基于同步测量的电力系统低频振荡分析方法的探究

摘要

电力系统中，存在多种振荡模式，其本质为发电机组间转子角的相对运动，其基于此类测量信息能够很好反映振荡特征。相位测量装置（PMU）能够同步测量网络中关键节点信息，为基于测量数据的振荡特征提取提供技术支持。本文对基于PMU数据测量在电力系统中提取振荡特征的方法进行了相关的介绍，同时提出一些在今后研究中应该重视的问题。%There are a variety of oscillation modes in power system which are predominantly determined by the machine rotor angles,and they provide the best visibility of such modes.The variables of key nodes in the network can be measured by pmus,and we can trace the Oscillation characteristics of electromechanical oscillations by analyzing the real-time variables in the network,In this paper,some methods for extracting the characteristics of low frequency oscillations based on measured signal in power system are described,and several issues are pointed out to solve the practical problems in the future.