Abstract
This paper demonstrates the results obtained from detailed studies of Kalman phasor estimation used in numerical
differential protective relaying of a power transformer. The accuracy and expeditiousness of a current estimate in the
numerical differential protection is critical for correct and not unnecessary activation of the breakers by the protecting relay, and the objective of the study was to utilize the capability of Kalman phasor estimation in a signal model representing the expected current signal from the current transformers of the power transformer. The used signal model included the fundamental frequency, an exponentially decaying current, the 2nd and the 5th harmonic to the fundamental frequency.
differential protective relaying of a power transformer. The accuracy and expeditiousness of a current estimate in the
numerical differential protection is critical for correct and not unnecessary activation of the breakers by the protecting relay, and the objective of the study was to utilize the capability of Kalman phasor estimation in a signal model representing the expected current signal from the current transformers of the power transformer. The used signal model included the fundamental frequency, an exponentially decaying current, the 2nd and the 5th harmonic to the fundamental frequency.
| Original language | English |
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| Title of host publication | Proceedings of International Conference on Power System Transients |
| Number of pages | 6 |
| Publisher | IPST |
| Publication date | 2007 |
| Publication status | Published - 2007 |
| Event | International Conference on Power System Transients (IPST) 2007 - Lyon, France Duration: 4 Jun 2007 → 7 Jun 2007 |
Conference
| Conference | International Conference on Power System Transients (IPST) 2007 |
|---|---|
| Country/Territory | France |
| City | Lyon |
| Period | 04/06/2007 → 07/06/2007 |