52. 費用便益分析による電力系統の地震防災対策に関する検討 : 変電設備の耐震補強計画法(VII. 性能設計と許容リスク,第VIIセッション,第7回(平成9年度)地域安全学会研究発表会)

概要

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Earthquake risk reduction studies for electric power systems are getting important in the past one decade. This is because the severe events have occurred in Japan. However, in the present circumstances, it is difficult to determine the following criteria on the basis of the existing studies; acceptable risk, scenario earthquakes etc. To make seismic countermeasures for electric power systems, facility managers have to determine these criteria. This paper presents a framework of an earthquake risk reduction study for electric power systems. A concept of scenario estimation methods on the basis of the cost-benefit analysis was emphasized. As an example, a method for seismic retrofit planning of substation facilities was proposed. The proposed method can determine an optimum number and priority of substation components to be retrofitted.