Siemens SIPROTEC 7SA511 - Page 39

0HWKRG RI RSHUDWLRQ6$9
&*&
 ,PSHGDQFH IDXOW GHWHFWLRQ IL[LPSHGDQFH RSWLRQDO
,PSHGDQFH IDXOW GHWHFWLRQ LV D ORRSGHGLFDWHG IDXOW
GHWHFWLRQ SURFHGXUH (LWKHU WKH WKUHH SKDVHSKDVH
ORRSV ZLWKRXW HDUWK IDXOW RU WKH WKUHH SKDVHHDUWK
ORRSV ZLWK HDUWK IDXOW DUH PRQLWRUHG GHSHQGLQJ RQ
WKH UHVXOW RI WKH HDUWK IDXOW GHWHFWLRQ 6HFWLRQ
 $ SUHUHTXLVLWH IRU PHDVXUHPHQW RI D ORRS
LPSHGDQFH LV WKDW DW OHDVW RQH RI WKH DVVLJQHG SKDVH
FXUUHQWV DV ZHOO DV WKH GLIIHUHQFH FXUUHQW GHFLVLYH IRU
WKH ORRS KDYH H[FHHGHG DQ DGMXVWDEOH PLQLPXP YDO
XH ,
SK
!
3LFNXS FDXVHG E\ VLQJOHSKDVH HDUWK IDXOWV LQ V\V
WHPV ZLWK D QRQHDUWKHG VWDUSRLQW LV HIIHFWLYHO\ VXS
SUHVVHG E\ WKH PHDVXUHV GHVFULEHG LQ 6HFWLRQ

7KH LPSHGDQFHV DUH FDOFXODWHG VHSDUDWHO\ IRU 5 DQG
; LQ F\FOLF WLPH LQWHUYDOV DQG FRPSDUHG ZLWK WKH VHW
YDOXHV $ PHDVXUHG YDOXH VWHS FKDQJH PRQLWRU LV
XVHG WR V\QFKURQL]H WKH PHDVXUHPHQW ZLQGRZ RQ
RFFXUUHQFH RI D IDXOW &DOFXODWLRQ SURFHGXUH LV WKH
VDPH DV WKDW GHVFULEHG IRU GLVWDQFH PHDVXUHPHQW
LQ 6HFWLRQ 
$Q H[DPSOH RI WKH IDXOW GHWHFWLRQ FKDUDFWHULVWLF LQ
WKH FRPSOH[ 5; SODQH LV VKRZQ LQ )LJXUH  7KH
EROG GRWV LGHQWLI\ WKH VHWWLQJ SDUDPHWHUV ZKLFK GH
WHUPLQH WKH JHRPHWU\ RI WKH IDXOW GHWHFWLRQ SRO\JRQ
7KH ; LQWHUVHFWLRQV ;$ DQG ;$ DUH GHFLVLYH IRU
WKH IDXOW UHDFK LQ WKH IRUZDUG OLQH GLUHFWLRQ DQG LQ
WKH UHYHUVH EXVEDU GLUHFWLRQ 7KH 5 LQWHUVHFWLRQV
FDQ EH VHW GLIIHUHQWO\ IRU SKDVHSKDVH ORRSV 5$
DQG SKDVHHDUWK ORRSV 5$( ,W LV WKXV SRVVLEOH
HJ WR SHUPLW D ODUJHU IDXOW UHVLVWDQFH WROHUDQFH IRU
HDUWK IDXOWV EROG GRWWHG OLQH LQ )LJXUH 
,Q RUGHU WR JXDUDQWHH XQHTXLYRFDO FULWHULD IRU GLV
FULPLQDWLRQ EHWZHHQ ORDG RSHUDWLRQ DQG D VKRUWFLU
FXLW  HVSHFLDOO\ LQ WKH FDVH RI ORQJ KLJKORDGHG
OLQHV  WKH FKDUDFWHULVWLFV FDQ EH VHW GHSHQGHQW RQ
WKH SKDVH DQJOH WKH 5 VHFWLRQ 5$ WKHQ DSSOLHV WR
SKDVH DQJOHV DERYH D VHWWDEOH YDOXH 
$
WKH5VHF
WLRQ 5$ EHORZ 
$

7R DYRLG LQWHUPLWWHQW SLFNXS VLJQDOV QHDU WKH ERUGHU
OLQHV RI WKH FKDUDFWHULVWLF D K\VWHUHVLV RI   LV SUR
YLGHG
3KDVH DQJOH GHSHQGHQFH FDQ VHSDUDWHO\ EH
DFKLHYHG IRU HDUWK IDXOW ZLWK 5$( DQG 
$(
EXW IRU
UHDVRQV RI VLPSOLILFDWLRQ WKLV LV QRW LOOXVWUDWHG LQ )LJ
XUH 
;
;$
;  $
5$
5$(
5$
5
5$
5$
5$(
)RUZDUGV
GLUHFWLRQ
5HYHUVH
GLUHFWLRQ

$
)LJXUH  ,PSHGDQFH IDXOW GHWHFWLRQ FKDUDFWHU
LVWLFV
3LFNXS UHVXOWV IRU WKH PHDVXUHPHQW ORRS LQ ZKLFK
WKH LPSHGDQFH YHFWRU OLHV ZLWKLQ WKH IDXOW GHWHFWLRQ
SRO\JRQ ,I GHWHFWLRQ RFFXUV LQ PRUH WKDQ RQH ORRS
WKH UHOD\ UHJDUGV DV YDOLG DOO WKRVH ORRSV ZKRVH LP
SHGDQFH LV QRW JUHDWHU WKDQ   RI WKDW VPDOOHVW
LPSHGDQFH 7KLV DYRLGV ZURQJ SLFNXS VLJQDOV
ZKLFK FRXOG EH FDXVHG E\ WKH LQIOXHQFH RI WKH IDXOW
FXUUHQWV DQG YROWDJHV RQ WKH XQIDXOWHG OLQH ORRSV 
HVSHFLDOO\ LQ FDVHV RI VPDOO VRXUFH LPSHGDQFHV
7KH LPSHGDQFH IDXOW GHWHFWLRQ IRU SKDVHHDUWK LV
VXSSOHPHQWHG E\ DQ RYHUFXUUHQW VWDJH ,
SK
!!
ZKHUH SLFNXS RI WKH RYHUFXUUHQW VWDJH RQO\ OHDGV WR
GHWHFWLRQ LI WKH DVVRFLDWHG LPSHGDQFH ORRS KDV
EHHQ HOLPLQDWHG DV GHVFULEHG LQ WKH SUHYLRXV SDUD
JUDSK ,Q WKLV PDQQHU GRXEOH IDXOWV ZLWK KLJK FXUUHQW
DUH DOVR FRUUHFWO\ GHWHFWHG HYHQ LI D IDXOW ORRS KDV
EHHQ HOLPLQDWHG E\ WKH SURFHGXUH GHVFULEHG DERYH
6LQFH WKH RYHUFXUUHQW VWDJH FDQ RQO\ UHHVWDEOLVK
HOLPLQDWHG ORRSV IRU SLFNXS HUURQHRXV IDXOW GHWHF
WLRQ DV D UHVXOW RI DQ RYHUFXUUHQW LV SUHYHQWHG DW WKH
VDPH WLPH LI WKH VKRUWFLUFXLW FXUUHQWV LQ WKH IDXOWIUHH
SKDVHV FDQ H[FHHG WKH VHW RYHUFXUUHQW YDOXH RQ
QRQHDUWKHG IHHGLQJ WUDQVIRUPHUV RU HDUWKHG FRQ
VXPHU WUDQVIRUPHUV