CN105490388A - Wireless intelligent monitoring system and method for photovoltaic power station - Google Patents
Wireless intelligent monitoring system and method for photovoltaic power station Download PDFInfo
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- 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
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Abstract
The invention discloses a wireless intelligent monitoring system and method for a photovoltaic power station. The wireless intelligent monitoring system for the photovoltaic power station comprises a server layer, a gateway layer, a repeater layer and a monitoring module layer, wherein the server layer is the top layer; the monitoring module layer is the bottom layer; bidirectional communication is performed between each two adjacent layers; the server layer consists of multiple servers; the gateway layer consists of multiple gateways; the repeater layer consists of multiple repeater modules; the wireless intelligent monitoring system is characterized in that the monitoring module layer consists of a1-am grouping sequences, wherein m is less than or equal to 65536; each grouping sequence is divided into b1-bm groups, wherein n is a natural number less than or equal to 255; each group consists of i intelligent monitoring modules, wherein i is a natural number less than or equal to 183; each repeater performs wireless communication with all the intelligent monitoring modules in each grouping sequence; the repeaters and the gateways are in wireless communication; and the intelligent monitoring modules are used for detecting information of photovoltaic modules, and perform wireless communication with the repeaters. According to the wireless intelligent monitoring system and method for the photovoltaic power station, the electric energy utilization rate of the photovoltaic power station can be improved, and the wireless intelligent monitoring system and method are wide in application prospects.
Description
Technical field
The present invention relates to intelligent monitor system and method, be specifically related to photovoltaic plant wireless intelligent monitoring system and method.
Background technology
Because solar energy power generating has noiseless, pollution-free, do not have region to limit, widely distributed and inexhaustible feature, therefore solar energy power generating is a kind of renewable energy power generation technology with sustainable development.It is predicted, solar energy power generating can occupy the important seat of world energy sources consumption in 21 century, not only wants Substitute For Partial conventional energy resource, and will become the main body of world energy supplies.But solar photovoltaic power plant floor space is wide, photovoltaic module substantial amounts, and conventional photovoltaic assembly junction box does not possess warning and measuring ability, and current supervisory control system also can only detect header box, cannot monitor single component and detect.The maintenance of photovoltaic module and monitoring difficulty, therefore for improve the energy output of photovoltaic plant, fail safe, quick position photovoltaic power station component fault component level intelligent monitor system be the new direction of photovoltaic plant intelligent monitor system development.
Existing component level monitoring adopts the intelligent monitored control module of power line carrier, PLC to form.The monitor data information of module need by power line transmission, and each photovoltaic string needs a data acquisition unit, and the data that data acquisition unit is collected are transferred to server by on-scene communication circuit (RS485) again.It is serious to there is 1. heating in this technical scheme: Schottky diode during by-pass switch, and when photovoltaic module is blocked, when Schottky diode is in bypass condition, the temperature of terminal box reaches more than 150 DEG C; 2. fail safe is low: Schottky diode is reverse withstand voltagely easily to be varied with temperature, and oppositely withstand voltage during high temperature only have twenty or thirty to lie prostrate very easily to be reversed and puncture, and except this, do not possess pass function, when fire etc. is unexpected occur time to there is high pressure difficult in maintenance.3. loss is large: the reverse leakage current of Schottky diode at high temperature reaches more than 10 milliamperes, and energy loss is large.4. communication reliability is low: data information transfer need by power line, and when power line breaks down, the data of whole photovoltaic string all will be lost, and communication efficiency is easily subject to the impact of wiring load.5. cost is high: each group string needs a data sink, needs to lay communication line specially between data sink and server.6. code check is low, and power line carrier communication code check generally only has a few Kbps.
The intelligent monitored control module that the employing WIFI communication that existing photovoltaic module monitoring also has possesses monitoring function is formed.Be hung on terminal box outside monitoring module, the data of monitoring module are transmitted by wifi.Tens wifi nodes need a corresponding data acquisition unit, and data acquisition unit adopts live cable communication line to control centre.This technical scheme cost is high, and data acquisition unit quantity is many, and volume is large, and monitoring module needs the defects such as plug-in, power consumption is high, agreement is complicated.
Summary of the invention
Technical problem to be solved by this invention is to provide photovoltaic plant wireless intelligent monitoring system and method.
