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Latency Viewed as a Stochastic Process and its Impact on Wide Area Power System Control Signals

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4 Author(s)
Stahlhut, J.W. ; Arizona State Univ., Tempe ; Browne, T.J. ; Heydt, G.T. ; Vittal, V.

A method of calculating the communication delay (latency) for measurements and control signals in a power system is shown. The basis of the calculation is a dedicated communication channel for control signals. The time delay calculation is examined using a dynamic equivalent of the Western Electricity Coordinating Council transmission system. The impact on control system response is discussed. The application given is a wide area control system for interarea mode damping. Results demonstrate that control signal latency can degrade the performance of controls in a wide area control system.

Published in:

Power Systems, IEEE Transactions on  (Volume:23 ,  Issue: 1 )

Date of Publication:

Feb. 2008

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