Power system stability prediction using line power flow

Yoon Sung Cho, Gilsoo Jang, Byong Jun Lee, Sae-Hyuk Kwon

Research output: Contribution to journalConference article

Abstract

Power system stability is correlated with system structure, disturbances and operating conditions, and power flows on transmission lines are closely related with those conditions. This paper proposes a methodology to identify correlative power flows for power system transient and small-signal stability prediction. In transient stability sense, the Critical Clearing Time is used to select some dominant contingencies, and Transient Stability Prediction index is proposed for the quantitative comparison among the contingencies. Also, this paper discusses a methodology to identify crucial transmission lines of which flows are related with small-signal stability by introducing a sensitivity factor based on eigenvalue sensitivity technique. On-line monitoring of the selected lines enables to predict transient stability in real-time. Also, a procedure to make a priority list of monitored transmission lines is proposed. The procedure is applied to a test system, and it shows capabilities of the proposed method.

Original languageEnglish
Pages (from-to)997-1002
Number of pages6
JournalIFAC Proceedings Volumes (IFAC-PapersOnline)
Volume36
Issue number20
DOIs
Publication statusPublished - 2003 Jan 1
Event5th IFAC Symposium on Power Plants and Power Systems Control 2003 - Seoul, Korea, Republic of
Duration: 2003 Sep 152003 Sep 19

Keywords

  • Cct
  • Eigenvalue
  • Sensitivity
  • Small-signal stability
  • Transient stability
  • Tsp

ASJC Scopus subject areas

  • Control and Systems Engineering

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