TOA™ Analysis Report
PWTR Inspectorate001 / POWER TRANSFORMER
Equipment
Inspectorate001
Tank
POWER TRANSFORMER
Serial No.
20221201
Norms used
TRN_IEEE_69KV
Apparatus type
PWTR
Gassing status
4
Group name
OTHERS
DGA result
1/2
Region
Juabil
Moisture result
0/0
Norms
TRN_IEEE_69KV
FQ result
0/0
Fluid type
OIL
PCB result
0/0
Max rated voltage
13.8
Furan result
0/0
Fluid volume
10000
Oil test status
UNREVIEWED
Reliability-based DGA Summary
DGA last date
2022-03-06
Event summary
nei_hc+!
DGA samples
2
Cumulative sev liquid %
0.24
Gassing events
1
Cumulative sev paper %
0.00
Event fault type
T3|T2
Gassing status
Hazard factor %
1.62
Failure rate
0.24 %
4
Grey area represents
cumulative gassing event
severity.
Red arrow represents event
severity growth rate.
1.62 %/y
Accumulated NEI-HC
Reliability-based DGA Diagnosis
The analysis is tentative because it is based on a small number of samples. Add samples for more definite results. Recent severe fault gas
production (gassing status 4). Recent hydrocarbon gas production suggests an active fault. The fault type responsible for recent fault gas
production according to the 4-Simplex is "T3|T2". Medium to high temperature thermal fault (near 700°C).
Gassing Events
NEI-HC [kJ/kL]
Accumulated Hydrocarbon Gas NEI
1: T3|T2
0.6
0.4
0.2
0.0
2202
08
01-
15
01-
2202
2
2
01-
2202
1
0
02-
2202
-08
-15
-22
-01
-08
-02
-02
-02
-03
-03
2
2
2
2
2
2
2
2
2
2
20
20
20
20
20
Date
1
Report generated from INSPECTORATE at 20221130T112714Z
TOA™ Analysis Report
PWTR Inspectorate001 / POWER TRANSFORMER
NEI-CO [kJ/kL]
Accumulated Carbon Oxide Gas NEI
6
4
2
0
8
1-0
-0
022
2
5
1-1
-0
022
2
2
1-2
2-0
2
0
2
01
08
15
22
01
08
0202020203032
2
2
2
2
2
202
202
202
202
202
202
Date
Carbon Monoxide to Carbon Dioxide Ratio
CO/CO2
0.15
0.10
0.05
0.00
8
1-0
-0
022
2
5
1-1
-0
022
2
2
01
08
15
22
01
08
0202020203032
2
2
2
2
2
202
202
202
202
202
202
Date
1-2
2-0
2
0
2
ID
Event
Event start
Start value
Inc
Days
Samples
1
HC
2022-01-05
0.095
0.580
60
2
FT
T3|T2
RCOR %
Sev %
HF %
0.23
1.62
4-Simplex Diagnosis
Diagnosis
Event 1 Diagnosis Likelihood
PD
S
T1
T2
T3
D1
D2
0
25
50
75
% PDF/Max(PDF)
100
4-Simplex Remarks
A thermal fault that is near 700°C, likely from a hotspot. The relative likelihood of the significant faults are 58% T3 and 42% T2. More
details can be found in the fault type report
Duval Triangle Diagnosis
2
Report generated from INSPECTORATE at 20221130T112714Z
TOA™ Analysis Report
PWTR Inspectorate001 / POWER TRANSFORMER
Triangle Diagnosis: T3
High-range thermal fault (above 700°C).
