交聯(lián)電纜運行時的熱特性參數(shù)設(shè)計計算

1、交聯(lián)電纜運行時的熱特性參數(shù)設(shè)計計算一九九六年九月1.概況隨著我國電力事業(yè)的發(fā)展,交聯(lián)電纜的應(yīng)用愈加廣泛了。初步估計：1995年共生產(chǎn)35kV及發(fā)下交聯(lián)電纜達2.2萬km(其中10kV及以下的電纜約占95%)。110kV交聯(lián)電纜共需求約420km(其中進口的110kV電纜約占2/3)。隨著電纜應(yīng)用數(shù)量的增多，各供電部門要求提供電纜運行中的熱性能參數(shù)更為普遍,很多企業(yè)因不知道這些參數(shù)而失去市場競爭的機會,出口產(chǎn)品如不提供這些參數(shù),就根本沒有投標(biāo)資格,可見一個管理健全和較為現(xiàn)代化的電纜企業(yè),一定要具備這些參數(shù)資料,共包括三個方面的資料：電力電纜連續(xù)負荷下的載流量,機械部上海電纜研究所已于1994年出

2、版了載流量技術(shù)資料,很多電纜企業(yè)已經(jīng)在產(chǎn)品樣本上參照刊出。電力電纜和金屬屏蔽的短路電流,短路電流中特別是金屬屏蔽層的短路電流由于各電纜企業(yè)在工藝選用中尚有一定難度，盡管IEC949-1988早就出版了其計算方法，目前尚未見到有關(guān)電纜企業(yè)的選用表格,本文總結(jié)了國內(nèi)外工藝結(jié)構(gòu)中的參數(shù)選用經(jīng)驗,編制了一套參數(shù)，是否適當(dāng)，還需在實踐中不斷修正。電纜運行時，保護系統(tǒng)要求提供的技術(shù)參數(shù)如：電纜的交直流電阻電纜的電容電纜的電感電纜的正、負序阻抗電纜的零序阻抗各電纜企業(yè)已經(jīng)提供了電纜的直流電阻，并作為出廠考核指標(biāo)，有些企業(yè)如山東電纜廠、無錫電纜廠等較大的電纜企業(yè)已在樣本上刊登了電感、電容等一些資料，但還是不夠

3、完整的。電網(wǎng)系統(tǒng)的綜合分析2.1電網(wǎng)系統(tǒng)的分類電網(wǎng)系統(tǒng)的種類較多，若歸納起來，可以分為直接接地，小電阻接地，消弧線圈接地和不接地系統(tǒng)等種類，其中小電阻接地和消弧線圈接地又通稱非有效接地系統(tǒng)，分別介紹如下：直接接地系統(tǒng)，110kV及以上高壓和超高壓電網(wǎng)采用直接接地系統(tǒng)，電網(wǎng)容量大，可靠程度高，一相故障接地，保護系統(tǒng)可在零點幾秒內(nèi)跳闡，系統(tǒng)過電壓大大降低，由于采用雙回路供電，工程造價成倍上升，110kV及以上電網(wǎng)，均采用直接接地系統(tǒng)，我國也不例外。小電阻接地系統(tǒng)，用于35kV及以下電網(wǎng)，電網(wǎng)容量不算太大，采用小電阻限止接地故障電流，保護系統(tǒng)可在數(shù)秒或數(shù)十秒鐘內(nèi)(最大不超過一分鐘)跳闡，系統(tǒng)過電壓不

4、高，由于采用雙回路供電，一回故障接地跳闡時，另一回可繼續(xù)供電，但工程造價成倍上升，發(fā)達國家均采用小電阻接地系統(tǒng)，以保證供電的可靠性。c）消弧線圈接地系統(tǒng)，即采用一電抗線圈限止接地故障電流，為前蘇聯(lián)和東歐國家大量采用，日本在6070年代也曾大量采用過。我國在5060年代的電網(wǎng)建議均參照蘇聯(lián)模式，至今仍全部采用這種系統(tǒng)，該系統(tǒng)的特點是一相故障接地后，由于接地故障電流被消弧線圈限制到很小，系統(tǒng)仍可繼續(xù)供電，因能采用單回路供電，工程造價非常便宜，其缺點是系統(tǒng)過電壓高，一相故障接地時，其它兩相將長期承受線電壓（1.73U。），降低了電纜的老化壽命，表2-1為我國某些大城市采用消弧線圈接地系統(tǒng)的一些基本情

