钢芯铝绝缘导线融冰传热数值分析

为消除电网覆冰灾害，对一种嵌入绝缘层的钢芯铝绞线结构进行了融冰研究，简要介绍了其在不断电情况下，利用线路运行电流实现在线融冰技术的原理。针对该导线结构，文章从传热学角度对其融冰物理过程进行了分析，建立了无重力条件下该导线融冰时的简易数学模型，推导了该导线达到融冰稳态时，导线各部分温度分布解析式，设计定制了嵌入绝缘层的钢芯铝绞线来进行融冰实验，实验结果验证了该导线融冰的有效性和可行性。

Numerical analysis of heat transfer of ice-melted steel core aluminum insulated wire

In order to eliminate the ice coating disaster of the power grid, a steel core aluminum insulated composite ice melting wire structure embedded in an insulating layer is studied, and the principle of using the line operating current to realize online ice melting technology under continuous power is briefly introduced. Aiming at the structure of the wire, the article analyzes the physical process of ice melting from the perspective of heat transfer, establishes a simple mathematical model of the wire melting under no gravity, and deduces that when the wire reaches the steady state of ice melting, Partial temperature distribution analytical formula. Finally, the steel core aluminum stranded wire embedded in the insulation layer was custom designed to conduct the ice melting experiment. The experimental results verified the effectiveness and feasibility of the wire melting ice.