지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록· 키워드
오류제보하기
Power system frequency is the main index of power quality indicating an abnormal state and disturbances of systems. The nominal frequency is deviated by sudden change in generation and load or faults. Power system is used as frequency relay to detection for off-nominal frequency operation and connecting a generator to an electrical system, and V/F relay to detection for an over-excitation condition. Under these circumstances, power system should maintain the nominal frequency. And frequency and frequency deviation should accurately measure and quickly estimate by frequency measurement device. The well-known classical method, frequency estimation technique based on the DFT, could be produce the gain error in accuracy. To meet the requirements for high accuracy, recently Wavelet transforms and analysis are receiving new attention. The Wavelet analysis is possible to calculate the time-frequency analysis which is easy to obtain frequency information of signals. However, it is difficult to apply in real-time implementation because of heavy computation burdens. Nowadays, the computational methods using the Wavelet function and transformation techniques have been searched on these fields.
In this paper, we apply the Recursive Discrete Wavelet Transform (RDWT) for the frequency estimation. In order to evaluate performance of the proposed technique, the user-defined arbitrary waveforms are used.
In this paper, we apply the Recursive Discrete Wavelet Transform (RDWT) for the frequency estimation. In order to evaluate performance of the proposed technique, the user-defined arbitrary waveforms are used.
목차
Abstract
1. 서론
2. RDWT에 의한 주파수 추정 기법
3. 사례연구
4. 결론
감사의 글
참고문헌
저자소개
참고문헌 (24)
참고문헌 신청
1. [보고서] - Chul Won Park / 2010 / Development of Network Based Frequency Monitoring and Fault Prediction System for Wide Area Intelligent Relaying : 1 ~ 74
2. [학술지(정기간행물)] - Richard A.Evans / 1990 / A Manual/Automatic Synchroni zation Circuit for a 37.5-MVA Steam-Turbine-Driven Generator / IEEE Trans. on Industry Applications 26 (6) : 1081 ~ 1085
3. [단행본] - Tevifik Sezi / 1999 / A New Method for Measuring Power System Frequency / IEEE : 400 ~ 105
4. [학술대회논문] - Chul Won Park / 2010 / Development of Prototype Multifunction IED for Internal Fault Protection of Large Generator / 2010 Energy R&D projects, proposal : 1 ~ 44
5. [학술대회논문] - IEEE Power System Relaying Committee / 2003 / IEEE Guide for Abnormal Frequency Protection for Power Generating Plants(C37.106-2003) : 1 ~ 41
2. [학술지(정기간행물)] - Richard A.Evans / 1990 / A Manual/Automatic Synchroni zation Circuit for a 37.5-MVA Steam-Turbine-Driven Generator / IEEE Trans. on Industry Applications 26 (6) : 1081 ~ 1085
3. [단행본] - Tevifik Sezi / 1999 / A New Method for Measuring Power System Frequency / IEEE : 400 ~ 105
4. [학술대회논문] - Chul Won Park / 2010 / Development of Prototype Multifunction IED for Internal Fault Protection of Large Generator / 2010 Energy R&D projects, proposal : 1 ~ 44
5. [학술대회논문] - IEEE Power System Relaying Committee / 2003 / IEEE Guide for Abnormal Frequency Protection for Power Generating Plants(C37.106-2003) : 1 ~ 41
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UCI(KEPA) : I410-ECN-0101-2013-560-000515060