CN115133658A - Communication acquisition system and acquisition method for photovoltaic inverter - Google Patents
Communication acquisition system and acquisition method for photovoltaic inverter Download PDFInfo
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- 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
- H02J13/00002—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 monitoring
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- H—ELECTRICITY
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- 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
- H02J13/00001—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 the display of information or by user interaction, e.g. supervisory control and data acquisition systems [SCADA] or graphical user interfaces [GUI]
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- 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
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- 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
- H02J13/00016—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 a wired telecommunication network or a data transmission bus
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- 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
- H02J13/00022—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 wireless data transmission
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- 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
- H02J13/00028—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 involving the use of Internet protocols
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- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/381—Dispersed generators
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- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S50/00—Monitoring or testing of PV systems, e.g. load balancing or fault identification
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- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/20—The dispersed energy generation being of renewable origin
- H02J2300/22—The renewable source being solar energy
- H02J2300/24—The renewable source being solar energy of photovoltaic origin
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Abstract
The invention provides a communication acquisition system and an acquisition method of a photovoltaic inverter, wherein the system comprises a communication acquisition unit, a dispatching automation platform and the photovoltaic inverter; the photovoltaic inverter is used for acquiring telemetering data, remote signaling data and remote adjusting data of inverters of different manufacturers and transmitting the telemetering data, the remote signaling data and the remote adjusting data to the communication acquisition unit; the communication acquisition unit converts photovoltaic inversion protocol protocols of different manufacturers into a uniform photovoltaic acquisition protocol, and then sends telemetering data, remote signaling data and remote regulation data of inverters of different manufacturers to the dispatching automation platform; and the dispatching automation platform is used for obtaining remote control and power regulation and control operation on the inverters according to the remote measuring data, the remote signaling data and the remote regulating data of the inverters of different manufacturers, and issuing the operation to each inverter through the communication acquisition unit. Based on the system, a communication acquisition method of the photovoltaic inverter is further provided. The invention realizes the unified access of various inverters, reduces the operation and maintenance difficulty and the operation and maintenance cost and generates obvious economic benefit.
Description
Technical Field
The invention belongs to the technical field of distributed photovoltaic systems, and particularly relates to a communication acquisition system and an acquisition method of a photovoltaic inverter.
Background
At present, the novel power system taking new energy as a main body enters a rapid development period, and the distributed photovoltaic stations form an important power supply support of a regional power grid and increasingly influence the safe operation of the power grid. According to the national standard, the industrial standard, the grid-connected scheduling protocol and other relevant regulations, the grid-connected plant station is responsible for the operation and maintenance work of the plant station-side electric power monitoring system, and the relevant plant station operation information meeting the requirements is transmitted to the scheduling automation system of the scheduling mechanism, so that the scheduling operation requirements of the power grid are met. However, due to the influence of factors in natural conditions, technical economy, operation and maintenance management and the like, data channels of some plant stations are missing, interrupted or abnormal, and the in-station operation data required by the operation of the power grid cannot be transmitted according to the regulations, so that the observation and control capability of power grid regulation and control personnel on the power grid is influenced, the new energy consumption and the power balance are not facilitated, and the safe and stable operation of the power grid is influenced in severe cases. Distributed photovoltaic is developed on a large scale and is connected to the grid in a high proportion, the distributed photovoltaic is 'observable, measurable, adjustable and controllable' comprehensively, the problems related to power grid absorption and grid-connected service are solved by utilizing informatization and digitization technologies, power generation output prediction, power balance and real-time scheduling are well done, and the method is a necessary measure for ensuring safe and stable operation of a power grid.
