高比例电力电子电力系统宽频带振荡研究综述

A Survey on Wide-frequency Oscillation for Power Systems With High Penetration of Power Electronics

随着电力电子设备在电力系统中所占比例的日益提高,电力系统的动态特性发生了巨大变化,多样化设备在多时间尺度下的交互作用,使得频率覆盖次同步、超同步、高频带的电力系统宽频带振荡问题逐渐凸显。该文将首先总结高比例电力电子电力系统宽频带振荡的新特征,对谐振类和控制振荡类宽频振荡问题进行说明,然后对电力电子设备、同步发电机及电力网络间交互作用的研究成果进行总结与归纳,对模态分析法、阻抗分析法等电力系统宽频带振荡分析方法的基本原理和适用性进行说明,最后提出高比例电力电子电力系统宽频带振荡领域未来的研究方向。

With the increasing proportion of power electronic equipment in the power system,the dynamic characteristics of power system have changed significantly.The dynamic interaction between diversified equipment in multiple timescales causes the problem of power system wide-frequency oscillation,which covers sub-synchronous,ultra-synchronous and high frequency band,gradually become prominent.In this paper,new oscillation characteristics of wide-frequency oscillation of power system with high penetration of power electronic equipment were summarized,and the power system wide-band oscillation problems of resonance and controlled oscillation were explained firstly.Then,the research findings about the dynamic interaction between power electronic equipment,synchronous generator and power network were comprehensively summarized,and the basic principles and applicability of analysis methods of power system wide-frequency oscillation,such as modal analysis and impedance analysis,are commented.Finally,the future research directions in the field of wide-frequency oscillation of power system with high penetration of power electronic equipment were concluded in this paper.