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EP1465221B1 - Agencement pour la surveillance d'un sélecteur de prises - Google Patents

Agencement pour la surveillance d'un sélecteur de prises Download PDF

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Publication number
EP1465221B1
EP1465221B1 EP04003100A EP04003100A EP1465221B1 EP 1465221 B1 EP1465221 B1 EP 1465221B1 EP 04003100 A EP04003100 A EP 04003100A EP 04003100 A EP04003100 A EP 04003100A EP 1465221 B1 EP1465221 B1 EP 1465221B1
Authority
EP
European Patent Office
Prior art keywords
monitoring
sensor
changer
tap changer
aow
Prior art date
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.)
Expired - Lifetime
Application number
EP04003100A
Other languages
German (de)
English (en)
Other versions
EP1465221A1 (fr
Inventor
Dieter Dr. Dohnal
Karsten Dr. Viereck
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Maschinenfabrik Reinhausen GmbH
Scheubeck GmbH and Co
Original Assignee
Maschinenfabrik Reinhausen GmbH
Maschinenfabrik Reinhausen Gebrueder Scheubeck GmbH and Co KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Maschinenfabrik Reinhausen GmbH, Maschinenfabrik Reinhausen Gebrueder Scheubeck GmbH and Co KG filed Critical Maschinenfabrik Reinhausen GmbH
Publication of EP1465221A1 publication Critical patent/EP1465221A1/fr
Application granted granted Critical
Publication of EP1465221B1 publication Critical patent/EP1465221B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H01H9/16—Indicators for switching condition, e.g. "on" or "off"
    • H01H9/168—Indicators for switching condition, e.g. "on" or "off" making use of an electromagnetic wave communication
    • 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

