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1、第32卷第3期深圳大學(xué)學(xué)報(bào)理工版Vo1．32No．32015年5月J0URNALOFSHENZHENUNIVERSITYSCIENCEANDENGINEERINGMav2015【電子與信息科學(xué)／ElectronicsandInformationScience】高壓輸電線下三維工頻電場(chǎng)的矩量法數(shù)學(xué)計(jì)算王敬曉，李斌，高艷霞深圳大學(xué)物理科學(xué)與技術(shù)學(xué)院，深圳518060摘要：基于模擬電荷法與矩量法，考慮弧垂和檔距等因素的影響，建立超高壓輸電線路工頻電場(chǎng)三維仿真計(jì)算模型，研究超高壓輸電線路工頻電場(chǎng)的分布．以500kV單回三相水平排列線路為例，對(duì)型號(hào)為4×LGJ一4
2、00／35(外徑為26．82mm，分裂間距為450mm)，懸掛點(diǎn)對(duì)地高度為20m，導(dǎo)線間距為8m，呈懸鏈線的導(dǎo)線進(jìn)行模擬計(jì)算．結(jié)果表明，考慮導(dǎo)線弧垂后，隨著檔距增大，弧垂加大，導(dǎo)線對(duì)地距離減小，導(dǎo)線下方的場(chǎng)強(qiáng)增大．在垂直檔距中央的橫向分布上，懸鏈線模型與二維模型計(jì)算結(jié)果接近，曲線形狀基本一致．導(dǎo)線形狀的差異會(huì)導(dǎo)致沿導(dǎo)線走向的場(chǎng)強(qiáng)分布存在很大差異．研究可供電網(wǎng)建設(shè)和生產(chǎn)運(yùn)行參考．關(guān)鍵詞：電磁學(xué)；工頻電場(chǎng)；模擬電荷法；矩量法；檔距；高壓輸電線路中圖分類(lèi)號(hào)：TM743文獻(xiàn)標(biāo)志碼：Adoi：10．3724／SP．J．1249．2015．03290Mathemat
3、icalcalculationof3DpowerfrequencyelectricfieldunderhighvoltagetransmissionlinesbasedonmomentmethodWangJingxiao，LiBin，andGaoYanxiaCollegeofPhysicsScienceandTechnology，ShenzhenUniversity，Shenzhen518060，P．R．ChinaAbstract：Byusingthechargesimulationandthemomentmethodandtakingtheeffect
4、sofsagandspanintoaccountaccordingtothepracticalengineeringcircumstances，weproposeasimulationmodeltoanalyzethethree—dimensionaldistributionofpowerfrequencyelectricfieldunderhighvoltagepowertransmissionlines．Thismodelisappliedonahorizontallyarranged500kVthree—phasesingleloopline，in
5、whichthewire(4×LGJ一400／35withouterdiameterof26．82mmandbundlespacingof450mm)issuspendedattheheightof20mincatenarywithwirespacingof8m．Simulationresultsshowthatthespanandsagincreasewiththedecreaseofdistancebetweenwiresandtheground，leadingtothestren~henedfieldintensityunderthewires．T
6、hetransversedistributionofthefieldintensityinthemiddleofspancalculatedbythefunicularcurvemodelisanalogoustothatbythetwo-dimensionalmode1．However．thefieldintensitydistributionalongthewirevariesaccordingtothedifferentshapesofwires．Thisresultcanofferguidanceforthepowergridconstructi
7、onandoperation．Keywords：electromagnetism；powerfrequencyelectricfield；chargesimulationmethod；themethodofmoments；span：highvoltagetransmissionlineReceived：2014．12-12：Accepted：2015．04．14Foundation：NationalNaturalScienceFoundationofChina(61275101)十Correspondingauthor：ProfessorGaoYanxi
8、a．E-mail：gyx@SZU．edu．cnCitation：WangJing
