CN105897306B - The combined communications system and its composite communication mode of Miniature inverter based on PLC/ZigBee - Google Patents
The combined communications system and its composite communication mode of Miniature inverter based on PLC/ZigBee Download PDFInfo
- Publication number
- CN105897306B CN105897306B CN201610335277.9A CN201610335277A CN105897306B CN 105897306 B CN105897306 B CN 105897306B CN 201610335277 A CN201610335277 A CN 201610335277A CN 105897306 B CN105897306 B CN 105897306B
- Authority
- CN
- China
- Prior art keywords
- power line
- communication
- miniature inverter
- line carrier
- module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000004891 communication Methods 0.000 title claims abstract description 157
- 239000002131 composite material Substances 0.000 title claims description 13
- 238000000034 method Methods 0.000 claims description 11
- 238000012544 monitoring process Methods 0.000 claims description 10
- 230000001174 ascending effect Effects 0.000 claims description 6
- 230000007812 deficiency Effects 0.000 abstract description 2
- 241001269238 Data Species 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 11
- 230000005540 biological transmission Effects 0.000 description 8
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 230000005611 electricity Effects 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 206010033799 Paralysis Diseases 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000006855 networking Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000002350 accommodative effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000009885 systemic effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
- H02J13/00007—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using the power network as support for the transmission
-
- H02J13/0075—
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
-
- 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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
-
- 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/121—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using the power network as support for the transmission
-
- 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
The invention discloses a kind of combined communications system and its communication means of PLC/ZigBee Miniature inverter, including a host computer, a concentrator and n micro- inverse unit；N micro- inverse any i-th micro- inverse units of unit include：One Miniature inverter, a radio communication ZigBee module, a power line carrier PLC module；Mainly communicated using power line carrier PLC Communication Layers, and ZigBee radio communication is used as supervisory layers, it is responsible for being monitored power line carrier communication PLC communication data, if both communication datas have bigger difference, it have to be off power line carrier PLC communication, while ZigBee radio communication adapter power line carrier plc communications.The present invention can solve deficiency and shortcoming that the single communication mode of traditional Miniature inverter is brought, ensure the real-time normal work of Miniature inverter, so as to improve the operating efficiency of system, stability, reliability and serious forgiveness.
Description
Technical field
It is specifically a kind of miniature inverse based on PLC/ZigBee the present invention relates to a kind of communication technology of Miniature inverter
Become the combined communications system and its composite communication mode of device.
Background technology
In the last few years, as the high speed development of society, people increasingly pay attention to the efficiency and security of the energy, and can
Renewable sources of energy photovoltaic grid-connected inversion technology is increasingly becoming the focus of research.Miniature solar photovoltaic inverter being capable of fine land productivity
With renewable energy solar energy, solar energy is switched to electric energy.This technology needs DC-DC DC voltage booster circuits to produce photovoltaic panel
DC voltage Vpv (28V~44V) rise (reaching as high as 400V).Among these in order to improve the utilization ratio of solar energy, use
MPPT (MPPT maximum power point tracking) technology.This just needs the input voltage Vpv and input current of collection Miniature inverter in real time
Ipv.And pass through DC-AC single-phase full bridge inverter circuits after boosting, DC power conversion into alternating current 220V.Alternating current
When 220V is connected to the grid, it is ensured that the electric voltage frequency of the inversion output of Miniature inverter is consistent with phase and bulk power grid.And
The collection of these data needs to ensure real-time and reliability with communication.
The communication mode of current photovoltaic Miniature inverter is relatively simple, typically using wire communication method
Power line carrier plc communication, or wireless communications method ZigBee technology.What power line carrier PLC was utilized is existing power line
Communicated, eliminate wire communication again architecture network the problem of, it is cost-effective with regard to data can be transmitted as long as live wire, and
And easy to use, plug and play, connect with the mains and just connect to the Net.But there are the problem of unstable, family expenses in power line communication PLC
Electromagnetic wave caused by electrical equipment produces interference to communication, some unpredictable mistakes can occur often, and have signal attenuation
Problem, this may cause Miniature inverter because communication delay or communication mistake cause operating efficiency low or even damage is micro-
Type inverter, and then cause Miniature inverter not work.
