Search Results - "Carvalho, Pedro M. S."

A quantum computing approach for minimum loss problems in electrical distribution networks by Silva, Filipe F. C., Carvalho, Pedro M. S., Ferreira, Luís A. F. M.

“…This paper presents an application of a novel quadratic unconstrained binary optimization (QUBO) formulation to the minimum loss problem in distribution…”
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Wind Forecast at Medium Voltage Distribution Networks by Amezquita, Herbert, Carvalho, Pedro M. S., Morais, Hugo

“…Due to the intermittent and variable nature of wind, Wind Power Generation Forecast (WPGF) has become an essential task for power system operators who are…”
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Distribution grid reconfiguration reduces power losses and helps integrate renewables by Lueken, Colleen, Carvalho, Pedro M.S., Apt, Jay

“…A reconfigurable network can change its topology by opening and closing switches on power lines. We use real wind, solar, load, and cost data and a model of a…”
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Data Analytics for Admittance Matrix Estimation of Poorly Monitored Distribution Grids by Leal, Pedro C., Ferreira, Diogo M. V. P., Carvalho, Pedro M. S.

“…Smart grid operations require accurate information on network topology and electrical equipment parameters. This paper proposes estimating such information…”
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Wind Integration in Power Systems: Operational Challenges and Possible Solutions by Xie, Le, Carvalho, Pedro M. S., Ferreira, Luis A. F. M., Liu, Juhua, Krogh, Bruce H., Popli, Nipun, Ilic, Marija D.

“…This paper surveys major technical challenges for power system operations in support of large-scale wind energy integration. The fundamental difficulties of…”
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PV Hosting Capacity Dependence on Harmonic Voltage Distortion in Low-Voltage Grids: Model Validation with Experimental Data by Oliveira, Tiago, Carvalho, Pedro, Ribeiro, Paulo, Bonatto, Benedito

“…This paper introduces a brief analysis on hosting capacity and related concepts as applied to distribution network systems. Furthermore, it addresses the…”
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Distributional costs of wind energy production in Portugal under the liberalized Iberian market regime by Prata, Ricardo, Carvalho, Pedro M.S., Azevedo, Inês L.

“…Wind generation in Portugal and Spain has grown due to a decrease in technology cost and the availability of renewables electricity generation incentives…”
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Can a wind farm with CAES survive in the day-ahead market? by Mauch, Brandon, Carvalho, Pedro M.S., Apt, Jay

“…We investigate the economic viability of coupling a wind farm with compressed air energy storage (CAES) to participate in the day-ahead electricity market at a…”
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Hydro-wind Optimal Operation for Joint Bidding in Day-ahead Market: Storage Efficiency and Impact of Wind Forecasting Uncertainty by Antonio Cerejo, Silvio J. P. S. Mariano, Pedro M. S. Carvalho, Maria R. A. Calado

“…Wind power production is uncertain. The imbalance between committed and delivered energy in pool markets leads to the increase of system costs, which must be…”
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What day-ahead reserves are needed in electric grids with high levels of wind power? by Mauch, Brandon, Apt, Jay, Carvalho, Pedro M S, Jaramillo, Paulina

“…Day-ahead load and wind power forecasts provide useful information for operational decision making, but they are imperfect and forecast errors must be offset…”
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The Concept of Dynamic Hosting Capacity for Distributed Energy Resources: Analytics and Practical Considerations by Castelo de Oliveira, Tiago Elias, Bollen, Math, Ribeiro, Paulo Fernando, de Carvalho, Pedro M. S., Zambroni, Antônio C., Bonatto, Benedito D.

“…The hosting capacity approach is presented as a planning, improving, and communication tool for electrical distribution systems operating under specific…”
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Single-Phase Generation Headroom in Low-Voltage Distribution Networks Under Reduced Circuit Characterization by Carvalho, Pedro M. S., Ferreira, Luis A. F. M., Santana, Joao J. E.

“…The paper addresses the problem of determining the maximum distributed energy resource (DER) capacity that can be connected to low-voltage (LV) networks…”
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An effective method for modeling wind power forecast uncertainty by Mauch, Brandon, Apt, Jay, Carvalho, Pedro M. S., Small, Mitchell J.

“…Wind forecasts are an important tool for electric system operators. Proper use of wind power forecasts to make operating decisions must account for the…”
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Solving Ill-Conditioned State-Estimation Problems in Distribution Grids With Hidden-Markov Models of Load Dynamics by Roca, Ines L., Carvalho, Pedro M. S.

“…Future smart grid operations must rely upon accurate state estimation (SE). Estimation at the distribution level is very challenging since the customary…”
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A QUBO Formulation for Minimum Loss Network Reconfiguration by Silva, Filipe F. C., Carvalho, Pedro M. S., Ferreira, Luis A. F. M., Omar, Yasser

“…We introduce a novel quadratic unconstrained binary optimization (QUBO) formulation for a classical problem in electrical engineering - the optimal…”
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Long-term uncertainties in generation expansion planning: Implications for electricity market modelling and policy by Scott, Ian J., Carvalho, Pedro M.S., Botterud, Audun, Silva, Carlos A.

“…Investment decision making in the energy sector is a complex process due to the inherent long-term uncertainty. This work investigates the importance of…”
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Effects of High Resolution Load Modelling Onto Simulated LV Distribution Losses by Gouveia, Alexandre M. V., Carvalho, Pedro M. S., Dias, Alexandre M. F.

“…In this paper, previous theory and results regarding Low-Voltage (LV) distribution losses are validated through power-flow simulation using real load data with…”
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Improving PV Resilience by Dynamic Reconfiguration in Distribution Grids: Problem Complexity and Computation Requirements by Silva, Filipe F. C., Carvalho, Pedro M. S., Ferreira, Luís A. F. M.

“…The dissemination of low-carbon technologies, such as urban photovoltaic distributed generation, imposes new challenges to the operation of distribution grids…”
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Self-supply and regulated tariffs: Dynamic equilibria between photovoltaic market evolution and rate structures to ensure network sustainability by Prata, Ricardo, Carvalho, Pedro M.S.

“…This research analyses the impacts of substantial changes in energy production driven by self-supply through Photovoltaic (PV) adoption. Three different…”
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Minimal Coordination of Dynamic Reserves for Flexible Operations at Value: The Case of Azores Islands by Ilic, Marija, Carvalho, Pedro M. S., Lessard, Donald

“…In this paper we revisit the need for reserve requirements for the changing industry. We propose that the implementation of efficient, reliable and resilient…”
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