전력시스템 진동 해석을 위한 RMS 필터링 기반 Prony 분석 차수 선택

최윤성; 류신호; 김성환; 이동호

doi:10.5370/KIEEP.2023.72.2.127

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저널정보

대한전기학회
전기학회논문지 P 학술저널
전기학회논문지 제72P권 제2호
2023.6 127 - 132 (6page)
DOI : 10.5370/KIEEP.2023.72.2.127

저자정보

최윤성 (Mokpo National University)
류신호 (Protech EMS)
김성환 (Mokpo National University)
이동호 (Mokpo National University)

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This paper aims to investigate RMS filtering and Prony analysis for detecting oscillation frequencies in order to evaluate the stability and reliability of power systems, proposing a method for selecting the polynomial order in Prony analysis. Among the oscillation detection methods using data, Prony analysis is commonly utilized due to its precision and capability of providing abundant information such as oscillation frequency and damping degree, but there is no standard for selecting the polynomial order. The order needs to be selected based on factors such as data volume, sampling interval, and noise level. In this paper, the Hann Window is applied in each section to select the appropriate order and the dominant oscillation mode is estimated through RMS filtering. The order that derives the estimated frequency results is applied in Prony analysis. The proposed method is demonstrated to be effective with known test data and actual measurement data.

#Prony #RMS Filter #Power System Oscillation #Hann Window #Fourier Transform