And radio communication ZigBee technology small volume, performance are strong, environment-adapting ability is strong, is suitable for working out of doors, in real time
Communication efficiency is high, and stability is good.But single ZigBee technology lacks most of reliability, ZigBee module and uses lithium battery
Power supply, this causes needs timing to change battery, therefore is not suitable for ZigBee and works long hours in communications status, another aspect
The ability for penetrating barrier of ZigBee signals is poor, is easily blocked by barriers such as walls.And in order to improve
The reliability of data transfer, it is necessary to ensured by increasing routing node, and then add cost.
Zhang Linglan of TI companies etc. describes integrated power line carrier communication function (PLC) photovoltaic inversion based on C2000
System.By being connected in Miniature inverter system by means of communication such as SPI/SCI with power line carrier PLC module, and
, can be real the data transfer of Miniature inverter system to external network by the use of existing power line network as communication media
Existing Distant supervision and control.But this single communication technology has a drawback, lack very high reliability and real-time, one
Denier power line carrier PLC module breaks down or damage, communication are just interrupted, and causes the paralysis of Miniature inverter, just can not be normal
Work.
Xue Jiaxiang of South China Science ＆ Engineering University etc. describes a kind of monitoring system of micro- inverter based on radio sensing network
(South China Science ＆ Engineering University's paper, 2014, " monitoring system of micro- inverter based on radio sensing network ").It is wireless by ZigBee
Network communication module is received and dispatched to some signals of the Miniature inverter of collection, and real by hand-held mobile terminal display device
When monitor Miniature inverter data, coordinate host computer realize Intellectualized monitoring and control.But this technology is not good
Reliability, once ZigBee wireless network communication modules, which have damage or communication mistake be present, this may result in whole Miniature inverter
Systemic breakdown even damages.
The content of the invention
The present invention is to avoid the weak point present in above-mentioned prior art, there is provided a kind of based on the micro- of PLC/ZigBee
The combined communications system and its composite communication mode of type inverter, to solve the single communication mode of traditional Miniature inverter
The deficiency and shortcoming brought, ensure the real-time normal work of Miniature inverter, so as to improve the efficiency of system, stability and can
By property.
Above-mentioned to solve the problems, such as, the technical solution adopted by the present invention is：
A kind of the characteristics of combined communications system of Miniature inverter based on PLC/ZigBee of the present invention, is included on one
Position machine, a concentrator and n micro- inverse units；The n micro- inverse any i-th micro- inverse units of unit include：I-th miniature inverse
Become device, i-th of power line carrier PLC module, i-th of radio communication ZigBee module；
I-th of Miniature inverter is supported on power line respectively with i-th of power line carrier PLC module respectively；
The host computer is communicated with n i-th of Miniature inverters respectively by n radio communication ZigBee module；
I-th of Miniature inverter is communicated by SPI with i-th of power line carrier PLC module, and passes through serial ports
Communicated with i-th of radio communication ZigBee module；
The concentrator is communicated by netting twine with the host computer, and passes through power line and n i-th of miniature inversions
Device is communicated；Using the concentrator as host node device, set using the n power line carrier PLC module as from node
It is standby；
It is described to be divided into m groups according to the ascending order apart from size with the concentrator from node device；1st group passes through power line
Direct communication is carried out with the concentrator；Jth group is carried out after being transferred to the 1st group successively by preceding j groups respectively with the concentrator
Indirect communication；
When the Monitoring Data that i-th of radio communication ZigBee module is transmitted and i-th of power line carrier PLC module
When the communication data transmitted is consistent, the host computer utilizes i-th of power line carrier PLC module and i-th of Miniature inverter
Communicated；Otherwise host computer is communicated using i-th of radio communication ZigBee module with i-th of Miniature inverter.
