AI 中文总结
针对现代低惯性电力系统频率偏差问题，提出纳入负荷侧动态的增强负荷模型，改进负荷频率控制模型表示，提高频率响应研究准确性，强调准确建模负荷侧动态对电力系统频率稳定性评估的重要性。
AI 中文摘要
基于逆变器的资源渗透率增加导致系统惯性显著降低，现代低惯性电力系统中频率偏差更快、更明显。在此环境下，电负荷动态行为对塑造系统频率响应愈发重要。本文提出一种增强负荷模型，除传统静态行为外纳入负荷侧动态，增强负荷频率控制（LFC）模型表示。改进公式提高了电力系统频率响应研究的准确性。对比表明仅依靠静态负荷建模会导致结果不准确和结论有误导性。因此，准确建模负荷侧动态对现代电力系统可靠频率稳定性评估至关重要。
英文摘要
The increasing penetration of inverter-based resources has led to a significant reduction in system inertia, resulting in faster and more pronounced frequency deviations in modern low-inertia power systems. In such environments, the dynamic behavior of electrical loads becomes increasingly important in shaping overall system frequency response. This paper presents an enhanced load model that incorporates load-side dynamics in addition to conventional static behavior, thereby augmenting the representation of load-frequency control (LFC) models. This improved formulation increases the accuracy of frequency response studies in power systems. A comparison between the proposed augmented model and the conventional LFC representation demonstrates that relying solely on static load modeling can lead to inaccurate results and potentially misleading conclusions. Therefore, accurate modeling of load-side dynamics is essential for reliable frequency stability assessment in modern power systems.
CommentsAccepted to be presented in RTSI conference
