DE19503802C1 - Device for measurement of hydrogen in transformer oil - Google Patents
Device for measurement of hydrogen in transformer oilInfo
- Publication number
- DE19503802C1 DE19503802C1 DE1995103802 DE19503802A DE19503802C1 DE 19503802 C1 DE19503802 C1 DE 19503802C1 DE 1995103802 DE1995103802 DE 1995103802 DE 19503802 A DE19503802 A DE 19503802A DE 19503802 C1 DE19503802 C1 DE 19503802C1
- Authority
- DE
- Germany
- Prior art keywords
- hydrogen
- transformer oil
- chamber
- membrane
- layer
- 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 - Fee Related
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/26—Oils; viscous liquids; paints; inks
- G01N33/28—Oils, i.e. hydrocarbon liquids
- G01N33/2835—Oils, i.e. hydrocarbon liquids specific substances contained in the oil or fuel
- G01N33/2841—Oils, i.e. hydrocarbon liquids specific substances contained in the oil or fuel gas in oil, e.g. hydrogen in insulating oil
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/28—Electrolytic cell components
- G01N27/40—Semi-permeable membranes or partitions
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Electrochemistry (AREA)
- Molecular Biology (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
Abstract
Description
Die Erfindung betrifft eine Vorrichtung zur Bestimmung des Wasserstoffgehalts in Trafoöl.The invention relates to a device for determining the Hydrogen content in transformer oil.
Bei Transformatoren, die Öl als Kühlmittel enthalten, kann bei nicht ordnungsgemäßen Betrieb, wie beispielsweise Über last oder bei einem Defekt, in der Isolation des Transforma tors Wasserstoff entstehen, der sich im Trafoöl löst. Wird der Trafo weiterbetrieben, kann dies zu einem mit hohen Ko sten verbundenen Totalausfall führen.Transformers that contain oil as a coolant can in the event of improper operation, such as over last or in the event of a defect, in the insulation of the Transforma Hydrogen is generated which dissolves in the transformer oil. Becomes the transformer continues to operate, this can lead to a high Ko most connected total failure.
Bisher wurde in regelmäßigen Abständen dem Trafo Trafoöl ent nommen und einer chemischen Analyse unterzogen. Diese Methode ist aufwendig und teuer.So far, transformer oil has been added to the transformer at regular intervals taken and subjected to a chemical analysis. This method is complex and expensive.
Die Verwendung von Brennstoffzellen zur Überwachung der Was serstoffkonzentration hat den Nachteil, daß diese nicht über einen längeren Zeitraum wartungsfrei betrieben werden können.The use of fuel cells to monitor what has the disadvantage that it does not have can be operated maintenance-free for a longer period of time.
Aus dem Stand der Technik US 38 66 460 ist eine Vorrichtung zur Wasserstoffdetektion bekannt, die in einem ersten Schritt mittels einer ersten Membran Gase aus der Flüssigkeit fil tert. In einem zweiten Schritt wird durch eine zweite Membran der in den Gasen vorhandene Wasserstoff herausgefiltert. Eine thermische Leitfähigkeitsvorrichtung mißt den Wasserstoff druck.A device is known from the prior art US 38 66 460 known for hydrogen detection in a first step by means of a first membrane gases from the liquid fil tert. The second step is through a second membrane the hydrogen present in the gases is filtered out. A thermal conductivity device measures the hydrogen print.
In den Druckschriften IEEE Trans. Electr. Insul., Vol. EI-18, Nr.4, 1983, S. 409-419, Vol. EI-16, Nr. 6, 1981, S. 502- 509 und Vol. EI-12, Nr. 5, 1977, S. 334- 340 sind Vorrich tungen zur Detektion von Wasserstoff in Trafoöl beschrieben.In the publications IEEE Trans. Electr. Insul., Vol. EI-18, No. 4, 1983, pp. 409-419, Vol. EI-16, No. 6, 1981, p. 502- 509 and Vol. EI-12, No. 5, 1977, pp. 334-340 are Vorrich described for the detection of hydrogen in transformer oil.
Die Aufgabe der Erfindung ist es, eine Vorrichtung anzugeben, mit der eine kontinuierliche Überwachung möglich ist. Die Vorrichtung soll wartungsfrei arbeiten. Weiterhin soll die Messung möglichst exakt erfolgen.The object of the invention is to provide a device with which continuous monitoring is possible. The The device should work maintenance-free. Furthermore, the Measure as accurately as possible.
