CN206195362U - Photovoltaic microgrid grid -connected electricity generation system - Google Patents
Photovoltaic microgrid grid -connected electricity generation system Download PDFInfo
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- CN206195362U CN206195362U CN201621199865.6U CN201621199865U CN206195362U CN 206195362 U CN206195362 U CN 206195362U CN 201621199865 U CN201621199865 U CN 201621199865U CN 206195362 U CN206195362 U CN 206195362U
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- electricity generation
- microgrid
- generation system
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
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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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- Supply And Distribution Of Alternating Current (AREA)
- Photovoltaic Devices (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model relates to a solar facilities technical field, concretely relates to photovoltaic microgrid grid -connected electricity generation system. This solar street lamp includes photovoltaic array, collection flow box, grid -connected inverter and microgrid block terminal, and the microgrid block terminal is connected with user's load and commercial power electric wire netting respectively to be equipped with the transformer between net dc -to -ac converter and the microgrid block terminal, the microgrid block terminal has connected gradually energy storage transformer, energy storage two way convertor and storage battery, still include battery management device and monitoring device, the battery management device is connected with battery and monitoring device respectively, and monitoring device is connected with microgrid block terminal, grid -connected inverter and energy storage two way convertor respectively. The utility model provides a problem of with high costs, the inefficiency of miniwatt solar photovoltaic electricity generation in the present. It handles and stores to produce the electric energy through grid -connected inverter and energy storage two way convertor with photovoltaic array to the automatic commercial power electric wire netting that opens when the energy shortage provides reliable and stable electric power for end user.
Description
Technical field
The utility model patent is related to solar facilities technical field, and in particular to a kind of photovoltaic micro-grid connection generates electricity and is
System.
Background technology
Recently as the development of photovoltaic industry, the reduction of photovoltaic system cost, technology application reach its maturity, photovoltaic
Generating is the important way that solar energy development is utilized, and current solar power generation mainly includes that off-network type electricity generation system and grid type are sent out
Electric system.Off-network type electricity generation system solves the power supply of remote districts or supply of electric power under-developed area, but off-network type system mistake
Battery is relied on more, and system effectiveness is low, and cost of investment is high.Grid-connected photovoltaic system efficiency high, cost of investment is low, by electricity
Price differential valency obtains photovoltaic parallel in system economic benefit.However, current grid-connected photovoltaic system is 5MW and above photovoltaic simultaneously
Net electricity generation system, the grid-connected photovoltaic system high cost of middle low power grade, efficiency are low, be unfavorable for popularization.
Utility model content
The utility model is in view of the shortcomings of the prior art, there is provided a kind of photovoltaic micro-grid connection electricity generation system of dependable performance,
Solve the problems, such as that high cost, the efficiency of current middle low power solar energy power generating are low.
What the technical solution of the utility model was realized in：The photovoltaic micro-grid connection electricity generation system includes what is be sequentially connected
Photovoltaic array, header box, combining inverter and microgrid distribution box, the microgrid distribution box respectively with user load and utility grid
Connection, it is characterised in that transformer is provided between the combining inverter and microgrid distribution box, the microgrid distribution box connects successively
It is connected to energy-storage transformer, energy storage two way convertor and batteries；The photovoltaic micro-grid connection electricity generation system also includes cell tube
Reason device and supervising device, the cell managing device are connected with battery and supervising device respectively, the supervising device difference
It is connected with microgrid distribution box, combining inverter and energy storage two way convertor.
The supervising device is connected by wireless network with microgrid distribution box, combining inverter and energy storage two way convertor.
The energy storage two way convertor includes DC/AC two way convertors and control unit, and described control unit passes through ether
Network interface is communicated with cell managing device, obtains batteries status information, realizes the protectiveness discharge and recharge to battery.
The photovoltaic array is formed by some rack-mount solar panels by cable series connection.
If the batteries are in series by dry battery, each battery is equipped with housing and closure, described
Sealing waterproof rubber ring is provided between housing and closure.
The header box is lightning-proof header box, and fuse, breaker and lightning protection device are provided with the lightning-proof header box.
The utility model solves defect present in background technology, has the advantages that：
The utility model solves the problems, such as that the high cost of current middle low power solar energy power generating, efficiency are low.Pass through
Photovoltaic array generation electric energy is processed and stored by combining inverter and energy storage two way convertor, and automatic when energy is not enough
Start utility grid, for terminal user provides reliable and stable electric power, it is to avoid power network is unstable, cost of electricity-generating is high, efficiency is low
Problem.There is charging and discharging function by energy storage two way convertor, power network and energy content of battery bi-directional conversion and control is realized,
Reactive-load compensation is carried out to power network, energy inside regulation and control, efficiency high, it is not necessary to additional piconet controller reduces cost.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
In figure：1- photovoltaic arrays, 2- header boxs, 3- combining inverters, 4- transformers, 5- microgrid distribution boxs, 6- user bears
Carry, 7- utility grids, 8- energy storage two way convertors, 9- batteries, 10- cell managing devices, 11- supervising devices, 12- energy storage
Transformer.
