采用GTO逆变器的±20 Mvar STATCOM  

DEVELOPMENT OF±20 Mvar STATCOM EMPLOYING GTO INVERTERS

作　　者：刘文华[1] 梁旭[1] 姜齐荣[1] 罗承廉[2] 刘遵义 

机构地区：[1]清华大学电机系,北京100084 [2]河南省电力公司,郑州450052 [3]河南省电力试验研究所,郑州450052

出　　处：《电力系统自动化》2000年第23期19-23,共5页Automation of Electric Power Systems

基　　金：原电力部重大科技攻关项目

摘　　要：介绍了河南省电力局与清华大学联合研制的± 2 0 Mvar静止补偿器 (STATCOM)。该装置采用 4重共 48只 GTO的电压型逆变器以消除输出电压中 1 2 k± 1 (k=1 ,2 ,3… )次以外的谐波 ,GTO单管容量为 4.5k V/4k A。设计了一种新型的 GTO过电流保护、GTO关断过电压吸收电路及直流过电压抑制方法。控制器采用双机热备用结构 ,其采样、控制计算及脉冲发生器均采用基于32位数字信号处理器 TMS32 0 C31的高速数字控制方式。该装置已于 1 999年 4月投入现场试运行 ,结果证实了文中所给出的各种设计方法的正确性及可行性。To improve the stability of power transm ission system in He'nan Province,He'nan Electric Power Company and Tsinghua U niversity have jointly investigated and developed ± 2 0 Mvar STATCOM employing GTO inverters.The STATCOM consists of four six- pulse voltage source inverter units rated5 MVA each which use48GTOs rated4.5 k V/4 k A each to eliminate the 12 k± 1 k=1,2 ,3… ) order harmonic com ponents in the output voltage. A new type of GTO over- current protection,GTO turn- off low loss snubber circuit and a new m ethod of suppressing DC over- voltage are proposed. The controller adopts a duplex system.Its functions,including sampling,control calculation and pulse generating,are all im plem ented with high- speed digital processing method based on 32 - bit TMS32 0 C31DSP chip.The STATCOM has been installed in a 2 2 0 k V substation and has been put into operation successfully since April 1999.The field tests were carried out to verify the performance and the long- term reliability of the installation.The outline,technical features and field test results of the± 2 0 Mvar STATCOM are given.

关 键 词：静止补偿器 逆变器 电力系统 无功功率补偿 

分 类 号：TM714.3[电气工程—电力系统及自动化] TM464