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CHAPTER 5: SETTINGS
CONTROL ELEMENTS
L60 LINE PHASE COMPARISON SYSTEM – INSTRUCTION MANUAL
5-271
5
5.7.6 Synchrocheck (ANSI 25)
SETTINGS
CONTROL ELEMENTS
SYNCHROCHECK
SYNCHROCHECK 1(4)
There are four identical synchrocheck elements available, numbered 1 to 4.
The synchronism check function supervises the paralleling of two parts of a system that are to be joined by the closure of
a circuit breaker. The synchrocheck elements are typically used at locations where the two parts of the system are
interconnected through at least one other point in the system.
Synchrocheck verifies that the voltages (V1 and V2) on the two sides of the supervised circuit breaker are within set limits
of magnitude, angle, and frequency differences. The time that the two voltages remain within the admissible angle
difference is determined by the setting of the phase angle difference
ΔΦ
and the frequency difference
Δ
F (slip frequency).
It can be defined as the time it takes the voltage phasor V1 or V2 to traverse an angle equal to 2
×
ΔΦ
at a frequency equal
to the frequency difference
Δ
F. This time is calculated by:
Eq. 5-26
where
ΔΦ
is phase angle difference in degrees
Δ
F is frequency difference in Hz
SYNCHROCHECK 1
SYNCHK1 FUNCTION:
Disabled
Range: Disabled, Enabled
SYNCHK1 BLOCK:
Off
Range: FlexLogic operand
SYNCHK1 V1 SOURCE:
SRC 1
Range: SRC 1, SRC 2, SRC 3, SRC 4
SYNCHK1 V2 SOURCE:
SRC 2
Range: SRC 1, SRC 2, SRC 3, SRC 4
SYNCHK1 MAX VOLT
DIFF: 10000 V
Range: 0 to 400000 V in steps of 1
SYNCHK1 MAX ANGLE
DIFF: 30°
Range: 0 to 100° in steps of 1
SYNCHK1 MAX FREQ
DIFF: 1.00 Hz
Range: 0.00 to 2.00 Hz in steps of 0.01
SYNCHK1 MAX FREQ
HYSTERESIS: 0.06 Hz
Range: 0.00 to 0.10 Hz in steps of 0.01
SYNCHK1 DEAD SOURCE
SELECT: LV1 and DV2
Range: None, LV1 and DV2, DV1 and LV2, DV1 or DV2,
DV1 Xor DV2, DV1 and DV2
SYNCHK1 DEAD V1
MAX VOLT: 0.30 pu
Range: 0.00 to 1.25 pu in steps of 0.01
SYNCHK1 DEAD V2
MAX VOLT: 0.30 pu
Range: 0.00 to 1.25 pu in steps of 0.01
SYNCHK1 LIVE V1
MIN VOLT: 0.70 pu
Range: 0.00 to 1.25 pu in steps of 0.01
SYNCHK1 LIVE V2
MIN VOLT: 0.70 pu
Range: 0.00 to 1.25 pu in steps of 0.01
SYNCHK1 TARGET:
Self-reset
Range: Self-reset, Latched, Disabled
SYNCHK1 EVENTS:
Disabled
Range: Disabled, Enabled
T
1
360
°
2
ΔΦ
×
----------------
Δ
F
×
-----------------------------
=
Содержание L60
Страница 130: ...4 30 L60 LINE PHASE COMPARISON SYSTEM INSTRUCTION MANUAL LOGIC DIAGRAMS CHAPTER 4 INTERFACES 4 ...
Страница 464: ...5 334 L60 LINE PHASE COMPARISON SYSTEM INSTRUCTION MANUAL TESTING CHAPTER 5 SETTINGS 5 ...
Страница 498: ...7 10 L60 LINE PHASE COMPARISON SYSTEM INSTRUCTION MANUAL TARGETS MENU CHAPTER 7 COMMANDS AND TARGETS 7 ...
Страница 570: ...10 14 L60 LINE PHASE COMPARISON SYSTEM INSTRUCTION MANUAL DISPOSAL CHAPTER 10 MAINTENANCE 10 ...
Страница 582: ...A 12 L60 LINE PHASE COMPARISON SYSTEM INSTRUCTION MANUAL FLEXANALOG ITEMS APPENDIX A FLEXANALOG OPERANDS A ...
Страница 588: ...C 4 L60 LINE PHASE COMPARISON SYSTEM INSTRUCTION MANUAL REVISION HISTORY APPENDIX C MISCELLANEOUS C ...
Страница 592: ...iv L60 LINE PHASE COMPARISON SYSTEM INSTRUCTION MANUAL ABBREVIATIONS ...