220/110kV混压同塔四回输电线路耐雷性能研究  

Research on lightning performance of quadruple-circuit transmission line with dual voltage 220/110 kV on the same tower

作　　者：傅玉洁 赵斌财[2] 张晓[2] 万亦如[3] 王东举[3] 

机构地区：[1]上海艾能电力工程有限公司,上海200023 [2]潍坊供电公司,山东潍坊261021 [3]浙江大学电气工程学院,浙江杭州310027

出　　处：《能源工程》2011年第6期24-28,共5页Energy Engineering

摘　　要：为评估220/110 kV混压同塔四回输电线路的耐雷性能,采用改进电气几何模型(EGM)与电磁暂态程序(EMTP/ATP)计算了其绕、反击跳闸率,并分析了地面倾角、地线保护角、杆塔呼称高度、接地电阻、架设耦合地线等因素的影响。计算结果表明,混压同塔四回路220 kV线路绕击相对严重,110 kV线路反击相对严重。最后,提出了改善线路雷电性能的措施,建议在实际工程中防绕击采用负保护角(<-5°)和安装侧向避雷针,防反击采用降低杆塔接地电阻(≤5Ω)和架设耦合地线。The lightning performance of quadruple-circuit transmission line with dual voltage 220/110 kV on the same tower was analyzed with the improved EGM （electro-geometrical model） and EMTP （elector-magnetic transient program）. And the effects of fielding angle, nominal height of the tower, ground elevation, grounding resistance and additional shield wire were discussed in detail. The results showed that the priority was different for improving lightning performance-shielding. Failure on 220 kV transmission lines was relatively serious; back flashover on 110 kV transmission lines was relatively serious. Finally, several special methods that may be used to improve lightning performance were presented, such as Using negative fielding angle（ 〈 -5°） , installing lateral rod, reducing grounding resistance to 5 Ω, and setting up additional shield wire.

关 键 词：220/110 KV 同塔四回 耐雷性能 电气几何模型 电磁暂态程序 

分 类 号：TM712[电气工程—电力系统及自动化]