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題 名 | 直埋管路式三相地下電纜系統含管路隔離板之溫昇分析=Analysis of Temperature Rise of Three-Phase Underground Cables in a Direct Burial Conduit System with a Concrete Spacer |
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作 者 | 江奕旋; 蘇慶宗; | 書刊名 | 技術學刊 |
卷 期 | 15:3 2000.09[民89.09] |
頁 次 | 頁405-411 |
分類號 | 448.36 |
關鍵詞 | 直埋管路; 地下電纜; 有限元素法; Direct burial conduit; Underground cable; Finite element method; |
語 文 | 中文(Chinese) |
中文摘要 | 地下輸配電系統會因所載電流所產生的熱量而形成溫度上昇的情形,其結果會影響電之載流量大小,本文採用有限元素法來分析管理直埋式三相地下電纜系統中含管路隔離板段之溫昇問題。分析管路直埋式三相電纜時,因三電纜表面溫度並不相同,乃以各電纜之功率損失為輸入,再求出該電纜系統之各節點溫度,分析電纜周圍環境(回填土材料、管路埋深)對其溫昇之影響。本文之分析結果,有助於改善及提昇直埋管路式電纜之輸電效率,可提供地下電纜系統之規劃、設計者參考。 |
英文摘要 | The heat generated by the current in cables will cause the temperature of the underground system to rise, which will then influence the ampacities of cables. In this paper, the finite element method is used to solve the thermal field problem of three-phase underground cables in a direct burial conduit system. The losses of the cables are heat sources for temperature rise in those cables, which are employed as input data for the temperature distribution calculation. In this study, the backfill thermal conductivities and the depth of the trench are varied to simulate actual field situation. The computational results obtained are useful for improving transmission efficiency of the direct burial conduit system. |
本系統中英文摘要資訊取自各篇刊載內容。