5、況。表2-1中的接地故障時間最大不超過2小時，已列入電力部“電氣事故處理規(guī)程”表中I為接地故障電流,C在消弧線圈接地系統(tǒng)中I10A，可達數(shù)十安或數(shù)百安培。C表2-1地區(qū)項目指標(biāo)一-上海華東沈陽北京消弧線圈接地系統(tǒng)過電壓故障接地時間采用不接地系統(tǒng)規(guī)定采用消弧線圈系統(tǒng)規(guī)定3-5U02小時IV10ACI10AG4U02小時IV10ACI10AG4U02小時4U02小時d）不接地系統(tǒng),我國在35kV及以下系統(tǒng)中，如電容電流IV10A,10kV系統(tǒng)IV20A,CC6kV系統(tǒng)IV30A時，采用不接地系統(tǒng)，否則就難以切斷電容電流，就必須采用消弧線圈接C地系統(tǒng)，以補償線路的電容電流。從電網(wǎng)系統(tǒng)的分類可見，我國

6、作為一個發(fā)展中國家，只能采用工程造價較便宜的消弧線圈接地系統(tǒng)，由于系統(tǒng)過電壓要求電纜絕緣較厚，電網(wǎng)才能安全運行，故應(yīng)采用6/6kV,8.7/10kV及26/35kV電壓等級，盡可、管電纜價格貴些，但在電網(wǎng)系統(tǒng)中占的份額極小，如果供貨弄錯了，將對電網(wǎng)的安全運行帶來很大危害，在我國少數(shù)地區(qū)如寶鋼大型企業(yè)，一些工業(yè)開發(fā)區(qū)，也采用雙回路系統(tǒng)，還有一些出口產(chǎn)品，一般均采用雙回路系統(tǒng)，應(yīng)提供另一類型號規(guī)格即3.6/6kV,6/10kV,12/20kV,18/30kV和21/35kV等電壓等級，絕緣厚度較前一種規(guī)格薄一些，千萬不要在供貨時弄錯。2.2電網(wǎng)系統(tǒng)的短路在三相電力系統(tǒng)中，會產(chǎn)生三相短路，兩相短路，

7、兩相對地短路和單相短路等各種情況，其中以單相短路概率最多，約占65%，三相短路概率最少，約5%，兩相和兩相對地短路分別占10%和20%。在三相不對稱電力系統(tǒng)中，任何一節(jié)點的電壓矢量UA,UB,UC,可以分ABC為分解為正序分量，負序分量和零序分量，即：U=U+U+UAA1A2A0U=U+U+UBB1B2B0UC=UC1+UC2+UC0LaiUbiLci正序電壓UA2lB2LC2負序電壓LaoLboUco零序電壓LboLco圖2-1三相不對稱短路系統(tǒng)圖解因A1，B1，C1絕對值相等，次序為順時針稱正序分量U=Ue-j120A1C1U=Ue-j120B1A1U=Ue-j120C1B1又A2，B2，

8、C2絕對值相等，次序為逆時針，稱負序分量U=Uej120A2C2U=Uej120B2A2U=Uej120C2B2而A0，B0，C0絕對值相等且相同，稱零序分量U=U=U=UA0B0C00與此相對應(yīng)的正序、負序、零序電流，和正序、負序、零序阻抗，分別用I/I2，I0和Z，Z，Z表示。120采用以上方法，大大簡化了三相系統(tǒng)中不對稱短路電壓的設(shè)計計算，即利用任一點的三相不對稱短路電壓失量，可以分解為正序、負序和零序三個分量短路電壓這一原理。三相系統(tǒng)中短路電流的關(guān)系可用下列公式表示：三相短路電流13二mE/Z二Ikk兩相短路電流12二mE/Z-Z=込；I(m=1)(m=R，R值請查附表1117，R0值

