CN104899174B - The method of the automatic distribution address of many series connection of photovoltaic DC-to-AC converter - Google Patents
The method of the automatic distribution address of many series connection of photovoltaic DC-to-AC converter Download PDFInfo
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- CN104899174B CN104899174B CN201510167998.9A CN201510167998A CN104899174B CN 104899174 B CN104899174 B CN 104899174B CN 201510167998 A CN201510167998 A CN 201510167998A CN 104899174 B CN104899174 B CN 104899174B
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- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000012544 monitoring process Methods 0.000 claims abstract description 120
- 230000004044 response Effects 0.000 claims abstract description 36
- 230000006854 communication Effects 0.000 claims abstract description 27
- 238000004891 communication Methods 0.000 claims abstract description 26
- 238000012163 sequencing technique Methods 0.000 claims abstract description 8
- 230000005540 biological transmission Effects 0.000 claims description 5
- 238000012790 confirmation Methods 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 abstract description 5
- 238000013459 approach Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/40—Bus structure
- G06F13/4004—Coupling between buses
- G06F13/4027—Coupling between buses using bus bridges
- G06F13/404—Coupling between buses using bus bridges with address mapping
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- H02J13/0013—
Abstract
A kind of method of the automatic distribution address of many series connection of photovoltaic DC-to-AC converter, comprising：S1, by many series connection photovoltaic DC-to-AC converters be connected by converter with HMI monitoring systems；S2, HMI monitoring system send the instruction re-registered, and the address of photovoltaic DC-to-AC converter is changed into 0；S3, HMI monitoring system send the instruction for obtaining sequence number, and photovoltaic DC-to-AC converter is staggered the time according to the response time obtained by sequence number and transmits sequence number to HMI monitoring systems；S4, the sequencing reached according to sequence number, it is that photovoltaic DC-to-AC converter distributes address automatically that HMI monitoring systems are incremented by principle according to address；S5, photovoltaic DC-to-AC converter are set up with HMI monitoring systems and communicated, and after parameter query instruction is received, related data is transmitted to HMI monitoring systems and shown.The present invention effectively increases distribution reliability, stability and accuracy without address of manually participating in the distribution；Also save manpower and time cost simultaneously so that communication efficiency is greatly improved, so as to realize the monitoring and maintenance to grid-connected system.
Description
Technical field
The present invention relates to a kind of method that inverter distributes address automatically, after many photovoltaic DC-to-AC converter series connection
The method of automatic distribution address, belongs to the inverter communications field.
Background technology
With the improvement of people ' s living standards with the technological progress of society, electric energy turns into be had to rely in people's daily life
The energy.But the primary energy such as coal, oil is increasingly reduced with continuous exploitation, and people are using these energy
Meanwhile, huge pollution is also caused to natural environment.Therefore, solve energy problem basic method be develop environment-friendly type can
The renewable sources of energy, wherein solar power generation are exactly important developing direction.
With pay attention to day by day of the countries in the world to photovoltaic generation, the installation scale and capacity of photovoltaic plant are also continued to increase,
Higher requirement is it is also proposed to improving the communication monitoring efficiency of photovoltaic plant and reducing human cost.
For the photovoltaic plant of many series connection, the state of all inverters can be checked by a monitoring interface, is
Meet user benefit.And if wanting to realize this target, it is necessary to it is each inverter distribution address, only distributes ground unitedly
Behind location, monitoring interface could set up proper communication with it, without influenceing the communication link with other inverters.
At present in the prior art, common is manual allocation address for inverter distribution address approach.This method is needed
Want field personnel to connect every inverter, distribute address by host computer interface for it, this method inefficiency causes
The increase of human cost.
The content of the invention
It is an object of the invention to provide a kind of method of the automatic distribution address of many series connection of photovoltaic DC-to-AC converter, without artificial
Participate in, the mistake for reducing human factor and causing, effectively increase distribution reliability, stability and accuracy；Also save simultaneously
About manpower and time cost so that communication efficiency is greatly improved, so as to realize the monitoring and maintenance to grid-connected system.
