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EP1161662A1 - Machine electrique haute tension, en particulier turbo-generateur, et procede de mesure de la temperature dans une machine electrique haute tension - Google Patents

Machine electrique haute tension, en particulier turbo-generateur, et procede de mesure de la temperature dans une machine electrique haute tension

Info

Publication number
EP1161662A1
EP1161662A1 EP00926731A EP00926731A EP1161662A1 EP 1161662 A1 EP1161662 A1 EP 1161662A1 EP 00926731 A EP00926731 A EP 00926731A EP 00926731 A EP00926731 A EP 00926731A EP 1161662 A1 EP1161662 A1 EP 1161662A1
Authority
EP
European Patent Office
Prior art keywords
temperature
voltage machine
machine according
electrical
electrical high
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.)
Withdrawn
Application number
EP00926731A
Other languages
German (de)
English (en)
Inventor
Jürgen Klaar
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.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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 Siemens AG, Siemens Corp filed Critical Siemens AG
Priority to EP00926731A priority Critical patent/EP1161662A1/fr
Publication of EP1161662A1 publication Critical patent/EP1161662A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K13/00—Thermometers specially adapted for specific purposes
    • G01K13/04—Thermometers specially adapted for specific purposes for measuring temperature of moving solid bodies
    • G01K13/08—Thermometers specially adapted for specific purposes for measuring temperature of moving solid bodies in rotary movement

