6.83
Date Code 20171021
Instruction Manual
SEL-421 Relay
Protection Applications Examples
345 kV Tapped Overhead Transmission Line Example
Table 6.21
Settings for 345 kV Tapped TX Example (Sheet 1 of 4)
Setting
Prompt
Entry
General Global (Global)
SID
Station Identifier (40 characters)
KELLOG --345 kV
RID
Relay Identifier (40 characters)
SEL-421 Relay
NUMBK
Number of Breakers in Scheme (1, 2)
1
BID1
Breaker 1 Identifier (40 characters)
Circuit Breaker 1
NFREQ
Nominal System Frequency (50, 60 Hz)
60
PHROT
System Phase Rotation (ABC, ACB)
ABC
DATE_F
Date Format (MDY, YMD, DMY)
MDY
FAULT
Fault Condition Equation (SEL
OGIC
Equation)
50P1 OR 51S1 OR Z2P OR Z2G OR Z3P
OR Z3G
Current and Voltage Source Selection Settings (Global)
ESS
Current and Voltage Source Selection (Y, N, 1, 2, 3, 4)
N
Breaker Configuration (Breaker Monitoring)
EB1MON
Breaker 1 Monitoring (Y, N)
N
BK1TYP
Breaker 1 Trip Type (Single Pole = 1, Three Pole = 3)
3
Breaker 1 Inputs (Breaker Monitoring)
52AA1
A-Phase N/O Contact Input—BK1 (SEL
OGIC
Equation)
IN101
Line Configuration (Group)
CTRW
Current Transformer Ratio—Input W (1–50000)
200
CTRX
Current Transformer Ratio—Input X (1–50000)
200
PTRY
Potential Transformer Ratio—Input Y (1–10000)
3000.0
VNOMY
PT Nominal Voltage (L-L)—Input Y (60–300 V secondary)
115
PTRZ
Potential Transformer Ratio—Input Z (1–10000)
3000.0
VNOMZ
PT Nominal Voltage (L-L)—Input Z (60–300 V secondary)
115
Z1MAG
Positive-Sequence Line Impedance Magnitude (0.05–255
secondary)
4.00
Z1ANG
Positive-Sequence Line Impedance Angle (5.00–90 degrees)
84.7
Z0MAG
Zero-Sequence Line Impedance Magnitude (0.05–255
secondary)
12.88
Z0ANG
Zero-Sequence Line Impedance Angle (5.00–90 degrees)
73.0
EFLOC
Fault Location (Y, N)
Y
LL
Line Length (0.10–999)
100.00
Relay Configuration (Group)
E21P
Mho Phase Distance Zones (N, 1–5)
3
E21MG
Mho Ground Distance Zones (N, 1–5)
3
E21XG
Quadrilateral Ground Distance Zones (N, 1–5)
N
ECVT
CVT Transient Detection
N
ESERCMP
Series-Compensated Line Logic (Y, N)
N
ECDTD
Distance Element Common Time Delay (Y, N)
Y
ESOTF
Switch-Onto-Fault (Y, N)
Y
EOOS
Out-of-Step (Y, Y1, N)
N
ELOAD
Load Encroachment (Y, N)
Y
E50P
Phase Inst./Def.-Time O/C Elements (N, 1–4)
1
Содержание SEL-421-4
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