Public Monitoring and Control Screen: A Key Tool for Enhancing Operational Efficiency in Photovoltaic Power Plants

Published on March 11, 2025, by Shanghai Changgao Jibao Technology

The public monitoring and control screen developed by Shanghai Changgao Jibao integrates 12 types of electrical parameter collection modules, including voltage, current, and power. This technology allows for the visualization of the operational status of equipment in both centralized and distributed photovoltaic power plants. For instance, in a 50 MW agricultural-photovoltaic complementary project, the operations and maintenance team utilized the screen’s temperature anomaly warning feature to detect a cooling failure in the inverter three days in advance. This timely detection helped avoid a daily loss of approximately 12,000 yuan in electricity generation, showcasing the significant role of the public monitoring and control screen in real-time equipment status monitoring and fault prevention.

Intelligent Alarm and Fault Location: The Operational Hub

This system can automatically identify up to 32 types of abnormal operating conditions, including common and impactful issues such as module hot spots and grounding faults in combiner boxes. In a photovoltaic power plant in Shandong, there was a sudden drop in the current of a branch circuit. The monitoring and control screen played a crucial role by quickly pinpointing the issue—a blown fuse in the third branch of the seventh array—within just 10 minutes through historical data comparison. This method increased efficiency by eight times compared to traditional manual troubleshooting, significantly reducing downtime and associated losses.

Remote Control and Energy Efficiency Optimization Platform

The public monitoring and control screen is equipped with a communication module that supports the MODBUS/104 protocol, enabling seamless integration with the dispatch control center. In a distributed photovoltaic project in Jiangsu, maintenance personnel used the monitoring screen to remotely adjust the power factor of 12 grid connection points. This adjustment reduced the overall line loss rate from 3.7% to 2.1%, resulting in annual savings of over 150,000 yuan in operation and maintenance costs. This demonstrates that the public monitoring and control screen not only facilitates remote control but also optimizes energy efficiency, effectively lowering operational costs.

Modular Design Advantages for Various Scenarios

The monitoring and control units utilize a drawer-type structural design that offers significant advantages. It can flexibly configure between 4 to 48 collection channels, adequately meeting the needs of specialized scenarios such as rooftop distributed and water surface photovoltaic setups. For example, in a fishing-photovoltaic complementary project in Zhejiang, a moisture-proof monitoring screen was custom-designed to withstand humidity levels reaching 98% during the rainy season. Remarkably, this device has maintained zero-failure operation for three years since it was put into service, demonstrating its reliability and adaptability in challenging environments.

Data-Driven Preventive Maintenance: A New Paradigm

The public monitoring and control screen incorporates a Long Short-Term Memory (LSTM) neural network algorithm that predicts component degradation trends based on historical data. In a large ground-mounted solar power station in Inner Mongolia, maintenance personnel analyzed the insulation resistance change curve provided by the monitoring screen to establish a component cleaning schedule six months in advance. This proactive measure resulted in a 2.3% increase in annual energy output and extended the lifespan of the equipment by 1.8 years. This illustrates how the public monitoring and control screen facilitates data-driven preventive maintenance, significantly supporting the long-term stable operation and economic benefits of the power station.

Key Technical Features of the Photovoltaic Public Monitoring and Control Screen

• Powerful Data Processing Capability: It employs an industrial-grade ARM processor, enabling data processing speeds in the millisecond range, which ensures prompt support for operational decision-making.
• Reliable Power Supply: The system features a dual power redundancy system that allows operation for up to 72 hours even during power outages, maintaining continuous monitoring and control.
• Excellent Environmental Adaptability: With IP65 protection certification, the device can operate effectively in extreme conditions ranging from -40℃ to +85℃, ensuring stable performance in both cold and hot climates.
• Good System Compatibility: It supports data integration with SCADA and EMS systems, facilitating collaboration with other power plant management systems for data sharing and comprehensive utilization.

In summary, the public monitoring and control screen presents a vital advancement in the operational efficiency of photovoltaic power plants, leveraging technology to enhance monitoring capabilities, prevent faults, and optimize energy performance.