交流500kV海底电力电缆结构设计

20101No.12010ElectricWire&Cable20102Feb.,2010500kV李健,郑伟(,430071):以南方主网与海南电网联网跨越琼州海峡500kV海底电力电缆工程为例,介绍了交流500kV海底电缆的形式导体绝缘铅护套加强层铠装层的设计原则和思路:海底电力电缆;结构设计;机电特性;载流量:TM247.9;TM247.3:A:1672-6901(2010)01-0011-04Designof500kVACSubmarinePowerCablesLIJian,etal(Centra-lSouthChinaElectricPowerDesignInstitute,Wuhan430071,China)Abstract:Thispaperpresentstheprincipleandphilosophyofdesignofthetype,construction,insulation,leadsheath,strengtheningcoveringandarmourof500kVACsubmarinepowercables,takingthe500kVACsubmarinepowercableconnectingtheSouthChinaPowerGridandHainanPowerGridasanexample.Keywords:submarinepowercable;designofconstruction;mechanicalandelectricperformance;ampacity:2009-06-15:(1981-),,.:668[430071].0,500kV()500kV,3@31km,()600MW,,,500kV11,122.1:(1);1500kV1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-(2);(3),,,22.8A/km,50%,815A600MWIEC60287,,90bC,800mm2,()815.3A,815A,1/mm/mm1)30.02()7.344.63()0.545.64()28.55102.75(+)0.5103.760.4104.574.4113.380.25113.89()0.6115.0100.2115.4114.8125.0120.2125.4130.25125.914()2.4130.715()4.0138.7:48kg/m,32.7kg/m;(8#mm2/km)17.241,214,21.55,17.241;3.5,2.3IEC60949/00.5s,162523A,53493A,800mm2,0.043+j0.0818/km,31km,600MW,0.4%,,815A,,1%,800mm299.9%1000mm2,,,,30mm,()2.2,60,(XLPE),,,XLPE,,,,,,,,,,:Em=UrclnRrc(1),E;m,1.2~1.3;U;rc;R,$i($i=R-rc)28.55mm,22/kV/(kV/mm)/(kV/mm)U52516.377.27(BIL)155083.737.22,(),();()2.3,,#12#20101No.12010ElectricWire&Cable20102Feb.,2010,:,;,;;,F3,,,,1/2C,1/2CF3,1/2C2.4,,4,,,2,,113.2MPa,430MPa4,,,,,,2.5(PE),;,,PE,PE:U23maxU0=C12C12+C23(1-e-Bx)(2),U0;U23;C12;C23;B;xPE,,,:,PE8kV/mm,4.4mm,PE(U23max)35.2kV,(2),11.139km,8km,,26.2kV,PE,2.6,,PE,,,,,,PE2.7,,,,,,,30%~40%IEC55-2(1981):,Electra171CIGRE,100m,:8s4m,?5.9kN;12.7kN;60.8kN;87.5kN87.5kN,,945mm255%,49.2N/mm2;100N/mm2,300N/mm2,,0.1%,,34.7MPa,(50MPa),(18)#13#20101No.12010ElectricWire&Cable20102Feb.,2010IS3jXkln2SDS+12ln2+32jln2=-jXkI3ln2SDS+12ln2+32jln2(30)(30):IS3=-I3,,3#,,CD,,2.3CD,1,S1=S2=S,S3=pS,(p2)CDCD,,(25)~(30)ln2lnp,2#,(24):IS2=-jXkI2ln2SDS-13lnpRS+jXkln2SDS-13lnp(31)1#,(27):IS1jXkln2SDS+12lnp-32jlnp=-jXkI1ln2SDS+12lnp-32jlnp(32)3#,(27):IS3jXkln2SDS+12lnp+32jlnp=-jXkI3ln2SDS+12lnp+32jlnp(33)(31)(32)(33),CD,,:p=1,CD;p=2,CD,;p=2,CD,CD,,,,,,p:1p23,CD,,,,CD:[1]HonjoS,eta.lVerificationtestsofa66kVHigh-TCsupercon-ductingcablesystemforpracticaluse[C]//CIGRESession,2002.21-202.(13)2.8,,,3500kV,;;500kV,,:[1],.[M].:,1981.[2].[M].:,2005.[3],.[M].:,1999.#18#20101No.12010ElectricWire&Cable20102Feb.,2010