Universidad Carlos III de Madrid - UC3M

  (Auditorias Fotovoltaicas)

Audits of large-scale photovoltaics plants.

PV modules

PV inverters

a) Audits of large-scale PV plants.

• Due Diligence analysis
• Diagnosis analyses in preventive maintenance
• Inspection and verification of PV plants (accoding to the IEC 62446)
• In-depth analysis of anomalies and operative incidents
• Performance Ration (PR) calculation
• PV modules inspection: IR and hot-spot analysis
• Electrical insulation test
• Wet leakage current test

b) PV elements Audits

1) PV modules

Visual inspection

* I-V characteristic measured

According to IEC 60904-1 that permits to obtain the main parameters such as Isc, Voc, Impm, Vmpm, Pmpm and FF in Standard Test Conditions (STC)

* IR and hot-spot analysis

* Electrical insulation test

Wet leakage current test

• Study of the different tracker systems
• Positioning accuracy evaluation
• Comparison between tracking and fixed PV systems

• Outdoor measurements
• Testing up to 500 kVA grid-tied inverters
• Outdoor 500 kW PV generator (800 Vdc@600 Adc and Three-phase 400 Vac)
• Inverter analysis:
• PV input and output power
• Efficiency: maximum efficiency: European effciency, Californian efficiency
• Analysis and evaluation of the maximum power point tracking efficiency
• Parameters related to the quality of the energy injected into the grid