First technical scheme of the present invention is: photovoltaic plant wireless intelligent monitoring system, comprises server layer, gateway layer, repeater layer and monitoring module layer, and server layer is top layer, and monitoring module layer is bottom, all carries out two-way communication between adjacent layer; Server layer is made up of some servers; Gateway layer is made up of some gateways; Repeater layer is made up of some trunk modules;
Be characterized in: monitoring module layer is made up of a1 ~ am packet sequence, m≤65536; I.e. packet sequence number≤65536; Each packet sequence is divided into b1 ~ bn grouping, the natural number of n≤255; I.e. packet number≤255; Each grouping is made up of i intelligent monitored control module; The natural number of i≤183, i.e. sequence number≤183 in grouping; The corresponding repeater of each packet sequence, corresponding at most 255 repeaters of each gateway; All intelligent monitored control modules in each repeater and same packet sequence carry out radio communication; Radio communication is carried out between repeater and gateway; Each gateway carries out radio communication with 255 repeaters at most;
Intelligent monitored control module, for detecting the information of photovoltaic module, comprises voltage, electric current, temperature etc., carries out radio communication with repeater, and turn off photovoltaic module voltage according to instruction and export, bypass can not export the photovoltaic module of electricity;
Each intelligent monitored control module possesses independently No. ID, to distinguish with other monitoring modules; Intelligent monitored control module completes photovoltaic module data acquisition, comprise voltage detecting, temperature detection, current detecting, judge current photovoltaic module operating state voluntarily, initiative alarming when need report to the police, repeater is uploaded data to by designated frequency band time-division slot, and receive the downlink data of repeater, perform the instruction of repeater;
After the data summarization that intelligent monitored control module is sent by repeater, packing is transmitted to gateway; And the packing of the downlink data of gateway is transmitted to intelligent monitored control module;
After the data summarization that repeater is uploaded by gateway, packing is transmitted to server; And the instruction sent by server is transmitted to repeater.
In photovoltaic plant wireless intelligent monitoring system, repeater and intelligent monitored control module network-building method, be characterized in: comprise the steps:
Step 1. intelligent monitored control module is in initial condition, and in packet sequence number, packet number, grouping, sequence number is sky;
Step 2, the first time number of robbing networking request: intelligent monitored control module receives the networking commands that repeater sends under non-Packet State, obtain the packet sequence number of distributing, and by sequence number in the total number packets stochastic generation packet number of specifying and grouping, wherein, total number packets is the total number packets amount in each packet sequence, and total number packets is less than or equal to 255; Packet number is less than or equal to total number packets, and in grouping, sequence number is less than or equal to 183; In grouping, sequence number is the response timeslot number of specifying;
Step 3, the first round number of robbing poll confirm: repeater sends packet sequence number and designated packet number confirms the intelligent monitored control module number of robbing poll, and redistributes sequence number in grouping to the monitoring module of having replied; When packet sequence number and designated packet that intelligent monitored control module receives are number identical with packet number with the packet sequence number that step 2 obtains respectively, acknowledgement command should be returned to repeater by time slot by appointment; By the ID passback repeater of photovoltaic module;
Step 4, first round system configuration return sequence: repeater sends and returns sequence order, produce sequence number in new packet sequence number, new packet number and new grouping, sequence number in new packet sequence number, new packet number and new grouping is reconfigured to the intelligent monitored control module that the number of robbing confirms; Intelligent monitored control module should upload sequence number in new packet number and new grouping by time slot by appointment, carries out passback and confirms to upgrade; Wherein, new packet number and the interior sequence number of new grouping are all often confirm an intelligent monitored control module from 1, and in new grouping, sequence number increases progressively 1, and when in newly grouping, sequence number is incremented to 183, new packet number adds 1, and in new grouping, sequence number increases progressively again from 1;
Step 5. judge all groupings whether all poll confirmed, if do not complete, increase designated packet number, return step 3; If all complete, enter step 6;
Step 6. second takes turns the number of robbing networking request: repeater is assigned and recalculated sequence number order in packet number and grouping when not changing packet sequence number; Non-completion system configuration returns the intelligent monitored control module of sequence to regain sequence number in packet number and grouping; And to press in the grouping that regains sequence number by photovoltaic module ID passback repeater;
Step 7. second is taken turns the number of robbing poll and is confirmed: repeater transmission designated packet number is carried out second to intelligent monitored control module and taken turns the confirmation of the number of robbing poll; When non-completion system configure the designated packet of returning the intelligent monitored control module of sequence to receive number identical with the packet number that step 6 obtains time, in the grouping obtained by step 6, sequence number returns acknowledgement command to repeater; By the ID passback repeater of photovoltaic module;
Step 8, the second wheel system configuration return sequence: repeater sends and returns sequence order, produces new packet sequence number, sequence number in new packet number and newly grouping; Repeater reconfigures sequence number in new packet sequence number, new packet number and new grouping to the intelligent monitored control module that second takes turns the number of robbing confirmation; Intelligent monitored control module uploads sequence number in new packet number and new grouping at agreement response time slot, carries out passback and confirms to upgrade; Wherein, new packet number and the interior sequence number of new grouping are on original numerical value basis, and often confirm an intelligent monitored control module, in new grouping, sequence number increases progressively 1, and when in newly grouping, sequence number is incremented to 183, new packet number adds 1, and in new grouping, sequence number increases progressively again from 1;
Step 9. judges whether all groupings have all been carried out second and taken turns the confirmation of the number of robbing poll, if there is grouping not carry out, increases designated packet number, return step 7; If all groupings all complete, enter step 10;
Step 10, repetition step 6 ~ 9, when non-completion system configuration returns the quantity of the intelligent monitored control module of sequence to be zero, stop iteration, terminate.
