The Experts below are selected from a list of 237 Experts worldwide ranked by ideXlab platform
Ronnie Belmans - One of the best experts on this subject based on the ideXlab platform.
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Impact of residential demand response on Power System operation: A Belgian case study
Applied Energy, 2014Co-Authors: Benjamin Dupont, Kristin Dietrich, C. De Jonghe, Andres Ramos, Ronnie BelmansAbstract:Abstract The Future Power System is characterized by more renewable and uncontrollable capacity at the supply side and an electrification of energy at the demand side. Both evolutions increase the need for flexibility in the Power System. Although this flexibility can be triggered at the supply and demand side, the latter is often overlooked. In this perspective, this paper assesses the impact of the use of flexibility at the demand side, also referred to as demand response, on Power System operation. A two-stage modeling approach is used which combines a day-ahead deterministic unit commitment model and an hourly simulation in real-time. This approach is tested for two alternative Belgian generation technology mix scenarios including a detailed representation of residential demand response. Hereby, realistic cycling patterns of white goods and mobility patterns of battery electric vehicles serve as an input. This approach allows to quantify operational benefits of demand response and to assess a potential introduction of demand response in Power System operation. Results show that in general demand response contributes to a lower cost, higher reliability, and lower emission level of Power System operation. Moreover, a higher amount of uncontrollable capacity increases these benefits and therefore the societal value of demand response.
Igor Kuzle - One of the best experts on this subject based on the ideXlab platform.
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introducing low order System frequency response modelling of a Future Power System with high penetration of wind Power plants with frequency support capabilities
Iet Renewable Power Generation, 2018Co-Authors: Matej Krpan, Igor KuzleAbstract:Wind Power generation has reached a significant share in Power Systems worldwide and will continue to increase. As the converter-connected generation reduces the grid inertia, more and more interest has been given to exploiting the kinetic energy and controllability of variable-speed wind turbine generators (VSWTGs) for frequency support. Consequently, the grid frequency dynamics are changing. Thus, it is necessary to include the frequency response of wind Power plants in the System frequency response (SFR) model. A novel approach to low-order SFR modelling of a Future Power System with a high share of frequency-support-capable VSWTGs has been presented. Low-order model of VSWTGs with primary frequency response and natural inertial response has been developed considering different wind turbine operating regimes and compared to the non-linear model for validation. Low-order model has been presented in a symbolic transfer function form. Model accuracy has been discussed and the impact of VSWTG parameters on frequency response has been analysed. The developed model facilitates studying Power System frequency dynamics by avoiding the need for modelling complex VSWTG Systems, while retaining a satisfying level of accuracy.
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Hands-on laboratory course for Future Power System experts
2015 IEEE Power & Energy Society General Meeting, 2015Co-Authors: Igor Kuzle, Juraj Havelka, Hrvoje Pandzic, Tomislav CapuderAbstract:This paper describes the development of a modern Power System laboratory within a Bologna Declaration compliant curriculum at the Department of Energy and Power Systems, Faculty of Electrical Engineering and Computing, University of Zagreb. The paper describes laboratory components and provides insight into the experiments that students are required to perform. The laboratory course is divided into three major components: Power System simulations, computer simulations and high voltage. Power System simulations are performed on a miniature real-world Power System that can be synchronized to the actual Power System. Computer simulations are performed both on commercially available software solutions commonly used by Power utilities and consulting companies, and on software tools developed at the Department of Energy and Power Systems. High voltage exercises are performed in the High Voltage Laboratory, where students are familiarized with high voltage phenomena. Results of student questionnaires collected over the previous four years are analyzed. This feedback, together with industry experts' observations and suggestions, provides the basis for improvements that are constantly introduced.
Benjamin Dupont - One of the best experts on this subject based on the ideXlab platform.
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Impact of residential demand response on Power System operation: A Belgian case study
Applied Energy, 2014Co-Authors: Benjamin Dupont, Kristin Dietrich, C. De Jonghe, Andres Ramos, Ronnie BelmansAbstract:Abstract The Future Power System is characterized by more renewable and uncontrollable capacity at the supply side and an electrification of energy at the demand side. Both evolutions increase the need for flexibility in the Power System. Although this flexibility can be triggered at the supply and demand side, the latter is often overlooked. In this perspective, this paper assesses the impact of the use of flexibility at the demand side, also referred to as demand response, on Power System operation. A two-stage modeling approach is used which combines a day-ahead deterministic unit commitment model and an hourly simulation in real-time. This approach is tested for two alternative Belgian generation technology mix scenarios including a detailed representation of residential demand response. Hereby, realistic cycling patterns of white goods and mobility patterns of battery electric vehicles serve as an input. This approach allows to quantify operational benefits of demand response and to assess a potential introduction of demand response in Power System operation. Results show that in general demand response contributes to a lower cost, higher reliability, and lower emission level of Power System operation. Moreover, a higher amount of uncontrollable capacity increases these benefits and therefore the societal value of demand response.
