Most of the ground photovoltaic power stations are located in wasteland, subsidence area, tailings site, agricultural and photovoltaic complementary land. The site is open and the environment is complex, which is vulnerable to sand, rainstorm, snow, weeds and other external factors. Standardized operation and maintenance management are crucial to ensure long-term stable output of power stations, extend equipment lifespan, and maintain safety production bottom lines. Industry operation and maintenance experts remind that the operation and maintenance of ground photovoltaic power stations should adhere to the principle of "prevention first, intelligent inspection, and safety priority", and focus on daily inspections, hidden danger management, and seasonal protection.
In the daily inspection process, the ground power station implements a combination of remote monitoring and on-site verification. Relying on the intelligent operation and maintenance platform to monitor the string current, power generation, and equipment alarm information 24 hours a day, timely capture abnormal power generation curves; At the same time, regular on-site inspections can be carried out, which can be combined with unmanned aerial vehicle infrared thermal imaging inspections to quickly identify hidden faults such as component hot spots, hidden cracks, and junction box heating. Focus on checking the foundation of the photovoltaic bracket for settlement, tilt, rust, and tightening loose bolts; Check the operation status of the combiner box, inverter, cable joints, and grounding devices to eliminate the risks of virtual connection and leakage. For the complementary projects of agricultural and mineral light, it is also necessary to regularly clean the weeds inside the array to prevent excessive vegetation from blocking components and causing fire hazards.
Component cleaning and maintenance are key factors in increasing power generation. Photovoltaic projects in mining areas with frequent sandstorms and heavy dust should arrange cleaning operations reasonably according to the dust accumulation situation. Cleaning operations should avoid the high temperature period at noon, and the use of hard brushes and corrosive cleaning agents is strictly prohibited to prevent scratching of component glass; After extreme weather conditions such as rain, snow, hail, and strong typhoons, special re inspections must be carried out to investigate issues such as component damage, bracket deformation, and foundation erosion and collapse, and to promptly deal with dangerous situations.
Safe operation is an unbreakable red line for ground photovoltaic operation and maintenance. The DC side voltage of the ground power station is high. Before all maintenance and defect elimination operations, it is necessary to strictly follow the procedures of power-off, electricity inspection, and hanging and locking, and implement arc protection and insulation protection measures. Fences and warning signs should be set up in the field area to prevent unrelated personnel and livestock from entering the formation area; In the planting and breeding area under the board, standardize and control the operation route of agricultural machinery to avoid mechanical collision with brackets and cables.
According to the characteristics of different seasons, differentiated operation and maintenance plans should also be implemented. During the flood season, it is important to inspect the drainage channels in the site area to prevent water accumulation from soaking the support foundation; Clear the snow in a timely manner during winter to avoid long-term pressure damage to components; In summer, it is important to focus on equipment ventilation, heat dissipation, and fire prevention inspections. Conditional stations can establish an operation and maintenance ledger to record equipment maintenance, fault handling, cleaning and maintenance information, forming a full lifecycle management.
Industry insiders say that ground photovoltaic power stations are not projects that can be left unattended once they are built. Fine tuned operation and maintenance can effectively reduce downtime caused by faults and significantly improve the overall revenue of the power station. Through regular inspections, intelligent monitoring, and standardized operations, we ensure that each solar power station can stably output clean electricity and continuously release the efficiency of green development.
