LVAC LOAD ESTIMATION REPORT – BESS, NG COMPOUND, AUXILIARY TRANSFORMER SIZING

OBJECTIVES:
• Calculate LVAC load for substation auxiliary systems.
• Size auxiliary transformers for BESS compound, NG compound, and general substation.

KEY TOPICS:
• Load estimation methodology (lighting, HVAC, battery chargers,motors).
• Diversity and demand factors.
• Auxiliary transformer sizing (kVA, voltage regulation, impedance).
• Backup supply arrangements (Diesel generator, dual feeders, UPS).
• BESS and NG compound-specific loads.

PRACTICAL FOCUS:
• Prepare LVAC load estimation report for 132kV substation.
• Exercise: Size auxiliary transformer for BESS compound (200kW load).
• Case study: Undersized transformer causing voltage dip.

SUGGESTED DIAGRAMS:
• Load estimation spreadsheet.
• Auxiliary transformer nameplate example.
• Single line of LVAC distribution.

KEY TAKEAWAYS:
• Ability to produce professional load estimation reports.
• Understanding of auxiliary supply reliability.

STANDARDS & REFERENCES:
• IEC 60076, IEEE C57.
• Client load estimation guidelines.

CERTIFICATION & DELIVERY:
• Certificate of Completion awarded.
• Delivery Mode: Online (On-demand).

PREREQUISITES:
• Basic knowledge of LVAC systems and transformers.