EP0384552A2 - Procédé de commande d'un disjoncteur de puissance - Google Patents

Procédé de commande d'un disjoncteur de puissance Download PDF

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Publication number
EP0384552A2
EP0384552A2 EP90250033A EP90250033A EP0384552A2 EP 0384552 A2 EP0384552 A2 EP 0384552A2 EP 90250033 A EP90250033 A EP 90250033A EP 90250033 A EP90250033 A EP 90250033A EP 0384552 A2 EP0384552 A2 EP 0384552A2
Authority
EP
European Patent Office
Prior art keywords
circuit breaker
tripping
time
switching
trigger
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.)
Granted
Application number
EP90250033A
Other languages
German (de)
English (en)
Other versions
EP0384552A3 (fr
EP0384552B1 (fr
Inventor
Peter Dr. Huhse
Horst Dr. Kopplin
Joachim Dr. Niewisch
Josef Trott
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
Original Assignee
Siemens AG
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 filed Critical Siemens AG
Publication of EP0384552A2 publication Critical patent/EP0384552A2/fr
Publication of EP0384552A3 publication Critical patent/EP0384552A3/fr
Application granted granted Critical
Publication of EP0384552B1 publication Critical patent/EP0384552B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/666—Operating arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/59—Circuit arrangements not adapted to a particular application of the switch and not otherwise provided for, e.g. for ensuring operation of the switch at a predetermined point in the ac cycle
    • H01H33/593—Circuit arrangements not adapted to a particular application of the switch and not otherwise provided for, e.g. for ensuring operation of the switch at a predetermined point in the ac cycle for ensuring operation of the switch at a predetermined point of the ac cycle
    • 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
    • H01H9/54—Circuit arrangements not adapted to a particular application of the switching device and for which no provision exists elsewhere
    • H01H9/56—Circuit arrangements not adapted to a particular application of the switching device and for which no provision exists elsewhere for ensuring operation of the switch at a predetermined point in the ac cycle
    • H01H2009/566—Circuit arrangements not adapted to a particular application of the switching device and for which no provision exists elsewhere for ensuring operation of the switch at a predetermined point in the ac cycle with self learning, e.g. measured delay is used in later actuations
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/666—Operating arrangements
    • H01H2033/6665—Details concerning the mounting or supporting of the individual vacuum bottles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/666—Operating arrangements
    • H01H2033/6667—Details concerning lever type driving rod arrangements
    • 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

