PV Systems Monitoring Laboratory

The PV System Monitoring Laboratory at SERIS conducts real-time analytical monitoring of photovoltaic systems as well as meteorological parameters. Over the recent years, SERIS has developed an award-winning proprietary monitoring system, based on rugged, industrial-grade National Instruments hardware and LabVIEW software for remote data logging and remote control of SERIS-monitored PV systems and meteorological stations. The monitoring system is highly versatile and can be customised to meet specific project requirements. It has been deployed successfully in projects across Asia-Pacific.


The monitoring video wall in the lab, displaying the live solar irradiance map of Singapore (also available at www.solar-repository.sg), live sky images, rooftop PV system performance data, as well as numerous real-time meteorological parameters from remote stations deployed across Singapore.


Features of the live monitoring systems include:

  • Real-time (“live”) data transmission for key PV system and meteorological parameters
  • Better than 1-second resolution of various DC and AC parameters of PV systems, plus meteorological parameters such as irradiances measured with different sensor devices and inclinations, module and ambient temperatures, relative humidity, wind speed, wind direction, air pressure, etc.
  • ± 150 ms time synchronisation with SERIS time server
  • Better than 99% data acquisition reliability
  • Secure data communication via VPN over 4G network
  • Live irradiance map for Singapore (spatially resolved). Maps can be assessed online at the National Solar Repository (NSR) website, www.solar-repository.sg
  • 1-minute sky images from different locations in Singapore, also available on the NSR website
  • Solar irradiance forecasting algorithms with different forecast horizons (e.g. 15 minutes, 30 minutes, 1 hour and 1 day ahead)
  • 6-degrees of freedom floating platform motion monitoring system, designed especially for floating PV systems
  • Tailored alarm system according to customer needs (such as inverter trips, grid outages, system underperformance), including SMS and email services
  • High-quality online or screen visualisation for various target groups: operations managers, engineers, general public (for example through displays in corporate entrance areas)

Demonstration setup of a remote meteorological station (left) and a motion monitoring sensor for floating PV systems (right).

For further information, please contact:

Dr ZHAO Lu
lu.zhao@nus.edu.sg