Accidental Energization - GE G30 Instruction Manual

5.6 GROUPED ELEMENTS
The element responds to the positive sequence impedance as shown below.
SETTING
LOSS OF EXCITATION
FUNCTION:
Disabled=0
Generator=1, Motor=1
SETTING
LOSS EXCIT BLK:
Off=0
COMPARATOR
SETTING
RUN
LOSS OF EXCITATION UV
SUPV 1 :
Disabled=1
Enabled=0
SETTING
LOSS OF EXCITATION
UV SUPV :
SETTING
RUN
LOSS OF EXCITATION UV
SUPV 2 :
Disabled=1
Enabled=0
SETTING
LOSS OF EXCITATION
SOURCE:
I_1
V_1
830001AB.CDR
5

PATH: SETTINGS GROUPED ELEMENTS
 ACCIDENTAL
 ENERGIZATION
This element provides protection against energization while the generator is at standstill or reduced speed. The feature is
armed using either the AND or OR combination of the undervoltage and machine off-line conditions, selected with the
ACCDNT ENRG ARMING MODE
The machine off-line status is indicated by a dedicated FlexLogic operand. Once armed, the accidental energization feature
operates upon detecting an overcurrent condition in any of the stator phases.
5-186
BLOCK (See description)
I_1 > 0.05 pu
AND
OR
|V_1| < PICKUP AND
OR
Figure 5–89: LOSS OF EXCITATION SCHEME LOGIC

SETTING GROUP 1(6)
ACCDNT ENRG
FUNCTION: Disabled
ACCDNT ENRG SOURCE:
MESSAGE
SRC 1
ACCDNT ENRG ARMING
MESSAGE
MODE: UV and Offline
ACCDNT ENRG OC
MESSAGE
PICKUP: 0.300 pu
ACCDNT ENRG UV
MESSAGE
PICKUP: 0.500 pu
ACCDNT ENRG OFFLINE:
MESSAGE
Off
ACCDNT ENRG BLOCK:
MESSAGE
Off
ACCDNT ENRG TARGET:
MESSAGE
Self-reset
ACCDNT ENRG EVENTS:
MESSAGE
Disabled
setting (see below). The undervoltage condition is determined from the measured voltages.
G30 Generator Protection System
SETTINGS
LOSS OF EXCITATION
FUNCTION:
LOSS OF EXCITATION
CENTER 1:
LOSS OF EXCITATION
RADIUS 1:
RUN
0 ms
20 ms
LOSS OF EXCITATION
CENTER 2:
LOSS OF EXCITATION
RADIUS 2:
RUN
0 ms
20 ms
OR


ACCIDENTAL ENERGIZATION

Range: Disabled, Enabled
Range: SRC 1, SRC 2, SRC 3, SRC 4
Range: UV and Offline, UV or Offline
Range: 0.000 to 3.000 pu in steps of 0.001
Range: 0.000 to 3.000 pu in steps of 0.001
Range: FlexLogic operand
Range: FlexLogic operand
Range: Self-reset, Latched, Disabled
Range: Disabled, Enabled
5 SETTINGS
FLEXLOGIC OPERANDS
LOSS EXCIT STG1 PKP
LOSS EXCIT STG1 DPO
SETTING
LOSS OF EXCITATION
PKP DELAY 1:
FLEXLOGIC OPERAND
LOSS EXCIT STG1 OP
0 ms
FLEXLOGIC OPERANDS
LOSS EXCIT STG2 PKP
LOSS EXCIT STG2 DPO
SETTING
LOSS OF EXCITATION
PKP DELAY 2:
FLEXLOGIC OPERAND
LOSS EXCIT STG2 OP
0 ms
FLEXLOGIC OPERAND
OR LOSS EXCIT OP
FLEXLOGIC OPERAND
LOSS EXCIT PKP
FLEXLOGIC OPERAND
LOSS EXCIT DPO
5.6.12 ACCIDENTAL ENERGIZATION
GE Multilin