Die Aufgabe wird durch eine Vorrichtung gemäß dem Patentan spruch 1 gelöst.The object is achieved by a device according to the patent spell 1 solved.
Vorteilhafte Weiterbildungen ergeben sich aus den Unteran sprüchen.Advantageous further developments result from the Unteran sayings.
So ist es von besonderem Vorteil, einen Metalloxidsensor ge mäß Anspruch 2 als Wasserstoffsensor zu verwenden, da dieser eine kurze Ansprechzeit und eine hohe Genauigkeit aufweist. So it is particularly advantageous to use a metal oxide sensor according to claim 2 to use as a hydrogen sensor, since this has a short response time and high accuracy.
Die Vorrichtung gemäß Anspruch 3 hat den Vorteil, daß an der Membran keine unterschiedlichen Strömungsgeschwindigkeiten herrschen. Dadurch bleibt der zeitliche Verlauf des Meßsi gnals unbeeinflußt.The device according to claim 3 has the advantage that at the Membrane no different flow rates to rule. As a result, the time course of the Meßsi remains unaffected.
Die Erfindung wird anhand einer Figur näher erläutert.The invention is illustrated by a figure.
Diese zeigt den prinzipiellen Aufbau der Meßvorrichtung.This shows the basic structure of the measuring device.
Die in der Figur gezeigte Meßvorrichtung weist eine Kammer K1 auf, in der sich Trafoöl TÖ befindet. Die Kammer K1 hat einen Ölzufluß und einen Ölabfluß. Benachbart zur Kammer K1 ist eine Meßkammer K2 angeordnet, in der ein Wasserstoffsensor S vorgesehen ist. Die Meßkammer K2 kann mit Luft L oder einem inerten Trägergas, z. B. N₂, Ar oder CO₂ gefüllt sein. Falls die Meßkammer K2 mit Luft L gefüllt ist, ist ein Druckaus gleichselement D, beispielsweise eine Kapillare oder eine kleine Öffnung, vorzusehen. Die Kammer K1 ist von der Meß kammer K2 durch eine Membran M getrennt. Die Membran M wird auf der der Meßkammer K2 zugewandten Seite von einem Gitter oder einem porösen Sintermetall gestützt, da die Membran M sonst dem Trafoöldruck, der in der Kammer K1 herrscht, nicht standhalten könnte. Eine Schicht aus Sintermetall auf der der Kammer K1 zugewandten Seite der Membran M verhindert, daß unterschiedliche Strömungsgeschwindigkeiten an der Membran M die Diffusionsgeschwindigkeit und damit den zeitlichen Ver lauf des Meßsignals beeinflussen. Die Meßkammer K2 ist vor zugsweise aus Metall, zum Beispiel rostfreier Stahl oder aus Glas auszuführen. Kunststoffe sind ungeeignet, da in den Kunststoffen vorhandene Lösungsmittelrückstände ausdampfen und zu einer Verfälschung der Messung führen können.The measuring device shown in the figure has a chamber K1 in which transformer oil TÖ is located. Chamber K1 has one Oil inflow and an oil drain. Is adjacent to chamber K1 a measuring chamber K2 arranged in which a hydrogen sensor S is provided. The measuring chamber K2 can with air L or a inert carrier gas, e.g. B. N₂, Ar or CO₂ filled. If the measuring chamber K2 is filled with air L, is a Druckaus same element D, for example a capillary or small opening to provide. The chamber K1 is from the measuring chamber K2 separated by a membrane M. The membrane M is on the side facing the measuring chamber K2 by a grid or a porous sintered metal because the membrane M otherwise the transformer oil pressure prevailing in chamber K1 is not could withstand. A layer of sintered metal on the Chamber K1 facing side of the membrane M prevents different flow velocities on the membrane M the diffusion speed and thus the temporal Ver influence the course of the measurement signal. The measuring chamber K2 is in front preferably made of metal, for example stainless steel or Run glass. Plastics are unsuitable because in the Evaporate existing solvent residues from plastics and can lead to a falsification of the measurement.
