高压直流电缆终端载流量确定方法

发布时间：2018-04-11 11:34

本文选题：高压直流 + 电缆终端　；参考：《电网技术》2015年09期

【摘要】：高压直流电缆终端载流量与其稳态温度分布之间存在密切联系,为了研究载流量的准确计算问题,提出了一种基于迭代方法和ANSYS仿真软件的高压直流电缆终端载流量确定方法,以线芯最高长期允许温度和XLPE绝缘层、硅橡胶绝缘层径向最大允许温差作为限流条件;通过对比分析了未使用迭代方法和使用迭代方法时载流量的决定因素(线芯最高允许温度和XLPE绝缘层最大温差)随线芯载流变化情况,以及终端绝缘限制最大温差和终端最外层绝缘温度变化对其载流量的影响。研究结果表明:采取该方法进行载流量计算是必要且可行的。
[Abstract]:There is a close relationship between the terminal carrier current of HVDC cable and its steady state temperature distribution. In order to study the accurate calculation of the carrier current, a method of determining the terminal carrier flow of HVDC cable based on iterative method and ANSYS simulation software is proposed.The maximum allowable temperature of wire core and XLPE insulation layer and the radial maximum allowable temperature difference of silicone rubber insulation layer are taken as limiting current condition.The variation of carrier flux (the maximum allowable temperature of the core and the maximum temperature difference of the XLPE insulation layer) with the carrier current of the core is compared and analyzed by comparison between the non-iterative method and the iterative method.And the effect of terminal insulation limiting maximum temperature difference and terminal outermost insulation temperature change on the carrier current.The results show that the method is necessary and feasible.
【作者单位】：华南理工大学电力学院;南方电网科学研究院有限责任公司;
【基金】：广东省自然科学基金资助项目(2014A030310371) 南方电网公司科技项目(K-KY2014-31)~~
【分类号】：TM751

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