本文選題：電纜終端 + 應力錐　； 參考：《高電壓技術(shù)》2017年02期

【摘要】：在電力系統(tǒng)中,預制橡膠應力錐是高壓電纜終端的關(guān)鍵組成部分,它的特性決定了高壓電纜運行的安全性。為此,通過建立預制橡膠應力錐的有限元數(shù)值仿真模型,分析了110 kV電纜終端的電場強度分布情況,提出采用非線性電導復合材料來替換固定電導材料,實現(xiàn)材料性能參數(shù)與空間電場強度大小的自適應匹配,起到智能改善空間電場強度分布的作用。結(jié)合理論分析,進一步確定了非線性電導材料參數(shù)。不同材料應力錐終端電場強度分布的對比結(jié)果表明:若非線性區(qū)域出現(xiàn)時所需電場強度過大,則會造成應力錐錐面處的電場強度過大;若非線性區(qū)域出現(xiàn)時所需電場強度過小,則會造成三相交界點處電場強度過大。選取合適的非線性電導材料對于應力錐錐面和交界點處的電場強度具有均勻作用,對發(fā)展更高電壓等級電纜具有促進作用。
[Abstract]:In power system, prefabricated rubber stress cone is the key component of HV cable terminal, and its characteristics determine the safety of HV cable operation. Based on the finite element simulation model of prefabricated rubber stress cone, the distribution of electric field intensity of 110 kV cable terminal is analyzed, and the nonlinear conductance composite material is proposed to replace the fixed conductance material. The adaptive matching between the material performance parameters and the spatial electric field intensity is realized, which plays an intelligent role in improving the spatial electric field intensity distribution. Based on the theoretical analysis, the nonlinear conductance material parameters are further determined. The comparison of electric field intensity distribution at the end of stress cone of different materials shows that if the electric field intensity is too large when the nonlinear region appears, it will cause the electric field intensity at the cone of stress cone to be too large, and if the electric field intensity is too small when the nonlinear region appears, The electric field intensity at the three-phase junction will be too large. The selection of suitable nonlinear conductance material has a uniform effect on the electric field intensity at the conical surface and the junction point of the stress cone and promotes the development of higher voltage grade cable.
【作者單位】： 清華大學電機工程與應用電子技術(shù)系電力系統(tǒng)及發(fā)電設(shè)備控制和仿真國家重點實驗室;
【基金】：國家重點基礎(chǔ)研究發(fā)展計劃(973計劃)(2014CB239504) 國家自然科學基金(51007046)~~
【分類號】：TM75

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