GE 750 Instruction Manual page 177

S6 Monitoring
REAL POWER
GE Multilin
c) Real Power Demand
PATH: SETPOINTS S6 MONITORING
[ ] REAL PWR DEMAND
FUNCTION: Disabled
MEASUREMENT TYPE:
MESSAGE
Block Interval
THERMAL 90% RESPONSE
MESSAGE
TIME: 15 min
TIME INTERVAL:
MESSAGE
20 min
REAL PWR DEMAND
MESSAGE
RELAYS (3-7): -----
REAL PWR DEMAND
MESSAGE
PICKUP: 10.0 MW
The real power demand is monitored by comparing to a pickup value. If the real
power demand pickup is ever equaled or exceeded, the relay can be configured to
cause an alarm or signal an output relay.
See page 5–79 for details on the
For the
THERMAL 90% RESPONSE TIME
state power to indicate 90% of the actual value. This setpoint allows the user to
approximately match the response of the relay to analog instruments. This setpoint
is visible only if
MEASUREMENT TYPE
For the , enter the time over which the real power demand calculation
TIME INTERVAL
is to be performed. For the
to show units appropriate to the power system size (see table below). This setpoint
is visible only if
MEASUREMENT TYPE
Table 5–16: Auto-Ranging Units
Nominal Power (P )
N
P < 1 MVA
N
1 MVA ≤ P < 10 MVA
N
10 MVA ≤ P
N
FIGURE 5–42: Real Power Demand Logic
http://www.GEmultilin.com
DEMAND REAL POWER
Range: Disabled,
Range: Thermal
Range: 5 min, 10 min, 15 min, 20 min,
Range: 5 min, 10 min, 15 min, 20 min,
Range: Any combination of the 3 to 7
Range: 1 to 30000 kW. Auto-ranging;
setting.
MEASUREMENT TYPE
setpoint, enter the time required for a steady
is "Thermal Exponential".
, power quantities auto-range
REAL POWER DEMAND PICKUP
is "Block Interval" or "Rolling Demand".
Power Units Resolution
kW
MW
MW
750/760
Feeder Management Relay
Alarm, Latched
Alarm, Control
Exponential, Block
Interval, Rolling Demand.
30 min, 60 min.
30 min, 60 min
Auxiliary Relays.
see table below for details.
1
0.01
0.1
5–81