Reactive Power Demand - GE 750 Instruction Manual

13.4 DEMAND
The reactive power demand is monitored by comparing to a pickup value. If the reactive power demand pickup
is ever exceeded, the relay can be configured to cause an alarm or signal an output relay.
REACTIVE POWER
[ENTER] for more
REACTIVE PWR DEMAND
FUNCTION: Disabled
MEASUREMENT TYPE:
13
Block Interval
THERMAL 90% RESPONSE
TIME: 15 min
TIME INTERVAL:
20 min
REACTIVE PWR DEMAND
RELAYS (3-7):-----
REACTIVE PWR DEMAND
PICKUP: 10.0 MVar
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Courtesy of NationalSwitchgear.com
The Demand setpoints path is:
REACTIVE POWER
\ SETPOINTS \ S6 MONITORING \ DEMAND \ REACTIVE POWER
Range: Disabled, Alarm, Latched Alarm, Control
Selects the required function.
Range: Thermal Exponential, Block Interval, Rolling Demand
Select one of three reactive power demand calculation methods.
Range: 5 min, 10 min, 15 min, 20 min, 30 min, 60 min
This message is only displayed if the
mal Exponential . Enter the time required for a steady state reactive power to
indicate 90% of the actual value. This setpoint allows the user to approximately
match the response of the relay to analog instruments.
Range: 5 min, 10 min, 15 min, 20 min, 30 min, 60 min
This message is only displayed if the
Interval or 'Rolling Demand'. Enter the time period over which the reactive
power demand calculation is to be performed.
Range: Any Combination of the 3-7 AUXILIARY Relays
Select the output relays required.
Range: 0.1 to 3000.0 in steps of 0.1 Mvar
Enter the threshold value for reactive power demand. For example, if an action
is required when the reactive power demand is above 1.5 Mvar, enter 1.5 for
this setpoint. When the maximum reactive power demand exceeds this setting,
the programmed action will be performed.
1
Power quantities auto-range to show units appropriate to the power sys-
tem size.
750/760 Feeder Management Relay
13 S6 MONITORING

13.4.4 REACTIVE POWER DEMAND

is selected as Ther-
MEASUREMENT TYPE
is selected as Block
MEASUREMENT TYPE
1
GE Power Management