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논문 기본 정보

자료유형
학술저널
저자정보
Mose Kang (Chonbuk National University) Jinsik Lee (Chonbuk National University) Kyeon Hur (Yonsei University) Sang Ho Park (Korea Electric Power Research Institute) Youngdo Choy (Korea Electric Power Research Institute) Yong Cheol Kang (Chonbuk National University)
저널정보
대한전기학회 Journal of Electrical Engineering & Technology Journal of Electrical Engineering & Technology Vol.10 No.6
발행연도
2015.11
수록면
2,221 - 2,227 (7page)

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초록· 키워드

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To arrest a frequency nadir, a stepwise inertial control (SIC) scheme generates a constant active power reference signal of a wind turbine generator (WTG) immediately after a disturbance and maintains it for the predetermined time. From that point, however, the reference of a WTG abruptly decreases to restore the rotor speed for the predefined period. The abrupt decrease of WTG output power will inevitably cause a second frequency dip. In this paper, we propose a modified SIC scheme of a doubly-fed induction generator (DFIG) that can prevent a second frequency dip. A reference value of the modified SIC scheme consists of a reference for the maximum power point tracking control and a constant value. The former is set to be proportional to the cube of the rotor speed; the latter is determined so that the rotor speed does not reach the minimum operating limit by considering the mechanical power curve of a DFIG. The performance of the modified SIC was investigated for a 100 MW aggregated DFIG-based wind power plant under various wind conditions using an EMTP-RV simulator. The results show that the proposed SIC scheme significantly increases the frequency nadir without causing a second frequency dip.

목차

Abstract
1. Introduction
2. Modified Stepwise Inertial Control for a DFIG
3. Model system
4. Case studies
5. Conclusions
References

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