Definitions

  • the invention relates to an electrical high-voltage machine, in particular a turbogenerator, with a temperature measuring device for measuring a temperature in the electrical high-voltage machine.
  • the invention also relates to a method for measuring a temperature in an electrical high-voltage machine, in particular in a turbogenerator.
  • thermocouples or resistance thermometers between the upper and lower conductor rod usually results in much lower measured values.
  • the temperature measuring elements between the upper and the lower conductor bar are already far from the conductor bars within a temperature field arising between these conductor bars and laminated core, so that display differences of 20 ° C. and more are possible. When operating electrical machines, these display differences must be taken into account in order to correctly evaluate the temperature display of slot thermometers. For the manufacturers The task is to avoid tightly localized additional losses that can lead to hot spots that are difficult to detect.
  • the object of the invention is to provide an electrical high-voltage machine, in particular a turbogenerator, in which temperature measurement is reliably possible in a simple and cost-effective manner even in areas that are difficult to access.
  • Another object of the invention is to provide a corresponding method.
  • an electrical high-voltage machine in particular a turbogenerator with a housing and with a temperature measuring device for measuring a temperature inside the housing, which temperature measuring device has a temperature sensor designed as a semiconductor chip:
  • Such a temperature sensor measures a temperature by means of an integrated circuit arranged on a semiconductor crystal.
  • the temperature is characterized by a digital measured value.
  • the invention is based on the surprising finding that such a temperature sensor can be used reliably in the extreme environmental conditions of a high-voltage magnet. In particular, tests have shown that this temperature sensor can withstand the high voltages in the long term.
  • Such a temperature sensor is inexpensive and maintenance-free. It can also be used in areas of the high-voltage machine that are difficult to access. Compared to other high voltage resistant temperature measurement methods, e.g. B. by means of fiber-optic temperature measuring systems, the temperature sensor can be used with considerably less installation effort and a considerably longer service life.
  • the temperature sensor Compared to infrared measuring systems or radiation pyrometers, which can be used to measure surface temperatures, the temperature sensor has the advantage of being directly seen measuring point to be attachable. In contrast, with infrared measuring systems or radiation pyrometers, a minimum distance from live parts is always required for insulation strength.
  • the temperature measuring device preferably has an electronic module which is electrically connected to the temperature sensor.
  • the electronic module further preferably has a memory for storing measured values characterizing a temperature in each case. This makes it possible to store a number of temperatures, preferably a temperature profile over time. Reading the memory can then, for. B. at suitable check times.
  • the electronic module preferably has a microprocessor and a timer, a chronological sequence of the storage of the measured values being controllable by the microprocessor and the timer.
  • the electronics module can thus, for. For example, a time interval for successive measurements of the temperature can be defined.
  • a start or end time for a temperature measurement can be specified in a simple manner.
  • the electronics module and the temperature sensor are preferably spatially separated from one another, preferably by at least 10 cm.
  • the temperature sensor can furthermore be arranged at measuring points which are difficult to access or are critical with regard to high voltage, without the electronics module thereby being affected.
  • a maximum temperature that is decisive for the electronic module when selecting the measuring point is generally not critical due to the spatial separation.
  • the electronics module and the temperature sensor are preferably not separated from one another by more than one meter. In particular, this has the consequence that signals which are between the electronic module and the temperature raturensor be replaced, not significantly impaired in their quality.
  • the electronics module preferably has a transmission device for the contactless transmission of signals, in particular by means of infrared radiation.
  • a contactless transmission achieves in particular a separation between the high-voltage potential at which the temperature measurement takes place and an earth potential at which the temperature measurement is evaluated.
  • no other transmission means e.g. B. cable required.
  • the electronics module preferably has a receiving device for the contactless reception of signals, in particular by means of infrared radiation.
  • the electronics module preferably has a power supply by means of a solar cell.
  • the electronics module preferably has a power supply by means of inductive generation of electrical energy from a magnetic field surrounding the electronics module.
  • a local, independent power supply for the electronic module is possible by supplying the electronic module with a solar cell or with magnetic stray fields in the vicinity. This means that there is no need to provide transmission links for the power supply, which would in particular lead to problems of potential separation between high voltage and earth potential.
  • the turbogenerator has a rotor with an electrical rotor winding, the temperature sensor being preferably arranged on the rotor, more preferably on the rotor winding. Temperature measurement on the rotor or on the rotor winding is particularly difficult since high centrifugal forces occur due to high rotational speeds. With the help of tests, it was possible to prove that the temperature sensor and also that
  • At least two temperature measuring devices are preferably provided on the electrical machine, wherein each temperature measuring device has its own identification unit by means of which it can be identified and each temperature measuring device can be read out by a common evaluation unit.
  • an identification unit can e.g. be stored in a microprocessor of the electronic module as an identification number.
  • several temperature measuring devices can be operated in a simple manner with a single evaluation unit. A transmission of a measured temperature value is combined with the identification number of the respective temperature measuring device, so that an unambiguous assignment of the measured temperature to the measuring point is ensured.
