EP3662490A1 - Elektrisches gerät zum anschluss an ein hochspannungsnetz und verfahren zur fehlererkennung eines bauteils des elektrischen geräts - Google Patents
Elektrisches gerät zum anschluss an ein hochspannungsnetz und verfahren zur fehlererkennung eines bauteils des elektrischen gerätsInfo
- Publication number
- EP3662490A1 EP3662490A1 EP18779247.8A EP18779247A EP3662490A1 EP 3662490 A1 EP3662490 A1 EP 3662490A1 EP 18779247 A EP18779247 A EP 18779247A EP 3662490 A1 EP3662490 A1 EP 3662490A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- electrical device
- resolved
- values
- pump
- vibration
- 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.)
- Ceased
Links
- 238000000034 method Methods 0.000 title claims description 20
- 238000005259 measurement Methods 0.000 claims abstract description 22
- 239000012530 fluid Substances 0.000 claims abstract description 12
- 238000001816 cooling Methods 0.000 claims abstract description 11
- 238000004804 winding Methods 0.000 claims abstract description 7
- 230000001681 protective effect Effects 0.000 claims description 6
- 230000001133 acceleration Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 2
- 238000011156 evaluation Methods 0.000 claims description 2
- 238000001228 spectrum Methods 0.000 description 13
- 238000001845 vibrational spectrum Methods 0.000 description 13
- 238000011161 development Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 235000010446 mineral oil Nutrition 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L15/00—Indicators provided on the vehicle or train for signalling purposes
- B61L15/0081—On-board diagnosis or maintenance
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L15/00—Indicators provided on the vehicle or train for signalling purposes
- B61L15/0094—Recorders on the vehicle
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
- G01N29/12—Analysing solids by measuring frequency or resonance of acoustic waves
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
- H01F27/12—Oil cooling
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
- H01F27/402—Association of measuring or protective means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
Definitions
- Electrical device for connection to a high-voltage network and method for fault detection of a component of the electrical device
- the invention relates to an electrical device for connection to a high-voltage network with a fluid-tight tank, which is filled with an insulating fluid and in which a core wound by a winding core is arranged, a cooling unit, which is connected to the tank, and a pump for circulating the Insulating fluid of the tank via the cooling unit.
- the invention further relates to a method for monitoring a component.
- transformers are provided for connection to a high-voltage network.
- a transformer when designed for high performance, has a fluid-tight tank filled with insulating fluid.
- an active part is angeord ⁇ net, which consists of a core and windings, each enclose a leg of the core.
- the insulating fluid is, for example, a mineral oil and serves to isolate the active part, which is in operation at a high voltage potential ⁇ tial.
- the insulating fluid is used to cool the active part.
- the insulating fluid is circulated by a pump via a cooling unit, which is connected via pipes to the tank.
- the pump is exposed to a wear process. Damage may occur especially in the ball bearing of the pump. If the pump fails, the cooling of the transformer will fail as well. The transformer must therefore be switched off, so that the power supply for the transformer downstream consumer is interrupted. However, this is highly undesirable.
- the pump is currently being replaced in predetermined maintenance ⁇ cycles. In particular, in a rail transformer defined maintenance cycles are prescribed in which the various components of the train in the depot of Bahnbetrei ⁇ bers serviced and possibly replaced. Although the replacement of the pump takes place before the end of the maximum life specified by the manufacturer, but not depending on the actual state of the respective pump.
- the object of the invention is therefore to provide an electrical device and a method of the type mentioned, with which an unnecessary replacement of a pump is avoided.
- the invention solves this object on the basis of the above-mentioned electrical device by a measuring sensor for detecting the vibrations of the pump, providing time-resolved vibration measured values and a protective unit connected to the measuring sensor, which is set up to receive and convert the time-resolved vibration measured values into frequency-resolved vibration values wherein the protection unit checks the frequency-resolved vibration values for the presence of an error criterion by means of a predetermined logic and is set up when an error criterion is established for producing a warning signal.
- the invention solves this problem by a method in which vibrations of the component to be monitored are detected while obtaining time-resolved vibration measured values and transmitted to a protective unit of the electrical device, which
- Protection unit converts the time-resolved vibration measurement values in fre ⁇ quenzaufgrassgrasse vibration levels and with the aid of a Logic the frequency resolved vibration values are examined for the Vorlie ⁇ conditions of an error criterion out, the protection unit triggers a warning ⁇ signal in the presence of an error criterion.
