2-
42
LPS-D Line Protection System
GE Power Management
2.3 PROTECTION SETTINGS
2 CALCULATION OF SETTINGS
2
Angles A, B and C are determined as a function of the reach (Zc) of the coordinating zone, the maximum load
flow (minimum Zload) and the fastest swing (first slip cycle). Angle A in the figure is selected via the ZxPCHA-
RANG (x = 2, 3 or 4) setting and determines the shape of the coordinating zone characteristic. Angle B is
selected via the MOBCHARANG setting and determines the shape of the MOB characteristic. Angle B should
be set so that the time for the fastest swing to traverse from angle B to angle A is not less than 30 milliseconds.
In addition, the A and B angle settings must be selected so that the difference between angle B and angle C is
never less than 20°. Note that angle C is determined as a function of the minimum load impedance (Zload) and
the reach (Zc) of the coordinating zone. Load flow and stability studies may have to be run to determine the
settings necessary to establish out-of-step blocking.
1601: MOBZONE - Coordinating Zone
Set MOBZONE to select a coordinating zone per the criteria described above.
1602: MOBCHARANG - MOB Characteristic Angle
Use the criteria described above to select an appropriate MOBCHARANG setting.
1603: BLOCKWHAT - Functions to Block during Out-of-Step Tripping
BLOCKWHAT is used to select which of the following are to be blocked during an out-of-step condition:
1.
BLKALL - Block all tripping regardless of what operated to initiate the trip.
2.
BLKDIST - Block tripping for operation of any of the distance functions.
3.
BLKPHAS - Block tripping by any of the phase distance functions.
4.
BLKNONE - allow tripping for any trip condition.
1604: BLOCKZ1 - Block All Zone 1 Functions
Set BLOCKZ1 = YES to block tripping by any of the Zone 1 distance functions, otherwise set BLOCKZ1 = NO.
1605: BLOCKZ2 - Block All Zone 2 Functions
Set BLOCKZ2 = YES to block tripping by any of the Zone 2 distance functions, otherwise set BLOCKZ2 = NO.
1606: BLOCKZ3 - Block All Zone 3 Functions
Set BLOCKZ3 = YES to block tripping by any of the Zone 3 distance functions, otherwise set BLOCKZ3 = NO.
1607: BLOCKZ4 - Block All Zone 4 Functions
Set BLOCKZ4 = YES to block tripping by any of the Zone 4 distance functions, otherwise set BLOCKZ4 = NO.
2.3.18 RECLOSER
The LPS-D is available with an optional recloser, described in Section 1.10: RECLOSER (OPTIONAL) on page
1–42. Note that if another relaying system is going to be used with or without the LPS-D to control the recloser,
then that relaying system must be capable of supplying a 1PRI (single phase reclose) and a 3PRI (three phase
reclose) input to the recloser. The following settings must be made when the recloser is supplied.
1801: RECLMODE - Select Reclosing Option
Set one of the following reclosing options:
1.
NONE - no reclosing selected. The three phase trip enable output is not enabled at this time.
Содержание LPS-D
Страница 2: ......
Страница 4: ......
Страница 164: ...3 14 LPS D Line Protection System GE Power Management 3 3 PRINTED CIRCUIT BOARD MODULES 3 HARDWARE DESCRIPTION 3 ...
Страница 226: ...7 4 LPS D Line Protection System GE Power Management 7 1 RATINGS 7 SPECIFICATIONS 7 ...
Страница 284: ...10 20 LPS D Line Protection System GE Power Management 10 8 HELP MENU 10 ALPS TEST PROGRAM 10 ...
Страница 334: ...A 4 LPS D Line Protection System GE Power Management A 1 FREQUENTLY ASKED QUESTIONS APPENDIXA A ...
Страница 412: ...C 34 LPS D Line Protection System GE Power Management C 3 POINT LISTS APPENDIXC C ...
Страница 416: ...D 4 LPS D Line Protection System GE Power Management D 1 KEYPAD MENUS APPENDIXD D ...
Страница 422: ...F 2 LPS D Line Protection System GE Power Management F 1 WARRANTY INFORMATION APPENDIXF F ...
Страница 435: ...GE Power Management LPS D Line Protection System xiii INDEX INDEX tests 6 11 ZONE TIMER functional tests 5 10 ...
Страница 436: ...xiv LPS D Line Protection System GE Power Management INDEX INDEX ...