The photovoltaic inverter can not be directly managed by the current power grid, distributed photovoltaic parameters can be acquired by the power grid through an ammeter, the power grid can be observed, measured, uncontrollable and unadjustable, flexible control can not be achieved, direct management of the photovoltaic inverter is required to be achieved, and functions of power grid dispatching remote measurement, remote control and remote regulation are achieved. At present, a plurality of photovoltaic inverter manufacturers exist, no standard protocol exists, and the realization of unified management is difficult; the distributed photovoltaic inverters are scattered in installation and large in quantity, field construction personnel are uneven, and the field debugging capability is not achieved. The photovoltaic inverter access mode is not standard, the configuration is complex, the requirements are not met, a large amount of rapid and standard access in the later period is difficult to support, and hidden dangers are left for the later period access.
Disclosure of Invention
In order to solve the technical problems, the invention provides a communication acquisition system and an acquisition method of a photovoltaic inverter, which realize the unified access of various inverters, reduce the operation and maintenance difficulty and the operation and maintenance cost and generate obvious economic benefits.
In order to achieve the purpose, the invention adopts the following technical scheme:
a communication collection system for a photovoltaic inverter, comprising: the system comprises a communication acquisition unit, a dispatching automation platform and a photovoltaic inverter;
the photovoltaic inverter is used for acquiring telemetering data, remote signaling data and remote adjusting data of inverters of different manufacturers and transmitting the telemetering data, the remote signaling data and the remote adjusting data to the communication acquisition unit;
the communication acquisition unit converts photovoltaic inversion protocol protocols of different manufacturers into a uniform photovoltaic acquisition protocol, and sends acquired telemetering data, remote signaling data and remote regulation data of inverters of different manufacturers to the dispatching automation platform;
and the dispatching automation platform is used for obtaining remote control and power regulation and control operation on the inverters according to the remote measuring data, the remote signaling data and the remote regulation data of the inverters of different manufacturers, and transmitting the remote control and power regulation and control operation to each inverter through the communication acquisition unit.
Further, the telemetering data comprises inverter voltage, inverter current, inverter power, daily inverter power generation amount and total inverter power generation amount.
Further, the remote signaling data includes inverter status.
Further, the telemetry data includes percentage of ACG controlling all inverters
Further, the communication acquisition unit comprises an acquisition module and an uploading module;
the acquisition module is used for converting photovoltaic inversion protocols of different manufacturers into a uniform photovoltaic acquisition protocol for butt joint with the dispatching automation platform after global initialization, and acquiring telemetering data, telesignaling data and teleregulating data of inverters of different manufacturers through an inverter monitoring service;
the uploading module is used for sending the acquired telemetering data, remote signaling data and remote adjusting data of the inverters of different manufacturers to the dispatching automation platform.
Further, the detailed process executed by the acquisition module includes:
acquiring a monitoring port of a monitoring site to be established, determining an inverter manufacturer according to the monitoring port, allocating an IP address to the inverter, and traversing and requesting telemetering data, remote signaling data and remote regulating data of the inverters of different manufacturers.
Further, the method for requesting the inverter telemetering data and the remote signaling data of different manufacturers in a traversing manner comprises the following steps: and reading the remote measurement data and the remote signaling data of the inverters of different manufacturers according to the configuration point table file.
Further, the detailed process of the cooperative work of the communication acquisition unit and the dispatching automation platform comprises the following steps:
establishing connection with inverters and uploading modules of a plurality of manufacturers; periodically collecting various data of inverters of different manufacturers and storing the data into a forwarding array;
converting various data of inverters of different manufacturers into IEC104 protocols by the forwarding array and uploading the IEC104 protocols to a dispatching automation platform;
receiving remote control and power regulation and control operation of the inverter issued by the dispatching automation platform, determining an execution position, and carrying out relevant control operation and recording on the inverter.
The invention also provides a communication acquisition method of the photovoltaic inverter, which is realized based on a communication acquisition system of the photovoltaic inverter and comprises the following steps:
the method comprises the steps that telemetering data, remote signaling data and remote adjusting data of inverters of different manufacturers are obtained through photovoltaic inverters and are transmitted to a communication acquisition unit;
converting photovoltaic inversion protocol protocols of different manufacturers into a uniform photovoltaic acquisition protocol through a communication acquisition unit, and sending acquired telemetering data, remote signaling data and remote regulation data of inverters of different manufacturers to a dispatching automation platform;
and obtaining remote control and power regulation and control operation of the inverters according to the telemetering data, the remote signaling data and the remote regulation data of the inverters of different manufacturers through the dispatching automation platform, and issuing the operation to each inverter through the communication acquisition unit.
