输电线路导线及地线复用新型直流融冰装置技术研究综述

  [目的]  在雨雪冰冻气候环境下，为了避免输电线路冰雪灾害事故的发生，需对输电线路进行融冰以加强其抵御冰雪灾害的能力，直流融冰装置是一种近年来应用广泛且行之有效的融冰装置。  [方法]  通过建立一种可行且有意义的技术来解决采用完全独立的两套融冰设备直流融冰装置设备投资大，占地面积增大，运维等费用成倍增加，整体经济性差的问题。提出一种可行的方法，即介绍了一种导线及地线复用新型直流直流融冰装置的主电路拓扑结构，可以一套装置实现导线和地线复用直流融冰的功能。  [结果]  获得的结果证明了这种技术是可行的和有效的。  [结论]  这项技术为进一步研究解决输电线路导线和地线覆冰、降低直流融冰装置投资、提高输电系统抵御自然灾害的能力具有重要参考意义。

Overview on Technology of New Model DC Ice-melting Device for Phase Wire and Ground Wire of Transmission Line

  [Introduction]  In the freezing rain and snow climate environment, it is necessary to heat the transmission line to strengthen its ability of resisting accident caused by snow and ice disaster. DC ice-melting device has been using widely and effectively current years.  [Method]  This paper aimed to establish a feasible and meaningful technology to solve the problem of DC ice-melting device which adopted two independently sets of ice melting equipment, doubled the O & M cost, had worse economy, and need more investment and floor space. Wherefore, this paper proposed a feasible method which a main circuit topology of new model ice-melting device used for ice-melting and snow on both phase wire and ground wire, then it was introduced in this essay.  [Result]  The results we obtained prove that this technique is feasible and effective.  [Conclusion]  This technology provides great significance for further study on solving the problem of snow and ice overage on phase wire and ground wire, in reducing the investment on DC ice-melting device and in improving the capability of transmission system to resist the natural disaster.