CHARACTARISTICS OF SUBSTATION FACILITIES' DAMAGE CAUSED BY RECENT EARTHQUAKES AND THEIR SEISMIC COUNTERMEASURES

Abstract

This paper presents characteristics of substation facilities' damage caused by recent earthquakes and their seismic countermeasures in order to realize future subjects. Damage to substation components and functional loss of electric power systems caused by 1993 Kushiro-Oki, 1994 Northridge, 1994 Hokkaido Toho-Oki, and 1995 Hyogoken Nanbu earthquakes are carefully examined. Existing seismic countermeasures related to substation components and power system operations are also examined. After that, future subjects of seismic countermeasures are discussed on the basis of these examinations.