A kind of the characteristics of composite communication method of Miniature inverter based on PLC/ZigBee of the present invention, is applied to by one
In the combined communications system that individual host computer, a concentrator and n micro- inverse unit are formed；The n micro- inverse units any i-th
Individual micro- inverse unit includes：I-th of Miniature inverter, i-th of radio communication ZigBee module, i-th of power line carrier PLC mould
Block；The composite communication method is to carry out as follows：
Step 1, the n power line carrier PLC module is divided into m according to the ascending order apart from size with the concentrator
Group；1st group is closest group, and m groups are apart from farthest group；Include S in jth groupjIndividual power line carrier PLC moulds
Block；1≤j≤m；
Step 2, the 1st group pass through power line and the concentrator and carry out direct communication；Jth group respectively by preceding j groups successively
After being transferred to the 1st group indirect communication is carried out with the concentrator；
The communication data that step 3, the host computer are transmitted according to i-th of power line carrier PLC module, judge
I Miniature inverter whether normal work, if normally, performing step 4；Otherwise, host computer reports an error i-th of Miniature inverter；
Step 4, the host computer receive the Monitoring Data that i-th of radio communication ZigBee module is transmitted, and divide
Not compared with the communication data that i-th corresponding of power line carrier PLC module is transmitted, if both data are consistent,
The host computer is communicated using i-th of power line carrier PLC module with i-th of Miniature inverter；Otherwise, the host computer
The communication with i-th of power line carrier PLC module is disconnected, and communication data is divided according to importance, then utilizes i-th
Individual radio communication ZigBee module is communicated with i-th of Miniature inverter.
The characteristics of composite communication method of the present invention, is lain also in, and the importance of the step 4 is divided into：
The DC bus-bar voltage and electric current of Miniature inverter>The input direct voltage and electric current of Miniature inverter>It is miniature inverse
Become the prime boosting PWM duty cycle of device>Miniature inverter ac output voltage and electric current>Miniature inverter rear class inversion PWM is accounted for
Empty ratio>The frequency of power network>Miniature inverter temperature.
Compared with prior art, the beneficial effects of the present invention are：
1st, the combined communications system for the PLC/ZigBee that the present invention passes through the Miniature inverter of construction and using PLC/
Zigbee composite communication mode, it ensure that the mistake that Miniature inverter will not occur because of some power line carrier plc communication
And cause this Miniature inverter to be paralysed, improve the stability of Miniature inverter system, reliability and real-time and serious forgiveness.
2nd, the present invention by using power line carrier PLC, pass through existing power line, without building network again, reduce
Cost, high-speed transfer is carried out by carrier communication mode, ensure that the real-time and reliability of information.
3rd, the present invention by using ZigBee communications, due to ZigBee small volume, accommodative ability of environment
By force, reliability of the information in transmission is improved.
4th, the present invention solves electric power by using power line carrier PLC primary and secondary structure and the frame mode of packet
The problem of line carrier communication scope is short, communication range can be expanded, so as to increase of Miniature inverter unit in whole system
Number, improve the efficiency and reliability of power line carrier PLC remote control.
5th, the present invention is classified by the data to Miniature inverter by importance, the high number of prioritised transmission importance
According to ensure that normal work of the Miniature inverter when PLC disconnects, improve the operating efficiency of whole system.
Brief description of the drawings
Fig. 1 is combined communications system structure chart of the present invention；
Fig. 2 is power line carrier plc communication structure chart of the present invention；
Fig. 3 is power line carrier plc communication fundamental diagram of the present invention；
Fig. 4 is present system communication monitoring flow chart.
Embodiment
In the present embodiment, a kind of combined communications system of the Miniature inverter based on PLC/ZigBee, as shown in Figure 1：Bag
Include a host computer, a concentrator and n micro- inverse unit；N micro- inverse any i-th micro- inverse units of unit include：I-th micro-
Type inverter, i-th of radio communication ZigBee module, i-th of power line carrier PLC module.
