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Solar Energy Measurement

SEMS (Solar Energy Measurement System) to measure Direct Normal Irradiance (DNI), Diffuse Horizontal Irradiance (DHI) and Global Horizontal Irrandiance (GHI), as well as all of the weather parameters of interest for Photovoltaic (PV), Concentrated Photovoltaic (CPV) and Concentrated Solar Power (CSP) solar plants.




Solar Energy Measurement

The SEMS System is basically available in three versions, depending on the solar irradiance components that need to be measured in each of the types of existing solar power plants, that is, depending on whether they have PV fixed panels, PV panels with one or two axes orientation (monofacial or bifacial), CPV concentrating photovoltaic or CSP concentrated solar power:

  • SEMS-PV for plants with PV fix or oriented photovoltaic solar panels.
  • SEMS-2000/3000 for plants with CPV concentrated photovoltaic and CSP concentrated solar power plants.
  • SEMS-Spectral for plants with PV photovoltaic solar panels and for Research.

In addition to the various components of solar Irradiance, the SEMS System is also responsible for measuring all the other meteorological parameters that affect the operation of solar plants, as well as other different measures, such as the degree of dirt on the panels ( soiling index), the short circuit current or the open circuit voltage of the panels.

The three systems are described separately below.


SEMS-PV

SEMS-PV

An integrated solution with direct connection to the plant’s SCADA for the measurement of solar Irradiance and other weather parameters that are needed to calculate the efficiency (Performance Ratio-PR) of solar power plants, as well as to monitor them remotely in real time over the Internet.

SEMS-2000/3000

SEMS-2000/3000

The SEMS-2000/3000 System is an integrated solution for automated measurement of Direct Normal Irradiance (DNI), Diffuse Horizontal Irradiance (DHI) and Global Horizontal Irradiance (GHI) with the solar tracker model SunTracker-2000/3000, in addition to measuring other weather parameters that are important for solar energy plants, both thermal and photovoltaic.

SEMS-Spectral

SEMS-Spectral

An automated system to accurately measure Solar Irradiance and Spectral Solar Irradiance in the 280 - 4000 nm range, with a resolution of 1 nm and specifically, Aerosol Optical Depth (AOD), Water Vapour Content and Ozone level, all in a compact, low-power device.

More information about SEMS: Measurement of solar resource


SEMS