EP0917169A2 - Method for monitoring a tap changer - Google Patents
Method for monitoring a tap changer Download PDFInfo
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- EP0917169A2 EP0917169A2 EP98116787A EP98116787A EP0917169A2 EP 0917169 A2 EP0917169 A2 EP 0917169A2 EP 98116787 A EP98116787 A EP 98116787A EP 98116787 A EP98116787 A EP 98116787A EP 0917169 A2 EP0917169 A2 EP 0917169A2
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- European Patent Office
- Prior art keywords
- tap changer
- values
- torque
- motor drive
- monitoring
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000000034 method Methods 0.000 title claims abstract description 34
- 238000012544 monitoring process Methods 0.000 title claims abstract description 16
- 238000001514 detection method Methods 0.000 claims description 6
- 238000012423 maintenance Methods 0.000 claims description 4
- 239000012080 ambient air Substances 0.000 claims description 2
- 238000011156 evaluation Methods 0.000 claims description 2
- 230000003628 erosive effect Effects 0.000 claims 1
- 239000002689 soil Substances 0.000 claims 1
- 230000001960 triggered effect Effects 0.000 claims 1
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000010365 information processing Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/0005—Tap change devices
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/0015—Means for testing or for inspecting contacts, e.g. wear indicator
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/0005—Tap change devices
- H01H2009/0061—Monitoring tap change switching devices
Definitions
- pairs of values are then formed on the one hand from the respective positions during load switching, which can be graduated practically arbitrarily, that is, on the one hand, and on the other hand, the torque values determined at these positions.
- These determined pairs of values are compared with the previously saved, member-specific pairs of values, the target values and limit values. Depending on the result of this comparison, certain status messages are output. If the comparison shows a correspondence between the corresponding actual and target value pairs, an "ok" message is generated, which, however, can also be suppressed.
- the further inventive method described in claim 2 includes the same first process steps: Again, the rms values of current and voltage determined, and at the same time a position is determined, as has already been explained.
- This method assigns the corresponding torques over time, which in turn corresponds to the angle of rotation traveled during load switching.
- An actual torque value is generated at regular short time intervals, for example every 20 ms, and stored in a ring buffer.
- This is followed by synchronization using a synchronizing pulse.
- a synchronizing pulse is generated at the start of a particularly characteristic functional sequence during the switching sequence at a time t syn .
- the triggering of the energy accumulator which in turn triggers the sudden actuation of the diverter switch, can be used particularly advantageously for generating this synchronizing pulse.
- Measured value recording is thus carried out according to the principle of a transient recorder known per se. The advantages of this method will be explained in more detail below with reference to FIG. 2.
- the torque curve synchronized in this way is then broken down into characteristic parts, so-called windows.
- Each window corresponds to a characteristic part of the switching sequence that is taking place.
- Such windows can include, for example, the period of actuation of the preselector, the fine selector or the diverter switch.
- Each window is limited by two characteristic points in time that determine the start and end of the window: t 0 - t 1 ..., ..., t syn - t n .
- Each of these windows is compared with previously stored characteristic target values. This selective comparison method not only detects a deviation of the actual values from the target values of the torque and thus an error, but also an error that occurs can be assigned to a specific module that is causing it.
- Characteristic measured values are recorded during the switchover process, here current and voltage, from which information about the prevailing active current and thus the current torque is generated. Then there is a comparison with target values and evaluation of the comparison. As a result, information or messages are generated that can express different priorities. In the event of significant deviations from the respective setpoint, it may be necessary to switch off immediately, for example if the torque during the load changeover exceeds an absolute (extreme) setpoint that is still permissible. In the event of deviations in a non-critical area that do not immediately question safety, information can be output that recommend early maintenance, indicate an expected end of life or make other trend statements.
Landscapes
- Control Of Electric Motors In General (AREA)
- Protection Of Transformers (AREA)
- Keying Circuit Devices (AREA)
- Control Of Electrical Variables (AREA)
- Testing Relating To Insulation (AREA)
- Control Of Stepping Motors (AREA)
- Push-Button Switches (AREA)
- Control Of Ac Motors In General (AREA)
Abstract
Die Erfindung betrifft Verfahren zur Überwachung eines Stufenschalters. Dabei wird aus den gemessenen Effektivwerten von Strom und Spannung das Drehmoment der Antriebswelle, die vom zugeordneten Motorantrieb zum Stufenschalter führt, gemessen und mittels unterschiedlicher Verfahrensschritte, die näher dargestellt sind, mit entsprechend voreingestellten gerätetypischen Sollwerten verglichen. Je nach dem Ergebnis dieses Vergleiches werden Trendaussagen generiert oder es wird, bei gravierenden Abweichungen, ein sofortiges Abschalten des Motorantriebes erreicht. <IMAGE>The invention relates to methods for monitoring a tap changer. From the measured effective values of current and voltage, the torque of the drive shaft, which leads from the assigned motor drive to the tap changer, is measured and compared by means of different process steps, which are shown in more detail, with corresponding preset device-typical setpoints. Depending on the result of this comparison, trend statements are generated or, in the event of serious deviations, the motor drive is switched off immediately. <IMAGE>
Description
Die Erfindung betrifft Verfahren zur Überwachung eines Stufenschalters, der zur unterbrechungslosen Umschaltung zwischen Anzapfungen eines Stufentransformators dient.The invention relates to methods for monitoring a tap changer which uninterrupted switching between taps of a step transformer is used.
