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頁籤選單縮合
題名 | 以深鑿接地井法改善屋內式變電所之接地電阻值=Improvement of Ground Resistances Using the Deep-Ground-Well Method at an Indoor-Type Substation |
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作 者 | 李建興; 張正男; 王耀諄; 何兆榮; 賴良時; | 書刊名 | 台電工程月刊 |
卷期 | 695 民95.07 |
頁次 | 頁30-42 |
分類號 | 448.132 |
關鍵詞 | 屋內式變電所; 深鑿接地井; 接地電阻; 接觸電壓; 接地電位升; 土壤電阻率; 單層土壤模型; N層土壤模型; Indoor-type substation; Deep ground well; Ground resistance; Touch voltage; Ground potential rise; Soil resistivity; One-layer soil model; N-layer soil model; |
語文 | 中文(Chinese) |
中文摘要 | 變電所接地系統對於維持電力系統可靠運轉及確保人員的安全是非常重要的,一般土壤地層厚度與層間土壤電阻率將決定變電所接地系統之接地電阻值。當設計變電所接地系統時,其地網接地電阻實測值大於目標值,則須進行接地系統接地改善。在以深鑿接地井法改善之下,其接地電阻應做準確的分析,才不致使設計結果與量測間產生極大誤差。本文旨在介紹變電所接地系統接地改善與否之判定以及提出單層土壤模型與多層土壤模型等值為單層之接地電阻計算,以分析地處於土壤電阻率極高之屋內式變電所如工甲一次配電變電所與國安一次配電變電所(161/23.9-11.95kV),其深鑿接地井法進行接地改善之接地電阻,並以該變電所各口深鑿接地井接地電阻實測值為基準,來評估變電所採用深鑿接地井法改善接地電阻其設計之準確性。 |
英文摘要 | The grounding system of a substation is very important to maintain the reliable operation of power systems and ensure human safety. The ground resistance of grounding systems at a substation is generally determined by the soil thickness and the resistivity of the layer soil. If the ground grid resistance at an indoor-type substation is greater than its goal value, a plan to improve its grounding system should be initiated. To prevent large errors generated within the design and measurement results, the ground resistanace should be accurately analyzed for deep ground well method improvement. This paper judges whether grounding system improvement or not and propose the ground resistance calculate by using one-layer model and multi-layer model equivalent with one-layer model, and then analyzes with the improvement ground resistance of deep ground well method at high soil resistivity area's Kungchia and Kuoan indoor-type 161/23.9-11.95kV substations as well as assess the accuracy by using deep ground well method to improve ground resistance based on surveying value. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。