WO1992010845A1 - Circuits et recepteur de valeurs de mesure pour la detection et la mesure de sources de lumiere - Google Patents

Circuits et recepteur de valeurs de mesure pour la detection et la mesure de sources de lumiere Download PDF

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Publication number
WO1992010845A1
WO1992010845A1 PCT/AT1991/000124 AT9100124W WO9210845A1 WO 1992010845 A1 WO1992010845 A1 WO 1992010845A1 AT 9100124 W AT9100124 W AT 9100124W WO 9210845 A1 WO9210845 A1 WO 9210845A1
Authority
WO
WIPO (PCT)
Prior art keywords
optical
optical waveguide
conductor end
measuring
light
Prior art date
Application number
PCT/AT1991/000124
Other languages
German (de)
English (en)
Inventor
Reinhard GÖS
Gerhard Ludwar
Original Assignee
Elin Energieversorgung Gesellschaft M.B.H.
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 Elin Energieversorgung Gesellschaft M.B.H. filed Critical Elin Energieversorgung Gesellschaft M.B.H.
Publication of WO1992010845A1 publication Critical patent/WO1992010845A1/fr

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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
    • H01H9/50—Means for detecting the presence of an arc or discharge
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/26—Means for detecting the presence of an arc or other discharge
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H1/00—Details of emergency protective circuit arrangements
    • H02H1/0007—Details of emergency protective circuit arrangements concerning the detecting means
    • H02H1/0015—Using arc detectors
    • H02H1/0023—Using arc detectors sensing non electrical parameters, e.g. by optical, pneumatic, thermal or sonic sensors

