Research Article
Performance Modeling of the Weather Impact on a Utility-Scale PV Power Plant in a Tropical Region
Table 2
Summary of measuring instruments in an SRRA station.
| Sl no. | Instrument | Manufacturer | Parameter |
| A. Solar measuring instruments | 1 | Pyranometer | Phase I: Eppley, USA Phase II: Hukseflux, NL | Global radiation (W/m2)—instantaneous, average | 2 | Shaded pyranometer | -do- | Diffuse radiation (W/m2)—instantaneous, average | 3 | Pyrheliometer | -do- | Direct irradiance (W/m2)—instantaneous, average | 4 | Solar tracker | Geonica, Spain | Mounted with shaded pyranometers and pyrheliometer |
| B. Meteorological measuring instruments | 5 | Ultrasonic wind sensor | R. M. Young, USA | Wind speed and wind direction—standard deviation, maximum, and average | 6 | Rain gauge | -do- | Rain accumulation | 7 | Pressure sensor | -do- | Atmospheric pressure | 8 | Temperature & relative humidity sensor | -do- | Temperature and humidity—average, maximum, and minimum |
| C. General instruments | 9 | GPS | Garmin, USA | To synchronize sun tracker with sun movement | 10 | Data logger & modem | Geonica, Spain | Collecting data from sensors | 11 | GPRS | Garmin, USA | To transfer data through mobile SIM cards | 12 | Solar PV panel | Moser Baer, India | For charging battery for powering the station | 13 | External battery | Exide, India | For electrical storage |
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