  • the invention relates to a monitoring system for tap changers, in which the load switching takes place in each phase to be switched by means of at least one vacuum interrupter.
  • a monitoring and safety system - in analogy to monitoring mechanical contacts under oil - in many cases be useful, which ensures that in case of failure, if a vacuum interrupter when switching to If another stage does not open in time or does not open at all and the taps can not be changed without power, an actuation becomes impossible.
  • a non-opening vacuum interrupter there is strong arcing on the mechanical contacts, resulting in increased burnup of these contacts.
  • faults in the on-load tap-changer may occur, but in any case a critical operating state which should be avoided.
  • the mentioned DE 40 09 038 A1 describes such a monitoring system, which has become known as "monitoring system", for tap changer of the reactor switch type.
  • a current transformer is in each case arranged in the power supply of each vacuum interrupter, which supplies an output voltage for a respective transmitting diode (LED) of an optical waveguide.
  • the current transformers report via the respective optical waveguides, at the end of which light receivers are located, whether or not there is a current flow in the respective branch.
  • certain control times are provided.
  • the object of the invention is therefore to avoid the disadvantages of the known monitoring system and to provide such a generic system that allows a non-contact monitoring of the respective vacuum interrupter from the outside.
  • the surface acoustic wave used in this invention (A kustician O bermati w Ellen-) sensors, as a SAW (S urface A Custic W ave) sensors referred to, are known per se. So far, however, the proposal has not yet been made or attempted to use it appropriately on tap changers.
  • Known SAW sensors usually consist of a LiNbO 3 substrate, which is arranged in a metal or ceramic housing, as used for integrated circuits. Such a sensor can be wirelessly read by radio; the propagation losses on the AOW sensor are extremely low, and the sensor does not require a power supply for signal processing.
  • an interrogation unit is required for the radio interrogation.
  • An oscillator of this interrogation unit radiates high-frequency pulses in the frequency range between 100 MHz and 3 GHz via an antenna.
  • the AOW sensor itself contains an interdigital transducer connected to an antenna and, in many cases, several reflectors.
  • the interdigital transducer usually comb-shaped, is excited by the received high-frequency electromagnetic pulse, and a surface acoustic wave is generated via the piezoelectric effect. This surface wave is partially reflected at the reflectors so that it again reaches the interdigital transducer. There, it is reconverted and radiated via the antenna of the AOW sensor and can be received by the interrogation unit.
  • the pulse train emitted by the AOW sensor which is received by the interrogation unit, initially contains, as information, a specific specific bit pattern of the sensor which serves to identify it.
  • a single interrogation unit can thus receive the information from a plurality of different AOW sensors and assign it to the individual sensors.
  • a change in a relevant physical quantity at the sensor leads to a change in the speed of the described surface wave propagating on the sensor or also to a change in the geometric distance of the reflectors. This results in a change in the pulse duration, which is detected and evaluated in the interrogator and allows conclusions about the corresponding physical variable or its change in the environment of the respective AOW sensor.
  • Such an AOW sensor is described in detail in WO 96/33423 of SIEMENS AG.
  • FIG. 1 shows the schematic structure of a monitoring device according to the invention.
  • the oil vessel 1 of a tap changer is indicated, in which there are three vacuum interrupters V1 ... V3 - for each phase U, V, W a vacuum interrupter is provided in this example.
  • the invention is not limited to such an arrangement; the monitoring device according to the invention is suitable for any electrical circuit of tap changers with any number of such vacuum interrupters per phase. It should be checked at certain times, the status of the vacuum interrupters V1 ... V3, d. H. to determine if they have actually opened. If this is not the case in the event of a fault, a current flows in the corresponding branch.
  • an AOW sensor S1... S3 is provided in the region of each vacuum interrupter.
  • These SAW sensors do not require a separate power supply, as discussed above.
  • a query unit 2 which has an oscillator and an antenna.
  • the oscillator emits high-frequency pulses through the antenna towards the SAW sensors S1 ... S3.
  • they produce a surface acoustic wave which, after having been reflected by the reflectors within the respective sensor, is radiated back again and received by the interrogation unit 2.
  • the high-frequency radiation emitted by the scanning unit 2 is indicated by a dashed line. The radiation transmitted back from the individual SAW sensors S1...
  • S3 is shown in each case by dotted lines; the different puncturing is intended to indicate the specific bit pattern that allows the interrogation unit 2 a sensor-specific assignment. If a current flows through the respective branch in the event of a fault in which one of the vacuum interrupters is not opened at the corresponding interrogation time, the electromagnetic field in the respective conductor influences the speed of the surface wave propagating on the respective sensor and leads to a change in the pulse transit time. This changed pulse transit time of the signal emitted by the corresponding sensor is detected by the interrogation unit 2, assigned as error information to the respective sensor and given as information to the monitoring unit 3 known from the prior art.
  • a detection logic # 1 which is a system error of the monitoring system detects
  • a recognition logic # 2 which detects a possible failure of a vacuum interrupter V1 ... V3.
  • indications K1... K3 will always signal a malfunction of the corresponding vacuum interrupter V1... V3 if, at the time of checking, when all vacuum interrupters are open, current flow is reported in this phase.
  • Another display K4 gives a signal if there is a system error.
  • the invention thus no longer requires any connection by means of optical fibers or other transmission media from the interior of the tap changer to the outside.
  • the interrogation unit 2 and the monitoring unit 3 can rather be arranged outside of the tap changer 1, for example in the region of the motor drive or elsewhere.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Measuring Fluid Pressure (AREA)
  • Burglar Alarm Systems (AREA)
  • Connector Housings Or Holding Contact Members (AREA)
  • Housings And Mounting Of Transformers (AREA)
  • Devices For Checking Fares Or Tickets At Control Points (AREA)
  • Testing Electric Properties And Detecting Electric Faults (AREA)

Claims (1)