- the vibrations of a pump or another component of an electrical device are detected by a measuring sensor, which provides time-resolved measurement signals on the output side. These time-resolved measurement signals are converted into frequency-resolved measurement signals. This is done in ⁇ example by a well-known to those skilled Fourier transform. The resulting in this way vibration spectra represent a so-called fingerprint of the pump or the component, from which the respective status of the pump can be derived.
- the protection unit provided according to the invention has a logic by means of which it can be determined whether an error exists.
- the logic of the protection unit has examples play as knowledge of the frequencies both respects ⁇ Lich their position as regards their intensities, resulting in an error-free pump. If the measured spectrum corresponds to the previously known spectrum at least within predefined tolerance values, the protection unit assumes that a repair or possibly an exchange of the pump is unnecessary. However occur, for example additional Fre ⁇ frequencies on or changes the identity of the vibrations compared with the fault-free state of the pump, the logic includes the presence of an error. It can also indicate what kind of errors it is.
- the logic for instance has a software module which accesses a memory unit on the comparison data in Ge ⁇ Stalt of prior art vibration spectra or the like are stored.
- the measurement sensor requires the measurement sensor only a slight Vo ⁇ volume so that it can also be used in applications with limited installation space.
- the measuring sensor can reduce the vibration in the Scope of the invention basically detect any.
- a simple microphone in the invention is sufficient to measure the vibrations in this case via sound waves.
- the measuring sensor is connected directly to the protection unit and set up to detect structure-borne sound. This allows a more compact design.
- the vibrations of the component are detected directly, ie without the interposition of an air layer. This increases the accuracy of the measurement .
- the measuring sensor is an acceleration sensor which is fastened to the pump.
- the measuring sensor is adhesively attached on a Au ⁇ tgephaseuse the pump or of the component.
- multiple measurement sensors or acceleration sensors can be used at different locations on the pump or component.
- the measuring sensor is a piezoelectric element. Piezo elements are particularly compact and inexpensive available on the market.
- the electrical device is a traction transformer.
- Track transformers are used in rail vehicles to convert the supply voltage provided by the contact wire. Due to a limited installation space track transformers must be designed as compact as possible. In addition, train ⁇ transformers are easily possible to carry out in order not to burden nenindi more weight to the rail than necessary.
- the traction transformer can be supplemented by a measuring sensor without the traction transformer tor exceeds the permissible size or a maximum weight.
- the measuring sensor according to the invention is small and can be mounted directly on the pump or another component of the web transformer.
- the time-resolved vibration measurement values or the frequency-resolved vibration ⁇ are values over a wireless connection to a cloud server transmitted, wherein the cloud server additionally integrated to safety guards by means of a prior-art logic, the received data on the existence of a spring criterion out checked and in the presence of an error criterion, a cloud warning he testifies ⁇ .
- a parallel calculation is carried out in a so-called cloud, that is to say a server which is supplied with the corresponding measurement data via a wireless connection.
- the cloud server will come with the data stored on it logic to the same result as the protective unit of electrical ⁇ rule device.
- the protection unit waits for the receipt of a warning signal from the cloud server before a warning signal is issued.
- the double test increases the reliability of the method according to the invention.
- the frequency-resolved vibration ⁇ values for the presence of several error criteria are examined, which are each associated with a particular security level.
- the obtained frequency-resolved spectra represent a so-called fingerprint of the respective pump. For example, if a ball of the ball bearing of the pump is damaged, this fault has a characteristic fingerprint. For example, additional frequencies arise. Other frequencies have, for example, an increased intensity.
- the respective logic therefore checks whether the spectrum obtained by the measurement resembles a spectrum which is based on a previously known error. This error ler is assigned to a specific hazard category.
- an error category is assigned, which generates a warning signal on a display unit, for example, on the transformer, the electrical device or a railway vehicle is fixed, a yellow light signal he testifies ⁇ .
- a serious error that should lead, for example in the next few hours or days to failure of the pump or the component, then a
- a warning signal is generated which triggers a red light on the display element.
- the staff can thus conclude on the basis of the displayed Sig ⁇ nals on the seriousness of the error.
- the warning signal is transmitted to a display unit which is set up for the optical representation of the respective error.
