高压输电线路电热融冰技术  

Electric Ice-Melting Technology of High Voltage Transmission Lines

作　　者：吕锡锋[1] 何青[1] 

机构地区：[1]华北电力大学电站设备状态监测与控制教育部重点实验室,北京102206

出　　处：《中国电力》2014年第1期17-22,共6页Electric Power

基　　金：中央高校基本科研业务费专项资金资助项目(11QX49)~~

摘　　要：高压输电线路冰灾严重威胁电网的安全运行,覆冰线路的电热融冰是复杂的多物理场非线性过程,从理论上揭示覆冰导线的融冰机理,分析多种计算条件下LGJ-70/10和LGJ-400/65型导线雨凇覆冰的融冰时间,提出电热融冰技术领域中关系到融冰效率、线路安全以及节能所需考虑的最短融冰时间的重要参数,总结了覆冰厚度、覆冰温度、导线温度、环境温度以及对流载荷对最短融冰时间的影响,为高压输电线路的融冰技术应用和发展提供可靠的分析依据。High voltage transmission line icing has a serious threat to the safe operation of power grids,electric ice melting is a complex multi-physics nonlinear process.This paper reveals the mechanism of ice melting in theory by full method,analyzes the ice melting time of LGJ-70/10 and LGJ-400/65 type wires under different boundary conditions,and proposes the important parameters of ice melting in shortest time which is related to the ice melting efficiency,the security of transmission lines and energy saving needed to consider in the field of electric melting technology,summarizes the influence of the ice thickness,ice temperature,the conductor temperature,environment temperature,and convection load on the shortest ice melting time,which will provide a reliable theoretic basis for ice melting technology of high voltage transmission lines.

关 键 词：高压 输电线 完全法 电热融冰 融冰时间 

分 类 号：TM752.5[电气工程—电力系统及自动化]