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/m^2)—instantaneous, average
2	Shaded pyranometer	-do-	Diffuse radiation (W/m^2)—instantaneous, average
3	Pyrheliometer	-do-	Direct irradiance (W/m^2)—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