海底接地網(wǎng)在濱海電廠的應(yīng)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(wǎng)設(shè)計和降阻改造施工過程進行了闡述，結(jié)合濱海電廠的土壤、環(huán)境等情況，通過新增海底接地網(wǎng)與原電廠接地網(wǎng)連接，并基于外接電網(wǎng)降阻總結(jié)出來的一些特性，在設(shè)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(yù)期的設(shè)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(guān)規(guī)范的要求，并與降阻的設(shè)計值相符。
關(guān)鍵詞：濱海電廠；接地網(wǎng)；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
參考文獻
[1] 黃曉蕓. 濱海電廠的接地系統(tǒng)設(shè)計[J]. 紅水河，2013，32(1)：17-21.
[2] 魯志偉，常樹生，東方，等. 引外接地對降低接地網(wǎng)接地阻抗的作用分析[J]. 高電壓技術(shù)，2006，32(6)：119-121.
[3] 周偉，裘曉煒. 減小接地網(wǎng)工頻接地電阻的幾種常用方法[J]. 科技創(chuàng)新導(dǎo)報，2017(30)：32.
[4] 中國電力企業(yè)聯(lián)合會. 接地裝置特性參數(shù)測量導(dǎo)則：DL/T 475—2006[S]. 北京：中國標準出版社，2006：4.