In order to achieve the above object, the present invention provides a kind of method of the automatic distribution address of many series connection of photovoltaic DC-to-AC converter,
Suitable for the grid-connected system of many photovoltaic DC-to-AC converter series connection；This method is specifically comprised the steps of：
S1, by many series connection photovoltaic DC-to-AC converters be connected by converter with HMI monitoring systems；
S2, HMI monitoring system send the instruction re-registered to all photovoltaic DC-to-AC converters, by the ground of all photovoltaic DC-to-AC converters
It is revised as 0 in location；
S3, HMI monitoring system to all photovoltaic DC-to-AC converters send obtain sequence number instruction, every photovoltaic DC-to-AC converter according to
The obtained inverter response time is calculated by respective sequence number, staggers the time transmit each self-corresponding sequence to HMI monitoring systems respectively
Number；
S4, the sequence number transmitted according to all photovoltaic DC-to-AC converters sequencing, HMI monitoring systems are incremented by original according to address
Then address is distributed automatically for corresponding photovoltaic DC-to-AC converter；
S5, each photovoltaic DC-to-AC converter set up communication connection between HMI monitoring systems respectively, are receiving HMI monitoring system
Unite after the parameter query instruction sent, respective related data is transmitted to HMI monitoring systems and shown, with to each photovoltaic
Inverter is monitored and safeguarded.
In described S1, converter turns RS485/422 converter using USB；Described HMI monitoring interfaces and converter
Between using USB communication interfaces connection；Between the photovoltaic DC-to-AC converter of described many series connection and photovoltaic DC-to-AC converter and converter
Between using common netting twine using RS485/422 communication interface connect.
In described S2, HMI monitoring systems repeatedly send the instruction re-registered to all photovoltaic DC-to-AC converters, it is ensured that
All photovoltaic DC-to-AC converters can modify the addressed into 0.
Further, described HMI monitoring systems are repeated 3 times the instruction for sending and re-registering to all photovoltaic DC-to-AC converters.
In described S3, specifically comprise the steps of：
S31, every photovoltaic DC-to-AC converter calculate respective inverter response time T respectively, and calculation formula is：T=X%32+1,
Wherein, the initial value of variable X is the sequence number of each photovoltaic DC-to-AC converter, and % represents complementation；
S32, HMI monitoring system send the instruction for obtaining sequence number to all photovoltaic DC-to-AC converters；Every photovoltaic DC-to-AC converter
After the instruction for obtaining sequence number is received, the inverter response time obtained respectively according to being calculated in S31 is waited until
Response time is arrived, then its corresponding sequence number is transferred to HMI monitoring systems by corresponding photovoltaic DC-to-AC converter；
S33, HMI monitoring system judge whether to receive the sequence number that all photovoltaic DC-to-AC converters are replied；In this way, then continue to hold
Row S4；If not, continuing executing with S34；
S34, the photovoltaic DC-to-AC converter for transmitting sequence number to HMI monitoring systems for not yet succeeding, recalculate its corresponding
Inverter response time T, calculation formula is：X’=X/32；T= X’%32+1；
S35, after certain time interval, HMI monitoring systems send again obtain sequence number instruction；Now, still
The inverter that the failed photovoltaic DC-to-AC converter for transmitting sequence number to HMI monitoring systems can be obtained according to being recalculated in S34 respectively
Response time progress waits until that the response time arrives, then its corresponding sequence number is transferred to HMI prisons by corresponding photovoltaic DC-to-AC converter
Control system；And return to execution S33.
In described S35, HMI monitoring systems send the instruction for once obtaining sequence number at interval of 2s to photovoltaic DC-to-AC converter.
In described S4, specifically comprise the steps of：
S41, HMI monitoring system are stored the sequence number of all photovoltaic DC-to-AC converters received；
S42, transmitted to the sequencing of HMI monitoring systems, HMI monitoring systems according to the sequence number of each photovoltaic DC-to-AC converter
According to the incremental principle in distribution address, it is followed successively by each photovoltaic DC-to-AC converter distribution address, i.e. sequence number and more first transmits to HMI monitoring
The address that the photovoltaic DC-to-AC converter of system is assigned to is smaller, and sequence number is transmitted to the photovoltaic DC-to-AC converter distribution of HMI monitoring systems more afterwards
The address arrived is bigger；And HMI monitoring systems will preserve maximum address information；
S43, each photovoltaic DC-to-AC converter receive and parse through out the address distributed by HMI monitoring systems respectively, then are supervised to HMI
Control system sends confirmation.