I-th of Miniature inverter is supported on power line respectively with i-th of power line carrier PLC module respectively；I-th micro-
Type inverter is communicated by SPI with i-th of power line carrier PLC module.Power line carrier PLC module mainly includes concentrating
Device, it is used for managing multiple power line carrier PLC terminal nodes and as between host computer and power line carrier PLC terminal nodes
Communication bridge.
Concentrator is communicated by netting twine with host computer, and is communicated by power line with n Miniature inverter.With
Concentrator is as host node device, using n power line carrier PLC module as from node device.
It is divided into m groups from node device according to the ascending order apart from size with concentrator；1st group passes through power line and concentrator
Carry out direct communication；Jth group be transferred to the 1st group successively by preceding j groups respectively after with concentrator carry out indirect communication.
In power line carrier group-net communication, concentrator contains carrier wave transmission, carried using AFE031 carrier chips as core
Ripple receives and linear coupling three parts circuit.When concentrator is started working, Power Line Carrier Communication Module is just by concentrator institute
All terminal nodes within the specific limits form a complete communication network.Electricity is sent to when concentrator receives host computer
During the order of line of force carrier wave PLC terminal nodes, power line carrier plc communication module passes through transmission electricity just by being instructed
Road is transmitted to the power line carrier PLC terminal nodes on power line；When power line carrier PLC terminal nodes need to send out to host computer
Deliver letters breath when, power line carrier plc communication module is sent to host computer by receiving circuit receive information, and by serial ports.In carrier wave
Information will be modulated demodulation to information when sending and receiving by linear coupling circuit.When sending information, linear coupling
Circuit is closed to be transmitted high frequency carrier information feeding power line；When receive information, termination power is from electric power line drawing high frequency
Information and then demodulation, termination power prevent 50Hz power frequency components in power line from flowing into, play a part of isolation simultaneously.
Host computer is communicated with n i-th of Miniature inverters respectively by n radio communication ZigBee module；
ZigBee wireless communication modules mainly include ZigBee radio frequency chips CC2530 and wireless transceiver circuit, and pass through serial ports and i-th
Individual radio communication ZigBee module is communicated.
When the Monitoring Data that i-th of radio communication ZigBee module is transmitted and i-th of power line carrier PLC module are passed
When defeated communication data is consistent, host computer is communicated using i-th of power line carrier PLC module with i-th of Miniature inverter；
Otherwise host computer is communicated using i-th of radio communication ZigBee module with i-th of Miniature inverter.Radio communication ZigBee
It is main to be responsible for being observed the data of power line carrier plc communication as the supervisory layers of whole Miniature inverter.In some electricity
When line of force carrier wave PLC communication makes a mistake, mistake can be found by the unique address very first time of each Miniature inverter
Particular location and maintenance, while just take over power line that this makes a mistake at this moment with the ZigBee radio communications of position and carry
Ripple plc communication module.
A kind of composite communication method of the Miniature inverter based on PLC/ZigBee, it is applied to by one in the present embodiment
In the combined communications system that individual host computer, a concentrator and n micro- inverse unit are formed；Any i-th of the micro- inverse units of n are micro-
Inverse unit includes：I-th of Miniature inverter, i-th of radio communication ZigBee module, i-th of power line carrier PLC module；It is micro-
Sample detecting circuit on type inverter module is carried out to the voltage on Miniature inverter and on power network, electric current, frequency and phase
Gather and nurse one's health, and the data storage of collection in the dsp chip of master controller, data of the dsp chip by SPI collection
Power line carrier PLC module is transmitted to, power line carrier PLC again sends out data by power line after ovennodulation data are received
Deliver to concentrator, the receiving circuit in concentrator module is demodulated the high-frequency signal on power line and is sent to host computer.
