CN110138844A - A kind of micro- monitoring inverter system and method for distributed photovoltaic power generation - Google Patents
A kind of micro- monitoring inverter system and method for distributed photovoltaic power generation Download PDFInfo
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- CN110138844A CN110138844A CN201910331610.2A CN201910331610A CN110138844A CN 110138844 A CN110138844 A CN 110138844A CN 201910331610 A CN201910331610 A CN 201910331610A CN 110138844 A CN110138844 A CN 110138844A
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- 238000010248 power generation Methods 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000004891 communication Methods 0.000 claims abstract description 160
- 238000001514 detection method Methods 0.000 claims abstract description 18
- 238000012360 testing method Methods 0.000 claims abstract description 11
- 230000005611 electricity Effects 0.000 claims description 6
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- 238000005516 engineering process Methods 0.000 abstract description 5
- 238000011897 real-time detection Methods 0.000 abstract description 2
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- 238000006243 chemical reaction Methods 0.000 description 2
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- 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
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- H02J13/0075—
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0061—Error detection codes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
- H04L67/125—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks involving control of end-device applications over a network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/14—Session management
- H04L67/143—Termination or inactivation of sessions, e.g. event-controlled end of session
- H04L67/145—Termination or inactivation of sessions, e.g. event-controlled end of session avoiding end of session, e.g. keep-alive, heartbeats, resumption message or wake-up for inactive or interrupted session
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/56—Provisioning of proxy services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/06—Notations for structuring of protocol data, e.g. abstract syntax notation one [ASN.1]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/22—Parsing or analysis of headers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
- H04W4/029—Location-based management or tracking services
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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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
- 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
Abstract
The invention discloses a kind of micro- monitoring inverter system and methods of distributed photovoltaic power generation, the system includes ZigBee communication network, GPRS communication network, communications gateway module, cloud mqtt proxy server and monitoring APP, the detection data of multiple photovoltaic micro-inverters is transferred to communications gateway module by ZigBee communication network, communications gateway module will test data and be parsed and be packaged, the location information of GPRS communication network acquisition distributed photovoltaic power generation system, GPRS communication network uses mqtt agreement, detection data after location information and parsing are packaged is transferred to cloud mqtt proxy server, cloud mqtt proxy server customizes theme using mqtt agreement, data are sent to monitoring APP, it monitors APP and shows cloud mqtt proxy server The detection data of forwarding.The present invention uses ZigBee, GPRS and cloud computing technology, and operating status, power grid real-time parameter, micro-capacitance sensor generated energy and the system failure information of the micro- inverter of real-time detection photovoltaic power generation micro-system reach monitoring photovoltaic generating system purpose whenever and wherever possible.
Description
Technical field
The invention belongs to photovoltaic power generation detection technique field, in particular to a kind of micro- monitoring inverter of distributed photovoltaic power generation
System and method.
Background technique
Since photovoltaic power generation micro-capacitance sensor is typically located at outdoor, family photovoltaic micro is typically mounted at roof or sky
Spacious place, and be mostly at present local monitor to the monitoring of micro-capacitance sensor, communication distance is limited, and the photovoltaic of photovoltaic power generation micro-capacitance sensor
There is also larger distances between electrification component and photovoltaic DC-to-AC converter, and local monitor communication mode wiring distance is long, at high cost, and
Be easy to appear and communicate bad situation, when daily maintenance can only periodical inspection equipment, record related data, cost of labor caused to increase
Add, user cannot grasp equipment operation information in time, and maintenance personal cannot receive fault message in time, be unable to reach whenever and wherever possible
Monitor the purpose of photovoltaic generating system.
Summary of the invention
In order to overcome shortcoming and deficiency of the existing technology, the present invention provides a kind of micro- inverter of distributed photovoltaic power generation
Monitoring system and method, using technologies such as ZigBee, GPRS, cloud computings, the micro- inverter of real-time detection photovoltaic power generation micro-system
Operating status, power grid real-time parameter, statistics micro-capacitance sensor generated energy, timely supplying system failure, facilitates user to grasp in time and sets
Received shipment row information and maintenance personal debug in time, reach monitoring photovoltaic generating system purpose whenever and wherever possible.
