Soiling Measurement System
Soiling—the accumulation of dust, dirt, pollen, and other contaminants on photovoltaic (PV) modules—reduces energy generation in PV power plants. Average annual losses range from 1–6%, varying by site conditions. Accurate monitoring is essential, especially in utility-scale plants under performance guarantees. Soiling Monitoring Systems (SMS) measure losses using two co-planar PV reference modules: one kept clean by automated washing, and the other left to accumulate soiling. By comparing the current and maximum power output of both modules—adjusted for temperature—operators determine the soiling ratio (SR), which indicates the performance impact of soiling in real time and helps optimize maintenance scheduling.
Soiling—the accumulation of dust, dirt, pollen, and other contaminants on photovoltaic (PV) modules—reduces energy generation in PV power plants. Average annual losses range from 1–6%, varying by site conditions. Accurate monitoring is essential, especially in utility-scale plants under performance guarantees. Soiling Monitoring Systems (SMS) measure losses using two co-planar PV reference modules: one kept clean by automated washing, and the other left to accumulate soiling. By comparing the current and maximum power output of both modules—adjusted for temperature—operators determine the soiling ratio (SR), which indicates the performance impact of soiling in real time and helps optimize maintenance scheduling.
Key Feature
- MODBUS TCP/485 output to communicate with SCADA with options to communicate through Wi-Fi.
- Automatic cleaning of solar modules at user defined time.
- Accuracy better than ±1%.
- Simple and easy configuration using PC based utility.
- Does not require any kind of on-site programming.
- Operational in extreme environment with standard operating range of 0oC to +70oC
- Highly accurate and precise soil monitoring system specifically designed for Solar Power plants
- Simple and user-friendly to install
- Time synchronization with SCADA
Specification
| No. of Channels | 4 Nos (2 Nos for Solar Panels and 2 Nos for Module Temperature Sensor) |
| Module Temperature Measurements | Range: -40° to 150°C |
| Accuracy: ± 0.2°C | |
| Resolution: 0.01°C | |
| Short Circuit Current Range | 0-20Amp |
| Voltage Measurement Range | 0-60V |
| Shunt Accuracy | ± 0.1% |
| Resolution | 1% |
| Response Time | <10S |
| Solar Module | 100W each (Standard) |
| Liquid Tank Capacity | 100 Liters |
| Spray Nozzle Pressure | 5kg/bar |
| Pump Pressure | 6 bar |
| Water Consumption for Cleaning | 3-5 Liter per Minute for each module |
| Time for Cleaning | 1 min for each module |
| Protocols Supported | MODBUS, Ethernet, FTP, and HTTP |
| Storage | 32GB |
| Data Logging Time Interval | 1min to 24 hours in user defined time interval |
| Time Synchronization | Server PC, SCADA Server and Internet Server |
| Communication |
Wired: MODBUS TCP/485 Wireless: Wi-Fi |
| System Power Requirement | Voltage: 9 to 28V DC |
| Environmental Conditions |
Operating Conditions: 0° C to 70° C non-condensing Environment Storage Conditions: 0° C to 80° C non-condensing environment |
| IP Protection | IP-65 |
| Warranty | 2 years against manufacturing defect |
| Recommended Recalibration | 2 years |
| Applications | Indigenous Soil Monitoring System especially designed for monitoring Soiling Loss for Solar PV plant |
| Certifications | NABL Accredited lab - at additional price on request |