Study and experiment of mobile DC de-icer for overhead ground wire

2012 3rd International Conference on System Science, Engineering Design and Manufacturing Informatization Pub Date : 2012-11-12 DOI:10.1109/ICSSEM.2012.6340743

Jiazheng Lu, Chun Zhao, Bo Li, Zhen Fang, Hongxiang Zhang, Xiaochun Li

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引用次数: 4

Abstract

Serious icing disasters threaten the safe running of power system. Overhead ground wires are difficult to de-ice with common heat de-icing methods in some special areas. A mobile DC de-icer for the overhead ground wire is developed in this paper to realize flexible de-icing. A diesel generator provides the 50 Hz three-phase power supply. A rectifier transformer is used to step up the voltage and a rectifier is used to convert AC to DC. The 12-pulse rectification mode is adopted to reduce the current harmonics of the rectifier and to decrease the ripple of the DC output. Onsite experiment of the mobile DC de-icer for the overhead ground wire is performed on a GJ-70 typed overhead ground wire with the length of 4847 meters. A temperature rise of 7.0°C is achieved in 36 minutes under the DC de-icing voltage of 2700 V and current of 100 A. The result shows that the mobile DC de-icer for overhead ground wire can operate reliably and can meet the demand of flexible de-icing.

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移动式架空地线直流除冰器的研究与试验

严重的结冰灾害威胁着电力系统的安全运行。在一些特殊区域，采用普通的热除冰方法对架空地线进行除冰比较困难。为实现柔性除冰，本文研制了一种移动式架空地线直流除冰器。柴油发电机提供50hz三相电源。整流变压器用来提高电压，整流器用来把交流转换成直流。采用12脉冲整流方式，降低整流器电流谐波，减小直流输出纹波。移动式直流除冰器对架空地线的现场实验采用GJ-70型架空地线，长度4847米。在直流除冰电压为2700v、电流为100a的条件下，36分钟可实现7.0℃的温升。结果表明，移动式架空地线直流除冰器运行可靠，能够满足柔性除冰的要求。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2012 3rd International Conference on System Science, Engineering Design and Manufacturing Informatization

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