Definitions

  • the invention relates to a circuit arrangement and a measured value receiver for detecting and measuring light sources, preferably arcs in switching devices such as load switches of tap changers and. like.
  • Diverter switches for regulating transformers are usually arranged in a cylindrical diverter switch oil tank, which is housed in a transformer tank.
  • the diverter switch oil tank is sealed off from the transformer tank to prevent contaminated diverter switch oil from affecting the insulating strength of the transformer oil.
  • a protective relay is installed in the pipeline between the drive head cover and the old expansion vessel. This protection relay, which should be located as close as possible to the drive head cover, responds to impermissible errors that occur in the event of a fault
  • an inadmissible arc occurs in the diverter switch oil tank and, as a result, a corresponding increase in the volume of the oil and thus an oil flow or pressure wave.
  • a built-in damper in the trigger relay is tilted, which triggers a trigger switch coupled to this damper, which then switches off the transformer.
  • This surveillance system has several serious weaknesses.
  • Tripping relay and the Oldehngefäß is relatively large. It also often happens that this pipeline must be laid with several bends for structural reasons. In both cases mentioned, the protective relay often does not respond even in the event of an impermissible overload or other serious errors on the diverter switch.
  • EP-A1 0 191 398 also discloses a built-in tap changer in which a separate old vessel is arranged just above the tap changer head and is connected to the tap changer head by means of a short pipe socket.
  • This pipe socket opens into a channel arranged vertically in the vessel, the upper end of which has a pressure relief device. This channel is below the minimum
  • Oil level of the oil expansion vessel a basically horizontal oil flow line connected, which opens into the actual oil expansion volume of the oil expansion vessel.
  • the oil flow line contains an oil flow relay which, if necessary, causes the transformer to be switched off.
  • This system also has the disadvantage that erroneous shutdowns of the transformer are triggered by the sudden escape of switching gases accumulating during normal operation.
  • the object of the invention is therefore to provide a monitoring system with which the deficiencies of conventional monitoring systems are excluded and which immediately reacts to corresponding measured values and forwards them.
  • the object is achieved by the invention.
  • This is characterized in that an optical measuring and test loop consisting of a first and a second optical waveguide is provided, and that a selider continuously or periodically emits light into the first conductor end of the first optical waveguide via an electro-optical converter during the measuring time, and that the second conductor end of the second optical waveguide is connected to a measuring device via an opto-electrical converter and a measuring amplifier, and that the second conductor end of the first optical waveguide and the first conductor end of the second optical waveguide are connected to an optical measured value receiver for one-way optical light transmission, the measured value receiver is located directly at the measuring point.
  • the transmitter continuously or periodically emits light into the measuring and test loop during the entire measuring time, function monitoring is possible at any time, which ensures that a triggering mechanism connected to the circuit arrangement according to the invention responds reliably.
  • Another advantage is that when using optical fibers, no potential difficulties arise even when monitoring high-voltage devices.
  • a measured value receiver for integration into the circuit arrangement, the second conductor end of a first optical waveguide and the first conductor end of a second optical waveguide being inserted into a cylindrical sleeve, preferably a plexiglass tube, with the corresponding length of the respective optical waveguide jacket, and that The inside of the sleeve is glued to the optical waveguide sheaths, and that the second conductor end of the first optical waveguide and the first conductor end of the second optical waveguide are spaced apart from one another common longitudinal axis are arranged, and that the end faces of the conductor ends are designed as optical lenses.
  • the advantage of this measured value receiver is that the light occurring at the measuring point can be coupled into the measured value receiver with little loss.
  • a filter is placed in front of the end face of the second conductor end of the first optical waveguide, which filter is transparent to the light radiated by the transmitter and highly reflective to the injected light. This prevents part of the light radiated at the measuring parts from flowing to the optical transmitter. In this way, the measuring accuracy of the
  • a further embodiment of the measured value receiver according to the invention consists in that a quartz glass tube is pushed over the sleeves made of plexiglass.
  • This training prevents arcing faults from damaging the plexiglass sleeves.
  • Measured value receiver provides that light-scattering material is introduced between the second conductor end of the first optical waveguide and the first conductor end of the second optical waveguide.
  • An additional embodiment of the invention provides that the specific requirements for different types of measured value receivers are taken into account by suitable selection of adhesives with different refractive index.
  • FIG. 1 shows a circuit arrangement according to the invention, while in
  • Fig. 2 shows a measured value receiver according to the invention.
  • Glass fibers are used in optical fibers to transmit light waves.
  • the wave range transmitted in this case is between approximately 0.6 to 1.4 ⁇ m.
  • optical fibers have also been known for a long time in temperature measurement.
  • communications technology as well as in optical temperature measurement, among other arguments, great reliability and accuracy as well as minimal influence by magnetic and other influences are decisive factors for the use of optical fibers.
  • Optical fibers consisting of an inner fiber, which is covered by an outer cladding fiber, are made of multi-component optical glass or purest glass, depending on the area of application.
  • the inner fiber is cylindrical and light-guiding.
  • the light signals are guided according to the physical principle the total reflection. It is important that the refractive index of the inner fiber is higher than that of the cladding fiber. As can be seen in Fig. 1, the output is one
  • Transmitter 1 connected to the input of an electro-optical converter 2. At the output of the electro-optical
  • the second end 12 of the first optical waveguide 7 is connected to a measured value receiver 9, which is arranged directly at a measuring point 10, in the present case with a switch contact.
  • the first end 13 of a second optical waveguide 8 is also connected to the measured value receiver 9, the second end 14 of which is connected to the input of an opto-electrical converter 3.
  • the output of the opto-electrical converter 3 is connected via a measuring amplifier 5 to the input of a measuring device 6.
  • the transmitter 1 sends a continuous or periodic signal, which is converted into light in the electro-optical converter 2 and coupled into the measuring and test loop 4 consisting of the first and the second optical waveguides 7, 8 and to the opto-electrical converter 3 is forwarded.
  • the opto-electrical converter 3 converts the optical signals into electrical signals and passes them on to the measuring device 6 via the measuring amplifier 5.
  • the measuring and test loop 4 is guided over a measured value receiver 9, which is arranged at the measuring point 10. Occurs at the measuring point 10 light in the form of a
  • the measured value receiver 50 shown in FIG. 2 essentially consists of a cylindrical sleeve 57 into which the ends 53, 54 of two optical fibers 51, 52 are used. In the present case, there is the cylindrical sleeve 57 into which the second end 53 of a first
  • Optical fiber 51 and the first end 54 of a second optical fiber 52 are inserted, made of plexiglass.
  • the inner diameter of the cylindrical sleeve 57 is only slightly larger than the outer diameter of the optical waveguide sheaths 55, 56 and glued to them. If the measured value receiver 50 is provided for the monitoring of switching elements under oil, then this is
  • the two conductor ends 53, 54 are arranged at the smallest possible distance from one another on a common axis.
  • the end faces of the conductor ends 53, 54 are lenticular.
  • a quartz glass tube 58 is pushed over.
  • Types of measured value receivers can easily take into account special spatial characteristics of different measuring points.

