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1. WO2020109002 - METHOD FOR MONITORING A TRANSFORMER

Publication Number WO/2020/109002
Publication Date 04.06.2020
International Application No. PCT/EP2019/081235
International Filing Date 13.11.2019
IPC
H02M 5/10 2006.01
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
5Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
02without intermediate conversion into dc
04by static converters
10using transformers
H02M 1/00 2006.01
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
1Details of apparatus for conversion
G05B 19/406 2006.01
GPHYSICS
05CONTROLLING; REGULATING
BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
19Programme-control systems
02electric
18Numerical control (NC), i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
406characterised by monitoring or safety
H02H 7/045 2006.01
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
7Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
04for transformers
045Differential protection of transformers
H01F 27/40 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
27Details of transformers or inductances, in general
40Structural association with built-in electric component, e.g. fuse
CPC
H01F 27/402
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
27Details of transformers or inductances, in general
40Structural association with built-in electric component, e.g. fuse
402Association of measuring or protective means
H02H 7/045
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
7Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
04for transformers
045Differential protection of transformers
H02M 2001/0012
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
1Details of apparatus for conversion
0003Details of control, feedback and regulation circuits
0012Control circuits using digital or numerical techniques
H02M 5/10
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
5Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
02without intermediate conversion into dc
04by static converters
10using transformers
Applicants
  • SIEMENS AKTIENGESELLSCHAFT [DE]/[DE]
Inventors
  • HECHT, Fabian
  • BRÜCKEL, Martin
  • ROSCA, Cornel-Marian
Priority Data
18208464.027.11.2018EP
Publication Language German (DE)
Filing Language German (DE)
Designated States
Title
(DE) VERFAHREN ZUR ÜBERWACHUNG EINES TRANSFORMATORS
(EN) METHOD FOR MONITORING A TRANSFORMER
(FR) PROCÉDÉ DE SURVEILLANCE D’UN TRANSFORMATEUR
Abstract
(DE)
Die Erfindung betrifft ein Verfahren zur Überwachung mindestens eines Transformators (10). Damit das Überwachungsverfahren möglichst einfach und zuverlässig durchführbar ist, werden folgende Schritte vorgeschlagen: Erzeugen eines objektspezifischen analytischen Modells des Transformators (10) und eines objektspezifischen Schwellwerts (Vth) aus historischen Sensordaten, welche mindestens eine EingangsSpannung und eine AusgangsSpannung des Transformators (10) umfassen, mit Hilfe eines Machine-Learning-Algorithmus, Vergleichen von aktuellen Sensordaten mit Werten aus dem objektspezifischen analytischen Modell, Kennzeichnen aktueller Sensordaten, welche um mehr als den objektspezifischen Schwellwert (Vth) von den Werten aus dem objektspezifischen analytischen Modell abweichen, als anormale Werte (34) und Ausgabe einer Warnung bei einer einstellbaren Anzahl von anormalen Werten (34).
(EN)
The invention relates to a method for monitoring at least one transformer (10). So that the monitoring method can be carried out as easily and reliably as possible, the following steps are proposed: generating an object-specific analytical model of the transformer (10) and an object-specific threshold value (Vth) from historical sensor data, including at least one input voltage and one output voltage of the transformer (10), using a machine learning algorithm; comparing current sensor data with values from the object-specific analytical model; characterising current sensor data that deviates from the values from the object-specific analytical model by more than the object-specific threshold value (Vth) as anomalous values (34); and outputting a warning in the event of an adjustable number of anomalous values (34).
(FR)
La présente invention concerne un procédé de surveillance d’au moins un transformateur (10). Pour que le procédé de surveillance puisse être exécuté le plus simplement et fiablement possible, ledit procédé comprend les étapes suivantes consistant à : générer un modèle, analytique spécifique objet, du transformateur (10) et une valeur seuil spécifique objet (Vth) à partir de données de capteur historiques, qui comportent au moins une tension d’entrée et une tension de sortie du transformateur (10), à l’aide d’un algorithme d’apprentissage automatique ; comparer des données de capteur actuelles à des valeurs provenant du modèle analytique spécifique objet ; marquer des données de capteur actuelles, qui s’écartent, de plus de la valeur seuil spécifique objet (Vth), des valeurs provenant du modèle analytique spécifique objet, en tant que valeurs anormales (34) ; et émettre un avertissement en cas d’un nombre définissable de valeurs anormales (34).
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