中国电力 ›› 2014, Vol. 47 ›› Issue (1): 17-22.DOI: 10.11930/j.issn.1004-9649.2014.1.17.5

• 电网 • 上一篇    下一篇

高压输电线路电热融冰技术

吕锡锋, 何青   

  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
  • 收稿日期:2013-10-25 出版日期:2014-01-31 发布日期:2015-12-18
  • 作者简介:吕锡锋(1981-),男,山东莱西人,博士研究生,从事高压线路动力特性研究。E-mail: lvximin@163.com
  • 基金资助:
    中央高校基本科研业务费专项资金资助项目(11QX49)

Electric Ice-Melting Technology of High Voltage Transmission Lines

LV Xi-feng, HE Qing   

  1. Key Laboratory of Condition Monitoring and Control for Power Plant Equipment of Ministry of Education, North China Electric Power University, Beijing 102206, China
  • Received:2013-10-25 Online:2014-01-31 Published:2015-12-18
  • Supported by:
    This work is supported by the Fundamental Research Funds for the Central Universities (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。

关键词: 高压, 输电线, 完全法, 电热融冰, 融冰时间

Abstract: 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.

Key words: high voltage, transmission line, full method, electric ice melting, ice melting time

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