Tool: Loss Evaluation Method for Power Transformers Serving Large PV PlantsTool:

PV Transformer Loss Evaluation

A comprehensive loss-evaluation method for power transformers serving large-scale solar applications. It evaluates life-cycle losses and the Total Ownership Cost (TOC) of transformers owned by Independent PV Power Producers or Regulated Utilities.

Developed by PSM Lab — supported by the Electricity Authority of Cyprus.

PV Plant Technical Data

Plant location i

Size of PV plant (MWp) i

Transformer lifetime: 30 years

PV Plant Financial Data

Capital investment (€) i

Operation & Maintenance cost (€/yr) i

Nominal discount rate: 10%

Inflation rate: 2%

System Energy Charges

Average Industrial/Commercial electricity rate (€/kWh)

Annual escalation factor for the electricity rate (%)

Compare Transformer Total Ownership Cost

Transformers to compare:

Transformer A

Purchase price (€)

No-load losses (kW)

Load losses (kW)

Auxiliary losses (kW)

PV Transformer Loss Evaluation

PV Plant Technical Data

PV Plant Financial Data

System Energy Charges

Compare Transformer Total Ownership Cost

Transformer A

Transformer B

Transformer C

Results