Performance of a technical and economical feasibility study of an hvdc compressed gas insulated transmission line. Technical status report No. 6 for the period of May 1980

Technical Report · Thu Jun 12 00:00:00 EDT 1980

OSTI ID:5383979

The feasibility of a 1300 kV basic insulation level (BIL) with respect to lightning surges was assessed for an hvdc compressed gas insulated transmission line. The mechanism by which overvoltages within the cable can exceed the protective level of the arresters at the cable terminals is outlined. The parameters of lightning currents are discussed. These parameters and the design of the overhead line are the controlling factors on the shape and the magnitude of lightning surges. The results of computed overvoltages within the cable are presented. The results illustrate the benefits of two protective schemes. One scheme is used to lengthen the front and to slow down the rate of rise of the surge into the cable. The other scheme is used to do likewise to the reflected surge at the station-end of the cable. These preliminary results indicate that a 1300 kV BIL is feasible with additional arresters on the overhead line or with additional capacitors at the station.

• Research Organization: Aluminum Co. of America, Alcoa Center, PA. Alcoa Technical Center
• DOE Contract Number: AC01-79ET29355
• OSTI ID: 5383979
• Report Number(s): DOE/ET/29355-T6
• Country of Publication: United States
• Language: English

Related Subjects

200302* -- Power Transmission & Distribution-- DC Systems-- (1989-)
24 POWER TRANSMISSION AND DISTRIBUTION
CABLES
CONDUCTOR DEVICES
CURRENT LIMITERS
CURRENTS
DC SYSTEMS
ECONOMICS
ELECTRIC CABLES
ELECTRIC CURRENTS
ELECTRIC DISCHARGES
ELECTRICAL EQUIPMENT
ELECTRICAL INSULATION
ELECTRICAL INSULATORS
EQUIPMENT
FEASIBILITY STUDIES
FLASHOVER
GAS-INSULATED CABLES
HVDC SYSTEMS
LIGHTNING
LIGHTNING ARRESTERS
OVERVOLTAGE
PERFORMANCE TESTING
POWER SYSTEMS
POWER TRANSMISSION LINES
SAFETY
SURGES
TECHNOLOGY ASSESSMENT
TESTING