Further, the detailed process comprises the following steps:
establishing connection with inverters and uploading modules of a plurality of manufacturers; periodically collecting various data of inverters of different manufacturers, and storing the data into a forwarding array;
converting various data of inverters of different manufacturers into IEC104 protocols by the forwarding array and uploading the IEC104 protocols to a dispatching automation platform;
receiving remote control and power regulation and control operation of the inverter issued by the dispatching automation platform, determining an execution position, and carrying out relevant control operation and recording on the inverter.
The effect provided in the summary of the invention is only the effect of the embodiment, not all the effects of the invention, and one of the above technical solutions has the following advantages or beneficial effects:
the invention provides a communication acquisition system and an acquisition method of a photovoltaic inverter, wherein the acquisition system comprises a communication acquisition unit, a dispatching automation platform and the photovoltaic inverter; the photovoltaic inverter is used for acquiring telemetering data, remote signaling data and remote adjusting data of inverters of different manufacturers and transmitting the telemetering data, the remote signaling data and the remote adjusting data to the communication acquisition unit; the communication acquisition unit converts photovoltaic inversion protocol protocols of different manufacturers into a uniform photovoltaic acquisition protocol, and sends acquired telemetering data, remote signaling data and remote regulation data of inverters of different manufacturers to the dispatching automation platform; and the dispatching automation platform is used for obtaining remote control and power regulation and control operation on the inverters according to the remote measuring data, the remote signaling data and the remote regulating data of the inverters of different manufacturers, and transmitting the remote control and power regulation and control operation to each inverter through the communication acquisition unit. A communication acquisition system based on a photovoltaic inverter also provides a communication acquisition method of the photovoltaic inverter. The invention establishes a standardized model, realizes the dynamic migration and reliable operation of software functions on a hardware platform, is compatible with common communication protocols and standards, realizes interconnection and intercommunication and reduces the development and construction cost of other applications; the unified access of various inverters is realized, the operation and maintenance difficulty and the operation and maintenance cost are reduced, and remarkable economic benefits are generated.
The invention realizes the configuration-free rapid application of the communication terminal of the photovoltaic inverter, promotes the standardized acquisition and calling of data, enhances the unified access and control capability of the dispatching platform on the photovoltaic inverter, improves the convenience and practicability of operation and maintenance personnel, and reduces the operation and maintenance workload and the maintenance difficulty.
The invention standardizes the photovoltaic access standards of different manufacturers, improves the efficiency of data acquisition, transmission and calculation of various types of communication terminals, solves the problem of large-scale distributed photovoltaic grid-connected control, and provides powerful support for realizing 'observable, measurable, adjustable and controllable' of a low-voltage distributed power supply.
Drawings
Fig. 1 is a schematic connection diagram of a communication acquisition system of a photovoltaic inverter according to embodiment 1 of the present invention;
fig. 2 is a schematic structural diagram of an implementation of a communication acquisition unit in embodiment 1 of the present invention;
fig. 3 is a schematic flow chart of implementation of a communication acquisition unit in embodiment 1 of the present invention;
fig. 4 is a flowchart of data acquisition of the photovoltaic inverter according to embodiment 1 of the present invention;
FIG. 5 is a flowchart of an embodiment 1 of the present invention for scheduling execution of an automation platform;
fig. 6 is a flowchart of receiving a control command of a dispatching automation platform by a photovoltaic inverter according to embodiment 1 of the present invention;
fig. 7 is a flowchart of a communication collection method for a photovoltaic inverter according to embodiment 1 of the present invention.