Similarly, when host computer sends commands to inverter, it is necessary to the transtation mission circuit of concentrator signal modulation into high-frequency signal again
PLC module is transmitted to by power line, and then is transmitted to the master controller dsp chip of Miniature inverter module.Workflow diagram such as Fig. 4
It is shown.
Specifically, as shown in figure 4, composite communication method is to carry out as follows：
Step 1, in order to expand power line carrier PLC communication range, by n power line carrier PLC module according to
It is divided into m groups with the ascending order apart from size of concentrator；1st group is closest group, and m groups are apart from farthest group；It is each
Include S in group jth groupjIndividual power line carrier PLC module；1≤j≤m；
Step 2, the 1st group pass through power line and concentrator and carry out direct communication；Jth group is transmitted successively by preceding j groups respectively
After to the 1st group indirect communication is carried out with concentrator.As shown in Figure 2：This is a primary and secondary structure, and concentrator is as plc communication
A host node, be whole power line carrier plc communication network-based control center, be responsible for all power line carrier PLC
Terminal node.When the scope of whole power line carrier plc communication network is little, all power line carrier PLC terminals in Fig. 2
The status of node is all identical (A groups, B groups, the no any difference of C groups), and all power line carrier PLC terminal nodes are with concentrating
Device is all direct communication.But power line carrier PLC communication distance is limited.As Fig. 2, such as all power lines are carried
Ripple PLC terminal nodes can be divided into A groups (1~node L of PLC nodes), B groups (PLC nodes L+1 by the how far apart from concentrator
~node M), C groups (+1~node N of PLC node Ms), and more groups, each group of PLC nodes are not necessarily identical.Wherein
A groups are nearest apart from concentrator, and C groups are farthest.Due to the limitation of power line carrier plc communication distance, concentrator be merely able to in A groups
All power line carrier PLC terminal nodes carry out direct communication, and can not and two groups of B, C any one power line carrier
PLC terminal nodes carry out direct communication, so now just needing to be classified power line carrier PLC terminal nodes.The end of A groups
End node is just used as the first communication stage, and row data communication can be directly entered with concentrator, and B groups just need as the second communication stage
Row data communication could be entered with concentrator by the first communication stage, C groups just need to utilize the as third communication level by that analogy
One and the second two communication stages could enter row data communication with concentrator, that is, C groups PLC terminal nodes just and B groups PLC
Terminal node is communicated, and then the terminal node of B groups is communicated with the PLC terminal nodes of A groups, is finally led to concentrator
Letter, so assigns A, the terminal node of B groups as via node, realizes that C groups communicate with the data of concentrator.Specific power line carries
Ripple plc communication principle is as shown in Figure 3：The data that concentrator (host node) is sent need to be sent to transmission by data communication interface
The signal processing module of circuit, the microprocessor in transtation mission circuit, which receives, needs data to be sent, and the data of transmission are entered
Row processing, it is encoded, after modulation, it is sent to by power line coupling circuit on power line.Receiving circuit passes through power line coupling
Close interface circuit and receive the modulated signal that sends over, and by demodulating the data message sent after, be sent to microprocessor
Device is analyzed and processed, then is passed to from node communication equipment.Similarly, from node also with similar method to concentrator
(host node) transmits data.
The communication data that step 3, host computer are transmitted according to i-th of power line carrier PLC module, judge i-th it is miniature
Inverter whether normal work, if normally, perform step 4；Otherwise, host computer reports an error i-th of Miniature inverter, notifies user
Check, fix a breakdown；
Step 4, host computer receive the Monitoring Data transmitted of i-th of radio communication ZigBee module, and respectively with pair
The communication data that i-th of the power line carrier PLC module answered is transmitted is compared, if both data are consistent, host computer profit
Communicated with i-th of power line carrier PLC module with i-th of Miniature inverter；Otherwise, host computer disconnects and i-th of electric power
The communication of line carrier wave PLC module, and communication data is divided according to importance, then utilize i-th of radio communication
ZigBee module is communicated with i-th of Miniature inverter, i.e. i-th of radio communication ZigBee module is now micro- as i-th
The Communication Layer of type inverter system.
