基于ATP仿真的变电站雷害事故改造研究  

Lightning Protection Transformation in Substation Based on ATP Simulation

作　　者：陈颖之[1] 

机构地区：[1]长沙理工大学,长沙410114

出　　处：《电力与能源》2017年第3期278-282,共5页Power & Energy

摘　　要：介绍了某煤炭企业35kV变电站雷击事故情况并系统分析雷害事故原因。根据雷击现场具体现象和变电站规格参数,对产生雷击的原因逐一进行数值计算分析,确定了是雷电侵入波所致,并提出了在变电站进线段架设避雷线作为保护装置、减小避雷器与变压器之间的电气距离等改造措施。通过电力系统电磁暂态仿真软件ATP-EMTP对变电站进线段架设避雷线前后雷电侵入波对变压器造成的最大冲击电压进行仿真,以验证改造措施的可行性。This paper introduces the lightning accident in a 35 kV substation of a coal company and analyzes the causes of the accident.According to the specific situation and substation specification parameters on the scene of the lightning accident,numerical analysis was carried out on the causes of lightning strike one by one,and it was determined that the accident was caused by lightning invasion wave.It also proposes some transformation measures,such as installing lightning shield line as protective device in the substation input line segment,and reducing the electric distance between the lightning arrester and transformer.ATP-EMTP was used to simulate the maximum impact of lightning invasion wave voltages on transformer before and after the installation of lightning shield line,thus verifying the feasibility of the transformation measures.

关 键 词：35KV变电站 雷电侵入波 电力系统电磁暂态仿真 防雷改造 

分 类 号：TM862[电气工程—高电压与绝缘技术]