1200-kV system study

Technical Report · Sun Jan 31 23:00:00 EST 1982

OSTI ID:5459811

The 1200kV Systems Study Project consisted of two major tasks: definition of performance requirements for a 1200kV circuit breaker for use in a gas-insulated substation; and performance analysis of a 1200 kV insolator/disconnect switch for gas-insulated substation. For the first task, the performance requirements included: insulation requirements - 60 Hz, switching surge and lightning, both phase to ground and across the open breaker; prospective transient recovery voltage requirements related to fault current interrupting; an opening scheme capable of limiting phase to ground and across the breaker overvoltages resulting from line dropping and out of phase switching; a closing scheme capable of limiting line overvoltages during reclosing to 1.5 pu (2 percent level). The investigation of each of these items and of lightning characteristics and effects is discussed. The 1200 kV disconnect switch study analyzed bus energizing, bus de-energizing, transformer de-energizing, and the effect of hysteresis losses. Results from these analyses are presented. (LCL)

• Research Organization: Brown Boveri Electric, Inc., Chalfont, PA (USA)
• DOE Contract Number: AC01-78ET29064
• OSTI ID: 5459811
• Report Number(s): DOE/ET/29064-1; ON: DE82014512
• Country of Publication: United States
• Language: English

Related Subjects

200301* -- Power Transmission & Distribution-- AC Systems
EHV & UHV-- (-1989)
24 POWER TRANSMISSION AND DISTRIBUTION
AC SYSTEMS
CIRCUIT BREAKERS
CONTROL
ELECTRIC DISCHARGES
ELECTRICAL EQUIPMENT
ELECTRICAL INSULATION
ENERGY SYSTEMS
EQUIPMENT
EQUIPMENT PROTECTION DEVICES
FAILURES
GAS-INSULATED SUBSTATIONS
LIGHTNING
OVERVOLTAGE
PERFORMANCE
POWER SUBSTATIONS
POWER SYSTEMS
SPECIFICATIONS
SURGES
SWITCHES
UHV AC SYSTEMS