TY - JOUR
TI - Thermodynamic model of critical ice-melting current on iced transmission lines
AU - Zhu Yong-Can
AU - Huang Xin-Bo
AU - Zhao Long
AU - Tian Yi
AU - Mu Jing-Yu
AU - Gao Hua
JN - Thermal Science
PY - 2019
VL - 23
IS - 5
SP - 3187
EP - 3198
PT - Article
AB - The thermal de-icing by Joule effect is a mostly valid way to prevent transmission-lines from the severe ice storm. A model was put forward to simulate the critical ice-melting current on iced conductor. Based on this model, the value of critical ice-melting current was calculated with various parameters, some of which were ignored in the earlier literatures, such as ice-layer heat conductivity, wind attack angle, and icing section shape. The results of the experiment and simulation show that the critical ice-melting current increase with wind speed, wind attack angle, and ice-layer heat conductivity, but decrease rapidly with ambient temperature and liquid water content. Moreover, the maximum difference between the results of simulation and experiment is about 9%, thus this model can be employed to estimate the engineering parameters in practical thermal de-icing projects.