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Transformer inrush mitigation using controlled switching of a 500-kV circuit breaker

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2 Author(s)
R. Paul Barnett ; Power System Operations, Substation Projects, Tennessee Valley Authority, Chattanooga, USA ; Jeffrey H. Nelson

This paper presents post event analyses of three inrush events that caused relay misoperation. It then presents the results of an EMTP study that illustrates the degree to which different techniques can mitigate the transformer inrush transient and compares this to the predicted performance of closing resistors in an identical application. It demonstrates that controlled switching of a transformer adequately mitigates inrush transients.

Published in:

High Voltage Engineering and Application (ICHVE), 2010 International Conference on

Date of Conference:

11-14 Oct. 2010