The Experts below are selected from a list of 39417 Experts worldwide ranked by ideXlab platform
Göran Andersson - One of the best experts on this subject based on the ideXlab platform.
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Analyzing operational flexibility of Electric Power Systems
International Journal of Electrical Power and Energy Systems, 2015Co-Authors: Andreas Ulbig, Göran AnderssonAbstract:Operational flexibility is an important property of Electric Power Systems and plays a crucial role for the transition of today's Power Systems, many of them based on fossil fuels, towards Power Systems that can efficiently accommodate high shares of variable Renewable Energy Sources (RES). The availability of sufficient operational flexibility is a necessary prerequisite for the effective grid integration of large shares of fluctuating Power feed-in from variable RES, especially wind Power and Photovoltaics (PV). This paper establishes the necessary framework for quantifying and visualizing the technically available operational flexibility of individual Power system units and ensembles thereof. Necessary metrics for defining Power system operational flexibility, namely the Power ramp-rate, Power and energy capability of generators, loads and storage devices, are presented. The flexibility properties of different Power system unit types, e.g. load, generation and storage units that are non-controllable, curtailable or fully controllable are qualitatively analyzed and compared to each other. Quantitative results and flexibility visualizations are presented for intuitive Power system examples. An outlook for the usage of the here proposed methods in Power system control centers is given.
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analyzing operational flexibility of Electric Power Systems
Power Systems Computation Conference, 2014Co-Authors: Andreas Ulbig, Göran AnderssonAbstract:Operational flexibility is an important property of Electric Power Systems and plays a crucial role for the transition of today's Power Systems, many of them based on fossil fuels, towards Power Systems that can efficiently accommodate high shares of variable Renewable Energy Sources (RES). The availability of sufficient operational flexibility in a given Power system is a necessary prerequisite for the effective grid integration of large shares of fluctuating Power in-feed from variable RES, especially wind Power and Photovoltaics (PV). This paper establishes the necessary framework for quantifying and visualizing the technically available operational flexibility of individual Power system units and ensembles thereof. Necessary metrics for defining Power system operational flexibility, namely the Power ramp-rate, Power and energy capability of generators, loads and storage devices, are presented. The flexibility properties of different Power system unit types, e.g. load, generation and storage units that are non-controllable, curtailable or fully controllable are qualitatively analyzed and compared to each other. Quantitative results and flexibility visualizations are presented for intuitive Power system examples.
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On Operational Flexibility in Transmission Constrained Electric Power Systems
IEEE Power & Energy Society General Meeting, 2012Co-Authors: Andreas Ulbig, Göran AnderssonAbstract:Operational flexibility is an important property of Electric Power Systems. The term flexibility is widely used in the context of Power Systems although at times without a proper definition. The role of operational flexibility for the transition of existing Power Systems, many of them based on fossil fuels, towards Power Systems effectively accommodating high shares of variable Renewable Energy Sources (RES) has been widely recognized. Availability of sufficient operational flexibility is a necessary precondition for the grid integration of large shares of Power in-feed from variable RES, for example wind Power and photovoltaics (PV). The paper analyzes the role of operational flexibility in Power Systems. Necessary flexibility metrics for categorizing different types of operational flexibility are discussed. A new methodology for assessing the technically available operational flexibility is presented. Qualitative insights are derived, notably regarding the limits of RES integration for a given Power system with its specific flexibility properties. An extensive simulation study is performed, assessing the role that operational flexibility has for the mitigation of challenges, namely curtailment, arising from high shares of variable RES in-feed. Index
H Yoshida - One of the best experts on this subject based on the ideXlab platform.
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a particle swarm optimization for reactive Power and voltage control in Electric Power Systems
Congress on Evolutionary Computation, 2001Co-Authors: Yoshikazu Fukuyama, H YoshidaAbstract:This paper presents a particle swarm optimization (PSO) for reactive Power and voltage control (RPVC) in Electric Power Systems. RPVC can be formulated as a mixed-integer nonlinear optimization problem (MINLP). The proposed method expands the original PSO to handle a MINLP and determines an RPVC strategy with continuous and discrete control variables such as automatic voltage regulator (AVR) operating values of generators, tap positions of on-load tap changer (OLTC) of transformers, and the amount of reactive Power compensation equipment (RPCE). The feasibility of the proposed method is demonstrated and compared with reactive tabu search (RTS) and the enumeration method on practical Power system models with promising results.
M E Elhawary - One of the best experts on this subject based on the ideXlab platform.
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a survey of particle swarm optimization applications in Electric Power Systems
IEEE Transactions on Evolutionary Computation, 2009Co-Authors: M R Alrashidi, M E ElhawaryAbstract:Particle swarm optimization (PSO) has received increased attention in many research fields recently. This paper presents a comprehensive coverage of different PSO applications in solving optimization problems in the area of Electric Power Systems. It highlights the PSO key features and advantages over other various optimization algorithms. Furthermore, recent trends with regard to PSO development in this area are explored. This paper also discusses PSO possible future applications in the area of Electric Power Systems and its potential theoretical studies.
