Charging current compensation for distance protection

Charging current compensation for distance protection

When a distance relay is applied to a long transmission line, the capacitance of the transmission line causes oscillation of the distance measurement, although the exact nature of the phenomenon has never been clearly defined. Our research has shown that the degree of oscillation can be reduced sign...

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Bibliographic Details
Published in:IEEE Power Engineering Society General Meeting, 2005 pp. 2683 - 2688 Vol. 3
Main Authors: Kase, T., Kurosawa, Y., Amo, H.
Format: Conference Proceeding
Language:English
Published: IEEE 2005
Subjects:
Distance measurement
Distributed parameter circuits
Equations
Mathematical model
Power transmission lines
Protection
Protective relaying
Sampling methods
Transmission line theory
Voltage
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Summary:When a distance relay is applied to a long transmission line, the capacitance of the transmission line causes oscillation of the distance measurement, although the exact nature of the phenomenon has never been clearly defined. Our research has shown that the degree of oscillation can be reduced significantly by introducing charging current to the circuit model to be solved by the distance relay. In this paper, the undesirable influence of charging current on distance protection is introduced, after which the effect of charging current compensation for a distance relay is proven by practical simulations. Furthermore, the advantage of this method of charging current compensation as opposed to other methods is also explained.
ISBN:9780780391574
0780391578
ISSN:1932-5517
DOI:10.1109/PES.2005.1489357