GE 750 User Manual

13-
12
750/760 Feeder Management Relay GE Power Management
13.4 DEMAND 13 S6 MONITORING
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13.4.3 REAL POWER DEMAND
The real power demand is monitored by comparing to a pickup value. If the real power demand pickup is ever
exceeded, the relay can be configured to cause an alarm or signal an output relay.
■ REAL POWER
■ [ENTER] for more
The
REAL POWER
Demand setpoints path is:
\ SETPOINTS \ S6 MONITORING \ DEMAND \ REAL POWER
REAL POWER DEMAND
FUNCTION: Disabled
Range: Disabled, Alarm, Latched Alarm, Control
Selects the required function.
MEASUREMENT TYPE:
Block Interval
Range: Thermal Exponential, Block Interval, Rolling Demand
Select one of three real power demand calculation methods.
THERMAL 90% RESPONSE
TIME: 15 min
Range: 5 min, 10 min, 15 min, 20 min, 30 min, 60 min
This message is only displayed if the
MEASUREMENT TYPE
is selected as Ther-
mal Exponential
. Enter the time required for a steady state real power to indi-
cate 90% of the actual value. This setpoint allows the user to approximately
match the response of the relay to analog instruments.
TIME INTERVAL:
20 min
Range: 5 min, 10 min, 15 min, 20 min, 30 min, 60 min
This message is only displayed if the
MEASUREMENT TYPE
is selected as Block
Interval
or Rolling Demand . Enter the time period over which the real power
demand calculation is to be performed.
REAL POWER DEMAND
RELAYS (3-7):-----
Range: Any Combination of the 3-7 AUXILIARY Relays
Select the output relays required.
REAL POWER DEMAND
PICKUP: 10.0 MW
Range: 0.1 to 3000.0 in steps of 0.1 MW
1
Enter the threshold value for real power demand. For example, if an action is
required when the real power demand is above 1.5 MW, enter
1.5 for this set-
point. When the maximum real power demand exceeds this setting, the pro-
grammed action will be performed.
1
Power quantities auto-range to show units appropriate to the power sys-
tem size.

GE 750 Specifications

General

Brand	GE
Model	750
Category	Relays
Language	English