Methods of partial discharge localization in high voltage transformers:
Gespeichert in:
| 1. Verfasser: | |
|---|---|
| Weitere Verfasser: | , , |
| Format: | Abschlussarbeit Buch |
| Sprache: | English |
| Veröffentlicht: |
Garbsen
TEWISS
2021
|
| Ausgabe: | 1. Erstausgabe |
| Schriftenreihe: | Berichte aus dem IfES
03/2021 |
| Schlagworte: | |
| Online-Zugang: | Inhaltsverzeichnis |
| Beschreibung: | 139 Seiten 122 Illustrationen |
| ISBN: | 9783959005913 3959005911 |
Internformat
MARC
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| 001 | BV047435261 | ||
| 003 | DE-604 | ||
| 005 | 20211006 | ||
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| 008 | 210823s2021 gw a||| m||| 00||| eng d | ||
| 015 | |a 21,N32 |2 dnb | ||
| 016 | 7 | |a 1238261167 |2 DE-101 | |
| 020 | |a 9783959005913 |9 978-3-95900-591-3 | ||
| 020 | |a 3959005911 |9 3-95900-591-1 | ||
| 035 | |a (OCoLC)1263355456 | ||
| 035 | |a (DE-599)DNB1238261167 | ||
| 040 | |a DE-604 |b ger |e rda | ||
| 041 | 0 | |a eng | |
| 044 | |a gw |c XA-DE-NI | ||
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| 084 | |a ZN 8330 |0 (DE-625)157613: |2 rvk | ||
| 084 | |8 1\p |a 621.3 |2 23sdnb | ||
| 100 | 1 | |a Rahimbakhsh, Mahdi |d 1986- |e Verfasser |0 (DE-588)1242504567 |4 aut | |
| 245 | 1 | 0 | |a Methods of partial discharge localization in high voltage transformers |c Mahdi Rahimbakhsh |
| 250 | |a 1. Erstausgabe | ||
| 263 | |a 202108 | ||
| 264 | 1 | |a Garbsen |b TEWISS |c 2021 | |
| 300 | |a 139 Seiten |b 122 Illustrationen | ||
| 336 | |b txt |2 rdacontent | ||
| 337 | |b n |2 rdamedia | ||
| 338 | |b nc |2 rdacarrier | ||
| 490 | 0 | |a Berichte aus dem IfES |v 03/2021 | |
| 502 | |b Dissertation |c Gottfried Wilhelm Leibniz Universität Hannover |d 2021 | ||
| 650 | 0 | 7 | |a Zustandsüberwachung |0 (DE-588)4369492-5 |2 gnd |9 rswk-swf |
| 650 | 0 | 7 | |a Leistungstransformator |0 (DE-588)4167309-8 |2 gnd |9 rswk-swf |
| 650 | 0 | 7 | |a Teilentladung |0 (DE-588)4260183-6 |2 gnd |9 rswk-swf |
| 653 | |a partial discharge localization | ||
| 653 | |a PD monitoring and diagnostic | ||
| 653 | |a power transformers | ||
| 653 | |a online monitoring | ||
| 653 | |a Partial discharge | ||
| 655 | 7 | |0 (DE-588)4113937-9 |a Hochschulschrift |2 gnd-content | |
| 689 | 0 | 0 | |a Leistungstransformator |0 (DE-588)4167309-8 |D s |
| 689 | 0 | 1 | |a Zustandsüberwachung |0 (DE-588)4369492-5 |D s |
| 689 | 0 | 2 | |a Teilentladung |0 (DE-588)4260183-6 |D s |
| 689 | 0 | |5 DE-604 | |
| 700 | 1 | |a Hofmann, Lutz |d 1968- |0 (DE-588)128500786 |4 edt | |
| 700 | 1 | |a Werle, Peter |d 1968- |0 (DE-588)132193485 |4 edt | |
| 700 | 1 | |a Hanke-Rauschenbach, Richard |d 1978- |0 (DE-588)133930939 |4 edt | |
| 710 | 2 | |a TEWISS - Technik und Wissen GmbH |0 (DE-588)1067143165 |4 pbl | |
| 776 | 0 | 8 | |i Erscheint auch als |n Online-Ausgabe |z 9783959006095 |
| 856 | 4 | 2 | |m DNB Datenaustausch |q application/pdf |u http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=032837559&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |3 Inhaltsverzeichnis |
| 999 | |a oai:aleph.bib-bvb.de:BVB01-032837559 | ||
| 883 | 1 | |8 1\p |a vlb |d 20210805 |q DE-101 |u https://d-nb.info/provenance/plan#vlb | |
Datensatz im Suchindex
| _version_ | 1804182723709894656 |
|---|---|
| adam_text | CONTENTS
ABBREVIATIONS
...........................................................................................................................................
