引用本文: | 孙 栩,王明新.交流输电线路大容量固定式直流融冰装置的设计方案[J].电力自动化设备,2010,(12): |
| SUN Xu,WANG Mingxin.Design scheme of large-capacity fixed DC de-icing device for AC transmission lines[J].Electric Power Automation Equipment,2010,(12): |
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摘要: |
设计并研制开发了一套固定式直流融冰装置,其容量较大,可以为500 kV交流输电线路提供直流融冰电流。根据现有的融冰交流线路参数,对该套装置设计研制过程中几个重要的方面,包括主电路设计、基本结构与参数、控制保护设计以及过电压与绝缘配合等做出较为详细的论述。其运行范围很大,导致其基本结构比较复杂,比如需要2个六脉动换流器并联运行,换流变压器采用Y /△接线,为小负荷融冰而配置一台较小容量的三相三绕组(Y /△ /△接线)变压器,且需要配置交流和直流滤波器等。 |
关键词: 直流融冰 大容量 交流输电 500 kV |
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Design scheme of large-capacity fixed DC de-icing device for AC transmission lines |
SUN Xu, WANG Mingxin
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China Electric Power Research Institute,Beijing 100192,China
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Abstract: |
A large-capacity fixed DC de-icing device is designed and developed and it can de-ice for 500 kV AC transmission lines. According to the current parameters of AC transmission lines,some of its important aspects are introduced:main circuit design,basic structure and parameters,control and protection design,overvoltage and insulation coordination. Its wide operating range leads to its complex structure:two parallel operating 6-pulse converters,Y /△ connection commutating transformer,small-capacity three-phase three -winding Y /△/△ connection transformer for low load de-icing,AC and DC filters. |
Key words: DC de-icing large-capacity AC transmission 500 kV |