CN205791567U - A kind of grid-connected power distribution equipment of distributed photovoltaic - Google Patents
A kind of grid-connected power distribution equipment of distributed photovoltaic Download PDFInfo
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- CN205791567U CN205791567U CN201620526258.XU CN201620526258U CN205791567U CN 205791567 U CN205791567 U CN 205791567U CN 201620526258 U CN201620526258 U CN 201620526258U CN 205791567 U CN205791567 U CN 205791567U
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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
Abstract
The utility model discloses a kind of grid-connected power distribution equipment of distributed photovoltaic, including solar photovoltaic assembly, casing, casing is provided with chamber door, the upper end, side of casing is provided with terminals, the opposite side bottom of casing is provided with leading-out terminal, cabinets cavity is provided with solar inverter, grid-connected switch, chopper, permanent-magnet manipulating mechanism and control chamber, solar photovoltaic assembly connects solar inverter by terminals, grid-connected switch is arranged on leading-out terminal, grid-connected switch and chopper are respectively connected to transmission line of electricity, permanent-magnet manipulating mechanism connects chopper, control chamber connects solar photovoltaic assembly and permanent-magnet manipulating mechanism respectively, this utility model structural principle is simple, intelligence degree is high, it is capable of grid-connected distribution system reliability service.
Description
Technical field
This utility model relates to grid-connected technical field, is specially a kind of grid-connected power distribution equipment of distributed photovoltaic.
Background technology
Along with the development of national economy, electricity needs increases rapidly, and electrical network scale constantly expands, but super large rule
The drawback of mould power system highlights the most day by day, and cost is high, it is big to run difficulty, it is difficult to adapt to user increasingly
High security and the reliability requires and diversified power demands.Photovoltaic distributed power generation is advocated and is sent out nearby
Electricity, the most grid-connected, change nearby, the principle used nearby, have pollution less, reliability is high, the energy
Utilization ratio is high, the infield advantage such as flexibly, be a kind of novel, have with broad prospects for development
Electricity and comprehensive utilization of energy mode, it is thus achieved that fast-developing.In China, distributed photovoltaic obtains country
Bureau of Energy, the support of state's net policy and support, be defined as needing the industry of " greatly developing ".Existing
Grid-connected power distribution equipment intelligence degree low, signals collecting efficiency is low, under-voltage/over-voltage protection device application
Deficiency, easily causes security incident.
Utility model content
The purpose of this utility model is to provide a kind of grid-connected power distribution equipment of distributed photovoltaic, above-mentioned to solve
The problem proposed in background technology.
For achieving the above object, this utility model provides following technical scheme: a kind of distributed photovoltaic is grid-connected
Power distribution equipment, including solar photovoltaic assembly and casing, described casing is provided with chamber door, described casing
Upper end, side is provided with terminals, and the opposite side bottom of described casing is provided with leading-out terminal, and described cabinets cavity sets
There are solar inverter, grid-connected switch, chopper, permanent-magnet manipulating mechanism and control chamber, the described sun
Can connect solar inverter by terminals by photovoltaic module, described grid-connected switch is arranged on leading-out terminal, institute
Stating grid-connected switch and described chopper is respectively connected to transmission line of electricity, described permanent-magnet manipulating mechanism connects chopper,
Described control chamber connects solar photovoltaic assembly and permanent-magnet manipulating mechanism respectively.
Preferably, it is provided with microcontroller, MPPT controller, inversion module, Intelligent electric in described control chamber
Table, memory module, under-run/over-run protection module, sampling conditioning module and wireless communication module, described too
Sun can connect microcontroller by sampling conditioning module by photovoltaic module, and described microcontroller connects MPPT respectively
Controller, intelligent electric meter, memory module, under-run/over-run protection module, described MPPT controller connects inversion
Module, described microcontroller connects Surveillance center by wireless communication module.