Andreas Ulbig - One of the best experts on this subject based on the ideXlab platform.
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Analyzing operational flexibility of Electric Power Systems
International Journal of Electrical Power and Energy Systems, 2015Co-Authors: Andreas Ulbig, Göran AnderssonAbstract:Operational flexibility is an important property of Electric Power Systems and plays a crucial role for the transition of today's Power Systems, many of them based on fossil fuels, towards Power Systems that can efficiently accommodate high shares of variable Renewable Energy Sources (RES). The availability of sufficient operational flexibility is a necessary prerequisite for the effective grid integration of large shares of fluctuating Power feed-in from variable RES, especially wind Power and Photovoltaics (PV). This paper establishes the necessary framework for quantifying and visualizing the technically available operational flexibility of individual Power system units and ensembles thereof. Necessary metrics for defining Power system operational flexibility, namely the Power ramp-rate, Power and energy capability of generators, loads and storage devices, are presented. The flexibility properties of different Power system unit types, e.g. load, generation and storage units that are non-controllable, curtailable or fully controllable are qualitatively analyzed and compared to each other. Quantitative results and flexibility visualizations are presented for intuitive Power system examples. An outlook for the usage of the here proposed methods in Power system control centers is given.
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analyzing operational flexibility of Electric Power Systems
Power Systems Computation Conference, 2014Co-Authors: Andreas Ulbig, Göran AnderssonAbstract:Operational flexibility is an important property of Electric Power Systems and plays a crucial role for the transition of today's Power Systems, many of them based on fossil fuels, towards Power Systems that can efficiently accommodate high shares of variable Renewable Energy Sources (RES). The availability of sufficient operational flexibility in a given Power system is a necessary prerequisite for the effective grid integration of large shares of fluctuating Power in-feed from variable RES, especially wind Power and Photovoltaics (PV). This paper establishes the necessary framework for quantifying and visualizing the technically available operational flexibility of individual Power system units and ensembles thereof. Necessary metrics for defining Power system operational flexibility, namely the Power ramp-rate, Power and energy capability of generators, loads and storage devices, are presented. The flexibility properties of different Power system unit types, e.g. load, generation and storage units that are non-controllable, curtailable or fully controllable are qualitatively analyzed and compared to each other. Quantitative results and flexibility visualizations are presented for intuitive Power system examples.
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On Operational Flexibility in Transmission Constrained Electric Power Systems
IEEE Power & Energy Society General Meeting, 2012Co-Authors: Andreas Ulbig, Göran AnderssonAbstract:Operational flexibility is an important property of Electric Power Systems. The term flexibility is widely used in the context of Power Systems although at times without a proper definition. The role of operational flexibility for the transition of existing Power Systems, many of them based on fossil fuels, towards Power Systems effectively accommodating high shares of variable Renewable Energy Sources (RES) has been widely recognized. Availability of sufficient operational flexibility is a necessary precondition for the grid integration of large shares of Power in-feed from variable RES, for example wind Power and photovoltaics (PV). The paper analyzes the role of operational flexibility in Power Systems. Necessary flexibility metrics for categorizing different types of operational flexibility are discussed. A new methodology for assessing the technically available operational flexibility is presented. Qualitative insights are derived, notably regarding the limits of RES integration for a given Power system with its specific flexibility properties. An extensive simulation study is performed, assessing the role that operational flexibility has for the mitigation of challenges, namely curtailment, arising from high shares of variable RES in-feed. Index
Ramteen Sioshansi - One of the best experts on this subject based on the ideXlab platform.
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coordinated expansion planning of natural gas and Electric Power Systems
IEEE Transactions on Power Systems, 2018Co-Authors: Bining Zhao, Antonio J Conejo, Ramteen SioshansiAbstract:The interdependence between natural gas and Electric Power Systems is becoming increasingly tight, as the share of natural gas-fired units increases. Within this context, this paper addresses the coordinated expansion planning of natural gas and Power Systems. We analyze the tradeoff of building natural gas-related facilities (e.g., natural gas pipelines and natural gas-fired generation units) versus Electric-Power-related facilities (e.g., transmission lines and other generation units). We use a two-stage stochastic optimization model that provides an appropriate balance between accuracy and computational tractability and represents uncertainty pertaining to Electricity and natural gas demands. We show the importance of representing uncertainty by computing the value of stochastic solution, which is significant. We analyze the functioning of the model through a small example and a case study based on the IEEE 118-bus system. Computational results confirm the need for detailed representation of both the natural gas and Power Systems to achieve investment decisions that are well coordinated and optimal.
