论文标题
基于阻抗的根本原因分析：阻抗模型的比较研究和特征值灵敏度的计算
Impedance-based Root-cause Analysis: Comparative Study of Impedance Models and Calculation of Eigenvalue Sensitivity
论文作者
论文摘要
当尚未提供基于逆变器的资源（IBR）等状态空间模型时，电力系统的阻抗模型很有用，而仅可用黑盒阻抗模型。为了追踪系统的阻尼和调谐模式不良的根本原因，需要对组件和参数的敏感性。所谓的基于节点入学模型的所谓关键入学 - 元素值灵敏度提供了部分解决方案，但省略了有意义的方向信息。替代性的全系统阻抗模型产生了与分流器连接的设备的参与因子，并具有方向信息，可以单独调整阻尼和频率，但不涵盖串联连接的组件。本文形式化了两种形式的阻抗模型之间的关系以及两种形式的根本原因分析之间的关系。在阻抗模型中进一步开发了系统特征值敏感性的计算，这填补了先前研究的空白，并建立了基于阻抗的根本原因分析的完整理论。已经用三节点被动网络，修改后的IEEE 14-BUS网络和修改后的Nets-NYPS 68-BUS网络来说明了理论关系和参数的调整，这表明可以开发工具，用于调整IBR富含Black-Box障碍模型的富含IBR的电力系统。
Impedance models of power systems are useful when state-space models of apparatus such as inverter-based resources (IBRs) have not been made available and instead only black-box impedance models are available. For tracing the root causes of poor damping and tuning modes of the system, the sensitivity of the modes to components and parameters are needed. The so-called critical admittance-eigenvalue sensitivity based on nodal admittance model has provided a partial solution but omits meaningful directional information. The alternative whole-system impedance model yields participation factors of shunt-connected apparatus with directional information that allows separate tuning for damping and frequency, yet do not cover series-connected components. This paper formalises the relationships between the two forms of impedance models and between the two forms of root-cause analysis. The calculation of system eigenvalue sensitivity in impedance models is further developed, which fills the gaps of previous research and establishes a complete theory of impedance-based root-cause analysis. The theoretical relationships and the tuning of parameters have been illustrated with a three-node passive network, a modified IEEE 14-bus network and a modified NETS-NYPS 68-bus network, showing that tools can be developed for tuning of IBR-rich power systems where only black-box impedance models are available.
