Least Cost Optimization in Middle Sakarya River Basin with the focus on Water-Energy Nexus

2019-12-13
Water-energy systems have an interconnected relationship. While water is needed to generate energy, energy is required for water extraction, treatment, and distribution. It is important to understand this relationship since a demand failure in one of the systems can cause a breakdown in the other one. Ensuring energy security actually depends on ensuring water security and vice-versa. This relationship between water and energy is called as water-energy nexus. Increase in water and energy demand, growing population, and climate change are significant threats for this reslationship. Achieving sustainable water-energy relationship is especially important for semi-arid regions where water availability is low. In light of this information, this study aims to evaluate the water-energy nexus in the Middle Sakarya River Basin and to determine the least cost electricity generation options for this basin. For this purpose, two separate modelling tools are integrated so that the feedbacks between the water management and energy management sectors are captured. These tools are the Water Evaluation and Planning (WEAP) system and the Long-range Energy Alternatives Planning (LEAP) system. The hydropower plants are modelled in WEAP and LEAP responds to the total electricity demand by dispatching the thermal and hydropower mix including the WEAP's estimate of available hydropower. The models are calibrated for the 2005-2008 simulation period. Within this simulation period, there are three active hydroelectric power plants and one lignite fired thermal power plant in the watershed. The total installed capacities of the power plants is 1096 MW. The least cost optimization scenario results show that the electricity generation in the hydroelectric power plants should be increased by 23% while the generation in the thermal power plant is decreased by 4% on average to meet the electricity demand based on least cost electricity generation. This also means that the capacity factors of the hydroelectric power plants is increased from 13% to 19%, and that of the thermal power plant is decreased from 79% to 76%. These are the initial findings of the study. As a future study, the model will be verified for a different simulation period, i.e. for wetter years, and the impacts of the climate change on water and energy systems will be analyzed.
AGU Fall Meeting 2019, 9 – 13 December 2019

Suggestions

Reducing MIMO detection complexity via hierarchical modulation /
Uğur, Yiğit; Yılmaz, Ali Özgür; Department of Electrical and Electronics Engineering (2014)
This work considers multiple-inputmultiple-output (MIMO) communication systems using hierarchical modulation. A disadvantage of the maximum-likelihood (ML) MIMO detector is that its computational complexity increases exponentially with the number of transmit antennas. To reduce complexity, we propose a hierarchical modulation scheme to be used in MIMO transmission where base and enhancement layers are incorporated. In the proposed receiver, the base layer is detected first with a minimum mean square error (...
Discrete Optimization of Truss Structure using Probability Collectives
Kulkarni, Anand J.; Kale, I. R.; Tai, K.; Azad, S. Kazemzadeh (2012-12-07)
Traditionally, complex systems were treated using centralized approaches; however, recent trends highlighted that the growing complexity can be best dealt by decomposing the entire system into subsystems and further treat them in a distributed way. The approach of Probability Collectives (PC) in Collective Intelligence (COIN) framework decomposes the entire system into a Multi-Agent System (MAS) or a collection of rational and self interested agents and further optimizes them in a distributed and decentrali...
Sufficient Conditions on Observability Grammian for Synchronization in Arrays of Coupled Linear Time-Varying Systems
Tuna, Sezai Emre (2010-11-01)
Synchronizability of stable, output-coupled, identical, linear time-varying systems is studied. It is shown that if the observability grammian satisfies a persistence of excitation condition, then there exists a bounded, linear time-varying feedback law that yields exponential synchronization for all fixed, asymmetrical interconnections with connected graphs. Also, a weaker condition on the grammian is given for asymptotic synchronization. No assumption is made on the strength of coupling between the systems.
Evaluation of Water-Energy Nexus in Sakarya River Basin, Turkey
Özcan, Zeynep; Alp, Emre (2020-01-01)
Achieving sustainable water-energy relationship is especially important for semi-arid regions. Water consumption due to electricity generation can reach up to 8.4% of the total water potential in the study area. Between 659 and 2851 m(3) of water is found to be consumed per GWh of electricity generated at cooling systems.
Evaluation of Water–Energy Nexus in Sakarya River Basin, Turkey
Özcan, Zeynep; Aydınalp Köksal, Merih; Alp, Emre (Springer, London/Berlin , 2020-10-01)
Achieving sustainable water–energy relationship is especially important for semi-arid regions. Water consumption due to electricity generation can reach up to 8.4% of the total water potential in the study area. Between 659 and 2851 m3 of water is found to be consumed per GWh of electricity generated at cooling systems.
Citation Formats
Z. Özcan and E. Alp, “Least Cost Optimization in Middle Sakarya River Basin with the focus on Water-Energy Nexus,” presented at the AGU Fall Meeting 2019, 9 – 13 December 2019, San Francisco, California, USA, 2019, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/87935.