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.
논문 기본 정보
- 자료유형
- 학위논문
- 저자정보
- 지도교수
- 강용철
- 발행연도
- 2013
- 저작권
- 전북대학교 논문은 저작권에 의해 보호받습니다.
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초록· 키워드
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A power system should supply the electricity with high quality and high reliability. To do this, the system frequency should be kept within the allowed limits. If a power consumption is larger than power production, synchronous generators (SGs) with spinning reserve power provide the frequency support such as the inertial response, the primary controls, and the secondary control. As a result, it is possible to restore the frequency to its allowed limits.
For a power system with high wind penetration, the system inertia is significantly reduced due to the maximum power point tracking control based operation of variable speed wind generators (WGs). A lower system inertia will result in faster frequency deviations and under frequency load shedding after a large disturbance such as a generator tripping.
This paper proposes a virtual inertial control for a wind power plant (WPP) based on the maximum rate of change of frequency loop (ROCOF) to enhance the inertial response of a power system with high wind penetration. The algorithm maintains the maximum value of the ROCOF loop to release more kinetic energy stored in the rotating mass of the turbine blades in initial period of the disturbance. This paper assumes that auxiliary loops, i.e. the maximum ROCOF loop are implemented in the power controller of a WGs. Moreover, the WPP is operating in MPPT mode prior to the disturbance and thus the WPP has no reserve power.
The performance of the algorithm is investigated in a model system, which consists of a doubly fed induction generator-based WPP and five SGs using an EMTP-RV simulator. The results indicate that the proposed algorithm can reduce the frequency nadir more than a conventional algorithm after a generator tripping.
For a power system with high wind penetration, the system inertia is significantly reduced due to the maximum power point tracking control based operation of variable speed wind generators (WGs). A lower system inertia will result in faster frequency deviations and under frequency load shedding after a large disturbance such as a generator tripping.
This paper proposes a virtual inertial control for a wind power plant (WPP) based on the maximum rate of change of frequency loop (ROCOF) to enhance the inertial response of a power system with high wind penetration. The algorithm maintains the maximum value of the ROCOF loop to release more kinetic energy stored in the rotating mass of the turbine blades in initial period of the disturbance. This paper assumes that auxiliary loops, i.e. the maximum ROCOF loop are implemented in the power controller of a WGs. Moreover, the WPP is operating in MPPT mode prior to the disturbance and thus the WPP has no reserve power.
The performance of the algorithm is investigated in a model system, which consists of a doubly fed induction generator-based WPP and five SGs using an EMTP-RV simulator. The results indicate that the proposed algorithm can reduce the frequency nadir more than a conventional algorithm after a generator tripping.
목차
1. 서 론 12. 풍력발전기의 기존 가상관성제어 52.1 주파수 변화율을 이용한 가상관성제어 52.2 주파수의 변화율과 변화량을 이용한 가상관성제어 103. 주파수의 최대 변화율을 이용한 가상관성제어 134. 모의 계통 164.1 동기발전기 174.2 풍력단지 185. 사례 연구 215.1 풍력 수용률: 16.67 % 235.1.1 사례 1: 11 m/s 235.1.2 사례 2: 8 m/s 275.1.3 사례 3: 6 m/s 305.2 풍력 수용률: 20 % 335.2.1 사례 4: 11 m/s 335.2.2 사례 5: 8 m/s 365.2.3 사례 6: 6 m/s 396. 결 론 42참 고 문 헌 43
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