Calculation and analysis of basic ice melting current of steel core heating wires
MengyiKong1  YongWang2  RengjieLi  SiteMo3

1 Engineering Cost Major of Jiaxing Nanyang Polytechnic Institute，Jiaxing Zhejiang，314000；

INTI international university，Malaysia，71800；

2 State Grid Jiaxing Power Supply Co., Ltd.，Jiaxing Zhejiang，314000；

Corresponding author: MengyiKong

ABSTRACT: The paper presents a novel ice-melting scheme based on the integration of existing thermal ice-melting techniques and the utilisation of steel-core heating wires. The addition of an insulating layer between the steel core and the aluminium strand enables online ice melting, effectively addressing the adverse effects of traditional thermal ice-melting methods caused by power outages. The paper initially examines the underlying principle and practical viability of ice melting in the context of steel-core heating conductors. The findings indicate that steel-core heating conductors possess significant engineering applications. Subsequently, the mechanism of thermal ice melting of transmission lines and the principles of heat transfer were employed to establish the heat balance equation and the heat conduction differential equation of the ice melting process. This resulted in the mathematical model of the critical ice melting current and the maximum ice melting current of steel-core heating conductors, thereby providing a theoretical basis for the selection of ice melting current of steel-core heating conductors. Subsequently, the precision of the proposed methodology for calculating the critical melting current was validated through simulations and experimentation conducted using the ANSYS software.

Keywords：steel core heating wire; online ice melting; heat transfer principles; critical ice melting current; ANSYS

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