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华中科技大学电气与电子工程学院,湖北省武汉市 430074
何维(1989—),男,博士,副教授,主要研究方向:电力电子化电力系统安全稳定分析及其控制。E-mail:hewei5590@hust.edu.cn
袁小明(1966—),男,通信作者,博士,教授,博士生导师,主要研究方向:可再生能源发电设备及其控制、直流输电系统及其控制、电力电子化电力系统安全稳定分析及其控制。E-mail:yuanxm@hust.edu.cn
景浩文(1999—),女,博士研究生,主要研究方向:电力电子化电力系统动态过程分析。E-mail:D202380817@hust.edu.cn
收稿:2024-06-07,
修回:2025-01-26,
网络出版:2025-03-13,
纸质出版:2025-04-25
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何维,袁小明,景浩文等.基于有功/无功不平衡激励-内电势幅频响应的设备统一模型[J].电力系统自动化,2025,49(8):2-11.
HE Wei,YUAN Xiaoming,JING Haowen,et al.Unified Device Model of Active/Reactive Imbalance Excitation-Internal Electric Potential Amplitude/Frequency Response[J].Automation of Electric Power Systems,2025,49(8):2-11.
何维,袁小明,景浩文等.基于有功/无功不平衡激励-内电势幅频响应的设备统一模型[J].电力系统自动化,2025,49(8):2-11. DOI: 10.7500/AEPS20240607009.
HE Wei,YUAN Xiaoming,JING Haowen,et al.Unified Device Model of Active/Reactive Imbalance Excitation-Internal Electric Potential Amplitude/Frequency Response[J].Automation of Electric Power Systems,2025,49(8):2-11. DOI: 10.7500/AEPS20240607009.
新能源发电、直流输电等电力电子设备的大量接入对电力系统的动态行为产生了影响,频繁出现的各类形态复杂的动态稳定问题对系统动态过程分析提出了更高要求。然而,由于当前缺乏反映系统动态的多样化设备统一模型,导致大系统动态过程难以分析,动态失稳的机理仍无法揭示。首先,基于对交流电力系统运行原理与设备功能的一般化认知,提出了基于有功/无功功率不平衡激励-内电势幅值/频率响应第一性原理的设备统一模型架构。然后,通过对同步发电机、异步电动机以及锁相并网变换器这3类典型设备的运行原理进行剖析,阐释了不同设备由不平衡有功/无功功率驱动形成内电势幅值/频率的内秉工作原理,并给出了这三类设备的统一模型示例。最后,通过对示例系统进行仿真,阐释了设备基于有功/无功功率不平衡调节其内电势幅值/频率变化而引起系统动态的本质,说明了所提模型认识系统动态过程的有效性和必然性。
The large-scale integration of power electronic devices such as renewable energy power generation and DC transmission
has influenced the dynamic behavior of the power system. The frequent dynamic stability problems of various complex forms pose higher requirements for the analysis of the dynamic process of the system. However
due to the current lack of a unified model of diverse devices that can reflect the system dynamics
it is difficult to analyze the dynamic process of large-scale systems
and the mechanism of dynamic instability still cannot be revealed. Firstly
based on the generalized understanding of the operation principles of the AC power system and the functions of devices
a framework of unified device model based on the first principles of active/reactive power imbalance excitation-internal electric potential amplitude/frequency response is proposed. Then
by analyzing the operation principles of three typical types of devices
namely the synchronous generator
the asynchronous motor
and the grid-connected converter based on the phase-locked loop
the inherent working principles of different devices in forming the internal voltage amplitude/frequency driven by active/reactive power are explained
and the cases of the unified models of these three types of devices are given. Finally
through the simulation of the case system
the essence that the devices adjust the changes of their internal voltage amplitude/frequency based on the active/reactive power imbalance
thereby causing the system dynamics
is elaborated. It illustrates the effectiveness and necessity of the proposed model in understanding the dynamic process of the system.
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