The beneficial effect of photovoltaic plant wireless intelligent monitoring system of the present invention and method is: the application characteristic that the present invention is directed to photovoltaic module enormous amount, adopt frequency-division section, sub-channel, time-division slot, the wireless networking communications protocol of packet number, propose assembly, relaying, gateway, three level communication schemes between server, quantity is large, low in energy consumption, the photovoltaic module that the low and cost of code check is low and quantity few, code check is high, the relaying of distance, gateway and server carry out performance, the optimum combination of the aspects such as cost, by less communication instruction, realization periodically can gather each photovoltaic module data and warning message, whole three level communication system frameworks are flexible, can carry out flexible topology by photovoltaic plant different scales, different terrain, transfer of data of the present invention all adopts communication, have and install when simple and convenient, operation maintenance safety, abnormal conditions occur and can turn off, the features such as the operating state of Real-Time Monitoring assembly, abnormal conditions initiative alarming, reverse leakage current are low, can export by remote shutdown photovoltaic module electric energy when a failure occurs, the successful exploitation of native system can improve the utilance of photovoltaic plant electric energy, quick position faulty components, increases the investment repayment of photovoltaic plant, for the maintenance in power station is provided convenience, has a good application prospect.
Accompanying drawing explanation
Fig. 1 is photovoltaic plant wireless intelligent monitoring system theory diagram of the present invention.
Fig. 2, Fig. 3 are intelligent monitored control module networking program flow diagrams.
Fig. 4 to Fig. 7 is repeater networking program flow diagram.
Embodiment
See Fig. 1, photovoltaic plant wireless intelligent monitoring system, comprises server layer, gateway layer, repeater layer and monitoring module layer, and server layer is top layer, and monitoring module layer is bottom, all carries out two-way communication between adjacent layer;
Server layer is made up of some servers 14; Gateway layer is made up of some gateways 13; Repeater layer is made up of some repeaters 12; Monitoring module layer is made up of a1 ~ am packet sequence, m≤65536; I.e. packet sequence number≤65536; Each packet sequence is divided into b1 ~ bn grouping, the natural number of n≤255; I.e. packet number≤255; Each grouping is made up of i intelligent monitored control module 11; The natural number of i≤183, i.e. sequence number≤183 in grouping; The corresponding repeater of each packet sequence, corresponding at most 255 repeaters 12 of each gateway; Each repeater 12 adopts 2.4GHz frequency range to carry out radio communication with all intelligent monitored control modules 11 in same packet sequence; Adjacent packets sequence need adopt different channels from repeater communication; 433MHz frequency range is adopted to carry out radio communication between repeater 12 and gateway 13; Each gateway carries out radio communication with 255 repeaters at most, and different gateway adopts different communication frequencys respectively.
