EOL - Comunicações em actas de encontros científicos internacionais
Permanent URI for this collection
Browse
Browsing EOL - Comunicações em actas de encontros científicos internacionais by Issue Date
Now showing 1 - 10 of 62
Results Per Page
Sort Options
- Geometry effects on internal flow patternsPublication . Estanqueiro, Ana; Sancho, F. E. P.; Delgado, J. Dias; Saraiva, J. A. GilThe aim of the work presented in this paper is to look for the changes in internal flows due to the combined action of thermal effects and atmospheric wind (natural ventilation) caused by external geometry. Two different configurations are presented as an illustration of the model application.
- Transient electromechanical characteristics of a CSCF WECPublication . Estanqueiro, Ana; Silva, F. Marques da; Marques, C.; Saraiva, J. A. Gil
- On the effect of the utility grid characteristics in a wind park power output fluctuationsPublication . Estanqueiro, Ana; Aguiar, Ricardo; Saraiva, J. A. Gil; Castro, Rui; Jesus, J.M. Ferreira
- The development and application of a model for power output in a wind parkPublication . Estanqueiro, Ana; Aguiar, Ricardo; Saraiva, J. A. Gil; Castro, Rui; Jesus, J.M. Ferreira
- Uma abordagem espectral à geração de séries correlacionadas de ventoPublication . Aguiar, Ricardo; Estanqueiro, Ana; Saraiva, J. A. Gil
- WEC'S unsteady power output simulationPublication . Estanqueiro, Ana; Jesus, J.M. Ferreira; Saraiva, J. A. GilA numerical method for the simulation of horizontal axis wind turbines (HAWT) was developed. Time-variable wind velocity, and induction generators in steady and transient states, conneted to the utility grid (SEE) were considered.
- The influence of transmission system disturbances on the dynamic behaviour of a wind parkPublication . Castro, Rui; Jesus, J.M. Ferreira; Estanqueiro, Ana; Aguiar, Ricardo; Saraiva, J. A. GilIn this paper an integrated non-linear model of both the wind park and the interconnecction network is presented. The model is an integartion of model previously developed for each componenet of the system, namely wind turbines, induction generators, reactive power compensation system, transformers, feeder and possible local loads connected to the feeder. In order to draw some conclusions regarding the interaction between wind parks and the existing a.c. system, some case studies have been performed using the developed models.
- The use of stiff and flexible rotor models with regard to wind turbines power qualityPublication . Estanqueiro, Ana; Jesus, J.M. Ferreira; Castro, Rui; Saraiva, J. A. Gil
- Modelling machine interaction in a wind park with regard to stability and regulation: present status of NATO SfS Po-MISTRALPublication . Castro, Rui; Estanqueiro, Ana; Saraiva, J. A. Gil; Gomes, Luís; Jesus, J.M. Ferreira
- Including a wind energy conversion system model in electromagnetic transients programPublication . Reis, Francisco A.G.S; Estanqueiro, Ana; Castro, Rui; Jesus, J.M. FerreiraDue to the increasing penetration of wind energy, it is necessary to posses design tools that are able to simulate the impact of these installation in distribution grids. Electromagnetic transients programs are suited to deal with these problems, but a detailed wind energy converter model which is able to carry the transient behaviour of this system is also required. In this paper, an interface between two available software package, EMTP and INDUSAT, containing the digital implementation of these features, is presented. This tool will enable the assessment of the influence that both voltage flickering and power oscillations may have in the performance of distribution networks in face of dispersed wind production. A simple case-study is discussed and the main conclusions are commented.