9、請查附表1825。同時要考慮一些附加很大的電阻，如接觸電阻，接地電阻，應(yīng)請電力保護系統(tǒng)人員注意。8.結(jié)束語a）本文對交聯(lián)電力電纜的短路和熱性能參數(shù)，參照有關(guān)文獻資料進行了較為系統(tǒng)的匯編，供各電纜廠在產(chǎn)品國內(nèi)外銷售投標(biāo)或編制產(chǎn)品樣本時參考。b）本文和電力電纜載量技術(shù)手冊配套后，中低壓電纜熱性能參數(shù)已基本齊全（高太電纜還應(yīng)增加護層感應(yīng)電壓等參數(shù))。1994年上海電纜研究所已出版了載流量技術(shù)手冊一書。從計算結(jié)果表明三芯電纜阻抗特性好，結(jié)構(gòu)對稱，電感值低，采用銅帶屏蔽，結(jié)構(gòu)緊湊，電纜穿管時，敷設(shè)方便，適合我國消弧線圈接地的電力系統(tǒng)中應(yīng)用，已出版的電力工程電纜設(shè)計規(guī)范(GB50217-94)中規(guī)定，優(yōu)選

10、10kV三芯電纜，不是沒有道理的。鑒于我國電力的發(fā)展，將更多地采用雙回路小電阻接地系統(tǒng)，不對稱短路電流增大，應(yīng)采用銅絲作金屬屏蔽，產(chǎn)品將以單芯電纜為主，由于單芯電纜的裝盤量比三芯電纜高3倍，電纜接頭只是三芯電纜的1/3，增加了電纜使用的可靠性，單芯電纜一般均不用鋼帶鎧裝，結(jié)構(gòu)尺寸小，由于鄰近效應(yīng)小，載流量高，今后單芯電纜將愈來愈多，單根制造長度也愈來愈長，在歐州等發(fā)達國家單芯電纜占90%(三芯電纜占10%),希國家標(biāo)準GB50217-94在今后的修訂時，應(yīng)加以考慮。該標(biāo)準對指導(dǎo)電纜生產(chǎn)和消費，將起到?jīng)Q定作用，也是我國國民經(jīng)濟建設(shè)中，電力電纜工業(yè)發(fā)展的方針大計。附表1銅鋁導(dǎo)體短路電流（kA）短路

11、短路時間1秒mm35506580903550101.811.731.641.571.511.191.13162.872.742.602.492.391.881.80254.454.244.033.853.692.912.78356.205.915.625.375.154.063.88508.818.407.987.627.315.775.517012.3011.711.110.610.28.047.699516.6015.815.014.413.810.910.412020.9019.919.018.117.413.713.115026.1024.923.722.621.717.116.318

12、532.1030.629.127.826.721.120.124041.6039.737.736.034.627.326.030051.9049.547.144.943.134.032.540069.1065.962.659.857.445.243.250086.4082.378.374.771.756.654.0630107.0102.096.992.588.870.066.9銅導(dǎo)體截面短路起始溫度。CItt秒鐘短路電流I11秒鐘短路電流（見上表）t1秒鐘附表23.6/6kV單芯電纜金屬屏蔽層起始溫度和短路電流金屬屏蔽層起始溫度和短路電流導(dǎo)體截面mm2金屬屏銅絲mm2敝截面銅帶mm2YJVY

13、JV32起始溫度C銅絲A銅帶A起始溫度C銅絲A銅帶A25163.65673435106135163.656.63476107461.33429106050163.65703423105770163.657.73465107063.23411105495253.658853201052120253.658.45403106864.253141051150253.658.75398106764.753071049185353.659.97532106465.574121047240354.259.97532124165.

14、674101221300354.260.47521123966.074011220400354.260774081221500354.259.37545124365.474141222630354.261.27504123666.473931220附表36/6、6/10kV單芯電纜金屬屏蔽層起始溫度和短路電流354.2金屬屏蔽截面銅絲銅帶mm2mm2163.6163.6163.6163.6253.6253.6253.6354.2354.2354.2354.2354.2金屬屏蔽層起始溫度和短路電流YJVYJV32起始溫度C銅絲A銅帶A起始溫度C銅絲A銅帶A53.5350

15、6108357.93463107054.03501108258.53457106854.53496108059.73445106455.03491107960.43438106255.45449107761.05363106055.75444107761.95349105856.05440107662.35343105757.27590125162.77472123157.57583125063.87448122758.67560124664.27440122658.97553124564.57433122559.27547124464.87427122460.77515123865.9740

