Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)
- 2005.07a
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- Pages.220-222
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- 2005
Analysis of the Harmonic Resonance during Restoration of Primary Restorative Transmission System
시송전계통 탁구과정에서의 고조파 공진 현상에 대한 고찰
Abstract
Power system restoration following a wide area or complete blackout starts with energizing primary restorative transmission systems. During this primary restoration process, unexpected over-voltage may happen due to nonlinear interaction between the unloaded transformer and the transmission system. This is known as the harmonic resonance phenomenon that may cause burning out of transformer or other devices. Since the harmonic resonance originates from the nonlinear characteristics, it is very difficult to predict the occurrence of this phenomenon. This paper reports the possible existence of the harmonic resonance in Korean power system. Analysis of the harmonic over-voltage is presented based on the various simulations using PSCAD/EMTDC.
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