WO1997028590A1 - Verfahren zur stellungserfassung eines schaltgeräts - Google Patents
Verfahren zur stellungserfassung eines schaltgeräts Download PDFInfo
- Publication number
- WO1997028590A1 WO1997028590A1 PCT/DE1997/000093 DE9700093W WO9728590A1 WO 1997028590 A1 WO1997028590 A1 WO 1997028590A1 DE 9700093 W DE9700093 W DE 9700093W WO 9728590 A1 WO9728590 A1 WO 9728590A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- signal
- reflection
- switching
- interior
- stored
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/035—Gas-insulated switchgear
- H02B13/065—Means for detecting or reacting to mechanical or electrical defects
-
- 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
- H01H9/16—Indicators for switching condition, e.g. "on" or "off"
- H01H9/168—Indicators for switching condition, e.g. "on" or "off" making use of an electromagnetic wave communication
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/035—Gas-insulated switchgear
- H02B13/0356—Mounting of monitoring devices, e.g. current transformers
-
- 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
- H01H2300/00—Orthogonal indexing scheme relating to electric switches, relays, selectors or emergency protective devices covered by H01H
- H01H2300/03—Application domotique, e.g. for house automation, bus connected switches, sensors, loads or intelligent wiring
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02B90/20—Smart grids as enabling technology in buildings sector
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/14—Protecting elements, switches, relays or circuit breakers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
Definitions
- the invention relates to a method for detecting the position of a switching device in an encapsulated switchgear and a switch position with a device therefor.
- a metal-encapsulated high-voltage switchgear assembly is known from German utility model 94 20 199, in which a surface wave element (SAW) is arranged in one of its gas spaces.
- SAW surface wave element
- the SAW is used for the detection of gas components caused by the action of an arc on the extinguishing gas contained in the encapsulation or for the detection of pressure waves.
- An antenna is arranged on the outside of the encapsulation and is used for wireless information transmission with an evaluation device.
- the invention has for its object to provide a simple solution for position detection of a switching device in a switchgear.
- the object is achieved with a method for detecting the position of a switching device in an encapsulated switchgear
- the transmission signal can em optical, em acoustic or em electromagnetic transmission signal sem. This makes it possible, for example, to use infrared light or high-frequency signals, which accommodates adaptation to the respective application.
- steps a) and b) are repeated for different switching states 3 or switching positions of the switching device. are repeated and corresponding first reflection signals are stored, and wherein a second reflection signal detected in step c) is compared with the first stored reflection signals and corresponding to an agreement with one of the first reflection signals em corresponding signal signal for the respective switch position is generated. This enables a selective detection of the respective switching states.
- Each switching position is associated with a characteristic echo signal in the sense of an image that is evaluated.
- a fault signal or a fault message can be generated. In this way, unsaved or unclear switch positions or possibly unclear signals can be evaluated.
- the transmission signal can advantageously serve at the same time as a call signal for at least one sensor, in particular a surface wave sensor (SAW), whereby a favorable combination of several functions is given. If necessary, the same hardware can be used.
- the transmission signal can also serve as a signal for an information transmission. This simultaneously enables data traffic with a possibly removed transceiver station
- an alarm signal is emitted if, with the generation of the alarm signal, a trigger signal from a protective device, for example a distance protection or a busbar protection, is emitted from the switchgear part located in the interior or the switchgear.
- a protective device for example a distance protection or a busbar protection
- Another solution according to the invention consists in a sealed switchgear assembly with at least one switchgear arranged in an interior of the encapsulation, and with a device for position detection, which comprises a transceiver directed towards the interior, the sensors starting from a first switch position of the switchgear ⁇ the receiving device emits a first transmission signal into the interior and receives and stores a resulting first reflection signal, the transmission / reception device emitting a second transmission signal and receiving and possibly storing a second reflection signal, and the two reflection signals being fed to a comparison device which is a signal for generates a new switching state if there is a discrepancy between the two reflection signals.
- the present new solution allows position detection with little effort. No sensors, cables or other detection means are required in the switchgear. The detection takes place from one point in the interior for the encapsulation. It goes without saying that a large number of switching devices can be monitored within an interior.
- the transceiver is advantageously designed at the same time as a calling device for a sensor, in particular a surface wave sensor and / or as a transceiver station for transmitting information within the encapsulation. This provides new multiple functions that allow the switchgear to operate better.
