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(,210024)220kV:2009-08-10;:2009-09-12:,、220kV,220kV。:;;:TM757:B:10090665(2009)06004905JiangsuElectricalEngineering200911286,,,,。,。,90%。、,,,。,。,,、。,。220kV,,,、。1,,。,、、、。220kV。,3467m,2935m,14.5m,13.3m。,3,,。2.5m,,。,,220kV,1~3。13467m2492220kV21(1),,。220kV25kA,0.3m。F=2.05i2LKD×10-7(1)174.3kg/m,2m,2m348.6kg,2。,,。(2),。,90℃(85℃),,,,。,,。,220kV45℃,110kV30℃,。(3),2500mm2()220kVXLPE38kg/m,,50kg/m;3、、,250kg/m。,。,,,。(4),,,、、。GB—6830“”,,650V,,60%85%;,60V。。,,,。,。,,5m,,0.129V;,123.64V。。,。,,,,,。,,,,220kV5m。,220kV。(5),,。,1965220kV270km110kV(1995),,。,1985110kV,100km110kV(,XLPE),。(110kV),110kV,,,350:220kV,0.1s,,,。,。,,、,。,,,。,,,,。,220kV,。(6),,。,,。(7)。2。①。,。,,104Ω·cm。,105Ω·cm。。,,4.2。,,。②。,,。,,100℃,,。,250℃,。300℃,。,,90℃,50℃。,。,,;150℃,,;250℃,。,,250℃,。222.2.1220kVXLPE:、、、、PVC。,。,。2.2.2《500kV》(HJ/T24—1998)。《》,100μT。WHO1995“EMF”(),,。50Hz,,,220kV4m,,,。,、,,,。,,,,,。2.2.3,,、。50~60Hz,51。,0.03~3.0s,Ib:I2b·t=K(2):I2b(),A;t,s;K,x%。(2),,。(IEEE)Std80—1976《》:,95mA,,。,I,I=2.27×10-4mAIbmin=95mA,。,,。,。,。,。2.2.4,500kV50kA,,1km,9.4kV,,。,,。,,。,:220kV。23,,,。,,,。331,,,。,,100mm,。,,。32()(1),,。,,,,。,,,,。(2)。,。、,,。。(3),(1)、(2),,,,。(4),,,。33,,。,,。4、41,,。,,,,,52:220kV。,。,,,。,380m,50V,,100V,,,760m。2500mm2,,,,,。3km,,3.2km,,280m,12,4。,5D900mm(,),,,,()。,,,,。4。,,。,。42220kV,,,。。、,。。,,,,,,、,。43,。,,。,,,。,,,。1℃,1m,。2,,,。,,,,,。5220kV,、,220kV。:(1972),,,,。530m4TheFeasibilityResearchonLayingHighVoltageCableof220kVandAboveinMunicipalTunnelDINGYong-hui(JiangsuKenengElectricPowerEngineeringConsultingCo.,Ltd.,Nanjing210036,China)Abstract:Combiningthepresentsituationoflayinghighvoltagecableinmunicipaltunnel,thepaperanalysesthefeasibilityoflayinghighvoltagecableof220kVaboveinlefttunnelofWeiqiRoadriverchunnelinNanjingfromtheaspectsofsecurity,construction,operationandsoforth.Aconclusionismadethattheprojectoflayingthehighvoltagecableof220kVaboveinmunicipaltunnelisfeasible.Keywords:municipaltunnel;highvoltage;feasibility53
本文标题:利用市政公用隧道敷设220kV及以上等级高压电缆的可行性研究
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