CN111130220B - Distributed photovoltaic power station information acquisition and monitoring device - Google Patents
Distributed photovoltaic power station information acquisition and monitoring device Download PDFInfo
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- CN111130220B CN111130220B CN202010040048.0A CN202010040048A CN111130220B CN 111130220 B CN111130220 B CN 111130220B CN 202010040048 A CN202010040048 A CN 202010040048A CN 111130220 B CN111130220 B CN 111130220B
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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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- G—PHYSICS
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- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
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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
- H04L67/02—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP]
- H04L67/025—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP] for remote control or remote monitoring of applications
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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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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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- Y02P80/20—Climate change mitigation technologies for sector-wide applications using renewable energy
Abstract
A device for collecting and monitoring information of a distributed photovoltaic power station relates to the technical field of photovoltaic power stations, and comprises the following structures: mainly comprises a hardware system and a software system; the hardware system is realized based on an industrial embedded core board of a 32-bit ARM9 microprocessor, and is composed of a core board, a power management unit, a clock management unit, a storage unit, a liquid crystal display unit and a peripheral interface unit group; the software system is divided into a system supporting layer, a business supporting layer and an application layer, information is collected through a downlink data collecting module and is processed through a data statistics management module, and information collection and monitoring are completed through data uploading and monitoring information transmission of a data uploading communication module. The invention has the beneficial effects that: the data timeliness checking technology, the data integrity checking technology and the data self-repairing technology which are suitable for the distributed photovoltaic power station total station data monitoring are adopted, so that the acquired data are ensured to have timeliness, integrity and accuracy.
Description
Technical Field
The invention relates to the technical field of photovoltaic power stations, in particular to a distributed photovoltaic power station information acquisition and monitoring device.
Background
In order to promote the revolution of energy production and consumption and advocate clean low-carbon, safe and high-energy system and build the general strategic deployment of charming China, the China goes out of a series of policies to encourage and support the development of distributed energy, the distributed energy grid-connected series standard is respectively released, the distributed energy in China starts later, and most of distributed energy projects are in a pause state due to the problems of electric grid connection, benefit or technology and the like. At present, most of distributed photovoltaic power stations have no effective communication capability and remote monitoring management capability, and a small part of power stations are provided with photovoltaic information acquisition devices, but only a small amount of information of few devices such as inverters can be acquired, so that the requirements of power automation management cannot be met. Because photovoltaic monitoring data has characteristics such as quantity is big, and the kind is many, and data structure is complicated, traditional photovoltaic information acquisition device is difficult to well adapt to the demand of this scene.
Disclosure of Invention
According to the technical shortcomings, the invention provides a distributed photovoltaic power station information acquisition and monitoring device, which has the structure as follows: mainly comprises a hardware system and a software system;
the hardware system is realized based on an industrial embedded core board of a 32-bit ARM9 microprocessor, and consists of a core board, a power management unit, a clock management unit, a storage unit, a liquid crystal display unit and a peripheral interface unit:
the core board takes an ARM9 microprocessor as a main chip, a 64KB ROM, a 32KB SRAM and a 32-bit expansion bus are arranged in the main chip, and the main frequency can reach 133MHz at the highest;
the power management unit takes 12V as the input of a main power supply and a standby power supply, and realizes the functions of converting 12V into 5V, converting 5V into 4V and converting 5V into 3.3V through the power conversion circuit, so that other units of the hardware system can be powered;
the clock unit adopts a crystal oscillator with a temperature compensation function, and can realize the temperature compensation functions of different intervals through corresponding compensated control bits, thereby greatly improving the precision of the clock;
the storage unit comprises 256M SDRAM,2G NANDFLASH and SD card storage modules;
the peripheral interface unit is provided with 2 paths of network ports, 6 paths of RS485 ports, 1 path of USB and 1 path of RS232;
the software system is divided into 3 layers, namely a system supporting layer, a service supporting layer and an application layer:
the system supporting layer is a bottom layer foundation of the whole device and provides basic system services for the business supporting layer and the application layer, and the system supporting layer comprises a task scheduling module, a system monitoring module, a power monitoring management module and an alarm management module:
the task scheduling module is responsible for registration, interface call and cancellation management of the system subtasks, provides cyclic call service and timing call service for the system subtasks, manages global system resources at the same time, and reasonably schedules the utilization of the global system resources by the system subtasks;
