摘要
计算了深圳鹏城-新田双回220kV输电线路中3段220/110kV同杆并架四回线路的雷电绕击跳闸率和雷电反击跳闸率,分析了减小避雷线保护角、采用不平衡绝缘和安装线路型避雷器等措施对雷电反击跳闸率的影响。提出了减小避雷线保护角至0°、降低杆塔冲击接地电阻至10Ω、在一回110kV线路上增强绝缘、在另一回110kV线路上安装绝缘子并联间隙以及在高土壤电阻率地区或雷电易击处的一回110kV线路上装设线路避雷器等降低雷电反击跳闸率的措施。
The shielding failure tripout rate and back-flashover tripout rate on three 220/110kV segments of quadruple circuit lines on the same tower in 220kV double circuit transmission line from Pengcheng to Xintian in Shenzhen district are calculated. The influences of measures such as reducing shielding angle, adopting unbalanced insulation mode and installing line arresters on back-flashover tripout rate are analyzed. Some measures to decrease back-flashover tripout rate, such as reducing shielding angle to 0°, ...
出处
《电网技术》
EI
CSCD
北大核心
2005年第21期31-34,共4页
Power System Technology
关键词
同杆四回线路
耐雷性能
绕击跳闸率
反击跳闸率
高电压绝缘技术
电力系统
Quadruple circuit transmission line
Lightning performance
Shielding failure tripout rate
Back flashover tripout rate: High voltage insulation engineering
Power system
