To solve the problem that distribution-based fault location based on the region location principle may become invalid in the case of multiple faults,this paper proposes a distribution-based fault location and isolation method based on the region current model,which can complete fault location and isolation for a complex distribution network with multiple faults.A region current model is established.The principle of fault handling is discussed at length,and a detailed communication method is designed.Even if switch malfunction and communication failure occur,this approach can still complete fault isolation.Furthermore it is widely applicable,for it is not confined by system operation mode or network structure.%针对基于区域定位原理的分布式故障定位方法在多重故障下可能失效的问题,提出一种基于区域电流模型的分布式故障定位与隔离方法,可对发生多重故障的复杂配电网络进行故障定位及隔离.建立了区域电流模型,详细论述了故障处理原理,设计了详细的通信方法.即使出现开关拒动及通信失效,该方法仍能将故障隔离,并且不受系统运行方式及网络结构的限制,具有广泛适用性.
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