Definitions

  • the invention relates to a method for operating a circuit breaker, in particular a vacuum switch, using a tripping control device which, regardless of the time of a command to switch off, causes the opening of the contact pieces at a time which is in a fixed relationship to the zero crossing of the current.
  • a method of this kind is known, for example, from US-A-3,555,354.
  • the purpose of this method is to limit the duration of the arc discharge between the switching elements of the circuit breaker as much as possible, on the other hand to ensure a sufficient contact opening at the time the current passes through zero.
  • the trigger control device detects the flowing current via transducers and obtains periodic pulses therefrom at the zero crossing of the current and in the maximum or minimum of the current curve. Both pulses are supplied to an AND gate via a timing element, which can additionally be acted upon by a signal which is derived from the absolute magnitude of the current.
  • the trigger signal emanating from the AND gate arrives in the usual way at a trigger magnet which actuates a valve or a latching arrangement to release the switching mechanism or the switch drive.
  • Vacuum switches in a similar way to certain types of gas pressure switches, have the property that their switching paths achieve high dielectric strength in an extremely short time after a power interruption. They are therefore particularly prone to so-called multiple re-ignitions in strongly inductive circuits, which are a rapid sequence of extinguishing and ignition processes between the open contacts put. High overvoltages can be associated with this process. In three-phase networks, multiple re-ignitions in the first quenching pole of the circuit breaker can lead to a virtual current cut in the last quenching poles of the circuit breaker, which also creates overvoltages.
  • a circuit breaker is operated using a tripping control unit, it is in principle possible to carry out switching operations without overvoltages even in three-phase networks if the control is carried out in such a way that there is such a distance between the contact pieces in the zero-crossing of all poles of the circuit breaker that the arc is under the influence the recurring voltage cannot reignite.
  • Such a switching method proves to be extremely difficult to carry out because the so-called opening window, i.e. H. the period in which the switching pieces must be opened in a network with a frequency of 50 Hz has a width of only about 2 ms.
  • Conventional circuit breakers are unable to open with such precision.
  • the mechanical properties of circuit breakers can change over the course of their use to such an extent that they can no longer keep the opening window after a long period of operation and changed environmental conditions, even if they are suitable for this purpose when new.
  • the object of the invention is to design the method for operating a circuit breaker in such a way that changes in properties occurring over the course of the service life of a circuit breaker are automatically taken into account and the opening window can thus be maintained even after a long operating time.
  • this object is achieved in that the tripping control unit receives a measured value of the tripping delay of the circuit breaker from the time the tripping signal is issued to Time of separation of the contact pieces is supplied as a correction variable in a previous switch-off.
  • the delay in triggering is the result of a whole series of mechanical influencing variables, which are difficult to detect individually.
  • the delay in tripping can be determined in different ways with sufficient accuracy and relatively little effort. This creates the possibility of carrying out the switching free of overvoltages, in particular of motor circuits and choke coils with vacuum switches, with economically justifiable effort.
  • a circuit breaker is suitable for carrying out the new method, to which a measuring device is assigned to determine the tripping delay, which is set in motion by the receipt of a tripping signal and stopped when the contact pieces are separated, and in that a storage device is provided which Saves the measured value of the tripping delay at least until the next switch-off process.
  • a delay in tripping that is based on a switch-off that has already taken place some time ago may be used as a correction variable for the control of the circuit breaker, it has nevertheless been shown that this procedure is suitable for relatively narrow opening windows to apply when the switch is opened.
  • Both electrical and electro-mechanical or electronic-mechanical evaluation devices are suitable for measuring the delay in tripping.
  • the occurrence of an arc voltage between the contact pieces can be used as a criterion for the contact separation.
  • the evaluation device for detecting the contact opening can contain a circuit arrangement for measuring the capacitance between the contact pieces. This measurement too The process works without contact and therefore does not require any changes to the contact system itself.