- switching device and “encapsulated switching system” are understood to mean any electrical devices or components which can be mechanically switched or changed and which are accommodated in an encapsulation, a housing or a boiler.
- the interior can be filled with a gas or other insulating medium. Examples include: an encapsulated disconnector or circuit breaker, an SF6-insulated transformer with tap changer, encapsulated switchgear or a locking device located in a boiler.
- FIG shows a switchgear in a longitudinal section.
- a switchgear with a monitoring device wherein an information transmission with high frequency is used. It goes without saying that the monitoring device described also applies to other functions within the switchgear, e.g. for detecting a switching position without sensors according to a radar principle, for additional control tasks or purely for information transmission.
- FIG shows an encapsulated, gas-insulated switchgear assembly 1, as is known, for example, from the prior art according to the above-mentioned German utility model 94 20 199.
- Switchgear 1 is suitable for high or medium voltage.
- Switchgear is also understood to mean an encapsulated pipeline here.
- SAW surface area sensors
- SAW 7a for temperature detection
- SAW 7b for current detection
- SAW 7c for gas detection
- SAW 7d for position detection.
- SAWs for other functions or tasks such as light detection, pressure measurement, etc., are also conceivable.
- Each SAW has at least one antenna 9 for information transmission, in particular for interrogation, as the receiving and transmitting means.
- the information is transmitted from the SAWs 7a to 7d to a central transmitting and receiving antenna which is effective for all SAWs 7a to 7d and is referred to below as antenna element 11.
- Antenna, transmitting and receiving antenna, antenna element or receiving and transmitting means are understood here to mean any radiation and receiving elements that allow radiation and / or reception of electromagnetic or optical waves, for example radio antennas, ultrasound or optical transmitting and Receiving elements (eg infrared elements), whereby a division in the sending and receiving direction can also be included.
- the embodiment according to FIG. 1 relates, for example, to radio information transmission.
- the antenna element 11 is connected via suitable lines 13, e.g. a coaxial cable, possibly with the interposition of an adapter, connected to a control and monitoring device (hereinafter referred to as monitoring device 15).
- monitoring device 15 a control and monitoring device
- the transmitting and receiving part 17 or at least parts thereof can also be arranged decentrally in the antenna element 11, so that only low-power data traffic takes place between the monitoring device 15 and the antenna element 11. The transmission power is then generated locally. It is also conceivable for the antenna element 11 to be connected directly to a bus 19 with a decentralized device in a wired or wireless manner.
- the monitoring device 15 with the transmitting and receiving part 17 and the connected antenna element 11 can also be referred to in the sense of the present idea as a transmitting / receiving device or transceiver.
- the monitoring device 15 can be, for example, a central unit in a switchgear assembly or else a branch-related or device-related device that is connected via a further data connection, e.g. is connected in terms of data technology via the bus 19 to a superordinate control center 21.
- This control center 21 can be a local control center, which in turn is connected to a higher-level network control center via a suitable interface 22.
- control center 21 comprises suitable operating and display means, e.g. a keyboard and a screen, for the operation of the switchgear 1.
- a portable device e.g. A portable computer or a laptop, for operation or for other receipts and expenses at various points in the system shown in FIG. 1, e.g. can be connected to the bus 19 or to the control device 15.
- the data connections shown can be arbitrary, e.g. B. as a wired connection, in particular wire line or light guide, or wireless connection, e.g. Radio, sound or optical connection, carried out sem.
- the antenna element 11 is arranged at an opening within the encapsulation 5.
- the opening is formed by a flange 23, which is closed with a closure element 25, for example a cover and a pressure ring 27.
- a closure element 25 for example a cover and a pressure ring 27.
- the antenna element 11 is thus inside the encapsulation 5, so that the best conditions for a problem-free information transmission to the SAWs 7a to 7d are given. Since the Anten ⁇ nenelement 1 1 is located within a quasi neck and does not project into the inner space 4, are avoided here electric field or technical problems. In addition, the antenna element 11 forms a structural unit with a component that can be detached from the encapsulation 5 anyway, so that it is easily accessible or can be retrofitted.
- the SAWs 7a to 7d are arranged partly on the encapsulation 5, partly on the busbar 6, on a movable part of the switching device 3 or also on or behind a first support 28, optionally in a separate gas space. If necessary, a plurality of sensors for different functions can have a common antenna arranged at one location. It is also possible that em sensor contains several measurement functions.