The method of the automatic distribution address of many series connection of photovoltaic DC-to-AC converter provided by the present invention, is also included：S6, HMI are monitored
System repeats to send the instruction for obtaining sequence number at a certain time interval to photovoltaic DC-to-AC converter, for causing because of communication disruption
The deleted photovoltaic DC-to-AC converter in address, or the photovoltaic DC-to-AC converter newly increased, new address is distributed according to S3~S4 for it；And
Photovoltaic DC-to-AC converter for successfully distributing address, then no longer mutually should obtain the instruction of sequence number.
In summary, the method for the automatic distribution address of many series connection of photovoltaic DC-to-AC converter provided by the present invention, passes through definition
Strict and perfect communication protocol, to realize that the address of photovoltaic DC-to-AC converter is distributed automatically, without artificial participation, reduce it is artificial because
Element and the mistake that causes, effectively increase distribution reliability, stability and accuracy；Simultaneously also save manpower and time into
This so that communication efficiency is greatly improved, so as to realize the monitoring and maintenance to grid-connected system.
Brief description of the drawings
Fig. 1 is the automatic Organization Chart for distributing address of many series connection of photovoltaic DC-to-AC converter in the present invention；
Fig. 2 is the automatic method flow diagram for distributing address of many series connection of photovoltaic DC-to-AC converter in the present invention；
Fig. 3 is the automatic protocol related figure for distributing address of many series connection of photovoltaic DC-to-AC converter in the present invention.
Embodiment
Below according to Fig. 1~Fig. 3, presently preferred embodiments of the present invention is illustrated.
The method of the automatic distribution address of many series connection of photovoltaic DC-to-AC converter provided by the present invention, it is adaptable to as shown in Figure 1
The grid-connected system of many photovoltaic DC-to-AC converter series connection；As shown in Fig. 2 this method is specifically comprised the steps of：
S1, as shown in figure 1, the photovoltaic DC-to-AC converter 100 of many series connection to be passed through to the HMI at converter 200 and PC ends（Human
Machine Interface, man-machine interface）Monitoring system 300 is connected, and the driving of correct mounting converter 200 and
It is correct to install and configuration HMI monitoring systems；
S2, HMI monitoring system 300 sends the instruction re-registered to all photovoltaic DC-to-AC converters 100, by all photovoltaic inversions
It is revised as 0 in the address of device 100；As shown in figure 3, the instruction re-registered sent for HMI monitoring systems 300, each photovoltaic
Inverter 100 does not send response to HMI monitoring systems 300；
S3, HMI monitoring system 300 sends the instruction for obtaining sequence number, every photovoltaic inversion to all photovoltaic DC-to-AC converters 100
Device 100 calculates the obtained inverter response time according to by respective sequence number, staggers the time transmitted respectively to HMI monitoring systems 300 respectively
Self-corresponding sequence number；
S4, the sequence number transmitted according to all photovoltaic DC-to-AC converters 100 sequencing, HMI monitoring systems 300 are according to address
It is that corresponding photovoltaic DC-to-AC converter distributes address automatically to be incremented by principle；
After S5, each photovoltaic DC-to-AC converter 100 are allocated successfully in address, it sets up just between HMI monitoring systems 300 respectively
Normal communication connection, after the parameter query instruction that HMI monitoring systems 300 send is received, as shown in figure 3, by respective phase
Close data transfer to HMI monitoring systems 300 to be shown, to carry out effectively the normal operation of each photovoltaic DC-to-AC converter 100
Monitoring and maintenance.
In described S1, converter 200 turns RS485/422 converter using USB；Described HMI monitoring interfaces 300 with
Connected between converter 200 using USB communication interfaces；Between the photovoltaic DC-to-AC converter 100 of described many series connection and photovoltaic is inverse
Become and communication interface connection of the common netting twine using RS485/422 is utilized between device 100 and converter 200.
In described S2, HMI monitoring systems 300 repeatedly send the finger re-registered to all photovoltaic DC-to-AC converters 100
Order, it is ensured that all photovoltaic DC-to-AC converters 100 can modify the addressed into 0, to prevent from wherein having any one photovoltaic DC-to-AC converter 100
Due to being interfered or other factors and chartered address before not receiving the instruction re-registered and failing to remove, from
And cause the registration failure of photovoltaic DC-to-AC converter 100.
