CN107546766A - A kind of distributed optimization device system - Google Patents
A kind of distributed optimization device system Download PDFInfo
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- CN107546766A CN107546766A CN201610518462.1A CN201610518462A CN107546766A CN 107546766 A CN107546766 A CN 107546766A CN 201610518462 A CN201610518462 A CN 201610518462A CN 107546766 A CN107546766 A CN 107546766A
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Abstract
The invention provides a kind of distributed optimization device system.The optimizer system includes N number of optimizer string, each optimizer string includes the string optimizer connected by DC power line and M sub- optimizers, every sub- optimizer and string optimizer have direct-current signaling device, every sub- optimizer carries out bidirectional data interaction by direct-current signaling device through DC power line and string optimizer, and string optimizer also has the first radio communication device；One inverter, inverter is accessed after N number of optimizer connection in series-parallel；One communicator, has the second radio communication device, and string optimizer wirelessly carries out bidirectional data interaction with communicator by the first radio communication device and the second radio communication device；Wherein N, M are for integer and more than or equal to 1.A kind of distributed optimization device system provided by the invention can guarantee that the data transfer between all sub- optimizers and communicator is reliable and stable.
Description
Technical field
The present invention relates to solar energy generation technology field, more particularly to a kind of distributed optimization device system.
Background technology
Due to the recyclability and spatter property of solar energy, parallel network power generation technology is able to fast development.Optimization
Device structure is one of which efficiently grid-connected scheme, and each photovoltaic module connects the excellent of lifting press
Change device, power network will be transferred energy to by centralized inverter after the output end series connection of optimizer.Optimizer
The MPPT maximum power point tracking decoupling of photovoltaic array is the MPPT maximum power point tracking of each component by structure, is being solved
Photovoltaic module mismatch and part masking problem while, can also monitoring assembly performance, facilitate system
Operation maintenance.Optimizer can also include defencive function, such as remote shutdown function, anti-arcing defencive function etc..
As shown in figure 1, for optimizer system 100, generally include many platform optimizers 110 and one logical
Believe that device 120 accesses inverter 130 after connecting, inverter 130 is connected to external electrical network.The optimizer 100
The service data of connected photovoltaic module 140 can be sent to communicator 120, then communicator 120
Database service data being sent to by internet 150 on server 160.Wherein service data can be with
Magnitude of voltage, current value or temperature including photovoltaic module 140 etc..Likewise, server 160 can also lead to
Cross communicator 120 to optimizer 110 send operating instruction, the operating instruction can include order, data or
Person's software etc..The optimizer system 100 can monitor the running situation of each photovoltaic module 140 in real time,
And can provide protection shut-off etc. service, such as when find temperature it is too high, can close corresponding to optimizer, guarantee
The general safety of system.
Fig. 2 shows the optimizer system 200 with 2 string optimizer strings 210,220, using direct current power
The medium that line 230 communicates as data.Each optimizer string 210,220 each has communicator 250,260,
Multiple communicators are just needed when optimizer system 200 has more string optimizer strings, its shortcoming is the increase in logical
Believe the quantity of device, so as to add the Meteorological of communicator, while add each in multiple communicators
The individual expense for being required for online transmission data.
Fig. 3 shows the optimizer system 300 with 2 string optimizer strings 310,320, using radio communication
To transmit the data between optimizer 330 and communicator 340.In the case of using communication,
Each optimizer 330 has radio communication device, data can be relax into communicator in a manner of not being in the mood for
340.But because each optimizer 330 is different from the distance that communicator 340 is mutual, signal intensity
It can decay with transmission range, and can have barrier etc. to influence communication quality, be vulnerable to external interference letter
Number influence, so as to cause data communication disruption or unstable.To avoid interfering for data-signal, because
This will define different networks, so require more complicated Networking Design.It is simultaneously guarantee data point
Promptness, channel is avoided to block, the quantity of optimizer can be limited.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of optimizer system, ensure all sub- optimizers and lead to
Believe that the data transfer between device is reliable and stable.
In order to solve the above technical problems, the present invention provides a kind of distributed optimization device system, including：
N number of optimizer string, each optimizer string include by the string optimizer that DC power line is connected with
M sub- optimizers, each sub- optimizer and the string optimizer have direct-current signaling device, each son
Optimizer carries out bi-directional data friendship by the direct-current signaling device through the DC power line and the string optimizer
Mutually, the string optimizer also has the first radio communication device；
One inverter, the inverter is accessed after N number of optimizer connection in series-parallel；
One communicator, has the second radio communication device, and the string optimizer and the communicator pass through described the
One radio communication device and second radio communication device wirelessly carry out bidirectional data interaction；
Wherein N, M are for integer and more than or equal to 1.
