0HWKRG RI RSHUDWLRQ
6$
9
&*&
6HOHFWLYLW\ GXULQJ DXWRPDWLF UHFORVXUH
)RU WKH DXWRUHFORVXUH VHTXHQFH WR EH VXFFHVVIXO
IDXOWV RQ DQ\ SDUW RI WKH OLQH PXVW EH FOHDUHG IURP
ERWK OLQH HQGV ZLWKLQ WKH VDPH VKRUWHVW SRVVL
EOH WLPH 8VXDOO\ WKHUHIRUH DQ LQVWDQWDQHRXV
VWDJH RI WKH VKRUWFLUFXLW SURWHFWLRQ LV VHW WR RSHUDWH
EHIRUH D UHFORVXUH E\ WKH $5XQLW 7KHUHIRUH WKH
VKRUWFLUFXLW SURWHFWLRQ IXQFWLRQ RI 6$ ZKLFK
FDQ LQLWLDWH WKH DXWRUHFORVH IXQFWLRQV SURYLGH D VSH
FLDO 5$5 VWDJH )XUWKHUPRUH RQH FDQ GHFLGH IRU
HDFK VKRUWFLUFXLW SURWHFWLRQ ZKHWKHU RU QRW LW VKDOO
LQLWLDWH WKH DXWRUHFORVH IXQFWLRQ
:LWK GLVWDQFH SURWHFWLRQ WKH ILUVW $5F\FOH LQ WKH
IROORZLQJ FDOOHG 5$5 DOORZV IDXOWV LQ WKH RYHUUHDFK
]RQH =% WR EH FOHDUHG LQVWDQWDQHRXVO\ KRZHYHU
WKLV FDQ EH FKDQJHG ZKHQ VHWWLQJ WKH UHOD\ )RU SRV
VLEOH IXUWKHU F\FOHV LQ WKH IROORZLQJ FDOOHG '$5 D
VHSDUDWH ]RQH =/ ZLWK D VHSDUDWH WLPH VWDJH 7/
EHFRPHV HIIHFWLYH
7KH QRUPDO GLVWDQFH ]RQHV = = = DQG WKH GLUHF
WLRQDO DQG QRQGLUHFWLRQDO ILQDO VWDJHV RI WKH GLV
WDQFH SURWHFWLRQ DUH LQGHSHQGHQW RI WKH DXWRPDWLF
UHFORVH IXQFWLRQ 7KLV PXVW EH FRQVLGHUHG ZKHQ D
IDXOW VKDOO EH FOHDUHG DIWHU D WLPH GHOD\ IRU VHOHFWLYLW\
UHDVRQV ZKHQ QR DXWRUHFORVH ZLOO RFFXU 7KXV LW LV
QRW UHDVRQDEOH WR VHW D VKRUWHU WLPH GHOD\ IRU QRUPDO
GLVWDQFH ]RQHV WKDQ IRU WKH 5$5 RYHUUHDFK ]RQH
=%
,I WKH GLVWDQFH SURWHFWLRQ LV RSHUDWHG ZLWK RQH RI WKH
FDUULHU VLJQDO WHOHSURWHFWLRQ V\VWHPV GHVFULEHG LQ
6HFWLRQ WKH RYHUUHDFK ]RQH LV FRQWUROOHG E\ WKH
XQLYHUVDO WHOHSURWHFWLRQ LQWHUIDFH LH WKH LQWHUIDFH
GHWHUPLQHV LI DQ XQGHOD\HG WULS RU ZLWK 7% LV SHU
PLWWHG IRU IDXOWV LQ WKH RYHUUHDFK ]RQH LH WR WKH OLPLW
RI ]RQH =% DQG WKXV LI WULSSLQJ LV VLPXOWDQHRXV DW
ERWK OLQH HQGV :KHWKHU WKH $5IXQFWLRQ LV UHDG\ IRU
RSHUDWLRQ RU QRW LV LUUHOHYDQW LQ WKLV FDVH VLQFH WKH
WUDQVPLVVLRQ V\VWHP JXDUDQWHHV VHOHFWLYLW\ RYHU
RI WKH OLQH OHQJWK
DQG
IDVW VLPXOWDQHRXV GLVFRQ
QHFWLRQ 6LPLODU DSSOLHV IRU GLUHFWLRQDO FRPSDULVRQ
HDUWK IDXOW SURWHFWLRQ UHIHU 6HFWLRQ
+RZHYHU LI WKH XQLYHUVDO WHOHSURWHFWLRQ LV VZLWFKHG
RII RU LI WKH FDUULHU GHYLFH LV IDXOW\ WKHQ WKH $5IXQF
WLRQ GHWHUPLQHV ZKLFK VWDJH = RU =% LV GHFLVLYH
IRU IDVW WULSSLQJ ,I QR DXWRUHFORVXUH LV DYDLODEOH IRU
H[DPSOH FLUFXLW EUHDNHU QRW UHDG\ IRU RSHUDWLRQ
WKHQ WKH QRUPDO JUDGLQJ RI WKH GLVWDQFH SURWHFWLRQ
PXVW EH YDOLG LH LQVWDQWDQHRXV WULSSLQJ RQO\ IRU
IDXOWV ZLWKLQ VWDJH = LQ RUGHU WR PDLQWDLQ VHOHFWLYLW\
)LJXUH
,W LV DOVR SRVVLEOH WR EORFN WKH $5IXQFWLRQ LI WKH
WUDQVPLVVLRQ V\VWHP LV QRW ZRUNLQJ
=
=%
=
=RQH UHDFK XQWLO WKH HQG RI WKH ILUVW GHDG WLPH =% UHOHDVH
=
=%
=
=RQH UHDFK DIWHU WKH ILUVW GHDG WLPH XQWLO H[SLU\ RI UHFODLP WLPH =% EORFNHG
)LJXUH =RQH UHDFK FRQWURO ZLWK WKH $5IXQFWLRQ
Summary of Contents for SIPROTEC 7SA511
Page 269: ... SSHQGL 6 9 SSHQGL HQHUDO GLDJUDPV RQQHFWLRQ GLDJUDPV 7DEOHV ...
Page 324: ... 6 9 ...