不受网络拓扑约束的就地型馈线自动化故障处理方案研究

传统就地型馈线自动化整定参数受网络拓扑结构的约束较大,当电网结构发生变化时,原整定参数需要随之进行修正,增加了操作的复杂性。为此,通过分段开关和联络开关分别对供电区域和负荷点序号进行逻辑编号,探究各个逻辑序号下各开关运行参数的整定原则,提出了一种不受网络拓扑约束的就地型馈线自动化故障处理方案。通过对发生故障后分段开关和联络开关的动作特性进行分析,提出了拓扑改变后的故障处理流程。案例分析结果表明,本文所提方案具有自适应性,能够适应变化的网络拓扑结构,完成对故障区段的隔离并恢复非故障区域的供电。

Research on Fault Handling Scheme of Local Feeder Automation without Network Topology Constraints

The traditional local feeder automatic setting parameters are greatly constrained by the network topology. When the grid structure changes,the original setting parameters need be modified accordingly,which increases the complexity of operation. For this reason,the section switch and the contact switch were used to number the power supply area and the load point number respectively,and the setting principle of each switch operation parameter under each logic number was explored. A local feeder automatic fault handling scheme was proposed,which was not constrained by the network topology. Based on the analysis of the action characteristics of the sectionalized switch and the interconnection switch after the fault,the fault processing flow after the topology change was proposed. The results of case study show that the scheme proposed is adaptive,can adapt to the changing network topology,and can complete the fault isolation and non fault area restoration of power supply.