基于开闭塔的110 kV多分支输电线路运行可靠性提升研究

Research on Improving Operation Reliability of 110 kV Multi-branch Transmission Lines Based on Switching Tower

现有110 kV输电线路多为T型连接的多分支线路,运行潜在隐患高,网架结构调整灵活性差,供电可靠性低。结合某供电公司典型T型线路版图分析,提出一种基于开闭塔的110 kV多分支输电线路运行可靠性提升方案,将线路分支关键节点杆塔设计为开闭塔,以实现输电线路拓扑结构的灵活调整,并使用ATP-EMTP软件对线路绝缘配置进行仿真。仿真结果表明现有线路绝缘配置条件满足要求,开闭塔方案具有可行性。该研究成果可为输电线路运行方式调整、运行可靠性提升提供新思路。

Most of the existing 110 kV power transmission lines are multi-branch lines with T-shaped connection,which has disadvantages of high potential hidden dangers in operation,poor flexibility in grid structure adjustment,and low power supply reliability.Based on the layout analysis of a power supply company,a scheme for improving the operation reliability of 110 kV multi-branch transmission lines based on switching tower is proposed.The key node of the line is designed as a switching tower to achieve flexible adjustment of the transmission line topology,and the insulation configuration is simulated by ATP-EMTP.The simulation results show that the existing line insulation configuration conditions meet the requirements,and the switching tower scheme is feasible.The results could provide new ideas for the adjustment of transmission line operation mode and the improvement of operation reliability.