In order to achieve the above object, the invention adopts the following technical scheme:
The present invention provides a kind of micro- monitoring inverter system of distributed photovoltaic power generation, comprising: ZigBee communication network, GPRS
Communication network, communications gateway module, cloud mqtt proxy server and monitoring APP；
The ZigBee communication network is used to the detection data of multiple photovoltaic micro-inverters being transferred to communications gateway module,
The communications gateway module will test data and be parsed and be packaged, and the GPRS communication network is for obtaining distributed photovoltaic hair
The location information of electric system, the GPRS communication network use mqtt agreement, and location information and communications gateway module parsing are beaten
Detection data after packet is transferred to cloud mqtt proxy server, and the cloud mqtt proxy server is customized using mqtt agreement
Theme sends detection data to monitoring APP, and the monitoring APP shows the detection data of cloud mqtt proxy server forwarding.
The communications gateway module includes gateway governor circuit module, ZigBee communication electricity as a preferred technical solution,
Road module, GPRS communication circuit module, program debugging circuit module, eeprom circuit module and power-supplying circuit module；
The detection data of photovoltaic micro-inverter is transmitted to gateway governor circuit module by the ZigBee communication circuit module,
Gateway governor circuit module will test data and reach cloud mqtt proxy server by GPRS communication circuit module；
Described program debug circuit module carries out program debugging for gateway governor circuit module and host computer, described
Eeprom circuit module is equipped with the storage chip extended out by SPI communication agreement, for storing number of failures it is believed that breath, described
Power-supplying circuit module converts voltage to the operating voltage of each chip in communications gateway module by decompression and rectification,
Each chip is individually powered.
The gateway governor circuit module is equipped with gateway main control chip, the gateway master control as a preferred technical solution,
Chip uses STMF32F103C8T6 chip, external 8MHz, 32.76KHz crystal oscillator, and the programming program by the way of ISP, described
Gateway main control chip is set there are three USART serial ports, respectively GPRS communication interface, ZigBee communication interface and SPI protocol channel
Interface.
The GPRS communication circuit module uses SIM800C module as a preferred technical solution, SIM800C module
RXD, TXD pin are connected with TXD, RXD pin of gateway governor circuit module respectively.
The ZigBee communication circuit module uses ZM5168 module, ZM5168 module as a preferred technical solution,
TXD, RXD pin are connected with TXD, RXD pin of gateway governor circuit module respectively, LINK pin and gateway governor circuit module
I/O pin be connected.
The cloud mqtt proxy server disposes linux system open port as a preferred technical solution, pacifies simultaneously
Fill Java context, Ecclipse, Mosquitto and MySQL software.
The monitoring APP is provided with the detailed boundary of operation main interface, real-time running data as a preferred technical solution,
Face, failure interface and historical data interface.
The present invention also provides a kind of micro- monitoring inverter methods of distributed photovoltaic power generation, include the following steps:
ZigBee communication network configuration is stelliform connection topology configuration, and the ZigBee communication network module of communications gateway module is matched
It is set to main module, configures the ZigBee communication network module of micro- inverter to from module；
Gateway governor circuit module is initialized；
After the completion of initialization, gateway governor circuit module sends communication request to the ZigBee communication circuit module postponed
Instruction, while gateway governor circuit module sends positioning instruction to GPRS communication network, and the location data of return is parsed
Obtain longitude and latitude；
The micro- inverter of distributed photovoltaic power generation, which instructs communication request, carries out CRC16 verification, and verification judges whether it is communication
Request instruction, if so, the data acquired in real time are sent by ZigBee communication circuit module by ZigBee wireless network
To communications gateway module；
Communications gateway module carries out CRC check to the data acquired in real time received, and data parsing is packaged as
JSON data format transmits data to cloud mqtt proxy server by the way of mqtt agreement；
Cloud mqtt proxy server open port establishes TCP long connection, keeps client and cloud mqtt agency service
Heartbeat packet between device, and theme is customized according to standard mqtt agreement, communications gateway module is configured to publishing side, android hand
Machine client is subscription end, carries out the publication of message and subscribe to push, cloud mqtt proxy server will be counted using rollback mechanism
According to write-in mysql database；
The theme that APP subscribes to mqtt proxy server in cloud using mqtt agreement is monitored, the data for realizing gateway to APP are real
It now shows, visualization processing is carried out to data.
The specific steps that the gateway governor circuit module is initialized as a preferred technical solution, are as follows:
Gateway governor circuit module controls GPRS communication circuit module, ZigBee communication circuit module, gateway main control chip
It is initialized, storehouse size, storage allocation is set；
Gateway governor circuit module sends control instruction to GPRS communication circuit module, and GPRS communication circuit module is set
It sets, carries out functions of modules self-test according to the data of return after the reception instruction of GPRS communication circuit module, whether is access control instruction
It sends successfully.
