대한전기학회:학술대회논문집 (Proceedings of the KIEE Conference)

대한전기학회 (The Korean Institute of Electrical Engineers)
권호 표지

온라인 동적 안전도평가 시스템의 개발

Development of On-line Dynamic Security Assessment System

  • Nam, H.K. (Department of Electrical Engineering, Chonnam National University) ;
  • Song, S.G. (Department of Electrical Engineering, Chonnam National University) ;
  • Shim, K.S. (Department of Electrical Engineering, Seonam University) ;
  • Moon, C.J. (Department of Electrical Engineering, Mokpo National University)
  • 발행 : 2001.11.16
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초록

This paper presents a new systematic contingency selection, screening and ranking method for on-line transient security assessment. Transient stability of a particular generator is influenced most by fault near it. Fault at the transmission lines adjacent to the generators are selected as contingency. Two screening methods are developed using the sensitivity of modal synchronizing torque coefficient and computing an approximate critical clearing time(CCT) without time simulation. The first method, which considers only synchronizing power, may mislead in some cases since it does not consider the acceleration power. The approximate CCT method, which consider both the acceleration and deceleration power, worked well. Finally the Single Machine Equivalent(SIME) method is implemented using IPLAN of PSS/E for detailed stability analysis.

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