Es ist aus der DE-PS 42 14 431 bereits bekannt, daß der dem entsprechenden Stufenschalter zugeordnete Motorantrieb bestimmte Informationen liefert. Dies sind Informationen über die Stufenstellung, die jeweils aktuelle Stellung des Stufenschalters während eines Umschaltvorganges, über das Erreichen der jeweiligen oberen und unteren Endstellung, über die gewählte Betriebsart, die Auslösung des Motorschutzschalters usw. Diese Informationen sind jedoch nicht ausreichend, um den entsprechenden Stufenschalter auf Betriebsfähigkeit zu überwachen, d.h. Monitoringfunktionen abzuleiten.It is already known from DE-PS 42 14 431 that the corresponding tap changer assigned motor drive provides certain information. This is information about the Step position, the current position of the step switch during a Switching process, on reaching the respective upper and lower end position, on the selected operating mode, the triggering of the motor protection switch etc. However, this information is not sufficient to set the appropriate tap changer Monitor operability, i.e. Derive monitoring functions.
Weiterhin bekannt ist ein mikroprozessorgesteuerter Spannungsregler vom Typ TCS (s.a. Firmenprospekt der Maschinenfabrik Reinhausen GmbH: Mikroprozessorgesteuerter Spannungsregler TCS, Druckvermerk VK34/96 de - 0896/1000), der ebenfalls gewisse Überwachungsfunktionen realisiert, wie z.B.
- die Überwachung des Kreisblindstromes zwischen zwei parallel geschalteten Transformatoren
- die Realisierung der Überstromblockierung des Stufenschalters
- eine Unterspannungsüberwachung
- eine Überspannungsüberwachung mit Sicherheitsabschaltung
- ein Soll- und Istwertvergleich der geregelten Spannung.
- monitoring the circulating reactive current between two transformers connected in parallel
- the implementation of overcurrent blocking of the tap changer
- undervoltage monitoring
- overvoltage monitoring with safety shutdown
- a setpoint and actual value comparison of the regulated voltage.
Weiterhin ist es aus der japanischen Patentanmeldung JP-60-176213 A bereits bekannt, das Drehmoment der Antriebswelle, die vom Motorantrieb zum Stufenschalter führt, zu erfassen und zu speichern, um diesem tatsächlichen Drehmomentverlauf einen charakteristischen typenspezifischen Soll-Drehmomentverlauf gegenüber zu stellen. Ein ähnliches Verfahren ist später noch einmal im DDR-Patent DD 246 409 beschrieben; danach soll ebenfalls der zeitliche Drehmomentenverlauf bei einer Umschaltung gemessen und das Ergebnis mit dem für den jeweiligen Stufenschalter typischen zeitlichen Drehmomentenverlauf verglichen werden. Tritt hierbei eine unzulässige Abweichung des Ist-Verlaufes vom Soll-Verlauf auf, soll eine Abschaltung erfolgen. Wegen der schwierigen Erfassung der Drehmomente hat sich dieses Verfahren jedoch bisher nicht durchsetzen können. Furthermore, it is already known from Japanese patent application JP-60-176213 A that Torque of the drive shaft, which leads from the motor drive to the tap changer, and to store a characteristic of this actual torque curve to compare the type-specific target torque curve. A similar process is described again later in GDR patent DD 246 409; then the time should also Torque curve measured during a switchover and the result with that for the respective tap changer typical torque curve can be compared. Kick an inadmissible deviation of the actual course from the target course should, Shutdown. Because of the difficult acquisition of the torques this has So far, however, procedures have not been able to be enforced.
Schließlich ist auch bereits vorgeschlagen worden, das jeweilige Drehmoment nicht direkt mit mechanischen Meßmitteln, sondern indirekt durch Erfassung der Wirkleistung des das jeweilige Drehmoment erzeugenden Antriebsmotors zu ermitteln. Auch dies ist, soweit ersichtlich, bisher nicht realisiert worden.Finally, it has already been suggested that the respective torque should not be included mechanical measuring equipment, but indirectly by recording the active power of the respective Determine torque generating drive motor. As far as can be seen, this is also so far not been realized.