In the present embodiment, HMI monitoring systems 300 are repeated 3 times the finger for sending and re-registering to all photovoltaic DC-to-AC converters 100
Order.
Due to many photovoltaic DC-to-AC converters 100 in the present invention to be connected in series, when the acquisition sequence of HMI monitoring systems 300
Number instruction when issuing, all reply each self-corresponding sequence to HMI monitoring systems 300 simultaneously if all of photovoltaic DC-to-AC converter 100
Row number, then RS485/422 buses can be caused to block, data entanglement；Accordingly, it would be desirable to be blocked up using the bus that can evade described in S3
The method of plug makes HMI monitoring systems 300 correctly obtain the sequence number of each photovoltaic DC-to-AC converter 100, and it is specifically comprised the steps of：
S31, every photovoltaic DC-to-AC converter 100 calculate respective inverter response time T respectively, and calculation formula is：T=X%32+
1, wherein, the initial value of variable X is the sequence number of each photovoltaic DC-to-AC converter, and % represents complementation；
S32, HMI monitoring system 300 sends the instruction for obtaining sequence number to all photovoltaic DC-to-AC converters 100；Every photovoltaic
Inverter 100 is after the instruction for obtaining sequence number is received, and the inverter response time obtained respectively according to being calculated in S31 is carried out
Wait until that the response time arrives, then its corresponding sequence number is transferred to HMI monitoring systems by corresponding photovoltaic DC-to-AC converter 100
300；
S33, HMI monitoring system 300 judges whether to receive the sequence number that all photovoltaic DC-to-AC converters 100 are replied；In this way, then
Continue executing with S4；If not, continuing executing with S34；
, should if having some identical in the inverter response time that each obtained photovoltaic DC-to-AC converter 100 is calculated in S31
A little photovoltaic DC-to-AC converters 100 then can transmit its each self-corresponding sequence number to HMI monitoring systems 300 simultaneously at identical time point,
So as to cause bus to block, sequence number bust this so that HMI monitoring systems 300 can not receive those photovoltaic DC-to-AC converters
Sequence number；
S34, the photovoltaic DC-to-AC converter 100 for transmitting sequence number to HMI monitoring systems 300 for not yet succeeding, recalculate it
Corresponding inverter response time T, calculation formula is：X’=X/32；T= X’%32+1；
S35, after certain time interval, HMI monitoring systems 300 send again obtain sequence number instruction；Now,
The photovoltaic DC-to-AC converter 100 for transmitting sequence number to HMI monitoring systems 300 that not yet succeeds can be obtained according to being recalculated in S34 respectively
The inverter response time carry out waiting until that the response time arrives, then corresponding photovoltaic DC-to-AC converter 100 is by its corresponding sequence number
It is transferred to HMI monitoring systems 300；And return to execution S33.
In described S35, described time interval is for 2s, i.e. HMI monitoring systems 300 at interval of 2s to photovoltaic DC-to-AC converter
100 send the instruction for once obtaining sequence number.
In a preferred embodiment of the invention, it is assumed that have 32 inverter series connection；If what is calculated for the first time is each
The inverter response time T of individual photovoltaic DC-to-AC converter 100 is different from, then obtain sequence number when HMI monitoring systems 300 are sent
After instruction, each photovoltaic DC-to-AC converter 100 carries out waiting until that the response time arrives respectively according to the respective inverter response time,
Then its corresponding sequence number is replied to HMI monitoring systems 300 by corresponding photovoltaic DC-to-AC converter 100, will not now there is many
The situation of the sequence number simultaneous transmission of platform photovoltaic DC-to-AC converter.If each photovoltaic DC-to-AC converter 100 that ought be calculated for the first time is inverse
Become device response time T in have 3 it is identical when, then can cause the photovoltaic DC-to-AC converter 100 with the identical inverter response time simultaneously
Sequence number is transmitted to HMI monitoring systems 300, so that bus is blocked, sequence number bust this.In order to solve this problem,
Variable X is recalculated to this 3 response time identical photovoltaic DC-to-AC converters 100, and inverter is recalculated using new variable X
Response time, when HMI monitoring systems 300 are in separated in time（In the present embodiment, the time interval is 2s）Send out again afterwards
After the instruction for going out to obtain sequence number, according to the new inverter response time, the photovoltaic inversion that transmission sequence number fails before this 3
Device will transmit sequence number to HMI monitoring systems 300 again.The like, to the Successful transmissions sequence number of HMI monitoring systems 300
Photovoltaic DC-to-AC converter 100 will gradually increase, and when the quantity of the photovoltaic DC-to-AC converter with same response time T is 0, then illustrate
HMI monitoring systems 300 have been received by the sequence number of all photovoltaic DC-to-AC converters 100.
