**Roof-Mounted Photovoltaic Building Detection and Identification System**
The roof is equipped with a professional unit for the detection and identification of photovoltaic buildings. As the distributed photovoltaic market continues to grow rapidly, idle roof spaces have become an important resource for solar power generation, especially in industrial and commercial sectors. These rooftops are valuable assets, and it's crucial to assess their structural capacity before installing photovoltaic systems. By doing so, companies can reduce energy costs and make full use of underutilized infrastructure, contributing to national energy conservation and emission reduction goals.
State Grid Electric Vehicle Company has seized this opportunity by leveraging the space and distribution facilities of fast charging stations and service areas to build a distributed photovoltaic power generation system. This initiative not only brings significant economic benefits but also supports the vision of "green charging and lighting piles."
Our company specializes in engineering testing and appraisal, with a team of experienced professionals including senior engineers, registered structural engineers, and safety appraisers. We operate under a standardized and professional management system, ensuring high-quality services in building structure design, safety evaluation, and cost estimation. Our goal is to provide accurate, reliable, and legally valid technical reports that meet industry standards and serve the public effectively.
**Why Test and Evaluate Roof-Borne Photovoltaic Structures?**
Over time, buildings may experience wear and tear, leading to potential structural issues. Regular inspections are essential, particularly during harsh weather conditions. Early detection of problems allows timely intervention, preventing serious accidents and extending the life of the structure.
**Understanding Building Structures**
A building’s structure consists of foundational elements like foundations, columns, beams, and walls that support the entire framework. Common structural types include:
- **Frame Structure**: Constructed using reinforced concrete columns, beams, and slabs.
- **Mixed Structure**: Combines brick walls (or columns) with concrete slabs.
- **Brick-Wood Structure**: Uses brick walls or wooden trusses as primary load-bearing components.
Among these, mixed and brick-wood structures are more prone to safety risks, with statistics showing they account for 81% of collapsed buildings. Therefore, careful assessment is necessary before installing any additional loads, such as photovoltaic panels.
**Photovoltaic Load Capacity Testing Process**
When installing photovoltaic systems on rooftops, it is essential to ensure the structure can bear the added weight. The process includes:
1. Reviewing construction and structural plans.
2. Assessing the current usage of the building.
3. Conducting on-site inspections to evaluate the condition of the structure.
4. Testing the strength of key materials.
5. Measuring deformations and stress points.
6. Analyzing the overall safety of the structure.
7. Issuing a detailed safety report.
**Key Considerations for Rooftop PV Installation**
For steel-framed buildings, the live load capacity of the roof must be carefully evaluated. In many regions, the standard live load is around 0.5–0.7 kN/m², which may not be sufficient to support the additional weight of photovoltaic panels. Proper testing and certification are required to avoid structural failures.
**Safety Measures for Distributed PV Systems**
To ensure the safe operation of a photovoltaic system, the following steps should be taken:
- Plan the layout carefully to prevent unauthorized access to equipment.
- Use products from reputable manufacturers and verify their certifications.
- Install a clearly marked and lockable main circuit breaker at the inverter output.
- Implement fire protection, grounding, and wind resistance measures.
- Regularly inspect and maintain the system to detect and address potential issues early.
By following these guidelines, the risk of accidents is significantly reduced, and the long-term reliability of the system is ensured.
**Our Commitment to Quality and Safety**
We are committed to delivering accurate, impartial, and legally recognized technical services. With advanced technology, professional standards, and a dedicated team, we strive to provide high-quality solutions for all your photovoltaic and structural testing needs. Contact us today for free consultations and expert guidance.
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