8
VARIABLES
AND
SYMBOLS
...........................................................................................................................
9
1
INTRODUCTION
......................................................................................................................................
1
1.1
STATISTICAL
ANALYSIS
OF
FAILURES
IN
POWER
TRANSFORMERS
.............................................................
3
1.2
COMMON
METHODS
OF
TROUBLESHOOTING
OF
POWER
TRANSFORMERS
................................................
7
1.2.1
WINDING
TEST
TECHNIQUES
..................................................................................................
9
1.2.2
BUSHING
TEST
TECHNIQUES
..................................................................................................
12
1.2.3
INSULATING
OIL
TEST
TECHNIQUES
........................................................................................
12
1.2.4
TAP
CHANGER
TEST
TECHNIQUES
............................................................................................
13
1.2.5
CORE
TEST
TECHNIQUES
.......................................................................................................
13
1.2.6
TEST
TECHNIQUES
FOR
TANK
AND
ASSOCIATED
DEVICES
............................................................
14
1.2.7
SPECIAL
OR
ADVANCED
MEASUREMENTS
.................................................................................
14
1.3
GOALS
OF
THE
THESIS
..................................................................................................................
18
2
CHARACTERISTICS
OF
PARTIAL
DISCHARGES
AND
ITS
MEASUREMENT
............................................................
20
2.1
PARTIAL
DISCHARGE
DEFINITION
...................................................................................................
22
2.2
TYPES
OF
PARTIAL
DISCHARGES
...................................................................................................
23
2.2.1
SURFACE
DISCHARGES
.........................................................................................................
23
2.2.2
CORONA
DISCHARGES
.........................................................................................................
24
2.2.3
INNER
PARTIAL
DISCHARGES
.................................................................................................
25
2.3
SOURCES
OF
INNER
PARTIAL
DISCHARGES
......................................................................................
26
2.3.1
PD
SOURCES
IN
GAS
INSULATION
.........................................................................................
26
2.3.2
PD
SOURCES
IN
LIQUID
INSULATION
....................................................................................
26
2.3.3
PD
SOURCES
IN
SOLID
INSULATION
.......................................................................................
27
2.4
MODELS
AND
REPRESENTATIONS
OF
PARTIAL
DISCHARGES
.................................................................
29
2.4.1
CAPACITIVE
NETWORK
MODEL
..............................................................................................
29
2.4.2
DIPOLE
MOMENT
MODEL
...................................................................................................
31
2.5
PARTIAL
DISCHARGE
MEASURING
METHODS
....................................................................................
35
2.5.1
APPARENT
CHARGE
MEASURING
CIRCUIT
...............................................................................
35
2.5.2
CALIBRATION
OF
THE
CIRCUIT
...............................................................................................
36
2.5.3
PD
ULTRA
HIGH
FREQUENCY
(UHF)
DETECTION
.....................................................................
37
2.5.4
ACOUSTIC
DETECTION
.........................................................................................................
37
2.5.5
CHEMICAL
ANALYSIS
.........................................................................................................
38
2.6
PD
INTERPRETATION
...................................................................................................................
39
2.6.1
CORONA
DISCHARGES
...........................................................................................................
39
2.6.2
VOID
DISCHARGES
.............................................................................................................
40
2.6.3
SURFACE
DISCHARGES
...........................................................................................................
41
2.7
PD
EVENTS
IN
POWER
TRANSFORMERS
............................................................................................
42
3
PARTIAL
DISCHARGE
LOCALIZATION
ALGORITHM
BASED
ON
TRANSFER
FUNCTION
.............................................
44
3.1
THEORETICAL
BACKGROUND
..........................................................................................................
45
3.1.1
MULTI-CONDUCTOR
TRANSMISSION
LINE
MODEL
......................................................................