Preferably, described sampling conditioning module includes that the first transport and placing device, the second transport and placing device, Schmitt trigger
Chip, Hall element, Hall element be connected in parallel resistance A, resistance B, resistance C, resistance D,
Electric capacity A, and access the electrode input end of the first transport and placing device, the negative input of the first transport and placing device and outfan
Connecting, the outfan of the first transport and placing device is sequentially connected with resistance E, resistance G, and resistance F is connected on resistance E and electricity
Resistance G node, resistance G one end connects electric capacity B, the diode B being connected in parallel, and diode B negative pole connects
Diode A positive pole, diode A negative pole accesses power end；Second transport and placing device negative input connects first
Transport and placing device electrode input end, the electrode input end of the second transport and placing device connects resistance I one end, resistance J respectively
One end, resistance I other end ground connection, second transport and placing device outfan connect resistance H one end, resistance H another
End connects electric capacity C one end and Schmitt flip chip input respectively, and the resistance J other end and electric capacity C are another
One end is respectively by TVS pipe ground connection.
Preferably, described under-run/over-run protection module includes audion A, audion B, field-effect transistor,
Audion A colelctor electrode connects resistance O and resistance P junction point, and the resistance O other end accesses power end, electricity
Resistance P other end ground connection, described audion B colelctor electrode connects resistance Q and resistance R junction point, resistance Q
The other end accesses power end, resistance R other end ground connection；Audion A emitter stage connects resistance S one end,
The resistance S other end connects field effect transistor gate, field-effect transistor grounded drain, and source class is by electricity
Resistance T accesses power end, and source class is also connected with logic gates, and audion A is connected with the base stage of audion B
Resistance M and resistance N junction point, resistance N is connected in series resistance M, resistance L, resistance K, and resistance K is another
One end connects alternating current pressure side, resistance N other end ground connection.
Compared with prior art, the beneficial effects of the utility model are:
(1) this utility model structural principle is simple, and intelligence degree is high, and the sampling conditioning module of employing resists
Interference performance is strong, it is possible to the output voltage electric current of Real-time Collection solar photovoltaic assembly, and collecting efficiency is high,
Improve grid-connected efficiency.
(2) the under-run/over-run protection module that this utility model uses can detect grid-connected operation shape in real time
State, it is ensured that grid-connected properly functioning, prevents security incident, it is possible to realizing grid-connected distribution system can
By running.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present utility model；
Fig. 2 is control principle block diagram of the present utility model；
Fig. 3 is sampling conditioning module schematic diagram of the present utility model；
Fig. 4 is that under-run/over-run of the present utility model protects module principle figure.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, to the technology in this utility model embodiment
Scheme is clearly and completely described, it is clear that described embodiment is only this utility model one
Divide embodiment rather than whole embodiments.Based on the embodiment in this utility model, this area is common
The every other embodiment that technical staff is obtained under not making creative work premise, broadly falls into this
The scope of utility model protection.
Fig. 1-4, a kind of technical scheme of this utility model offer: a kind of grid-connected distribution of distributed photovoltaic are provided
Device, including solar photovoltaic assembly 1 and casing 2, described casing 2 is provided with chamber door 3, described casing
The upper end, side of 2 is provided with terminals 4, and the opposite side bottom of described casing 2 is provided with leading-out terminal 5, described case
Body 2 inner chamber be provided with solar inverter 6, grid-connected switch 7, chopper 8, permanent-magnet manipulating mechanism 9 and
Control chamber 10, described solar photovoltaic assembly 1 connects solar inverter 6 by terminals 4, described
Grid-connected switch 7 is arranged on leading-out terminal 5, and described grid-connected switch 7 and described chopper 8 are respectively connected to power transmission line
Road, described permanent-magnet manipulating mechanism 9 connects chopper 8, and described control chamber 10 connects photovoltaic respectively
Assembly 1 and permanent-magnet manipulating mechanism 9；Be provided with in control chamber 10 microcontroller 11, MPPT controller 12,
Inversion module 13, intelligent electric meter 14, memory module 15, under-run/over-run protection module 16, sampling conditioning mould
Block 17 and wireless communication module 18, described solar photovoltaic assembly 1 is by sampling conditioning module 17 even
Connecing microcontroller 11, described microcontroller 11 connects MPPT controller 12, intelligent electric meter 14 respectively, deposits
Storage module 15, under-run/over-run protection module 16, described MPPT controller 12 connects inversion module 13, described
Microcontroller 11 connects Surveillance center 19 by wireless communication module 18.