  1. Revendication pour un système de surveillance destiné à la saisie du flux de courant sur un changeur de prises fonctionnant avec des tubes commutateur à vide pour la commutation de charge,
    caractérisé en ce que
    dans chaque phase à commuter du changeur de prises, dans la zone de chaque tube commutateur à vide (V1,..., V3) un capteur SAW pour lecture à distance (S1,..., S3) est respectivement agencé pour la mesure sans contact de l'intensité de courant,
    il est prévu en dehors du changeur de prises, pour les capteurs SAW (S1,...S3), un poste d'interrogation-réponse (2) qui est en mesure aussi bien d'émettre que de recevoir un rayonnement à haute fréquence et
    le poste d'interrogation-réponse (2) se trouve en connexion électrique avec une unité de surveillance (3).
EP04003100A 2003-04-03 2004-02-12 Agencement pour la surveillance d'un sélecteur de prises Expired - Lifetime EP1465221B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10315205 2003-04-03
DE10315205 2003-04-03

Publications (2)

Publication Number Publication Date
EP1465221A1 EP1465221A1 (fr) 2004-10-06
EP1465221B1 true EP1465221B1 (fr) 2006-10-04

Family

ID=32842236

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04003100A Expired - Lifetime EP1465221B1 (fr) 2003-04-03 2004-02-12 Agencement pour la surveillance d'un sélecteur de prises

Country Status (4)

Country Link
US (1) US6965217B2 (fr)
EP (1) EP1465221B1 (fr)
AT (1) ATE341826T1 (fr)
DE (1) DE502004001631D1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004053611A1 (de) * 2004-11-02 2006-05-04 Siemens Ag Verfahren sowie Vorrichtung zur Ermittlung der Position von elektrischen Leiterelementen einer Elektroenergieübertragungseinrichtung
US7343804B2 (en) * 2005-11-14 2008-03-18 Honeywell International Inc. Wireless acoustic wave sensor system for use in vehicle applications
US7444266B2 (en) * 2006-03-21 2008-10-28 Abb Technology Ltd. Control system for a transformer or reactor
US8643221B2 (en) 2010-06-08 2014-02-04 Siemens Energy, Inc. Retrofit kit, circuitry and method for reconfiguring a tap changer to avoid electrical arcing
DE102010036287A1 (de) * 2010-08-27 2012-03-01 Siemens Aktiengesellschaft Verfahren zur Abfrage eines Datenpunkts eines Schalters
EP2691967B1 (fr) 2011-03-27 2017-03-01 ABB Technology AG Sélecteur à gradins avec un système d'entraînement amélioré
WO2012135213A1 (fr) 2011-03-27 2012-10-04 Abb Technology Ag Changeur de prises à système d'entraînement amélioré
DE102012103263A1 (de) * 2012-04-16 2013-10-17 Maschinenfabrik Reinhausen Gmbh Verfahren und System zur Untersuchung einer Anzapfungswechseleinrichtung eines Transformators

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE716489C (de) 1933-12-13 1942-01-21 Siemens Ag Verfahren zur Regelung der Blindleistung in einem Wechselrichterstromkreis
US4434388A (en) * 1981-09-03 1984-02-28 Carver Leroy J Electrical lighting controller
DE4009038A1 (de) * 1990-03-21 1991-09-26 Reinhausen Maschf Scheubeck Verfahren und anordnung fuer ein ueberwachungssystem fuer stufenschalter von stufentransformatoren
DE9420199U1 (de) * 1994-12-07 1995-02-09 Siemens AG, 80333 München Metallgekapselte Hochspannungsschaltanlage
US6084503A (en) 1995-04-18 2000-07-04 Siemens Aktiengesellschaft Radio-interrogated surface-wave technology sensor
DE19546215C1 (de) * 1995-12-01 1997-04-17 Siemens Ag Schaltstellungsanzeigesystem
DE19603461C2 (de) * 1996-01-31 1997-12-18 Siemens Ag Verfahren zur Stellungserfassung eines Schaltgeräts sowie gekapselte Schaltanlage mit einer Einrichtung hierzu

Also Published As

Publication number Publication date
US20040196010A1 (en) 2004-10-07
US6965217B2 (en) 2005-11-15
EP1465221A1 (fr) 2004-10-06
ATE341826T1 (de) 2006-10-15
DE502004001631D1 (de) 2006-11-16

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