Detailed Description
In order to clearly explain the technical features of the present invention, the following detailed description of the present invention is provided with reference to the accompanying drawings. The following disclosure provides many different embodiments, or examples, for implementing different features of the invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. It should be noted that the components illustrated in the figures are not necessarily drawn to scale. Descriptions of well-known components and processing techniques and procedures are omitted so as to not unnecessarily limit the invention.
Example 1
The embodiment 1 of the invention provides a communication acquisition system of a photovoltaic inverter, which comprises a communication acquisition unit, a dispatching automation platform and the photovoltaic inverter;
the photovoltaic inverter is used for acquiring telemetering data, remote signaling data and remote adjusting data of inverters of different manufacturers and transmitting the telemetering data, the remote signaling data and the remote adjusting data to the communication acquisition unit;
the communication acquisition unit converts photovoltaic inversion protocol protocols of different manufacturers into a uniform photovoltaic acquisition protocol, and sends acquired telemetering data, remote signaling data and remote regulation data of inverters of different manufacturers to the dispatching automation platform;
and the dispatching automation platform is used for obtaining remote control and power regulation and control operation on the inverters according to the remote measuring data, the remote signaling data and the remote regulating data of the inverters of different manufacturers, and transmitting the remote control and power regulation and control operation to each inverter through the communication acquisition unit.
Fig. 1 is a schematic connection diagram of a communication acquisition system of a photovoltaic inverter according to embodiment 1 of the present invention; the communication acquisition unit in fig. 1 is implemented by a communication acquisition terminal. The photovoltaic inverter is in communication connection with the communication acquisition terminal, and the communication acquisition terminal is in communication connection with the dispatching automation platform.
The telemetering data comprises inverter voltage, inverter current, inverter power, daily inverter power generation amount and total inverter power generation amount. The remote signaling data includes inverter status. The telemetry data includes the percentage of ACG controlling all inverters.
The communication acquisition unit firstly converts photovoltaic inversion protocol protocols of different manufacturers into a uniform photovoltaic acquisition protocol, and the standard data model is as follows:
wherein the telemetry data:
#1 inverter Voltage
And (3) sending: 010300000001 crc
Receiving: 010302 data CRC;
#1 inverter Current
And (3) sending: 010300010001 crc
Receiving: 010302 data CRC;
#1 inverter Power
And (3) sending: 010300020001 crc
Receiving: 010302 data CRC;
#1 inverter daily generated energy
And (3) sending: 010300030001 crc
Receiving: 010302 data CRC;
#1 inverter Total Power Generation
And (3) sending: 010300040001 crc
Receiving: 010302 data CRC;
#2 inverter Voltage
And (3) sending: 010300050001 crc
Receiving: 010302 data CRC;
#1 inverter voltage current power daily generated energy total generated energy
And (3) sending: 010300000005 crc;
receiving: 01030A (data by 5 CRC).
Remote signaling data:
#1 inverter State
And (3) sending: 010200000008 crc
Receiving: 010201 data CRC low order seven BITs;
for example, the data: 13- - > 00010011 is 00 (no quota) 0 (no derating) 1 (no standby) 0 (no fault shutdown) 0 (no control shutdown) 1 (no initial standby) 1 (normal operation yes).
#2 inverter State
And (3) sending: 010200010008 crc
Receiving: 010201 data CRC low order seven BITs;
#1 inverter State #2 inverter State
And (3) sending: 010200000010 crc
Receiving: 010202 data CRC.
