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논문 기본 정보

자료유형
학술저널
저자정보
Chul-Won Park (강릉원주대학교) Dong-Kwang Shin (성균관대학교) Chul-Hwan Kim (성균관대학교) Hak-Man Kim (인천대학교) Yoon Sang Kim (한국기술교육대학교)
저널정보
대한전기학회 Journal of Electrical Engineering & Technology Journal of Electrical Engineering & Technology Vol.6 No.4
발행연도
2011.7
수록면
439 - 446 (8page)

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초록· 키워드

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Frequency is an important operating parameter for the protection, control, and stability of a power system. Thus, it must be maintained very close to its nominal frequency. Due to the sudden change in generation and loads or faults in a power system, however, frequency deviates from its nominal value. An accurate monitoring of the power frequency is essential for optimum operation and prevention of wide area blackout. Most conventional frequency estimation schemes are based on the DFT filter. In these schemes, the gain error could cause defects when the frequency deviates from the nominal value. We present an advanced frequency estimation technique using gain compensation to enhance the DFT filter-based technique. The proposed technique can reduce the gain error caused when the frequency deviates from the nominal value. Simulation studies are performed using both the data from EMTP-RV software and the user-defined arbitrary signals to demonstrate the effectiveness of the proposed algorithm. Results show that the proposed algorithm achieves good performance under both steady state tests and dynamic conditions.

목차

Abstract
1. Introduction
2. Advanced Frequency Estimation Algorithm
3. Simulation Studies
4. Conclusion
Acknowledgements
References

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