  • a drive element which is directly connected to a movable contact piece can be provided with a reflector and an optical waveguide can be fixedly arranged opposite it at a short distance and cooperates at its end facing away from the reflector with a light source and a receiving circuit for reflected light.
  • the trip control unit can supply the temperature of the drive device of the circuit breaker as a further correction variable. This can be done in a relatively simple manner by means of a temperature sensor fitted in the drive housing. If a series of tests is used to determine what influence the temperature has on the delay in tripping, the expected positive or negative deviation from the standard value can be determined by assigning the respective temperature to a standard value of the tripping delay.
  • Another criterion for the mechanical sequence of the switching process is the time that has elapsed since the last switching operation.
  • a regularly used circuit breaker is more likely to hold the value of the delayed tripping once determined for a circuit breaker that is operated only rarely and possibly only at intervals of months or years. This influence can be taken into account by using a suitable correction variable.
  • the time that has elapsed since the last switching operation can be measured, and here, too, tests are to be carried out to determine how the tripping delay changes based on a standard value depending on the downtime.
  • the switching mechanism of circuit breakers is generally released by an electromagnet, which is fed from an auxiliary network. Since the voltage of this auxiliary network can fluctuate and the response speed of the tripping magnet depends on it, the value of the supply voltage of the tripping magnet also has a direct influence on the tripping delay. According to a development of the invention, this influence can also be taken into account by supplying the supply voltage of the tripping magnet to the tripping control device in order to obtain a further correction variable. The temperature of the winding of the tripping magnet can also be detected, since the resistance and thus the current through the winding depends on the voltage.
  • All of the above-mentioned measured values or correction values can expediently be fed to a real-time microprocessor, which provides a trigger signal for the circuit breaker by comparison with measured values or standard values taken from a memory.
  • threshold value elements can be provided, which bring about an undelayed triggering when the current falls below a lower limit or when the current exceeds an upper limit.
  • FIG. 1 shows a three-phase motor 1 which can be switched on and off by means of a three-pole vacuum circuit breaker 2.
  • the symbol for a switching lock denotes a latching device 3, which is responsible for releasing the switching contacts of the circuit breaker 2 for opening.
  • the latching device 3 can only be actuated by a trigger control device 4, which in turn is to be acted upon by a trigger 5 or manually operated command transmitter 6.
  • the trigger control device 4 are supplied with current-dependent signals which are obtained at current transformers 7.
  • the tripping control device 4 contains a memory unit 10 which is used to store at least one measured value for the tripping delay of the circuit breaker 2 during the previous opening is provided.
  • the memory unit 10 can be designed in such a way that it can take up both further measured values of the delay in triggering from previous switching operations and additional variables which are essential for the mechanical sequence of the switching operation.
  • FIG. 2 An example of the measurement of the time of opening of the switching elements of the circuit breaker 2 is shown in FIG. 2.
  • a high-frequency measuring voltage from a voltage source 13 is applied to the switching path of the circuit breaker 2 via protective resistors 14 and support insulators 11 and 12, the capacitance of which is shown in dashed lines with the symbol for a capacitor.
  • a voltage with a frequency of 5 MHz is suitable.
  • a high-frequency voltage is taken from terminals 15 for evaluation. In the course of this high-frequency voltage, a characteristic jump occurs due to the change in the capacitance of the measuring circuit as a result of the opening of the circuit breakers of the circuit breaker 2.
  • the circuit breakers of a vacuum switch have flat contact surfaces which can be either circular or annular . While there is no capacitance in the closed state of the switching elements, one arises through the formation of a plate capacitor as soon as the switching elements separate from one another. The activation of this capacitance in the measuring circuit is evaluated in an evaluation device 16 provided with a protective device 17 by comparison with the time at which the latching device 3 is released and results in the tripping delay of the circuit breaker 2.
  • FIG. 2 Another example of the measurement of the tripping delay of the circuit breaker 2 is shown schematically in FIG.
  • the voltage across the switching path of the circuit breaker 2 is supplied to a measuring device 22 leads. This therefore receives the voltage signal "0" when the switching elements of the circuit breaker 2 are closed and a voltage signal corresponding to the arc voltage when the switching elements of the circuit breaker 2 are opened when current is flowing.