- the sensors can be designed in the manner and size of a check card, the major part of the card forming the antenna.
- the support 28 is made of a dielectric material, so that the high-frequency transmission between the antenna element 11 and the SAW 7c behind the support 28 is not impaired.
- the material of the support must be provided accordingly (e.g. glass for an optical transmission).
- the flange 23 or the opening required for coupling can, for example, be part of an existing maintenance opening, a gas filler neck, a cast resin filling opening, a sight hole or an end flange sem. Accordingly, the embodiments described here by way of example can be used for any possible openings in switchgear assemblies, for example also for the end flange 29 shown. A specially provided opening can also be used.
- the antenna element 11 it is also conceivable for the antenna element 11 to be arranged outside the encapsulation 5 and to radiate into the interior 4 via a dielectric window.
- an opening is available as an opening in the area of a connecting flange of two encapsulation sections, the antenna element possibly being embodied as a rod antenna and cast in the opening.
- a further antenna (not shown in more detail) is arranged in the gas space behind the further support 39, it is also possible to use the interior 4 of the encapsulation 5 as a transmission space, with protected data transmission over long distances being possible. This option can preferably be used with pipelines. A combination with a simultaneous sensor query is conceivable.
- the transmitting and receiving antenna 11 with the control device 15 and the transmitting and receiving part 17 can have a further or alternative function as a transmitting / receiving device: the transmitting / receiving device can serve, in particular, to detect the position of the switching device 3. The position is recorded as follows:
- the transmitting and receiving antenna 11 sends a first transmission signal m to the interior 4 of the encapsulation 5.
- This can be a special signal for position detection or, as mentioned above, the call signal for a surface wave sensor. If necessary, transmission can take place on another frequency than that of OFW ⁇ 7a to 7d, so that a better, selective recording is possible. If necessary, multiplex operation is also conceivable, i.e. alternately for each function.
- the emitted transmission signal propagates in the interior 4 of the encapsulation 5, is reflected and generates a first resultant reflection signal at the transmission and reception antenna 11, which is received and stored in the transmission / reception device.
- a second transmission signal is emitted into the interior 4 and a resulting second reflection signal is received and stored.
- the two reflection signals are then compared with one another. If there is a deviation, it can be assumed that a mechanical change has taken place in the interior 4.
- the transmission signal can be an optical, acoustic or electromagnetic transmission signal.
- the reflection signal When evaluating the reflection signal, only a frequency segment, a time segment or a specific frequency spectrum that is characteristic of the respective interior 4 may need to be stored and compared. With a large number of possible switching states or with the arrangement of a plurality of switching devices within an interior, it may be expedient that the maximum number of mechanical switching states quasi as fingerprints, echo patterns or signal patterns (respectively assigned reflection signals of all possible combinations of switching states) in one Memory of the control device 15 are stored. By comparing the currently determined second reflection signal with the stored one, the respective switching position or the system state can be determined without the system being mechanically or optically accessible within the encapsulation 4. In this case, only one installation location for the transmitting and receiving antenna 11 is required. It is also conceivable that a two-part transmitting and receiving antenna or an additional receiving antenna is provided, so that an improved evaluation of the reflection signal and / or the response signal is possible.
- a pattern or reflection signal stored for a specific switching state can also serve as a reference signal for assessing further received reflection signals. If there is a discrepancy between the second received reflection signal and the stored first reflection signals (ie no match), then there is obviously a system state that does not correspond to a defined switching state. In this situation, a fault signal or a fault message is generated.
- an alarm signal can be generated if, with the generation of a message signal by the described device, a triggering device of the system, which is responsible for the switchgear part concerned, emits a trigger signal at the same time.
- a triggering device of the system which is responsible for the switchgear part concerned, emits a trigger signal at the same time.
- the generated signaling, alarm and fault signals can then possibly cause the switchgear to be switched off.
- Further logical links of signals to increase operational safety or for fault diagnosis or localization are possible and conceivable.
- a successful protection triggering can be checked in this way. It can therefore be linked or integrated into an overall protection concept.
- an evaluation of the generated signals according to weighted criteria is also possible, so that early fault detection is possible even under unfavorable operating conditions.