In described S4, specifically comprise the steps of：
S41, HMI monitoring system 300 is stored the sequence number of all photovoltaic DC-to-AC converters 100 received；
S42, transmitted to the sequencing of HMI monitoring systems 300 according to the sequence number of each photovoltaic DC-to-AC converter 100, HMI prisons
Control system 300 is followed successively by each photovoltaic DC-to-AC converter 100 distribution address, i.e. sequence number more first according to the incremental principle in distribution address
The address being assigned to is transmitted to the photovoltaic DC-to-AC converter 100 of HMI monitoring systems 300 smaller, sequence number transmits to HMI to monitor more afterwards is
The address that the photovoltaic DC-to-AC converter 100 of system 300 is assigned to is bigger；And HMI monitoring systems 300 will preserve maximum address information；
S43, each photovoltaic DC-to-AC converter receive and parse through out the address distributed by HMI monitoring systems 300 respectively, and as schemed
Shown in 3, confirmation is sent to HMI monitoring systems 300.
Further, due to that in communication process of the HMI monitoring systems 300 with each photovoltaic DC-to-AC converter 100, may exist
Some photovoltaic DC-to-AC converters because interference or other factors and caused by communication disruption, cause into the distribution of work address be deleted；
Further, since extended meeting is continuously increased new photovoltaic DC-to-AC converter after grid-connected system, these photovoltaic DC-to-AC converters newly increased are also needed
Address is distributed for it.Based on above-mentioned, the method for the automatic distribution address of many series connection of photovoltaic DC-to-AC converter provided by the present invention, go back
Comprising：S6, HMI monitoring system 300 repeats to send the finger for obtaining sequence number at a certain time interval to photovoltaic DC-to-AC converter 100
Order, for causing the deleted photovoltaic DC-to-AC converter in address, or the photovoltaic DC-to-AC converter newly increased because of communication disruption, according to S3
~S4 distributes new address for it；And for successfully distributing the photovoltaic DC-to-AC converter of address, then no longer mutually should obtain sequence
Number instruction.
In another preferred embodiment of the invention, described grid-connected system is altogether by the photovoltaic inversion of 27 series connection
Device 100, HMI monitoring systems 300 and other photovoltaic modulies are constituted.Wherein, described photovoltaic DC-to-AC converter 100 uses model
DSP2812 inverter is realized, and power output is 3.2k or 5.4k.HMI monitoring systems 300 send the finger re-registered first
Order, the address of all photovoltaic DC-to-AC converter 100 is by clear 0；Secondly HMI monitoring systems 300 obtain the instruction of sequence number, when each light
Inverter 100 is lied prostrate after the instruction is received, when the inverter response time obtained according to calculating carries out waiting until response
Between arrive, each photovoltaic DC-to-AC converter 100 transmits corresponding sequence number to HMI monitoring systems 300 respectively；HMI monitoring systems 300 afterwards
The sequencing reached according to sequence number, distributes address, respectively according to the incremental principle in address to each photovoltaic DC-to-AC converter 100 successively
Individual photovoltaic DC-to-AC converter 100 receives and preserved the address being assigned to and sends confirmation to HMI monitoring systems 300；Last HMI
Monitoring system 300 sends the instruction of parameter query to each photovoltaic DC-to-AC converter 100, and each photovoltaic DC-to-AC converter 100 will according to agreement
Ask to transmit respective associated parameter data to HMI monitoring systems 300 and shown, to be monitored and safeguard.