- Figure 1 shows an embodiment of the electrical device 1 according to the invention, which is executed in theticiansbei ⁇ game shown as a web transformer 1.
- the rail transport Formator 1 has a tank 2, which is configured fluid-tight and in which a not visible in the figure Ak ⁇ tivteil is arranged.
- the active part has a core with a leg, which is enclosed by two concentrically arranged windings. The radially outer high-voltage winding is electrically connected to input feedthroughs 3, while the inner winding is connected to two output feedthroughs 4.
- the tank 2 with an insulating fluid is - here an insulating liquid, such as Esteröl- filled.
- a cooling unit 5 which is connected via pipes 6 and 7 to the tank 2.
- a pump 8 serves to circulate the insulating fluid through the cooling unit 5.
- a measuring sensor 9 which is designed in the embodiment shown as a piezoelectric element.
- the piezoelectric element 9 is glued directly onto the housing of the pump 8 and set up for detecting the structure-borne noise of the pump 8. Via a signal line, not shown, the piezoelectric element 9 is connected on the output side to a protective unit 10, which is equipped with a display element 11 in the form of a yellow and red lighting unit.
- the piezoelectric element 9 provides on the output side time-resolved vibration measurement values which are transmitted to the protection unit 10.
- the protection unit 10 performs a Fourier transformation of the received data, generating frequency-triggered vibration values.
- the representation of the intensity of the vibrations as a function of their frequencies is referred to here as a vibration spectrum.
- the detected vibration spectrum is dependent on the respective state of the pump 8. In other words, each state of the pump 8 has a so-called fingerprint in the form of a rule charac ⁇ vibration spectrum in the train.
- a stored in the safety guards ⁇ integrated logic for example, a software that has supply resorted to a data area in which spectra of pumps with known errors are stored. The logic compares the measured vibration spectrum with the previously known spectra.
- FIG. 2 shows a schematic sequence of the invention shown SEN process, in particular in a first step, a data acquisition 11 by the measurement sensor 9 illustrates. A band-pass filter is set ⁇ Then, in a step 13, the vibrations produced by a fault-free pump 8 filtered out. In step 14, the measured vibration spectra by means of the aforementioned logic wakes up the existence of an error criterion out over ⁇ , wherein the error is assigned a security level.
- a corresponding warning signal 15 is generated, which triggers the illumination of a yellow lighting unit 16 in the display 11.
- a warning signal 17 is generated which generates a red signal light 18, whereupon the driver or the maintenance personnel can bring about the immediate replacement of the pump.
- FIG. 3 shows typical vibration spectra, with the frequency in kHz on the respective X axis and the intensity in arbitrary units, in English arbitrary units (au), plotted on the respective Y axis.
- 3 shows a vibration spectrum of a faultless pump. With the dashed line 19, the line of action of the bandpass filter is clarified, which suppresses the lower frequencies for the subsequent evaluation.
- the diagram on the top right shows a vibration spectrum that corresponds to a pump with faulty balls in its bearing. Therefore, in the Comparison with the spectrum on the top left shows additional vibrations to the right of the characteristic curve.
- the vibration spectrum shown on the bottom left corresponds to a fault of the inner bearing collar, whereby the vibration spectrum shown on the bottom right corresponds to a failure of the outer bearing collar.
