Now showing items 1-19 of 19

  • Alternative models for markets with nonconvexities 

    Authors:Fuller, J. David; Çelebi, Emre
    Publisher and Date:(Elsevier Science Bv, 2017)
    In many electricity markets, the market operator solves a social welfare maximization (SW) model to determine market prices and generation (and consumption) "dispatch" instructions to firms participating in the market. When generation costs (or consumption benefits) are described as mixed integer programs, linear prices cannot, in general, be found such that all market participants are satisfied that the operator's dispatch instructions maximize profits, i.e., they perceive an opportunity cost. ...

  • Co-optimization models of generation and transmission investments with market-clearing equilibrium 

    Authors:Uyan, Zeki
    Publisher and Date:(Kadir Has University, 2018)
    Methods for co-optimizing transmission and generation investments including bi-level or multi-level problems consider trade-offs with market operations and interactions in electric power supply and demand. Under fairly general conditions it is known that simultaneous solution of these multi-level models using complementarity problems can give more useful results than iterative optimization methods or single-level optimization of generation or transmission expansion alone. Hence in this thesis we ...

  • A Comparative Study of Energy Models for Turkish Electricity Market Using LEAP 

    Authors:Massaga, Daniel Julius; Kirkil, Gökhan; Çelebi, Emre
    Publisher and Date:(IEEE, 2019)
    Fossil fuel thermal power plants constitute a large part of the Turkish electricity generation capacity. Turkish government has been developing several energy policy documents to evaluate how various renewable energy sources of the country can be utilized optimally in the generation of electricity within the next 30 years. This study considers three scenarios in the transition to renewable energy for Turkey; the business as usual (BAU), energy conservation (EC) and renewable energy (REN) scenarios. ...

  • A Comparative Study of Energy Models for Turkish Electricity Market Using LEAP 

    Fossil fuel thermal power plants constitute a large part of the Turkish electricity generation capacity. Turkish government has been developing several energy policy documents to evaluate how various renewable energy sources of the country can be utilized optimally in the generation of electricity within the next 30 years. This study considers three scenarios in the transition to renewable energy for Turkey; the business as usual (BAU), energy conservation (EC) and renewable energy (REN) scenarios. ...

  • Determination of time-of-use prices in electricity markets using clustering analyses 

    Authors:Hussain, Mohsan
    Publisher and Date:(Kadir Has University, 2016)
    in this thesis a clustering analysis to determine the blocks (clusters) of hours for time-of-use (TOU) pricing scheme is proposed and different clustering algorithms are compared using different measures i.e. change in overall revenue mean absolute percent error and adjusted coefficient of determination (R2) from multiple linear regression analyses. Hourly electricity price and demand (load) data for two seasons (winter and summer) from Pennsylvania-New Jersey-Maryland (PJM) wholesale electricity ...

  • Electricity market equilibrium models with dynamic demand functions 

    Authors:Çelebi, Emre
    Publisher and Date:(2013)
    Many electricity market models have either mostly ignored the demand response to changing prices (e.g. day-ahead models with mostly fixed demand) or at the other extreme they assumed that the full demand response occurred within one hour. Moreover the capital stock adjustment and the forward-looking nature of consumers are usually omitted. In this paper we propose variational inequality models for electricity markets with dynamic demand models where the intertemporal nature of consumption (i.e. ...

  • Gamma-Robust electricity market equilibrium models with transmission and generation investments 

    Authors:Çelebi, Emre; Krebs, Vanessa; Schmidt, Martin
    Publisher and Date:(SPRINGER HEIDELBERG, 2021-03)
    We consider uncertain robust electricity market equilibrium problems including transmission and generation investments. Electricity market equilibrium modeling has a long tradition but is, in most of the cases, applied in a deterministic setting in which all data of the model are known. Whereas there exist some literature on stochastic equilibrium problems, the field of robust equilibrium models is still in its infancy. We contribute to this new field of research by considering Gamma-robust ...

  • Generation/transmission investment planning integrated with market equilibrium models in electricity markets 

    Authors:Çelebi, Emre
    Publisher and Date:(IEEE Computer Society, 2017)
    This paper introduces integrated models for transmission investments anticipating the generation investments and market-clearing equilibrium. Market-clearing models for deregulated electricity markets can inform decision makers on price signals formed in the competitive market other investor's and/or generator's behaviors underlying these price signals and new generation/transmission investment decisions. Bi-level programming problems are formed for this integrated models and reformulated by using ...

  • Generation/transmission investment planning integrated with market equilibrium models in electricity markets 

    Authors:Çelebi, Emre
    Publisher and Date:(IEEE, 2017)
    This paper introduces integrated models for transmission investments anticipating the generation investments and market-clearing equilibrium. Market-clearing models for deregulated electricity markets can inform decision makers on price signals formed in the competitive market, other investor's and/or generator's behaviors underlying these price signals and new generation/transmission investment decisions. Bi-level programming problems are formed for this integrated models and reformulated by using ...