Die Membran M ist aus zwei Schichten aufgebaut. Die erste Schicht besteht aus Polysulfon oder Polyethersulfon mit einer Schichtdicke von ca. 5 bis 200 µm. Diese erste Schicht stellt eine wasserstoffdurchlässige, ölbeständige und ölabweisende Schicht dar. Die zweite Schicht der Membran M besteht aus Celluloseacetat-Butyrat, das auf einem Trägergewebe aufge bracht ist. Diese Schicht ist wasserstoffdurchlässig. Hinge gen ist sie für Kohlenwasserstoffe undurchlässig. Die Membran M weist eine Alterungsbeständigkeit größer als 5 Jahre auf.The membrane M is made up of two layers. The first Layer consists of polysulfone or polyether sulfone with a Layer thickness from approx. 5 to 200 µm. This first layer poses a hydrogen-permeable, oil-resistant and oil-repellent Layer represents. The second layer of the membrane M consists of Cellulose acetate butyrate, which is suspended on a carrier fabric is brought. This layer is permeable to hydrogen. Hinge It is impermeable to hydrocarbons. The membrane M has an aging resistance greater than 5 years.
Die Membran M ist ölabweisend und trennt den im Trafoöl TÖ gelösten Wasserstoff von dampfförmigen Kohlenwasserstoffen, die ebenfalls im Trafoöl TÖ gelöst sind. Die Trennung ist er forderlich, weil die gasförmigen Kohlenwasserstoffmoleküle bei einer Betriebstemperatur des Wasserstoffsensors von 600 bis 700°C auseinander brechen würden. Der Wasserstoffsensor würde dann neben dem zu messenden Wasserstoff auch die Kohlenwasserstoffe detektieren, was zu einer Verfälschung des Meßergebnisses führen würde.The membrane M is oil-repellent and separates it from the transformer oil TÖ dissolved hydrogen from vaporous hydrocarbons, which are also solved in transformer oil TÖ. The separation is him required because of the gaseous hydrocarbon molecules at an operating temperature of the hydrogen sensor of 600 would break apart up to 700 ° C. The hydrogen sensor in addition to the hydrogen to be measured, the Detect hydrocarbons, which leads to adulteration of the Measurement result would lead.
Als Wasserstoffsensor S kann jedes zum Nachweis geringer Was serstoffkonzentrationen in Luft geeignete Bauelement verwen det werden. Beispielsweise ist ein Taguchi-Gassensor der Firma Figaro, vgl. J. Watson, R. A. Yates, Electronic Engineering May 1985, S. 47-57 geeignet. Die Verwendung eines Gassensors auf der Basis gesputterter Ga₂O₃-Dünnschichten ist besonders vorteilhaft, da dieser Sensor eine besonders hohe Änderung des elektrischen Widerstandes selbst bei geringer Wasserstoffkonzentration in Luft zeigt. Ein derartiger Sensor ist aus dem Stand der Technik EP 464 244 A1 und EP 464 243 A1 bekannt. Besonders vorteilhaft ist der in der Anmeldung angegebene Sensor, bei dem auf den separaten Temperaturfühler verzichtet und der Heizungswiderstand zur Temperaturmessung verwendet wird.As a hydrogen sensor S, anything can be used to prove little use suitable components in air concentrations be det. For example, a Taguchi gas sensor is the Figaro, cf. J. Watson, R.A. Yates, Electronic Engineering May 1985, pp. 47-57. The use of a Gas sensor is based on sputtered Ga₂O₃ thin layers particularly advantageous because this sensor is particularly high Change in electrical resistance even at low Shows hydrogen concentration in air. Such a sensor is from the prior art EP 464 244 A1 and EP 464 243 A1 known. The one in the registration is particularly advantageous specified sensor, where on the separate temperature sensor waived and the heating resistor for temperature measurement is used.
Die Vorrichtung zur Messung des Kohlenwasserstoffgehalts in Trafoöl ist geeignet 50 ppm Wasserstoff in Öl, bezogen auf das Volumen, nachzuweisen.The device for measuring the hydrocarbon content in Transformer oil is suitable for 50 ppm hydrogen in oil, based on the volume to demonstrate.
Ein Betrieb mehrerer unterschiedlich empfindlicher Sensoren nebeneinander, zum Beispiel mit einem sogenannten Sensor array, mit um einen breiteren Nachweisbereich zu erhalten, ist möglich.An operation of several differently sensitive sensors side by side, for example with a so-called sensor array, with to get a wider detection range, is possible.
Die Kammer K1 kann der Ölbehälter des Transformators sein. Die Vorrichtung zur Wasserstoffdetektion ist problemlos an diesen anzuflanschen.The chamber K1 can be the oil tank of the transformer. The device for hydrogen detection is on without any problems flange it.