- a self-learning or neural procedure is also conceivable.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
- Selective Calling Equipment (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
- Testing Relating To Insulation (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Gas-Insulated Switchgears (AREA)
- Installation Of Bus-Bars (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP97914073A EP0878043B1 (de) | 1996-01-31 | 1997-01-20 | Verfahren zur stellungserfassung eines schaltgeräts |
DE59700846T DE59700846D1 (de) | 1996-01-31 | 1997-01-20 | Verfahren zur stellungserfassung eines schaltgeräts |
JP9527229A JP2000504554A (ja) | 1996-01-31 | 1997-01-20 | 開閉機器の位置検出方法 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19603461A DE19603461C2 (de) | 1996-01-31 | 1996-01-31 | Verfahren zur Stellungserfassung eines Schaltgeräts sowie gekapselte Schaltanlage mit einer Einrichtung hierzu |
DE19603461.2 | 1996-01-31 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/127,526 Continuation US6020821A (en) | 1996-01-31 | 1998-07-31 | Method of detecting the position of a switching device and encapsulated switching installation having at least one switching device |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1997028590A1 true WO1997028590A1 (de) | 1997-08-07 |
Family
ID=7784153
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE1997/000093 WO1997028590A1 (de) | 1996-01-31 | 1997-01-20 | Verfahren zur stellungserfassung eines schaltgeräts |
Country Status (6)
Country | Link |
---|---|
US (1) | US6020821A (de) |
EP (1) | EP0878043B1 (de) |
JP (1) | JP2000504554A (de) |
CN (1) | CN1213463A (de) |
DE (2) | DE19603461C2 (de) |
WO (1) | WO1997028590A1 (de) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19809819A1 (de) * | 1998-02-27 | 1999-09-02 | Siemens Ag | Gekapselte Energierübertragungsanlage mit einem innerhalb der Kapselung angeordneten Sensor und mit einer dem Sensor zugeordneten Antenne |
EP0980006A3 (de) * | 1998-08-13 | 2000-11-02 | Siemens Aktiengesellschaft | Verfahren zur Feststellung des Ortes eines Kurzschlusses in einer elektrischen Energieversorgungsleitung |
DE10031963C1 (de) * | 2000-06-30 | 2002-02-07 | Moeller Gmbh | Leistungsschalter |
DE10031964C1 (de) * | 2000-06-30 | 2002-02-21 | Moeller Gmbh | Leistungsschalter |
EP1465221B1 (de) * | 2003-04-03 | 2006-10-04 | Maschinenfabrik Reinhausen GmbH | Anordnung für ein Überwachungssystem für Stufenschalter |
US7215299B2 (en) * | 2004-10-12 | 2007-05-08 | Eaton Corporation | Antenna protected from dielectric breakdown and sensor or switchgear apparatus including the same |
DE102004053611A1 (de) * | 2004-11-02 | 2006-05-04 | Siemens Ag | Verfahren sowie Vorrichtung zur Ermittlung der Position von elektrischen Leiterelementen einer Elektroenergieübertragungseinrichtung |
DE102004053612A1 (de) * | 2004-11-02 | 2006-05-04 | Siemens Ag | Überwachungsverfahren für eine durch relativ zueinander bewegbare Kontaktstücke begrenzte Trennstrecke eines elektrischen Schaltgerätes sowie zugehörige Vorrichtung zur Ausführung des Überwachungsverfahrens |
EP1737009A1 (de) * | 2005-06-23 | 2006-12-27 | Abb Research Ltd. | Elektrische Anlage mit einem Kühlelement und Verfahren zum Betrieb dieser Anlage |
JP4870521B2 (ja) * | 2006-10-31 | 2012-02-08 | 三菱電機株式会社 | 主回路開閉装置 |
DE102006058270A1 (de) * | 2006-12-08 | 2008-07-03 | Abb Technology Ag | Gasisolierte Schaltanlage |
DE102008049434A1 (de) * | 2008-09-25 | 2010-04-01 | Siemens Aktiengesellschaft | Schaltgeräteanordnung mit einem Kapselungsgehäuse und mit einem Sensor |
DE102013019064B4 (de) * | 2013-11-15 | 2022-03-31 | Abb Ag | Schaltanlage mit zugänglichen Stromschienen |