16、31220導(dǎo)體截面mm22535507095120150185240300400500630附表48.7/10、8.7/15kV單芯電纜金屬屏蔽層起始溫度和短路電流35 .2金屬屏蔽截面銅絲銅帶mm2mm2163.6163.6163.6163.6253.6254.2254.2354.2354.2354.2354.2354.2金屬屏蔽層起始溫度和短路電流YJVYJV32起始溫度C銅絲A銅帶A起始溫度C銅絲A銅帶A5043497108050.53536109255.03491107950.93532109155.63485107751.43527109056.234801

17、07552.55495108657.25421107252.85489126657.6541512495395409124853.07680126658.67560124654.07659126258.97553124554.37652126159.37545124355.77622125659.87534124156.67603125360.87513123856.97596125261.175061237導(dǎo)體截面mm22535507095120150185240300400500630附表 12/20kV單芯電纜金屬屏蔽層起始溫度和短路電流354.2金屬屏蔽截面銅

18、絲銅帶mm2mm2163.6163.6163.6163.6254.2254.2254.2354.2354.2354.2354.2354.2金屬屏蔽層起始溫度和短路電流YJVYJV32起始溫度C銅絲A銅帶A起始溫度C銅絲A銅帶A48.93551109753.03511108549.33547109653.53506108349.735441095548353310915515515127255.65446125651.45511127156.05440125551.75506127057.05424125452.67689126757.4758

19、6125052.97682126657.6758112495307573124854.5764812605747629125759.57541124256.67603125359.875341241導(dǎo)體截面mm22535507095120150185240300400500630附表 18/30kV單芯電纜金屬屏蔽層起始溫度和短路電流354.2金屬屏蔽截面銅絲銅帶mm2mm2164.2164.2164.2164.2254.2254.2254.2354.2354.2354.2354.2354.2金屬屏蔽層起始溫度和短路電流YJVYJV32起始溫

20、度C銅絲A銅帶A起始溫度C銅絲A銅帶A4743537127547.43566128550.83533127347.73563128451.33528127248.63554128152.43517126849.05548128052.75491126749.25544127953.05486126649.45541127853.45480126450.47736127553.77665126350.77730127454.77644125951.57713127155.07637125851.87706127055.47629125752.97632126655.87

21、620125653175921251導(dǎo)體截面mm22535507095120150185240300400500630附表 21/35kV單芯電纜金屬屏蔽層起始溫度和短路電流354.2金屬屏蔽截面銅絲銅帶mm2mm2164.2164.2164.2164.2254.2254.2254.2354.2354.2354.2354.2354.2金屬屏蔽層起始溫度和短路電流YJVYJV32起始溫度C銅絲A銅帶A起始溫度C銅絲A銅帶A46.23578129049.23548127946.9357112875023568128650.63535127447.

22、63564128551.03531127347.95565128451.45511127148.85551128051.7550612704965492126749.37760127952.97682126650.07745127653.27676126550.37738127553.67667126351.37717127254.47650126151.67710127055.37631125751.87706127056.076161255導(dǎo)體截面mm22535507095120150185240300400500630附表826/35kV單芯電纜金屬屏蔽層起始溫

23、度和短路電流金屬屏蔽截面銅絲銅帶mm2mm2161616162525253535353535354.24.24.24.24.24.24.24.24.24.24.24.24.2YJV金屬屏蔽層起始溫度和短路電流YJV32起始溫度C銅絲A銅帶A起始溫度C銅絲A銅帶A46.246.546.847.148.148.348.549.249.549.750.750.951.73578357535723569556155585555776277567751773077267708129012891288128612831282128212791278127712741273127048.749.149.44

24、9.950.351.151.451.752.152.453.754.054.735533549354735425528551555117708770076937665765976441281127912781277127512721271127012691268126312621259導(dǎo)體截面mm22535507095120150185240300400500630附表93.6/612/20kV三芯電纜銅帶屏蔽層短路電流（包括所有型號：YJV、YJV22、YJV32、YJV42等等）導(dǎo)體截面mm23.6/6kV6/6,6/10kV&7/10,8.7/15kV銅帶截面mm2短路電流A銅帶截面mm

25、2短路電流A銅帶截面mm2短路電流A253X3.029583X3.029583X3.02958353X3.029583X3.029583X3.02958503X3.029583X3.029583X3.02958703X3.029583X3.029583X3.02958953X3.029583X3.029583X3.029581203X3.029583X3.029583X3.530311503X3.029583X3.029583X3.530311853X3.029583X3.530313X3.530312403X3.530313X3.530313X3.530313003X3.530313X3.5

