Development and installation of 275kV SF/sub 6/ gas-insulated transmission line

Journal Article · Sun Apr 01 00:00:00 EST 1984 · IEEE Trans. Power Appar. Syst.; (United States)

DOI:https://doi.org/10.1109/TPAS.1984.318314· OSTI ID:6316947

Memita, N; Furukawa, H; Itaka, K; Kikuchi, K; Nihomiya, K; Suzuki, T

In order to install a commercial 275kV gas-insulated transmission line (called GIL by the authors) on a route with many bends and inclines, a temperature rise test and long-term field test were performed to confirm the current capacity and thermomechanical and dielectric characteristics. Fault location and leakage gas removal tests were carried out to evaluate maintenance methods. Based on satisfactory results in all these tests, two circuits of 275kV GILs were installed to connect a gas-insulated substation of the Kansai Electric Power Co., Inc. to an overhead line. After completion, a switching surge test was carried out, and surge voltage on conductor and potential rise on enclosure, produced by switching a circuit breaker on and off, were measured to evaluate the suitability of various grounding methods for GILs. It was found that switching the circuit breaker on caused a 9MHz high-frequency surge on the enclosure and that, therefore, multiple grounding of GILs, especially near both ends, is desirable.

• Research Organization: The Kansai Electric Power Co., Inc., Osaka
• OSTI ID: 6316947
• Journal Information: IEEE Trans. Power Appar. Syst.; (United States), Vol. PAS-103:4
• Country of Publication: United States
• Language: English

Related Subjects

24 POWER TRANSMISSION AND DISTRIBUTION
GAS-INSULATED CABLES
FIELD TESTS
INSTALLATION
POWER TRANSMISSION LINES
DIELECTRIC PROPERTIES
ELECTRIC GROUNDS
POWER SUBSTATIONS
SURGES
TEMPERATURE EFFECTS
CABLES
CONDUCTOR DEVICES
ELECTRIC CABLES
ELECTRICAL EQUIPMENT
ELECTRICAL PROPERTIES
EQUIPMENT
PHYSICAL PROPERTIES
TESTING
200300* - Electric Power Engineering- Power Transmission & Distribution- (-1989)