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張秉勳(Byunghoon Chang) 대한전기학회 2008 전기학회논문지 Vol.57 No.10
In this paper, the application schemes for coordinated control system of multiple FACTS were presented to enhance the voltage stability around the metropolitan areas. In order to coordinated control of FACTS devices, f-V analysis method which is one of the indices for voltage stability was performed with real time network data which is transferred from SCADA/EMS system. If the system is unstable after contingencies, the new operation set-point of FACTS would be determined using bus sensitivity from tangent vector at voltage instability point. Otherwise, we would determine the new operation set-point of FACTS for considering economical operation, like as active power loss minimization using Optimal Power Flow algorithm. In simulation, the SCADA/EMS 2007's data are used for studying the coordinated control algorithm of multiple FACTS devices that is installed or will be installed in KOREA power system
수도권 순동 무효전력 확보를 위한 FACTS 협조제어 시스템 온라인 설치
장병훈(Byunghoon Chang),문승필(Seungpil Moon),하용구(Yonggu Ha),전웅재(Woongjae Jeon) 대한전기학회 2010 전기학회논문지 Vol.59 No.12
In this paper, the on-line system schemes for coordinated control system of multiple FACTS were presented to enhance the voltage stability around the metropolitan areas. In order to coordinated control system of FACTS devices, MFC on-line system calculates the optimal set point(Vref, Qrev) of FACTS devices using the coordinated control algorithm with real time network data which is transferred from SCADA/EMS system. If the system is unstable after contingencies, the new operation set-point of FACTS would be determined using bus sensitivity from tangent vector at voltage instability point. Otherwise, we would determine the new operation set-point of FACTS for considering economical operation, like as active power loss minimization using Optimal Power Flow algorithm. As the test, MFC(Multiple FACTS Coordinated control) on-line system will be installed in Korea power system.
우리나라 전력계통에서 병렬형 FACTS 투입에 따른 혼잡비용 경감효과 분석
장병훈(Byunghoon Chang),윤종수(Jongsu Yoon),문승필(Seungpil Moon),이원교(Wonkyo Lee),추진부(Jinboo Choo) 대한전기학회 2006 대한전기학회 학술대회 논문집 Vol.2006 No.7
우리나라 전력계통은 비수도권 지역의 발전단가가 수도권 지역의 발전단가보다 값이 싸기 때문에 비수도권에서 수도권지역을 연결해주는 6개의 북상선로에 흐르는 융통조류의 양이 하나의 경제성을 평가하는 기준이 될 수 있다. 본 논문에서는 병렬형 FACTS 투입에 따른 혼잡비용 감소를 융통조류 여유(f-V)해석을 통하여 평가하였다. 수도권 지역에 병렬형 FACTS가 투입된다면 수도권지역에 무효전력 공급으로 인하여 융통조류 증가를 우리나라 중장기 계통에 대해 모의하고, 이때의 발진 비용을 계산하여 FACTS 투입에 따른 혼잡비용의 경감효과를 분석하였다.
張秉勳(Byunghoon Chang),尹鍾秀(Jongsu yoon),韓正烈(Jeongyeol Han),沈鼎雲(Jeongwoon Shim),姜尙均(Sanggyun Kang),李炳峻(Byongjoon Lee) 대한전기학회 2007 전기학회논문지 Vol.56 No.10
The CSC-based HVDC system links the Jeju system to the mainland system. Because CSC-based HVDC is installed in Jeju, the reactive power is needed to transfer active power through the HVDC. In order to supply reactive power, switched capacitors and synchronous condensers are installed in Jeju system. The deterioration of established synchronous condensers, however, causes a reactive power supply capability decline and high maintenance cost. It brings about the instability of Jeju system and the incremental of maintenance and repair costs. In the future the installation of wind generators and additional HVDC system would aggravate the stability of Jeju system. Therefore, it needs to consider a countermeasure against above problems. In this paper, Analysis of several contingencies of Jeju system was performed, and some contingencies caused voltage-reactive power problem was known. CPF method was introduced in order to make countermeasures to replace the synchronous condensers and to solve the voltage-reactive power problem. The location and capacity of reactive power sources were also decided. It could guarantee medium and long term stability of Jeju system.