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Hydro-Québec's challenges and experiences in on-line DSA applications

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7 Author(s)
Loud, L. ; Hydro-Quebec Res. Inst., Varennes, QC, Canada ; Guillon, S. ; Vanier, G. ; Huang, J.A.
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Hydro-Québec has a long interest in on-line dynamic security assessment (DSA) necessitated by its challenging power network dynamics (transient, fast and slow voltage collapse). We are presently using off-line calculated security indicators and an on-line monitoring system approach. Every 5 seconds our system provides dynamic security limits, the impact of each out-of-service component, simple guidelines to aid in preventive/corrective control and security-margins which modulate certain special protection systems. These limits are extensively used off-line in the operating and planning environments to ensure security-result coherency for maintenance planning, day-ahead scheduling and ATC calculations. These security indicators are based on topological data and operating conditions. In this context of this high-performance mission-critical system, this paper discusses the practical challenges and experiences of our implemented DSA system as well other specific components including: state estimation, soft knowledge, contingency analysis, performance, equipment limit sensitivity, reliability, responsibility and on-line/off-line coherency.

Published in:

Power and Energy Society General Meeting, 2010 IEEE

Date of Conference:

25-29 July 2010

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