Intelligent monitored control module 11, for detecting the information of photovoltaic module 10, comprises voltage, electric current, temperature etc., carries out radio communication with repeater, and turn off photovoltaic module voltage according to instruction and export, bypass can not export the photovoltaic module of electricity;
Each intelligent monitored control module 11 possesses 6 bytes independently No. ID, to distinguish with other monitoring modules; Intelligent monitored control module 11 completes photovoltaic module 10 data acquisition, comprise voltage detecting, temperature detection, current detecting etc., judge current photovoltaic module operating state voluntarily, initiative alarming when need report to the police, repeater 12 is uploaded data to by specifying 2.4Gz frequency range time-division slot, and receive the downlink data of repeater 12, comprise networking instruction, running parameter etc., and carry out associative operation by the instruction received, comprise and turn off the output of photovoltaic module voltage according to instruction, bypass can not export the photovoltaic module of electricity, and carries out working mode change etc.;
The relaying that repeater 12 completes the 2.4G frequency communication being greater than 50 meters and 433 frequency communication being greater than 1 kilometer is changed, and after the data summarization that intelligent monitored control module 11 is sent by repeater 12, packing is transmitted to gateway 13; And the packing of the downlink data of gateway 13 is transmitted to intelligent monitored control module 11; Communication distance between repeater 12 and intelligent monitored control module 11 is greater than 50 meters, is greater than 1 kilometer with the communication distance of gateway;
Gateway 13 completes the conversion of 433 frequency range time slot communications and TCP/IP Internet Server; Gateway can by after about 255 data summarization that repeater is uploaded, and packing is transmitted to server; And the instruction sent by server is transmitted to repeater.By the Internet TCP/IP, can support multiple gateway simultaneously with strange land server communication.
By server interface, server 14 can provide data, services to photovoltaic plant Central Control Room, power station general headquarters, expert system, third-party monitoring etc.
In a particular embodiment, system 4 level communications protocol is described in table 1 below.
Table 1 system 4 level communications protocol is sketched
Intelligent monitored control module related data information is by being described in table 2 below.
Table 2 intelligent monitored control module data table related
The selection of repeater executive system communication channel.Comprise:
One, the communication background noise level of each channel of repeater periodic analysis home environment.The optimum channel of Dynamic Selection;
Two, to networking intelligent monitored control module, original channel adopt instruction to notify, overall switching channels after 1 second.
Three, to non-networking intelligent monitored control module, instruction is adopted to notify by channel scanning mode.It is 0 and 83 two channel that the broadcast communication channel of System Priority is fixed tentatively.
L1 communication has long period, short period two kinds of communication modes: the long period communication mode and one the one short period communication mode received that comprise multicast.Wherein:
The long period communication mode of multicast adopts the half duplex communication mode of periodically " order broadcast+selective acknowledgment "." order time slot " and " selective acknowledgment time slot " is all defined as 5ms, and transmitting-receiving translation and protection time rule is 40ms.Periodic communication time rule was 1 second, initiatively communication is initiated by repeater, accurately, periodically send " order time slot " to double as system time service, terminal box receives " order broadcast ", and time slot opens as per second moment of beginning, and opens also as each communication the moment of beginning.L1 is per second carries out a half duplex communication, often sends out a broadcasting command, can receive at most the return data of 183 group members.
One the one short period communication mode system received implicit employing long period communication mode.First short period communication sent in " moment second " of system time, made the terminal box in same packets carry out short period communication mode simultaneously, accelerated system configuration speed.Last short period communication mode will send out a conversion instruction, makes the terminal box in same packets return to long period communication mode simultaneously.
Short period communication time was defined as 0.1 second, faster than long period communication speed 10 times.Still adopt the half duplex communication mode of aperiodic " order broadcast+selective acknowledgment ".L1 is per second carries out a half duplex communication, often sends out a broadcasting command, can receive at most the return data of 3 mandatory members or 1 group member 3 times.
L1 communications protocol time slot system is made up of sequence number in packet sequence number, packet number, grouping, and consideration will take into account large-scale power station networking needs, and its span is as table 3.
Table 3 command frame field list
By upper table span, a repeater can manage at most 255*183=46665 assembly, calculates about 18MW by each assembly 250W, and 65535 repeaters can manage 1180GW, can meet the regulatory requirement in any super-huge power station.
After system group network configuration, can the related data of photovoltaic module ID of Quick Acquisition appointment order and information, and system common data comprise current ideal voltage value, current ideal voltage value, Current Temperatures alarm threshold value etc.Data acquisition flow is: if the order of grouping passback current data assigned by repeater, comprise repeater and specify passback packet number, return current all data, after terminal box receives this order, judgement is when belonging to this packet number, uploads current all data, comprise at agreement response time slot; Current voltage value, present current value, current temperature value, current state value and Current Temperatures alarm threshold value etc.; If repeater is assigned specify passback packet number, during the order of passback No. D, current I, when terminal box judges to belong to this packet number, upload No. ID, current terminal box or No. ID, assembly at agreement response time slot; If when repeater is assigned and is carried out setting command by command code to current system data, terminal box is arranged current system data by order, comprise sequence number in packet sequence number, packet number, grouping, Current Temperatures alarm threshold value, current ideal voltage value and current desired current level etc., and current system data are returned.
