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首页> 外文期刊>IEEE transactions on industrial informatics >Robust Faulted Line Identification in Power Distribution Networks via Hybrid State Estimator
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Robust Faulted Line Identification in Power Distribution Networks via Hybrid State Estimator

机译：通过混合状态估计器的配电网鲁棒故障线路识别

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摘要

Distribution networks with high penetration of distributed generation yield complicated and uncertain power flow, which makes most existing faulted line identification methods not adaptable for industrial applications. Driven by this motivation, a novel single-phase-to-ground (SPTG) faulted line identification method is proposed based on hybrid state estimator (HSE). The first step of the method is to present an HSE for power distribution networks using power flow measurements mixed phasor measurement units. Then, an SPTG fault on a power line is treated as an event that suddenly increases one virtual bus in the monitored network, so as to form the extended bus admittance matrix and augmented HSE based on the specific network topology. In this way, the faulted line identification could be obtained by computing parallel estimated results transversally. Robustness and effectiveness of the proposed HSE and the HSE-based SPTG faulted line identification method are validated by means of a cyber-physical system (a cosimulation platform), where two typical three-phase power distribution networks are considered to simulate with its hybrid measurement system.
机译：具有较高分布式发电渗透率的配电网络产生了复杂且不确定的潮流，这使得大多数现有的故障线路识别方法不适合工业应用。在这种动机的驱动下，提出了一种基于混合状态估计器的单相接地故障线识别方法。该方法的第一步是为使用功率流测量混合相量测量单元的配电网络提供HSE。然后，将电力线上的SPTG故障视为一个事件，该事件突然增加了受监控网络中的一条虚拟总线，从而根据特定的网络拓扑形成扩展的总线导纳矩阵和增强的HSE。这样，可以通过横向计算并行估计结果来获得故障线路识别。通过网络物理系统（协同仿真平台）验证了所提出的HSE和基于HSE的SPTG故障线路识别方法的鲁棒性和有效性，在该系统中，考虑了两个典型的三相配电网以其混合测量进行仿真系统。

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