对称根轨迹法设计新型电力系统控制器
摘要：随着互联电力系统规模不断扩大,电力系统低频振荡问题愈发突出。电力系统稳定器(PSS)在抑制低频振荡方面作用明显,但是也有其局限性,PSS的鲁棒性和多机系统情况下的稳定控制还有很多问题亟待解决。本文提出一种新型对称根轨迹法(SRL)设计控制器,以单机无穷大系统为例,进行SRL控制器设计,通过根轨迹图和阶跃响应来验证其控制效果,并与传统PSS进行对比。之后,为了增加其实际可行性,对SRL控制器进行了降维简化,只保留与转速和功角对应的分量,通过仿真可以看出,基本达到了全维控制器的控制效果。
Abstract:With the expansion of the interconnected power system scale, low frequency oscillation problems of power system are more and more outstanding. Power system stabilizer (PSS) does well in suppressing low frequency oscillations, but also has its limitations. The robustness of PSS and many problems in multi-machine system cases are required to be solved. In this paper, a new controller designed by symmetric root locus (SRL) method is presented. By taking a single machine infinite bus system as an example, the SRL controller is designed. The root locus diagram and step response of SRL controller are drawn to validate its control effect by comparing with that of traditional PSS controller. Later, in order to further increase its feasibility in application, the dimension reduction is used to simplify control for SRL controller, which only keeps the component corresponding to rotation speed and angle. It can be concluded that the basic control effect of full order SRL controller is reached from the simulation results.
标题：对称根轨迹法设计新型电力系统控制器
英文标题：New Power System Controller Designed by Symmetric Root Locus Method
作者：冯楠, 马进, 陈茜, 胡浩,
关键词：低频振荡, 电力系统稳定器(PSS), 对称根轨迹(SRL), 降维,
发表日期：2014-08-09
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