高压交联聚乙烯绝缘直流电力电缆工艺设计分析

79!!XLPE/XLPE1!፛ዔ[1]HUAJian-Fei,ZHANGZhi-gang,WEIXue-zhi,SHIChun-jing,YANGLi-weiHangzhouCableCo.,Ltd,Hangzhou311400,ChinaAbstractAbstractTheHVDCElectricfielddistributionofhigh-pressurecross-linkedpolyethylene(XLPE)insulationcablewascalculatedandanalyzed,andthedifferencebetweenthemwasdiscussed.InACtransmission,electricfieldintensitydistributionisrelatedtocablediameterandinsulationthickness,andwasinverselyproportionaltodielectricconstant.WhileinDCtransmission,exceptforthecablestructureandsize,electricfieldintensitydistributionwasalsorelatedtoinsulationmaterialsresistance,cableloadandtemperature,anditchangesbetweentheinnerandoutersurfaceofInsulator.Duetodifferentelectricfielddistribution,AC/DCcablesaredifferentindesignandproductionprocess.ThroughreasonabledesignprocessforXLPEinsulationcable,AC/DCcablescanbeguaranteedlongtermstableoperation.KeywordsKeywordsHVACcableHVDCcableelectricfieldXLPE;VCV80!!kVmm2mmmmmmkV/mmkV/mmkV/mmkV/mm15063032.915.062.915.96.58.111.7160052.214.080.215.27.67.713.925063033.522.077.520.26.810.312.3160052.820.092.819.08.49.715.22!!঱ኹᒇഗୣೊ௡ጰᇭ௾Ꮟ࢟಄ᒦ!!!௾Ꮟดݝ࢟ޝॊݚॊᇜ[2]1ρ00θαα≈0.051/[3]2θcθsRrcr213454566ββ(1)β=06(2)β=1(3)β1rβ-1(4)β1rβ-16±150kV±250kV13!!঱ኹୣ0ᒇഗ࢟಄ᒦ௾Ꮟดݝ࢟ޝ!!!ॊݚތፊॊᇜ5050Hz81!!(1)(2)(3)(4)4!!঱ኹᒇഗ࢟಄௾Ꮟୣೊ৔ጳ࿸ଐ7090MaillefferVCVΦ20024D2150107tt1T1E1.52×105R8.3141501010rpmt=240.215rpmt=190.120rpmt=119.810rpm~12rpm2753.2.1MaillefferVCVD250mm95.2mm250kV-1600VCV8θθcγ3.04λ0.45rc82!!R8rR250kV-1600mm2345276.4345330255.23.2.280901705!!௾Ꮟށୣೊ৔ጳࡼෝผᎧހ၂MaillefferNCC250kV-1600mm28090330285235205167251.3NCC3716525251.316720.61085951763030026523520522578.86!!உ൙170167255.2251.3168165249.5