Frequency-independent circuit model of earth return effects in transmission systems
Frequency-independent circuit model of earth return effects in transmission systems
The paper presents an alternative method of calculating the impedance correction terms of an overhead transmission line by taking into account the effect of the earth return. A circuit-based model is proposed that is frequency-independent and can provide the linear parameters of the earth return path. To demonstrate the validity of the model, the theoretical current distributions under steady-state and transient conditions are calculated. The results obtained are compared with values derived using Carson's formula and finite element analysis. The results are in good agreement. The model is simple to implement, has short computational times, and compared with other approaches it provides a straightforward calculation that has direct physical meaning. The model can be easily adapted into any transient analysis program and used to predict the surge characteristics of the system.
143-8
Davies, A E
56d95222-b259-494a-92e9-68b090ec0dcd
Tong, Y K
311e849d-671b-49c2-9d96-cdb6904c1a75
Lewin, P L
78b4fc49-1cb3-4db9-ba90-3ae70c0f639e
German, D M
b689e641-47ab-4822-a6fc-29a3a0c7ea5f
March 1995
Davies, A E
56d95222-b259-494a-92e9-68b090ec0dcd
Tong, Y K
311e849d-671b-49c2-9d96-cdb6904c1a75
Lewin, P L
78b4fc49-1cb3-4db9-ba90-3ae70c0f639e
German, D M
b689e641-47ab-4822-a6fc-29a3a0c7ea5f
Davies, A E, Tong, Y K, Lewin, P L and German, D M
(1995)
Frequency-independent circuit model of earth return effects in transmission systems.
IEE Proceedings - Generation, Transmission and Distribution, 142 (2), .
Abstract
The paper presents an alternative method of calculating the impedance correction terms of an overhead transmission line by taking into account the effect of the earth return. A circuit-based model is proposed that is frequency-independent and can provide the linear parameters of the earth return path. To demonstrate the validity of the model, the theoretical current distributions under steady-state and transient conditions are calculated. The results obtained are compared with values derived using Carson's formula and finite element analysis. The results are in good agreement. The model is simple to implement, has short computational times, and compared with other approaches it provides a straightforward calculation that has direct physical meaning. The model can be easily adapted into any transient analysis program and used to predict the surge characteristics of the system.
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Published date: March 1995
Organisations:
Electronics & Computer Science, EEE
Identifiers
Local EPrints ID: 254005
URI: http://eprints.soton.ac.uk/id/eprint/254005
ISSN: 1350-2360
PURE UUID: aa977967-5434-454f-926d-b19460ddf448
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Date deposited: 26 Jun 2003
Last modified: 11 Dec 2021 02:52
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Contributors
Author:
A E Davies
Author:
Y K Tong
Author:
P L Lewin
Author:
D M German
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