Yoshifumi Zoka - One of the best experts on this subject based on the ideXlab platform.
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issues for Power System operation for Future renewable energy penetration robust Power System security
Electrical Engineering in Japan, 2013Co-Authors: Naoto Yorino, Yutaka Sasaki, Shoki Fujita, Yoshifumi Zoka, Yoshiharu OkumotoAbstract:A large amount of PV penetration may introduce uncertainties in Future Power System planning and operations. This paper proposes the concept of “Robust Security (RS)” and the “RS region” in order to investigate Power System security in the presence of a large amount of uncertainties. The RS region is defined as the region of Power System operation where the System is secure under uncertainties. It is shown that the region tends to shrink and disappear for a high degree of PV penetration. Emerging problems concerned with security in Future Power Systems are investigated. © 2012 Wiley Periodicals, Inc. Electr Eng Jpn, 182(1): 30–38, 2013; Published online in Wiley Online Library (wileyonlinelibrary.com). DOI 10.1002/eej.22289
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feasible operation region for dynamic economic dispatch and reserve monitoring
European Transactions on Electrical Power, 2012Co-Authors: Yutaka Sasaki, Naoto Yorino, Habibuddin M Hafiz, Yoshifumi ZokaAbstract:A large amount of renewable energy penetration will cause serious problem in load dispatch in the Future Power System, where the percentage of controllable generators will decrease, while disturbances will become large, rapid and uncertain. The role of economic dispatch is changing in order to make best use of the ramp-rate capability of generating units. This paper proposes a concept of feasible operation region (FOR) for dynamic economic dispatch (DED) problem. FOR is defined as the region within that the committed generating units are able to operate while matching the predicted load profile. The computation of FOR can detect possible Power imbalance and also can provide accurately the spinning reserves with respect to time. Therefore, the monitoring of FOR with the reserve management on line is quite effective. Then, the paper suggests two step computation method as a new approach for DED. The first step is the computation of FOR for each generator using the most recent real-time prediction for load as well as renewable energy generation, while preserving adequate reserves. The second step is to determine generation schedule inside FOR, where any conventional real-time load dispatch method is useful. The method can specify the amount of reserve required to be called into operation to guarantee reliable load dispatch under restricted circumstances in the Future. Copyright © 2011 John Wiley & Sons, Ltd.
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high speed real time dynamic economic load dispatch
IEEE Transactions on Power Systems, 2012Co-Authors: Naoto Yorino, Yutaka Sasaki, Habibuddin M Hafiz, Yoshifumi ZokaAbstract:A large amount of renewable energy penetration may cause a serious problem in load dispatch in the Future Power System, where the amount of controllable generators will decrease while disturbances increase. Therefore, a new economic load dispatch (ELD) method is required in order to make the best use of the ramp-rate capability of existing generators to cope with the disturbances caused by loads as well as by renewable energy generations. This paper proposes a new dynamic ELD method to meet the general requirements for real-time use in a Future Power System, where load following capability is critically limited. The method is also satisfactory from an economical point of view, and is suitable for high-speed online application due to fast and steady computation time. The proposed method has been successfully tested on several Systems supplying a typical morning to noon demand profile.
Dirk Van Hertem - One of the best experts on this subject based on the ideXlab platform.
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Modeling and control of HVDC grids: A key challenge for the Future Power System
Proceedings - 2014 Power Systems Computation Conference PSCC 2014, 2014Co-Authors: Jef Beerten, Arjen Van Der Meer, Oriol Gomis-bellmunt, Xavier Guillaud, Johan Rimez, Dirk Van HertemAbstract:HVDC technology is developing fast and HVDC grids are increasingly seen as a possible and feasible solution to manage the Future Power System with large amounts of renewables in a secure and cost-effective manner. However, Systems with significant amounts of DC transmission behave in a fundamentally different manner when compared to the traditional AC Power System. The integration of HVDC Systems introduces new fast dynamics on different time frames and adds controllability to the combined System. As a result, the modeling and control of the entire interconnected System needs to be re- evaluated in order to accurately compute the System behavior, both from the AC and DC System. This survey paper gives an overview of the current research in the field of HVDC grids focusing on the interaction of the AC and DC System. The converters and their behavior are discussed in greater detail. A second component which is discussed is the DC breaker. Both devices operate fundamentally different than their AC counterparts. The fast interaction between AC and DC Systems requires changes in the manner in which the modeling and computation of the System is done, both at the DC and the AC side. Although these considerations are needed within all relevant time frames, two relevant cases are specifically addressed in this paper: the connection of offshore wind Power through a HVDC System and the optimal operation of the Power System with a strong presence of HVDC.
