Searched for: subject:"Unit%5C+commitment"
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Brinkman, Rosalie (author)
The Dutch government aims at 70% of electricity production from renewable energy sources in 2030 in order to reach a CO2 emission reduction of 49% as compared to 1990 levels. With the increasing share of variable renewables in the European power system, it becomes increasingly more important to find a way to deal with generation volatility. The...
master thesis 2019
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Philipsen, R.M. (author), Morales-Espana, G. (author), de Weerdt, M.M. (author), de Vries, L.J. (author)
Day-ahead electricity markets are inefficient due to their coarse discretisation of time and their representation of electricity production and consumption in energy per time interval. This leads to excessive costs and infeasible schedules in the market clearing results. Some real-world systems have increased the resolution to improve accuracy,...
journal article 2019
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Morales-Espana, G. (author), Lorca, Álvaro (author), de Weerdt, M.M. (author)
The increasing penetration of uncertain generation such as wind and solar in power systems imposes new challenges to the unit commitment (UC) problem, one of the most critical tasks in power systems operations. The two most common approaches to address these challenges — stochastic and robust optimization — have drawbacks that restrict their...
journal article 2018
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Zuiderveen Borgesius, Freek (author)
To limit global warming to 2 degrees Celsius in 2100, the European power sector needs to transform. Renewable energy capacity is required to reach this ambition, together with transmission and storage capacity to maintain grid stability. Carbon capture and storage could potentially decrease the required renewable energy capacity, while...
master thesis 2017
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Hylkema, Bouke (author)
Intermittent generation behaviour of wind and solar power units requires Transmission System Operators (TSOs) to activate balancing power to maintain a stable grid frequency. With the current strong growth in installed renewable energy capacity in The Netherlands, it is therefore expected that the volumes of activated balancing power will grow...
master thesis 2017
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Morales-Espana, G. (author), Ramirez Elizondo, L.M. (author), Hobbs, Benjamin F. (author)
Approximations made in traditional day-ahead unit commitment model formulations can result in suboptimal or even infeasible schedules for slow-start units and inaccurate predictions of actual costs and wind curtailment. With increasing wind penetration, these errors will become economically more significant. Here, we consider inaccuracies from...
journal article 2017
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Correa-Posada, Carlos M. (author), Morales-Espana, G. (author), Dueñas, Pablo (author), Sánchez-Martín, Pedro (author)
The growing increase of renewable generation worldwide is posing new challenges for a secure, reliable and economic operation of power systems. In order to face the uncertain and intermittent production of renewable sources, operating reserves must be allocated efficiently and accurately. Nowadays, these reserves are mainly assigned to thermal...
journal article 2017
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Ramos, Andres (author), Rivier, Michel (author), Garcia-Gonzalez, Javier (author), Latorre, J. M. (author), Morales-Espana, G. (author)
In this paper, we propose a method to analyze the amount of operation reserves procured in a system based on two stages. The first stage is a detailed hourly unit commitment and the second stage is a simulation model with a shorter time period. The method is applied to the Spanish hydrothermal system and several cases are analyzed to determine...
conference paper 2016
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Morales-Espana, G. (author), Baldick, Ross (author), García-González, Javier (author), Ramos, Andres (author)
This paper proposes a power-based network-constrained unit commitment (UC) model as an alternative to the traditional deterministic UCs to deal with wind generation uncertainty. The formulation draws a clear distinction between power-capacity and ramp-capability reserves to deal with wind production uncertainty. These power and ramp requirements...
journal article 2015
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Morales-España, G. (author), Davidson, M. (author), Ramírez-Elizondo, L. (author), De Weerdt, M.M. (author)
This document is an online companion for the paper "Robust Unit Commitment with Dispatchable Wind: An LP Reformulation of the Second-stage".
report 2015
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Nguyen, T.K.L. (author)
This master thesis aims at understanding the impact of wind on day-ahead-market (DAM) electricity prices using an integrated engineering-economic model. A realistic case study has been implemented, which is Electric Reliability Council of Texas (ERCOT) in Texas, U.S. in the month of August, 2014. To address the main research question of wind ?s...
master thesis 2015
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Morales-Espana, G.A. (author), Gentile, C. (author), Ramos, A. (author)
This paper provides the convex hull description for the basic operation of slow- and quick-start units in power-based unit commitment (UC) problems. The basic operating constraints that are modeled for both types of units are (1) generation limits and (2) minimum up and down times. Apart from this, the startup and shutdown processes are also...
journal article 2015
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Nasri, A. (author)
Nowadays, power systems are dealing with some new challenges raised by the major changes that have been taken place since 80’s, e.g., deregulation in electricity markets, significant increase of electricity demands and more recently large-scale integration of renewable energy resources such as wind power. Therefore, system operators must make...
doctoral thesis 2014
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Barsoum, I. (author)
master thesis 2014
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Renson, P.I.A. (author)
This master thesis aims at improving the understanding of the factors affecting the cost and emission impacts of wind operations using an engineering- economic (unit commitment) model and generator performance data based on actual US and other country experience, and to analyze the impact of incentive mechanisms on wind power participation in...
master thesis 2013
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Morales-Espana, G. (author), García-González, Javier (author), Ramos, Andrés (author)
Reserves are playing each time a more important role due to the massive penetration of renewable energy sources nowadays. Operating reserves must be used for unforeseen events. All predictable events must be directly considered in the scheduling stage otherwise there will be an inefficient and unnecessary use of reserves that increases system...
conference paper 2012
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Ntotas, K. (author)
This report will focus on one important aspect of the transitional wave towards the future, which is the current issue of large-scale wind integration within the power system. The approach aims to illustrate the significance that international exchange can play in wind power's integration and it will be assisted by a computational tool, PowrSym3...
master thesis 2008
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Ummels, B.C. (author), Gibescu, M. (author), Pelgrum, E. (author), Kling, W.L. (author), Brand, A.J. (author)
journal article 2007
Searched for: subject:"Unit%5C+commitment"
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