45
3.1.2
ELECTRICAL
MODEL
PARAMETER
CALCULATION
..........................................................................
45
3.2
SIMULATED
TRANSFER
FUNCTION
....................................................................................................
49
3.2.1
SIMULATION
METHODS
........................................................................................................
50
3.2.2
RESULT
OF
SIMULATION
.......................................................................................................
50
3.3
EVALUATION
OF
PARTIAL
DISCHARGE
LOCALIZATION
ALGORITHM
..........................................................
55
3.4
TEST
SET-UP
..............................................................................................................................
56
3.4.1
TEST
TRANSFORMER
.............................................................................................................
56
3.4.2
PARTIAL
DISCHARGE
MEASUREMENT
SETUP
.............................................................................
57
3.5
PARTIAL
DISCHARGE
MEASUREMENT
RESULTS
...................................................................................
58
3.5.1
UNCERTAINTY
STUDY
...........................................................................................................
61
3.6
PD
LOCALIZATION
SOFTWARE
........................................................................................................
62
4
PARTIAL
DISCHARGE
LOCALIZATION
BASED
ON
ELECTRICAL
MEASUREMENTS
AND
APPARENT
CHARGES
..............
63
4.1
TEST
SETUP
...............................................................................................................................
64
4.1.1
MEASUREMENT
CIRCUIT
.......................................................................................................
65
4.1.2
CALIBRATION
PROCESS
..........................................................................................................
65
4.1.3
CIRCUIT
CONFIGURATIONS
....................................................................................................
66
4.1.4
MEASUREMENT
..................................................................................................................
69
4.2
DATA
ANALYSIS
..........................................................................................................................
70
4.2.1
INDIVIDUAL
WINDING
MEASUREMENT
....................................................................................
70
4.2.2
TWO
WINDING
MEASUREMENTS
..........................................................................................
75
4.2.3
THREE
WINDING
MEASUREMENTS
........................................................................................
82
4.3
ALGORITHM
...............................................................................................................................
85
4.3.1
INTRODUCTION
....................................................................................................................
85
4.3.2
GENERAL
DESCRIPTION
........................................................................................................
85
4.3.3
MATLAB
FUNCTION
AND
GRAPHIC
USER
INTERFACE
..............................................................
86
4.4
CORROBORATION
TESTS
AND
RESULTS
...............................................................................................
88
4.4.1
INTRODUCTION
....................................................................................................................
88
4.4.2
TEST
WITH
CALIBRATOR
DEVICE
.............................................................................................
88
4.4.3
TEST
WITH
REAL
PARTIAL
DISCHARGES
.....................................................................................
89
4.5
SUMMARY
................................................................................................................................
94
4.6
CONCLUSION
.............................................................................................................................
95
5
PARTIAL
DISCHARGE
LOCALIZATION
BASED
ON
CURVE
FITTING
METHOD
........................................................
97
5.1
THEORETICAL
BACKGROUND
AND
TEST
SETUP
...................................................................................
98
5.1.1
INVESTIGATED
MODEL
WINDING
...........................................................................................
98
5.1.2
TEST
SETUP
.......................................................................................................................
98
5.2
CURVE
FITTING
METHODS
..........................................................................................................
100
5.2.1
GAUSSIAN
METHOD
..........................................................................................................
100
5.2.2
EXPONENTIAL
METHOD
.....................................................................................................
100
5.2.3
FOURIER
SERIES
METHOD
...................................................................................................
101
5.3
PROCESSING
THE
SIGNALS
AND
DE-NOISING
..................................................................................
102
5.3.1
CALCULATION
OF
THE
FITTING
QUALITY
..................................................................................
102
5.3.2
DE-NOISING
AND
PREPARING
PROCESS
................................................................................
103
5.3.3
TIME
RANGE
FOR
CURVE
FITTING
.........................................................................................
104
5.3.4
RESULTS
OF
CURVE
FITTING
.................................................................................................
105
5.4
LOCALIZATION
ALGORITHM AND
RESULTS
.......................................................................................
110
5.4.1
RELATIONSHIP
BETWEEN
CF
AND
PARTIAL
DISCHARGE
LOCATION
.............................................
114
5.4.2
PARTIAL
DISCHARGE
LOCALIZATION
VIA
A
SIMPLE
METHOD
....................................................
