Journal of Electrical Engineering and Technology

The Korean Institute of Electrical Engineers (대한전기학회)
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A New Approach to Determine the Direction and Cause of Voltage Sag

  • Ahn, Seon-Ju (School of Electrical Engineering, Seoul National University) ;
  • Won, Dong-Jun (School of Electrical Engineering, INHA University) ;
  • Chung, Il-Yop (Center for Advanced Power Systems of Florida State University) ;
  • Moon, Seung-Il (School of Electrical Engineering, Seoul National University)
  • Published : 2008.09.30
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Abstract

Event source locating is very important to improving the power quality level. This paper presents a method to determine the relative location of the voltage sag source according to the cause. For this, the concept of the relative location of the source is defined first. Then, the main causes of voltage sag are classified and their characteristics are discussed. From these investigations, the rules to determine the relative location of event source are proposed for each type and the overall algorithm to identify the relative location and the kind of event source is presented. Finally, the proposed method is applied to the IEEE 13-bus test system and it is verified that the method can help to pinpoint the accurate location of the event source.

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