Claims (5)
- - die eine Kammer (K1) mit Trafoöl aufweist,
- - die eine Meßkammer (K2) aufweist, in der sich ein Wasser stoffsensor (S) befindet,
- - bei der die Kammer (K1) von der Meßkammer (K2) durch eine Membran getrennt ist, welche
- - which has a chamber (K1) with transformer oil,
- - Which has a measuring chamber (K2), in which there is a hydrogen sensor (S),
- - In which the chamber (K1) is separated from the measuring chamber (K2) by a membrane, which
eine zweite Schicht (52) aus Celluloseacetat-Butyrat auf weist, welches auf ein Trägergewebe aufgebracht ist.a first layer (S1) made of polysulfone or polyether sulfone, and which
has a second layer ( 52 ) of cellulose acetate butyrate, which is applied to a carrier fabric.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1995103802 DE19503802C1 (en) | 1995-02-06 | 1995-02-06 | Device for measurement of hydrogen in transformer oil |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1995103802 DE19503802C1 (en) | 1995-02-06 | 1995-02-06 | Device for measurement of hydrogen in transformer oil |
Publications (1)
Publication Number | Publication Date |
---|---|
DE19503802C1 true DE19503802C1 (en) | 1996-03-14 |
Family
ID=7753261
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1995103802 Expired - Fee Related DE19503802C1 (en) | 1995-02-06 | 1995-02-06 | Device for measurement of hydrogen in transformer oil |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE19503802C1 (en) |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1999053314A1 (en) * | 1998-04-14 | 1999-10-21 | Ge Syprotec Inc. | Method and apparatus for monitoring gas(es) in a dielectric fluid |
DE10146212A1 (en) * | 2001-09-19 | 2003-04-10 | Stange Elektronik Gmbh | Process for determining the hydrogen content of nitriding gas mixtures in nitriding ovens comprises measuring the heat conductivity of the gas mixtures in a measuring cell connected to the working chamber |
FR2844881A1 (en) * | 2002-09-19 | 2004-03-26 | Bosch Gmbh Robert | Apparatus for determination of the condition of oil, namely lubricating oil for an internal combustion engine, determines the concentration of volatile components of the oil |
WO2010109474A1 (en) * | 2009-03-23 | 2010-09-30 | Electrical Research & Development Association | An improved online incipient fault sensor device for detection of incipient fault in oil-filled electrical apparatus such as a transformer |
US8196448B2 (en) | 2010-01-20 | 2012-06-12 | GM Global Technology Operations LLC | Hydrogen sensor assembly |
EP2490011A1 (en) * | 2011-02-17 | 2012-08-22 | General Electric Company | Optical gas sensor for use with electrical equipment and method for detecting gas in electrical equipment using said gas sensor |
ITBO20110670A1 (en) * | 2011-11-23 | 2013-05-24 | Techimp Technologies Srl | DEVICE FOR MEASURING THE CONCENTRATION OF A GAS DISSOLVED IN AN ELECTRIC INSULATION OIL |
EP2691746A2 (en) * | 2011-03-31 | 2014-02-05 | Qualitrol Company, Llc | Combined hydrogen and pressure sensor assembly |
EP2827144A1 (en) * | 2013-07-19 | 2015-01-21 | Dräger Safety AG & Co. KGaA | Sensor head for a gas measurement device |
EP3073261A1 (en) * | 2015-03-26 | 2016-09-28 | General Electric Company | Trace gas measurment apparauts for electrical equipment |
EP3076172A1 (en) * | 2015-04-02 | 2016-10-05 | General Electric Company | Trace gas measurement apparaus for electrical equipment |
US10473697B2 (en) | 2015-04-01 | 2019-11-12 | General Electric Company | Current transducer with offset cancellation |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3866460A (en) * | 1973-05-30 | 1975-02-18 | Westinghouse Electric Corp | Gas detector for fluid-filled electrical apparatus |
-
1995
- 1995-02-06 DE DE1995103802 patent/DE19503802C1/en not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3866460A (en) * | 1973-05-30 | 1975-02-18 | Westinghouse Electric Corp | Gas detector for fluid-filled electrical apparatus |