115
5.4.3
PARTIAL
DISCHARGE
LOCALIZATION
VIA
POLYNOMIAL
FUNCTIONS
.............................................
116
5.5
SUMMARY
..............................................................................................................................
118
6
CONCLUSION
...................................................................................................................................
119
REFERENCES
............................................................................................................................................
121
APPENDIX
A:
PD
LOCALIZATION
SOFTWARE
...............................................................................................
125
|
| adam_txt |
CONTENTS
ABBREVIATIONS
.
8
VARIABLES
AND
SYMBOLS
.
9
1
INTRODUCTION
.
1
1.1
STATISTICAL
ANALYSIS
OF
FAILURES
IN
POWER
TRANSFORMERS
.
3
1.2
COMMON
METHODS
OF
TROUBLESHOOTING
OF
POWER
TRANSFORMERS
.
7
1.2.1
WINDING
TEST
TECHNIQUES
.
9
1.2.2
BUSHING
TEST
TECHNIQUES
.
12
1.2.3
INSULATING
OIL
TEST
TECHNIQUES
.
12
1.2.4
TAP
CHANGER
TEST
TECHNIQUES
.
13
1.2.5
CORE
TEST
TECHNIQUES
.
13
1.2.6
TEST
TECHNIQUES
FOR
TANK
AND
ASSOCIATED
DEVICES
.
14
1.2.7
SPECIAL
OR
ADVANCED
MEASUREMENTS
.
14
1.3
GOALS
OF
THE
THESIS
.
18
2
CHARACTERISTICS
OF
PARTIAL
DISCHARGES
AND
ITS
MEASUREMENT
.
20
2.1
PARTIAL
DISCHARGE
DEFINITION
.
22
2.2
TYPES
OF
PARTIAL
DISCHARGES
.
23
2.2.1
SURFACE
DISCHARGES
.
23
2.2.2
CORONA
DISCHARGES
.
24
2.2.3
INNER
PARTIAL
DISCHARGES
.
25
2.3
SOURCES
OF
INNER
PARTIAL
DISCHARGES
.
26
2.3.1
PD
SOURCES
IN
GAS
INSULATION
.
26
2.3.2
PD
SOURCES
IN
LIQUID
INSULATION
.
26
2.3.3
PD
SOURCES
IN
SOLID
INSULATION
.
27
2.4
MODELS
AND
REPRESENTATIONS
OF
PARTIAL
DISCHARGES
.
29
2.4.1
CAPACITIVE
NETWORK
MODEL
.
29
2.4.2
DIPOLE
MOMENT
MODEL
.
31
2.5
PARTIAL
DISCHARGE
MEASURING
METHODS
.
35
2.5.1
APPARENT
CHARGE
MEASURING
CIRCUIT
.
35
2.5.2
CALIBRATION
OF
THE
CIRCUIT
.
36
2.5.3
PD
ULTRA
HIGH
FREQUENCY
(UHF)
DETECTION
.
37
2.5.4
ACOUSTIC
DETECTION
.
37
2.5.5
CHEMICAL
ANALYSIS
.
38
2.6
PD
INTERPRETATION
.
39
2.6.1
CORONA
DISCHARGES
.
39
2.6.2
VOID
DISCHARGES
.
40
2.6.3
SURFACE
DISCHARGES
.
41
2.7
PD
EVENTS
IN
POWER
TRANSFORMERS
.
42
3
PARTIAL
DISCHARGE
LOCALIZATION
ALGORITHM
BASED
ON
TRANSFER
FUNCTION
.
44
3.1
THEORETICAL
BACKGROUND
.
45
3.1.1
MULTI-CONDUCTOR
TRANSMISSION
LINE
MODEL
.
45
3.1.2
ELECTRICAL
MODEL
PARAMETER
CALCULATION
.
45
3.2
SIMULATED
TRANSFER
FUNCTION
.
49
3.2.1
SIMULATION
METHODS
.
50
3.2.2
RESULT
OF
SIMULATION
.
50
3.3
EVALUATION
OF
PARTIAL
DISCHARGE
LOCALIZATION
ALGORITHM
.
55
3.4
TEST
SET-UP
.
56
3.4.1
TEST
TRANSFORMER
.
