Overview

Under contract NEA-IHPS-2074/75-ET/12, Mahavir Shree International Pvt. Ltd. carried out rehabilitation and modernisation works at the Nepal Electricity Authority's Puwakhola Hydropower Station in Ilam, covering the unit control, governor, excitation, switchgear and protection systems.

Scope & Deliverables

• PLC and SCADA-based unit control system with digital governor, excitation and synchroniser, for two units
• Operator and engineering stations
• Brushless, dual-channel AVR excitation control panels
• Governor hydraulic oil pressure units with deflector servomotors
• 6.6 kV indoor vacuum circuit breakers with control and protection panels for the generators, main transformer and station transformer
• 6.6 kV XLPE power cabling
• Forebay gate position sensors and water level sensors

Outcome

NEA certified the rehabilitation and modernisation works as successfully completed at the end of fiscal year 2077/078 (July 2021).