26、30313X3.530314003X3.530313X3.530313X3.530315003X3.530313X3.530313X3.530316303X3.530313X3.530313X3.53031附表10電纜導(dǎo)體20C時直流電阻導(dǎo)體截面mm2導(dǎo)體直徑mm20C下直流電阻銅Q/km鋁Q/km253550709512015018524030040050063067&310.011.613.014.616.218.420.623.826.630.00.7270.5240.3870.2680.1930.1530.1240.09910.07540.06010.04700.03660.02831

27、.2600.8680.6410.4430.3200.2530.2060.1640.1250.1000.0780.06050.0469附表126/6,6/10kV單芯、三芯電纜工作溫度下導(dǎo)體交流電阻Q/km附表113.6/6kV單芯、三芯電纜工作溫度下導(dǎo)體交流電阻Q/km導(dǎo)體截面mm2單芯電纜三芯電纜所有型號YJVYJV32YJV42銅鋁銅鋁銅鋁銅鋁250.92711.53850.92711.53850.92711.53850.92711.5385350.66831.11300.66831.11300.66831.11300.66851.1130500.49360.82200.49360.822

28、00.49360.82200.49380.8220700.34200.56810.34200.56810.34200.56810.34220.5683950.24650.41850.24660.41050.24650.41050.24630.41071200.19560.32470.19560.32470.19560.32470.19600.32491500.15880.26450.15870.26450.15870.26450.15930.26481850.12720.21080.12710.21070.12710.21070.12790.21122400.09720.16090.09710

29、.16090.09710.16080.09820.16153000.07800.12900.07790.12900.07780.12890.07920.12964000.06160.10100.06150.10100.06150.10100.06330.10215000.04890.07890.04870.07880.04870.07880.05090.08036300.03890.06190.03870.06170.03860.06170.04160.0637導(dǎo)體截面mm2單芯電纜三芯電纜所有型號YJVYJV32YJV42銅鋁銅鋁銅鋁銅鋁250.92711.53850.92711.53850

30、.92711.53850.92711.5385350.66831.11300.66831.11300.66831.11300.66841.1130500.49360.82200.49360.82200.49360.82200.49370.8220700.34200.56810.34200.56810.34200.56810.34220.5683950.24650.41850.24660.41050.24650.41050.24670.41061200.19560.32470.19560.32470.19560.32470.19590.32491500.15880.26450.15870.264

31、50.15870.26450.15920.26481850.12720.21080.12710.21070.12710.21070.12770.21112400.09720.16090.09710.16090.09710.16080.09800.16143000.07790.12900.07790.12900.07780.12890.07910.12974000.06160.10100.06150.10100.06150.10090.06320.10205000.04890.07890.04870.07880.04870.07880.05090.08026300.03890.06190.038

32、70.06180.03860.06170.04150.0636附表138.7/10,8.7/15kV單芯、三芯電纜工作溫度下導(dǎo)體交流電阻Q/km導(dǎo)體截面mm2單芯電纜三芯電纜所有型號YJVYJV32YJV42銅鋁銅鋁銅鋁銅鋁250.92711.53850.92711.53850.92711.53850.92711.5385350.66831.11300.66831.11300.66831.11300.66841.1130500.49360.82200.49360.82200.49360.82200.49370.8220700.34200.56810.34230.56810.34200.5681

33、0.34210.5682950.24650.41850.24660.41050.24650.41050.24670.41061200.19560.32470.19560.32470.19560.32470.19580.32481500.15880.26450.15870.26450.15870.26450.15910.26471850.12720.21080.12710.21070.12710.21070.12760.21102400.09720.16090.09710.16090.09710.16080.09780.16133000.07790.12900.07790.12900.07780

34、.12890.07880.12954000.06160.10100.06150.10100.06150.10090.06280.10185000.04890.07890.04870.07880.04870.07880.05040.07996300.03890.06190.03870.06180.03860.06170.04090.0632Q/km附表1412/20kV單芯、三芯電纜工作溫度下導(dǎo)體交流電阻導(dǎo)體截面mm2單芯電纜二芯電纜所有型號YJVYJV32YJV42銅鋁銅鋁銅鋁銅鋁250.92711.53850.92711.53850.92711.53850.92711.5385350.668

35、31.11300.66831.11300.66831.11300.66841.1130500.49360.82200.49360.82200.49360.82200.49370.8220700.34200.56810.34200.56810.34200.56810.34210.5682950.24650.41850.24660.41050.24650.41050.24660.41061200.19560.32470.19560.32470.19560.32470.19580.32481500.15880.26450.15870.26450.15870.26450.15900.26461850.