56
3.4.2
PARTIAL
DISCHARGE
MEASUREMENT
SETUP
.
57
3.5
PARTIAL
DISCHARGE
MEASUREMENT
RESULTS
.
58
3.5.1
UNCERTAINTY
STUDY
.
61
3.6
PD
LOCALIZATION
SOFTWARE
.
62
4
PARTIAL
DISCHARGE
LOCALIZATION
BASED
ON
ELECTRICAL
MEASUREMENTS
AND
APPARENT
CHARGES
.
63
4.1
TEST
SETUP
.
64
4.1.1
MEASUREMENT
CIRCUIT
.
65
4.1.2
CALIBRATION
PROCESS
.
65
4.1.3
CIRCUIT
CONFIGURATIONS
.
66
4.1.4
MEASUREMENT
.
69
4.2
DATA
ANALYSIS
.
70
4.2.1
INDIVIDUAL
WINDING
MEASUREMENT
.
70
4.2.2
TWO
WINDING
MEASUREMENTS
.
75
4.2.3
THREE
WINDING
MEASUREMENTS
.
82
4.3
ALGORITHM
.
85
4.3.1
INTRODUCTION
.
85
4.3.2
GENERAL
DESCRIPTION
.
85
4.3.3
MATLAB
FUNCTION
AND
GRAPHIC
USER
INTERFACE
.
86
4.4
CORROBORATION
TESTS
AND
RESULTS
.
88
4.4.1
INTRODUCTION
.
88
4.4.2
TEST
WITH
CALIBRATOR
DEVICE
.
88
4.4.3
TEST
WITH
REAL
PARTIAL
DISCHARGES
.
89
4.5
SUMMARY
.
94
4.6
CONCLUSION
.
95
5
PARTIAL
DISCHARGE
LOCALIZATION
BASED
ON
CURVE
FITTING
METHOD
.
97
5.1
THEORETICAL
BACKGROUND
AND
TEST
SETUP
.
98
5.1.1
INVESTIGATED
MODEL
WINDING
.
98
5.1.2
TEST
SETUP
.
98
5.2
CURVE
FITTING
METHODS
.
100
5.2.1
GAUSSIAN
METHOD
.
100
5.2.2
EXPONENTIAL
METHOD
.
100
5.2.3
FOURIER
SERIES
METHOD
.
101
5.3
PROCESSING
THE
SIGNALS
AND
DE-NOISING
.
102
5.3.1
CALCULATION
OF
THE
FITTING
QUALITY
.
102
5.3.2
DE-NOISING
AND
PREPARING
PROCESS
.
103
5.3.3
TIME
RANGE
FOR
CURVE
FITTING
.
104
5.3.4
RESULTS
OF
CURVE
FITTING
.
105
5.4
LOCALIZATION
ALGORITHM AND
RESULTS
.
110
5.4.1
RELATIONSHIP
BETWEEN
CF
AND
PARTIAL
DISCHARGE
LOCATION
.
114
5.4.2
PARTIAL
DISCHARGE
LOCALIZATION
VIA
A
SIMPLE
METHOD
.
115
5.4.3
PARTIAL
DISCHARGE
LOCALIZATION
VIA
POLYNOMIAL
FUNCTIONS
.
116
5.5
SUMMARY
.
118
6
CONCLUSION
.
119
REFERENCES
.
121
APPENDIX
A:
PD
LOCALIZATION
SOFTWARE
.
