海底接地網(wǎng)在濱海電廠的應(yīng)用
李向東，徐挺進(jìn)
（華能羅源發(fā)電有限責(zé)任公司，福建 福州 350600）
摘 要：對(duì)濱海電廠接地網(wǎng)設(shè)計(jì)和降阻改造施工過(guò)程進(jìn)行了闡述，結(jié)合濱海電廠的土壤、環(huán)境等情況，通過(guò)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(lái)的一些特性，在設(shè)計(jì)中采用了較為保守的計(jì)算公式，確保降阻改造工程達(dá)到預(yù)期的設(shè)計(jì)要求，施工改造后進(jìn)行實(shí)際接地阻抗測(cè)試，測(cè)試數(shù)據(jù)滿(mǎn)足相關(guān)規(guī)范的要求，并與降阻的設(shè)計(jì)值相符。
關(guān)鍵詞：濱海電廠；接地網(wǎng)；降阻
中圖分類(lèi)號(hào)：TM862 文獻(xiàn)標(biāo)識(shí)碼：B 文章編號(hào)：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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