Assessment of system voltage sag performance based on the concept of area of severity

C. H. Park, J. H. Hong, G. Jang

Research output: Contribution to journalArticlepeer-review

34 Citations (Scopus)


This study presents a new approach for voltage sag assessment based on the concept of 'area of severity' (AOS). The network regions, where the fault occurrences will simultaneously lead to voltage sags at different sensitive load points, can be determined by performing an AOS analysis. The impact rankings of the network lines and buses are also addressed. The impact rankings are determined according to the contribution degree of each line and bus faults to the total expected number of voltage sags in the power system. The concepts of AOS and the impact ranking are useful in establishing efficient planning for the mitigation of voltage sags, and for evaluating the relationship between sensitive load points and system voltage sag performance.

Original languageEnglish
Article numberIGTDAW000004000006000683000001
Pages (from-to)683-693
Number of pages11
JournalIET Generation, Transmission and Distribution
Issue number6
Publication statusPublished - 2010 Jan

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering


Dive into the research topics of 'Assessment of system voltage sag performance based on the concept of area of severity'. Together they form a unique fingerprint.

Cite this