A new MV bus transfer scheme for nuclear power plants
Department of NPP Engineering, KEPCO International Nuclear Graduate School (KINGS), Ulsan, Korea
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Received in final form: 2 September 2015
Accepted: 12 October 2015
Published online: 9 December 2015
Fast bus transfer method is the most popular and residual voltage transfer method that is used as a backup in medium voltage buses in general. The use of the advanced technology like open circuit voltage prediction and digital signal processing algorithms can improve the reliability of fast transfer scheme. However, according to the survey results of the recent operation records in nuclear power plants, there were many instances where the fast transfer scheme has failed. To assure bus transfer in any conditions and circumstances, uninterruptible bus transfer scheme utilizing the state of the art medium voltage UPS is discussed and elaborated.
© C.-K. Chang, published by EDP Sciences, 2015
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