Proposed Methods to Reduce Transient Sheath Voltage Rise in Gas Insulated Substations

Gas insulated substation systems (GIS) are vulnerable to surges which inevitably cause transient sheath voltage rise (TSVR). This paper discusses a mathematical model to simulate short gas-insulated transmission line subjected to internal breakdown during disconnect switch operations and subsequent,...

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Bibliographic Details
Published in:IEEE transactions on power apparatus and systems 1985-05, Vol.PAS-104 (5), p.1198-1206
Main Authors: Harrington, Robert J., El-faham, Mohamed M.
Format: Article
Language:English
Subjects:
Electric breakdown
Gas insulated transmission lines
Gas insulation
Geographic Information Systems
Mathematical model
Power system transients
Substations
Surges
Switches
Voltage
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Summary:Gas insulated substation systems (GIS) are vulnerable to surges which inevitably cause transient sheath voltage rise (TSVR). This paper discusses a mathematical model to simulate short gas-insulated transmission line subjected to internal breakdown during disconnect switch operations and subsequent, restriking of the gap. A formula for the transmitted coefficient of a containment wave guide (CWG) has been developed. A study to investigate the effects of system materials and CWG on TSVR is here presented. It is shown that a combination of CWG and high permeability and resistivLty system material has a, considerable effect in decreasing and damping TSVR. This has important safety and measurement implications.
ISSN:0018-9510
2995-6323
DOI:10.1109/TPAS.1985.323472