鋁合金電纜與銅電纜過(guò)載暫態(tài)溫升過(guò)程對(duì)比分析
劉杰1，梁經(jīng)龍1，郝靜亮1，黃位華1，張延輝2，藍(lán)磊2，王羽2
（1 中國(guó)能源建設(shè)集團(tuán)山西省電力勘測(cè)設(shè)計(jì)院有限公司，山西 太原 030073；2 武漢大學(xué) 電氣與自動(dòng)化學(xué)院，湖北 武漢 430072）
摘 要：以常見(jiàn)的水平排布的直埋單芯電纜為例，采用通過(guò)暫態(tài)熱路法和有限元法，在等載流量情況下，計(jì)算兩種電纜在突然過(guò)載后由90 ℃的穩(wěn)態(tài)運(yùn)行情況暫態(tài)向105 ℃的穩(wěn)態(tài)過(guò)渡過(guò)程中的熱時(shí)間常數(shù)，結(jié)果表明：相同的載流量時(shí)鋁合金電纜的熱時(shí)間常數(shù)大于銅電纜，即通過(guò)相同的時(shí)間，鋁合金電纜的溫升低于銅纜，暫態(tài)熱路法和有限元法計(jì)算結(jié)果接近，過(guò)載情況下鋁合金電纜具有較為優(yōu)良的性能。
關(guān)鍵詞：鋁合金電纜；銅電纜；暫態(tài)過(guò)程；熱時(shí)間常數(shù)
中圖分類(lèi)號(hào)：TM247 文獻(xiàn)標(biāo)識(shí)碼：A 文章編號(hào)：1007-3175(2020)02-0027-04
Comparative Analysis of Transient Temperature Rise Process of Aluminum Alloy Cable and Copper Cable
LIU Jie1, LIANG Jing-long1, HAO Jing-liang1, HUANG Wei-hua1, ZHANG Yan-hui2, LAN Lei2, WANG Yu2
（1 Shanxi Electric Power Survey and Design Institute Co., Ltd, China Energy Engineering Group Co., Ltd, Taiyuan 030073, China;
2 School of Electrical Engineering and Automation, Wuhan University, Wuhan 430072, China）
Abstract: Taking a common horizontally-displaced single-core cable for example, this paper adopted the steady-state thermal path method and the finite element method to calculate the thermal time constant of two kinds of cables in the transition process from the steady-state operation at 90 °C to the steady-state operation at 105 °C after the sudden overload under the same current carrying capacity conditions. The result shows that the thermal time constant of the aluminum alloy cable is greater than that of the copper cable under the same current carrying capacity, that is, the temperature rise of the aluminum alloy cable is lower than that of the copper cable through the same time. The calculation results of transient thermal path method are close to the finite element method and the aluminum alloy cable has better performance under overload conditions.
Key words: aluminum alloy cable; copper cable; transient process; thermal time constant
參考文獻(xiàn)
[1] 謝莉杰. 鋁合金電纜發(fā)展趨勢(shì)及應(yīng)用的研究[J]. 質(zhì)量技術(shù)監(jiān)督研究，2018(1)：25-29.
[2] 鄭雁翎，王寧，李洪杰，等. 電力電纜載流量計(jì)算的方法與發(fā)展[J]. 電氣應(yīng)用，2010，29(3)：26-31.
[3] International Electrotechnical Commission. Calculation of the current rating of electric cables, part1:current rating equations(100% load factor) and calculation of losses, section1: general: IEC 60287-1-1-2006[S]. Geneva: International Electrotechnical Commission Publication，2006：11-24.
[4] International Electrotechnical Commission. Calculation of the current rating of electric cables, part2: thermal resistance, section1: general: IEC 60287-2-1-2006[S]. Geneva: International Electrotechnical Commission Publication，2006：19-39.
[5] International Electrotechnical Commission.Calculation of the cyclic and emergency current rating of cables, part2:cyclic rating of cables greater than 18/30(36) kV and emergency ratings for cables of all voltages:IEC 60853-2-2008[S].Geneva:International Electrotechnical Commission Publication，2008：24-31.
[6] 劉毅剛，羅俊華. 電纜導(dǎo)體溫度實(shí)時(shí)計(jì)算的數(shù)學(xué)方法[J]. 高電壓技術(shù)，2005，31(5)：52-54.
[7] 雷成華. 高壓?jiǎn)涡倦娎|動(dòng)態(tài)增容的理論分析與實(shí)驗(yàn)研究[D]. 廣州：華南理工大學(xué)，2012．
[8] 傅晨釗，司文榮，祝令瑜，等. 土壤直埋單芯電纜暫態(tài)溫升計(jì)算模型的研究[J]. 高壓電器，2018，54(1)：158-163.
[9] 王鵬.10 kV三芯電纜及附件線(xiàn)芯溫度計(jì)算與實(shí)驗(yàn)研究[D]. 廣州：華南理工大學(xué)，2016.
[10] 殷瀟波.110 kV以上高壓電纜敷設(shè)周期性載流量研究[D]. 上海：上海交通大學(xué)，2010.
[11] 王有元，陳仁剛，陳偉根，等. 有限元法計(jì)算地下電纜穩(wěn)態(tài)溫度場(chǎng)及其影響因素[J]. 高電壓技術(shù)，2009，35(12)：3086-3092.
[12] 張堯，周鑫，牛海清，等. 單芯電纜熱時(shí)間常數(shù)的理論計(jì)算與試驗(yàn)研究[J]. 高電壓技術(shù)，2009，35(11)：2801-2806.
