| 摘要 |
<p>PURPOSE: To accurately locate an accident point when an accident occurs at the time of shifting from grounding to short-circuiting in a transmission line by performing a grounding detection mode with a high detection sensitivity when a grounding accident occurs and performing a short-circuiting detection mode with a low detection sensitivity when a short-circuiting accident occurs. CONSTITUTION: A gas insulated switcher GIS houses a conductor for constituting a bus BUS and the constituting equipment of a switching circuit including a breaker CB by distributing them into a plurality of containers 1-5 and connects a plurality of containers 1-5 so that a plurality of gas sections can be constituted. Then, when a grounding accident is detected, the presence or absence of a specific pressure increase of each gas section is detected, a grounding detection mode for plotting the gas section where a specific pressure increase is generated as a grounding accident is performed. On the other hand, when a short-circuiting accident is detected, the presence or absence of a specific pressure increase of each gas section is detected with a lower detection sensitivity than the detection mode of the grounding detection mode and a grounding detection mode for plotting the gas section where a specific pressure increase is generated as a short-circuiting accident is performed, thus plotting an accident point.</p> |
