多回路电缆布置优化的研究

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1、维普资讯http://www.cqvip.com笫32卷第ll1J9J高电压技术V0I_32No．】l·64·2006q-：11月HighVoltageEngineeringNOV．2006多回路电缆布置优化的研究苏巍，明安持(中南电力设计院，武汉430071)摘要：为降低城市多回路电缆平行敷设工程的造价，可采用改变各回路电缆相序的方式来降低电缆金属护层上的感应电压为此，通过感应电压计算和矢量分析法，分析了多回路高压电缆线路变化布置方式对电缆金属护层感应电压的影响，结果表明：减小同一回路三相电缆的相间距离或增大不同回路电缆之间的回路距离，可以降低多

2、回路平行敷设电缆金属护层的感应电压值；多回路电缆线路的布置中，不同的相序排列组合对电缆金属护层的感应电压值有明显影响。因此，在敷设多回路电缆时，应兼顾有利于电缆散热和降低电缆金属护层感应电压值两方面，确定电缆之间的距离。关键词：电缆工程；优化布置；电缆护层；感应电压；相序排列中图分类号：TM247文献标识码：A文章编号：1003-6520(2006)11—006403ResearchbftheMulticircuitHVCablesCollocationOptimizationSUWei，MlNGAnch(CentralSouthernElectr

3、icPowerI)esignInstitute，Wuhan43007China)Abstract：Asthedevelopmentofthecities。muhicircuitHVcablesarecollocatedmoreandmore．Forcuttingdownthecostoftheprojeels-itshouldbeconsideredthatchangingthedifferentphasesequencearrangetOreducethein—ductionvoltageonthecablemetalprotectinglaye

4、r．Througl1calculatingandthevectoranalysisoftheinductionvolt—ageonmuhieircuitHVcablel~etalprotecringlayer，theresultiSgivent)Increasingthedistanceofthecablescanimprovethecoolingcondition，infavorOfrunningsafely．2)Reducingthedistanceofthedifferentphaseofthesamecircuitcanreducethei

5、nductionvoltageonthecablernetatprotectinglayer．3)Increasingthedistaliceofthedifferentcircuitscanreducetheinductionvohageonthecablemeta】protectingJayer．4)InthecollocationofmuhicircuitHVcables，thedifferentphasesequencearrangecanrenlarkablyeffecttheinductionvoltageonthecablemetal

6、protectinglayer-throughcalculatingtheworstandthebestwayofcablearrangecanbegotten．5)wheneollocatingthemut—ticircuitHVcables-weshouldconsidernotonlythecabletoolingrequirement．butalsotheinductionvoltageonthecablemetalprotectinglayertoconfirmthedistanceofthedifferentcables．6)Throu

7、ghoptimizingthesequencear—rangeofthemtdticircuitHVcables．wecanreducetheinductionvoltageonthecablemetalprotectinglayerandSOreducethequantityofthetie-inofthepowercables。finallycutdownthecost．Keywords：powercahleproject；collocationoptimization；powercableprotectinglayer；inductionvo

8、ltage；phasese—queneearrange本文分析研究多回路高压电缆布置的优化问题。0引言1同一回路内三相单芯