36、12720.21080.12710.21070.12710.21070.12750.21102400.09720.16090.09710.16090.09710.16080.09770.16123000.07790.12900.07790.12900.07780.12890.07870.12954000.06160.10100.06150.10100.06150.10090.06270.10175000.04890.07890.04870.07880.04870.07880.05030.07986300.03890.06190.03870.06180.03860.06170.04070.063

37、1附表 21/35kV單芯、三芯電纜工作溫度下導(dǎo)體交流電阻Q/km附表 18/30kV單芯、三芯電纜工作溫度下導(dǎo)體交流電阻Q/km導(dǎo)體截面mm2單芯電纜YJVYJV32YJV42銅鋁銅鋁銅鋁250.92711.53850.92711.53850.92711.5385350.66831.11300.66831.11300.66831.1130500.49360.82200.49360.82200.49360.8220700.34200.56810.34200.56810.34200.5681950.24650.41850.24650.41050.24650.41051200.19560.3247

38、0.19550.32460.19550.32461500.15870.26450.15870.26450.15870.26451850.12710.21070.12710.21070.12710.21072400.09710.16080.09710.16080.09710.16083000.07780.12890.07780.12890.07780.12894000.06150.10100.06140.10090.06140.10095000.04870.07880.04870.07880.04860.07876300.03860.06170.03870.06170.03850.0616導(dǎo)體截

39、面mm2單芯電纜YJVYJV32YJV42銅鋁銅鋁銅鋁250.92711.53850.92711.53850.92711.5385350.66831.11300.66831.11300.66831.1130500.49360.82200.49360.82200.49360.8220700.34200.56810.34200.56810.34200.5681950.24650.41850.24650.41050.24650.41051200.19560.32470.19550.32460.19550.32461500.15870.26450.15870.26450.15870.26451850.

40、12710.21070.12710.21070.12710.21072400.09710.16080.09710.16080.09710.16083000.07780.12890.07780.12890.07780.12894000.06150.10100.06140.10090.06140.10095000.04870.07880.04860.07880.04860.07876300.03860.06170.03850.06170.03850.0616附表1726/35kV單芯、三芯電纜工作溫度下導(dǎo)體交流電阻Q/km導(dǎo)體截面mm2單芯電纜YJVYJV32YJV42銅鋁銅鋁銅鋁250.9271

41、1.53850.92711.53850.92711.5385350.66831.11300.66831.11300.66831.1130500.49360.82200.49360.82200.49360.8220700.34200.56810.34200.56810.34200.5681950.24650.41850.24650.41050.24650.41051200.19560.32470.19550.32460.19660.32461500.15870.26450.15870.26450.15870.26451850.12710.21070.12710.21070.12710.21072

42、400.09710.16080.09710.16080.09710.16083000.07780.12890.07780.12890.07780.12894000.06150.10100.06140.10090.06140.10095000.04870.07880.04860.07880.04860.07876300.03860.06170.03850.06170.03850.0616附表 6/6、6/10kV單芯電纜金屬屏蔽層起始溫度和交流電阻附表 3.6/6kV單芯電纜金屬屏蔽層起始溫度和交流電阻導(dǎo)體截面mm2金屬屏蔽截面金屬屏蔽層起始溫度和交流電阻Q/km銅絲mm2銅帶mm2YJVYJV

43、32YJV42起始溫度銅絲銅帶起始溫度銅絲銅帶起始溫度銅絲銅帶25163.656.11.3135.88160.71.3345.97460.31.3325.96635163.656.61.3155.89161.31.3375.98661.01.3355.98050163.657.11.3185.90162.01.3406.00060.21.3325.96470163.657.71.3195.91363.21.3456.02462.51.3426.01095253.658.10.8365.92163.80.8526.03663.50.8516.030120253.658.40.8375.92764