By carrying out record to the time started of each grouping and batch image data of repeater, an acquisition time and the batch capture data binding often organized can be realized, have compressed the memory space of record acquisition time.
See Fig. 2 to Fig. 7, in photovoltaic plant wireless intelligent monitoring system, repeater and intelligent monitored control module network-building method, comprise the steps:
Step 1. intelligent monitored control module is in initial condition, and in packet sequence number M1, packet number M4, grouping, sequence number M5 is sky;
Step 2, the first time number of robbing networking request: intelligent monitored control module receives the networking commands that repeater sends under non-Packet State, obtain the packet sequence number M1 distributed, and by sequence number M5 in the total number packets M2 stochastic generation packet number M4 specified and grouping, wherein, total number packets M2 is the total number packets amount of each packet sequence, and total number packets M2 is less than or equal to 255; Packet number M4 is less than or equal to total number packets M2, and in grouping, sequence number M5 is less than or equal to 183; In grouping, sequence number is the response timeslot number of specifying;
Step 3, the first round number of robbing poll confirm: repeater 12 sends packet sequence number and designated packet number confirms the intelligent monitored control module number of robbing poll, and redistributes timeslot number to the intelligent monitored control module of having replied; When packet sequence number and designated packet that intelligent monitored control module receives are number identical with packet number M4 with the packet sequence number M1 that step 2 obtains respectively, return acknowledgement command by the interior sequence number M5 of grouping to repeater; By the ID passback repeater of photovoltaic module; After repeater receives the acknowledgement command of intelligent monitored control module, by sequence number M5 in the packet sequence number M1 of corresponding intelligent monitored control module, packet number M4 and grouping stored in buffer memory, and increase progressively 1 to adding up the counter A1 having replied intelligent monitored control module;
Step 4, first round system configuration return sequence: repeater 12 sends and returns sequence order, produce sequence number M5 ' in new packet sequence number M1 ', new packet number M4 ' and new grouping, sequence number M5 ' in new packet sequence number M1 ', new packet number M4 ' and new grouping is reconfigured to the intelligent monitored control module that the number of robbing confirms; Intelligent monitored control module uploads sequence number M5 ' in new packet number M4 ' and new grouping by sequence number M5 in grouping, carries out passback and confirms to upgrade;
In a particular embodiment, when each new packet number M4 ' carries out that first time, system configuration returned sequence, in new grouping, sequence number M5 ' is from 1;
Step 4.1: repeater 12 judges whether the acknowledgement command receiving intelligent monitored control module, as do not received acknowledgement command, enters step 4.2; Does in new grouping, sequence number M5 ' increase progressively 1, then judges that M5 ' is greater than 183 as received acknowledgement command? as M5 ' is greater than 183,1 is increased progressively to new packet number M4 ', and M5 ' is put 1, enter step 4.2; As M5 ' is less than 183, enter step 4.2;
Step 4.2 successively decreases 1 to the counter A1 that statistics has replied intelligent monitored control module;
Step 4.3 judges to add up whether the counter A1 having replied intelligent monitored control module is 0; If being not 0, return step 4; As being 0,1 is increased progressively to designated packet M6;
Step 5. judge all groupings whether all poll confirmed, namely judge whether M6 is greater than total number packets M2, if M6 is less than M2, namely do not complete, return step 3; If all complete, enter step 6;
Step 6. second takes turns the number of robbing networking request: repeater is assigned and recalculated sequence number order in packet number and grouping when not changing packet sequence number; Non-completion system configuration returns the intelligent monitored control module of sequence to regain sequence number in packet number and grouping; And to press in the grouping that regains sequence number by photovoltaic module ID passback repeater; After repeater receives the acknowledgement command of intelligent monitored control module, by sequence number M5 in the packet sequence number M1 of corresponding intelligent monitored control module, packet number M4 and grouping stored in buffer memory, and increase progressively 1 to adding up the counter A1 having replied intelligent monitored control module;
