控制理论(社会学)
操作点
李雅普诺夫函数
电力系统
理论(学习稳定性)
惯性
计算机科学
功率(物理)
Lyapunov稳定性
信号(编程语言)
控制系统
控制工程
工程类
电子工程
控制(管理)
物理
电气工程
经典力学
机器学习
人工智能
非线性系统
量子力学
程序设计语言
作者
Yiran Jing,Hongchang Qi,Weilin Hou,Tiezhu Wang,Nan Feng,Yuyao Feng
标识
DOI:10.1109/pandafpe57779.2023.10141214
摘要
Due to the access of a large amount of renewable energy, the stability feature of the power system has changed dramatically. Especially the introduction of power electronic devices, weakening the system inertia and bringing new stability problems such as power oscillation, voltage and frequency stability risks. VSG control is a good way to improve the system's dynamic response as a kind of power electronic. Since the VSG's operation is mimic the dynamic process of a synchronous generator, it increases the inertia by reducing parts of the electronics' flexibility. However, the control interaction of the VSG control loop is complex and sensitive, and different operating conditions appreciable impact on the system stability. This paper pointed out that by using the Lyapunov second method, the stability degree of the power system operating point can be expressed intuitively. By calculating the energy function, the stability of different stable operating points of a system can be quantified. Through the visualized expression of the system operating point's stability, we can directly compare the stability degree with different operating points and provide a regulation reference for the selection of operating points. Study cases are also given out in this paper.
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