System vulnerability as a concept to assess power system dynamic security

Journal Article · Sun May 01 04:00:00 EDT 1994 · IEEE Transactions on Power Systems (Institute of Electrical and Electronics Engineers); (United States)

DOI:https://doi.org/10.1109/59.317643· OSTI ID:7260146

Fouad, A A; Zhou, Qin; Vittal, V ^[1]

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1. Iowa State Univ., Ames, IA (United States)

The concept of system vulnerability is introduced as a new framework for power system dynamic security assessment. This new concept combines information on the level of security and its trend with changing system condition. In this paper the transient energy function (TEF) method is used as a tool of analysis. The energy margin [Delta]V is used as an indicator of the level of security, and its sensitivity ([partial derivative][Delta]V/[partial derivative]p) to a changing system parameter p as an indicator of its trend. The thresholds for acceptable levels of the security indicator ([Delta]V) and its trend ([partial derivative][Delta]V/[partial derivative]p) are related to the stability limits of a critical system parameter. A method is proposed to determine these thresholds using heuristic techniques derived from operating practices and policies for a change in plant generation. Results from the IEEE 50 generator test system are presented to illustrate the procedure.

• OSTI ID: 7260146
• Journal Information: IEEE Transactions on Power Systems (Institute of Electrical and Electronics Engineers); (United States), Journal Name: IEEE Transactions on Power Systems (Institute of Electrical and Electronics Engineers); (United States) Vol. 9:2; ISSN 0885-8950; ISSN ITPSEG
• Country of Publication: United States
• Language: English

Related Subjects

24 POWER TRANSMISSION AND DISTRIBUTION
240100* -- Power Systems-- (1990-)
ELECTRICAL TRANSIENTS
ENERGY SYSTEMS
OUTAGES
POWER SYSTEMS
STABILITY
SURGES
SYSTEMS ANALYSIS
TRANSIENTS
VOLTAGE DROP