Aufgabe der Erfindung ist es, ein Verfahren zur Überwachung eines Stufenschalters anzugeben, das, ausgehend von einfach zu ermittelnden elektrischen Meßgrößen, eine zuverlässige Überwachung des Stufenschalters ermöglicht und berm Auftreten von detektierten Fehlfunktionen entsprechende Reaktionen auf diese Abweichung von der Norm gestattet.The object of the invention is to provide a method for monitoring a tap changer, that, based on easily determinable electrical parameters, is a reliable one Monitoring the tap changer enables and detected malfunctions to occur appropriate reactions to this deviation from the norm are permitted.
Diese Aufgabe wird durch die in den nebengeordneten Patentansprüchen 1 und 2 charakterisierten
erfindungsgemäßen Verfahren gelöst.
Beide Verfahren stehen als gleichwertige alternative Lösungen der gleichen Aufgabe zur
verfügung.
Die Unteransprüche betreffen besonders vorteilhafte Weiterbildungen der erfindungsgemäßen
Verfahren.This object is achieved by the method according to the invention characterized in the subordinate claims 1 and 2.
Both methods are available as equivalent alternative solutions to the same task.
The subclaims relate to particularly advantageous developments of the method according to the invention.
Diese erfindungsgemäßen Verfahren gestatten auf einfache Weise eine Überwachung des Stufenschalters während des gesamten Zeitraumes der Lastumschaltung, d.h. der Betätigung des angeschlossenen Motorantriebes. Es ist durch die erfindungsgemäßen Verfahren auf einfache Weise möglich, anhand der ermittelten Drehmomentverläufe jeweils bestimmte Teile dieser Drehmomentverläufe den entsprechenden Zeiträumen des Umschaltvorgangs zuzuordnen. Damit können Rückschlüsse über die Funktion der einzelnen Baugruppen des Stufenschalters, wie Vorwähler bzw. Wender, Feinwähler und Lastumschalter, getroffen werden, die bei jeder Lastumschaltung in einer bestimmten schaltertypischen Sequenz nacheinander betätigt werden.These methods according to the invention allow monitoring of the Step switch during the entire period of load switching, i.e. the actuation of the connected motor drive. It is simple by the inventive method Possible way, based on the determined torque curves, certain parts of each Assign torque curves to the corresponding periods of the switching process. In order to can draw conclusions about the function of the individual modules of the tap changer, such as Selector or turner, fine selector and diverter switch are made at each Load switching can be operated in succession in a specific switch-typical sequence.
Die Erfindungen sollen nachfolgend anhand von Figuren beispielhaft noch näher erläutert werden.The inventions are to be explained in more detail below with reference to figures.
Es zeigen:
Zunächst soll die Figur 1 näher erläutert werden.
Im demjeweiligen Stufenschalter zugeordneten Motorantrieb werden bei jeder Lastumschaltung
der Effektivwert des Stromes und der Spannung ermittelt, daraus wird auf an sich bekannte Weise
die Wirkleistung und daraus wiederum das entsprechende Drehmoment berechnet.
Gleichzeitig erfolgt eine Positionsbestimmung im Motorantrieb, d.h. es wird ermittelt, welcher
Bereich der Schaltsequenz gerade aktuell bei der Umschaltung durchlaufen wird. Daraus läßt sich
ableiten, in welcher aktuellen Position sich gerade die einzelnen Baugruppen, wie Vorwähler,
Wähler und Lastumschalter innerhalb der insgesamt zu durchlaufenden Schaltsequenz befinden.
Diese Positionserfassung erfolgt besonders vorteilhaft mittels eines Resolvers, der eine
kontinuierliche Erfassung gestattet.
Nach dem im Patentanspruch 1 beschriebenen ersten erfindungsgemäßen Verfahren werden
anschließend aus den jeweiligen Positionen während der Lastumschaltung, die praktisch beliebig
fein gestuft, d.h. gerastert werden können, einerseits und den bei diesen Positionen jeweils
ermittelten Drehmomentwerten andererseits Wertepaare gebildet.
Diese ermittelten Wertepaare werden mit vorab gespeicherten schaherspezifischen Wertepaaren,
den Sollwerten und Grenzwerten, verglichen.
Je nach dem Ergebnis dieses Vergleiches werden bestimmte Statusmeldungen ausgegeben. Ergibt
der Vergleich eine Übereinstimmung der jeweils korrespondierenden Ist- mit den Soll-Wertepaaren,
wird eine "o.k." -Meldung erzeugt, die jedoch auch unterdrückt werden kann.
Ergeben sich beim vorstehend beschriebenen Vergleich Abweichungen innerhalb gewisser,
voreingestellter Grenzen und/oder nur bei einer ebenfalls voreingestellten Zahl von Wertepaaren,
wird eine Meldung erzeugt, die auf eine fälligwerdende Wartung hinweist, ohne den normalen
Betrieb des Stufenschalters zu unterbrechen.
Ergeben sich Abweichungen, die über das eben beschriebene Maß hinausgehen, wird eine
Fehlermeldung erzeugt, die den Motorantrieb stillegt.First, Figure 1 will be explained in more detail.
