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1. WO2011023296 - MONITORING SYSTEM FOR POWER TRANSFORMERS AND MONITORING METHOD

Publication Number WO/2011/023296
Publication Date 03.03.2011
International Application No. PCT/EP2010/004908
International Filing Date 11.08.2010
IPC
G01R 31/12 2006.01
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
31Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
12Testing dielectric strength or breakdown voltage
G01R 31/14 2006.01
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
31Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
12Testing dielectric strength or breakdown voltage
14Circuits therefor
CPC
G01R 31/1227
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
31Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
12Testing dielectric strength or breakdown voltage ; ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
1227of components, parts or materials
G01R 31/14
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
31Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
12Testing dielectric strength or breakdown voltage ; ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
14Circuits therefor ; , e.g. for generating test voltages, sensing circuits
G01R 31/50
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
31Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
50Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
Applicants
  • ABB TECHNOLOGY AG [CH]/[CH] (AllExceptUS)
  • WERLE, Peter [DE]/[DE] (UsOnly)
  • SZCZECHOWSKI, Janusz [PL]/[DE] (UsOnly)
  • KOCH, Norbert [DE]/[CH] (UsOnly)
Inventors
  • WERLE, Peter
  • SZCZECHOWSKI, Janusz
  • KOCH, Norbert
Agents
  • PARTNER, Lothar
Priority Data
09010847.325.08.2009EP
Publication Language German (DE)
Filing Language German (DE)
Designated States
Title
(DE) ÜBERWACHUNGSSYSTEM FÜR LEISTUNGSTRANSFORMATOREN UND ÜBERWACHUNGSVERFAHREN
(EN) MONITORING SYSTEM FOR POWER TRANSFORMERS AND MONITORING METHOD
(FR) SYSTÈME DE SURVEILLANCE POUR DES TRANSFORMATEURS DE PUISSANCE ET PROCÉDÉ DE SURVEILLANCE
Abstract
(DE)
Die Erfindung betrifft ein Überwachungssystem für Leistungstransformatoren (12) mit wenigstens einer Messvorrichtung (58) zur kontinuierlichen Erfassung eines Spannungssignals (U'(t), U1 '(t), U2'(t), U3'(t), 100, 110), welche in einer Durchführung (14, 16, 18, 50) des Leistungstransformators (12) integriert ist, und mit wenigstens einer Auswertevorrichtung (20, 78, 94) zur Analyse wenigstens des Spannungssignals (U'(t), U1 '(t), U2'(t), U3'(t), 100, 110). Die Auswertevorrichtung (20, 78, 94) weist wenigstens eine erste (22, E1, E3, E5) und eine zweite (24, E2, E4, E6) unabhängige Erfassungsvorrichtung für das dieser über wenigstens eine Verbindungsleitung (26, 72, 74, 76) jeweils zugeführte Spannungssignal (U'(t), U1 '(t), U2'(t), U3'(t), 100, 110) auf. Wenigstens eine erste Teilauswertevorrichtung (30, T1, T3, T5) für eine Spannungssignalanalyse in einem ersten Frequenzbereich ist mit der ersten Erfassungsvorrichtung (22, E1, E3, E5) verbunden und wenigstens eine zweite Teilauswertevorrichtung (32, T2, T4, T6) für eine Spannungssignalanalyse in einem zweiten Frequenzbereich ist mit der zweiten Erfassungsvorrichtung (24, E2, E4, E6) verbunden. In der Verbindungsleitung (26, 72, 74, 76) ist wenigstens eine Abzweigung (28) mit nachgeschaltetem Analogfilter (46, 48, F1, F2, F3, F4, F5, F6) vorgesehen, welcher das jeweilige Frequenzband des der jeweiligen Erfassungsvorrichtung (22, 24, E1, E2, E3, E4, E5, E6) zugeführten Spannungssignals (U'(t), U1 '(t), U2'(t), U3'(t), 100, 110) individuell begrenzt.
(EN)
The invention relates to a monitoring system for power transformers (12), comprising at least one measuring device (58) for continuously detecting a voltage signal (U'(t), U1'(t), U2'(t), U3'(t), 100, 110), integrated in a passage (14, 16, 18, 50) of the power transformer (12), and comprising at least one evaluation device (20, 78, 94) for analyzing at least the voltage signal (U'(t), U1'(t), U2'(t), U3'(t), 100, 110). The evaluation device (20, 78, 94) is provided with at least one first (22, E1, E3, E5) and one second (24, E2, E4, E6) independent detection device for the voltage signal (U'(t), U1'(t), U2'(t), U3'(t), 100, 110), respectively supplied by means of at least one connecting line (26, 72, 74, 76). At least one first partial evaluation device (30, T1, T3, T5) for a voltage signal analysis in a first frequency range is connected to the first detection device (22, E1, E3, E5), and at least one second partial evaluation device (32, T2, T4, T6) for a voltage signal analysis in a second frequency range is connected to the second detection device (24, E2, E4, E6). The connecting line (26, 72, 74, 76) is provided with at least one branch connection (28) having a downstream analogue filter (46, 48, F1, F2, F3, F4, F5, F6), which individually limits the respective frequency band of the voltage signal (U'(t), U1'(t), U2'(t), U3'(t), 100, 110) supplied to the respective detection device (22, 24, E1, E2, E3, E4, E5, E6).
(FR)
L'invention concerne un système de surveillance pour des transformateurs de puissance (12). Le système présente au moins un dispositif de mesure (58) permettant de détecter en permanence un signal de tension (U'(t), U1'(t), U2'(t), U3'(t), 100, 110) qui est intégré dans une traversée (14, 16, 18, 50) du transformateur de puissance (12), ainsi qu'au moins un dispositif d'évaluation (20, 78, 94) permettant d'analyser au moins le signal de tension (U'(t), U1'(t), U2'(t), U3'(t), 100, 110). Le dispositif d'évaluation (20, 78, 94) comporte au moins un premier (22, E1, E3, E5) et un second (24, E2, E4, E6) dispositif de détection indépendant pour le signal de tension (U'(t), U1'(t), U2'(t), U3'(t), 100, 110) amené respectivement à ces derniers par l'intermédiaire d'au moins une ligne de connexion (26, 72, 74, 76). Au moins un premier dispositif d'évaluation partielle (30, T1, T3, T5) permettant d'analyser un signal de tension dans une première plage de fréquences est relié au premier dispositif de détection (22, E1, E3, E5) et au moins un second dispositif d'évaluation partielle (32, T2, T4, T6) permettant d'analyser un signal de tension dans une seconde plage de fréquences est relié au second dispositif de détection (24, E2, E4, E6). La ligne de connexion (26, 72, 74, 76) présente au moins une branche (28) dotée d'un filtre analogique monté en aval (46, 48, F1, F2, F3, F4, F5, F6) qui limite individuellement la bande de fréquences respective du signal de tension (U'(t), U1'(t), U2'(t), U3'(t), 100, 110) amené au dispositif de détection respectif (22, 24, E1, E2, E3, E4, E5, E6).
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