In specific implementation, radio communication ZigBee module needs building network, and step is as follows：The first step, netinit
And node initializing, scan channel and check that network whether there is；Second step, host node Configuration network, produce telegon network
Node, it is initially configured network；3rd step, networked from node, terminal node application adds coordinator node or routing node.Each
Inverter module is connected with ZigBee module forms a RFD device node, and the device node adds the specific mistake of network
Journey is as follows：RFD device nodes are after upper electric hardware initialization, and by delay, searching for interior whether there is of its node communication range can
With the network of addition, if so, then the device node selects a host node and sent according to current all network informations simultaneously
One request that networks, then wait the request of host node to respond, host node judges after the request that networks is received according to solicited message
Whether allow RFD device nodes, if host node allows to add, send request and respond to RFD device nodes, RFD device nodes
After the networking request response of host node transmission is received, host node will be obtained and distribute to its network address as should
The unique identifier of RFD device nodes in a network, so far then the RFD equipment has been successfully joined network；If host node does not allow
The RFD device nodes add or RFD device nodes do not find the network that can be added, then are continued search for after waiting delay,
Untill finding the network that can be added and addition.After the completion of ZigBee networkings, it can both start to communicate, dsp chip handle is adopted
The information of collection is transmitted to ZigBee terminal node by serial ports, and ZigBee terminal node carries itself ground by radio frequency chip handle
The data of location are sent to ZigBee host nodes, and ZigBee host nodes are sending data to host computer.Similarly, host computer sends life
When making to Miniature inverter, ordered if only needing to send some Miniature inverter, host node passes through the point-to-point transmission in address
Information, order if desired is sent to all Miniature inverters, then host node sends information in the form of broadcasting.It is any in network
Node can receive the order that host node is sent.
When i-th of Miniature inverter is communicated using i-th of radio communication ZigBee module, it is necessary to according to importance
Communication data is divided, it is as follows by the height descending division of importance：The DC bus-bar voltage and electric current of Miniature inverter>
The input direct voltage and electric current of Miniature inverter>The prime boosting PWM duty cycle of Miniature inverter>Miniature inverter exchange is defeated
Go out voltage and current>Miniature inverter rear class inversion PWM duty cycle>The frequency of power network>Miniature inverter temperature etc..Miniature inversion
The middle bridge for the front stage that the DC bus-bar voltage and electric current of device work as Miniature inverter, is connected to DC-DC and DC-AC
Two parts circuit, is the main condition of whole Miniature inverter normal work, and certain importance is also highest；Miniature inverter
Input direct voltage and electric current be both preceding stage DC-DC booster circuit key data, and MPPT (MPPT maximum power point tracking)
Two data necessary to technology；The prime boosting PWM duty cycle of Miniature inverter, this data relationship prime switching tube
The loss of the conversion efficiency and switching tube of ON time and prime；Miniature inverter ac output voltage and electric current, it is whole
Miniature inverter rear class is capable of the premise of steady operation, and these data are also used for judging that mistake (deficient) voltage of Miniature inverter is protected
Shield；Miniature inverter rear class inversion PWM duty cycle, this data relationship the ON time of rear class switching tube and turning for rear class
Change efficiency, the loss of switching tube；The frequency of power network can make the output voltage and frequency and synchronized of Miniature inverter；It is miniature
The temperature of inverter can understand the operating temperature situation of reflection Miniature inverter in time.