  • the object directed to a method is achieved by a method for measuring a temperature in a turbogenerator, in which the temperature is determined as a digital measured value by means of a semiconductor chip, the measured value is transmitted to an electronic module and from there to an evaluation unit; is transmitted.
  • the measured value is preferably stored in the electronic module.
  • the measured value is preferably transmitted from the electronic module to the evaluation unit without contact, in particular by means of infrared radiation.
  • FIG. 2 shows a turbogenerator with a temperature measuring device.
  • FIG. 1 shows a temperature measuring device 1.
  • the temperature measuring device 1 has a measuring unit 3 and an evaluation unit 5.
  • the measuring unit 3 has a temperature sensor 7 which is designed as a semiconductor chip.
  • the temperature sensor 7 is electrically connected to an electronics module 9.
  • the electronics module 9 is electrically connected to a power supply unit 11.
  • the electronic module 9 has a memory 13, a microprocessor 15, a timer 17, a receiving unit 19 and a transmitting unit 20.
  • the memory 13 is electrically connected to the microprocessor 15.
  • the microprocessor 15 has an identification unit 16.
  • the microprocessor 15 is connected to the timer 17.
  • the microprocessor 15 is also electrically connected to the receiving unit 19 and to the transmitting unit 20.
  • the evaluation unit 5 has a communication unit 21 and a processing unit 23. The evaluation unit 5 communicates with the electronics module 9 of the measuring unit 3 via the communication unit 21 with transmission signals 25 and reception signals 27.
  • the temperature sensor 7 measures a local temperature.
  • the temperature sensor is arranged on a winding rod of the electrical winding of the stator or rotor of a turbogenerator and measures its local temperature.
  • this temperature is measured directly as a digital measured value.
  • This measured value is forwarded to the electronics module 9.
  • the measured value is stored in the memory 13 in the electronics module 9.
  • a time sequence for storing measured values in the memory 13 is controlled. For example, with the help of the microprocessor 15 and the timer 17, a temperature measurement value is stored in the memory 13 every minute.
  • the power supply for the temperature measurement by means of the temperature sensor 7 and the control and storage of the temperature measurement by means of the electronics module 9 is carried out by the power supply unit 11.
  • B. have a battery. However, it can also have a solar cell through which electrical energy for supplying the measuring unit 3 is obtained from ambient light. This generation of electrical energy can also take place in the power supply unit 11 by inductive generation of an electrical voltage by means of time-varying magnetic stray fields in the vicinity of the power supply unit 11.
  • the temperature measurement values measured by the measuring unit 3 are read out by the evaluation unit 5.
  • a transmission signal 25 is transmitted to the reception unit 19 of the electronics module 9. This causes the memory content of the memory 13 to be queried.
  • the memory content is transmitted via the transmission unit 20 as a reception signal 27 to the communication unit 21 of the evaluation unit 5.
  • the communication unit 21 transmits the measured temperature values to the processing unit 23.
  • B. be a personal computer.
  • the temperature measurement values can then be represented by the evaluation unit 5.
  • Such a temperature measuring device 1 is used for temperature measurement in a turbogenerator 41. This is explained in more detail with reference to FIG. 2.
  • FIG. 2 shows a longitudinal section of a turbogenerator 41.
  • the turbogenerator 41 has a stator 43, which, not shown here, is constructed from a laminated core and an electrical stator winding.
  • the stator 43 surrounds a rotor 45.
  • the rotor 45 has a shaft 47 and an electrical rotor winding 49 arranged on the shaft 47.
  • the stator 43 and the rotor 45 are arranged in a common housing 51.
  • the turbogenerator 41 has five temperature measuring devices 1A, IB, IC, 1D, 1E according to FIG. 1.
  • Two temperature measuring devices 1A, IB are arranged opposite one another on the rotor 45.
  • the respective temperature sensors 7A, 7B are arranged on the rotor winding 49.
  • the respective electronic modules 9A, 9B are arranged on the shaft 47 outside the housing 51.
  • Each temperature measuring device 1A, IB can be identified by a respective identification unit 16 (see FIG. 1), which is not shown here.
  • Each electronics module 9A, 9B transmits the temperature measured by the respective temperature sensor 7A, 7B to a common communication unit 21 by means of an infrared signal 27A, 27B.
  • the signal 27A, 27B is recorded, which, when the rotor 45 rotates, just enters the reception area of the communication unit 21.
  • the signals 27A, 27B are passed out of the housing 51 via a bushing 53
  • the identification unit 16 is used to identify which temperature measuring devices 1A, IB the currently transmitted infrared signal 27A, 27B is to be assigned to.
  • the temperature sensors 7A, 7B withstand both the high voltages in the turbogenerator 41 and the high centrifugal forces which occur when the rotor 45 rotates.
  • the respective electronics module 9A, 9B is spatially separated from the temperature sensor 7A, 7B, so that high temperatures in the electrical rotor winding 49 have no harmful effects on the electronics modules 9A, 9B.
  • the temperature measuring device IC is arranged on the stator 43.
  • the temperature sensor 7C is designed as a slot thermometer, so it measures a winding temperature in a slot in the laminated core of the stator 43.
  • the electronics module 9C is separate from the Temperature sensor 7C arranged in a position that is harmless with regard to occurring voltages and temperatures.
  • the temperature measurement values are transmitted to the processing unit 23 via a feedthrough 53 through the housing 51.
  • the temperature measuring devices ID and 1E are also arranged on the stator and are shown here somewhat enlarged, on the conductor bars 60, 62 of the winding head 63.
  • the two temperature measuring devices ID and 1E transmit with their respective electronic modules 9D, 9E to a common communication unit 21D, with a signal assignment via the respective identification units 16, not shown in detail.
  • a clock generator 64 is arranged on the shaft 47, which is connected to the processing unit 23 via a line 66 and is used for synchronization in the transmission of the signals 27.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)