the system monitoring module monitors the running state of the system subtasks in real time, processes abnormal conditions occurring during the running of the system subtasks, and restarts the abnormal system subtasks;
the power supply monitoring management module monitors the power supply state of the two-way power supply in real time, gives an alarm prompt for the power supply abnormality of any one-way power supply, starts the power supply of the super capacitor arranged in the terminal when the power supply abnormality occurs at the same time, and informs the system of the operation stopping and access operation of the subtasks, so that the system can not lose data or process errors under the emergency power failure condition;
the alarm management module processes various alarm information in the system, including internal abnormal alarms, external equipment abnormal alarms, power supply abnormal alarms, downlink communication abnormal alarms, uplink communication abnormal alarms and the like, and triggers corresponding processing actions according to the alarm level and the alarm source;
the service support layer integrates various communication resources and data resources of the system, provides unified communication interface service and data management service for an upper application layer, and comprises a communication management module and a database management module:
the communication management module manages operations of creating, canceling, sending data, receiving data and the like of all communication interfaces in the device, wherein all communication interfaces comprise serial ports, ethernet, GPRS/4G and the like;
the database management module is responsible for creating, deleting, adding and modifying the business database and providing a unified database operation interface;
the application layer is a main service application embodiment of the device and comprises a data uploading communication module, a downlink data acquisition module, a data statistics management module and a remote maintenance management module:
the data uploading communication module manages the communication flow of all registered master stations in the terminal, including establishment of a master station channel, maintenance of the communication flow with the master station, analysis of a master station communication protocol and disconnection of the master station channel;
the downlink data acquisition module is responsible for data acquisition of all registered measurement points in the terminal, and comprises establishment of acquisition channels of all measurement points, framing and analysis of an acquisition message and disconnection of the acquisition channels;
the data statistics management module uniformly manages all collected data in the terminal, and analyzes and counts the operation data of the whole power station according to the relevance among the operation data of each device;
the remote maintenance management module adopts a configuration framework based on an XML technology and is responsible for the interaction with the maintenance software of the upper computer, and the upper computer request sent by the maintenance communication port is monitored in real time and fed back in time.
All chips in the device are industrial products, and are real full-industrial products, so that the distributed photovoltaic power station information acquisition and monitoring device has the characteristics of large storage capacity, high reliability, good stability, strong real-time performance and the like, and can support a mainstream operating system and realize data acquisition, storage and remote transmission of various different types of equipment in a new energy station through various communication modes.
The device is provided with 6 paths of RS485 interfaces, 2 paths of Ethernet interfaces and 1 path of GPRS/4G channels, adopts a multi-protocol acquisition module, supports various uplink and downlink communication protocols, and simultaneously embeds communication protocols of field devices of a power station, so that interface conversion and protocol conversion can be realized;
the downlink communication protocol comprises MODBUS-TCP, MODBUS-RTU, DL/T645 (version 07 and version 97), wipe, DLMS, IEC1107, EDMI and the like, and can be extended according to the field requirements;
the uplink communication protocol comprises IEC870-104, IEC870-102, Q/GDW 1376.1-2013 and the like, and can be expanded according to the field requirements.
The collected data comprise inverter operation data, combiner box operation data, box transformer operation data, high-voltage cabinet operation data, electric energy meter operation data and the like:
the inverter operation data comprise direct-current side voltage, current and power, and alternating-current side voltage, current, power factor, frequency, temperature, date, generated energy and the like;
the bus box operation data comprise input voltage, branch input current, bus voltage, direct current bus voltage, total power, component state, alarm and the like;
the box transformer operation data comprise a switch state, an alarm state, three-phase voltage/current, active power, reactive power and the like;
the high-voltage cabinet operation data comprise three-phase voltage/current, zero-sequence voltage/current, frequency, switch state, protection state, alarm, fault and the like;
the operation data of the electric energy meter comprises total electric quantity, time-sharing electric quantity, quadrant reactive power, maximum required quantity, instantaneous voltage/current/power/factor, voltage loss, last month end code, last month required quantity, load curve and the like;
the device adopts wall-hanging structural design, adopts reliable power supply design, simple to operate and possess high environmental adaptation ability:
wall-mounted structure, length x width x height: 270mm multiplied by 183mm multiplied by 90mm, the sealing design, the ABS waterproof ultraviolet-proof flame-retardant material accords with the IP54 protection standard;
two paths support the simultaneous power supply of alternating current and direct current and support reliable automatic switching; the input range of the alternating current power supply voltage is 100V-260V, and the input range of the direct current power supply voltage is 100V-300V;
the relative humidity range of normal work is 5% -95%;
normal working temperature range is-40 ℃ to +70 ℃; the limit working temperature ranges from-45 ℃ to +85 ℃, and the device can work normally in severe geographical environments such as highland, severe cold and the like.
The method and the device for acquiring the information based on the XML technology utilize the characteristics of the XML technology that all platforms are universal, good in portability, strong in readability, good in expandability and the like, and unify the acquired equipment and the related information of the acquired quantity on site into an XML configuration file, so that the acquisition configuration on site is simple and easy to read, and the accuracy and the high efficiency of the on-site configuration are ensured.
The principle and the application method of the invention are as follows: the downlink data acquisition module acquires equipment data in the distributed power station through an RS485 or Ethernet interface at fixed time intervals in a plurality of local communication modes, wherein the equipment data comprises data of an inverter, a combiner box, a box transformer, a high-voltage cabinet and an electric energy meter, the acquired data is statistically analyzed through a data statistics management module, the statistically analyzed data is stored in the data management module, and the statistically analyzed data is uploaded to a remote master station or a third party application through an uploading communication module, so that the data information acquisition and storage functions of the system are completed; the uploading communication module transmits the data of statistical analysis to the communication management module, the task scheduling module, the system monitoring module, the alarm management module and the power monitoring management module receive the data information of the communication management module, if abnormal information exists, the task scheduling module, the system monitoring module, the alarm management module and the power monitoring management module react the monitoring adjustment information to the remote maintenance management module through the communication management module and the uploading communication module, and the remote maintenance management module performs corresponding maintenance processing to complete the monitoring of the system.
The invention has the beneficial effects that: the data timeliness checking technology, the data integrity checking technology and the data self-repairing technology which are suitable for the distributed photovoltaic power station total station data monitoring are adopted, so that the acquired data are ensured to have timeliness, integrity and accuracy. The device can improve the accuracy of the output power prediction of the distributed power station through the collection and uploading of the full information of the distributed photovoltaic power station, is convenient for the adjustment of the power grid load, provides support for optimizing the dispatching operation of the renewable energy system and the development and construction layout of new energy, effectively relieves the light discarding condition, improves the resource utilization efficiency, promotes the continuous healthy development of the renewable energy industry and provides assistance for the power grid system to which the distributed power supply is connected. By combining the monitoring data characteristics of the distributed photovoltaic power station, the bottleneck of the prior art is broken through by adopting special data classification, data storage and data transmission technologies, the collection, storage and analysis of the total data of the distributed photovoltaic power station are realized, and stable and reliable data support is provided for the supervision, the dispatching and the operation and the maintenance of the distributed photovoltaic power station.
Drawings
FIG. 1 is a diagram of a software architecture of the present invention;
FIG. 2 is a hardware schematic of the present invention;
FIG. 3 is a flow chart of information according to the present invention;
FIG. 4 is a flow chart of the present invention;
fig. 5 is a view of an application scenario of the present invention.
Detailed Description
Embodiment 1, as shown in fig. 1, is a software structure diagram of a device for collecting and monitoring information of a distributed photovoltaic power station, where the whole software is divided into 3 layers, namely a system supporting layer, a service supporting layer and an application layer.
The system support layer is a bottom layer foundation of the whole device and provides basic system services for the business support layer and the application layer, and the system support layer comprises a task scheduling module, a system monitoring module, a power supply monitoring management module and an alarm management module, wherein the task scheduling module is responsible for registration, interface call and logout management of system subtasks, provides cyclic call service and timing call service for the system subtasks, manages global system resources at the same time and reasonably arranges the utilization of the global system resources by the system subtasks; the system monitoring module monitors the running state of the system subtasks in real time, processes abnormal conditions occurring during the running of the system subtasks, and restarts the abnormal system subtasks; the power supply monitoring management module monitors the power supply state of the two-way power supply in real time, gives an alarm prompt for the power supply abnormality of any one-way power supply, starts the power supply of the super capacitor arranged in the terminal when the power supply abnormality occurs at the same time, and informs the system of the operation stopping and access operation of the subtasks, so that the system can not lose data or process errors under the emergency power failure condition; the alarm management module processes various alarm information in the system, including internal abnormal alarm, external equipment abnormal alarm, power supply abnormal alarm, downlink communication abnormal alarm, uplink communication abnormal alarm and the like, and triggers corresponding processing actions according to the alarm level and the alarm source.
The service support layer integrates various communication resources and data resources of the system, provides unified communication interface service and data management service for an upper application layer, and comprises a communication management module and a database management module. The communication management module manages operations such as creation, cancellation, data sending, data receiving and the like of all communication interfaces in the device, including serial ports, ethernet, GPRS/4G and the like; the database management module is responsible for creating, deleting, adding and modifying the business database and provides a unified database operation interface.
The application layer is a main business application embodiment of the device and comprises a data uploading communication module, a downlink data acquisition module, a data statistics management module and a remote maintenance management module. The data uploading communication module manages the communication flow of all registered master stations in the terminal, including establishment of a master station channel, maintenance of the communication flow with the master station, analysis of a master station communication protocol and disconnection of the master station channel; the downlink data acquisition module is responsible for data acquisition of all registered measurement points in the terminal, and comprises establishment of acquisition channels of all measurement points, framing and analysis of an acquisition message and disconnection of the acquisition channels; the data statistics management module uniformly manages all collected data in the terminal, and analyzes and counts the operation data of the whole power station according to the relevance among the operation data of each device; the remote maintenance management module adopts a configuration framework based on an XML technology and is responsible for the interaction with the maintenance software of the upper computer, and the upper computer request sent by the maintenance communication port is monitored in real time and fed back in time.
As shown in FIG. 2, the hardware structure diagram of the distributed photovoltaic power station information acquisition and monitoring device is realized by an industrial embedded core board based on a 32-bit ARM9 microprocessor, and the whole hardware system consists of the core board, a power management unit, a clock management unit, a storage unit, a liquid crystal display unit and a peripheral interface unit. The core board takes an ARM9 microprocessor as a main chip, and a 64KB ROM, a 32KB SRAM and a 32-bit expansion bus are arranged in the main chip, wherein the main frequency can reach 133MHz at the highest. The power management unit takes 12V as the input of a main power supply and a standby power supply, and the functions of converting 12V into 5V, converting 5V into 4V and converting 5V into 3.3V are realized through the power conversion circuit, so that power can be supplied to other units of the hardware system. The clock unit adopts a crystal oscillator with a temperature compensation function, and can realize the temperature compensation functions of different intervals through corresponding compensated control bits, thereby greatly improving the precision of the clock. The memory unit comprises 256M SDRAM,2G NANDFLASH and SD card memory module. The peripheral interface unit is provided with 2 paths of network ports, 6 paths of RS485 ports, 1 path of USB and 1 path of RS232. All chips in the device are industrial products, and are real full-industrial products, so that the distributed photovoltaic power station information acquisition and monitoring device has the characteristics of large storage capacity, high reliability, good stability, strong real-time performance and the like, and can support a mainstream operating system and realize data acquisition, storage and remote transmission of various different types of equipment in a new energy station through various communication modes.
As shown in fig. 3, which is an information flow chart of a device for collecting and monitoring information of a distributed photovoltaic power station, a downlink data collecting module collects equipment data in the distributed power station through an RS485 or ethernet interface at fixed time intervals in various local communication modes, the collected data comprises data of an inverter, a combiner box, a box transformer, a high-voltage cabinet and an electric energy meter, the collected data is statistically analyzed through a data statistics management module, the statistically analyzed data is stored in the data management module, and the statistically analyzed data is uploaded to a remote master station or a field station or a third party application through an uploading communication module, and the like, so that the data information collection and storage functions of the system are completed; the uploading communication module transmits the data of statistical analysis to the communication management module, the task scheduling module, the system monitoring module, the alarm management module and the power monitoring management module receive the data information of the communication management module, if abnormal information exists, the task scheduling module, the system monitoring module, the alarm management module and the power monitoring management module react the monitoring adjustment information to the remote maintenance management module through the communication management module and the uploading communication module, and the remote maintenance management module performs corresponding maintenance processing to complete the monitoring of the system.
As shown in fig. 4, in a service flow chart of a device for collecting and monitoring information of a distributed photovoltaic power station, a downlink data collecting module collects equipment data in the distributed power station through an RS485 or ethernet interface at fixed time intervals, and the equipment data comprises an inverter, a combiner box, a box transformer, a high-voltage cabinet and an electric energy meter; the data statistics management module is used for statistically analyzing the original data acquired by the downlink communication module and sending the analysis structure to the uplink communication module; the data uploading communication module waits for request data sent by the master station through the GPRS/4G or Ethernet interface, and extracts the data from the data statistics module to respond to the request party.
As shown in fig. 5, an application scenario diagram of a device for collecting and monitoring information of a distributed photovoltaic power station is shown, in this scenario, the device for collecting and monitoring information of a distributed photovoltaic power station is deployed in the distributed photovoltaic power station, and operational data (including data such as a photovoltaic inverter, a combiner box, a box transformer, a high-voltage cabinet, a weather station, etc.) in the photovoltaic power station is collected and stored on the one hand through various local communication modes, and meanwhile, the operational data is uploaded to a remote master station (a station/a third party application, etc.) through an uplink communication mode, so that the data collection/storage function of the system is completed.
Claims (6)
1. The utility model provides a distributed photovoltaic power plant information acquisition and device of control which characterized in that: mainly comprises a hardware system and a software system;
the hardware system is realized based on an industrial embedded core board of a 32-bit ARM9 microprocessor and comprises a core board, a power management unit, a clock management unit, a storage unit, a liquid crystal display unit and a peripheral interface unit:
the core board takes an ARM9 microprocessor as a main chip, a 64KB ROM, a 32KB SRAM and a 32-bit expansion bus are arranged in the main chip, and the main frequency can reach 133MHz at the highest;
the power supply management unit takes 12V as the input of a main power supply and a standby power supply, and realizes the functions of converting 12V into 5V, converting 5V into 4V and converting 5V into 3.3V through the power supply conversion circuit, so as to supply power to other units of the hardware system;
the clock unit adopts a crystal oscillator with a temperature compensation function, and realizes the temperature compensation functions of different intervals through corresponding compensated control bits;
the storage unit comprises 256M SDRAM,2G NANDFLASH and SD card storage modules;
the peripheral interface unit is provided with 2 paths of network ports, 6 paths of RS485 ports, 1 path of USB and 1 path of RS232;
the software system is divided into 3 layers, including a system supporting layer, a business supporting layer and an application layer:
the system supporting layer is a bottom layer foundation of the whole device and provides basic system services for the business supporting layer and the application layer, and the system supporting layer comprises a task scheduling module, a system monitoring module, a power monitoring management module and an alarm management module:
the task scheduling module is responsible for registration, interface call and cancellation management of the system subtasks, provides cyclic call service and timing call service for the system subtasks, manages global system resources at the same time, and reasonably schedules the utilization of the global system resources by the system subtasks;
the system monitoring module monitors the running state of the system subtasks in real time, processes abnormal conditions occurring during the running of the system subtasks, and restarts the abnormal system subtasks;
the power supply monitoring management module monitors the power supply state of the two-way power supply in real time, gives an alarm prompt for the power supply abnormality of any one-way power supply, starts the power supply of the super capacitor arranged in the terminal when the power supply abnormality occurs at the same time, and informs the system of the operation stopping and access operation of the subtasks, so that the system can not lose data or process errors under the emergency power failure condition;
the alarm management module processes various alarm information in the system, including internal abnormal alarm, external equipment abnormal alarm, power supply abnormal alarm, downlink communication abnormal alarm and uplink communication abnormal alarm of the system, and triggers corresponding processing actions according to the alarm level and the alarm source;
the service support layer integrates various communication resources and data resources of the system, provides unified communication interface service and data management service for an upper application layer, and comprises a communication management module and a database management module:
the communication management module manages the operations of creating, canceling, sending data and receiving data of all communication interfaces in the device, wherein all communication interfaces comprise serial ports, ethernet and GPRS/4G;
the database management module is responsible for creating, deleting, adding and modifying the business database and providing a unified database operation interface;
the application layer is a main service application embodiment of the device and comprises a data uploading communication module, a downlink data acquisition module, a data statistics management module and a remote maintenance management module:
the data uploading communication module manages the communication flow of all registered master stations in the terminal, including establishment of a master station channel, maintenance of the communication flow with the master station, analysis of a master station communication protocol and disconnection of the master station channel;
the downlink data acquisition module is responsible for data acquisition of all registered measurement points in the terminal, and comprises establishment of acquisition channels of all measurement points, framing and analysis of an acquisition message and disconnection of the acquisition channels;
the data statistics management module uniformly manages all collected data in the terminal, and analyzes and counts the operation data of the whole power station according to the relevance among the operation data of each device;
the remote maintenance management module adopts a configuration framework based on an XML technology, is responsible for the interaction with the maintenance software of the upper computer, monitors the upper computer request sent by the maintenance communication port in real time and feeds back the request in time;
the downlink data acquisition module acquires equipment data in the distributed power station through an RS485 or Ethernet interface at fixed time intervals in a plurality of local communication modes, wherein the equipment data comprises data of an inverter, a combiner box, a box transformer, a high-voltage cabinet and an electric energy meter, the acquired data is statistically analyzed through a data statistics management module, the statistically analyzed data is stored in the data management module, and the statistically analyzed data is uploaded to a remote master station or a third party application through an uploading communication module to complete the data information acquisition and storage function of the system; the uploading communication module transmits the data of statistical analysis to the communication management module, the task scheduling module, the system monitoring module, the alarm management module and the power monitoring management module receive the data information of the communication management module, if abnormal information exists, the task scheduling module, the system monitoring module, the alarm management module and the power monitoring management module react the monitoring adjustment information to the remote maintenance management module through the communication management module and the uploading communication module, and the remote maintenance management module performs corresponding maintenance processing to complete the monitoring of the system.
2. The device for information collection and monitoring of a distributed photovoltaic power station according to claim 1, wherein: all chips in the device are industrial products, a mainstream linux operating system is supported, and data acquisition, storage and remote transmission of various different types of equipment in the new energy station can be realized through various communication modes.
3. The device for information collection and monitoring of a distributed photovoltaic power station according to claim 1, wherein: the interface type is provided with 6 paths of RS485 interfaces, 2 paths of Ethernet interfaces and 1 path of GPRS/4G channels, a multi-protocol acquisition module is adopted to support various uplink and downlink communication protocols, and meanwhile, communication protocols of field equipment of the power station are embedded, so that interface conversion and protocol conversion can be realized; the downlink communication protocol comprises MODBUS-TCP, MODBUS-RTU, DL/T64507 edition or DL/T64597 edition, weak, DLMS, IEC1107 and EDMI, and can be extended according to field requirements; the uplink communication protocol comprises IEC870-104, IEC870-102 and Q/GDW 1376.1-2013, and can be expanded according to field requirements.
4. The device for information collection and monitoring of a distributed photovoltaic power station according to claim 1, wherein: the collected data comprise inverter operation data, combiner box operation data, box transformer operation data, high-voltage cabinet operation data and electric energy meter operation data:
the inverter operation data comprise direct-current side voltage, current and power, and alternating-current side voltage, current, power factor, frequency, temperature, date and generating capacity;
the bus box operation data comprise input voltage, branch input current, bus voltage, direct current bus voltage, total power, component state and alarm;
the box transformer operation data comprise a switch state, an alarm state, three-phase voltage/current, active power and reactive power;
the high-voltage cabinet operation data comprise three-phase voltage/current, zero-sequence voltage/current, frequency, switch state, protection state, alarm and fault;
the electric energy meter operation data comprise total electric quantity, time-sharing electric quantity, quadrant reactive power, maximum required quantity, instantaneous voltage/current/power factor, voltage loss, last month end code, last month required quantity and load curve.
5. The device for information collection and monitoring of a distributed photovoltaic power station according to claim 1, wherein: the device structure adopts wall-hanging structural design, adopts reliable power supply design, simple to operate and possess high environmental adaptation ability:
wall-mounted structure, length x width x height: 270mm multiplied by 183mm multiplied by 90mm, the sealing design, the ABS waterproof ultraviolet-proof flame-retardant material accords with the IP54 protection standard;
two paths support the simultaneous power supply of alternating current and direct current and support reliable automatic switching; the input range of the alternating current power supply voltage is 100V-260V, and the input range of the direct current power supply voltage is 100V-300V;
the relative humidity range of normal work is 5% -95%;
normal working temperature range is-40 ℃ to +70 ℃; the limit working temperature ranges from-45 ℃ to +85 ℃.
6. The device for information collection and monitoring of a distributed photovoltaic power station according to claim 1, wherein: the information acquisition is based on an information configuration mode of an XML technology.
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| CN115347619B (en) * | 2022-10-20 | 2023-03-03 | 北京智盟信通科技有限公司 | Intelligent monitoring terminal for distributed photovoltaic |
| CN116743802A (en) * | 2023-06-05 | 2023-09-12 | 广州市方瞳科技有限责任公司 | On-site data acquisition device based on long-term memory recurrent neural network |
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