KIEE - The Transactions of the Korean Institute of Electrical Engineers

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The Transactions of the Korean Institute of Electrical Engineers

The Transactions of the Korean Institute of Electrical Engineers

ISO Journal TitleTrans. Korean. Inst. Elect. Eng.

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Title	Method to Estimate Expected Sag Frequency Considering the Operating Condition of Power System
Authors	손정대(Son, Jeongdae) ; 이계병(Lee, Kyebyung) ; 박창현(Park, Chang-Hyun)
DOI	https://doi.org/10.5370/KIEE.2016.65.3.382
Page	pp.382-387
ISSN	1975-8359
Keywords	Area of vulnerability ; Load factor ; Operating condition ; Power quality ; Voltage sag assessment
Abstract	This paper deals with the assessment of voltage sags regarding the variation of system operating conditions. In general, voltage sag assessment is performed by assuming the constant operating condition throughout the year. However, the assumption can lead to assessment errors in case of considerable changes of system operation condition. This paper presents a method to estimate ESF(expected sag frequency) considering the operating conditions according to the changes of power demand throughout the year.

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