DE102019211104A1 (de) * | 2019-07-25 | 2021-01-28 | Siemens Aktiengesellschaft | Verfahren und Vorrichtung zur Detektion von alterungsbedingten Schäden oder Delaminationen an Bauteilen, insbesondere Leistungsmodulen leistungselektronischer Geräte sowie Leistungselektronisches Gerät, insbesondere Umrichter |
CN110676092A (zh) * | 2019-10-18 | 2020-01-10 | 中国铁道科学研究院集团有限公司 | 基于开关设备多路反馈信号的控制系统 |
CN114865520B (zh) * | 2022-05-19 | 2024-06-28 | 中国南方电网有限责任公司超高压输电公司昆明局 | 气体绝缘金属封闭开关设备及其检测系统 |
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FR2388391A1 (fr) * | 1977-04-22 | 1978-11-17 | Merlin Gerin | Dispositif de signalisation pour poste blinde haute-tension |
EP0298069A2 (de) * | 1987-06-29 | 1989-01-04 | GEC ALSTHOM T&D GESELLSCHAFT m.b.H. | Schaltstellungsmelder für Hochspannungsschaltgeräte |
DD269040A1 (de) * | 1985-12-23 | 1989-06-14 | Zittau Ing Hochschule | Anordnung zur ermittlung der schaltstellung elektrischer schaltgeraete |
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DE9420199U1 (de) * | 1994-12-07 | 1995-02-09 | Siemens AG, 80333 München | Metallgekapselte Hochspannungsschaltanlage |
DE19547524C1 (de) * | 1995-12-08 | 1996-11-21 | Siemens Ag | Optisches Überwachungssystem für Hoch- oder Mittelspannungsschalter |
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US4864285A (en) * | 1988-05-11 | 1989-09-05 | O G & E | Method and apparatus for testing contacts to determine if opened or closed |
DE19511795A1 (de) * | 1994-08-26 | 1996-10-02 | Siemens Ag | Elektromechanisches Schaltgerät |
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US5914664A (en) * | 1997-07-03 | 1999-06-22 | Allen-Bradley Company, Llc | Optically sensing auxiliary switch |
-
1996
- 1996-01-31 DE DE19603461A patent/DE19603461C2/de not_active Expired - Fee Related
-
1997
- 1997-01-20 EP EP97914073A patent/EP0878043B1/de not_active Expired - Lifetime
- 1997-01-20 JP JP9527229A patent/JP2000504554A/ja active Pending
- 1997-01-20 DE DE59700846T patent/DE59700846D1/de not_active Expired - Fee Related
- 1997-01-20 WO PCT/DE1997/000093 patent/WO1997028590A1/de active IP Right Grant
- 1997-01-20 CN CN97192896A patent/CN1213463A/zh active Pending
-
1998
- 1998-07-31 US US09/127,526 patent/US6020821A/en not_active Expired - Fee Related
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2388391A1 (fr) * | 1977-04-22 | 1978-11-17 | Merlin Gerin | Dispositif de signalisation pour poste blinde haute-tension |
DD269040A1 (de) * | 1985-12-23 | 1989-06-14 | Zittau Ing Hochschule | Anordnung zur ermittlung der schaltstellung elektrischer schaltgeraete |
EP0298069A2 (de) * | 1987-06-29 | 1989-01-04 | GEC ALSTHOM T&D GESELLSCHAFT m.b.H. | Schaltstellungsmelder für Hochspannungsschaltgeräte |
US4945256A (en) * | 1987-07-09 | 1990-07-31 | Mitsubishi Denki Kabushiki Kaisha | Device for producing even closing of a circuit breaker |
WO1993013495A1 (de) * | 1992-01-03 | 1993-07-08 | Siemens Aktiengesellschaft | Passiver oberflächenwellen-sensor, der drahtlos abfrabgar ist |
DE9420199U1 (de) * | 1994-12-07 | 1995-02-09 | Siemens AG, 80333 München | Metallgekapselte Hochspannungsschaltanlage |
DE19547524C1 (de) * | 1995-12-08 | 1996-11-21 | Siemens Ag | Optisches Überwachungssystem für Hoch- oder Mittelspannungsschalter |
Also Published As
Publication number | Publication date |
---|---|
EP0878043B1 (de) | 1999-12-15 |
CN1213463A (zh) | 1999-04-07 |
DE19603461A1 (de) | 1997-08-07 |
EP0878043A1 (de) | 1998-11-18 |
US6020821A (en) | 2000-02-01 |
DE59700846D1 (de) | 2000-01-20 |
JP2000504554A (ja) | 2000-04-11 |
DE19603461C2 (de) | 1997-12-18 |
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