WO2001009582A1 - Vorrichtung zur messung des anpressdruckes eines wicklungspresselements in einem leistungstransformator - Google Patents
Vorrichtung zur messung des anpressdruckes eines wicklungspresselements in einem leistungstransformator Download PDFInfo
- Publication number
- WO2001009582A1 WO2001009582A1 PCT/EP2000/006742 EP0006742W WO0109582A1 WO 2001009582 A1 WO2001009582 A1 WO 2001009582A1 EP 0006742 W EP0006742 W EP 0006742W WO 0109582 A1 WO0109582 A1 WO 0109582A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- sensor
- winding
- contact pressure
- interrogation
- measuring
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
-
- 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
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
- H01F27/306—Fastening or mounting coils or windings on core, casing or other support
Definitions
- the invention relates to a device for measuring the contact pressure which is exerted on a winding in a power transformer or other high-current technical device by a winding pressing element.
- the windings in particular of power transformers, are assembled from a combination of conductors and insulating materials. They represent a complex construction with a basically cylindrical geometry. The windings are arranged after production / winding so that they are enclosed by the iron core of the transformer.
- Transformer windings must be designed to have sufficient mechanical strength and stability to withstand short circuits and other mechanical forces throughout the life of the transformer. A particularly important aspect is the compression of the windings, which ensures good mechanical stability.
- FIG. 6 shows, for example, a typical course of the decreasing contact pressure, which was determined off-line in each case after a short circuit occurred.
- FIG. 7 shows a course that was recorded off-line at planned time intervals.
- Transformer windings are usually pressed during manufacture. There is no possibility of detecting a change during operation. Corrections can only be corrected for extensive repair work, for example if a winding needs to be replaced.
- the invention is therefore based on the object of specifying a device for measuring the contact pressure of a winding press element in a power transformer.
- the device makes it possible to measure the given contact pressure at any time, and thus also the remaining contact pressure that remains after a long period of operation.
- 1 is a schematic diagram of the measuring device arranged in a power transformer
- 2 shows a possible arrangement of a pressure sensor between pressing elements and arrangement of antennas
- 3 shows a first embodiment variant of an arrangement of a sensor element, the element being arranged in an elastic deformation body
- FIG. 4 shows a second embodiment variant of an arrangement of a sensor element, the sensor element being arranged in a spring element
- FIG. 6 shows a typical profile of the contact pressure of a winding press element, which was detected off-line at certain points after a short circuit
- Fig. 9 a dynamically detectable pressure curve in the event of a short circuit.
- Fig. 1 shows a principle representation of an arrangement of the device according to the invention in a power transformer.
- One of several windings 1 is shown.
- Within the winding 1 there is a leg of an iron core 5 that is not visible in the drawing.
- winding pressing elements 2 are inserted in each case.
- a sensor 4 is arranged in the area of the upper pressing elements 2.
- a plurality of sensors 4 can also be arranged.
- the arrangement of the sensor 4 is preferably carried out on the side of the pressing elements 2 facing the core yoke 5.
- sensors 4 that react to pressure or expansion are suitable.
- the at least one sensor 4 is designed as a wireless, that is, a miniature sensor that can be queried by radio.
- the sensor element contained in the sensor 4 is electrically connected to at least one high-frequency or microwave antenna, which is referred to as the sensor antenna 3.
- the core 5 with the windings 1 is located inside a tank 6 in the case of a power transformer. Outside the tank 6, an interrogation electronics 7 is arranged, to which an interrogation antenna 9 is connected via a high-frequency bushing 8 leading through the wall of the tank 6.
- the interrogation antenna 9 and the sensor antenna 3 are arranged so that a radio connection is possible.
- the interrogation electronics 7 contains a transmitter and a receiver as well as control and monitoring devices.
- the measuring device formed by the interrogation electronics 7 in connection with the sensor 4 and the antennas 3, 9 can preferably be implemented and operate in an SAW technology, which is described, for example, in the documents DE-A1-44 13 211 and DE-A1-195 35 543 is described.
- the abbreviation OFW stands for surface acoustic waves.
- the radio transmission takes place with frequencies in the range from 30 MHz to 3 GHz.
- SAW sensors contain a thin plate made of a piezoelectric crystal as a sensor element.