In summary, the method for the automatic distribution address of many series connection of photovoltaic DC-to-AC converter that the present invention is provided, tight by formulating
The communication protocol of lattice, increase obtains the instruction of inverter sequence number on the basis of original communication protocol, and HMI monitoring systems will be into
Work(is that all photovoltaic DC-to-AC converters distribute address, it is necessary to first obtain the sequence number of inverter, and each photovoltaic DC-to-AC converter is monitored to HMI
System needs to calculate the suitable inverter response time when transmitting sequence number, to avoid plurality of photovoltaic DC-to-AC converter from passing simultaneously
Transmission of data causes bus to block and fail.
The method of the automatic distribution address of many series connection of the photovoltaic DC-to-AC converter that the present invention is provided, HMI monitoring systems are according to above-mentioned
Communication protocol, successively transmitted according to sequence number to the order of HMI monitoring systems, successively according to the incremental principle in address to each
Photovoltaic DC-to-AC converter 100 distributes address automatically.
The method of the automatic distribution address of many series connection of the photovoltaic DC-to-AC converter that the present invention is provided, it is strict and perfect by definition
Communication protocol, to realize that the address of photovoltaic DC-to-AC converter is distributed automatically, without artificial participation, the mistake for reducing human factor and causing
By mistake, distribution reliability, stability and accuracy are effectively increased；Also save manpower and time cost simultaneously so that communication effect
Rate is greatly improved, so as to realize the monitoring and maintenance to grid-connected system.
Although present disclosure is discussed in detail by above preferred embodiment, but it should be appreciated that above-mentioned
Description is not considered as limitation of the present invention.After those skilled in the art have read the above, for the present invention's
A variety of modifications and substitutions all will be apparent.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (8)
1. a kind of method of the automatic distribution address of many series connection of photovoltaic DC-to-AC converter, it is characterised in that suitable for many photovoltaic inversions
The grid-connected system of device series connection；The method includes the steps of：
S1, by many series connection photovoltaic DC-to-AC converters be connected by converter with man-machine interface monitoring system；
S2, man-machine interface monitoring system send the instruction re-registered to all photovoltaic DC-to-AC converters, by all photovoltaic DC-to-AC converters
It is revised as 0 in address；
S3, man-machine interface monitoring system send the instruction for obtaining sequence number, every photovoltaic DC-to-AC converter root to all photovoltaic DC-to-AC converters
The obtained inverter response time is calculated according to by respective sequence number, is staggered the time respectively to the respective correspondence of man-machine interface monitoring system transmission
Sequence number；
S4, the sequence number transmitted according to all photovoltaic DC-to-AC converters sequencing, man-machine interface monitoring system are incremented by according to address
Principle is that corresponding photovoltaic DC-to-AC converter distributes address automatically；
S5, each photovoltaic DC-to-AC converter set up communication connection between man-machine interface monitoring system respectively, are receiving man-machine interface
After the parameter query instruction that monitoring system is sent, respective related data is transmitted to man-machine interface monitoring system and shown,
So that each photovoltaic DC-to-AC converter is monitored and safeguarded.
2. the method for the automatic distribution address of many series connection of photovoltaic DC-to-AC converter as claimed in claim 1, it is characterised in that described
In S1, converter turns RS485/422 converter using USB；
Connected between described man-machine interface monitoring interface and converter using USB communication interfaces；
Used between the photovoltaic DC-to-AC converter of many described series connection and between photovoltaic DC-to-AC converter and converter using common netting twine
RS485/422 communication interface connection.
3. the method for the automatic distribution address of many series connection of photovoltaic DC-to-AC converter as claimed in claim 1, it is characterised in that described
In S2, man-machine interface monitoring system repeatedly sends the instruction re-registered to all photovoltaic DC-to-AC converters, it is ensured that all light
Volt inverter can modify the addressed into 0.
4. the method for the automatic distribution address of many series connection of photovoltaic DC-to-AC converter as claimed in claim 3, it is characterised in that described
Man-machine interface monitoring system is repeated 3 times the instruction for sending and re-registering to all photovoltaic DC-to-AC converters.
