海底接地網在濱海電廠的應用
李向東,徐挺進
(華能羅源發(fā)電有限責任公司,福建 福州 350600)
摘 要:對濱海電廠接地網設計和降阻改造施工過程進行了闡述,結合濱海電廠的土壤、環(huán)境等情況,通過新增海底接地網與原電廠接地網連接,并基于外接電網降阻總結出來的一些特性,在設計中采用了較為保守的計算公式,確保降阻改造工程達到預期的設計要求,施工改造后進行實際接地阻抗測試,測試數(shù)據(jù)滿足相關規(guī)范的要求,并與降阻的設計值相符。
關鍵詞:濱海電廠;接地網;降阻
中圖分類號:TM862 文獻標識碼:B 文章編號:1007-3175(2020)02-0039-04
Application of Seabed Grounding Grid in Coastal Power Plant
LI Xiang-dong, XU Ting-jin
(Huaneng Luoyuan Power Generation Co., Ltd, Fuzhou 350600, China)
Abstract: This paper expounded the design and earthing resistance reduction transformation work progress of grounding grid in coastal power plants. In consideration of the soil and environment in coastal power plants etc conditions, via the newly increased connection between the seabed grounding grid and the original power plant grounding grid and on the basis of circumscribed power grid earthing resistance reduction, this paper summarized some characteristics and adopted more conservative computational formulas in the design to ensure that the earthing resistance reduction reached the expectation. After construction and transformation, the practical impedance ground tests show that the test data meet the related norm requirements, conform to the design value of the earthing resistance reduction.
Key words: coastal power plant; grounding grid; earthing resistance reduction
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