- the high-frequency signal emitted by the interrogator 7 is received by the antenna 3 of the sensor 4 and converted into a propagating mechanical SAW by an (interdigital) converter.
- the propagating SAW are reflected back to the transducer in the sensor 4 via suitable reflecting structures, where they are converted back into an electromagnetic wave and radiated by the antenna 3.
- the physical quantity to be measured must have an effect on the properties of the surface acoustic wave. Most of the time, the speed of propagation and the running distance change.
- SAW sensors are passive elements, i.e. There are neither batteries nor active electronic elements on the substrate, they are particularly suitable for long-term use in harsh environmental conditions.
- the sensor 4 contains a sensor element designed as a chip 40 within a hermetically sealed and elastic encapsulation 10.
- Encapsulation 10 ensures that the sensor element 40 is kept away from chemical influences which could lead to signal falsification and aging effects.
- FIG. 3 shows an embodiment of a sensor 4 by arranging an element 40 within an elastic deformable body 100.
- FIG. 4 shows a combination of a sensor 4 with a spring element 11.
- FIG. 5 shows a possible antenna arrangement, with several sensor antennas 3 working together with a common interrogation antenna 9.
- FIGS. 6 and 7 show, similarly to FIGS. 6 and 7 mentioned at the outset, a profile of the contact pressure as a function of time, but the detection is carried out continuously over several years using an arrangement according to the invention.
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001514544A JP2003506674A (ja) | 1999-07-28 | 2000-07-14 | 電力変圧器の巻線圧縮部材の接触圧力の測定のための装置 |
EP00949346A EP1200809B1 (de) | 1999-07-28 | 2000-07-14 | Vorrichtung zur messung des anpressdruckes eines wicklungspresselements in einem leistungstransformator |
KR1020017015717A KR20020011434A (ko) | 1999-07-28 | 2000-07-14 | 출력 트랜스포머에서 권선 압축 소자의 접촉 압력을측정하는 디바이스 |
CA002380233A CA2380233A1 (en) | 1999-07-28 | 2000-07-14 | Device for measuring the contact pressure of a winding press element in an output transformer |
DE50015380T DE50015380D1 (de) | 1999-07-28 | 2000-07-14 | Vorrichtung zur messung des anpressdruckes eines wicklungspresselements in einem leistungstransformator |
BR0012760-4A BR0012760A (pt) | 1999-07-28 | 2000-07-14 | Aparelho para medir a pressão de contato de um elememto de compressão de enrolamento em um transformador de energia |
US10/058,521 US6718268B2 (en) | 1999-07-28 | 2002-01-28 | Apparatus for measuring a contact pressure of a winding compression element in a power transformer |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19935515.0 | 1999-07-28 | ||
DE19935515A DE19935515A1 (de) | 1999-07-28 | 1999-07-28 | Vorrichtung zur Messung des Anpreßdruckes eines Wicklungspreßelements in einem Leistungstransformator |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/058,521 Continuation US6718268B2 (en) | 1999-07-28 | 2002-01-28 | Apparatus for measuring a contact pressure of a winding compression element in a power transformer |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001009582A1 true WO2001009582A1 (de) | 2001-02-08 |
Family
ID=7916402
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2000/006742 WO2001009582A1 (de) | 1999-07-28 | 2000-07-14 | Vorrichtung zur messung des anpressdruckes eines wicklungspresselements in einem leistungstransformator |
Country Status (11)
Country | Link |
