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Transient Security Assessment in Real-time at Southern Company

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5 Author(s)
Viikinsalo, J. ; Southern Co. Services Inc., Brimingham, AL ; Martin, A. ; Morison, K. ; Wang, L.
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Southern Company Services (USA) has successfully implemented a continual transient security assessment (TSA) process utilizing Powertech's TSAT software at their system control center. Southern's EMS provides an updated powerflow case from the real-time state estimator to the TSAT application through Powertech's DSA Manager on an hourly (24times7) basis. One unique aspect of the enhanced state estimator model is a highly reduced external system model, which provides a virtually identical dynamic response as the much larger original from which it was derived. Southern has already benefited from this on-line TSA system during the post-Katrina system restoration. Further work is ongoing to enhance the selection of contingencies evaluated, and to integrate summary results of the stability studies into Southern's EMS alarms processing subsystem

Published in:

Power Systems Conference and Exposition, 2006. PSCE '06. 2006 IEEE PES

Date of Conference:

Oct. 29 2006-Nov. 1 2006

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