5. the method for the automatic distribution address of many series connection of photovoltaic DC-to-AC converter as claimed in claim 1, it is characterised in that described
In S3, specifically comprise the steps of：
S31, every photovoltaic DC-to-AC converter calculate respective inverter response time T respectively, and calculation formula is：T=X%32+1, wherein,
The initial value of variable X is the sequence number of each photovoltaic DC-to-AC converter, and % represents complementation；
S32, man-machine interface monitoring system send the instruction for obtaining sequence number to all photovoltaic DC-to-AC converters；Every photovoltaic DC-to-AC converter
After the instruction for obtaining sequence number is received, the inverter response time obtained respectively according to being calculated in S31 is waited until
Response time is arrived, then its corresponding sequence number is transferred to man-machine interface monitoring system by corresponding photovoltaic DC-to-AC converter；
S33, man-machine interface monitoring system judge whether to receive the sequence number that all photovoltaic DC-to-AC converters are replied；In this way, then continue
Perform S4；If not, continuing executing with S34；
S34, the photovoltaic DC-to-AC converter for transmitting sequence number to man-machine interface monitoring system for not yet succeeding, recalculate its corresponding
Inverter response time T, calculation formula is：X’=X/32；T= X’%32+1；
S35, after certain time interval, man-machine interface monitoring system send again obtain sequence number instruction；Now,
The photovoltaic DC-to-AC converter for transmitting sequence number to man-machine interface monitoring system that not yet succeeds can be obtained according to being recalculated in S34 respectively
The progress of inverter response time waits until that the response time arrives, then corresponding photovoltaic DC-to-AC converter transmits its corresponding sequence number
Give man-machine interface monitoring system；And return to execution S33.
6. the method for the automatic distribution address of many series connection of photovoltaic DC-to-AC converter as claimed in claim 5, it is characterised in that described
In S35, man-machine interface monitoring system sends the instruction for once obtaining sequence number at interval of 2s to photovoltaic DC-to-AC converter.
7. the method for the automatic distribution address of many series connection of photovoltaic DC-to-AC converter as claimed in claim 1, it is characterised in that described
In S4, specifically comprise the steps of：
S41, man-machine interface monitoring system are stored the sequence number of all photovoltaic DC-to-AC converters received；
S42, transmitted to the sequencing of man-machine interface monitoring system according to the sequence number of each photovoltaic DC-to-AC converter, man-machine interface prison
Control system according to the incremental principle in distribution address, be followed successively by each photovoltaic DC-to-AC converter distribution address, i.e. sequence number more first transmit to
The address that the photovoltaic DC-to-AC converter of man-machine interface monitoring system is assigned to is smaller, and sequence number is transmitted to man-machine interface monitoring system more afterwards
The address that is assigned to of photovoltaic DC-to-AC converter it is bigger；And man-machine interface monitoring system will preserve maximum address information；
S43, each photovoltaic DC-to-AC converter receive and parse through out the address distributed by man-machine interface monitoring system respectively, then to man-machine
Interface monitoring system sends confirmation.
8. the method for the automatic distribution address of many series connection of photovoltaic DC-to-AC converter as claimed in claim 1, it is characterised in that also wrap
Contain：S6, man-machine interface monitoring system repeat to send the instruction for obtaining sequence number at a certain time interval to photovoltaic DC-to-AC converter, right
In causing the deleted photovoltaic DC-to-AC converter in address, or the photovoltaic DC-to-AC converter newly increased because of communication disruption, according to S3~S4
New address is distributed for it；And for successfully distributing the photovoltaic DC-to-AC converter of address, then no longer mutually should obtain sequence number
Instruction.
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| CN110417793A (en) * | 2019-08-05 | 2019-11-05 | 无锡质胜新能源科技有限公司 | For the communication system and its method of inverter |
| CN112702432B (en) * | 2020-12-24 | 2022-08-26 | 重庆鼎泰精维科技有限公司 | Automatic network building method for photovoltaic module array |
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| EP1284556A1 (en) * | 2001-08-17 | 2003-02-19 | Saia-Burgess Murten AG | A method for initializing a control system and a control system |
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| DE102005034944B3 (en) * | 2005-07-22 | 2006-11-09 | Siemens Ag | Field bus system e.g. LIN bus system, configuration method for use in e.g. motor vehicle, involves checking whether bus subscriber still has standard address, and identifying subscriber and assigning clear subscriber address to subscriber |
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