论文标题
基于逆变器资源的基于测量的小信号模型的复杂性
Intricacies of formulating measurement-based small signal models of inverter based resources
论文作者
论文摘要
与现代电力系统相关的基于逆变器的资源（IBR）越来越多，需要对稳定性研究的IBR进行准确的建模。基于测量的建模方法可以创建IBR的阻抗/入学模型，随后在小信号稳定性研究中使用。此类基于测量的方法以前已成功用于DC-DC转换器，但针对三相IBR提出了独特的挑战。本文讨论了可能通过使用说明性示例从基于测量的方法以及缓解不良影响的缓解机制中导致错误模型的选择和挑战。还提供了有关涉及此类入学模型的小信号稳定性评估的讨论。通过说明性示例可以看到注射信号和模型拟合程序，用于测量设备的相位锁定环以及电网阻抗可能会影响IBR基于测量的授予模型的准确性。
The increasing number of inverter based resources (IBRs) connected to modern power systems necessitate accurate modeling of IBRs in stability studies. Measurement-based modeling approaches can create an impedance/admittance model of IBRs to be subsequently used in small signal stability studies. Such measurement-based approaches have previously been successfully used for dc-dc converters but present unique challenges for three-phase IBRs. This paper discusses the choices and challenges that can lead to an incorrect model from measurement-based approaches as well as mitigation mechanisms of the adverse impacts using an illustrative example. A discussion of small signal stability assessment involving such admittance models is also provided. It is seen through the illustrative example shown that the injection signal and the model fitting procedure, the phase locked loop used for the measurement device, and the grid impedance may impact the accuracy of the measurement-based admittance model of the IBRs.