Specific embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment for being obtained, belongs to the scope of the utility model protection.
Photovoltaic micro-grid connection electricity generation system as shown in Figure 1, including the photovoltaic array 1, header box 2, grid-connected being sequentially connected
Inverter 3 and microgrid distribution box 5, microgrid distribution box 5 are connected with user load 6 and utility grid 7 respectively.The He of combining inverter 3
Transformer 4 is provided between microgrid distribution box 5, microgrid distribution box 5 is connected with energy-storage transformer 12, energy storage two way convertor 8 in turn
With batteries 9；Photovoltaic micro-grid connection electricity generation system also includes cell managing device 10 and supervising device 11, cell managing device
(BMS) 10 be connected with batteries 9 and supervising device 11 respectively, supervising device 11 respectively with microgrid distribution box 5, combining inverter
3 and energy storage two way convertor 8 connect.Supervising device 11 is by wireless network and microgrid distribution box 5, combining inverter 3 and energy storage
Two way convertor 8 is connected.Energy storage two way convertor 8 includes DC/AC two way convertors and control unit, and control unit passes through ether
Network interface is communicated with cell managing device (BMS) 10, obtains the status information of batteries 9, realizes the protection to battery
Property discharge and recharge.Photovoltaic array 1 is formed by some rack-mount solar panels by cable series connection.Batteries 9
If being in series by dry battery, each battery is equipped with housing and closure, sealing is provided between housing and closure anti-
Glue circle.Header box 2 is lightning-proof header box, and inside is provided with fuse, breaker and lightning protection device.
The utility model implementation process is：Photovoltaic micro-grid connection electricity generation system is mainly double using combining inverter 3 and energy storage
Electric energy is produced to be processed and stored photovoltaic array 1 to current transformer 8, and the automatic utility grid 7 when energy is not enough, it is
Terminal user provides reliable and stable electric power.Particularly, the direct current that photovoltaic array 1 is produced is collected to grid-connected through header box 2
Inverter 3, is changed into High Level AC Voltage and is conveyed, and then by transformer 4, is being changed into 220V voltages into microgrid distribution box
5 are powered to user load 6.When electric energy power network is normal, system first has to ensure that batteries 9 possess certain electricity, with
Emergency use during standby grid power blackout.Within the peak power scope of photovoltaic array 1 is allowed afterwards, energy needed for being responsible for is provided as far as possible,
But no more than load power demand, batteries 9 are stored to by energy-storage transformer 12 and energy storage two way convertor 8 more than part
In.In 1 underpower of photovoltaic array, the energy that batteries 9 are stored is supplied to user load 6.When system is shut down for some reason
When, directly powered to user load 6 by microgrid distribution box 5 from utility grid 7；Microgrid electric power system is normal, and utility grid 7 is stopped
Electricity, is directly powered from transformer 4 to user load 6.Energy storage two way convertor 8 has charging and discharging function, realizes electricity
Net and energy content of battery bi-directional conversion and control, reactive-load compensation, the regulation and control of energy inside, efficiency high, it is not necessary to additional are carried out to power network
Piconet controller.Generation Control additionally can be automatically filled, makes the life of storage battery long, can be unattended.Supervising device 11 can
Monitor in real time surrounding environment and equipment operational factor, and remote monitoring can be realized by wireless network, monitoring accuracy rate is high, speed
Hurry up.
Preferred embodiment of the present utility model is the foregoing is only, is not used to limit the utility model, it is all at this
Within the spirit and principle of utility model, any modification, equivalent substitution and improvements made etc. should be included in the utility model
Protection domain within.
Claims (6)
1. a kind of photovoltaic micro-grid connection electricity generation system, including photovoltaic array (1), header box (2), the combining inverter being sequentially connected
(3) and microgrid distribution box (5), the microgrid distribution box (5) is connected with user load (6) and utility grid (7) respectively, its feature
It is that transformer (4) is provided between the combining inverter (3) and microgrid distribution box (5), the microgrid distribution box (5) is successively
It is connected with energy-storage transformer (12), energy storage two way convertor (8) and batteries (9)；The photovoltaic micro-grid connection electricity generation system
Also include cell managing device (10) and supervising device (11), the cell managing device (10) respectively with batteries (9) and
Supervising device (11) is connected, and the supervising device (11) is two-way with microgrid distribution box (5), combining inverter (3) and energy storage respectively
Current transformer (8) is connected.
