• 제목/요약/키워드: 조명계통

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Reliability Assessment Considering PLOC and Unified Evaluation via Analytic Network Process (PLOC를 고려한 배전계통의 신뢰도 계산 및 ANP에 의한 종합적 평가)

  • Lee, Buhm;Kim, Yong-Ha
    • Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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    • v.14 no.3
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    • pp.59-67
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    • 2000
  • This paper describes the unified reliability evaluation with partial loss of continuity for Inchon international airport distribution system which is complex and difficult system to implement. To evaluate reliability considering line limitation and voltage drop of the system, PLOC technique which is based on deterministic evaluation technique and failure mode & effective analysis method is employed. And reliability indices calculation method is used. Finally, to evaluate the system performance and to improve the reliability of the system, Analytic network process method is employed. As a result, calculating accurate reliability, finding weak points, and expansion scheduling of the system is possible.

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A Study on the Optimal Parameter Selection of a Power System Stabilizer by Field Tests (현장 시험에 의한 편력계통 안정화장치의 적정 파라메타 설정에 관한 연구)

  • 김경철;임익헌
    • Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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    • v.15 no.3
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    • pp.83-90
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    • 2001
  • This paper resents an algorithm for the optimal parameter selection of a power system stabilizer in a single machine-infinite bus system through the external equivalent transmission line. This method is one of the classical techniques by changing the PSS gain to allocate properly pole-zero positions. All the PSS parameters are obtained by solving a set of algebraic equations for the system constants depend on a variety of machine loadings and system external impedances, the natural oscillation modes, and the damping characteristics. And this algorithm was written in a simple software program using MATLAB.

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Design of Real-Time Power System Simulator for Education using LabVIEW (랩뷰를 이용한 실시간 전력계통 교육용 시뮬레이터 개발)

  • Lee, Kyu-Hwa;Kim, Il-Ju;Choi, Joon-Young;Lee, Song-Keun
    • Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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    • v.24 no.6
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    • pp.177-182
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    • 2010
  • As the technology is developing, the power system is also developing. Nowaday the power system operation has been complicated because of new technology development, new electric equipments and new operation method of the power system. As the electric equipments performance developing, the fault ratio of power system has been decreased. Therefore, new operation method is needed. More complicated the power system operation method, we need more the power system simulator to train and educate the novice power system operators. In this paper, we made real-time power system simulator using LabVIEW through the TCP/IP communication. With this simulator the instructor can simulate the trainee within various unpredicted cases that real power system could happen.

Load Flow Analysis for Distribution Systems Including Distributed Generations (분산형 전원을 포함하는 배전계통을 위한 조류계산 기법 연구)

  • Kwon, Hyung-Seok
    • Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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    • v.19 no.2
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    • pp.100-106
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    • 2005
  • This paper addressed the issue of the three-phase load flow program for electric power distribution systems that include distributed generations. The equipment models were selected in order to consider imbalances among phases for the load flow analysis of distribution systems. Also, power equations and measurement functions are newly derived. The load flow analysis program developed in this paper was tested for the propriety of algorithm and convergence characteristics by case studies on test systems in various scales and types.