Claims (3)
- A kind of 1. combined communications system of the Miniature inverter based on power line carrier PLC/ZigBee, it is characterized in that including one Host computer, a concentrator and n micro- inverse unit；The n micro- inverse any i-th micro- inverse units of unit include：I-th miniature Inverter, i-th of power line carrier PLC module, i-th of radio communication ZigBee module；I-th of Miniature inverter is supported on power line respectively with i-th of power line carrier PLC module respectively；The host computer is communicated with n Miniature inverter respectively by n radio communication ZigBee module；I-th of Miniature inverter is communicated by SPI with i-th of power line carrier PLC module, and passes through serial ports and I radio communication ZigBee module is communicated；The concentrator is communicated by netting twine with the host computer, and is led to by power line and n Miniature inverter Letter；Using the concentrator as host node device, using the n power line carrier PLC module as from node device；It is described to be divided into m groups according to the ascending order apart from size with the concentrator from node device；1st group passes through power line and institute State concentrator and carry out direct communication；Jth group be transferred to the 1st group successively by the j-1 groups before jth group respectively after with the concentration Device carries out indirect communication；When the Monitoring Data that i-th of radio communication ZigBee module is transmitted and i-th of power line carrier PLC module are passed When defeated communication data is consistent, the host computer is carried out using i-th of power line carrier PLC module and i-th of Miniature inverter Communication；Otherwise host computer is communicated using i-th of radio communication ZigBee module with i-th of Miniature inverter.
- 2. a kind of composite communication method of the Miniature inverter based on power line carrier PLC/ZigBee, it is characterized in that applied to by In the combined communications system that one host computer, a concentrator and n micro- inverse unit are formed；The n micro- inverse units are any I-th of micro- inverse unit includes：I-th of Miniature inverter, i-th of radio communication ZigBee module, i-th of power line carrier PLC Module；The composite communication method is to carry out as follows：Step 1, the n power line carrier PLC module is divided into m groups according to the ascending order apart from size with the concentrator； 1st group is closest group, and m groups are apart from farthest group；Include S in jth groupjIndividual power line carrier PLC module；1 ≤j≤m；Step 2, the 1st group pass through power line and the concentrator and carry out direct communication；Jth group passes through the j-1 before jth group respectively Organize and carry out indirect communication with the concentrator after being transferred to the 1st group successively；The communication data that step 3, the host computer are transmitted according to i-th of power line carrier PLC module, judges i-th Miniature inverter whether normal work, if normally, perform step 4；Otherwise, host computer reports an error i-th of Miniature inverter；Step 4, the host computer receive the Monitoring Data that i-th of radio communication ZigBee module is transmitted, and with pair The communication data that i-th of the power line carrier PLC module answered is transmitted is compared, described upper if both data are consistent Machine is communicated using i-th of power line carrier PLC module with i-th of Miniature inverter；Otherwise, the host computer disconnects and the The communication of i power line carrier PLC module, and communication data is divided according to importance, then utilize i-th of channel radio Letter ZigBee module is communicated with i-th of Miniature inverter.
- 3. composite communication method according to claim 2, it is characterized in that：The importance of the step 4 is divided into：The DC bus-bar voltage and electric current of Miniature inverter>The input direct voltage and electric current of Miniature inverter>Miniature inverter Prime boosting PWM duty cycle>Miniature inverter ac output voltage and electric current>Miniature inverter rear class inversion PWM duty cycle> The frequency of power network>Miniature inverter temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610335277.9A CN105897306B (en) | 2016-05-19 | 2016-05-19 | The combined communications system and its composite communication mode of Miniature inverter based on PLC/ZigBee |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610335277.9A CN105897306B (en) | 2016-05-19 | 2016-05-19 | The combined communications system and its composite communication mode of Miniature inverter based on PLC/ZigBee |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105897306A CN105897306A (en) | 2016-08-24 |
