鲁固特高压直流黄河大跨越导线与地线选择

Selection of Conductor and Ground Wire of Lugu UHVDC Crossing the Yellow River

鲁固特高压直流,是继±660 kV银东线、±800 kV昭沂直流后的第3条外电入鲁直流输电通道,在山东境内跨越黄河,主跨越档距超过1 300 m,最高铁塔高度接近140 m,设计阶段需按照大跨越设计。结合工程实际,重点介绍黄河大跨越的导线与地线选择,包括选择原则、导线材质的确定、载流量计算、电气特性、机械特性、经济特性的计算,给出了导、地线的选型意见,可为后续工程的黄河大跨越提供设计参考。

Lugu UHVDC,as the third DC transmission channel after±660 kV Yindong and±800 kV Zhaoyi UHVDC transmission lines for importing external power to Shandong,should be built cross the Yellow River.The design of the crossing has a main span was over 1 300 meters with the highest tower over 140 meters tall.The project was designed to comply with large-crossing standard.Based on the engineering practice,the selection of conductor and grounding wire was introduced,including selection principle,determination of conductor material,calculation of capacity,electrical characteristics,mechanical characteristics and economic characteristics.Suggestions on selection of conductor and grounding wire are given,which can provide design reference for the follow-up project of the large-span crossing.