---|---|
US (1) | US6718268B2 (de) |
EP (1) | EP1200809B1 (de) |
JP (1) | JP2003506674A (de) |
KR (1) | KR20020011434A (de) |
CN (1) | CN1157596C (de) |
AT (1) | ATE409852T1 (de) |
BR (1) | BR0012760A (de) |
CA (1) | CA2380233A1 (de) |
DE (2) | DE19935515A1 (de) |
WO (1) | WO2001009582A1 (de) |
ZA (1) | ZA200109825B (de) |
Families Citing this family (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10060520A1 (de) * | 2000-12-06 | 2002-06-20 | Abb Patent Gmbh | Vorrichtung zur Messung der Kernpressung in einem Leistungstransformator |
DE102005013723B3 (de) * | 2005-03-22 | 2006-11-16 | Icos Gmbh | Werkzeug zum Spritzgießen eines Behältnisses sowie Verfahren zum Spritzgießen eines solchen |
US7953559B2 (en) * | 2005-04-28 | 2011-05-31 | Caterpillar Inc. | Systems and methods for maintaining load histories |
US7487066B2 (en) * | 2005-04-28 | 2009-02-03 | Caterpillar Inc. | Classifying a work machine operation |
US7328625B2 (en) | 2005-04-28 | 2008-02-12 | Caterpillar Inc. | Systems and methods for determining fatigue life |
US7472599B2 (en) * | 2006-06-30 | 2009-01-06 | Caterpillar Inc. | Strain sensing device |
US7908928B2 (en) * | 2006-10-31 | 2011-03-22 | Caterpillar Inc. | Monitoring system |
CA2832263C (en) * | 2011-04-04 | 2015-12-29 | Weidmann Electrical Technology, Inc. | Clamping force sensor assembly for monitoring transformer degradation |
EP2549502A1 (de) * | 2011-07-19 | 2013-01-23 | ABB Technology AG | Generatorunterbrecher mit SAW-Sensor |
US9360461B2 (en) * | 2012-06-21 | 2016-06-07 | Edison Welding Institute, Inc. | Acoustic coupling shoes for use in inspecting non-flat surfaces |
CN103698059A (zh) * | 2012-09-27 | 2014-04-02 | 西门子公司 | 传感天线、张力测量装置及负载计量系统 |
JP5983493B2 (ja) * | 2013-03-26 | 2016-08-31 | 株式会社デンソー | 圧力センサ |
CA2909544A1 (en) | 2013-04-26 | 2014-10-30 | Wicor Holding Ag | Fiber-grating sensors having longitudinal-strain-inducing jackets and sensor systems and structures including such sensors |
DE102013222056A1 (de) * | 2013-10-30 | 2015-04-30 | Alstom Technology Ltd. | Elektrischer Transformator oder elektrische Drosselspule und Verfahren zum Betreiben des elektrischen Transformators oder der elektrischen Drosselspule |
CN104112573B (zh) * | 2014-04-30 | 2017-01-25 | 广州西门子变压器有限公司 | 电力变压器 |
CN105466607A (zh) * | 2015-11-17 | 2016-04-06 | 沈阳工业大学 | 变压器线圈短路机械力测试系统及其测试方法 |
CN107843789B (zh) * | 2017-11-02 | 2020-02-28 | 国家电网公司 | 变压器绕组整体老化试验方法 |
CN108036881A (zh) * | 2017-12-19 | 2018-05-15 | 厦门大学 | 一种SiCN陶瓷无线无源压力传感器及其制备方法 |
CN108181040A (zh) * | 2018-01-16 | 2018-06-19 | 西安交通大学 | 一种变压器绕组压紧力测量装置 |
CN108534933B (zh) * | 2018-03-27 | 2020-12-08 | 国网河北省电力有限公司电力科学研究院 | 变压器绕组监测装置 |
CN108896220A (zh) * | 2018-03-28 | 2018-11-27 | 中国电力科学研究院有限公司 | 一种用于对特高压解体式变压器绕组压紧力进行监测的装置及方法 |
CN109524222B (zh) * | 2018-12-11 | 2020-06-19 | 保定天威集团特变电气有限公司 | 一种珀腔压力光纤传感器探头的内部放置方法 |
CN111105926B (zh) * | 2019-12-14 | 2022-04-19 | 深圳先进技术研究院 | 一种变压器的柔性压阻传感器的制备方法以及一种变压器 |
EP3889978B1 (de) * | 2020-04-03 | 2023-08-16 | Hitachi Energy Switzerland AG | Drahtlose übertragung durch einen transformatortank |
EP3910655B1 (de) * | 2020-05-13 | 2023-10-25 | Hitachi Energy Switzerland AG | Elektromagnetische vorrichtung mit mindestens einem drahtlosen sensor |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
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DE3536900A1 (de) * | 1985-09-23 | 1987-04-02 | Transformatoren Union Ag | Einrichtung fuer an spannung liegende transformatoren und drosselspulen zum messen der einspannkraft fuer wicklungen |
