Operation Optimization Based Upon Discharge and Power Requirement of Middle Marsyangdi Hydropower Station

Abstract

This research studied the condition of units of Middle Marsyangdi Hydropower Station. The study was focused to determine state of each unit. Amongst the two units, Unit 2 was found to have 0.28m lower head loss than Unit 1. But, Unit 1 was found to have 3.68% higher efficiency than Unit 2. Optimal power generation that could be achieved with any given total discharge and any value of gross head was determined. Similarly, the minimum discharge required to meet any particular power demand at any value of gross head was also determined. Based on the study of state of individual unit and optimization solution, comparison of optimal operation for each second of a day with operation from historical data of the power plant was done for eight days. The comparison of actual operation and the optimal operation shows that generation gain of 1.66-7.20% from same discharge and discharge saving of 1.58-4.96% for same generation is possible through optimal operation.