Remote regulation data:
control of all inverter ACG percentages
And (3) sending: 01060000 percent crc
Receiving: 0106000001 CRC// set success
Regular decimal system: 10000 ═ 100%, 1000 ═ 10%
Example sending control inverter ACG 50%
01 06 00 00 13 88crc。
Fig. 2 is a schematic structural diagram of an implementation of a communication acquisition unit in embodiment 1 of the present invention; fig. 3 is a schematic flowchart of an implementation of a communication acquisition unit in embodiment 1 of the present invention;
the communication acquisition system comprises an acquisition unit and an uploading unit; the acquisition unit is used for converting photovoltaic inversion protocol protocols of different manufacturers into a uniform photovoltaic acquisition protocol for butt joint with the dispatching automation platform after global initialization, and acquiring remote measurement data, remote signaling data and remote regulation data of inverters of different manufacturers through an inverter monitoring service; the uploading unit is used for sending the acquired telemetering data, remote signaling data and remote adjusting data of the inverters of different manufacturers to the dispatching automation platform.
The communication acquisition system acquires photovoltaic inverter data through a standard photovoltaic acquisition protocol, converts the photovoltaic inverter data into an IEC104 protocol and forwards the photovoltaic inverter data to the dispatching automation platform.
Fig. 4 is a flowchart of data acquisition of the photovoltaic inverter according to embodiment 1 of the present invention;
after the module is initialized, a corresponding client acquisition thread is started according to a photovoltaic inverter manufacturer which needs to be acquired and is configured in a configuration file, and data such as request voltage, current, power, generated energy and the like are traversed. And the Modbus slave service transmits the photovoltaic inverter data to the dispatching master station module in a communication manner. Reading the configuration file, obtaining a monitoring port of a monitoring site to be created, determining an inverter manufacturer according to the monitoring port, and allocating an IP address to the inverter, wherein the IP address is used as the unique ID of the inverter. After the inverter is connected, a client acquisition thread is created, a set power authority is opened, then data such as request voltage, alternating current, direct current, active power, reactive power, power factor, daily generated energy, total generated energy and current power percentage are traversed regularly, and the data are stored in a data array in a global variable according to a uniform format. The command is executed on the inverter when the limited power is commanded.
FIG. 5 is a flowchart of an embodiment 1 of the present invention for scheduling execution of an automation platform; fig. 6 is a flowchart of the photovoltaic inverter receiving a control command from the dispatching automation platform. Establishing connection with inverters and uploading modules of a plurality of manufacturers; periodically collecting various data of inverters of different manufacturers, and storing the data into a forwarding array; the forwarding array converts various data of inverters of different manufacturers into IEC104 protocols and uploads the IEC104 protocols to the dispatching automation platform; receiving remote control and power regulation and control operation of the inverter issued by the dispatching automation platform, determining an execution position, and carrying out relevant control operation and recording on the inverter.
The communication acquisition system of the photovoltaic inverter provided by the embodiment 1 of the invention establishes a standardized model, realizes dynamic migration and reliable operation of software functions on a hardware platform, is compatible with common communication protocols and standards, realizes interconnection and intercommunication, and reduces other application development and construction costs; the unified access of various inverters is realized, the operation and maintenance difficulty and the operation and maintenance cost are reduced, and remarkable economic benefits are generated.
The communication acquisition system of the photovoltaic inverter provided by the embodiment 1 of the invention realizes the configuration-free and rapid application of the communication terminal of the photovoltaic inverter, promotes the standardized acquisition and calling of data, enhances the unified access and control capability of a dispatching platform on the photovoltaic inverter, improves the convenience and practicability of operation and maintenance personnel, and reduces the operation and maintenance workload and the maintenance difficulty.
The communication acquisition system of the photovoltaic inverter provided by the embodiment 1 of the invention standardizes the photovoltaic access standards of different manufacturers, improves the efficiency of data acquisition, transmission and calculation of various types of communication terminals, solves the problem of large-scale distributed photovoltaic grid-connected control, and provides powerful support for realizing 'observability, measurability, adjustability and controllability' of a low-voltage distributed power supply.