In the present embodiment, sampling conditioning module includes first transport and placing device the 20, second transport and placing device 21, Schmitt
Flip chip 22, Hall element 23, Hall element 23 be connected in parallel resistance A 1a, resistance B 2a,
Resistance C 3a, resistance D 4a, electric capacity A 1b, and access the electrode input end of the first transport and placing device 20, the
The negative input of one transport and placing device 20 is connected with outfan, and the outfan of the first transport and placing device 20 is sequentially connected with
Resistance E 5a, resistance G 7a, resistance F 6a is connected on resistance E 5a and resistance G 7a node, resistance G 7a
One end connects electric capacity B2b, the diode B 2c being connected in parallel, and diode B 2c negative pole connects diode A 1c
Positive pole, diode A 1c negative pole accesses power end；Second transport and placing device 21 negative input connects the first fortune
Put device 20 electrode input end, the electrode input end of the second transport and placing device 21 connect respectively resistance I 9a one end,
Resistance J 10a one end, resistance I 9a other end ground connection, the second transport and placing device 21 outfan connects resistance H 8a
One end, the resistance H 8a other end connects electric capacity C 3b one end and Schmitt flip chip 22 input respectively,
The resistance J 10a other end and the electric capacity C 3b other end are respectively by TVS pipe 24 ground connection.Hall element
The big voltage of about 220V is converted into the small voltage signal of 11V by 23, transport and placing device as voltage follower,
Then signal is transported to microcontroller 11 after the amplitude limiter circuit and Schmitt flip chip 22 of 3.3V,
The sampling conditioning module capacity of resisting disturbance used is strong, it is possible to the output electricity of Real-time Collection solar photovoltaic assembly
Current voltage, collecting efficiency is high, improves grid-connected efficiency.
In the present embodiment, under-run/over-run protection module includes audion A 1d, audion B 2d, field effect crystalline substance
Body pipe 25, audion A 1d colelctor electrode connects resistance O 15a and resistance P 16a junction point, resistance O 15a
The other end accesses power end, resistance P 16a other end ground connection, and described audion B 2d colelctor electrode connects electricity
Resistance Q 17a and resistance R 18a junction point, the resistance Q 17a other end accesses power end, resistance R 18a
Other end ground connection；Audion A 1d emitter stage connects resistance S 19a one end, and the resistance S 19a other end is even
Connecing field-effect transistor 25 grid, field-effect transistor 25 grounded drain, source class passes through resistance T 20a
Accessing power end, source class is also connected with logic gates 26, the base stage of audion A 1d and audion B 2d
Connecting resistance M 13a and resistance N14a junction point, resistance N14a is connected in series resistance M 13a, resistance
L 21a, resistance K 11a, the resistance K 11a other end connects alternating current pressure side, the resistance N14a other end
Ground connection, when being in overvoltage, audion audion A 1d turns on, and audion B 2d ends, field effect
Transistor 25 turns on, and logic gates 26 is output as low level, closes and drives signal, and inverter is by just
Often duty transfers overvoltage protection state to, when inverter direct current input cathode voltage is too low, and audion
A 1d ends, and audion B 2d turns on, and field-effect transistor 25 turns on, field-effect transistor 25 source
Pole output voltage is low level, and logic gates 26 is output as low level, closes and drives signal, inverter
Under-voltage protection state is transferred to by normal operating conditions.The under-run/over-run protection module that this utility model uses can
Detect grid-connected running status in real time, it is ensured that grid-connected properly functioning, prevent security incident,
It is capable of grid-connected distribution system reliability service.
Embodiment the most of the present utility model, for the ordinary skill people of this area
For Yuan, it is possible to understand that can be real to these in the case of without departing from principle of the present utility model and spirit
Executing example to carry out multiple change, revise, replace and modification, scope of the present utility model is by claims
And equivalent limits.
Claims (4)
1. the grid-connected power distribution equipment of distributed photovoltaic, including solar photovoltaic assembly and casing, its feature
Being: described casing is provided with chamber door, the upper end, side of described casing is provided with terminals, described casing
Opposite side bottom is provided with leading-out terminal, and described cabinets cavity is provided with solar inverter, grid-connected switch, open circuit
Device, permanent-magnet manipulating mechanism and control chamber, described solar photovoltaic assembly connects solar energy by terminals
Inverter, described grid-connected switch is arranged on leading-out terminal, and described grid-connected switch and described chopper are respectively connected to
Transmission line of electricity, described permanent-magnet manipulating mechanism connects chopper, and described control chamber connects photovoltaic respectively
Assembly and permanent-magnet manipulating mechanism.