- the two spectra shown below, is associated with a higher security level than a Feh ⁇ ler, which leads to the spectrum above the right.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Acoustics & Sound (AREA)
- Biomedical Technology (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102017217530.3A DE102017217530A1 (de) | 2017-10-02 | 2017-10-02 | Elektrisches Gerät zum Anschluss an ein Hochspannungsnetz und Verfahren zur Fehlererkennung eines Bauteils des elektrischen Geräts |
| PCT/EP2018/074897 WO2019068445A1 (de) | 2017-10-02 | 2018-09-14 | Elektrisches gerät zum anschluss an ein hochspannungsnetz und verfahren zur fehlererkennung eines bauteils des elektrischen geräts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3662490A1 true EP3662490A1 (de) | 2020-06-10 |
Family
ID=63708296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP18779247.8A Ceased EP3662490A1 (de) | 2017-10-02 | 2018-09-14 | Elektrisches gerät zum anschluss an ein hochspannungsnetz und verfahren zur fehlererkennung eines bauteils des elektrischen geräts |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20200317237A1 (de) |
| EP (1) | EP3662490A1 (de) |
| CN (1) | CN111164714A (de) |
| DE (1) | DE102017217530A1 (de) |
| WO (1) | WO2019068445A1 (de) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102019207358A1 (de) * | 2019-05-20 | 2020-11-26 | Siemens Aktiengesellschaft | Verfahren zum Feststellen unsymmetrischer Schwingungen in einem elektrischen Gerät |
| CN110375846B (zh) * | 2019-08-14 | 2023-08-04 | 杭州柯林电气股份有限公司 | 感知声纹振动在线诊断变压器内部故障的装置 |
| DE102020201329A1 (de) * | 2020-02-04 | 2021-08-05 | Siemens Aktiengesellschaft | Verfahren zum Feststellen unsymmetrischer Schwingungen beim Betrieb eines an ein Hochspannungsnetz angeschlossenen elektrischen Geräts |
| CN113488318B (zh) * | 2021-09-06 | 2021-12-17 | 国网江西省电力有限公司信息通信分公司 | 一种基于物联网的变压器监控装置及方法 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100169030A1 (en) * | 2007-05-24 | 2010-07-01 | Alexander George Parlos | Machine condition assessment through power distribution networks |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6260004B1 (en) * | 1997-12-31 | 2001-07-10 | Innovation Management Group, Inc. | Method and apparatus for diagnosing a pump system |
| US6446027B1 (en) * | 1999-09-17 | 2002-09-03 | General Electric Company | Intelligent analysis system and method for fluid-filled electrical equipment |
| US6802221B2 (en) * | 2001-03-29 | 2004-10-12 | General Electric Company | System and method for conditioned-based monitoring of a bearing assembly |
| EP1786083A1 (de) * | 2005-11-15 | 2007-05-16 | Union Fenosa Distribucion, S.A. | Verfahren und Vorrichtung zur Überwachung von Leistungstransformatoren |
| JP2011141235A (ja) * | 2010-01-08 | 2011-07-21 | Mitsubishi Electric Corp | ポンプの異常検出装置 |
| CN102456419B (zh) * | 2010-10-22 | 2014-03-26 | 中国核动力研究设计院 | 核反应堆屏蔽泵运行故障监测方法及其监测系统 |
| WO2013146502A1 (ja) * | 2012-03-28 | 2013-10-03 | Ntn株式会社 | 鉄道車両用軸受の異常検知システム |
| MX343293B (es) * | 2012-05-31 | 2016-11-01 | Univ Connecticut | Metodo y sistema de prueba de integridad operacional de equipo de perforacion. |
| US9244042B2 (en) * | 2013-07-31 | 2016-01-26 | General Electric Company | Vibration condition monitoring system and methods |
| WO2015095082A1 (en) * | 2013-12-16 | 2015-06-25 | Tdg Aerospace, Inc. | Monitoring systems and methods |
| JP6183346B2 (ja) * | 2014-12-10 | 2017-08-23 | 日本精工株式会社 | 異常診断装置、軸受、回転装置、産業機械及び車両 |
| CN107406090B (zh) * | 2015-01-16 | 2020-11-20 | 国际电子机械公司 | 异常车辆动态检测 |
| US10543511B2 (en) * | 2015-10-07 | 2020-01-28 | Abb Power Grids Switzerland Ag | Material coating system and method |
| CN107014484A (zh) * | 2017-05-19 | 2017-08-04 | 广西电网有限责任公司电力科学研究院 | 一种变压器绕组压紧力试验装置 |
-
2017
- 2017-10-02 DE DE102017217530.3A patent/DE102017217530A1/de not_active Ceased
-
2018
- 2018-09-14 US US16/649,631 patent/US20200317237A1/en not_active Abandoned
- 2018-09-14 CN CN201880064318.2A patent/CN111164714A/zh active Pending
- 2018-09-14 WO PCT/EP2018/074897 patent/WO2019068445A1/de not_active Ceased
- 2018-09-14 EP EP18779247.8A patent/EP3662490A1/de not_active Ceased
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100169030A1 (en) * | 2007-05-24 | 2010-07-01 | Alexander George Parlos | Machine condition assessment through power distribution networks |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111164714A (zh) | 2020-05-15 |
| DE102017217530A1 (de) | 2019-04-04 |
| US20200317237A1 (en) | 2020-10-08 |
| WO2019068445A1 (de) | 2019-04-11 |
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