In the motor drive assigned to the respective step switch, the effective value of the current and the voltage are determined each time the load is switched, from which the active power and the corresponding torque are calculated in a manner known per se.
At the same time, a position is determined in the motor drive, ie it is determined which area of the switching sequence is currently being run through during the switchover. From this it can be deduced in which current position the individual assemblies, such as preselector, selector and diverter switch, are within the overall switching sequence to be carried out. This position detection is carried out particularly advantageously by means of a resolver which permits continuous detection.
According to the first method according to the invention described in claim 1, pairs of values are then formed on the one hand from the respective positions during load switching, which can be graduated practically arbitrarily, that is, on the one hand, and on the other hand, the torque values determined at these positions.
These determined pairs of values are compared with the previously saved, member-specific pairs of values, the target values and limit values.
Depending on the result of this comparison, certain status messages are output. If the comparison shows a correspondence between the corresponding actual and target value pairs, an "ok" message is generated, which, however, can also be suppressed. If, in the comparison described above, deviations occur within certain, preset limits and / or only with a likewise preset number of value pairs, a message is generated which indicates that maintenance is due without interrupting the normal operation of the tap changer.
If there are deviations that go beyond the level just described, an error message is generated which stops the motor drive.
Das in Patentanspruch 2 beschriebene weitere erfindungsgemäße Verfahren beinhaltet dieselben ersten Verfahrensschritte: Auch hierbei werden die Effektivwerte von Strom und Spannung ermittelt, und es erfolgt gleichzeitig eine Positionsbestimmung, wie sie bereits erläutert wurde. The further inventive method described in claim 2 includes the same first process steps: Again, the rms values of current and voltage determined, and at the same time a position is determined, as has already been explained.
Anschließend erfolgt bei diesem Verfahren eine Zuordnung der entsprechenden
Drehmomente über die Zeit, die wiederum mit dem bei der Lastumschaltung zurückgelegten
Drehwinkel korrespondiert. Dabei wird ein Istwert des Drehmomentes in regelmäßigen
kurzen Zeitabständen, beispielsweise alle 20 ms, erzeugt und in einem Ringpuffer
abgespeichert. Anschließend erfolgt eine Synchronisation mittels eines Synchronimpulses.
Ein solcher Synchronimpuls wird auf dem Beginn eines besonders charakteristischen
Funktionsablaufes während der Umschaltsequenz zu einem Zeitpunkt t syn erzeugt. Besonders
vorteilhaft kann beispielsweise die Auslösung des Kraftspeichers, die wiederum die
sprungartige Betätigung des Lastumschalters auslöst, für die Erzeugung dieses
Synchronimpulses verwendet werden. Es erfolgt also eine Meßwertaufzeichnung nach dem an
sich bekannten Prinzip eines Transientrekorders.
Die Vorteile dieses Verfahrens sollen anhand der Figur 2 nachfolgend näher erläutert werden.
Figur 2a zeigt einen gemessenen Drehmomentverlauf während der Zeit t der Umschaltung
bzw. über den Weg s, den der Stufenschalter bei einer Umschaltung zurücklegt. Die
darunterliegende Figur 2b zeigt einen weiteren gemessenen Drehmomentenverlauf bei
entgegengesetztem Drehsinn der Antriebswelle, d.h. entgegengesetzter Schaltrichtung. Es ist
daraus zu erkennen, daß aufgrund von mechanischen Toleranzen im Getriebezug,
sogenannten Losmomenten und anderen Einflüssen sich, abhängig von der Drehrichtung,
unterschiedliche Zeiten nach dem Starten des Motorantriebes zum Zeitpunkt ts bis zum ersten
charakteristischen Punkt des Drehmomentverlaufes zu einem Zeitpunkt t o ergeben. Die
entsprechenden Verläufe wären also nicht ohne weiteres vergleichbar und müssen erst zeitlich
normiert werden. Eben dies geschieht durch die bereits erläuterte Synchronisation.
Anschließend wird bei diesem zweiten erfindungsgemäßen Verfahren der solcherart
synchronisierte Drehmomentverlauf in charakteristische Teile, sogenannte Fenster, zerlegt.
Dabei entspricht jedes Fenster einem charakteristischen Teil der jeweils ablaufenden
Umschaltsequenz. Solche Fenster können z.B. den Zeitraum der Betätigung des Vorwählers,
des Feinwählers oder auch des Lastumschalters umfassen. Jedes Fenster ist dabei jeweils
durch zwei charakteristische Zeitpunkte begrenzt, die Beginn und Ende des Fensters zeitlich
festlegen: t0 - t1...,...,tsyn - tn.
Jedes dieser Fenster wird mit vorab gespeicherten charakteristischen Sollwerten verglichen.
Durch diese selektive Vergleichsmethode läßt sich nicht nur ein Abweichen der Ist- von den
Sollwerten des Drehmomentes und damit ein Fehler detektieren, sondern es läßt sich auch ein
auftretender Fehler einer bestimmten Baugruppe, die ihn verursacht, zuordnen.
