Voltage Sag Performance of a Distribution System and Its Improvement

The voltage sag performance of a distribution system has been investigated. A Monte-Carlo procedure has been used to construct the sag density table and estimate the number of unacceptable sags per annum at a sensitive load bus. The subtransmission lines and distribution feeders that largely contrib...

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Bibliographic Details
Published in:IEEE transactions on industry applications 2012-01, Vol.48 (1), p.218-224
Main Authors: Naidu, S. R., de Andrade, G. V., da Costa, E. G.
Format: Article
Language:English
Subjects:
Circuit faults
Construction industry
Density
Electric potential
Feeders
Insulators
Maintenance
Monte Carlo methods
Monte-Carlo method
Power quality
Protective relaying
Sag
Tables (data)
Voltage
Voltage fluctuations
voltage sags
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Summary:The voltage sag performance of a distribution system has been investigated. A Monte-Carlo procedure has been used to construct the sag density table and estimate the number of unacceptable sags per annum at a sensitive load bus. The subtransmission lines and distribution feeders that largely contribute to the unacceptable sags have been identified. It has been shown that proper protective relay coordination and adequate maintenance of the critical lines and feeders result in significant improvement of the voltage sag performance of the distribution system.
ISSN:0093-9994
1939-9367
DOI:10.1109/TIA.2011.2175885