Active Feeders
12
Total Load
847 MW
Bus Voltage
138.2 kV
Frequency
50.02 Hz
Power Factor
0.96
THD
2.1 %
Faults Today
0
Protection Ops
0
Single-Line Diagram
All Breakers NormalMain Bus — 138 kV
CB-01
T1
Feeder A
CB-02
T2
Feeder B
CB-03
T3
Feeder C
Breaker Status Matrix
Circuit Breaker Management
12 BreakersTransformer Monitoring
Power Quality Analysis
2.1%
Voltage THD
3.4%
Current THD
0.96
Power Factor
0.8%
Voltage Unbalance
Harmonic Spectrum
Voltage Waveform
Power Quality Events
| Time | Type | Phase | Magnitude | Duration | Description |
|---|---|---|---|---|---|
| 14:32:18 | Sag | A | 0.82 pu | 120 ms | Voltage sag on Phase A feeder F-03 |
| 12:15:04 | Swell | B,C | 1.12 pu | 45 ms | Overvoltage on capacitor switching |
| 09:47:33 | Transient | All | 1.8 pu | 2 ms | Lightning-induced transient |
| 08:22:11 | Sag | A,B | 0.91 pu | 80 ms | Motor start inrush on feeder F-07 |
| 06:05:44 | Flicker | All | Pst 0.9 | 10 min | Arc furnace load fluctuation |
| 03:18:29 | Sag | C | 0.87 pu | 200 ms | Downstream fault on F-11 |
| 01:42:07 | Harmonic | All | THD 4.8% | 5 min | VFD load causing 5th harmonic rise |
| 00:11:55 | Interruption | All | 0.0 pu | 350 ms | Breaker trip and auto-reclose |
Fault Event Log
| Time | Type | Equipment | Phase | Fault I (kA) | Duration | Protection | Cleared |
|---|
Fault Statistics (12 Months)
Protection & Relay Management
12 IEDs ArmedIEC 61850 Ed.21 in Test
Active IEDs
12 / 13
Pickups (24h)
7
Trips (24h)
2
GOOSE Health
98.4 %
Protection Elements by Zone
| Zone | Element | ANSI | Pickup | Time | Status |
|---|---|---|---|---|---|
| Z1 Bus A | Bus Differential | 87B | 0.20 pu | Inst | Armed |
| Z1 Bus A | Undervoltage | 27 | 0.85 pu | 2.0 s | Armed |
| Z2 Xfmr T1 | Xfmr Differential | 87T | 0.30 pu | Inst | Armed |
| Z2 Xfmr T1 | REF | 64REF | 0.10 pu | Inst | Armed |
| Z3 Feeder F-03 | Phase Overcurrent | 50/51 | 1.25 kA | 0.35 s | Pickup |
| Z3 Feeder F-03 | Ground Overcurrent | 50N/51N | 0.20 kA | 0.80 s | Armed |
| Z3 Feeder F-07 | Distance (Mho) | 21 | 80% Z1 | Inst | Armed |
| Z3 Feeder F-07 | Auto-Reclose | 79 | 3 shots | 1.5/5/15 s | Enabled |
| Z4 Incomer | Directional OC | 67 | 1.50 kA | 0.25 s | Armed |
| System | Under/Over Freq | 81U/O | 49.2 / 50.5 | 0.5 / 0.5 s | Armed |
Active Settings Group
Last change: 2026-04-14 by m.srdic • Verified by j.tanaka
Recent Pickup Ladder
14:31:58.01250F-03 Phase A overcurrent pickup (1.34 kA)
14:31:58.36251F-03 TOC trip, breaker CB-07 open
14:31:59.86279Auto-reclose shot 1 — success
09:47:33.00450NF-11 ground pickup, reset without trip
03:18:29.44127Bus A undervoltage pickup (0.83 pu)
Intelligent Electronic Devices (IEDs)
| Device | Bay | Vendor / Model | Firmware | Protocol | Last Pickup | Status |
|---|---|---|---|---|---|---|
| IED-BUS-A | Bus A | SEL-487B | R133-V1 | IEC 61850 / GOOSE | — | Armed |
| IED-BUS-B | Bus B | SEL-487B | R133-V1 | IEC 61850 / GOOSE | — | Armed |
| IED-XFMR-T1 | T1 138/22 kV | ABB RET670 | 2.2.5 | IEC 61850 / GOOSE | 2026-03-28 | Armed |
| IED-XFMR-T2 | T2 138/22 kV | ABB RET670 | 2.2.5 | IEC 61850 / GOOSE | — | Armed |
| IED-F-03 | Feeder F-03 | Siemens 7SJ85 | V9.30 | IEC 61850 / GOOSE | 14:31:58 | Pickup |
| IED-F-05 | Feeder F-05 | Siemens 7SJ85 | V9.30 | IEC 61850 / GOOSE | — | Armed |
| IED-F-07 | Feeder F-07 | SEL-411L | R320-V4 | IEC 61850 / GOOSE | — | Armed |
| IED-F-09 | Feeder F-09 | Siemens 7SJ85 | V9.30 | IEC 61850 / GOOSE | — | Armed |
| IED-F-11 | Feeder F-11 | SEL-411L | R320-V4 | IEC 61850 / GOOSE | 09:47:33 | Armed |
| IED-F-12 | Feeder F-12 | Siemens 7SJ85 | V9.30 | IEC 61850 / GOOSE | — | Test Mode |
| IED-INC-1 | Incomer 1 | GE MiCOM P645 | B2.2.6 | IEC 61850 / GOOSE | — | Armed |
| IED-INC-2 | Incomer 2 | GE MiCOM P645 | B2.2.6 | IEC 61850 / GOOSE | — | Armed |
| IED-CAP-1 | Cap Bank 1 | SEL-451 | R218-V3 | IEC 61850 / GOOSE | — | Comms Loss |