Landscapes

  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

Des circuits et un récepteur de valeurs de mesure détectent et mesurent des sources de lumière, de préférence des arcs électriques dans des appareils commutateurs. Un émetteur optique (1) qui émet en continu ou périodiquement un signal pendant la période de mesure et un récepteur optique (3) sont reliés par une boucle de mesure et de contrôle (4). La boucle de mesure et de contrôle (4) se compose de deux guides d'ondes lumineuses (7, 8) entre lesquels est connecté un récepteur (9) optique de valeurs de mesure. Le récepteur de valeurs de mesure à connecter dans les circuits comprend une douille cylindrique (57) en plexiglas insérée sur la deuxième extrémité (53) du premier guide d'ondes lumineuses (51) et sur la première extrémité (54) du deuxième guide d'ondes lumineuses (52). Les gaines (55, 56) des guides d'ondes lumineuses sont collées à la face interne de la douille (57). Les extrémités (53, 54) des guides d'ondes sont mutuellement espacées et disposées sur un axe longitudinal commun.
PCT/AT1991/000124 1990-12-07 1991-12-04 Circuits et recepteur de valeurs de mesure pour la detection et la mesure de sources de lumiere WO1992010845A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT248090 1990-12-07
ATA2480/90 1990-12-07

Publications (1)

Publication Number Publication Date
WO1992010845A1 true WO1992010845A1 (fr) 1992-06-25

Family

ID=3535085

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AT1991/000124 WO1992010845A1 (fr) 1990-12-07 1991-12-04 Circuits et recepteur de valeurs de mesure pour la detection et la mesure de sources de lumiere

Country Status (1)

Country Link
WO (1) WO1992010845A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2942850A1 (fr) * 2014-05-06 2015-11-11 Siemens Aktiengesellschaft Capteur d'arc lumineux et dispositif de détection d'arc lumineux doté d'un capteur d'arc lumineux

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE547773A (fr) * 1955-06-24
WO1980001442A1 (fr) * 1978-12-27 1980-07-10 Bbc Brown Boveri & Cie Dispositif de surveillance avec detecteur optique des arcs electriques dans un disjoncteur
DE3231306A1 (de) * 1981-09-04 1983-03-24 ASEA AB, 72183 Västeraas Anordnung zur erfassung von lichtboegen und anderen lichtquellen
WO1988008217A1 (fr) * 1987-04-14 1988-10-20 Strömberg Oy Relais a arc
FR2642520A1 (fr) * 1989-01-31 1990-08-03 Alcatel Transmission Dispositif de detection d'arc electrique pour guide d'ondes

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE547773A (fr) * 1955-06-24
WO1980001442A1 (fr) * 1978-12-27 1980-07-10 Bbc Brown Boveri & Cie Dispositif de surveillance avec detecteur optique des arcs electriques dans un disjoncteur
DE3231306A1 (de) * 1981-09-04 1983-03-24 ASEA AB, 72183 Västeraas Anordnung zur erfassung von lichtboegen und anderen lichtquellen
WO1988008217A1 (fr) * 1987-04-14 1988-10-20 Strömberg Oy Relais a arc
FR2642520A1 (fr) * 1989-01-31 1990-08-03 Alcatel Transmission Dispositif de detection d'arc electrique pour guide d'ondes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2942850A1 (fr) * 2014-05-06 2015-11-11 Siemens Aktiengesellschaft Capteur d'arc lumineux et dispositif de détection d'arc lumineux doté d'un capteur d'arc lumineux

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