基于GCSC抑制串补输电线路中次同步振荡的研究.pdfVIP

学兔兔 总第49卷 第556期 电测与仪表 VOI．49 No．556 2012年 第4期 Electrical MeasurementInstrumentation Apr．2012 基于GCSC抑制串补输电线路中次同步振荡的研究 任先文 ，孔祥实 ，王勋 ，夏庆生 (1．东北电力大学电气工程学院，吉林 吉林 132012；2．东北电力设计院，长春 130022) 摘要：含有串联补偿的电力系统中，在某些情况下有可能发生次同步谐振 (SSR)，损坏发电机轴系。运用 Gate-Controlled Series Capacitors(GCSC)可以有效的抑制或消除次同步谐振。本文将基于IEEE Frist Benchmark Model和轴系扭曲模型，运用过零检测装置控$~JGCSC的关断脉冲，从而改变串联补偿线路的等值电抗，破坏次同 步谐振的发生条件，达到抑制次同步谐振的目的。并且运用Matlab Simulink仿真系统对轴系参数进行仿真对比， 仿真结果表明在串补线路中运用GCSC可以有效地抑制次同步谐振。 关键词：次同步谐振；GCSC；过零检测；轴系扭曲 中图分类号：TM71 1 文献标识码：B 文章编号：1001—1390(2012)04—0055—04 Research on Damping Subsynchr0n0us Resonance(SSR)Using Gate-Controlled Series Capacitors(GCSC)in Series Compensated System REN Xian—wen ，KONG Xiang—shi ，WANG Xun1,XIA Qing—sheng (1．School of Electrical Engineering，Northeast Dianli University，Jilin 132012，Jilin，China． 2．Northeast Electric Power Design Institute，Changchun 1 30022，China) Abstract：It maybe happen subsynchronous resonance (SSR)in some cases，which lead to damage generator shaft in series compensated system．Gate—Controlled Series Capacitors (GCSC)can effectively mitigate or eliminate subsynchronous resonance．This investigation was done based on the IEEE First Benchmark Model and shafting mode1． Turn-off pulse generator with zero crossing detectors is used for GCSC controlling to break down the subsynchronous resonance happened conditions in order to damp SSR．The Matlah Simulink is employed to simulate the effect on stresses of shaft．The simulations results show that it can inhibit subsvnchr0n0us resonance． Key words：subsynchronous resonance (SSR)，Gate—Controlled Series Capacitors (GCSC)，zero crossing detectors， shafting oscillations 0 引 言