Download Print this page

Siemens 7SA513 Instruction Manual page 101

Numerical distance protection for ehv systems
Hide thumbs Also See for 7SA513:

Advertisement

6$
9
 $FWLRQ WLPHV DQG UHFODLP WLPHV
,W LV RIWHQ DSSURSULDWH WR SUHYHQW UHDGLQHVV IRU UHFOR
VXUH ZKHQ WKH IDXOW KDV SHUVLVWHG IRU D VSHFLILHG
WLPH IRU H[DPSOH ZKHQ LW FDQ EH DVVXPHG WKDW WKH
DUF KDV EXUQW LWVHOI LQ WR VXFK DQ H[WHQW WKDW WKHUH LV
QR FKDQFH RI QDWXUDO TXHQFKLQJ GXULQJ WKH GHDG
WLPH
7ULSSLQJ DIWHU IDXOWV ZKLFK DUH FOHDUHG LQ D GHOD\HG
WLPH VKRXOG IRU UHDVRQV RI VHOHFWLYLW\ UHIHU WR WKH
IRUHJRLQJ VHFWLRQ  DOVR QRW UHVXOW LQ DQ DXWRUHFOR
VXUH
7KH $5IXQFWLRQV RI 6$ DUH SURYLGHG ZLWK VHW
WDEOH DFWLRQ WLPHV VHSDUDWH IRU 5$5 DQG '$5 ZKLFK
DUH VWDUWHG E\ WKH IDXOW GHWHFWLRQ VLJQDO ,I DIWHU H[SL
U\ RI WKH DFWLRQ WLPH QR WULSSLQJ VLJQDO KDV EHHQ JLY
HQ UHFORVXUH LV EORFNHG
7KH $5IXQFWLRQV RI 6$ DUH SURYLGHG ZLWK
WKUHH VHWWDEOH UHFODLP WLPHV ZKLFK GR QRW GLVFULPL
QDWH EHWZHHQ 5$5 DQG '$5 *HQHUDOO\ WKH UHFODLP
WLPH LV WKH WLPH SHULRG GXULQJ ZKLFK QR IXUWKHU UHFOR
VXUH DWWHPSW LV SHUPLWWHG
7KH UHFODLP WLPH 75(&/$,0 LV VWDUWHG DW HYHU\ UH
FORVH FRPPDQG ,I DXWRUHFORVXUH KDV EHHQ VXFFHV
VIXO DOO IXQFWLRQV UHVHW WR WKH TXLHVFHQW FRQGLWLRQ DI
WHU H[SLU\ RI 75(&/$,0 DQ\ IDXOW RFFXUULQJ DIWHU
WKH H[SLU\ RI WKH UHFODLP WLPH LV FRQVLGHUHG WR EH D
QHZ V\VWHP IDXOW :KHQ D UHQHZHG WULS FRPPDQG LV
JLYHQ ZLWKLQ WKLV UHFODLP WLPH WKH QH[W DXWRUHFORVH
F\FOH LV VWDUWHG LI PXOWLVKRW $5 LV SHUPLWWHG LI QR IXU
WKHU $5 F\FOH LV SHUPLWWHG D UHQHZHG WULS FRPPDQG
ZLWKLQ WKH UHFODLP WLPH LV ILQDO $5 KDV EHHQ XQ
VXFFHVVIXO
7KH ORFNRXW WLPH 7/2&. LV WKH WLPH SHULRG GXULQJ
ZKLFK DQ\ IXUWKHU FORVH FRPPDQG E\ WKH 6$
UHOD\ LV ORFNHG DIWHU ILQDO GLVFRQQHFWLRQ 7KLV DSSOLHV
IRU DOO FORVLQJ DWWHPSWV ZKLFK DUH SHUIRUPHG E\ WKH
UHOD\ ,I WKLV WLPH LV VHW WR * FORVLQJ LV ORFNHG RXW XQWLO
WKH $5 IXQFWLRQ LV UHVHW E\ HQHUJL]DWLRQ RI WKH ELQDU\
LQSXW l!$5 5HVHWl $IWHU WKH UHVHW VLJQDO DOO IXQF
WLRQV UHVHW WR WKH TXLHVFHQW FRQGLWLRQ
