Scholarlink

<p>Hydropower has been proven to be a promising clean energy to combat global warming and the impacts of climate change. Although storage-based hydropower systems can achieve a high-capacity factor when compared to runoff schemes, harnessing more hydropower through the cascade of reservoirs would further increase benefits. It is also imperative to evaluate future demand and supply when planning, including climate change impacts, besides just utilizing historical data. This study aims to develop a simulation–optimization framework to optimize the capacity of the dual reservoir system placed in a cascade manner. To demonstrate the efficacy of the proposed approach, the storage-based Sunkoshi-2 (SU-2) and Sunkoshi-3 (SU-3) hydropower reservoir projects (HPP) in Nepal were chosen. The calibrated Soil &amp; Water Assessment Tool (SWAT) model was used to generate the future reservoir inflows for the climate change impact assessment. Future periods were divided into two: 2031–2050 (early future) and 2071–2090 (late future) under RCP 4.5 and RCP 8.5 scenarios. The analyses resulted in an installed capacity of 400&#xa0;MW for SU-3, producing 2164 GWh of annual energy, with 750 GWh as dry energy (35.2%). Similarly, for SU-2, 950&#xa0;MW is suggested, which resulted in 3266 GWh of annual energy, out of which 674 GWh (21%) is dry energy. The combined operation of the dual reservoirs under climate change revealed an increasing total annual and dry energy generation by more than 16 and 24%, respectively. The analysis suggests increased spillage under all future scenarios but no consistent trends, with minimal negative impact on energy generation.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Dual Storage-Based Cascade Reservoir Simulation Under Changing Climate: A Case Study on Sunkoshi Hydropower Projects in Nepal

  • 期刊论文

  • 发表日期：

    2025年5月30日

查看全文
  • K. S. Kasiviswanathan,
  • M. L. Kansal,
  • B.-S. Soundharajan,
  • Suresh Devaraj,
  • Vijay Sharma

摘要

Hydropower has been proven to be a promising clean energy to combat global warming and the impacts of climate change. Although storage-based hydropower systems can achieve a high-capacity factor when compared to runoff schemes, harnessing more hydropower through the cascade of reservoirs would further increase benefits. It is also imperative to evaluate future demand and supply when planning, including climate change impacts, besides just utilizing historical data. This study aims to develop a simulation–optimization framework to optimize the capacity of the dual reservoir system placed in a cascade manner. To demonstrate the efficacy of the proposed approach, the storage-based Sunkoshi-2 (SU-2) and Sunkoshi-3 (SU-3) hydropower reservoir projects (HPP) in Nepal were chosen. The calibrated Soil & Water Assessment Tool (SWAT) model was used to generate the future reservoir inflows for the climate change impact assessment. Future periods were divided into two: 2031–2050 (early future) and 2071–2090 (late future) under RCP 4.5 and RCP 8.5 scenarios. The analyses resulted in an installed capacity of 400 MW for SU-3, producing 2164 GWh of annual energy, with 750 GWh as dry energy (35.2%). Similarly, for SU-2, 950 MW is suggested, which resulted in 3266 GWh of annual energy, out of which 674 GWh (21%) is dry energy. The combined operation of the dual reservoirs under climate change revealed an increasing total annual and dry energy generation by more than 16 and 24%, respectively. The analysis suggests increased spillage under all future scenarios but no consistent trends, with minimal negative impact on energy generation.