitoring A (206), electric power storage incoming end and monitoring B (207) link to each other with new forms of energy alternating electromotive force source incoming end and monitoring (208) and gather corresponding electric signal, and the electrical signal data after signals collecting and processing module (27) processing offers direct current and allocates controller (21) and allocate control module (25) and carry out direct current and exchange allotment with exchanging; Electrical signal data also sends little electrical network control-management system (1) of micro-grid system to.
As stated; The utility model is through a kind of photovoltaic micro-grid system structure of sharing node system based on autonomy; Share node system by two autonomies and interconnect, power supply each other and the electric power object (become power supply and load, and controlled interconnection being carried out electric power and allocated) of dissolving; Constitute little grid power main line, form power grid environment.And can to share node system (a 208) controlled and connect with city's electrical network (10) single-point at the user side of electrical network electric supply meter (11) through main autonomous, make little electrical network friendly with city's electrical network (10) fusion, also can make little electrical network independent operating.
Claims (2)
1. the photovoltaic micro-grid system based on the shared node system of autonomy is constructed, and its photovoltaic micro-grid system of sharing node system based on autonomy is made up of little electrical network control-management system (1), the autonomous shared node system (2a) of master, the autonomous shared node system (2b) of pair, child node system (3), photovoltaic power generation array (4), grid-connected photovoltaic system (5), accumulating system (6), user load (7), new forms of energy alternating electromotive force source (8), little electrical network master feeder cable (9a), the secondary feeder cable (9b) of little electrical network and city's electrical network (10), electric supply meter (11), alternating current generating sets (12); It is characterized in that:
Little electrical network control-management system (1) is with main autonomous shared node system (2a), node system (2b) is shared in secondary autonomy and accumulating system (6) links to each other;
Share host node system (a 205) by autonomy and connect the autonomous chromaffin body dot system (b 203) of sharing, form little electrical network master feeder cable (9a) through main feeder cable (9a);
Connect the main autonomous node system (a 208) of sharing by the secondary autonomous node system (b 205) of sharing through secondary feeder cable (9b), form the secondary feeder cable (9b) of little electrical network; Little electrical network master feeder cable is by little electrical network master feeder cable (9a) and the common formation of the secondary feeder cable of little electrical network (9b);
The autonomous node system (b208) of sharing of alternating current generating sets (12) auxiliary connection;
New forms of energy alternating electromotive force source (8) connects main autonomous node system (a 208) and the secondary autonomous node system (b208) of sharing shared;
Child node system (3), grid-connected photovoltaic system (5), accumulating system (6), user load (7) and new forms of energy alternating electromotive force source (8) are inserted little electrical network master feeder cable (9a) and the secondary feeder cable (9b) of little electrical network respectively;
Photovoltaic power generation array (4) inserts autonomous node system (2a) and the secondary autonomous node system (2b) of sharing of little electrical network shared of little electrical network master respectively.
2. according to the said a kind of photovoltaic micro-grid system structure of sharing node system based on autonomy of claim 1; The autonomous node system (2b) of sharing of shared node system (2a) of its main autonomy and pair is allocated controller (21) by direct current, and control module (25), the power-supply controller that is incorporated into the power networks (26), signals collecting and processing module (27), many batteries (28), built-in dc bus (29), built-in ac bus (30), user load (7) and photovoltaic electric power incoming end and monitoring (201), ac input end and monitoring (202), mains electricity input end and monitoring (203) are allocated in charging-discharging controller (22) inversion module (23), AC/DC module (24), interchange, output and monitoring (204), ac output end and monitoring (205), electric power storage incoming end and monitoring A (206), electric power storage incoming end and monitoring B (207) and new forms of energy alternating electromotive force source incoming end and monitoring (208) composition are incorporated into the power networks; It is characterized in that:
Photovoltaic array (4) inserts the photovoltaic electric power incoming end and monitoring (201) is connected with user load (7) through direct current allotment controller (21); Batteries A inserts electric power storage incoming end and monitoring A (206); Batteries B inserts electric power storage incoming end and monitoring B (207) and allocates controller (21) through direct current and is connected with built-in dc bus (29).
AC power incoming transport input and monitoring (202) also connect built-in ac bus (30) through exchanging allotment control module (25), and the new forms of energy alternating electromotive force inserts (208) and connects built-in ac bus (30) through interchange allotment control module (25); Civil power is in ammeter user side joint mains electricity input end and monitoring (203) and connect built-in ac bus (30) through exchange allocating control module (25); Alternating current is connected to many batteries (28) through exchanging allotment control module (25) connection AC/DC module (24) and direct current allotment controller (21) with charging-discharging controller (22); Form the alternating current charging path; Direct current is allocated controller (21) through direct current and is connected inversion module (23), and inversion module (23) connects to exchange to be allocated control module (25) and connect user load (7) and the power-supply controller that is incorporated into the power networks (26) and city's electrical network (10).
Signals collecting and processing module (27) and photovoltaic electric power incoming end and monitoring (201), ac input end and monitoring (202), mains electricity input end and monitoring (203), be incorporated into the power networks output and monitoring (204), ac output end and monitoring (205), electric power storage incoming end and monitoring A (206), electric power storage incoming end and monitoring B (207) link to each other with new forms of energy alternating electromotive force source incoming end and monitoring (208), and are connected direct current with processing module (27) through signals collecting and allocate controller (21) and exchange and allocate control module (25); Signals collecting and processing module (27) also are connected little electrical network control-management system (1) of micro-grid system.
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| CN103391024B (en) * | 2012-05-11 | 2015-07-15 | 周锡卫 | Photovoltaic microgrid system structure based on autonomy shared node system |
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