$ VSHFLDO UHFODLP WLPH 7%/2&. 0& LV SURYLGHG IRU
PDQXDO FORVLQJ 'XULQJ WKLV WLPH UHFORVXUH LV
EORFNHG DIWHU PDQXDO FORVH DQ\ WULS FRPPDQG ZLWK
LQ WKLV WLPH ZLOO EH D ILQDO WULS
&*&
 ,QWHUURJDWLRQ IRU UHDGLQHVV RI
WKH FLUFXLW EUHDNHU
3UHFRQGLWLRQ IRU D UHFORVH DWWHPSW DIWHU VKRUWFLUFXLW
LQWHUUXSWLRQ LV WKDW WKH FLUFXLW EUHDNHU LV UHDG\ IRU DW
OHDVW RQH 75,3&/26(75,3 F\FOH ZKHQ WKH $5
IXQFWLRQ LV LQLWLDWHG LH DW WKH LQVWDQW RI WULS FRP
PDQG  7KH UHDGLQHVV LQIRUPDWLRQ IURP WKH EUHDNHU
KDV WR EH WUDQVPLWWHG WR WKH GHYLFH YLD D ELQDU\ LQSXW
,Q FDVH WKDW VXFK UHDGLQHVV LQIRUPDWLRQ LV QRW DYDLO
DEOH LQWHUURJDWLRQ FDQ EH VXSSUHVVHG VLQFH RWKHU
ZLVH QR DXWRUHFORVH ZRXOG EH SRVVLEOH DW DOO
:KHQ VLQJOHVKRW DXWRUHFORVXUH LV SHUIRUPHG LW LV
VXIILFLHQW WR LQWHUURJDWH WKH EUHDNHU UHDGLQHVV RQH
VLQJOH WLPH EHIRUH LQLWLDWLRQ RI $5 $V IRU H[DPSOH
WKH DLU SUHVVXUH IRU EUHDNHU RSHUDWLRQ ZLOO FROODSVH
GXULQJ WKH WULS H[HFXWLRQ QR IXUWKHU LQWHUURJDWLRQ
VKRXOG EH FDUULHG RXW
:KHQ PXOWLVKRW DXWRUHFORVXUH LV XVHG LW LV DGYDQ
WDJHRXV WR LQWHUURJDWH EUHDNHU UHDGLQHVV QRW RQO\ DW
WKH LQVWDQW RI WKH ILUVW WULS FRPPDQG EXW DOVR EHIRUH
HYHU\ UHFORVH DWWHPSW RU EHIRUH HYHU\ RWKHU UHFORVH
DWWHPSW ,I WKLV IDFLOLW\ LV VHOHFWHG UHFORVXUH LV
EORFNHG DV ORQJ DV WKH FLUFXLW EUHDNHU LV QRW UHDG\ IRU
DQRWKHU 75,3&/26( VHTXHQFH
7KH UHFRYHU\ WLPH RI WKH FLUFXLW EUHDNHU FDQ EH VX
SHUYLVHG E\ WKH 6$ UHOD\ 7KLV VXSHUYLVLRQ WLPH
7&%6839 ZLOO UXQ DV ORQJ DV WKH FLUFXLW EUHDNHU
GRHV QRW LQIRUP DERXW UHDGLQHVV ,Q WKLV FDVH WKH
GHDG WLPH PD\ EH H[WHQGHG ZKHQ WKH EUHDNHU LV QRW
UHDG\ DIWHU H[SLU\ RI WKH VHW GHDG WLPH %XW LI WKH
EUHDNHU LV QRW \HW UHDG\ DIWHU H[SLU\ RI WKH VXSHUYL
VLRQ WLPH WKHQ UHFORVXUH LV EORFNHG 7KLV EORFNLQJ LV
FDQFHOHG RQO\ DIWHU WKH ORFNRXW WLPH 7/2&. UHIHU
WR 6HFWLRQ  KDV HODSVHG ,I 7/2&. LV VHW WR
* FORVLQJ LV ORFNHG RXW XQWLO WKH $5 IXQFWLRQ LV UHVHW
E\ HQHUJL]DWLRQ RI WKH ELQDU\ LQSXW l!$5 5HVHWl $I
WHU WKH UHVHW VLJQDO DOO IXQFWLRQV UHVHW WR WKH TXLHV
FHQW FRQGLWLRQ
0HWKRG RI RSHUDWLRQ


Advertisement

loading