基于馈线自动化功能的配电网故障定位技术

Distributio n Network Fault Locati on Tech no logy Based on Feeder Automation Function

针对当前已有方法的配电网故障定位成功率和容错率较差,定位延时较差的问题。提出一种基于馈线自动化功能的配电网故障定位方法,通过实际馈线终端的自动化功能组建统一的配电网故障定位模型。在分布式电源接入的情况下,通过搜索策略获取不同的开关状态。使用改进蚁群算法求解模型的初始解,建立分布式电源动态投切的开关函数。通过分区原则,对于无源树枝使用检测入口的FTU状态,简化故障定位计算流程,最终完成故障定位。仿真实验结果表明,方法能够有效提升配电网故障定位成功率和容错率,减少定位延时。

Aiming at the problems of poor fault location success rate and fault tolerance rate and poor location delay of current existing methods in distribution network.A distribution network fault location method based on the feeder automation function is proposed,and a unified distribution network fault location model is constructed through the automation function of the actual feeder terminal.In the case of distributed power access,different switch states are obtained through search strategies.The improved ant colony algorithm is used to solve the initial solution of the model,and the switching function of the dynamic switching of distributed power generation is established.Through the principle of zoning,the FTU status of the detection entrance is used for the passive branches to simplify the fault location calculation process,and finally complete the fault location.The simulation experiment results show that the method can effectively improve the success rate and fault tolerance rate of fault location in the distribution network,and reduce the location delay.