지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학위논문
- 저자정보
- 지도교수
- 權世爀
- 발행연도
- 2014
- 저작권
- 고려대학교 논문은 저작권에 의해 보호받습니다.
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In modern society, the number of industrial customers using equipment sensitive particularly to voltage sags is rapidly increasing. As voltage sags can cause loss of information as well as false operation of the control device, it results in the vast economic damage in industrial processes.
One way to mitigate voltage sags in the sensitive loads is the installation of distributed generation (DGs) on the periphery of these loads. In addition, renewable energy sources are currently in the spot light as the potential solution for the energy crisis and environmental issues. In particular, wind power generation which is connected to a grid is rising rapidly because it is energy efficient and also economically feasible compared to other renewable energy sources.
On the basis of the above information, in this paper, with Wind Turbine Generators (WTGs) installed nearby the sensitive load, the analysis of the mitigating effect comparison by types of WTGs is performed using voltage sag assessment on the IEEE-30 bus test system. That is, the areas of vulnerability according to types of WTGs are expected to be different by how much reactive power is produced or consumed as WTG reactive power capability is related to the types of WTGs. Using the concept of ‘Vulnerable area’ with the failure rate for buses and lines, the annual number of voltage sags at the sensitive load with the installation of WTGs per type is studied.
This research will be anticipated to be useful data when determining the interconnection of wind power generation in the power system with the consideration of voltage sags.
One way to mitigate voltage sags in the sensitive loads is the installation of distributed generation (DGs) on the periphery of these loads. In addition, renewable energy sources are currently in the spot light as the potential solution for the energy crisis and environmental issues. In particular, wind power generation which is connected to a grid is rising rapidly because it is energy efficient and also economically feasible compared to other renewable energy sources.
On the basis of the above information, in this paper, with Wind Turbine Generators (WTGs) installed nearby the sensitive load, the analysis of the mitigating effect comparison by types of WTGs is performed using voltage sag assessment on the IEEE-30 bus test system. That is, the areas of vulnerability according to types of WTGs are expected to be different by how much reactive power is produced or consumed as WTG reactive power capability is related to the types of WTGs. Using the concept of ‘Vulnerable area’ with the failure rate for buses and lines, the annual number of voltage sags at the sensitive load with the installation of WTGs per type is studied.
This research will be anticipated to be useful data when determining the interconnection of wind power generation in the power system with the consideration of voltage sags.
목차
제 1 장 서 론 11.1 연구 배경 11.2 연구 개요 31.3 논문 구성 5제 2 장 타입별 풍력 발전기 모델링 62.1 풍력 발전기 타입별 무효전력 특성 62.2 풍속에 따른 유효전력 출력 모델링 82.3 풍력 발전기 타입별 무효전력 출력 모델링 102.4 다양한 풍속 조건에 따른 타입별 무효전력 출력량 비교 12제 3 장 순간전압강하 평가 173.1 취약지역(Area of vulnerability) 173.2 전압강하 계산식을 이용한 취약지역 계산 193.2.1 사고 전압식 유도 203.2.2 4가지 사고 전압식 구성 243.2.3 한계점(Critical point) 찾기 273.3 순간전압강하 평가 303.4 풍력 발전기를 포함한 순간전압강하 평가 32제 4 장 사례연구 344.1 IEEE-30 모의계통 구성 344.2 취약지역 계산을 위한 특정 민감 부하 모선 선정 364.3 연간 풍속 데이터를 이용한 순간전압강하 평가 374.3.1 시뮬레이션 개요 374.3.2 다양한 풍속 조건에 따른 타입별 취약지역 길이 비교 394.3.3 풍력 발전기가 설치될 지역의 연간 풍속 데이터 484.3.4 타입별 연간 순간전압강하 발생 횟수 추산 51제 5 장 결 론 54참고 문헌 56
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