Endüstri Mühendisliği Bölümü Koleksiyonu

Permanent URI for this collectionhttps://hdl.handle.net/20.500.12469/48

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Citation - WoS: 4
Citation - Scopus: 6
Agent-Based Optimization To Estimate Nash Equilibrium in Power Markets
(Taylor & Francis Inc, 2013) Yücekaya, Ahmet; Valenzuela, Jorge; Industrial Engineering; 05. Faculty of Engineering and Natural Sciences; 01. Kadir Has University
In most deregulated power markets firms bid daily into a day-ahead power market. The auction mechanism supply and demand determine the equilibrium at each hour. In this environment firms aim to maximize their revenues by carefully determining their bids. This requires the development of effective computational methods that help them estimate their competitors' behaviors under incomplete information. In this article an agent-based method that uses particle swarm optimization is described to simulate the behavior of market participants. Particle swarm optimization is used in the bidding process and an agent-based model is applied to find a Nash equilibrium. Different stopping conditions are used to determine the equilibrium. Experimental results are presented for two power systems.
Citation - WoS: 1
Landfill Gas To the Energy Potential of Turkey: a Scenario-Based Multi-Period Simulation
(Taylor & Francis Inc, 2013) Yücekaya, Ahmet; Industrial Engineering; 05. Faculty of Engineering and Natural Sciences; 01. Kadir Has University
Turkey is a developing country with increasing power demands and limited energy sources. Municipal solid waste processing landfilling and utilization of the gas to generate electric power and lower emissions has been used in developed countries for decades however it is relatively new in Turkey. The new regulations force municipalities in the country to build landfills to safely store the waste and secure the emission gases. The landfill gas can be utilized to produce energy and heat or if the quality is high it can be transported to a natural gas pipeline. In this article an overview of landfill gas-to-energy plants in the world is presented and the situation in Turkey is analyzed. A multi-period simulation methodology for municipalities is proposed to estimate the potential power generation and amount of methane that can be prevented. The municipalities in Turkey were classified into three categories and a scenario-based simulation is performed to estimate the energy generation and emission reduction that the country can gain if the landfill projects are activated according to the scenarios.
Citation - WoS: 12
Citation - Scopus: 13
Multi-Objective Fuel Supply for Coal-Fired Power Plants Under Emission Transportation and Operational Constraints
(Taylor & Francis Inc, 2013) Yücekaya, Ahmet; Industrial Engineering; 05. Faculty of Engineering and Natural Sciences; 01. Kadir Has University
Coal-fired power plants need to decrease their generation cost in deregulated power markets so as to be selected dispatched and compete with other cheaper resources. On the other hand coal prices have risen significantly and extra costs for SO2 and NOx emission outputs are imposed that force power companies to lower the costs for the fuel-coal supply process. In this article a multi-objective model for supplier transportation and coal order selection is developed for the coal supply of electric power plants in an environment where multiple suppliers coal contracts and multimode transportation routes exist. The model simultaneously optimizes multiple objectives such as minimizing purchase transportation sulfur dioxide and nitrogen oxides costs and carbon dioxide and ash outputs of coal. Multi-objective linear programming and analytic hierarchy process are employed to solve the problem. The solution methodology is applied in a case study in the Midwestern United States and the alternative evaluation process is presented. It is shown that the model can be used by the power companies to find a desired solution for their coal supply and hence generate power with coal of lower cost lower emission and ash.

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Browsing Endüstri Mühendisliği Bölümü Koleksiyonu by Journal "Energy Sources, Part B: Economics, Planning, and Policy"