125 |
| any_adam_object | 1 |
| any_adam_object_boolean | 1 |
| author | Rahimbakhsh, Mahdi 1986- |
| author2 | Hofmann, Lutz 1968- Werle, Peter 1968- Hanke-Rauschenbach, Richard 1978- |
| author2_role | edt edt edt |
| author2_variant | l h lh p w pw r h r rhr |
| author_GND | (DE-588)1242504567 (DE-588)128500786 (DE-588)132193485 (DE-588)133930939 |
| author_facet | Rahimbakhsh, Mahdi 1986- Hofmann, Lutz 1968- Werle, Peter 1968- Hanke-Rauschenbach, Richard 1978- |
| author_role | aut |
| author_sort | Rahimbakhsh, Mahdi 1986- |
| author_variant | m r mr |
| building | Verbundindex |
| bvnumber | BV047435261 |
| classification_rvk | ZN 8330 |
| ctrlnum | (OCoLC)1263355456 (DE-599)DNB1238261167 |
| discipline | Elektrotechnik / Elektronik / Nachrichtentechnik |
| discipline_str_mv | Elektrotechnik / Elektronik / Nachrichtentechnik |
| edition | 1. Erstausgabe |
| format | Thesis Book |
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| genre | (DE-588)4113937-9 Hochschulschrift gnd-content |
| genre_facet | Hochschulschrift |
| id | DE-604.BV047435261 |
| illustrated | Illustrated |
| index_date | 2024-07-03T17:59:29Z |
| indexdate | 2024-07-10T09:12:05Z |
| institution | BVB |
| institution_GND | (DE-588)1067143165 |
| isbn | 9783959005913 3959005911 |
| language | English |
| oai_aleph_id | oai:aleph.bib-bvb.de:BVB01-032837559 |
| oclc_num | 1263355456 |
| open_access_boolean | |
| owner | DE-83 |
| owner_facet | DE-83 |
| physical | 139 Seiten 122 Illustrationen |
| publishDate | 2021 |
| publishDateSearch | 2021 |
| publishDateSort | 2021 |
| publisher | TEWISS |
| record_format | marc |
| series2 | Berichte aus dem IfES |
| spelling | Rahimbakhsh, Mahdi 1986- Verfasser (DE-588)1242504567 aut Methods of partial discharge localization in high voltage transformers Mahdi Rahimbakhsh 1. Erstausgabe 202108 Garbsen TEWISS 2021 139 Seiten 122 Illustrationen txt rdacontent n rdamedia nc rdacarrier Berichte aus dem IfES 03/2021 Dissertation Gottfried Wilhelm Leibniz Universität Hannover 2021 Zustandsüberwachung (DE-588)4369492-5 gnd rswk-swf Leistungstransformator (DE-588)4167309-8 gnd rswk-swf Teilentladung (DE-588)4260183-6 gnd rswk-swf partial discharge localization PD monitoring and diagnostic power transformers online monitoring Partial discharge (DE-588)4113937-9 Hochschulschrift gnd-content Leistungstransformator (DE-588)4167309-8 s Zustandsüberwachung (DE-588)4369492-5 s Teilentladung (DE-588)4260183-6 s DE-604 Hofmann, Lutz 1968- (DE-588)128500786 edt Werle, Peter 1968- (DE-588)132193485 edt Hanke-Rauschenbach, Richard 1978- (DE-588)133930939 edt TEWISS - Technik und Wissen GmbH (DE-588)1067143165 pbl Erscheint auch als Online-Ausgabe 9783959006095 DNB Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=032837559&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis 1\p vlb 20210805 DE-101 https://d-nb.info/provenance/plan#vlb |
| spellingShingle | Rahimbakhsh, Mahdi 1986- Methods of partial discharge localization in high voltage transformers Zustandsüberwachung (DE-588)4369492-5 gnd Leistungstransformator (DE-588)4167309-8 gnd Teilentladung (DE-588)4260183-6 gnd |
| subject_GND | (DE-588)4369492-5 (DE-588)4167309-8 (DE-588)4260183-6 (DE-588)4113937-9 |
| title | Methods of partial discharge localization in high voltage transformers |
| title_auth | Methods of partial discharge localization in high voltage transformers |
| title_exact_search | Methods of partial discharge localization in high voltage transformers |
| title_exact_search_txtP | Methods of partial discharge localization in high voltage transformers |
| title_full | Methods of partial discharge localization in high voltage transformers Mahdi Rahimbakhsh |
| title_fullStr | Methods of partial discharge localization in high voltage transformers Mahdi Rahimbakhsh |
| title_full_unstemmed | Methods of partial discharge localization in high voltage transformers Mahdi Rahimbakhsh |
| title_short | Methods of partial discharge localization in high voltage transformers |
| title_sort | methods of partial discharge localization in high voltage transformers |
| topic | Zustandsüberwachung (DE-588)4369492-5 gnd Leistungstransformator (DE-588)4167309-8 gnd Teilentladung (DE-588)4260183-6 gnd |
| topic_facet | Zustandsüberwachung Leistungstransformator Teilentladung Hochschulschrift |
| url | http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=032837559&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
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