In one embodiment of this invention, each sub- optimizer connects a photovoltaic module, each son
Optimizer can obtain the service data of the photovoltaic module of its connection.
In one embodiment of this invention, two-way number is carried out between each sub- optimizer and the string optimizer
It is 500~5000bit/s according to interactive data transmission bauds.
In one embodiment of this invention, two-way number is carried out between each sub- optimizer and the string optimizer
It is 10~100KHz according to interactive frequency.
In one embodiment of this invention, the string optimizer and the communicator use point-to-point communication.
In one embodiment of this invention, each sub- optimizer has an identiflication number, the identiflication number by
Series Code n and sub- numbering m compositions, wherein Series Code n is the numbering of the optimizer string, and sub- numbering m is described
The digital number of sub- optimizer, n, m are integer, and n is from 1 to N, and m is from 1 to M.
A kind of distributed optimization device system provided by the invention, is combined by direct-current signaling and communication
Means, ensure that the data transfer between all sub- optimizers and communicator is reliable and stable.
Brief description of the drawings
For the above objects, features and advantages of the present invention can be become apparent, below in conjunction with accompanying drawing to this hair
Bright embodiment elaborates, wherein：
Fig. 1 shows the structural representation of an optimizer system of the prior art.
Fig. 2 shows the structural representation of another optimizer system of the prior art.
Fig. 3 shows the structural representation of another optimizer system of the prior art.
Fig. 4 shows the structural representation of one embodiment of the present of invention.
Embodiment
It is that they are included and form the one of the application to provide further understanding of the invention including accompanying drawing
Part, accompanying drawing show embodiments of the invention, and are played together with this specification and explain the principle of the invention
Effect.In accompanying drawing：
Fig. 4 shows the structural representation of one embodiment of the present of invention.As illustrated, distributed optimization device
System 400 includes N number of optimizer string, a communicator 440 and an inverter 450.Wherein N be integer and
More than or equal to 1, figure example of passing the imperial examinations at the provincial level illustrates two optimizer strings 410,410 '.
Optimizer string 410 includes the string optimizer 430 connected by DC power line 460 and M son is excellent
Change device 420.Wherein M is integer and more than or equal to 1, and figure example of passing the imperial examinations at the provincial level illustrates two sub- optimizers 421,422.
Sub- optimizer 421,422 and string optimizer 430 are respectively provided with direct-current signaling device 470.Sub- optimizer 421,422
Bi-directional data friendship is carried out through DC power line 460 and string optimizer 430 by respective direct-current signaling device 470
Mutually.String optimizer 430 also has the first radio communication device 431.
Likewise, optimizer string 410 ' include the string optimizer 430 ' connected by DC power line 460 and
M sub- optimizers 420 '.Figure example of passing the imperial examinations at the provincial level illustrates two sub- optimizers 421 ', 422 '.Sub- optimizer 421 ', 422 '
Direct-current signaling device 470 ' is respectively provided with string optimizer 430 '.Sub- optimizer 421 ', 422 ' passes through respective direct current
Communicator 470 ' carries out bidirectional data interaction through DC power line 460 and string optimizer 430 '.String optimizer 430 '
Also there is the first radio communication device 431 '.
Inverter 450 is accessed after optimizer string 410 and optimizer string 410 ' are in parallel.
Communicator 440 has the second radio communication device 441.Optimizer 430,430 ' of going here and there is logical with communicator 440
Cross the first radio communication device 431,431 ' and the second radio communication device 441 wirelessly carries out bi-directional data
Interaction.
In one embodiment, each of distributed optimization device system 400 sub- optimizer 421,422,421 ', 422 '
A photovoltaic module is connected respectively, and sub- optimizer 421,422,421 ', 422 ' can obtain the photovoltaic module of its connection
Service data, service data here includes magnitude of voltage, current value or temperature of photovoltaic module etc..
Described in connecting, the running of distributed optimization device system 400 includes collection service data and sends instruction
Information, it is specifically described by taking optimizer string 410 as an example.
The collection service data process of distributed optimization device system 400 is as follows：
Each sub- optimizer 421,422 of optimizer string 410 obtains the service data of the photovoltaic module each connected；
The service data of acquisition is passed through direct current by sub- optimizer 421,422 by respective direct-current signaling device 470
Power line 460 is sent on string optimizer 430 in a wired fashion；
String optimizer 430 collects the operation number that each sub- optimizer 421,422 on optimizer string 410 is obtained
According to, and service data is wirelessly transmitted to communicator 440 by first wireless device 431；
Service data can be sent to external equipment by communicator 440 by wired or wireless way, such as be serviced
On device.