Neben der beschriebenen selektiven Fehlerdetektion wird gleichzeitig eine Trendanalyse der
mechanischen Komponenten ermöglicht.
Zusätzlich ist es natürlich bei beiden erfindungsgemäßen Verfahren auch möglich, einen
Maximalwert für das Drehmoment vorzugeben, bei dessen Überschreitung, unabhängig von
weiteren Kriterien, sofort eine Stillsetzung des Motorantriebes erfolgt. This method then assigns the corresponding torques over time, which in turn corresponds to the angle of rotation traveled during load switching. An actual torque value is generated at regular short time intervals, for example every 20 ms, and stored in a ring buffer. This is followed by synchronization using a synchronizing pulse. Such a synchronizing pulse is generated at the start of a particularly characteristic functional sequence during the switching sequence at a time t syn . For example, the triggering of the energy accumulator, which in turn triggers the sudden actuation of the diverter switch, can be used particularly advantageously for generating this synchronizing pulse. Measured value recording is thus carried out according to the principle of a transient recorder known per se.
The advantages of this method will be explained in more detail below with reference to FIG. 2. FIG. 2a shows a measured torque curve during the time t of the changeover or via the path s which the tap changer travels during a changeover. The figure 2b underneath shows a further measured torque curve with the drive shaft rotating in the opposite direction, ie the opposite switching direction. It can be seen from this that, due to mechanical tolerances in the gear train, so-called torques and other influences, depending on the direction of rotation, there are different times after starting the motor drive at time t s to the first characteristic point of the torque curve at a time t o . The corresponding courses would therefore not be easily comparable and must first be standardized over time. This is exactly what happens through the synchronization already explained.
In this second method according to the invention, the torque curve synchronized in this way is then broken down into characteristic parts, so-called windows. Each window corresponds to a characteristic part of the switching sequence that is taking place. Such windows can include, for example, the period of actuation of the preselector, the fine selector or the diverter switch. Each window is limited by two characteristic points in time that determine the start and end of the window: t 0 - t 1 ..., ..., t syn - t n .
Each of these windows is compared with previously stored characteristic target values. This selective comparison method not only detects a deviation of the actual values from the target values of the torque and thus an error, but also an error that occurs can be assigned to a specific module that is causing it.
In addition to the selective fault detection described, a trend analysis of the mechanical components is also made possible.
In addition, it is of course also possible in both methods according to the invention to specify a maximum value for the torque, if it is exceeded, regardless of other criteria, the motor drive is stopped immediately.
In Weiterbildung der Erfindung ist es möglich, in die erfindungsgemäßen Verfahren auch die Überwachung weiterer Größen zusätzlich einzubeziehen. In Figur 3 ist dies dargestellt; dabei werden zusätzlich zur beschriebenen Erfassung von Motorwirkleistung und damit Drehmoment einerseits und der Positionserfassung des Stufenschalters andererseits noch die gemessenen Temperaturen des Isoliermediums im Lastumschalter, des Transformatoröles, in dem sich üblicherweise auch der Wähler des Stufenschalters befindet, sowie der Umgebungsluft berücksichtigt. Weiterhin kann zusätzlich auch der Kontaktabbrand des Lastumschalters ermittelt und über ein Abbrandmodell zur Bestimmung des Betriebszustandes herangezogen werden.In a further development of the invention, it is also possible to use the method according to the invention Monitoring of other sizes should also be included. This is shown in FIG. 3; there are in addition to the described detection of motor active power and thus torque on the one hand and the position detection of the tap changer on the other hand the measured Temperatures of the insulating medium in the diverter switch, the transformer oil in which Usually the selector of the tap changer is located, as well as the ambient air considered. Furthermore, the contact wear of the diverter switch can also be determined and can be used to determine the operating state via a combustion model.
Das Wesen der erfindungsgemäßen Verfahren läßt sich anhand Figur 4 nochmals
zusammenfassen:
Es werden charakteristische Meßwerte während des Umschaltvorganges erfaßt, hier Strom und
Spannung, daraus wird eine Information über den jeweils herrschenden Wirkstrom und damit das
aktuelle Drehmoment erzeugt. Anschließend erfolgen Vergleich mit Sollgrößen und Auswertung
des Vergleiches. Im Ergebnis werden Informationen bzw. Meldungen erzeugt, die
unterschiedliche Priorität zum Ausdruck bringen können. Bei erheblichen Abweichungen vom
jeweiligen Sollwert kann ein sofortiges Abschalten erforderlich sein, z.B., wenn das Drehmoment
während der Lastumschaltung einen gerade noch zulässigen absoluten (extremen) Sollwert
übersteigt. Bei Abweichungen in einen unkritischen Bereich, die die Sicherheit nicht sofort in
Frage stellen, können Informationen ausgegeben werden, die eine baldige Wartung empfehlen, auf
ein zu erwartendes Lebensdauerende hinweisen oder andere Trendaussagen machen.The essence of the method according to the invention can be summarized again with the aid of FIG. 4:
Characteristic measured values are recorded during the switchover process, here current and voltage, from which information about the prevailing active current and thus the current torque is generated. Then there is a comparison with target values and evaluation of the comparison. As a result, information or messages are generated that can express different priorities. In the event of significant deviations from the respective setpoint, it may be necessary to switch off immediately, for example if the torque during the load changeover exceeds an absolute (extreme) setpoint that is still permissible. In the event of deviations in a non-critical area that do not immediately question safety, information can be output that recommend early maintenance, indicate an expected end of life or make other trend statements.
