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中文摘要：
电网拓扑分析是许多电力系统分析软件的基础。目前对于电网拓扑分析，方法众多，但大都是基于SCADA／EMS系统提供的开关信息量来进行，难以满足电力系统分析软件对实时性的要求。以树搜索法中的广度优先搜索为例，在进行初始网络拓扑分析的基础上，提出一种基于广域测量信息的网络拓扑分析方法，并用于非故障情况下及故障后的实时网络拓扑追踪。最后利用Matlab编制相关程序，并对BPA得到的IEEE9节点系统仿真数据进行分析处理。结果表明：该方法在非故障情况及各种故障形式下，利用相量测量单元提供的不同信息进行分析运算，均具有良好的通用性和实时性，可满足电力系统对电网实时拓扑分析的要求。
英文摘要：
Topological analysis of power network is the foundation of power system analysis software. At present there are a lot of methods for power system topological analysis, however in view of that most of them perform topological analysis according to the switching information provided by SCADA/EMS, so they can hardly meet the power system analysis software＇s requirement in real-time performance. Taking the breadth-first search in tree search method for example, on the basis of topological analysis of initial network an improved network topology search method based on the information from wide area measurement system （WAMS） is proposed to trace the network topology under non-fault and post-fault conditions of power network in real-time mode. The proposed method is programmed by Matlab software, and this program is used to analyze and process simulation results of IEEE 9-bus system obtained from BPA power system simulation software. The proposed method analyze and process different power system information provided by phasor measurement units （PMUs） under non-fault conditions and various fault modes, and the results show that the proposed method possesses satisfied versatility and real-time performance, so it can meet the requirement of power system in the field of real-time topological analysis.
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