Analysis of the Harmonic Resonance of Primary Restorative Transmission System Using PSCAD/EMTDC

PSCAD/EMTDC를 이용한 시송전계통의 고조파 공진현상 분석

  • Published : 2003.11.13

Abstract

Power system restoration following a partial or complete blackout starts with energizing of primary transmission lines. Because system changed rapidly during early restoration process, transformer energization and load pickup is executed to maintain the power system stability. However unexpected problem such as harmonic overvoltage may be arisen during energizing transformer. The reason of harmonic overvoltage is known as transformer saturation and magnetizing in-rush current and so on, but it is difficult to estimate the condition of occurrence. This paper describes the analysis of the harmonic overvoltage while unloaded transformer is energized using PSCAD/EMTDC.

Keywords