电力系统及其自动化学报2018，Vol.30Issue(2)：30-35,6.DOI:10.3969/j.issn.1003-8930.2018.02.006
电力系统强迫功率扰动源波形与大小估计
Estimation of Waveform and Magnitude of Forced Power Disturbance Source in Power System
摘要
Abstract
The waveform and magnitude of forced power disturbance source have important influence on the stability of power system.Based on the system's original equation of state,a virtual disturbance is introduced to represent the actu?al disturbance in the system,and a disturbance observer is constructed accordingly.The output of the disturbance ob?server is compared with the real output of the system to form a residual error,which is solved by an iterative algorithm, thus an accurate estimation of the system disturbance is realized.On this basis,the influences of different characteris?tics of disturbance sources on the system stability are studied.Finally,the validity of the proposed method is verified by time domain simulation. It is concluded that the constructed observer can estimate both the forced power disturbance source and the system state.Compared with the regular disturbance source,the random disturbance source is more like?ly to cause system instability.关键词
扰动观测器/状态方程/强迫扰动/估计/电力系统Key words
disturbance observer/equation of state/forced disturbance/estimation/power system分类
信息技术与安全科学引用本文复制引用
李从善,和萍,李文峰,杨小亮,王明杰,杨存祥..电力系统强迫功率扰动源波形与大小估计[J].电力系统及其自动化学报,2018,30(2):30-35,6.基金项目
国家自然科学基金资助项目(51607158,51507157) （51607158,51507157）
河南省重大科技专项资助项目(161100211600) （161100211600）
高等学校重点科研资助项目(16A470016) （16A470016）