A kind of grid-connected power distribution equipment of distributed photovoltaic the most according to claim 1, it is characterised in that:
Be provided with in described control chamber microcontroller, MPPT controller, inversion module, intelligent electric meter, memory module,
Under-run/over-run protection module, sampling conditioning module and wireless communication module, described solar photovoltaic assembly leads to
Over-sampling conditioning module connects microcontroller, and described microcontroller connects MPPT controller, Intelligent electric respectively
Table, memory module, under-run/over-run protection module, described MPPT controller connects inversion module, described micro-control
Device processed connects Surveillance center by wireless communication module.
A kind of grid-connected power distribution equipment of distributed photovoltaic the most according to claim 2, it is characterised in that:
Described sampling conditioning module includes that the first transport and placing device, the second transport and placing device, Schmitt flip chip, Hall pass
Sensor, Hall element is connected in parallel resistance A, resistance B, resistance C, resistance D, electric capacity A, and accesses
The electrode input end of the first transport and placing device, the negative input of the first transport and placing device is connected with outfan, the first fortune
The outfan putting device is sequentially connected with resistance E, resistance G, and resistance F is connected on resistance E and resistance G node, electricity
Resistance G one end connects electric capacity B, the diode B being connected in parallel, and diode B negative pole connects diode A positive pole,
Diode A negative pole accesses power end；Second transport and placing device negative input connects the first transport and placing device positive pole input
End, the electrode input end of the second transport and placing device connects resistance I one end, resistance J one end respectively, and resistance I is another
One end ground connection, the second transport and placing device outfan connects resistance H one end, and the resistance H other end connects electric capacity C respectively
One end and Schmitt flip chip input, the resistance J other end and the electric capacity C other end pass through TVS respectively
Pipe ground connection.
A kind of grid-connected power distribution equipment of distributed photovoltaic the most according to claim 1, it is characterised in that:
Described under-run/over-run protection module includes audion A, audion B, field-effect transistor, audion A current collection
Pole connects resistance O and resistance P junction point, and the resistance O other end accesses power end, another termination of resistance P
Ground, described audion B colelctor electrode connects resistance Q and resistance R junction point, and the resistance Q other end accesses electricity
Source, resistance R other end ground connection；Audion A emitter stage connects resistance S one end, the resistance S other end
Connecting field effect transistor gate, field-effect transistor grounded drain, source class accesses power supply by resistance T
End, source class is also connected with logic gates, and the base stage of audion A and audion B is connected resistance M and resistance N
Junction point, resistance N is connected in series resistance M, resistance L, resistance K, and the resistance K other end connects alternating current
Pressure side, resistance N other end ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620526258.XU CN205791567U (en) | 2016-06-02 | 2016-06-02 | A kind of grid-connected power distribution equipment of distributed photovoltaic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620526258.XU CN205791567U (en) | 2016-06-02 | 2016-06-02 | A kind of grid-connected power distribution equipment of distributed photovoltaic |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205791567U true CN205791567U (en) | 2016-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620526258.XU Expired - Fee Related CN205791567U (en) | 2016-06-02 | 2016-06-02 | A kind of grid-connected power distribution equipment of distributed photovoltaic |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205791567U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107046378A (en) * | 2017-04-06 | 2017-08-15 | 哈尔滨理工大学 | A kind of two-way Z sources three-level inverter |
| CN113852348A (en) * | 2021-08-11 | 2021-12-28 | 华翔翔能科技股份有限公司 | Permanent magnet type counter-excitation switch applied to photovoltaic power generation system |
-
2016
- 2016-06-02 CN CN201620526258.XU patent/CN205791567U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107046378A (en) * | 2017-04-06 | 2017-08-15 | 哈尔滨理工大学 | A kind of two-way Z sources three-level inverter |
| CN113852348A (en) * | 2021-08-11 | 2021-12-28 | 华翔翔能科技股份有限公司 | Permanent magnet type counter-excitation switch applied to photovoltaic power generation system |
| CN113852348B (en) * | 2021-08-11 | 2024-03-26 | 华翔翔能科技股份有限公司 | Permanent magnet type opposite-excitation switch applied to photovoltaic power generation system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161207 Termination date: 20170602 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |