The inspection of current for each string in a solar power system is a crucial step to ensure the performance and efficiency of the system. If the current shows a value below 1 ampere, this indicates a fault that requires immediate verification. The causes can be multiple, with the most common being:
1. Circuit Breakage:
- Damage or disconnection in the cables.
- Weak electrical connections.
2. Effects of Shadows or Dirt:
- Accumulation of dust or partial shading reduces panel output.
3. Fault in One of the Solar Panels:
- Internal defects in the panel leading to poor performance.
4. Issues in the Combiner Box:
- Burnt fuse or internal damage.
5. Variations in Installation Settings:
- Different tilt angles or orientations affect production efficiency.
How to Verify and Address the Problem
- Visual Inspection:
- Check cables and connections for visible damage.
- Clean the panels from dust or impurities.
- Accurate Current Measurement:
- Use a clamp meter to measure the current for each string and compare the values to the expected current based on solar radiation.
- Check the Fuses:
- Verify the integrity of the fuses and replace any that are damaged.
- Performance Analysis Using Advanced Devices:
- Use an IV Curve Tracer to analyze the behavior of each string and accurately identify the source of the problem.
The Golden Advice
Conducting these inspections regularly not only ensures the efficiency of the system and continuity of production but also prevents major faults that could impact the overall system performance. Regular maintenance equals longevity.