Example 2
Based on the communication acquisition system of the photovoltaic inverter proposed in embodiment 1 of the present invention, embodiment 2 of the present invention further proposes a communication acquisition method of the photovoltaic inverter, and fig. 7 is a flowchart of a communication acquisition method of the photovoltaic inverter proposed in embodiment 1 of the present invention, where the method includes the following steps:
in step S700, telemetry data, remote signaling data, and remote regulation data of inverters of different manufacturers are obtained by the photovoltaic inverter and transmitted to the communication acquisition unit; the telemetering data comprises inverter voltage, inverter current, inverter power, daily inverter power generation amount and total inverter power generation amount. The remote signaling data includes inverter status. The telemetry data includes the percentage of ACG controlling all inverters.
In step S710, converting the photovoltaic inversion protocol protocols of different manufacturers into a uniform photovoltaic acquisition protocol by the communication acquisition unit, and sending the obtained telemetry data, remote signaling data, and remote regulation data of the inverters of different manufacturers to the dispatching automation platform;
in step S720, the remote control and power regulation operation on the inverters is obtained through the scheduling automation platform according to the telemetry data, the remote signaling data and the remote regulation data of the inverters of different manufacturers, and the operation is issued to each inverter through the communication acquisition unit.
The detailed process comprises the following steps:
establishing connection with inverters and uploading modules of a plurality of manufacturers; periodically collecting various data of inverters of different manufacturers and storing the data into a forwarding array;
converting various data of inverters of different manufacturers into IEC104 protocols by the forwarding array and uploading the IEC104 protocols to a dispatching automation platform;
receiving remote control and power regulation and control operation of the inverter issued by the dispatching automation platform, determining an execution position, and carrying out relevant control operation and recording on the inverter.
The communication acquisition method of the photovoltaic inverter, which is provided by the embodiment 2 of the invention, establishes a standardized model, realizes dynamic migration and reliable operation of software functions on a hardware platform, is compatible with common communication protocols and standards, realizes interconnection and intercommunication, and reduces other application development and construction costs; the unified access of various inverters is realized, the operation and maintenance difficulty and the operation and maintenance cost are reduced, and remarkable economic benefits are generated.
The communication acquisition method of the photovoltaic inverter, provided by the embodiment 2 of the invention, realizes the configuration-free and quick application of the communication terminal of the photovoltaic inverter, promotes the standardized acquisition and calling of data, enhances the unified access and control capability of a dispatching platform on the photovoltaic inverter, improves the convenience and practicability of operation and maintenance personnel, and reduces the operation and maintenance workload and the maintenance difficulty.
The communication acquisition method of the photovoltaic inverter provided by the embodiment 1 of the invention standardizes the photovoltaic access standards of different manufacturers, improves the efficiency of data acquisition, transmission and calculation of various types of communication terminals, solves the problem of large-scale distributed photovoltaic grid-connected control, and provides powerful support for realizing 'observability, measurability, adjustability and controllability' of a low-voltage distributed power supply.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Furthermore, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include elements inherent in the list. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element. In addition, parts of the technical solutions provided in the embodiments of the present application that are consistent with implementation principles of corresponding technical solutions in the prior art are not described in detail, so as to avoid redundant description.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, the scope of the present invention is not limited thereto. Various modifications and alterations will occur to those skilled in the art based on the foregoing description. This need not be, nor should it be exhaustive of all embodiments. On the basis of the technical scheme of the invention, various modifications or changes which can be made by a person skilled in the art without creative efforts are still within the protection scope of the invention.
Claims (10)
1. A communication acquisition system for a photovoltaic inverter, comprising: the system comprises a communication acquisition unit, a dispatching automation platform and a photovoltaic inverter;
the photovoltaic inverter is used for acquiring telemetering data, remote signaling data and remote regulating data of inverters of different manufacturers and transmitting the telemetering data, the remote signaling data and the remote regulating data to the communication acquisition unit;
the communication acquisition unit converts photovoltaic inversion protocol protocols of different manufacturers into a uniform photovoltaic acquisition protocol, and sends acquired telemetering data, remote signaling data and remote regulation data of inverters of different manufacturers to the dispatching automation platform;
and the dispatching automation platform is used for obtaining remote control and power regulation and control operation on the inverters according to the remote measuring data, the remote signaling data and the remote regulation data of the inverters of different manufacturers, and transmitting the remote control and power regulation and control operation to each inverter through the communication acquisition unit.