Compared with the prior art, the invention has the following advantages and beneficial effects:
(1) present invention is responsible for the communication of micro- inverter Yu gateway communication module, micro- inverter using ZigBee communication network
ZigBee communication network configuration with communications gateway module is star topology, and ZigBee is that one kind can be with short in large-scale network-estabilishing
Distance wireless communication mode, and information packet loss is minimum in a certain range, and ZigBee communication network configuration is simple, flexible,
Improve the flexibility of system entirety.
(2) present invention disposes linux system open port using cloud mqtt proxy server, while installing Java ring
The softwares such as border, Ecclipse, Mosquitto, MySQL, cloud mqtt proxy server customizes theme using mqtt agreement, to prison
It controls APP and sends data, reached data active push between communications gateway module and client, the effect to timely update.
(3) present invention completes data transmit-receive using communications gateway module and data are packaged, and communications gateway module is integrated with
GPRS, ZigBee technology, are responsible for more micro- inverters and mqtt proxy server in cloud carries out data interaction, communications gateway module
Interior to use STM32F103 chip, STM32F103 chip has apparent hardware superiority in communication, can be improved system control
Efficiency.
(4) present invention intuitively shows the operating status, parameter, historical data of micro- inverter using monitoring APP to user
And fault diagnosis, user can obtain system running state at the first time, and it is whole readable to improve system.
(5) present invention obtains the location information of distributed photovoltaic power generation system using GPRS communication network, solves distribution
Formula photovoltaic generating system orientation problem, has achieved the effect that accurate positionin and save the cost.
Detailed description of the invention
Fig. 1 is the overall framework schematic diagram of the micro- monitoring inverter system of the present embodiment distributed photovoltaic power generation；
Fig. 2 is the overall structure block diagram of the present embodiment communications gateway module；
Fig. 3 is the gateway governor circuit module principle schematic diagram of the present embodiment communications gateway module；
Fig. 4 is the GPRS communication circuit module schematic illustration of the present embodiment communications gateway module；
Fig. 5 is the ZigBee communication circuit module schematic illustration of the present embodiment communications gateway module；
Fig. 6 is the workflow schematic diagram of the present embodiment communications gateway module；
Fig. 7 is the operation main interface schematic diagram that the present embodiment monitors APP；
Fig. 8 is the detailed interface schematic diagram for the real-time running data that the present embodiment monitors APP；
Fig. 9 is the failure interface schematic diagram that the present embodiment monitors APP；
Figure 10 is the operation history data interface schematic diagram that the present embodiment monitors APP.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Embodiment
As shown in Figure 1, in the present embodiment, the micro- monitoring inverter system of distributed photovoltaic power generation to grid-connected hardware system into
Row sample detecting, grid-connected hardware system include photovoltaic electrification component, the micro- inverter of distributed photovoltaic power generation and power grid, distributed light
The micro- inverter of volt power generation carries out the DC-AC conversion of photovoltaic system, this process needs to carry out sample detecting to a series of parameter,
Such as the voltage and frequency of input voltage, input current, output voltage, output electric current and power grid.
The present embodiment provides a kind of micro- monitoring inverter systems of distributed photovoltaic power generation, comprising: ZigBee communication network,
GPRS communication network, communications gateway module, cloud mqtt proxy server and monitoring APP；
In the present embodiment, the data that the main control chip dsPIC of the micro- inverter of distributed photovoltaic power generation will test pass through
ZigBee communication network is sent to communications gateway module, communications gateway module by from the data that ZigBee communication network transmission is come into
Row parses and is packaged into JSON data, and the GPRS communication network is used to obtain the location information of distributed photovoltaic power generation system,
The GPRS communication network use mqtt agreement, by location information and communications gateway module parsing be packaged after detection data with
Mqtt standard message mode is transferred to cloud mqtt proxy server, and cloud mqtt proxy server stores data in cloud number
According to library and forward data to monitoring APP, the cloud mqtt proxy server customizes theme using mqtt agreement, to monitoring
APP sends data, and the monitoring APP shows the detection data of cloud mqtt proxy server forwarding, and the present embodiment realizes logical
Believe gateway module to message subscribing/issuing function between monitoring APP.
