【摘要】 新型电力系统中高比例新能源和电力电子设备的接入会引发宽频振荡问题。然而，目前对于宽频振荡的研究大多停留在理论研究和实验验证，尚缺面向实际工程系统宽频振荡分析的实用方法与工具。为解决该问题，首先，提出了基于闭环传递函数频率特性的宽频振荡稳定判据，并基于电力系统分析计算软件——动态仿真程序（dynamic simulation program,DSP）研发了电力系统宽频振荡分析模块，形成一套适用工程设计、系统评估的工具软件；其次，介绍了基于宽频阻抗网络的闭环传递函数矩阵构建方法；接着，提出了宽频振荡稳定判据；然后，基于所提理论设计了振荡分析软件架构并实现了软件编写；最后，将振荡分析软件应用到实际系统中。通过多种运行工况下与时域仿真的对比，结果表明，现有判据可能存在误判的情况，而所用判据能够准确分析稳定结果和振荡频率，验证了振荡分析软件在准确性和适用范围上的优势。更多还原

【Abstract】 The integration of high-penetration renewable energy and power electronic devices in new power systems can trigger wideband oscillation issues. However, current research on wideband oscillations predominantly remains at the theoretical and experimental validation stages, lacking practical methods and tools for analyzing wideband oscillations in real-world engineering systems. To address this challenge, firstly, this paper proposes a wideband oscillation stability criterion based on the frequency characteristics of closed-loop transfer functions. Furthermore, a wideband oscillation analysis module for power systems is developed using the power system analysis software—dynamic simulation program(DSP), forming a comprehensive tool set suitable for engineering design and system evaluation. Then, the construction method of the closed-loop transfer function matrix based on wideband impedance networks is introduced. Subsequently, the wideband oscillation stability criterion is proposed. The oscillation analysis software architecture is designed and implemented based on the proposed theory. Finally, the developed oscillation analysis software is applied to an actual system. Comparative studies with time-domain simulation results under various operating conditions reveal that existing criteria may yield misjudgments, whereas the proposed criterion accurately determines stability outcomes and oscillation frequencies, demonstrating the superior accuracy and broader applicability of the developed oscillation analysis software.更多还原