VSC的FACTS元件对动态电能质量的影响  

Study on impacts of VSC-based HVDC upon dynamic power quality

作　　者：束洪春[1] 王晶[2] 陈学允[2] 

机构地区：[1]昆明理工大学,云南昆明650051 [2]哈尔滨工业大学,黑龙江哈尔滨150001

出　　处：《华北电力大学学报（自然科学版）》2003年第3期1-8,共8页Journal of North China Electric Power University：Natural Science Edition

基　　金：云南省科技攻关资助项目(2000B2-02);云南省应用基础研究资助项目(98E0409M;99E006G;2002E0025);云南省中青年学术和技术带头人培养经费资助

摘　　要：鉴于目前研究的FACTS装置很大一部分运用到VSC这一事实,介绍了基于VSC的UPFC,HVDC和SMES的原理和工作过程,利用PSCAD/EMTDC软件包分别建立了它们的时域模型;从动态电能质量的角度出发,分析在系统稳态、遭受两相短路故障、输电线路雷击和系统含谐波源情况下,基于VSC的UPFC,HVDC和SMES装置对动态电能质量的影响。将其结果与未安装这些FACTS装置下的波形进行比较,结果表明,采用基于VSC的UPFC,HVDC和SMES技术将使系统动态电能质量得到改善。FACTS technique (Flexible Alternating Current Transmission Systems technique) is forecasted as one of the main support techniques in the future. FACTS are capable of regulating line voltage, controlling line load-flow, damping system oscillation and improving transient stability. Based on the fact mat a majority of FACTS controllers utilize bom shunt-connected and series-connected Voltage-Sourced Converters (VSC), the theory and operation process of UPFC, VSC-HVDC and VSC-SMES are briefly reviewed. The time-domain models with UPFC, VSC-HVDC and VSC-SMES are designed by using PSCAD /EMTDC software package. From the dynamic power quality point of view, the effects of VSC-based FACTS on the systems under steady-state and the one under the situations when a fault happened, a line was stricken by a lightning, and a harmonic source was added into the system, are discussed. In comparison with the results of systems without any FACTS controller under the same situations, VSC-based FACTS will improve the power system dynamic power quality.

关 键 词：柔性交流输电系统 VSC FACTS元件 动态电能质量 输电线路 时域模型 

分 类 号：TM721.2[电气工程—电力系统及自动化]