Integrated Planning and Simulation of Multipurpose Reservoir Operation for Basin-Wide Energy Maximization: Exploring the Case of Kaligandaki River Basin in Nepal
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I.O.E. Pulchowk Campus
Abstract
The Kaligandaki River, a significant tributary in Nepal, is central to various proposed
projects for reservoirs and inter-basin transfers, primarily aimed for hydropower
generation. These projects have been planned and studied separately without
observing the impact of individual projects on each other. To achieve efficient
reservoir operation, it is crucial to incorporate key elements such as water resource
management, hydropower considerations, and the integration of reservoir projects,
supported by simulation techniques.
This research undertakes to achieve shared benefits regarding the relationship of the
three reservoir projects i.e. Kaligandaki Storage Hydroelectric Project, Adhikhola
Storage Hydroelectric Project, Lower Badigad Storage Hydroelectric Project and an
inter-basin transfer project i.e. Kaligandaki Diversion Multipurpose Project lying in
the study area. HEC-ResSim software has been employed to simulate hydropower
under different project development scenarios. The simulation model was applied to
operate reservoirs as per the rule curve taken. For each of the three reservoir projects,
proposed reservoir operation rule curve assures the maximum annual average energy
and the dry energy productions with the best reservoir performance indicators. The
integrated operation of these projects aims to maximize energy generation and fulfill
the diversion requirements of the Kaligandaki Diversion Multipurpose Project
Description
The system of three planned reservoirs and an inter-basin transfer project of the
Kaligandaki River basin has the ability to produce a dry firm power of 466.8 MW.
The system has the capacity to produce an average total annual energy output of 8752
GWh per year, along with a dry energy output of 3322.4 GWh/year, by maintaining a
constant diversion rate of 82�3/� through the Kaligandaki diversion throughout the
year. Results show that undertaking these projects entirely will produce higher
benefits in terms of energy generation than planning these projects independently