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Phasor Based Voltage Sag Monitoring and Characterisation

Roberto Chouhy Leborgne (Institutionen för energi och miljö, Elteknik) ; Daniel Karlsson
Eighteenth International Conference and Exhibition on Electricity Distribution, CIRED 2005, Technical Reports - Session 1: Network Components; Turin; Italy; 6 June 2005 through 9 June 2005 (05379989). Vol. 2 (2005), 2005-11034, p. 271-274.
[Konferensbidrag, refereegranskat]

This article addresses a wide three-phase voltage sag characterisation, including sag magnitude, phase-angle jump, and duration. A signal-processing algorithm is proposed to obtain voltage sag characteristics for phase voltages and positive sequence voltage. The proposed methodology is applied to a set of actual measurements obtained from a power quality monitor and from a synchrophasor measurement unit (PMU). Sag characterisation from both data sources are compared, indicating advantages and drawbacks of each device. Results show that data from PQ-monitors permit a more complete disturbance characterisation, however results from data obtained by PMUs are promissory for sag characterisation when the recording frequency of the PMU is increased.

Nyckelord: power quality, voltage sags, voltage dips



Denna post skapades 2006-08-25. Senast ändrad 2016-08-15.
CPL Pubid: 5893

 

Institutioner (Chalmers)

Institutionen för energi och miljö, Elteknik

Ämnesområden

Elektroteknik och elektronik

Chalmers infrastruktur

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