Title :
Analysis of surges measured at 550 kV substations
Author :
Okabe, S. ; Kan, M. ; Kouno, T.
Author_Institution :
Tokyo Electric Power Co. Inc., Tokyo, Japan
fDate :
10/1/1991 12:00:00 AM
Abstract :
An automatic measuring system was developed for measuring overvoltages, and it was applied to 550 kV power stations and substations in service. This system has been in operation since June 1987, and 176 records have been successfully obtained. Induced-lightning surges, back-flashover surges due to lightning, circuit-breaker-closing surges, and gas-insulated-substation (GIS)-disconnector-switching surges were recorded. Using simple EMTP analysis, the authors were able to reproduce the fundamental characteristics of the measured waveforms. The authors report on such measured data and on the results of data analysis
Keywords :
circuit breakers; flashover; lightning; overvoltage; substations; surges; switching; voltage measurement; 550 kV; EMTP analysis; GIS; automatic measuring system; back-flashover surges; circuit-breaker-closing surges; disconnector-switching surges; gas-insulated-substation; overvoltage measurement; power stations; substations; surge measurement; Bandwidth; Circuits; EMTP; Frequency measurement; Insulation; Lightning; Power measurement; Substations; Surges; Voltage control;
Journal_Title :
Power Delivery, IEEE Transactions on
