Photovoltaic solar power systems (solar photovoltaic power systems) convert sunlight into electricity via photovoltaic panels; the generated power is either fed into the grid through inverters or stored in batteries. Composed of photovoltaic modules, combiner boxes and inverters, these systems are clean and renewable.
In April 2025, Beijing Antongni Electronic Technology Co., Ltd. undertook the supply of all secondary equipment for the 3MW rooftop solar project at Hebei Tiefeng Environmental Protection Science and Technology Park. The company delivered a complete distributed PV monitoring system and supporting devices. On April 28, communication debugging with municipal and county dispatch centers was successfully finished, enabling smooth grid connection. The project strictly met the client’s critical April 30 grid-connection deadline and won high recognition from the customer.
Products Provided for Rooftop Photovoltaic Solar Power Systems
In this project, Antongni provided the following products:
- Distributed PV Monitoring System
- Telecontrol Communication Panel: Including an all-in-one grid-connection communication device, protocol conversion device, common control and measurement device, and longitudinal encryption authentication device.
- Clock Synchronization System Panel: Including two clock synchronization devices.
- Anti-islanding Protection and Power Quality Panel: Including one anti-islanding protection device and one power quality online monitoring device.
- Solar Power Prediction System
- Primary Frequency Regulation System
- Integrated Power Supply System
- Collector Line Protection and Grid-connection Line Protection Devices
Implementation Status
Throughout the project implementation, the Antongni team demonstrated admirable professionalism and accountability.
- Pre-sales Technical Support: The technical team engaged in exhaustive communication with the client and the design institute across all stages—from grid-connection planning and technical implementation to blueprint design—fully showcasing their expertise.
- Delivery Assurance: Faced with the “430” grid-connection deadline, short-term orders, and tight delivery schedules, Antongni’s delivery team responded rapidly. Leveraging strong resource integration, professional R&D technology, and efficient on-site service, the team worked through the night to provide a solid guarantee for the project’s successful grid connection.
III. Core Products
- ATN-2000P Distributed PV Monitoring System: Utilizing an advanced architecture, it collects real-time data such as power generation and voltage for intelligent management through analysis. Its stable performance improves management efficiency and reliability, enabling timely detection of equipment hazards to reduce downtime and ensure stable power station operation.
- ASM-6101H All-in-one Grid-connection Communication Device: This device precisely meets the power grid’s “Four Controllables” requirements. Through efficient communication links, it accurately uploads generation data and receives dispatch instructions while flexibly adjusting generation power to ensure safe and stable grid connection.
IV. User Recognition
Despite challenges such as short-term ordering and urgent delivery and debugging requirements, the Antongni team responded swiftly and worked tirelessly. Their efforts ensured the project was successfully connected to the grid before the “430” deadline, earning them high praise and recognition from the user.
Conclusion
Secondary protection equipment for photovoltaic power generation primarily includes: microprocessor-based protection devices (overcurrent, overvoltage, and zero-sequence protection), anti-islanding protection devices, fault disconnection devices, online power quality monitoring devices, substation measurement and control devices, telecontrol communication panels, dispatch data network equipment, secondary security panels, GPS time synchronization devices, and backend monitoring systems. Together, these components provide monitoring, protection, communication, and dispatch functions.
Our company boasts rich engineering experience and mature, reliable one-stop supporting solutions for all types of photovoltaic power generation projects.
We fully cover full-process supporting matching services for small and medium-sized distributed photovoltaic stations and large-scale centralized grid-connected photovoltaic power plants. Project design, secondary equipment supporting, protection relay selection and whole-station debugging are all available.
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