As shown in Fig. 2, communications gateway module includes gateway governor circuit module, ZigBee communication circuit module, GPRS logical
Believe circuit module, program debugging circuit module, eeprom circuit module and power-supplying circuit module；The ZigBee communication electricity
The detection data of photovoltaic micro-inverter is transmitted to gateway governor circuit module by road module, and gateway governor circuit module will test number
Cloud mqtt proxy server is reached according to by GPRS communication circuit module；Wherein gateway governor circuit module control ZigBee is logical
Letter and GPRS communicate two kinds of communications, program debugging circuit for gateway governor circuit module gateway main control chip with
Host computer carries out program debugging；Eeprom circuit module is equipped with the storage chip extended out by SPI communication agreement, for storing hair
Send failure information；Power-supplying circuit module converts voltage to the operating voltage of each chip, is chip by decompression and rectification
The guarantee of normal work, while Interference from current is not generated between chip in order to ensure, each chip is individually powered.
As shown in figure 3, in the present embodiment, gateway governor circuit module uses STMF32F103C8T6 as gateway master
Chip is controlled, which is based on ARM Cortex-M3 framework.STM32F103C8T6 chip supply voltage is 3.3V, communication gate mould
It is 5V that block, which accesses voltage, so needing to be depressured power supply circuit, rectifying.The chip needs external 8Mhz, 32.76KHz brilliant
Vibration ensures that the chip operation period is normal, chip programming program by way of ISP.Communications gateway module needs to provide two kinds and leads to
Letter mode and a SPI protocol channel are to eeprom circuit, and therefore, gateway main control chip needs to use three USART serial ports.
As shown in figure 4, in the present embodiment, GPRS communication circuit module uses SIM800C module, SIM800C module work
Working frequency is GSM/GPRS 850/900/1800/1900MHz, and the transmission of voice, SMS and data information can be realized with low-power consumption,
Starting SIM800C module needs are shorted to the 14 of the module with 15 pins.The module by RXD, TXD pin with
PB10, PB11 pin of STM32F103C8T6 chip are directly connected to be communicated.The RXD of module, which is responsible for receiving, to be come from
The information of STM32F103, TXD is for sending information to STM32F103.
As shown in figure 5, in the present embodiment, ZigBee communication circuit module selects ZM5168 module, ZM5168 module tool
There are two kinds of communication modes of UART, SPI, the communications gateway module of the present embodiment uses UART communication mode.Wherein, ZM5168 mould
Block TXD, RXD pin are connected with gateway main control chip PA9, PA10 pin respectively；State pin is connected with LED circuit, leads to
It crosses LED and shows ZM5168 module working condition.RESETN pin is connected with key reset circuit；LINK pin and gateway master control
Chip I/O pin is connected, to facilitate gateway main control chip to identify communication connection status.The ZigBee communication network of the present embodiment
It is responsible for the communication of micro- inverter Yu gateway communication module, the ZigBee communication network configuration of micro- inverter and communications gateway module is
Star topology, ZigBee are that one kind can be with the short-distance and medium-distance communication of large-scale network-estabilishing, and believes in a certain range
It is minimum to cease packet loss, ZigBee communication network configuration is simple, flexible, improves the flexibility of system entirety.
A kind of micro- monitoring inverter method of distributed photovoltaic power generation is also provided in the present embodiment, as shown in connection with fig. 6, work
Process is as described below:
Point-to-multipoint configuration is carried out firstly the need of to ZigBee-network, stelliform connection topology configuration is configured to, by communication gate mould
The ZigBee communication network module of block is configured to main module, configures the ZigBee communication network module of micro- inverter to from mould
Block guarantees that ZigBee-network can be communicated correctly.
After communications gateway module powers on, gateway governor circuit module controls GPRS communication circuit module, ZigBee communication electricity
Road module, gateway main control chip are initialized, and storehouse size, storage allocation is arranged；
Gateway governor circuit module sends control instruction to GPRS communication circuit module, and GPRS communication circuit module is set
It sets, carries out functions of modules self-test according to the data of return after the reception instruction of GPRS communication circuit module, whether is access control instruction
It sends successfully, whether detection GPRS communication circuit module function is normal.