PD
DT
T1
CH
4→
→
%
H4
C2
D1
%
T2
D2
T3
← % C2H2
Dissolved-Gas Data
Sample date
2022-03-06
2022-01-05
Hydrogen (H2)
70
5
µL/L
Methane (CH4)
18.0
3.0
µL/L
Ethane (C2H6)
74.0
18.0
µL/L
Ethylene (C2H4)
60.0
2.0
µL/L
Acetylene (C2H2)
2.0
0.0
µL/L
Carbon Monoxide (CO)
200
200
µL/L
Carbon Dioxide (CO2)
4000
1200
µL/L
Oxygen (O2)
1200
1452
µL/L
Nitrogen (N2)
64550
62440
µL/L
Total heat gas
152
23
µL/L
Predicted composite fault gas
107
41
µL/L
Acetylene/Hydrogen (C2H2/H2)
0.0
0.0
CO/CO2
0.050
0.167
Oxygen/Nitrogen (O2/N2)
0.019
0.023
NEI-HC
0.68
0.09
kJ/kL
NEI-CO
6.30
2.52
kJ/kL
4
1
Gassing status
3
Report generated from INSPECTORATE at 20221130T112714Z
TOA™ Analysis Report
PWTR Inspectorate001 / POWER TRANSFORMER
History Graphs and Diagnostic Charts
µL/L
Hydrocarbon gases and hydrogen
H2
CH4
C2H6
C2H4
C2H2
101
100
8
5
2
1-0
1-1
1-2
0
0
0
2
2
2
202
202
202
20
8
5
2
1
8
01
2-0
2-1
2-2
3-0
3-0
0
0
0
0
0
2
2
2
2
2
202
202
202
202
202
0222-
Atmospheric gases and carbon monoxide
104
N2
O2
CO2
CO
102
101
100
-08
-15
-22
-01 22-01 22-01
2
2
20
20
20
-01
-08
-15
-22
-01
-08
-02 22-02 22-02 22-02 22-03 22-03
2
2
20
20
20
20
20
20
NEI-HC
NEI-CO
6
kJ/kL
kJ/kL
0.6
0.4
0.2
0.0
2022-01-05
4
2
2022-01-25
2022-02-14
0
2022-01-05
2022-03-06
Hydrogen (H2)
2022-02-14
2022-03-06
Methane (CH4)
150
µL/L
80
60
40
100
50
20
0
2022-01-05
2022-01-25
200
100
µL/L
µL/L
103
2022-01-25
2022-02-14
0
2022-01-05
2022-03-06
4
2022-01-25
2022-02-14
2022-03-06
Report generated from INSPECTORATE at 20221130T112714Z
TOA™ Analysis Report
PWTR Inspectorate001 / POWER TRANSFORMER
Ethane (C2H6)
Ethylene (C2H4)
80
60
50
40
µL/L
µL/L
60
40
20
20
0
2022-01-05
30
10
2022-01-25
2022-02-14
0
2022-01-05
2022-03-06
Acetylene (C2H2)
300
µL/L
µL/L
2.0
1.5
1.0
200
100
0.5
2022-01-25
2022-02-14
0
2022-01-05
2022-03-06
Carbon Dioxide (CO2)
2022-01-25
2022-02-14
2022-03-06
Oxygen (O2)
4000
8000
3000
6000
µL/L
µL/L
2022-03-06
400
2.5
2000
1000
0
2022-01-05
2022-02-14
Carbon Monoxide (CO)
3.0
0.0
2022-01-05
2022-01-25
4000
2000
2022-01-25
2022-02-14
0
2022-01-05
2022-03-06
Nitrogen (N2)
2022-01-25
2022-02-14
2022-03-06
Total heat gas
200
60000
40000
µL/L
µL/L
150
20000
0
2022-01-05
100
50
2022-01-25
2022-02-14
0
2022-01-05
2022-03-06
5
2022-01-25
2022-02-14
2022-03-06
Report generated from INSPECTORATE at 20221130T112714Z
TOA™ Analysis Report
PWTR Inspectorate001 / POWER TRANSFORMER
TDCG
Predicted composite fault gas
500
100
80
300
µL/L
µL/L
400
200
100
60
40
20
0
2022-01-05
2022-01-25
2022-02-14
0
2022-01-05
2022-03-06
Acetylene/Hydrogen (C2H2/H2)
2022-02-14
2022-03-06
CO2/CO
0.030
20
0.025
15
0.020
0.015
10
0.010
5
0.005
0.000
2022-01-05
2022-01-25
2022-01-25
2022-02-14
0
2022-03-06 2022-01-05
CO/CO2
2022-01-25
2022-02-14
2022-03-06
Oxygen/Nitrogen (O2/N2)
0.20
0.020
0.15
0.015
0.10
0.010
0.05
0.00
2022-01-05
0.005
2022-01-25
2022-02-14
0.000
2022-01-05
2022-03-06
6
2022-01-25
2022-02-14
2022-03-06
Report generated from INSPECTORATE at 20221130T112714Z