GE N60 Instruction Manual page 306

5.7 CONTROL ELEMENTS
For UR-2: · Digitizer to prepare the measured power for adding to the remote power,
direct inputs to receive the remote power from the UR-1 IED,
8-bit comparator to sum the power values and apply a threshold, and
user-definable display messages for telemetry (optional).
The maximum active power at the UR-1 location is:
The maximum active power at the UR-2 location is:
For the two power values to be subsequently added, a common base must be selected for digitization. For this example, an
arbitrary value of 1500 MW is selected as a base and maximum value for digitization. Consequently, one count of digitized
power at either location is worth 1500 MW / 127 = 11.811 MW (refer to the Digitizers section in this chapter for details).
For the Digitizer at UR-1:
1. UR base unit for power given by
2. The maximum power to be monitored (in pu) given by
3. The following settings should be applied:
DIGITIZER 1 SOURCE
For the Digitizer at UR-2:
1. UR base unit for power given by
2. The maximum power to be monitored (in pu) given by
3. The following settings should be applied:
DIGITIZER 1 SOURCE
5
For the Direct Outputs at UR-1:
1. Assume the UR-1 IED is labeled as direct device 1 (
2. Assume bits 1 to 8 are used for sending the required power to the UR-2 IED. The following settings should be applied:
DIRECT OUT 1 OPERAND:
DIRECT OUT 2 OPERAND:
DIRECT OUT 3 OPERAND:
DIRECT OUT 4 OPERAND:
For the Direct Inputs at UR-2:
1. Apply the following settings (direct inputs 10 through 17 are used) to receive the digitized power from the UR-1 IED:
DIRECT INPUT 10 DEVICE ID:
DIRECT INPUT 11 DEVICE ID:
DIRECT INPUT 12 DEVICE ID:
DIRECT INPUT 13 DEVICE ID:
DIRECT INPUT 14 DEVICE ID:
DIRECT INPUT 15 DEVICE ID:
DIRECT INPUT 16 DEVICE ID:
DIRECT INPUT 17 DEVICE ID:
2. The remote power will be available as the
(the most significant bit) and
For the 8-Bit Comparator at UR-2:
1. Remote power from UR-1 IED received on direct inputs is the first argument for the comparator. As such, the following
settings should be applied:
8 BIT COMP 1 ARG A0:
8 BIT COMP 1 ARG A1:
8 BIT COMP 1 ARG A2:
8 BIT COMP 1 ARG A3:
2. Local power from the UR-2 IED available internally is the second argument for the comparator. Thus, the following set-
tings should be applied:
5-176
P
P
P 345 kV 2 kA
=
BASE
: "SRC 1 P" and
DIGITIZER 1 LIMIT
P 220 kV 3 kA
=
BASE
: "SRC 4 P" and
DIGITIZER 1 LIMIT
" "
DIGITIZER 1 BIT 0
" "
DIGITIZER 1 BIT 1
" "
DIGITIZER 1 BIT 2
" "
DIGITIZER 1 BIT 3
" "
1 DIRECT INPUT 10 BIT NUMBER:
" "
1 DIRECT INPUT 11 BIT NUMBER:
" "
1
DIRECT INPUT 12 BIT NUMBER:
" "
1
DIRECT INPUT 13 BIT NUMBER:
" "
1
DIRECT INPUT 14 BIT NUMBER:
" "
1
DIRECT INPUT 15 BIT NUMBER:
" "
1
DIRECT INPUT 16 BIT NUMBER:
" "
1
DIRECT INPUT 17 BIT NUMBER:
DIRECT INPUT 10 On
DIRECT INPUT 17 On
" "
DIRECT INPUT 1 On
" "
DIRECT INPUT 2 On
" "
DIRECT INPUT 3 On
" "
DIRECT INPUT 4 On
N60 Network Stability and Synchrophasor Measurement System
× × ×
3 345 kV 1.25 1.8 kA
=
× × ×
3 220 kV 1.25 2.5 kA
=
× 690 MW (refer to the FlexElements™ section for details).
=
1500 MW 690 MW ⁄ 2.174 pu
=
= "2.174 pu"
×
660 MW (refer to the FlexElements™ section for details).
=
⁄
1500 MW 660 MW 2.273 pu
=
= "2.273 pu"
= "1").
DIRECT OUTPUT DEVICE ID
"
DIGITIZER 1 BIT 4
DIRECT OUT 5 OPERAND:
"
DIGITIZER 1 BIT 5
DIRECT OUT 6 OPERAND:
"
DIGITIZER 1 BIT 6
DIRECT OUT 7 OPERAND:
"
DIGITIZER 1 BIT 7
DIRECT OUT 8 OPERAND:
" "
1
" "
2
" "
3
" "
4
" "
5
" "
6
" "
7
" "
8
(the least significant bit) through
(the sign bit) FlexLogic™ operands.
"
8 BIT COMP 1 ARG A4: DIRECT INPUT 5 On
"
8 BIT COMP 1 ARG A5: DIRECT INPUT 6 On
"
DIRECT INPUT 7 On
8 BIT COMP 1 ARG A6:
"
DIRECT INPUT 8 On
8 BIT COMP 1 ARG A7:
5 SETTINGS
×
1.0 1345 MW
=
×
1.0 1191 MW
=
.
.
"
"
"
"
DIRECT INPUT 16 On
"
"
"
"
GE Multilin