GE D60 - Page 303

GE Multilin D60 Line Distance Protection System 5-169
5 SETTINGS 5.6 GROUPED ELEMENTS
5
an undervoltage condition, which in turn is controlled by the VT FUSE FAIL OP operand with a 10 ms coordination timer. If a
trip from distance in not required, then it can be disabled with the LINE PICKUP DISTANCE TRIP setting. Configure the LINE
PICKUP RCL TRIP
operand to perform a trip action if the intent is apply zone 1 extension.
The zone 1 extension philosophy used here normally operates from an under-reaching zone, and uses an overreaching
distance zone when reclosing the line with the other line end open. The AR ACCELERATE setting is provided to achieve
zone 1 extension functionality if external autoreclosure is employed. Another zone 1 extension approach is to permanently
apply an overreaching zone, and reduce the reach when reclosing. This philosophy can be programmed via the autore-
close scheme.
Figure 5–66: LINE PICKUP SCHEME LOGIC
$.&'5
'/DQG/RQO\
/(2 OLQHHQGRSHQ
25
$1'
$1'
$1'
$1'
$1'
25
25
25
$1'
25

F\FOHV
,&SX
,$SX
,%SX
$1'
25
$1'
$1'
$1'
25
PV

$1'
$1'
6(77,1*
(QDEOHG 
'LVDEOHG 
)XQFWLRQ
6(77,1*
2II 
%ORFN
9$*
9$%
9%*
9%&
9&* 9&$
,&
,$
,%
6(77,1*
6LJQDO6RXUFH
6(77,1*
(QDEOHG 
'LVDEOHG 
$XWRUHFORVH&RRUGLQDWLRQ
%\SDVV
)/(;/2*,&23(5$1'6
*1'',67=3.3
3+',67=3.3
6(77,1*
(QDEOHG 
'LVDEOHG 
'LVWDQFH7ULS
6(77,1*
2II 
$XWRUHFORVH$FFHOHUDWH
)/(;/2*,&23(5$1'6
$5&/26(%.5
$5&/26(%.5
6RXUFHVHOHFWHGLQWKHOLQHSLFNXSHOHPHQW
)/(;/2*,&23(5$1'
65&;97)86()$,/23
6(77,1*
2II 
7HUPLQDO2SHQ
9$*RU9$%VHWWLQJ
9%*RU9%&VHWWLQJ
9&*RU9&$VHWWLQJ
6(77,1*
8QGHUYROWDJH3LFNXS
581
,$!VHWWLQJ
,%!VHWWLQJ
,&!VHWWLQJ
6(77,1*
3KDVH,2&/LQH3LFNXS
581
581
7,0(5
6(77,1*
2YHUYROWDJH3LFNXS'HOD\
7
3.3
7 
567
6(77,1*6
/LQH(QG2SHQ3LFNXS'HOD\
/LQH(QG2SHQ5HVHW'HOD\
7
3.3
7
567
6(77,1*6
$XWRUHFORVH&RRUGLQDWLRQ
3LFNXS'HOD\
$XWRUHFORVH&RRUGLQDWLRQ
5HVHW'HOD\
7
3.3
7
567
)/(;/2*,&23(5$1'6
/,1(3,&.83,$
/,1(3,&.83,%
/,1(3,&.83,&
)/(;/2*,&23(5$1'
/,1(3,&.835&/75,3
)/(;/2*,&23(5$1'
/,1(3,&.83/(23.3
)/(;/2*,&23(5$1'
/,1(3,&.83893.3
$1'
25
)/(;/2*,&23(5$1'6
/,1(3,&.8323
/,1(3,&.833.3
/,1(3,&.83'32
$1'