Claims (4)
gekennzeichnet durch folgende Verfahrensschritte:
characterized by the following process steps:
gekennzeichnet durch folgende Verfahrensschritte:
characterized by the following process steps:
dadurch gekennzeichnet,
daß die Positionserfassung kontinuierlich mittels eines Resolvers erfolgt.The method of claim 1 or 2,
characterized,
that the position detection is carried out continuously by means of a resolver.
dadurch gekennzeichnet,
daß weitere Meßgrößen, wie die Temperaturen des Lastumschalteröles, des umgebenden Transformatorenöles und der Umgebungsluft und/oder der Kontaktabbrand mechanischer Schaltkontakte zusätzlich in die Auswertung, d.h. den Sollwert-Istwertvergleich einbezogen werden.Method according to one of claims 1 to 3,
characterized,
that additional measured variables, such as the temperatures of the diverter switch oil, the surrounding transformer oil and the ambient air and / or the contact erosion of mechanical switch contacts, are also included in the evaluation, ie the comparison of the setpoint and actual values.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19744465 | 1997-10-08 | ||
DE19744465A DE19744465C1 (en) | 1997-10-08 | 1997-10-08 | Means for regulation of a multi-contact switch for tapped transformer |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0917169A2 true EP0917169A2 (en) | 1999-05-19 |
EP0917169A3 EP0917169A3 (en) | 2000-03-08 |
EP0917169B1 EP0917169B1 (en) | 2003-10-08 |
Family
ID=7844951
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98116787A Expired - Lifetime EP0917169B1 (en) | 1997-10-08 | 1998-09-05 | Method for monitoring a tap changer |
Country Status (17)
Country | Link |
---|---|
US (1) | US6124726A (en) |
EP (1) | EP0917169B1 (en) |
JP (1) | JPH11191998A (en) |
KR (1) | KR100546728B1 (en) |
CN (1) | CN1155027C (en) |
AT (1) | ATE251794T1 (en) |
BG (1) | BG63480B1 (en) |
BR (1) | BR9803833A (en) |
CA (1) | CA2249975C (en) |
CZ (1) | CZ323398A3 (en) |
DE (2) | DE19744465C1 (en) |
DK (1) | DK0917169T3 (en) |
ES (1) | ES2203861T3 (en) |
HK (1) | HK1021068A1 (en) |
HU (1) | HU223544B1 (en) |
RU (1) | RU2209500C2 (en) |
UA (1) | UA54420C2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1120801A2 (en) * | 2000-01-29 | 2001-08-01 | MASCHINENFABRIK REINHAUSEN GmbH | Method for monitoring wear of contacts of a step switch |
Families Citing this family (34)
Publication number | Priority date | Publication date | Assignee | Title |
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DE19720617C2 (en) * | 1997-05-16 | 1999-03-18 | Reinhausen Maschf Scheubeck | Position reporting arrangement for motor drives |
DE19907834C1 (en) * | 1999-02-24 | 2000-05-18 | Reinhausen Maschf Scheubeck | Monitoring method for step switches involves selecting characteristic motor torque values for identical times in two switching processes, and comparing corresponding switch torques with limits |
US7408275B2 (en) * | 2003-09-08 | 2008-08-05 | Cooper Technologies Company | Preventive maintenance tapping and duty cycle monitor for voltage regulator |
EP1664960A4 (en) * | 2003-09-08 | 2007-11-07 | Cooper Technologies Co | Preventive maintenance tapping and duty cycle monitor for voltage regulator |
US7319309B1 (en) | 2003-11-20 | 2008-01-15 | Cannon Technologies/Cooper Power | Load tap change monitoring system and method |
DE102004002173A1 (en) * | 2004-01-15 | 2005-08-04 | Abb Technology Ag | Method for testing a circuit breaker |
US7724152B2 (en) * | 2005-05-09 | 2010-05-25 | Mitsubishi Electric Corporation | Tap change operation monitoring apparatus for on-load tap charger |
US7444266B2 (en) * | 2006-03-21 | 2008-10-28 | Abb Technology Ltd. | Control system for a transformer or reactor |
DE102009014333A1 (en) * | 2009-03-21 | 2010-09-30 | A. Eberle Gmbh & Co. Kg | Device for monitoring tap changers |
