Finite element analysis of DC ice-melting thermal characteristics and deicing dynamic response in a 3-phase conductor interphase interval system
ZHU He1, LIAO Hanliang1, ZHANG Renqi2, LIU Cheng1
1. School of Civil Engineering and Architecture, Northeast Electric Power University, Jilin 132000, China; 2. Electric Power Science Research Institute, Guizhou Power Grid Co., Ltd., Guiyang 550000, China)
Abstract：For the study of transmission line conductor dc asymmetric operation characteristic of melting ice, with transmission conductor LGJ - 400/50 as the research object, and establish a transmission wire entity model under different operating conditions, using COMSOL software to explore the influence of different ice thickness on the conductor temperature distribution, and the different environment temperature and different wind speed on the center conductor temperature change is analyzed, The wire temperature at the deicing time was applied as the initial condition, and ANSYS LS-DYNA PrepPost nonlinear structural dynamics model was used to establish the finite element model of three-phase wire-phase interval wire system in the actual operation process, and analyze the dynamic response of asymmetric deicing in DC melting of the wire system. The results show that the maximum deicing jump height of the wire system varies with the number of deicing phases under the conditions of different deicing schemes. The deicing situation of the three-phase wier-phase interval wire system is asymmetric compared with that of the single wire in the process of deicing. According to the influence rule of spacer rod arrangement on the dynamic response of the wire system, The phase spacing of conductor can be optimized to ensure the safe operation of DC melting process.
祝贺1，廖汉梁1，张仁奇2，刘城1. 三相导线-相间间隔体系直流融冰热特性有限元及脱冰动力响应分析[J]. 振动与冲击, 2024, 43(1): 138-144.
ZHU He1, LIAO Hanliang1, ZHANG Renqi2, LIU Cheng1. Finite element analysis of DC ice-melting thermal characteristics and deicing dynamic response in a 3-phase conductor interphase interval system. JOURNAL OF VIBRATION AND SHOCK, 2024, 43(1): 138-144.
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