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1、第!"卷第"#期中国电机工程学报4&56!"7&6"#8’/6!##"!##"年"#月$%&’(()*+,-&./0(1233!!##"10*+62&’6.&%35(’63+,6!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!文章编号:#!9:;:#"<(!##")"#;###";#9基于空间矢量的基波正序、负序分量及谐波分量的实时检测方法张桂斌",徐政",王广柱!("6浙江大学电机系,浙江杭州<"##!=;!6山东大学电气工程学院,山东济南!9##>")!"#$%&’$!()#*&"
2、(+’+,-.&*/"().$.".0"(’1)."2+$,+-,#’$&).’"&*3+!("(4.!.5#.’0.,’.1&"(4.!.5#.’0.0+)3+’.’"!&’$2&-)+’(00+)3+’.’"!6&!.$+’!3&0.4.0"+-?@A7BBC*;D*+",EF?0(+,",GA7BBCH+,;I0C!("6J(KH%/L(+/&.3636,?0(M*H+,F+*N(%-*/O,@H+,I0&C<"##!=,10*+H;!61&55(,(&.35(’/%*’H53+,*+((%*+,,20H+)&+,F+*N(%-*/O,P*+H+!9##>
3、",10*+H)&6!"-&0":A+(QL(/0&).&%)(/(’/*+,/0(.C+)HL(+/H5谐波分量。如果忽略滤波后残余的谐波分量,则滤波后的矢+(,H/*N(H+)K&-*/*N(-(RC(+’(’&LK&+(+/-H-Q(55H-/0(量可认为是由对应正序分量的逆时针方向旋转的矢量和对0H%L&+*’’&LK&+(+/-*-)(N(5&K()*+/0*-KHK(%6S+/0(应负序分量的顺时针方向旋转的矢量合成。实时分解这两L(/0&),/0(/0%((;K0H-(RCH+/*/O*-.*%-/5O’&+N(%/()*+/&H个矢量的方法为:将
4、分解后的两个矢量根据所用滤波器的特-KH’(N(’/&%,/0(+*/-%(H5KH%/H+)*LH,*+H%OKH%/H%(.*5/(%()性旋转一个适当的角度,可以完全补偿滤波所引起的相移,DO/Q&.*5/(%-%(-K(’/*N(5O6A./(%.*55(/*+,/0(%(LH*+*+,从而可以实时准确地分解出基波正序分量和基波负序分量,0H%L&+*’-H%(+(,5(’/HD5(,-&/0(.*5/(%()-KH’(;N(’/&%*-LH*+5O进而分解出谐波分量。仿真结果证明了所提方法的正确性’&LK&-()&./Q&N(’/&%-H’/CH55O
5、6T0(’&C+/(%’5&’UQ*-(和有效性。%&/H/*+,&+(’&%%(-K&+)-/&/0(.C+)HL(+/H5K&-*/*N(-(RC(+’(关键词:空间矢量;负序分量;正序分量;谐波;分解;检测’&LK&+(+/,H+)/0(’5&’UQ*-(%&/H/*+,&+(’&%%(-K&+)-/&/0(.C+)HL(+/H5+(,H/*N(-(RC(+’(’&LK&+(+/6AL(/0&)*-中图分类号:TZ[==文献标识码:A)(N(5&K()*+/0(KHK(%/&%(H5/*L()(’&LK&-(/0(/Q&N(’/&%-6A./(%)(’&L
6、K&-*+,,%&/H/(/0(/Q&N(’/&%-HK%&K(%H+,5(9引言H’’&%)*+,/&/0(K0H-(-0*./’HC-()DO/0(.*5/(%-H//0(各种基于421(4&5/H,(2&C%’(1&+N(%/(%)的.C+)HL(+/H5.%(RC(+’O%(-K(’/*N(5O,/0(K0H-(-0*./’H+D(’&LK(+-H/()62&/0(.C+)HL(+/H5+(,H/*N(H+)K&-*/*N(WA1T2装置、直流输电系统及$GZ整流器需要实-(RC(+’(’&LK&+(+/-’H+D()(/(’/()%(H5/*L(Q*/
7、00*,0时地检测电压和电流的负序分量,以避免系统电压K%(’*-*&+6S+/0(-HL(/*L(,/0(0H%L&+*’-’H+H5-&D()(/(’/()不对称引起的过电流和直流侧电压的波动;在变压DO/0(L(/0&)62*LC5H/*&+%(-C5/-0HN(-0&Q+/0(NH5*)*/O&.器、电机保护中常需要快速地测量负序分量[",!];为/0(K%&K&-()L(/0&)6了对电力系统中的负序分量、基波无功分量和谐波7.%8+-$!:-KH’(N(’/&%;+(,H/*N(-(RC(+’(’&LK&+(+/;分量进行经济有效的补偿,也需要对各分
8、量进行实K&-*/*N(