Title :
Voltage Sag Performance of a Distribution System and Its Improvement
Author :
Naidu, S.R. ; De Andrade, Gilvan V., Jr. ; Costa, Edson G da
Author_Institution :
Fed. Univ. of Campina Grande, Campina Grande, Brazil
Abstract :
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.
Keywords :
Monte Carlo methods; load (electric); power distribution lines; power distribution protection; power supply quality; relay protection; Monte-Carlo procedure; critical line maintenance; distribution feeder; distribution system; protective relay coordination; sag density table; sensitive load bus; subtransmission line; unacceptable sags; voltage sag performance; Circuit faults; Insulators; Monte Carlo methods; Power quality; Protective relaying; Voltage fluctuations; Monte-Carlo method; power quality; voltage sags;
Journal_Title :
Industry Applications, IEEE Transactions on
DOI :
10.1109/TIA.2011.2175885
