With the large number of inverter-based distributed power sources connected to the distribution network,the operation mode of the distribution network has become flexible,and the design of protection scheme and the action range of protection devices are affected by the topology change.In this context and combined with engineering practice,an adap-tive protection method for active distribution network based on topology change is proposed.First the operation state of the distribution network is perceived by multi-point measurement information,and the change of the topology structure is identified by using the correlation between voltage and current.Then,according to the change of topological structure,a new correlation matrix is established to adaptively adjust the protection scheme and parameters of the system.Finally the effectiveness of the proposed method is verified by simulation.
关键词
拓扑识别/主动配电网/欧氏距离/自适应保护
Key words
topology identification/active distribution network/Euclidean distance/adaptive protection
维普
万方数据