交直流并联系统稳定器与附加控制器协调控制设计  

Design of Coordinated Control by Power System Stabilizer and DC Modulator in AC-DC Parallel System

作　　者：魏伟[1] 

机构地区：[1]广东省电力试验研究所,广州510600

出　　处：《广东电力》2007年第8期23-26,46,共5页Guangdong Electric Power

摘　　要：针对具有低频振荡现象的交直流并联系统,建立了单机无穷大系统的小干扰线性化模型,在对其进行低频振荡机理分析的基础上,设计了电力系统稳定器(PSS)和直流附加控制器(DCM)进行直流调制。当两种控制器分别控制和协调控制时,对低频振荡的抑制作用进行了比较,结果证明对于含有直流线路的系统,应该利用PSS和DCM协调控制,才能较好地抑制低频振荡。Aiming at the low-frequency oscillation of AC-DC parallel system, the linearized model of one-machine infinite bus （OMIB） system with small disturbance is established. Upon analysis of the mechanism of its low-frequency oscillation, the coordinated control by the power system stabilizer （PSS） and the DC modulator （DCM） is designed. A comparison is also made of the effects on damping the low-frequency oscillation when the PSS and the DCM are respectively and simultaneously in operation, The result shows that to damp low-frequency oscillation of the system with DC circuitry better, the PSS and the DCM should be used harmoniously.

关 键 词：低频振荡 交直流 电力系统稳定器 直流附加控制 

分 类 号：TM712[电气工程—电力系统及自动化]