基于相关性分析的频率振荡扰动源定位方法研究  

Research on the method of frequency oscillation disturbance source location based on correlation analysis

作　　者：张馨介 唐浩然 Zhangxinjie;Tanghaoran(Yunnan power grid dispatching and control center,Yunnan,Kunming 650011)

机构地区：[1]云南电网有限责任公司电力调度控制中心,昆明650011

出　　处：《云南电力技术》2021年第1期72-75,共4页Yunnan Electric Power

摘　　要：当电力系统发生与调频控制过程强相关的频率振荡时,调度员应快速找到对频率波动起负阻尼作用的机组,并采取措施平息波动。本文对超低频的频率振荡引发原因与特性进行分析,基于振荡过程中系统频率与机组出力的特点提出了一种在线扰动源定位模型,并采用相关性分析方法对负阻尼机组实现定位。通过区域电网中的实测数据,验证了本文提出的扰动源机组定位方法的有效性,为调度员快速定位扰动源提供了一种有效手段。When the frequency oscillation appears in power system with strongly related to the frequency control,the dispatchers should quickly find out the generators which have negative damping effect on frequency oscillation,and take emergency control measures to suppress the oscillation.In this paper,the characteristics of frequency oscillation are analyzed.Then,based on the characteristics of system frequency and generators output in the process of oscillation,an online disturbance source location model is proposed.Through the method of correlation analysis is used to sort the correlation degree among the dates to realize the location of negative damping generators.Finally,the effectiveness of the proposed method is verified by using the measured datas in the regional power grid,which provides an effective method for dispatchers to locate disturbance sources quickly.

关 键 词：频率振荡 相关性分析 调频控制 扰动源定位 

分 类 号：TM74[电气工程—电力系统及自动化]