2. photovoltaic micro-grid connection electricity generation system according to claim 1, it is characterised in that：The supervising device (11) passes through
Wireless network is connected with microgrid distribution box (5), combining inverter (3) and energy storage two way convertor (8).
3. photovoltaic micro-grid connection electricity generation system according to claim 1 and 2, it is characterised in that：The energy storage Bidirectional variable-flow
Device (8) includes DC/AC two way convertors and control unit, and described control unit passes through Ethernet interface and cell managing device
(10) communicated, obtained the status information of batteries (9), realized the protectiveness discharge and recharge to battery.
4. photovoltaic micro-grid connection electricity generation system according to claim 3, it is characterised in that：The photovoltaic array (1) if by
Rack-mount solar panel is done to be formed by cable series connection.
5. photovoltaic micro-grid connection electricity generation system according to claim 4, it is characterised in that：The batteries (9) if by
Dry battery is in series, and each battery is equipped with housing and closure, and sealing is provided between described housing and closure
Waterproof apron.
6. photovoltaic micro-grid connection electricity generation system according to claim 5, it is characterised in that：The header box (2) is lightning protection
Header box, is provided with fuse, breaker and lightning protection device in the lightning-proof header box.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201621199865.6U CN206195362U (en) | 2016-11-07 | 2016-11-07 | Photovoltaic microgrid grid -connected electricity generation system |
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| CN201621199865.6U CN206195362U (en) | 2016-11-07 | 2016-11-07 | Photovoltaic microgrid grid -connected electricity generation system |
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| CN206195362U true CN206195362U (en) | 2017-05-24 |
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| CN201621199865.6U Active CN206195362U (en) | 2016-11-07 | 2016-11-07 | Photovoltaic microgrid grid -connected electricity generation system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107370229A (en) * | 2017-08-18 | 2017-11-21 | 北京博大水务有限公司 | The bi-membrane method reused water processing system and method for supplying power to of photovoltaic electric and mains-supplied |
| CN107733363A (en) * | 2017-09-30 | 2018-02-23 | 国网青海省电力公司 | Photovoltaic plant data transfer accuracy rate Forecasting Methodology |
| CN108695894A (en) * | 2018-06-19 | 2018-10-23 | 江苏燕山光伏设备有限公司 | A kind of low pressure parallel network power generation mechanism of environmental protection |
| CN110519888A (en) * | 2019-09-03 | 2019-11-29 | 深圳市纳泽光电有限公司 | A kind of LED drive circuit |
| CN110690722A (en) * | 2019-09-19 | 2020-01-14 | 深圳市朝阳辉电气设备有限公司 | Photovoltaic energy storage grid-connected power generation system and operation method thereof |
| CN110707751A (en) * | 2019-11-26 | 2020-01-17 | 佛山市欧亚玛电器实业有限公司 | Solar inversion system |
-
2016
- 2016-11-07 CN CN201621199865.6U patent/CN206195362U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107370229A (en) * | 2017-08-18 | 2017-11-21 | 北京博大水务有限公司 | The bi-membrane method reused water processing system and method for supplying power to of photovoltaic electric and mains-supplied |
| CN107733363A (en) * | 2017-09-30 | 2018-02-23 | 国网青海省电力公司 | Photovoltaic plant data transfer accuracy rate Forecasting Methodology |
| CN107733363B (en) * | 2017-09-30 | 2019-03-26 | 国网青海省电力公司 | Photovoltaic plant data transmit accuracy rate prediction technique |
| CN108695894A (en) * | 2018-06-19 | 2018-10-23 | 江苏燕山光伏设备有限公司 | A kind of low pressure parallel network power generation mechanism of environmental protection |
| CN110519888A (en) * | 2019-09-03 | 2019-11-29 | 深圳市纳泽光电有限公司 | A kind of LED drive circuit |
| CN110690722A (en) * | 2019-09-19 | 2020-01-14 | 深圳市朝阳辉电气设备有限公司 | Photovoltaic energy storage grid-connected power generation system and operation method thereof |
| CN110690722B (en) * | 2019-09-19 | 2024-01-02 | 深圳市朝阳辉电气设备有限公司 | Photovoltaic energy storage grid-connected power generation system and operation method thereof |
| CN110707751A (en) * | 2019-11-26 | 2020-01-17 | 佛山市欧亚玛电器实业有限公司 | Solar inversion system |
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