  • the delay in tripping of the circuit breaker 2 is obtained by comparing the times at which this arcing voltage occurs and the time at which the switch lock 3 is released.
  • the dashed line connection between the switch lock 3 and the measuring device 22 indicates the comparison of the times mentioned.
  • FIG. 1 shows, partly in section, a vacuum circuit breaker of a known type (cf. DE-B-27 17 958), the switching tubes 25 of which can be actuated by an insulating drive rod 26 each. These drive rods engage via an angle lever 27 on a linearly displaceable support bolt 30 of the movable contact piece 31.
  • this support pin is provided with a reflective marking and a sensor is placed opposite it, a movement of the support pin and thus of the switching element 31 can be determined.
  • FIG. 4 indicates that the light is supplied and the reflection is returned through an optical waveguide 32, which is connected to an evaluation unit 33 consisting of transmitter and receiver.
  • the evaluation unit 33 again determines the delay in tripping by comparing the point in time of a movement of the support bolt 30 with the point in time at which the latching in the drive box of the circuit breaker 2 is released.
  • the evaluation unit 33 can be integrated in the tripping control unit 4 (FIG. 1).
  • FIG. 5 shows a vacuum circuit breaker 2, similar to FIG. 4, partially in section, which has a tripping control device 4 and sensors for influencing variables which can influence the tripping delay.
  • the trip control unit 4 is housed in the drive box 35 of the circuit breaker 2.
  • the switching tube 25 is held by a ratchet lever 36 which engages at one end of a two-armed lever 40 seated on a switching shaft 37.
  • the movable contact piece 31 is actuated by a drive rod 26 and an angle lever.
  • the control shaft 37 is locked against rotation in the sense of switching off by means of the two-armed lever 40 and the ratchet lever 36.
  • the pawl lever 36 can be moved by a switch-off magnet 41 into the switch-off position shown in broken lines, in which the switching shaft 37 is released for switching off. Switch-off springs 37 are then rotated counterclockwise by means of switch-off springs (not shown) and the drive rod 26 is carried along. As indicated by an arrow 42, the switch-off magnet 41 can be actuated by the trigger control device 4. This happens when the trigger 5 or a command entered manually (arrow 42) has requested that a switch-off operation be carried out and the trigger control device 4 has determined the appropriate time for this. For this purpose, the trigger control device 4 first determines the times of the following current zero crossings on the basis of the measured values transmitted by the current transformers 7.
  • the triggering command is then passed on to the trigger magnet 41, taking into account the value of the trigger delay stored in the trigger control device 4 during the previous switch-off, as well as other variables provided by sensors.
  • the voltage available to supply the tripping magnet 41 is also detected by a further sensor.
  • a timer 47 as a component of the trigger control unit 4 provides the time that has elapsed since the last switch-off operation for correcting the delay in triggering.
  • the trigger delay is determined again by means of a sensor 50 and is entered into the trigger control unit for comparison with the value of the trigger delay located in the memory 10 of the trigger control unit 4.
  • Either the previous stored value can be replaced by the new measured value or the new measured value can also be saved in order to determine the change in the tripping delay in the course of several circuits and to calculate the tripping delay to be expected with the greatest possible probability by extrapolation of the stored measured values.
  • the release magnet 41 can be both a shunt release and an undervoltage release. Since undervoltage releases operate on the principle of the holding magnet, a higher response speed can generally be achieved than with a shunt release. However, it depends on the given interaction between the release magnet and the switching mechanism whether one or the other type of magnet is more suitable.
  • FIG. 6 shows a block diagram of the program sequence as it is carried out using a real-time microprocessor.
  • the functional sequence is immediately apparent from the inscription on the blocks.
  • a threshold value element Iu is first used to determine whether a very small current is present or whether it is below a certain low limit.
  • the functional sequence for this case is labeled "A" in the block diagram.
  • the triggering takes place without delay in accordance with the functional sequence designated by B.
  • the time at which the tripping command is passed on to the tripping magnet is calculated in the manner already described.
  • the so-called opening window for surge-free shutdowns in three-phase networks is very narrow.
  • the opening window can be widened to approximately 8.5 msec. Accordingly, the requirements for the accuracy of the mechanical control and the electronic detection of changes in the release delay are alleviated.
  • the method of offset switching is known per se (DE-C-28 54 092).

