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Voltage Sags: Statistical Evaluation of Monitoring Results based on Predicted Stochastic Simulation

Thiago Clé de Oliveira ; José Maria Carvalho Filho ; Jose Policarpo Abreu ; Roberto Chouhy Leborgne (Institutionen för energi och miljö, Elteknik)
12th International Conference on Harmonics and Quality of Power (2006)
[Konferensbidrag, refereegranskat]

This paper presents a methodology specially developed for the estimation of voltage sag characteristics such as magnitude and frequency. The aim of this methodology is to evaluate sags monitoring results based on a stochastic assessment of long-term voltage sag indices. The measured sag indices are evaluated by means of two statistic tools, namely the confidence interval and analysis of variance based on hypothesis testing. A case study based on the evaluation of a six-month monitoring period shows the applicability of the proposed methodology.

Nyckelord: Power quality, stochastic assessment, voltage sags, voltage dips.



Denna post skapades 2006-10-26.
CPL Pubid: 22931

 

Institutioner (Chalmers)

Institutionen för energi och miljö, Elteknik (2005-2017)

Ämnesområden

Elkraftteknik

Chalmers infrastruktur