The transmission command information process of distributed optimization device system 400 is as follows：
Communicator 440 obtains command information from external equipment, such as server；
Command information is wirelessly transmitted to string optimizer 430 by communicator 440 by second wireless device；
String optimizer 430 is by direct-current signaling device 470 by the command information of acquisition in a wired fashion through direct current
The specific sub- optimizer that the line of force 460 is sent on sub- optimizer 421,422 or optimizer string 410；
Sub- optimizer 421,422 obtains and performs the command information.
Distributed optimization device system 400 by above-mentioned collection service data and send command information communication means,
Enable distributed optimization device system 400 monitor in real time on optimizer string 410 with sub- optimizer 421,422
Connection each photovoltaic module running situation, and can provide protection shut-off etc. service, such as when discovery certain
The temperature of individual photovoltaic module is too high, can close corresponding to sub- optimizer, ensure the general safety of system.Similarly,
Optimizer string 410 ' is similarly under the implementing monitoring of distributed optimization device system 400.
What a kind of distributed optimization device system provided by the invention was combined by direct-current signaling and communication
Means so that N number of optimizer string, each optimizer string have each sub- optimizer energy in M sub- optimizers
Ensure that the data transfer between communicator is reliable and stable.
Further, can be controlled at about 20 for the sub- optimizer quantity in each optimizer string, sub- optimization
Device uses the low direct-current signaling technology of transmission speed through DC power line, i.e. between every sub- optimizer and string optimizer
Carry out bidirectional data interaction data transmission bauds be 500~5000bit/s (bps), with effectively reduction into
This.Further, it is also possible to using the low direct-current signaling technology of frequency, i.e. enter between every sub- optimizer and string optimizer
The frequency of row bidirectional data interaction is 10~100KHz (KHz), lifts antijamming capability, it is ensured that direct current
The reliability of communication.
On the other hand, for the radio communication between string optimizer and communicator, because each optimizer string only has
One string optimizer, thus go here and there optimizer total number it is few, can these string optimizers close proximity to communicator,
To reduce external disturbance, make radio communication more reliable.In addition, because the total number of string optimizer is few, string optimization
Point-to-point communication can be used between device and communicator, avoids net form networking, so as to simplify whole distributed optimization device
System, and improve reliability.It is possible thereby to using simple wireless communication technology, cost is reduced.
Preferably, every sub- optimizer of distributed optimization device system has identiflication number, and the identiflication number is by going here and there
Numbering n and sub- numbering m compositions, wherein Series Code n are the numbering of place optimizer string, and sub- numbering m optimizes for son
The digital number of device, wherein n, m are integer, and n is from 1 to N, and m is from 1 to M.In the prior art, communicate
Device collects the data of all sub- optimizers, and every group of data need the sequence number of corresponding each sub- optimizer.The sequence number
It is generally very long, marked with 8-12 bit formats, such as xxxxxxxx.Although difference is easily distinguished by the sequence number
Sub- optimizer, but can so increase the data volume to be transmitted, and then influence the communication of whole optimizer system
Speed.In the present embodiment, starting to assign each optimizer string different Series Code n when networking,
Assign each sub- optimizer different sub numbering m, Series Code n and son numbering m are combined as each sub- optimizer
Identiflication number, the identiflication number is stored in communicator, communication data can below uses the identiflication number
Come carry out.Specifically, the Series Code n of N number of optimizer string be 1,2 ... N；The sub- numbering m of sub- optimizer
The M for 1,2 ....Identiflication number so for every sub- optimizer inside optimizer system is exactly nm.Ginseng
Fig. 4 is examined, Series Code n corresponding to the optimizer string 410 of distributed optimization device system 400 is 1, optimizer string 410 '
Corresponding Series Code number is 2.Son coding m corresponding to sub- optimizer 421,422 in optimizer string 410 is respectively 1,
2, son coding m is respectively 1,2 corresponding to the sub- optimizer 421 ', 422 ' in optimizer string 410 '.It is readily appreciated that
, the identiflication number nm of sub- optimizer 421 is 11, and identification corresponding to sub- optimizer 422,421 ', 422 ' is compiled
Number nm is respectively 12,21,22.During installation system, by the identiflication number of the sub- optimizer and its position
When putting contact, original sequence number of sub- optimizer is just corresponding with identiflication number nm, can be stored in logical
In the database for believing device and server, and the identiflication number is sent to sub- optimizer, in the communication of sub- optimizer
When use identiflication number nm, without with original sequence number xxxxxxxx.Therefore this kind of method is passed through
Volume of transmitted data can be effectively reduced, data transfer is more stable reliable.