EP2270454A1 (en) * | 2009-07-01 | 2011-01-05 | ABB Technology AG | Time of tap changer in the same contact position |
DE202009012198U1 (en) * | 2009-09-08 | 2010-02-11 | Maschinenfabrik Reinhausen Gmbh | Test drive for tap-changer |
US9041402B2 (en) * | 2009-12-08 | 2015-05-26 | Eht International Inc. | Detecting an abnormality of a switch in a high voltage electrical substation |
UA94521C2 (en) * | 2010-02-08 | 2011-05-10 | Виктор Владимирович Гребеников | Drive for a tap-changing under-load-device of a power transformer |
DE102010033195B3 (en) | 2010-08-03 | 2011-11-10 | Maschinenfabrik Reinhausen Gmbh | Method for monitoring a tap changer |
MX2013011088A (en) | 2011-03-27 | 2014-05-01 | Abb Technology Ag | Tap changer with an improved monitoring system. |
BR112013024908B1 (en) | 2011-03-27 | 2021-02-17 | Abb Schweiz Ag | on-load tap-changer to switch taps on a transformer winding |
DE102011104887A1 (en) | 2011-06-18 | 2012-12-20 | Maschinenfabrik Reinhausen Gmbh | Method for monitoring a tap changer |
DE102011112365B3 (en) | 2011-09-02 | 2012-12-27 | Maschinenfabrik Reinhausen Gmbh | Tap-changer with worm gear |
DE102011112748B3 (en) * | 2011-09-07 | 2012-12-27 | Maschinenfabrik Reinhausen Gmbh | Motor drive for actuating a tap changer |
EP2839490B1 (en) | 2012-04-16 | 2016-03-16 | Maschinenfabrik Reinhausen GmbH | Method for monitoring a step switch |
DE102012103736A1 (en) * | 2012-04-27 | 2013-10-31 | Maschinenfabrik Reinhausen Gmbh | Method for monitoring the operation of a tap changer |
USD772928S1 (en) | 2014-10-06 | 2016-11-29 | Vixlet LLC | Display screen with computer icons |
USD774085S1 (en) | 2014-10-06 | 2016-12-13 | Vixlet LLC | Computer display with icons |
USD772929S1 (en) | 2014-10-06 | 2016-11-29 | Vixlet LLC | Display screen with icons |
USD772288S1 (en) | 2014-10-06 | 2016-11-22 | Vixlet LLC | Display screen with computer icons |
USD774086S1 (en) | 2014-10-06 | 2016-12-13 | Vixlet LLC | Display screen with computer icon |
USD775198S1 (en) | 2014-10-06 | 2016-12-27 | Vixlet LLC | Display screen with icons |
WO2018120143A1 (en) | 2016-12-30 | 2018-07-05 | Abb Schweiz Ag | On-load tap changer and manufacturing method thereof |
DE102017108869A1 (en) | 2017-04-26 | 2018-10-31 | HELLA GmbH & Co. KGaA | A method of error detection in a switch assembly, apparatus, computer program product and computer readable medium |
CN109458717B (en) * | 2017-12-20 | 2020-08-07 | 国网浙江省电力公司嘉兴供电公司 | Intelligent control device and control method for air conditioner |
CN112136195B (en) * | 2018-06-19 | 2023-06-09 | 株式会社东芝 | Electric operating device for tap changer and tap changing method |
RU2684405C1 (en) * | 2018-06-25 | 2019-04-09 | Российская Федерация, от имени которой выступает Государственная корпорация по атомной энергии "Росатом" | Control device for switch |
JP7021393B2 (en) * | 2019-03-01 | 2022-02-16 | 株式会社東芝 | Electric operation device for tap changer and tap changer method |
RU2754357C1 (en) * | 2021-03-11 | 2021-09-01 | Российская Федерация, от имени которой выступает Государственная корпорация по атомной энергии "Росатом" (Госкорпорация "Росатом") | Control device for the switch |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60176213A (en) * | 1984-02-23 | 1985-09-10 | Toshiba Corp | On-load tap changer |
DD246409A1 (en) * | 1986-01-17 | 1987-06-03 | Liebknecht Transformat | PROCESS FOR PROTECTION OF STAGE SWITCHES AGAINST MECHANICAL OVERLOAD |
DE4214431A1 (en) * | 1992-04-30 | 1993-11-11 | Reinhausen Maschf Scheubeck | Motor drive for tap changers |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE246409C (en) * | ||||
US3515980A (en) * | 1968-07-05 | 1970-06-02 | Westinghouse Electric Corp | Tap changer with voltage and current responsive protective means |
US3602807A (en) * | 1970-04-16 | 1971-08-31 | Westinghouse Electric Corp | Load tap changer apparatus with magnetic transducer protective circuitry |