2. The communication collection system for the photovoltaic inverter according to claim 1, wherein the telemetry data comprises inverter voltage, inverter current, inverter power, daily inverter power generation and total inverter power generation.
3. The communication acquisition system of a photovoltaic inverter of claim 2, wherein the remote signaling data includes inverter status.
4. The communication acquisition system of a photovoltaic inverter of claim 3, wherein the telemetry data includes percentage ACG controlling all inverters.
5. The communication acquisition system of the photovoltaic inverter as claimed in claim 4, wherein the communication acquisition unit comprises an acquisition module and an uploading module;
the acquisition module is used for converting photovoltaic inversion protocols of different manufacturers into a uniform photovoltaic acquisition protocol for butt joint with the dispatching automation platform after global initialization, and acquiring telemetering data, remote signaling data and remote regulating data of inverters of different manufacturers through an inverter monitoring service;
and the uploading module is used for sending the acquired telemetering data, remote signaling data and remote regulating data of inverters of different manufacturers to the dispatching automation platform.
6. The communication acquisition system of a photovoltaic inverter according to claim 5, wherein the detailed process executed by the acquisition module comprises:
acquiring a monitoring port of a monitoring site to be established, determining an inverter manufacturer according to the monitoring port, allocating an IP address to the inverter, and traversing and requesting telemetering data, remote signaling data and remote regulating data of the inverters of different manufacturers.
7. The communication acquisition system of the photovoltaic inverter as claimed in claim 4, wherein the method for traversing and requesting the remote sensing data and the remote signaling data of inverters of different manufacturers is as follows: and reading the remote measurement data and the remote signaling data of the inverters of different manufacturers according to the configuration point table file.
8. The communication acquisition system of the photovoltaic inverter as claimed in claim 4, wherein the detailed process of the cooperation of the communication acquisition unit and the dispatching automation platform comprises:
establishing connection with inverters and uploading modules of a plurality of manufacturers; periodically collecting various data of inverters of different manufacturers, and storing the data into a forwarding array;
converting various data of inverters of different manufacturers into IEC104 protocols by the forwarding array and uploading the IEC104 protocols to a dispatching automation platform;
receiving remote control and power regulation and control operation of the inverter issued by the dispatching automation platform, determining an execution position, and carrying out relevant control operation and recording on the inverter.
9. A communication acquisition method of a photovoltaic inverter is realized based on the communication acquisition system of the photovoltaic inverter as claimed in any one of claims 1 to 8, and is characterized by comprising the following steps:
the method comprises the steps that telemetering data, remote signaling data and remote adjusting data of inverters of different manufacturers are obtained through photovoltaic inverters and are transmitted to a communication acquisition unit;
converting photovoltaic inversion protocol protocols of different manufacturers into a uniform photovoltaic acquisition protocol through a communication acquisition unit, and sending acquired telemetering data, remote signaling data and remote regulation data of inverters of different manufacturers to a dispatching automation platform;
and obtaining remote control and power regulation and control operation of the inverters according to the telemetering data, the remote signaling data and the remote regulation data of the inverters of different manufacturers through the dispatching automation platform, and transmitting the operation to each inverter through the communication acquisition module.
10. The communication acquisition method for the photovoltaic inverter according to claim 9, wherein the detailed process comprises:
establishing connection with inverters and uploading modules of a plurality of manufacturers; periodically collecting various data of inverters of different manufacturers, and storing the data into a forwarding array;
converting various data of inverters of different manufacturers into IEC104 protocols by the forwarding array and uploading the IEC104 protocols to a dispatching automation platform;
receiving remote control and power regulation and control operations of the inverter issued by the dispatching automation platform, determining an execution position, and carrying out related control operations and recording on the inverter.
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