Summary
In this paper, we report on the potential impact of the eruption of Mt. Fuji on transmission lines in the Tokyo metropolitan area and the countermeasures. Particularly for overhead transmission lines, it is anticipated that the insulation performance of insulators will deteriorate due to deposition of widespread volcanic ash that falls during an eruption. Since the flashover voltage
Read more Read less(FOV) test under volcanic ash conditions showed that the insulation performance of ashcovered insulators reached saturation at certain levels, we determined the required number of insulator units based on the lower bound of degraded performance. However, as countermeasures, given that a wide area is expected to be affected by volcanic ash, it is not feasible to implement preventive measures for all transmission lines. Therefore, we selected specific transmission lines for preventive measures, considering the importance of the supply areas. Since post-event responses are necessary in transmission lines where preventive measures are not applied, we developed tools to clean insulators covered with volcanic ash. In the event of a Mt. Fuji eruption, the combination of preventive measures and post-event responses will minimize the impact of volcanic ash and ensure the reliability of our network even under such a severe natural disaster.
Additional informations
| Publication type | Session Materials |
|---|---|
| Reference | B2_10833_2026 |
| Publication year | |
| Publisher | CIGRE |
| Country | Japan |
| Study committees | |
| File size | 1 MB |
| Price for non member | 30 € |
| Price for member | 30 € |
Authors
AOKI Yoshiaki - TEPCO Power Grid, Inc. Japan; TAKADA Noriyuki - TEPCO Power Grid, Inc. Japan; OSONO Tomoaki - TEPCO Power Grid, Inc. Japan; SHIRAISHI Tomonori - TEPCO Power Grid, Inc. Japan; HOMMA Hiroya - Central Research Institute of Electric Power Industry Japan; MIYOSHI Masahito - Central Research Institute of Electric Power Industry Japan; KITA Naoki - Central Research Institute of Electric Power Industry Japan
Keywords
Preventive measure, Transmission line insulator, Volcanic ash