44、.20.8536.04564.00.8536.041150253.658.70.8385.93364.70.8556.05564.40.8546.045185353.659.90.6065.95865.50.6186.07164.80.6166.057240354.259.90.6065.09065.60.6185.18965.60.6185.189300354.260.40.6075.09966.00.6195.19565.40.6175.185400354.260.10.6075.09365.70.6165.19065.20.6175.182500354.259.30.6055.08065

45、.40.6175.18565.70.6185.190630354.261.20.6095.11266.40.6205.20266.00.6195.195導(dǎo)體截面mm2金屬屏蔽截面金屬屏蔽層起始溫度和交流電阻Q/km銅絲mm2銅帶mm2YJVYJV32YJV42起始溫度銅絲銅帶起始溫度銅絲銅帶起始溫度銅絲銅帶25163.653.51.3015.82857.91.3175.91757.61.3205.91135163.654.01.3045.83858.51.3245.92958.21.3235.92350163.654.51.3065.84859.71.3295.95459.01.3265.93

46、970163.655.01.3085.85860.41.3335.96860.11.3315.96295253.655.40.8285.85861.00.8445.98061.20.8455.984120253.655.70.8295.87361.90.8475.99861.20.8455.984150253.656.00.8305.87962.30.8486.00661.60.8465.992185354.257.20.6015.04362.70.6125.13862.70.6125.138240354.257.50.6015.04863.80.6145.51763.30.6135.1493

47、00354.258.60.6035.06764.20.6155.16463.50.6145.152400354.258.90.6045.04364.50.6165.16964.70.6165.173500354.259.20.6055.09864.80.6165.17565.10.6175.180630354.260.70.6085.10465.90.6195.19465.40.6175.185附表208.7/10、8.7/15kV單芯電纜金屬屏蔽層起始溫度和交流電阻導(dǎo)體截面mm2金屬屏蔽截面金屬屏蔽層起始溫度和交流電阻Q/km銅絲mm2銅帶mm2YJVYJV32YJV42起始溫度銅絲銅帶起始

48、溫度銅絲銅帶起始溫度銅絲銅帶25163.650.11.2865.75954.41.3055.84653.81.3035.83435163.650.51.2885.76755.01.3085.85854.71.3075.85250163.650.91.2905.77555.61.3115.87155.41.3105.86670163.651.41.2925.78656.21.3145.88354.11.3045.84095253.652.50.8205.80857.20.8335.90356.60.8325.891120254.252.80.8214.96757.60.8345.05057.60

49、.8345.050150254.253.10.8224.97258.00.8365.05758.10.8365.059185354.253.00.5924.97158.60.6035.06758.00.6025.057240354.254.00.5944.98858.90.6045.07358.50.6035.066300354.254.30.5954.99359.30.6055.08058.90.6045.073400354.255.70.5985.01759.80.6065.08860.00.6065.092500354.256.60.5995.03360.80.6085.10660.40

50、.6075.099630354.256.90.6005.03861.10.6095.11160.30.6075.097附表 18/30kV單芯電纜金屬屏蔽層起始溫度和交流電阻附表 12/20kV單芯電纜金屬屏蔽層起始溫度和交流電阻導(dǎo)體截面mm2金屬屏蔽截面金屬屏蔽層起始溫度和交流電阻Q/km銅絲mm2銅帶mm2YJVYJV32YJV42起始溫度銅絲銅帶起始溫度銅絲銅帶起始溫度銅絲銅帶25163.648.91.2815.73553.01.2935.81852.81.2985.81435163.649.31.2825.74353.51.3015.82853.31.3005.82450163.649

51、.71.2845.75154.11.3045.84053.91.3035.83670163.650.81.2895.77355.11.3095.86054.51.3065.84895254.251.10.8164.93055.60.8295.01655.60.8295.016120254.251.40.8174.94356.00.8305.02356.00.8305.023150254.251.70.8184.94857.00.8335.04056.40.8305.029185354.252.60.5914.96457.40.6015.04756.80.6005.036240354.252.9

52、0.5924.96957.60.6015.05057.20.6015.043300354.253.10.5924.97258.00.6025.05758.20.6035.061400354.254.50.5954.99757.10.6005.04258.70.6045.069500354.255.40.5975.01259.50.6045.07459.10.6055.076630354.256.60.5995.03359.80.6065.08859.90.6065.090導(dǎo)體截面mm2金屬屏蔽截面金屬屏蔽層起始溫度和交流電阻Q/km銅絲mm2銅帶mm2YJVYJV32YJV42起始溫度銅絲銅帶

