一种基于自抗扰控制的多机低频振荡本地控制方法  

A Local Control Method of Multi-machine Low Frequency Oscillation Based on Active Disturbance Rejection Control

作　　者：马燕峰[1] 周一辰[1] 刘海航[1] 刘伟东[2] 赵书强[1] 刘教民[1] 

机构地区：[1]华北电力大学电气与电子工程学院,河北省保定市071003 [2]国网天津市电力公司,天津市河北区300072

出　　处：《中国电机工程学报》2017年第5期1360-1372,共13页Proceedings of the CSEE

基　　金：中央高校基本科研业务费专项资金资助项目(2016MS86);国家电网公司大电网重大专项资助项目(SGCC-MPLG019-2012)~~

摘　　要：电力系统低频振荡严重威胁着电网的安全稳定,主要表现为弱(负)阻尼振荡及强迫振荡。针对低频振荡抑制问题,引入基于自抗扰的多目标非线性控制方法,并采用本地控制信号实现多机电力系统低频振荡抑制。首先介绍自抗扰控制(active disturbance rejection control,ADRC)的基本理论,并进一步研究扩张状态观测器对低频振荡的观测能力。其次,结合非线性控制理论,采用微分几何线性化方法建立包含励磁及调速附加控制的电力系统模型,并将自抗扰控制与多性能指标非线性综合控制方法结合,采用分散的本地控制实现低频振荡抑制。最后,通过4机2区系统和新英格兰10机系统案例验证所提方法的有效性。理论分析和仿真结果表明本文所提方法具有良好的低频振荡抑制能力。Low frequency oscillation is a serious threat to the security and stability of power system, the main performance of low frequency oscillation is weak （negative） damping oscillation and forced oscillation. Aiming to suppress power system oscillations, a multi-objective nonlinear control method based on active disturbance rejection control （ADRC） was proposed, and the control was adopted to suppress multi-machine power system low frequency oscillation using local measurements. Firstly, the basic theory of ADRC was introduced, and the observation ability of the extended state observer （ESO） to the low frequency oscillation was researched. Secondly, the power system model with excitation and speed control was established by using the nonlinear model of the power system according to differential geometry linearization method and the control method combined with the multi-performance index nonlinear control and ADRC was proposed. Finally, the 4-machine 2-area system and new England 10 machine system cases were proposed to verify the effectiveness of this method. Theoretical analysis and simulation results show that the proposed method has a good ability to suppress low-frequency oscillation.

关 键 词：电力系统 低频振荡 微分几何 自抗扰控制 

分 类 号：TM76[电气工程—电力系统及自动化]