Non-Patent Citations (3)
Title |
---|
IEEE Trans.Electr.Insul., Vol. EI-12, Nr. 5, 1977, S. 334-340 * |
IEEE Trans.Electr.Insul., Vol. EI-16, Nr. 6, 1981, S. 502-509 * |
IEEE Trans.Electr.Insul., Vol. EI-18, Nr. 4, 1983, S. 409-419 * |
Cited By (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1999053314A1 (en) * | 1998-04-14 | 1999-10-21 | Ge Syprotec Inc. | Method and apparatus for monitoring gas(es) in a dielectric fluid |
DE10146212A1 (en) * | 2001-09-19 | 2003-04-10 | Stange Elektronik Gmbh | Process for determining the hydrogen content of nitriding gas mixtures in nitriding ovens comprises measuring the heat conductivity of the gas mixtures in a measuring cell connected to the working chamber |
DE10146212C2 (en) * | 2001-09-19 | 2003-07-17 | Stange Elektronik Gmbh | Method and device for determining the hydrogen content of gas mixtures |
FR2844881A1 (en) * | 2002-09-19 | 2004-03-26 | Bosch Gmbh Robert | Apparatus for determination of the condition of oil, namely lubricating oil for an internal combustion engine, determines the concentration of volatile components of the oil |
DE10243510B4 (en) * | 2002-09-19 | 2012-01-19 | Robert Bosch Gmbh | Device for determining the state of oil |
WO2010109474A1 (en) * | 2009-03-23 | 2010-09-30 | Electrical Research & Development Association | An improved online incipient fault sensor device for detection of incipient fault in oil-filled electrical apparatus such as a transformer |
DE102011008720B4 (en) * | 2010-01-20 | 2013-06-06 | GM Global Technology Operations LLC (n. d. Gesetzen des Staates Delaware) | Hydrogen sensor arrangement |
US8196448B2 (en) | 2010-01-20 | 2012-06-12 | GM Global Technology Operations LLC | Hydrogen sensor assembly |
EP2490011A1 (en) * | 2011-02-17 | 2012-08-22 | General Electric Company | Optical gas sensor for use with electrical equipment and method for detecting gas in electrical equipment using said gas sensor |
US8889422B2 (en) | 2011-02-17 | 2014-11-18 | General Electric Company | Optical gas sensor for use with electrical equipment and methods of assembling same |
EP2691746A2 (en) * | 2011-03-31 | 2014-02-05 | Qualitrol Company, Llc | Combined hydrogen and pressure sensor assembly |
EP2691746A4 (en) * | 2011-03-31 | 2014-10-01 | Qualitrol Co Llc | Combined hydrogen and pressure sensor assembly |
ITBO20110670A1 (en) * | 2011-11-23 | 2013-05-24 | Techimp Technologies Srl | DEVICE FOR MEASURING THE CONCENTRATION OF A GAS DISSOLVED IN AN ELECTRIC INSULATION OIL |
WO2013076618A1 (en) | 2011-11-23 | 2013-05-30 | Techimp Technologies S.R.L. | Device for measuring the concentration of a gas dissolved in an electrical insulation oil. |
CN103998927A (en) * | 2011-11-23 | 2014-08-20 | 特英普科技股份责任有限公司 | Device for measuring the concentration of a gas dissolved in an electrical insulation oil |
EP2827144A1 (en) * | 2013-07-19 | 2015-01-21 | Dräger Safety AG & Co. KGaA | Sensor head for a gas measurement device |
EP3073261A1 (en) * | 2015-03-26 | 2016-09-28 | General Electric Company | Trace gas measurment apparauts for electrical equipment |
US20160282323A1 (en) * | 2015-03-26 | 2016-09-29 | General Electric Company | Trace Gas Measurement Apparatus for Electrical Equipment |
US10024836B2 (en) * | 2015-03-26 | 2018-07-17 | General Electric Company | Trace gas measurement apparatus for electrical equipment |
US10473697B2 (en) | 2015-04-01 | 2019-11-12 | General Electric Company | Current transducer with offset cancellation |
EP3076172A1 (en) * | 2015-04-02 | 2016-10-05 | General Electric Company | Trace gas measurement apparaus for electrical equipment |
CN106053719A (en) * | 2015-04-02 | 2016-10-26 | 通用电气公司 | Trace gas measurement apparatus for electrical equipment |
US9874497B2 (en) | 2015-04-02 | 2018-01-23 | General Electric Company | Trace gas measurement apparatus for electrical equipment |
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