53、起始溫度銅絲銅帶起始溫度銅絲銅帶25164.247.11.2724.86950.41.2874.92650.41.2874.92635164.247.41.2744.87450.01.2894.93350.81.2894.93350164.247.71.2754.87951.31.2914.94151.31.2914.94170164.248.61.2794.89552.41.2964.96051.91.2944.95295254.249.00.8104.90152.70.8204.96552.30.8194.959120254.249.20.8104.90553.00.8214.97152.

54、70.8204.955150254.249.40.8114.90353.40.8224.97853.60.8234.981185354.250.40.5874.92653.70.5934.98353.90.5944.986240354.250.70.5874.93154.70.5955.00054.30.5954.993300354.251.60.5894.94555.00.5965.00554.70.5955.000400354.251.80.5894.95055.40.5975.01255.50.5975.014500354.252.90.5924.96955.80.5965.00255.

55、40.5975.012630354.253.10.5924.97257.10.6005.04256.80.6005.036附表 26/35kV單芯電纜金屬屏蔽層起始溫度和交流電阻附表 21/35kV單芯電纜金屬屏蔽層起始溫度和交流電阻導(dǎo)體截面mm2金屬屏蔽截面金屬屏蔽層起始溫度和交流電阻Q/km銅絲mm2銅帶mm2YJVYJV32YJV42起始溫度銅絲銅帶起始溫度銅絲銅帶起始溫度銅絲銅帶25164.246.21.2684.85349.21.2824.90549.31.2824.90735164.246.91.2724.86550.11.2864.92049.71.2844.91450164.2

56、47.21.2734.87050.61.2884.92950.11.2864.92070164.247.61.2754.87751.01.2904.93650.71.2894.93195254.247.90.8074.88251.40.8174.94351.50.8174.945120254.248.80.8094.89851.70.8184.94851.90.8184.952150254.249.10.8104.90352.60.8204.96452.10.8194.955185354.249.30.8544.90752.90.5924.96952.60.5914.964240354.250

57、.00.5864.91953.20.5924.97452.90.5924.969300354.250.30.5864.92453.60.5934.98153.60.5934.981400354.251.30.5884.94154.40.5954.99553.70.5934.983500354.251.60.5894.94655.30.5975.01055.00.5965.005630354.251.80.5894.95056.00.5985.02355.30.5975.010導(dǎo)體截面mm2金屬屏蔽截面金屬屏蔽層起始溫度和交流電阻Q/km銅絲mm2銅帶mm2YJVYJV32YJV42起始溫度銅絲

58、銅帶起始溫度銅絲銅帶起始溫度銅絲銅帶25164.246.21.2684.85348.71.2804.89648.81.2804.89835164.246.51.2704.85849.11.2824.90349.21.2824.90550164.246.81.2714.86349.41.2834.90849.61.2844.91270164.247.11.2724.86949.91.2854.91750.51.2884.92795254.248.10.8074.88650.30.8144.92450.90.8154.934120254.248.30.8084.88951.10.8164.9385

59、1.30.8164.941150254.248.50.8084.89351.40.8174.94351.60.8174.946185354.249.20.5844.90551.70.5894.90451.90.5904.952240354.249.50.5854.91052.10.5904.95552.60.5914.964300354.249.70.5854.91452.40.5914.96052.90.5924.969400354.250.70.5874.93153.70.5934.98253.90.5944.986500354.250.90.5884.93454.00.4934.9885

60、4.30.5954.993630354.251.70.5894.98454.70.5955.00055.10.5965.007附表253.6/612/30kV三芯電纜銅帶屏蔽交流電阻（包括所有型號YJV、YJV22、YJV32、YJV42等）導(dǎo)體3.6/6kV6/66/108.7/108.7/1512/20截面銅帶截面交流電阻銅帶截面交流電阻銅帶截面交流電阻銅帶截面交流電阻mm2mm2Q/kmmm2Q/kmmm2Q/kmmm2Q/km253*3.02.5883*3.02.5883*3.02.5883*3.02.588353*3.02.5883*3.02.5883*3.02.5883*3.02.