After the completion of initialization, gateway governor circuit module sends communication request to the ZigBee communication circuit module postponed
Instruction, while gateway governor circuit module sends to GPRS communication network and sends base station location instruction, and by the positioning of return
Data parse to obtain longitude and latitude；
The micro- inverter of distributed photovoltaic power generation, which instructs communication request, carries out CRC16 verification, and verification judges whether it is communication
Request instruction, if so, the data acquired in real time are sent by ZigBee communication circuit module by ZigBee communication network
To communications gateway module；
Communications gateway module carries out CRC check to the data acquired in real time received, and data parsing is packaged as
JSON data format transmits data to cloud mqtt proxy server by the way of mqtt standard message；
Cloud mqtt proxy server open port establishes TCP long connection, keeps client and cloud mqtt agency service
Heartbeat packet between device, and theme is customized according to standard mqtt agreement, communications gateway module is configured to publishing side, android hand
Machine client is subscription end, carries out the publication of message and subscribe to push, cloud mqtt proxy server will be counted using rollback mechanism
According to write-in mysql database；
The theme that APP subscribes to mqtt proxy server in cloud using mqtt agreement is monitored, the data for realizing gateway to APP are real
It now shows, visualization processing is carried out to data.
In the present embodiment, mqtt agreement is carried out data transmission based on TCP long connection, and having is GPRS telecommunication circuit mould
Block opens TCP working method；Communications gateway module carries out the school CRC by the data that ZigBee communication network is sent to micro- inverter
It tests, is to guarantee received data correctness and integrality；The step of wherein data parse, specifically will according to data format
Two 16 system numbers are converted into 10 system numbers, reconstruct JSON data format.
The communications gateway module of the present embodiment completes data transmit-receive and data are packaged, communications gateway module be integrated with GPRS,
ZigBee technology, is responsible for more micro- inverters and mqtt proxy server in cloud carries out data interaction, gateway governor circuit module
Interior to use STM32F103 chip, compared to low side single-chip microcontroller, STM32F103 chip has apparent hardware superiority in communication,
It can be improved system control efficiency.
In the present embodiment, the preferred Ali's cloud ECS server of cloud mqtt proxy server, server disposition Linux system
System open port, while the softwares such as Java context, Ecclipse, Mosquitto, MySQL being installed, cloud mqtt proxy server
Have the function of data storage, data-pushing, cloud Mqtt proxy server rise data forwarding function, monitoring App do not need from
Database reads data.
In the present embodiment, mqtt proxy server disposes background service program beyond the clouds, and installs MYSQL database,
Then data and Android client one that corresponding table is read by long-range fastening means are established in MYSQL database
It causes.
As shown in fig. 7, the network voltage, frequency when the operation main interface of monitoring APP can show micro- invertor operation are joined
Realtime power, history generated energy, the power conversion on the same day of several, micro- inverter count and show real-time and two days futures
Weather information etc.；
As shown in figure 8, the key on the right side of monitoring APP operation main interface is clicked, into electricity generation system real-time running data
Detailed interface, interface display electric network information, the input voltage of each micro- inverter, input current, output voltage, output electricity
Flow real-time parameter.
As shown in figure 9, micro- fault of converter machine number when monitoring APP failure interface can show micro- invertor operation and
Fault type, fault state, and maintenance hot line etc., facilitates user and the quick positioning system failure of maintenance personal.
As shown in Figure 10, monitoring APP historical data interface can show the statistics of micro- invertor operation Nian Yuyue data, with
And the column statistical chart to the daily generated energy of of that month data, while the data of specific some day can be inquired.
In the present embodiment, monitoring APP by intuitive way to user show micro- inverse invertor operation state, parameter,
Historical data and fault diagnosis.User can obtain system running state at the first time.It is whole readable to improve system.
The above embodiment is a preferred embodiment of the present invention, but embodiments of the present invention are not by above-described embodiment
Limitation, other any changes, modifications, substitutions, combinations, simplifications made without departing from the spirit and principles of the present invention,
It should be equivalent substitute mode, be included within the scope of the present invention.
Claims (9)
1. a kind of micro- monitoring inverter system of distributed photovoltaic power generation characterized by comprising ZigBee communication network, GPRS
Communication network, communications gateway module, cloud mqtt proxy server and monitoring APP；
The ZigBee communication network is used to the detection data of multiple photovoltaic micro-inverters being transferred to communications gateway module, described
Communications gateway module will test data and be parsed and be packaged, and the GPRS communication network is for obtaining distributed photovoltaic power generation system
The location information of system, the GPRS communication network use mqtt agreement, after location information and communications gateway module parsing are packaged
Detection data be transferred to cloud mqtt proxy server, the cloud mqtt proxy server is using mqtt agreement customization master
Topic sends detection data to monitoring APP, and the monitoring APP shows the detection data of cloud mqtt proxy server forwarding.
