For an operating Photovoltaic Plant, the main exogenous limitation to optimal performance is represented by the environmental conditions and by soiling presence on the PV module surfaces. The main environmental parameters as solar radiation,
the basic feedstock of the system, and temperatures, influence performances of the plant, and less-heralded factors such as wind speed, wind direction, rainfall, concur to generate the environmental conditions determining the potential expected plant yield against which actual plant performances are measured. For this reason monitoring of the environmental
characteristics of the site and, on the other hand, of the PV module itself, can give parameters to calculate the efficiency of the power plant. The key variables to be monitored are: global irradiance, air temperature and module temperature, diffuse irradiance. Also wind speed, wind direction, rain and storm distance are key factors in the field of risk prevention during extreme events.
Meteorological station for PV application
A meteorological station designed for environmental monitoring in PV plants. Sensors for Performance Ratio calculation (Pyranometer, Air Temperature, PV module Surface Temperature) are accompanied by a Diffuse Irradiance, Wind Speed and Wind Direction Sensor or a Storm Distance Sensor and a Rain gauge for rainfall. System for soiling monitor can be integrated.
Field system for PV Performance – Ratio application
Modbus Sensor Box module is the simplest and fastest way to connect environmental sensors to PLC/SCADA systems by Modbus RTU. The module can be easily interfaced to Global Irradiance sensors, each with its own sensitivity value, temperature sensors (Air and PV module surface), wind speed and storm front distance sensors.
Range of data loggers for enviornmental applications for fix/portable, outdoor/indoor uses. Wide number and type of inputs. Low power consumption
Range of sensors for the measurement of the most typical meteorological quaintities. Connection to LSI LASTEM data loggers or third part systems
Range of PC programs for the data management, data display, data reporting, data communication and special applicative solutions for environmental calculation
Signal conditioning units
Signal conditioning units for Pt100, TC, V and Hz. 4-20 mA and RS485 Modbus output
Range of digital display to display the quantities and convert the signals coming from the supplied sensors