220 kV变电站雷电侵入波仿真研究
Simulation Research of 220kV Substation Lightning Intruding Waves
陈解祥1
作者信息
- 1. 国网湖南怀化供电公司,湖南怀化418000
- 折叠
摘要
220 kV线路雷电侵入波常造成变电设备损坏.运用ATP-EMTP仿真软件,对220 kV变电站雷电侵入过电压进行了仿真分析.仿真结果表明,因运行方式不当,母线设备失去避雷器保护,或避雷器保护距离过大时,雷电过电压将危及设备安全;因线路设计不周,近区强雷击时,将使变电设备出现危险的过电压.分析表明末端线路参数、母线运行方式、站内设备布局、以及近区雷击强度严重影响过电压水平.分析指出优化末端线路设计,降低杆塔接地电阻,调整站内设备布局,控制好母线运行方式,以及在进线侧加装氧化锌避雷器,是防控变电站雷电侵入过电压的有效措施.
Abstract
Lightning intruding waves in 220 kV lines often damage the transformer equipment.In this paper,ATPEMTP simulation software is applied for the simulation analysis of 220 kV substation lightning incoming overvoltage.Simulation results show that lightning overvoltage will endanger the equipment safety in the case of improper operation mode,lightning protection loss of the bus device,and the over-distance lightning protection.Due to the defective circuit design,strong lightning in the nearby field may cause dangerous overvoltage.It is analyzed that overvoltage level is seriously affected by the line end parameters,bus operation mode,station equipment layout,and near-field lightning intensity.Supposedly,effective measures can be employed to prevent and control substation lightning incoming overvohage,such as optimizing end circuit design,reducing tower grounding resistance,adjusting the substation equipment layout,controling bus operation mode,as well as installing in the line-side zinc oxide arrester.
关键词
ATP-EMTP/避雷器/雷电侵入波Key words
ATP-EMTP/lightning arrester/lightning intruding surge引用本文复制引用
出版年
2014
NETL
NSTL
万方数据