我国智能电网背景下的低频振荡应对研究综述

Survey of response to LFO under the background of China smart grid

为应对我国特高压智能电网的低频振荡问题,综述了该领域的最新研究成果。分析了我国智能电网的特点及其与低频振荡的关系,展示了近年来特征值法、频域法等振荡分析方法及PSS、FACTS等控制技术的机理、工作特点及研究进展,评价了各自对我国智能电网的贡献。提出一种适用于我国智能电网实际的低频振荡在线监控初步构想,并指出了当前需解决的核心问题。

In response to the LFO issue of China＇s UHV smart grid,the latest research results of the field are summarized.Firstly, features of China smart grid （CSG） and its relations with LFO are analyzed.The mechanism,work characteristics and research progress of characteristic value analyzing,frequency-domain analyzing,together with control technologies such as PSS and FACTS, are summarized.Furthermore, the contribution of those methods and technologies to CSG is evaluated.On this basis,a preliminary on-line monitoring idea of low-frequency oscillations in CSG is proposed, and the core issues needed to be solved at present are put forward too.