Prof. Joao Pecas-Lopes
FEUP - Faculdade de Engenharia, Universidade do Porto, Portugal
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Academic Career Length
39Years (1988-Present)
(Calculated once Scilit publication data is synced: current year − year of first publication + 1)
Representative Publications
View All Publications1 May 2006 in IEEE Transactions on Power Systems
Journal Article
This paper describes and evaluates the feasibility of control strategies to be adopted for the operation of a microgrid when it becomes isolated. Normally, the microgrid operates in interconnected mode with the medium voltage network; however, scheduled or forced isolation can take place. In such conditions, the microgrid must have the ability to operate stably and autonomously. An evaluation of the need of storage devices and load shedding strategies is included in this paper.
4 October 2010 in Proceedings of the IEEE
Journal Article
Joao Pecas-Lopes
Filipe SoaresPAPedro M. Rocha Almeida
Pedro M. Rocha Almeida
This paper presents a conceptual framework to successfully integrate electric vehicles into electric power systems. The proposed framework covers two different domains: the grid technical operation and the electricity markets environment. All the players involved in both these processes, as well as their activities, are described in detail. Additionally, several simulations are presented in order to illustrate the potential impacts/benefits arising from the electric vehicles grid integration under the referred framework, comprising steady-state and dynamic behavior analysis.
1 July 2007 in Electric Power Systems Research
Journal Article
Joao Pecas-LopesNHN. Hatziargyriou
N. Hatziargyriou
Joseph MutalePDP. Djapic
P. Djapic
NJN. Jenkins
N. Jenkins
30 July 2007 in IEEE Transactions on Power Systems
Journal Article
RARogério G. de Almeida
Rogério G. de Almeida
Joao Pecas-LopesThis paper proposes a control scheme that allows doubly fed induction wind generators (DFIWG) to participate effectively in system frequency regulation. In this control approach, wind generators operate according to a deloaded optimum power extraction curve such that the active power provided by each wind turbine increases or decreases during system frequency changes. The control strategy defined at the wind generator to supply primary frequency regulation capability exploits a combination of control of the static converters and pitch control, adjusting the rotor speed and the active power according to the deloaded optimum power extraction curve. Results obtained in a small isolated system are presented to demonstrate the effectiveness of the approach.
1 May 2013 in Energy
Journal Article
HFHelder Lopes Ferreira
Helder Lopes Ferreira
RGRaquel Garde
Raquel Garde
GFGianluca Fulli
Gianluca FulliWKWil Kling
Wil Kling
Joao Pecas-Lopes2 August 2004 in IEEE Transactions on Power Systems
Journal Article
ECEdgardo D. Castronuovo
Edgardo D. CastronuovoJoao Pecas-LopesThis paper proposes the utilization of water storage ability to improve wind park operational economic gains and to attenuate the active power output variations due to the intermittence of the wind-energy resource. An hourly-discretized optimization algorithm is proposed to identify the optimum daily operational strategy to be followed by the wind turbines and the hydro generation pumping equipments, provided that a wind-power forecasting is available. The stochastic characteristics of the wind power are exploited in the approach developed in order to identify an envelope of recommended operational conditions. Three operational conditions were analyzed and the obtained results are presented and discussed.
About Me
João A. Peças Lopes (PhD) is Full Professor (Professor Catedrático) at the Faculty of Engineering of Porto University, where he teaches in the graduation and post-graduation areas.
He is Associate Director and Coordinator of the TEC4Energy initiative at INESC TEC, an R&D private non-profit organization recognized as Associate Laboratory by the Ministry of Science and with the University of Porto as the main associate.
Prof. Peças Lopes is an IEEE Fellow
He is member of the Power Systems Dynamic Performance Committee of the IEEE PES.
He is member of the Board of the Smart Energy Lab, a CoLAB in Energy Services.
He is since 2012 Chair of the REN award committee.
He is Vice-Presidente of the board of the Portuguese Association for Electric Vehicles.
He is presently Chair of the International Steering Committee of the IEEE Power Tech.
He is member of the Consulting Board of Agência de Energia do Porto (Porto Energy Agency).
He is member of the Scientific Council of FCT.
He is Member of the General Council of APREN (Portuguese Association for Renewable Energies)
He is Editor of the (SEGAN) Sustainable Energy Grids and Networks journal.
He is Honorary member of the editorial board of the IET Energy Conversion and Economics
He is Associate editor do Journal on Modern Power Systems and Clean Energy
He is Associate editor of the China Electrotechnical Society Transactions on Electrical Machines and Systems
Prof. Peças Lopes is convener of the CIGRE WG 6.40 - Electric Vehicles