12脉动桥直流融冰装置的最优接地方式  

The Best Grounding Way of DC De-icing Device with 12 Pulse-bridges

作　　者：万华[1] 吴传奇[1] 傅闯 董曼玲[1] 何俊佳[1] 

机构地区：[1]华中科技大学电气与电子工程学院,武汉430074 [2]南方电网科学研究院,广州510080

出　　处：《南方电网技术》2012年第2期94-98,共5页Southern Power System Technology

摘　　要：12脉动桥直流融冰装置接入系统后,其接地方式直接影响系统的稳态运行特点及融冰装置绝缘水平的选择。针对中性点接地、不接地和线路末端接地这三种可能的接地方式,以桂林变电站12脉动桥直流融冰装置为研究对象,分析该融冰装置在不同接地方式下系统的稳态运行特性,并对过电压及绝缘配合进行仿真计算,确定中性点接地为该融冰装置最优的接地方式。After a 12 pulse-bridges DC de-icing device is connected to the power system,its grounding way may influence the steady-state operation characteristics of the system and the selection of the device insulation level.Considering the possible grounding ways,namely to ground it at its neutral point,not to ground it and to ground it at the end of the de-icing line,and taking the 12 pulse-bridges DC de-icing device at Guilin substation as an object,this paper analyzes the steady-state operation characteristics of the system connected with the de-icing device in different grounding ways and does simulation calculation on the coordination of over-voltage and insulation,concluding that the best grounding way is to ground the device at its neutral point.

关 键 词：直流融冰装置 接地 绝缘配合 

分 类 号：TM864[电气工程—高电压与绝缘技术]