US4090225A (en) * | 1977-01-21 | 1978-05-16 | Mcgraw-Edison Company | Fail-safe circuit for tap-changing transformer regulating system |
JPH01107620A (en) * | 1987-10-20 | 1989-04-25 | Toshiba Corp | On-load tap changer |
JPH081862B2 (en) * | 1989-04-24 | 1996-01-10 | 株式会社東芝 | Automatic monitoring device for tap switching device under load |
JPH09213542A (en) * | 1996-02-02 | 1997-08-15 | Toshiba Corp | State monitoring device for on-load tap changer |
DE19746574C1 (en) * | 1997-10-22 | 1999-02-04 | Reinhausen Maschf Scheubeck | Method of functional monitoring of step switches |
-
1997
- 1997-10-08 DE DE19744465A patent/DE19744465C1/en not_active Expired - Fee Related
-
1998
- 1998-09-05 DE DE59809856T patent/DE59809856D1/en not_active Expired - Lifetime
- 1998-09-05 AT AT98116787T patent/ATE251794T1/en active
- 1998-09-05 ES ES98116787T patent/ES2203861T3/en not_active Expired - Lifetime
- 1998-09-05 DK DK98116787T patent/DK0917169T3/en active
- 1998-09-05 EP EP98116787A patent/EP0917169B1/en not_active Expired - Lifetime
- 1998-09-15 BG BG102768A patent/BG63480B1/en unknown
- 1998-10-02 KR KR1019980041577A patent/KR100546728B1/en not_active IP Right Cessation
- 1998-10-05 HU HU9802216A patent/HU223544B1/en not_active IP Right Cessation
- 1998-10-06 JP JP10284285A patent/JPH11191998A/en not_active Withdrawn
- 1998-10-06 UA UA98105268A patent/UA54420C2/en unknown
- 1998-10-07 US US09/168,008 patent/US6124726A/en not_active Expired - Lifetime
- 1998-10-07 CZ CZ983233A patent/CZ323398A3/en unknown
- 1998-10-07 CA CA002249975A patent/CA2249975C/en not_active Expired - Fee Related
- 1998-10-07 RU RU98118346/09A patent/RU2209500C2/en not_active IP Right Cessation
- 1998-10-08 BR BR9803833-8A patent/BR9803833A/en not_active Application Discontinuation
- 1998-10-08 CN CNB981197922A patent/CN1155027C/en not_active Expired - Fee Related
-
1999
- 1999-11-19 HK HK99105372A patent/HK1021068A1/en not_active IP Right Cessation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60176213A (en) * | 1984-02-23 | 1985-09-10 | Toshiba Corp | On-load tap changer |
DD246409A1 (en) * | 1986-01-17 | 1987-06-03 | Liebknecht Transformat | PROCESS FOR PROTECTION OF STAGE SWITCHES AGAINST MECHANICAL OVERLOAD |
DE4214431A1 (en) * | 1992-04-30 | 1993-11-11 | Reinhausen Maschf Scheubeck | Motor drive for tap changers |
Non-Patent Citations (1)
Title |
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PATENT ABSTRACTS OF JAPAN vol. 010, no. 011 (E-374), 17. Januar 1986 (1986-01-17) & JP 60 176213 A (TOSHIBA KK), 10. September 1985 (1985-09-10) * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1120801A2 (en) * | 2000-01-29 | 2001-08-01 | MASCHINENFABRIK REINHAUSEN GmbH | Method for monitoring wear of contacts of a step switch |
EP1120801A3 (en) * | 2000-01-29 | 2003-01-29 | MASCHINENFABRIK REINHAUSEN GmbH | Method for monitoring wear of contacts of a step switch |
Also Published As
Publication number | Publication date |
---|---|
KR19990036823A (en) | 1999-05-25 |
CZ323398A3 (en) | 1999-04-14 |
HU223544B1 (en) | 2004-09-28 |
CN1155027C (en) | 2004-06-23 |
DE59809856D1 (en) | 2003-11-13 |
BG102768A (en) | 1999-04-30 |
HK1021068A1 (en) | 2000-05-26 |
BG63480B1 (en) | 2002-02-28 |
BR9803833A (en) | 1999-12-28 |
HU9802216D0 (en) | 1998-12-28 |
CA2249975C (en) | 2007-01-09 |
HUP9802216A2 (en) | 1999-05-28 |
DE19744465C1 (en) | 1999-03-11 |
US6124726A (en) | 2000-09-26 |
CN1215215A (en) | 1999-04-28 |
UA54420C2 (en) | 2003-03-17 |
EP0917169A3 (en) | 2000-03-08 |
EP0917169B1 (en) | 2003-10-08 |
CA2249975A1 (en) | 1999-04-08 |
HUP9802216A3 (en) | 2001-01-29 |
ATE251794T1 (en) | 2003-10-15 |
JPH11191998A (en) | 1999-07-13 |
DK0917169T3 (en) | 2004-02-16 |
RU2209500C2 (en) | 2003-07-27 |
KR100546728B1 (en) | 2006-05-09 |
ES2203861T3 (en) | 2004-04-16 |
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