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On-line functions for security operation of interconnected systems having large...

Maria Helena Osório Pestana de Vasconcelos; João Abel Peças Lopes

This paper presents a methodology for the implementation of new EMS tools aiming to assist, in real time, transmission system operators to avoid dynamic security problems, after short-circuits that may lead to large wind power losses. In order to overcome high computational efforts, that are required by conventional dynamic simulation tools, the proposed methodology was developed using automatic learning techni...


Security evaluation of interconnected systems with large wind power production ...

João Abel Peças Lopes; Maria Helena Osório Pestana de Vasconcelos

This paper presents a new methodology to evaluate, within the framework of on-line security assessment, the dynamic behavior of interconnected power systems having an increased penetration of wind power production. This approach exploits functional knowledge generated off-line, the Regression Tree (RT) automatic learning method to perform Feature Subset Selection (FSS) and Artificial Neural Networks (ANN) to pr...


ANN design for fast security evaluation of interconnected systems with large wi...

Maria Helena Osório Pestana de Vasconcelos; João Abel Peças Lopes

This paper presents the performed steps to design an Artificial Neural Network (ANN) tool, able to evaluate, within the framework of on-line security assessment, the dynamic security of interconnected power systems having an increased penetration of wind power production. This approach exploits functional knowledge generated off-line, the Linear Regression (LR) variable selection stepwise method to perform auto...


Security assessment of interconnected systems having large wind power production

João Abel Peças Lopes; Maria Helena Osório Pestana de Vasconcelos


A general approach for security monitoring and preventive control of networks w...

Maria Helena Osório Pestana de Vasconcelos; José Nuno Moura Marques Fidalgo; João Abel Peças Lopes


Dynamic security evaluation functions in the more care project

João Abel Peças Lopes; N. Hatziargyriou; Maria Helena Osório Pestana de Vasconcelos; José Nuno Moura Marques Fidalgo; G. Damianos; E. Karapidakis


Artificial intelligence techniques applied to dynamic security assessment of is...

N. Hatziargyriou; E. Karapidakis; João Abel Peças Lopes; Maria Helena Osório Pestana de Vasconcelos; José Nuno Moura Marques Fidalgo; J. Stefanakis


On-line dynamic security assessment based on kernel regression trees

João Abel Peças Lopes; Maria Helena Osório Pestana de Vasconcelos


On-line dynamic security assessment of isolated networks integrating large wind...

João Abel Peças Lopes; N. Hatziargyriou; Maria Helena Osório Pestana de Vasconcelos; E. Karapidakis; José Nuno Moura Marques Fidalgo


Utilização de árvores de regressão híbridas na monitorização da segurança dinâm...

João Abel Peças Lopes; Maria Helena Osório Pestana de Vasconcelos


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    Financiadores do RCAAP

Fundação para a Ciência e a Tecnologia Universidade do Minho   Governo Português Ministério da Educação e Ciência Programa Operacional da Sociedade do Conhecimento União Europeia