Step 7. second is taken turns the number of robbing poll and is confirmed: repeater transmission designated packet number is carried out second to intelligent monitored control module and taken turns the confirmation of the number of robbing poll; When non-completion system configure the designated packet of returning the intelligent monitored control module of sequence to receive number identical with the packet number that step 6 obtains time, in the grouping obtained by step 6, sequence number returns acknowledgement command to repeater; By the ID passback repeater of photovoltaic module;
Step 8, the second wheel system configuration return sequence: repeater sends and returns sequence order, produces new packet sequence number, sequence number in new packet number and newly grouping; Repeater reconfigures sequence number in new packet sequence number, new packet number and new grouping to the intelligent monitored control module that second takes turns the number of robbing confirmation; Intelligent monitored control module uploads sequence number in new packet number and new grouping at agreement response time slot, carries out passback and confirms to upgrade;
In a particular embodiment, when each new packet number carries out that first time, system configuration returned sequence, in new grouping, sequence number is all from 1;
Step 8.1: repeater 12 judges whether the acknowledgement command receiving intelligent monitored control module, as do not received acknowledgement command, enters step 8.2; Does as received acknowledgement command, in new grouping, sequence number increase progressively 1, then judges to be greater than 183? as newly divided into groups, interior sequence number is greater than 183, increases progressively 1 to new packet number, and interior sequence number of newly dividing into groups is put 1, enters step 8.2; As newly divided into groups, interior sequence number is less than 183, enters step 8.2;
Step 8.2 successively decreases 1 to the counter A1 that statistics has replied intelligent monitored control module;
Step 8.3 judges to add up whether the counter A1 having replied intelligent monitored control module is 0; If being not 0, return step 8; As being 0,1 is increased progressively to designated packet M6;
Step 9. judges whether all groupings have all been carried out second and taken turns the confirmation of the number of robbing poll, namely judge whether M6 is greater than total number packets M2, if M6 is less than M2, namely do not complete, return step 7; If all groupings all complete, enter step 10;
Step 10, repetition step 6 ~ 9, when non-completion system configuration returns the quantity of the intelligent monitored control module of sequence to be zero, stop iteration, terminate.
In a particular embodiment, each Field Definition that each command frame is detailed is as described in Table 4.
Table 4
Intelligent wiring box carries out long period rapid communication in groups by sequence number in packet sequence number, grouping, grouping.By networking flow process and system configuration, Intelligent wiring box obtain specify packet sequence number, grouping, in grouping after sequence number, just can carry out L1 communication.
For reducing number of collisions, total number packets M2 has just started general larger.Carry out after system passback confirmation through 0x20,0x21 instruction, and 0x22,0x23 instruction of sequence number is carried out after system returns sequenceization to adjust in packet sequence number, grouping and grouping, the quantity of unsuccessful networking can be fewer and feweri, can realize whole networking after successive ignition.
Repeater can the instruction of reception server, upgrades packet sequence number at any time.
The definition data block of order 0x20: the number of robbing that the assembly of designated packet sequence number carries out sequence number in designated packet sequence number, designated packet, designated packet is calculated and uploads instruction by command code.Concrete regulation is as table 5.
Table 5
The definition data block of order 0x21: time consistent with response time slot by sequence number in designated packet sequence number, designated packet, designated packet, passback No. ID, assembly.Concrete regulation is as table 6.
Table 6
The definition data block of order 0x22: system call interception has confirmed sequence number in the new packet sequence number of No. ID, assembly, new packet number, new grouping, realizes the Gui Xuhua without vacancy, improves reading efficiency.Make No. ID, assembly in former packet sequence number reduce gradually simultaneously, reduce conflict situations when grouping calculates again and occur.Concrete regulation is as table 7.
Table 7
The definition data block of order 0x23: this instruction is short period instruction, corresponding 0x22 instruction, once can adjust No. ID, 1 assembly.And be the rear data of No. ID, this assembly amendment at the 1st response time slot, the 2nd, the 3rd response time slot is empty." new packet sequence number " default to be thought and successfully revises.
Concrete regulation is as table 8.
Table 8
Above the specific embodiment of the present invention is described, but, the scope being not limited only to embodiment of the present invention's protection.