2. the micro- monitoring inverter system of distributed photovoltaic power generation according to claim 1, which is characterized in that the communication network
Closing module includes gateway governor circuit module, ZigBee communication circuit module, GPRS communication circuit module, program debugging circuit mould
Block, eeprom circuit module and power-supplying circuit module；
The detection data of photovoltaic micro-inverter is transmitted to gateway governor circuit module, gateway by the ZigBee communication circuit module
Governor circuit module will test data and reach cloud mqtt proxy server by GPRS communication circuit module；
Described program debug circuit module carries out program debugging, the EEPROM electricity for gateway governor circuit module and host computer
Road module is equipped with the storage chip extended out by SPI communication agreement, sends failure information, the power-supplying circuit for storing
Module converts voltage to the operating voltage of each chip in communications gateway module, each chip is independent by decompression and rectification
Power supply.
3. the micro- monitoring inverter system of distributed photovoltaic power generation according to claim 2, which is characterized in that the gateway master
Control circuit module be equipped with gateway main control chip, the gateway main control chip use STMF32F103C8T6 chip, external 8MHz,
32.76KHz crystal oscillator, and the programming program by the way of ISP, the gateway main control chip are set there are three USART serial ports, respectively
GPRS communication interface, ZigBee communication interface and SPI protocol channel interface.
4. the micro- monitoring inverter system of distributed photovoltaic power generation according to claim 2, which is characterized in that the GPRS is logical
Believe circuit module use SIM800C module, RXD, TXD pin of SIM800C module respectively with gateway governor circuit module
TXD, RXD pin are connected.
5. the micro- monitoring inverter system of distributed photovoltaic power generation according to claim 2, which is characterized in that the ZigBee
Communication circuit module use ZM5168 module, ZM5168 module TXD, RXD pin respectively with the TXD of gateway governor circuit module,
RXD pin is connected, and LINK pin is connected with the I/O pin of gateway governor circuit module.
6. the micro- monitoring inverter system of distributed photovoltaic power generation according to claim 1, which is characterized in that the cloud
Mqtt proxy server dispose linux system open port, while install Java context, Ecclipse, Mosquitto and
MySQL software.
7. the micro- monitoring inverter system of distributed photovoltaic power generation according to claim 1, which is characterized in that the monitoring
APP is provided with operation main interface, the detailed interface of real-time running data, failure interface and historical data interface.
8. a kind of micro- monitoring inverter method of distributed photovoltaic power generation, which is characterized in that include the following steps:
ZigBee communication network configuration is stelliform connection topology configuration, configures the ZigBee communication network module of communications gateway module to
Main module configures the ZigBee communication network module of micro- inverter to from module；
Gateway governor circuit module is initialized；
After the completion of initialization, gateway governor circuit module refers to the ZigBee communication circuit module transmission communication request postponed
It enables, while gateway governor circuit module sends positioning instruction to GPRS communication network, and the location data of return is parsed
To longitude and latitude；
The micro- inverter of distributed photovoltaic power generation, which instructs communication request, carries out CRC16 verification, and verification judges whether it is communication request
Instruction, if so, the data acquired in real time are sent to by ZigBee wireless network by ZigBee communication circuit module logical
Believe gateway module；
Communications gateway module carries out CRC check to the data acquired in real time received, and data parsing is packaged as JSON number
According to format, cloud mqtt proxy server is transmitted data to by the way of mqtt agreement；
Cloud mqtt proxy server open port, establishes TCP long connection, keep client and cloud mqtt proxy server it
Between heartbeat packet, and theme is customized according to standard mqtt agreement, communications gateway module is configured to publishing side, android mobile phone visitor
Family end is subscription end, carries out the publication of message and subscribe to push, cloud mqtt proxy server is write data using rollback mechanism
Enter mysql database；
The theme that APP subscribes to mqtt proxy server in cloud using mqtt agreement is monitored, the data for realizing gateway to APP are realized aobvious
Show, visualization processing is carried out to data.
9. the micro- monitoring inverter method of distributed photovoltaic power generation according to claim 8, which is characterized in that the gateway master
The specific steps that control circuit module is initialized are as follows:
Gateway governor circuit module controls GPRS communication circuit module, ZigBee communication circuit module, gateway main control chip and carries out
Storehouse size, storage allocation is arranged in initialization；
Gateway governor circuit module sends control instruction to GPRS communication circuit module, and GPRS communication circuit module is configured,
Functions of modules self-test is carried out according to the data of return after the reception instruction of GPRS communication circuit module, whether access control instruction sends
Success.
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