Impact of WAMS Malfunction on Power System Reliability Assessment

Monitoring/control infrastructures are often assumed to be fully reliable in power system reliability studies. However, recent investigations on blackouts have revealed the crucial impacts of monitoring/control system malfunctions. This paper addresses the impact of situational awareness and control...

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Bibliographic Details
Published in:IEEE transactions on smart grid 2012-09, Vol.3 (3), p.1302-1309
Main Authors: Aminifar, F., Fotuhi-Firuzabad, M., Shahidehpour, M., Safdarian, A.
Format: Article
Language:English
Subjects:
Composite system reliability assessment
Control systems
Indexes
Monitoring
observability analysis
phasor measurement unit (PMU)
Phasor measurement units
Power system reliability
Reliability
wide-area measurement system (WAMS)
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Summary:Monitoring/control infrastructures are often assumed to be fully reliable in power system reliability studies. However, recent investigations on blackouts have revealed the crucial impacts of monitoring/control system malfunctions. This paper addresses the impact of situational awareness and controllability on power system reliability assessment. A methodology is proposed to simulate a situation in which a limitation of either or both monitoring and control functions could spread the consequence of power system events throughout the grid. It is assumed that the monitoring/control infrastructure is based on a wide-area measurement system (WAMS). While the proposed methodology is applicable to a variety of strategies for grid operations, certain assumptions are made for the simulation purposes. The Monte Carlo simulation is applied and a scenario reduction technique is considered for overcoming computational burdens. The performance of the proposed approach is simulated and analyzed on 9-bus and the IEEE 57-bus systems.
ISSN:1949-3053
1949-3061
DOI:10.1109/TSG.2012.2183397