| CN105897306B true CN105897306B (en) | 2018-02-13 |
Family
ID=56716550
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610335277.9A Active CN105897306B (en) | 2016-05-19 | 2016-05-19 | The combined communications system and its composite communication mode of Miniature inverter based on PLC/ZigBee |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105897306B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106504493B (en) * | 2016-11-04 | 2022-05-10 | 珠海国勘仪器有限公司 | Distributed cable data transmission system for electrical prospecting |
| CN112147560A (en) * | 2019-06-26 | 2020-12-29 | 浙江共同电子科技有限公司 | Simple carrier module detection method based on inversion technology and split-phase detection technology |
| CN110572184B (en) | 2019-08-02 | 2021-03-05 | 华为技术有限公司 | Power generation system and communication device for power generation system |
| CN116896164A (en) * | 2023-07-17 | 2023-10-17 | 恩沃新能源科技(上海)有限公司 | Communication system and communication method of micro inverter |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3099769B2 (en) * | 1997-03-24 | 2000-10-16 | トヨタ自動車株式会社 | Power output device and control method thereof |
| JP3003631B2 (en) * | 1997-06-23 | 2000-01-31 | 日本電気株式会社 | Nonvolatile semiconductor memory device |
| CN201839445U (en) * | 2009-05-27 | 2011-05-18 | 郑贵林 | Wireless municipal meter remote data acquisition system based on ZigBee networking |
| CN103248399A (en) * | 2012-02-08 | 2013-08-14 | 台达电子工业股份有限公司 | Power line communication method and power line communication system |
| CN102937987B (en) * | 2012-10-26 | 2016-03-16 | 浙江昱能科技有限公司 | The method of the Centralized Controller inquiry inverter in distributed multiple inverter system |
| CN102946670B (en) * | 2012-11-12 | 2015-06-10 | 华中科技大学 | Multifunctional mining LED (Light Emitting Diode) road lamp system based on Zigbee and power line carrier |
-
2016
- 2016-05-19 CN CN201610335277.9A patent/CN105897306B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN105897306A (en) | 2016-08-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106058844B (en) | A kind of multiport energy router for direct-current micro-grid | |
| CN105897306B (en) | The combined communications system and its composite communication mode of Miniature inverter based on PLC/ZigBee | |
| CN107681697A (en) | Store up the energy router topology device and control method of lotus optimum management in source | |
| CN103500496B (en) | Electric power data multi-way communication system and multi-way centralized meter reading system | |
| Zhang et al. | Architecture of solid state transformer-based energy router and models of energy traffic | |
| CN102810909B (en) | Energy management method capable of matching distributed power sources with loads | |
| CN103606943A (en) | Microgrid nickel-metal hydride battery energy storage system | |
| CN103986182A (en) | Photovoltaic grid connected system based on power line carrier communication | |
| CN109728838A (en) | Platform area identifying system and recognition methods based on broadband power line carrier and power frequency communication | |
| CN209250634U (en) | Platform area identifying system based on broadband power line carrier and power frequency communication | |
| CN102780267B (en) | Electric energy router | |
| CN103915856B (en) | A kind of base station is grid-connected-charging photovoltaic micro-inverter system and control method thereof | |
| CN105305496B (en) | The isolated form photovoltaic combining inverter and its method of work of a kind of pair of branch structure | |
| CN109888774A (en) | A kind of Optimal Scheduling and method of Internet of Things energy router | |
| CN104410106A (en) | Photovoltaic inverter, inverter system and communication networking method for inverter system | |
| CN109193610A (en) | A kind of shutdown control system and method | |
| CN201821130U (en) | Solar photovoltaic generating controller | |
| WO2017128787A1 (en) | Household photovoltaic system and smart micro-grid system | |
| CN106684852A (en) | Flexible DC grid voltage management center and voltage stability control method thereof | |
| CN107134914A (en) | A kind of self-organizing electric energy router applied to low-voltage distribution terminal | |
| CN103560539A (en) | In-grid and off-grid mixed type direct-current-to-alternating-current system and starting method of inverters thereof | |
| CN206149266U (en) | Power line carrier communication system based on micro inverter | |
| CN203787968U (en) | Microgrid nickel-hydrogen battery energy storage system | |
| CN205160095U (en) | Isolated form photovoltaic grid -connected inverter of two branch road structures | |
| CN116341183A (en) | Alternating current/direct current power distribution network optimization design method and system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |