PV Station inverter Data Acquisition Intelligent communication terminal

https://zhuanlan.zhihu.com/p/2011820117302989869
As a professional provider of IoT data acquisition solutions and an expert in industrial IoT data acquisition, the editor of Shanghai Data Acquisition IOT Technology Co., Ltd， (daq-iot) hereby presents the following introduction, and sincerely welcomes discussions and exchanges.
Supported Communication Interfaces: CAN, RS485, Mbus, 4–20mA, Profibus, CC-Link, HART, digital I/O, etc.
Industrial Protocols: Modbus RTU/TCP, HJ212, IEC104, DLT645, DLMS, IEC61850, MQTT, etc.
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Preface

Thank you for choosing Shanghai DAQ-IoT, which is developed and produced by Shanghai DAQ-IoT Network Technology Co., LtdPV InverterData AcquisitionIntelligent Communication Terminal(Model: DAQ-GP-PV inverter). This product is a high-performancePVand communication device designed specifically for the power generation field. It can achieve the collection, caching, encrypted transmission, and remoteO&Mof inverter operation data. It is widely used indistributed PV power stationCentralized PV power stationWaiting for scenarios to assist the efficient, stable, and safe operation of thePVsystem.

This manual provides a detailed introduction to the product's functional features, technical parameters, installation and debugging, operation and use, and troubleshooting, aiming to provide you with comprehensive usage guidance. Please read this manual carefully before installing and operating this product to ensure proper use and avoid equipment damage or functional abnormalities caused by improper operation.

Our company reserves the right to upgrade and optimize the technical parameters and functional design of the product. If there are slight differences between the actual situation of the product and the manual, the actual product shall prevail without further notice. If you have any questions or need technical support, please contact our after-sales service department.

1. Product Overview 1.1 Product Introduction DAQ-GP-PV inverter type PV inverter Data Acquisition intelligent communication terminal (hereinafter referred to as "terminal") is an intelligent terminal device developed by Shanghai DAQ-IoT Network Technology Co., Ltd. in response to the needs of the State Grid PV field, based on years of IoT Data Acquisition experience. This terminal can be connected to various mainstream brands of inverters through multiple interfaces.PVcollects the operating parameters, power generation data, fault information, etc. of the inverters, and uploads the data through wired or wireless communicationPV Cloud Monitoring PlatformLocal SCADA monitoring system or remote locationPower dispatch systemAt the same time, it supports remote configuration, parameter issuance, and fault alarm functions, providing accurate and efficient data support for the management ofO&M. The terminal adopts a modular design, with strong compatibility and high stability. It has functions such as data encryption, breakpoint continuation, and local caching, which can adapt to complex outdoor industrial environments and meet the collection and communication needs of different scales ofPV power station, helping to achieve intelligent and refined management of thePVsystem. 1.2 Execution Standards This product is designed, produced, and inspected strictly in accordance with the following national and industry standards to ensure that product performance meets relevant regulatory requirements:
2. DL/T698.31-2010 "Electric Energy Information Collection and Management System Part 3-1 Technical Specification for Electric Energy Information Collection Terminals - General Requirements"
3. DL/T698.35-2010 "Electric Energy Information Collection and Management System Part 3-5 Technical Specification for Electric Energy Information Collection Terminals - Special Requirements for Low Voltage Centralized Meter Reading Terminals"
4. Q/GDW1375.3-2013 "Type Specification for Electric Power User Information Collection System Part 3: Collector Type Specification"
5. Q/GDW1374.2-2013 "Technical Specification for Power User Electricity Information Collection System Part 2: Technical Specification for Centralized Meter Reading Terminal"
6. Object oriented Communication for Electricity Information Collection Protocol
7. Technical Specification for Low Voltage Power Line Broadband Carrier Communication Interconnection Series 1.3 Applicable Scenarios This terminal is suitable for inverters and communication of various types ofPV power station. The main application scenarios include:
8. PV(Residential, Industrial and Commercial Rooftop System)
9. Centralized PV power station
10. PV Poverty Alleviation Power Station
11. Integrated photovoltaic storage and charging power station
12. Other scenarios that require PV inverter to undergo Data Acquisition and Remote Monitoring
13. Product features 2.1 Collection Function Characteristics
14. Multi brand compatibility: Supports mainstream inverter manufacturers such as Jinlang, Guriwatt, Gudewei, Huawei, Outai, Sunac, Chint, Sanjing, etc. It is compatible with proprietary inverters and standard industrial inverters, with strong adaptability.
15. Full parameter acquisition: It can Real-time collect various core parameters of the inverter, such as input voltage, input current, output voltage, output current, power generation, power factor, inverter temperature, fault codes, operating status, etc. The sampling frequency can reach seconds, and the acquisition accuracy is high.
16. Multi interface acquisition: equipped with 4 channelsRS485 interface(Scalable), supports RS485/422 communication mode, can simultaneously connect multiple inverters, with a suitable number of 6-8 serial ports per channel, and it is recommended to connect devices of the same type to meet large-scale data collection needs.
17. Data caching function: Built in high-capacity Hardware storage chip, supports local data caching, cache capacity can be configured according to needs, when communication is interrupted, historical data can be cached, and automatically uploaded after communication is restored to avoid data loss. 2.2 Communication Function Characteristics
18. Multiple communication methods: Supports 5G/4G wireless communication, wired Ethernet, WiFi and other communication methods, which can be flexibly selected according to the on-site environment to achieve stable connection with the monitoring platform; Simultaneously supporting Bluetooth communication for easy on-site maintenance and debugging.
19. Multiple Protocol support: Supports MODBUSIEC60870-5-101、 Multiple power protocols such as IEC60870-5-104, DL/T 645, and industrialProtocolcan seamlessly integrate withPVcloud platforms, SCADA monitoring systems, and power dispatch systems to achieve bidirectional data transmission.
20. Communication Security: Built inState Grid encryption chipAdopting AES 128 bit encryption, MD5 authentication, and SM2 encryption algorithm to ensure the security of data transmission and prevent data leakage and tampering; Support IPsec VPN to build dual protection and block illegal access.
21. Communication parameter customization: Supports custom settings for communication baud rate, verification method, data bit, stop bit, and other parameters. The default baud rate is 9600bps, and the verification method is no verification, 8-bit data bit, and 1-bit stop bit. It can adapt to the speed of the inverter 485 interface and achieve automatic serial port matching. 2.3 O&M Management Features
22. Remote O&M: Supports remote configuration, parameter issuance FOTA、 Troubleshooting and other functions, without the need for on-site operation, reduce the cost ofO&Mand improve its efficiency.
23. Fault alarm: When the inverter malfunctions or the terminal itself experiences communication or power supply abnormalities, an alarm signal can be sent out Real-time and the alarm information can be uploaded to the monitoring platform. It also supports local indicator light alarms for quick problem detection.
24. Logging: Supports comprehensive event logging function, which can record operation events, running logs, interaction instructions, alarm information, etc. The logs can be exported for easy event tracing and problem analysis.
25. Edge Computing Capability: Based on high-performance embedded processors, supporting Python secondary development, it can achieve Edge Computing analysis, intelligent strategy construction, dynamic adjustment and other functions, meeting personalized O&M needs. 2.4 Structure and Environmental Characteristics
26. Easy installation: Adopting DIN35 standard guide rail installation, the structure is compact, the volume is small, the installation is convenient and reliable, and it can be directly installed in the distribution box.
27. Robust and durable: The shell is made of PC plastic, with good impact resistance, aging resistance and dust-proof performance. The protection level reaches IP21, and it is suitable for outdoor industrial environment.
28. Wide temperature adaptation: The working temperature range is -25 ℃~70 ℃, the maximum temperature is -40 ℃~70 ℃, the relative humidity is 10%~100% (no condensation), and it can operate stably in harsh environments.
29. Low power design: The working power consumption is less than 5W, which is energy-saving and environmentally friendly, and reduces the operating cost of the power station.