GE N60 Instruction Manual page 265

5 SETTINGS
The setting specifies the operating threshold for the effective operating signal of the element. If set
FLEXELEMENT 1 PICKUP
to "Over", the element picks up when the operating signal exceeds the
element picks up when the operating signal falls below the
The
FLEXELEMENT 1 HYSTERESIS
and the pickup threshold can be negative facilitating applications such as reverse power alarm protection. The FlexElement
can be programmed to work with all analog actual values measured by the relay. The
entered in per-unit values using the following definitions of the base units:
Table 5–17: FLEXELEMENT BASE UNITS
DCmA
DELTA TIME
FREQUENCY
PHASE ANGLE
POWER FACTOR
RTDs
SENSITIVE DIR POWER
(Sns Dir Power)
SOURCE CURRENT
SOURCE ENERGY
(Positive and Negative Watthours,
Positive and Negative Varhours)
SOURCE POWER
SOURCE VOLTAGE
SYNCHROCHECK
(Max Delta Volts)
The
FLEXELEMENT 1 HYSTERESIS
hysteresis loop as a percentage of the pickup value as shown in the FlexElement direction, pickup, and hysteresis diagram.
The setting specifies the time unit for the setting
FLEXELEMENT 1 DT UNIT
is set to "Delta". The
FLEXELEMENT 1 COMP MODE
rate of change mode of operation. This setting is applicable only if
This
FLEXELEMENT 1 PKP DELAY
specifies the reset delay of the element.
GE Multilin N60 Network Stability and Synchrophasor Measurement System
FLEXELEMENT 1 PICKUP
setting controls the element dropout. It should be noticed that both the operating signal
BASE = maximum value of the
under the +IN and –IN inputs.
BASE = 1 µs
f = 1 Hz
BASE
ϕ = 360 degrees (see the UR angle referencing convention)
BASE
PF = 1.00
BASE
BASE = 100°C
P = maximum value of 3 × V
BASE
configured for the sensitive power directional element(s).
I = maximum nominal primary RMS value of the +IN and –IN inputs
BASE
E = 10000 MWh or MVAh, respectively
BASE
P = maximum value of V
BASE BASE
V = maximum nominal primary RMS value of the +IN and –IN inputs
BASE
V = maximum primary RMS value of all the sources related to the +IN and –IN inputs
BASE
setting defines the pickup–dropout relation of the element by specifying the width of the
FLEXELEMENT 1 DT
setting specifies the pickup delay of the element. The
FLEXELEMENT 1 PICKUP
value.
FLEXELEMENT 1 PICKUP
setting for the two transducers configured
DCMA INPUT MAX
× I for the +IN and –IN inputs of the sources
BASE BASE
× I
for the +IN and –IN inputs
BASE
. This setting is applicable only if
FLEXELEMENT 1 dt
setting specifies duration of the time interval for the
FLEXELEMENT 1 COMP MODE
FLEXELEMENT 1 RST DELAY
5.5 FLEXLOGIC
value. If set to "Under", the
setting is
is set to "Delta".
setting
5-149
5