  • Market price simulations for Turkish electricity market using equilibrium models 

    Authors:Çakır, Hande
    Publisher and Date:(Kadir Has University, 2014)
    Electrical energy which is known as secondary energy sources is generated by the conversion of renewable energy sources to potential and chemical energy or is generated by variety processes of fossil fuels. Electricity is an important product in an economy and an important input for production of most of the goods and services. Electricity has unique properties such as non-storability and it has no full substitute and therefore the electricity industry is different from classical competitive ...

  • Market-clearing simulations and analyses for Turkish electicity market market 

    Authors:Şentürk Eker, Cansu
    Publisher and Date:(Kadir Has University, 2017)
    in this thesis current market structure of the Turkish electricity market which uses a uniform pricing system is analyzed and new market-clearing mechanisms (e.g. single or nodal pricing) are investigated for the market requirements. This has led to the development of different market-clearing models and market-price simulations that can be encountered in transition to a regional pricing model which provides market participants with greater transparency and simplicity in forecasting market outcomes. ...

  • Master problem approximations in Dantzig-Wolfe decomposition of variational inequality problems with applications to two energy market models 

    Authors:Çelebi, Emre; Fuller, David J.
    Publisher and Date:(Pergamon-Elsevier Science Ltd, 2013)
    In this paper a modification to Dantzig-Wolfe (DW) decomposition algorithm for variational inequality (VI) problems is considered to alleviate the computational burden and to facilitate model management and maintenance. As proposals from DW subproblems are accumulated in the DW master problem the solution time and memory requirements are increasing for the master problem. Approximation of the DW master problem solution significantly reduces the computational effort required to find the equilibrium. ...

  • Models for long-term electricity price forecasting for Turkish electricity market 

    Authors:Özçelik, Sirun
    Publisher and Date:(Kadir Has University, 2017)
    in this study we have developed models for long-term electricity price forecasts for Turkish electricity market using multiple regression and time series forecasting methods. For the regression models we have firstly obtained the monthly data for demand weighted average of market-clearing electricity price (dependent variable) electricity demand hydro power production wind power production and population as well as yearly gross domestic product (GDP) and human development index (HDi) as independent ...

  • Reformulations of a Bilevel Model for Detection of Tacit Collusion in Deregulated Electricity Markets 

    In this study, we consider a collusion model for competitive pool based electricity markets operated by an independent system operator (ISO), where it aims to prevent tacit collusion among generators. In order to determine the existence of tacit collusion in the market, we have employed the the game-Theoretic bilevel optimization model proposed by [1]. This model represents the market clearing mechanism, where generators determine their bids in order to maximize their profit while the system ...

  • Reformulations of a Bilevel Model for Detection of Tacit Collusion in Deregulated Electricity Markets 

    Authors:Çelebi, Emre; Şahin, Güvenç; Aliabadi, Danial Esmaeili
    Publisher and Date:(IEEE, 2019)
    In this study, we consider a collusion model for competitive pool based electricity markets operated by an independent system operator (ISO), where it aims to prevent tacit collusion among generators. In order to determine the existence of tacit collusion in the market, we have employed the the game-theoretic bilevel optimization model proposed by [1]. This model represents the market clearing mechanism, where generators determine their bids in order to maximize their profit while the system ...

  • A 'Regional Energy Hub' for achieving a low-carbon energy transition 

    Authors:Güler, Burak; Çelebi, Emre; Nathwani, Jatin
    Publisher and Date:(Elsevier Sci Ltd, 2018)
    The transition to a low-carbon energy economy will remain a cornerstone of national energy policies of countries committed to the climate change accord for decades to come. We think that transmission investment is one key policy instrument amongst other to help with this transition. We propose an enhanced role for investing in transmission capacity for inter-regional trade to allow effective fuel switching among countries through a physically connected market. We develop a conceptual framework of ...

  • Risk constrained self-scheduling for a power producer using power to hydrogen storage in day-ahead markets 

    Authors:Nur Küçük, Nida
    Publisher and Date:(Kadir Has University, 2019)
    In this thesis, optimal weekly self-schedule of a natural gas power plant with a hydrogen storage system is determined by using a stochastic model with risk constraints in a day-ahead electricity market. Different electricity price scenarios have been created for a weekly schedule where each scenario represents a certain month in a year. The risk associated with this scheduling decision is characterized by a conditional value at risk (CVaR) measure and a trade-off between this risk and operation ...

  • Turkey - Romania subsea transmission cable investment: Time for reconsideration? 

    Authors:Guler, Burak; Fuller, David J.; Çelebi, Emre; Nathwani, Jatin S.
    Publisher and Date:(2013)
    Transmission investment is important for integrating electricity markets operated by different countries/transmission system operators (TSOs). Turkey and Romania have proposed a transmission cable linking the transmission network between two countries under the Black Sea but this investment has been found infeasible due to the insufficient technical and financial benefits to the countries/TSOs. Now there may be a case for revisiting this project given emerging national and global policy frameworks ...

  • Turkish public preferences for energy 

    Public concern over energy supplies prices sustainability and efficiency has emerged as a major issue around the world. Yet most of what we know regarding public opinion on energy comes from North America and Europe. This paper presents the results from the 2016 Turkish Public Preferences for Energy Survey which included 1204 respondents and examined Turkish residents' household energy consumption energy policy preferences and environmental concerns. The main findings were that Turkish citizens ...