Title

Analysis of voltage sag in an industrial distribution system of the provincial electricity authority of Thailand

Document Type

Conference Proceeding

Publication Date

12-13-2012

Publication Title

15th International Conference on Harmonics and Quality of Power

First page number:

197

Last page number:

202

Abstract

This paper presents a calculation of voltage sag magnitude, area of vulnerability spectrum and method for SARFI-indices due to a fault in distribution system of Provincial Electricity Authority of Thailand. Voltage sag is related to power quality problems and reliability of utility. Analysis of voltage sag will help utilities to determine and predict the area of vulnerability in distribution system. The SARFI-indices can reveal a reliability of utility to industrial customers. For this paper, voltage sag analysis is performed by using DIgSILENT Power Factory programs for short circuit simulations and presentation of area of vulnerability spectrum. Distribution network is modeled by using actual network data with geographic information system (GIS).

Keywords

Voltage sag, Distribution system, Area of vulnerability spectrum, SARFI-indices, Voltage sag frequency

Language

eng

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