A bus impedance matrix (Zbus) is primarily used for power system analysis. Zbus is typically obtained from prior information on power systems (topology and line impedance) or from the measurement data of phasor measurement units (PMUs). However, the prior power system information may be inaccurate, missing, or inaccessible, and PMUs are difficult to install for all measurements due to the high cost. Therefore, this study proposes an estimation method for Zbus using only non-PMU measurements. The effectiveness and practical implementation of the proposed method were verified by performing hardware-in-the-loop (HIL) experiment and simulations.

中文翻译：

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使用非 PMU 测量进行总线阻抗矩阵估计


总线阻抗矩阵 (Zbus) 主要用于电力系统分析。 Zbus 通常是从电力系统的先前信息（拓扑和线路阻抗）或从相量测量单元 (PMU) 的测量数据获得的。然而，现有的电力系统信息可能不准确、丢失或无法访问，并且由于成本高昂，很难安装 PMU 来进行所有测量。因此，本研究提出了一种仅使用非 PMU 测量的 Zbus 估计方法。通过硬件在环（HIL）实验和仿真验证了该方法的有效性和实际实现。