雷害対策と雷活動の変化を考慮した相対的な送電線雷事故率の評価
スポンサーリンク
概要
- 論文の詳細を見る
In Hokuriku area, there are many lightning strokes through the year. Lightning strokes frequently cause power failures and instantaneous voltage drops on power systems, therefore various countermeasures against lightning faults on transmission lines have been taken. Recently, line surge arresters are installed as an effective countermeasure against multiple-phase faults that cause route interruption of transmission lines. The arresters are also one of the effective methods to reduce the frequency of instantaneous voltage drops. Hence it is thought that the rate of arrester installation will rise remarkably in the future. In order to take more effective countermeasures, it is indispensable to estimate lightning fault rate of transmission lines accurately in advance. In this paper, a method to estimate relative lightning fault rate of transmission lines depending on line design and lightning activity is proposed. Then lightning fault rate of 66/77kV and 275kV transmission lines with arresters is estimated by the proposed method and their accuracy is evaluated. Furthermore, the effectiveness of arresters for the improvement of reliability of transmission lines is demonstrated.
論文 | ランダム
- 福島県,入水鍾乳洞におけるスカラップの形成
- 一般廃棄物に対する行政監察結果報告 (特集 廃棄物対策)
- ピラ-ツィク,U.著「コルチャックのホ-ム教育学と学校教育学」の翻訳と考察
- 老人医療等公費負担医療に関する行政監察結果に基づく勧告の概要
- PAF (冠循環の調節と破綻--微小循環を中心に) -- (冠微小循環の調節因子)