Abstract

Cette invention concerne une machine électrique haute tension dans laquelle la température, en particulier au niveau d'un enroulement de rotor (49) ou d'un enroulement de stator (43), est mesurée de manière fiable, simple et peu coûteuse, au moyen d'une puce à semi-conducteur (7). L'invention concerne également un procédé de mesure de la température correspondant.
EP00926731A 1999-03-17 2000-03-06 Machine electrique haute tension, en particulier turbo-generateur, et procede de mesure de la temperature dans une machine electrique haute tension Withdrawn EP1161662A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP00926731A EP1161662A1 (fr) 1999-03-17 2000-03-06 Machine electrique haute tension, en particulier turbo-generateur, et procede de mesure de la temperature dans une machine electrique haute tension

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
EP99105488 1999-03-17
EP99105488 1999-03-17
EP00926731A EP1161662A1 (fr) 1999-03-17 2000-03-06 Machine electrique haute tension, en particulier turbo-generateur, et procede de mesure de la temperature dans une machine electrique haute tension
PCT/EP2000/001951 WO2000055588A1 (fr) 1999-03-17 2000-03-06 Machine electrique haute tension, en particulier turbo-generateur, et procede de mesure de la temperature dans une machine electrique haute tension

Publications (1)

Publication Number Publication Date
EP1161662A1 true EP1161662A1 (fr) 2001-12-12

Family

ID=8237793

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00926731A Withdrawn EP1161662A1 (fr) 1999-03-17 2000-03-06 Machine electrique haute tension, en particulier turbo-generateur, et procede de mesure de la temperature dans une machine electrique haute tension

Country Status (7)

Country Link
US (1) US20020038192A1 (fr)
EP (1) EP1161662A1 (fr)
JP (1) JP2002539753A (fr)
KR (1) KR20020001776A (fr)
CN (1) CN1343304A (fr)
PL (1) PL350616A1 (fr)
WO (1) WO2000055588A1 (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2273832C1 (ru) * 2004-10-19 2006-04-10 Государственное образовательное учреждение высшего профессионального образования "Самарская государственная академия путей сообщения" (СамГАПС) Способ измерения температуры изоляции обмоток электрических машин
DE102006033318A1 (de) * 2006-07-17 2008-01-24 Ziehl Industrie-Elektronik Gmbh + Co Vorrichtung zur Temperaturerfassung in Umgebungen mit starken elektromagnetischen Wechselfeldern und/oder an rotierenden Teilen
DE102012011004A1 (de) 2012-06-02 2013-12-05 Volkswagen Aktiengesellschaft Elektromotor sowie Verfahren zur Bildung eines Aufnahmeraums für einen Temperatursensor in einem Elektromotor
DE102012011003A1 (de) 2012-06-02 2013-12-05 Volkswagen Aktiengesellschaft Elektromotor
DE102012010995A1 (de) * 2012-06-02 2013-12-05 Volkswagen Aktiengesellschaft Elektromotor sowie Verfahren zur Bestimmung der Temperatur in dem Wickelkopf eines Elektromotors
KR101515967B1 (ko) * 2013-11-14 2015-05-04 한국철도기술연구원 광전스위치를 이용한 철도차량 추진용 영구자석 동기전동기의 회전자 온도 검출장치
DE202018103227U1 (de) * 2018-06-08 2019-09-11 Inter Control Hermann Köhler Elektrik GmbH & Co. KG Elektromotor
DE102018220676A1 (de) 2018-11-30 2020-06-04 Robert Bosch Gmbh Rotor eines Elektromotors mit einem Temperatursensor
US12206295B2 (en) 2020-02-20 2025-01-21 Mitsubishi Electric Corporation Rotating electric machine system having a control circuit that estimates an internal state
DE102021201601A1 (de) * 2021-02-19 2022-08-25 Zf Friedrichshafen Ag Rotor für eine elektrische Maschine sowie elektrische Maschine mit einem Rotor
CN113394920A (zh) * 2021-06-24 2021-09-14 上海卓荃电子科技有限公司 一种电机转子测温系统、智能控温式电机
US20240288314A1 (en) * 2021-06-25 2024-08-29 Vermeer Manufacturing Company Systems and methods for wireless temperature monitoring of an implement

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US3873817A (en) * 1972-05-03 1975-03-25 Westinghouse Electric Corp On-line monitoring of steam turbine performance
US3881181A (en) * 1973-02-22 1975-04-29 Rca Corp Semiconductor temperature sensor
GB2085167A (en) * 1980-09-25 1982-04-21 Northern Eng Ind Temperature monitor for rotary component
SU1312533A1 (ru) * 1985-09-30 1987-05-23 Всесоюзный Научно-Исследовательский Экспериментально-Конструкторский Институт Электробытовых Машин И Приборов Устройство дл температурной диагностики обмотки статора электрической машины
DE4005396A1 (de) * 1990-02-21 1991-08-22 Bayerische Motoren Werke Ag Messsignal-uebertragungsvorrichtung an einem kraftfahrzeug
US5257863A (en) * 1992-07-30 1993-11-02 Electric Power Research Institute, Inc Electronic rotor temperature sensor

Non-Patent Citations (1)

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Title
See references of WO0055588A1 *

Also Published As

Publication number Publication date
KR20020001776A (ko) 2002-01-09
PL350616A1 (en) 2003-01-27
WO2000055588A1 (fr) 2000-09-21
JP2002539753A (ja) 2002-11-19
CN1343304A (zh) 2002-04-03
US20020038192A1 (en) 2002-03-28

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