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US3855503A (en) * | 1973-09-26 | 1974-12-17 | Westinghouse Electric Corp | Remotely monitored and controlled transformer |
SE377404B (de) * | 1973-10-26 | 1975-06-30 | Asea Ab | |
US4627292A (en) * | 1984-07-03 | 1986-12-09 | Randek Inc. | AC transducers, methods and systems |
GB8703543D0 (en) * | 1987-02-16 | 1987-03-25 | Era Patents Ltd | Transformer testing |
US4972353A (en) * | 1989-02-21 | 1990-11-20 | Ford Motor Company | Radio-frequency transformer providing automatic gain control and overload protection |
JPH05506967A (ja) * | 1990-06-08 | 1993-10-07 | エリン・トランスフォルマトーレン・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツング | 変圧器 |
US5142166A (en) * | 1991-10-16 | 1992-08-25 | Science Research Laboratory, Inc. | High voltage pulsed power source |
US5331747A (en) * | 1992-03-04 | 1994-07-26 | General Electric Company | Hydraulic test apparatus and method for stator in electrical generator |
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DE4413211C2 (de) * | 1994-04-15 | 1997-04-24 | Siemens Ag | Identifizierungs- und/oder Sensorsystem |
EP0677752B1 (de) * | 1994-04-15 | 2001-06-27 | Siemens Aktiengesellschaft | Sensorsystem |
DE19514342C1 (de) * | 1995-04-18 | 1996-02-22 | Siemens Ag | Stromwandler, geeignet zur Stromstärkemessung an/in auf Hochspannung liegenden elektrischen Einrichtungen |
US5726617A (en) * | 1995-07-31 | 1998-03-10 | General Electric Company | Electrical transformer with reduced core noise |
JP3379305B2 (ja) * | 1995-10-03 | 2003-02-24 | 日本精工株式会社 | コイルヨークの固定構造 |
US6494617B1 (en) * | 1999-04-30 | 2002-12-17 | General Electric Company | Status detection apparatus and method for fluid-filled electrical equipment |
-
1999
- 1999-07-28 DE DE19935515A patent/DE19935515A1/de not_active Ceased
-
2000
- 2000-07-14 JP JP2001514544A patent/JP2003506674A/ja active Pending
- 2000-07-14 AT AT00949346T patent/ATE409852T1/de not_active IP Right Cessation
- 2000-07-14 DE DE50015380T patent/DE50015380D1/de not_active Expired - Lifetime
- 2000-07-14 KR KR1020017015717A patent/KR20020011434A/ko not_active Application Discontinuation
- 2000-07-14 WO PCT/EP2000/006742 patent/WO2001009582A1/de active IP Right Grant
- 2000-07-14 CN CNB00810946XA patent/CN1157596C/zh not_active Expired - Lifetime
- 2000-07-14 CA CA002380233A patent/CA2380233A1/en not_active Abandoned
- 2000-07-14 BR BR0012760-4A patent/BR0012760A/pt not_active IP Right Cessation
- 2000-07-14 EP EP00949346A patent/EP1200809B1/de not_active Expired - Lifetime
-
2001
- 2001-11-29 ZA ZA200109825A patent/ZA200109825B/xx unknown
-
2002
- 2002-01-28 US US10/058,521 patent/US6718268B2/en not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3536900A1 (de) * | 1985-09-23 | 1987-04-02 | Transformatoren Union Ag | Einrichtung fuer an spannung liegende transformatoren und drosselspulen zum messen der einspannkraft fuer wicklungen |
Also Published As
Publication number | Publication date |
---|---|
US20020107657A1 (en) | 2002-08-08 |
DE19935515A1 (de) | 2001-02-01 |
ZA200109825B (en) | 2002-09-25 |
EP1200809B1 (de) | 2008-10-01 |
JP2003506674A (ja) | 2003-02-18 |
US6718268B2 (en) | 2004-04-06 |
BR0012760A (pt) | 2002-04-02 |
CN1365442A (zh) | 2002-08-21 |
KR20020011434A (ko) | 2002-02-08 |
ATE409852T1 (de) | 2008-10-15 |
CN1157596C (zh) | 2004-07-14 |
EP1200809A1 (de) | 2002-05-02 |
DE50015380D1 (de) | 2008-11-13 |
CA2380233A1 (en) | 2001-02-08 |
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