计及拓扑结构变化的分布式自适应电流保护方法

针对配电网络重构、线路拓扑关系发生变化导致保护误动或拒动的问题，提出一种自适应电流保护方法，该方法由智能终端实时获取配电线路的拓扑关系，自适应调整保护定值，实现自适应保护和故障自愈功能。该方法可减少配置维护工作量，提高配电网的可靠性。为了实现互操作性，建立了基于IEC 61850标准的分布式自适应电流保护相关的逻辑节点，构建了分布式自适应电流保护应用的信息模型，以期能为现场应用提供一定的参考。

Distributed self-adaptive current protection method considering topological changes

Aiming at the misoperation or rejection of protection caused by the reconstruction of distribution network and change of line topological, a self-adaptive current protection method is proposed, which is based on the smart terminal units acquiring the topological relationship of distribution lines in real time and adaptively adjusting the protection settings to achieve adaptive protection and fault self-healing functions. It can reduce the configuration and maintenance workload and improve the reliability of the distribution network. In order to achieve interoperability, the logical nodes related to distributed adaptive current protection based on IEC 61850 standard are established, and the information model of distributed adaptive current protection application is constructed, which is expected to provide some reference for field applications.