A kind of distributed optimization device system provided by the invention, in sub- optimizer and string optimizer
Between use direct-current signaling, use radio communication between string optimizer and communicator, pass through this kind of combination guarantor
The data transfer demonstrate,proved between each sub- optimizer, string optimizer and communicator is reliable and stable.The distributed optimization device system
System improves overall communication performance, can reduce cost 30% than the existing communication technology；Compared with the prior art,
The quantity of the attachable sub- optimizer of single communicator is significantly increased, and improves the reliable of system integrated communication
Property.
Although the present invention describes with reference to current specific embodiment, common skill in the art
Art personnel are it should be appreciated that the embodiment of the above is intended merely to the explanation present invention, without departing from essence of the invention
Various equivalent change or replacement can be also made in the case of god, therefore, as long as in the connotation of the present invention
In the range of change, modification to above-described embodiment will all fall in the range of following claims.
Claims (6)
1. a kind of distributed optimization device system, including：
N number of optimizer string, each optimizer string include by the string optimizer that DC power line is connected with
M sub- optimizers, each sub- optimizer and the string optimizer have direct-current signaling device, each son
Optimizer carries out bi-directional data friendship by the direct-current signaling device through the DC power line and the string optimizer
Mutually, the string optimizer also has the first radio communication device；
One inverter, the inverter is accessed after N number of optimizer connection in series-parallel；
One communicator, has the second radio communication device, and the string optimizer and the communicator pass through described the
One radio communication device and second radio communication device wirelessly carry out bidirectional data interaction；
Wherein N, M are for integer and more than or equal to 1.
2. distributed optimization device system as claimed in claim 1, it is characterised in that each sub- optimizer
A photovoltaic module is connected, each sub- optimizer can obtain the service data of the photovoltaic module of its connection.
3. distributed optimization device system as claimed in claim 1, it is characterised in that each sub- optimizer
The data transmission bauds that bidirectional data interaction is carried out between the string optimizer is 500~5000bit/s.
4. distributed optimization device system as claimed in claim 1, it is characterised in that each sub- optimizer
The frequency that bidirectional data interaction is carried out between the string optimizer is 10~100KHz.
5. distributed optimization device system as claimed in claim 1, it is characterised in that the string optimizer and institute
State communicator and use point-to-point communication.
6. distributed optimization device system as claimed in claim 1, it is characterised in that each sub- optimizer
With identiflication number, the identiflication number is made up of Series Code n and son numbering m, and wherein Series Code n is described excellent
Change the numbering of device string, sub- numbering m is the digital number of the sub- optimizer, and n, m are integer, n from 1 to N,
M is from 1 to M.
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| CN201610518462.1A CN107546766A (en) | 2016-06-28 | 2016-06-28 | A kind of distributed optimization device system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110798246A (en) * | 2019-09-29 | 2020-02-14 | 华为技术有限公司 | Interface circuit, group string and system applied to power line communication |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103890956A (en) * | 2011-06-22 | 2014-06-25 | 摩根阳光公司 | Photovoltaic power generation system |
| CN104868846A (en) * | 2015-06-08 | 2015-08-26 | 江汉大学 | Solar photovoltaic module array data acquisition method based on wireless internet of things |
-
2016
- 2016-06-28 CN CN201610518462.1A patent/CN107546766A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103890956A (en) * | 2011-06-22 | 2014-06-25 | 摩根阳光公司 | Photovoltaic power generation system |
| CN104868846A (en) * | 2015-06-08 | 2015-08-26 | 江汉大学 | Solar photovoltaic module array data acquisition method based on wireless internet of things |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110798246A (en) * | 2019-09-29 | 2020-02-14 | 华为技术有限公司 | Interface circuit, group string and system applied to power line communication |
| CN110798246B (en) * | 2019-09-29 | 2022-02-25 | 华为数字能源技术有限公司 | Interface circuit, group string and system applied to power line communication |
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Effective date of registration: 20180327 Address after: 314400 Zhejiang city of Haining province Haining Longxing Road Economic Development Zone No. 118 in the main office building room 211 Applicant after: Zhejiang Ying Da wick Electronics Co., Ltd. Address before: 314050 Jiaxing, South Lake District, Zhejiang, Asia Pacific Road, No. 1 Applicant before: Zhejiang Yuneng Technology Co., Ltd. |
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