Claims (2)
1. photovoltaic plant wireless intelligent monitoring system, comprises server layer, gateway layer, repeater layer and monitoring module layer, and server layer is top layer, and monitoring module layer is bottom, all carries out two-way communication between adjacent layer; Server layer is made up of some servers; Gateway layer is made up of some gateways; Repeater layer is made up of some trunk modules;
It is characterized in that: monitoring module layer is made up of a1 ~ am packet sequence, m≤65536; Each packet sequence is divided into b1 ~ bn grouping, the natural number of n≤255; Each grouping is made up of i intelligent monitored control module; The natural number of i≤183, all intelligent monitored control modules in each repeater and same packet sequence carry out radio communication; Radio communication is carried out between repeater and gateway;
Intelligent monitored control module, for detecting the information of photovoltaic module, carries out radio communication with repeater, and turn off photovoltaic module voltage according to instruction and export, bypass can not export the photovoltaic module of electricity;
Each intelligent monitored control module possesses independently No. ID, to distinguish with other monitoring modules; Intelligent monitored control module completes photovoltaic module data acquisition, comprise voltage detecting, temperature detection, current detecting, judge current photovoltaic module operating state voluntarily, initiative alarming when need report to the police, repeater is uploaded data to by designated frequency band time-division slot, and receive the downlink data of repeater, perform the instruction of repeater;
After the data summarization that intelligent monitored control module is sent by repeater, packing is transmitted to gateway; And the packing of the downlink data of gateway is transmitted to intelligent monitored control module;
After the data summarization that repeater is uploaded by gateway, packing is transmitted to server; And the instruction sent by server is transmitted to repeater.
2. repeater and intelligent monitored control module network-building method in photovoltaic plant wireless intelligent monitoring system, is characterized in that: comprise the steps:
Step 1. intelligent monitored control module is in initial condition, and in packet sequence number, packet number, grouping, sequence number is sky;
Step 2, the first time number of robbing networking request: intelligent monitored control module receives the networking commands that repeater sends under non-Packet State, obtain the packet sequence number of distributing, and by sequence number in the total number packets stochastic generation packet number of specifying and grouping, wherein, total number packets is the total number packets amount of each packet sequence, and total number packets is less than or equal to 255; Packet number is less than or equal to total number packets, and in grouping, sequence number is less than or equal to 183;
Step 3, the first round number of robbing poll confirm: repeater sends packet sequence number and designated packet number confirms the intelligent monitored control module number of robbing poll, and redistributes time slot to the monitoring module of having replied; When packet sequence number and designated packet that intelligent monitored control module receives are number identical with packet number with the packet sequence number that step 2 obtains respectively, reply time slot by appointment and return acknowledgement command to repeater;
Step 4, first round system configuration return sequence: repeater sends and returns sequence order, produce sequence number in new packet sequence number, new packet number and new grouping, sequence number in new packet sequence number, new packet number and new grouping is reconfigured to the intelligent monitored control module that the number of robbing confirms; Intelligent monitored control module uploads sequence number in new packet number and new grouping by appointment response time slot, carries out passback and confirms to upgrade;
Step 5. judge all groupings whether all poll confirmed, if do not complete, increase designated packet number, return step 3; If all complete, enter step 6;
Step 6. second takes turns the number of robbing networking request: repeater is assigned and recalculated sequence number order in packet number and grouping when not changing packet sequence number; Non-completion system configuration returns the intelligent monitored control module of sequence to regain sequence number in packet number and grouping; And press the response time slot that regains by photovoltaic module ID passback repeater;
Step 7. second is taken turns the number of robbing poll and is confirmed: repeater transmission designated packet number is carried out second to intelligent monitored control module and taken turns the confirmation of the number of robbing poll, when non-completion system configure the designated packet of returning the intelligent monitored control module of sequence to receive number identical with the packet number that step 6 obtains time, in the grouping obtained by step 6, sequence number returns acknowledgement command to repeater;
Step 8, the second wheel system configuration return sequence: repeater sends and returns sequence order, produce sequence number in new packet sequence number, new packet number and new grouping, sequence number in new packet sequence number, new packet number and new grouping is reconfigured to the second intelligent monitored control module of taking turns the number of robbing confirmation; Intelligent monitored control module uploads sequence number in new packet number and new grouping at agreement response time slot, carries out passback and confirms to upgrade;
Step 9. judges whether all groupings have all been carried out second and taken turns the confirmation of the number of robbing poll, if there is grouping not carry out, increases designated packet number, return step 7; If all groupings all complete, enter step 10;
Step 10, repetition step 6 ~ 9, when non-completion system configuration returns the quantity of the intelligent monitored control module of sequence to be zero, stop iteration, terminate.
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