云广±800kV直流输电线路雷电过电压的研究  

Study on Lightning Over Voltage of Yun-Guang ±800 kV UHVDC Transmission Lines

作　　者：梁爱武[1] 朱文卫[2] 顾承昱[3] 

机构地区：[1]广东电网公司系统研究中心,广州510600 [2]广东省电力设计研究院,广州510663 [3]华东电力试验研究院有限公司,上海200437

出　　处：《电力与能源》2011年第1期48-51,共4页Power & Energy

摘　　要：云广±800 kV直流输电线路途径地区山脉起伏、地形复杂、雷电活动频繁,线路防雷面临严峻的考验。结合云广线路的工程实际,采用"ATP-EMTP"数值模拟软件,对该线路的反击和绕击耐雷水平进行研究,并根据《过电压保护规程》和修正的电几何法计算反击和绕击的闪络率,为线路运行和以后工程设计提供参考。Yun-Guang ±800kV UHVDC transmission lines go through the areas where there are many mountains and lightning strikes, so it is a severe task to protect the transmission lines from lightning flashover. Based on the ATP/EMTP software, this paper studies on the lightning withstand performances of back striking and shielding failure for ±800 kV UHVDC transmission lines. Then flashover performances of back striking and shielding failure are calculated according to the ＂Over Voltage Protecting Principles＂ and the modified electro-geometric model. The conclusion of this paper is expected to contribute to projects practice.

关 键 词：±800 kV直流输电 ATP—EMTP 多波阻抗模型 先导模型 反击 绕击 

分 类 号：TM86[电气工程—高电压与绝缘技术]