XLPE电缆绝缘介损正切检测方法研究  

Study on Tangent Test Methods of Dielectric Loss in XLPE Cable Insulation

作　　者：李鹏[1] LI Peng(Zhengzhou Electric Power College, Zhengzhou 450000, China)

机构地区：[1]郑州电力高等专科学校

出　　处：《电工技术》2019年第17期127-128,132,共3页Electric Engineering

基　　金：郑州市科技局普通科技攻关项目(编号131PPTGG427)

摘　　要：分析了工频电压、0.1Hz超低频电压、串联谐振条件下现场测量XLPE电缆tanδ的适用性及优缺点。对比发现,工频电压下用电桥测量tanδ能准确反映XLPE电缆的绝缘状况,但电桥容量较小限制了其使用范围;0.1Hz超低频电压下测量tanδ的方法得到了广泛研究和认同,但tanδ值不能表征XLPE电缆工频电压下的绝缘状况;串联谐振装置测量tanδ能基本反映XLPE电缆的绝缘状况,但配套设备体积制约了其应用。The applicability, advantages and disadvantages of tan δ of XLPE cable insulation under field conditions, i.e., power frequency voltage, 0.1Hz very-low frequency voltage and frequency series resonance, were analyzed. After comparison, the results showed that using dielectric loss bridge to test tan δ under power frequency voltage could truly reflect insulation condition of XLPE cable, but the lesser capacity of bridge restricted its range of application. The method to test tan δ under 0.1Hz very-low frequency voltage was widely researched and approved, but the test value could not represent true insulation condition of XLPE cable under power frequency voltage. To test tan δ under frequency series resonance condition could fundamentally reflect insulation condition of XLPE cable, but the larger corollary equipment of frequency series resonance testing system restricted this method′s application.

关 键 词：交联聚乙烯电缆 介损正切(tanδ) 超低频 串联谐振 

分 类 号：TM427[电气工程—电器]