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Keying Circuit Devices (AREA)
EP90250033A 1989-02-22 1990-02-08 Procédé de commande d'un disjoncteur de puissance Expired - Lifetime EP0384552B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3905822 1989-02-22
DE3905822A DE3905822A1 (de) 1989-02-22 1989-02-22 Verfahren zum betrieb eines leistungsschalters

Publications (3)

Publication Number Publication Date
EP0384552A2 true EP0384552A2 (fr) 1990-08-29
EP0384552A3 EP0384552A3 (fr) 1992-02-26
EP0384552B1 EP0384552B1 (fr) 1995-05-10

Family

ID=6374885

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90250033A Expired - Lifetime EP0384552B1 (fr) 1989-02-22 1990-02-08 Procédé de commande d'un disjoncteur de puissance

Country Status (4)

Country Link
US (1) US5119260A (fr)
EP (1) EP0384552B1 (fr)
JP (1) JPH02260344A (fr)
DE (2) DE3905822A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4105697A1 (de) * 1991-02-21 1992-08-27 Elektro App Werke Veb Synchronisiert schaltendes vakuumschuetz mit einzelantrieb
WO1997000531A1 (fr) * 1995-06-19 1997-01-03 Siemens Aktiengesellschaft Dispositif de protection contre les surcharges des contacts de commutation d'un appareil de commutation
US5663169A (en) * 1992-08-07 1997-09-02 Merck & Co., Inc. Benzoxazinones as inhibitors of HIV reverse transcriptase
US11581724B2 (en) 2019-05-16 2023-02-14 Hitachi Energy Switzerland Ag Controlled switching of a circuit breaker
DE102021122028A1 (de) 2021-08-25 2023-03-02 Elpro Gmbh Schaltschloss

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4022262A1 (de) * 1990-07-12 1992-01-16 Siemens Ag Verfahren zum betrieb eines leistungsschalters
US5644463A (en) * 1992-10-20 1997-07-01 University Of Washington Adaptive sequential controller with minimum switching energy
US5361184A (en) * 1992-10-20 1994-11-01 Board Of Regents Of The University Of Washington Adaptive sequential controller
US5430599A (en) * 1993-03-18 1995-07-04 Hydro-Quebec System for opening/closing circuit breakers
DE19507933C1 (de) * 1995-02-24 1996-05-23 Siemens Ag Verfahren zum Betrieb eines elektrischen Leistungsschalters
MX9708859A (es) † 1995-05-15 1998-03-31 Cooper Ind Inc Metodo de control y dispositivo para un actuador de aparato conmutador.
DE19606503C2 (de) * 1996-02-22 2000-04-06 Rowenta Werke Gmbh Verfahren und Schaltungsanordnungen zum Erzielen phasensynchronen Schaltens in der Nähe der Spannungsnulldurchgänge von in Wechselspannungsanlagen liegenden Kontakten
DE19807778C2 (de) * 1998-02-18 2003-08-21 Siemens Ag Verfahren und Vorrichtung zum netzsynchronen Schalten eines Leistungsschalters
DE19937074C1 (de) * 1999-08-04 2001-06-13 Siemens Ag Antriebsanordnung für einen Schalter der Mittel- bzw. Hochspannung und Verfahren zum Bewegen eines ersten Kontaktstückes
DE10127576C1 (de) * 2001-05-30 2003-02-06 Siemens Ag Isolierkörper zur Abstützung einer elektrischen Baugruppe
US6873514B2 (en) * 2001-06-05 2005-03-29 Trombetta, Llc Integrated solenoid system
US6965238B2 (en) * 2003-03-31 2005-11-15 General Electric Company Methods and apparatus for analyzing high voltage circuit breakers
US6850072B1 (en) * 2003-03-31 2005-02-01 General Electric Company Methods and apparatus for analyzing high voltage circuit breakers
CN1945771B (zh) * 2006-10-29 2011-04-20 宝光集团有限公司 户外高压双电源真空断路器
US9037429B2 (en) * 2011-06-06 2015-05-19 Siemens Industry, Inc. Methods and apparatus for measuring the fundamental frequency of a line signal
WO2014158110A1 (fr) 2013-03-25 2014-10-02 Koster Norbert H L Disjoncteur thermo-commandé
US9368266B2 (en) 2014-07-18 2016-06-14 Trumpet Holdings, Inc. Electric solenoid structure having elastomeric biasing member
CN107210153B (zh) * 2014-11-30 2020-03-31 Abb瑞士股份有限公司 用于估计电路断路器的电操作时间的方法
EP3848951A1 (fr) * 2020-01-07 2021-07-14 ABB Power Grids Switzerland AG Système de commande de fonctionnement d'un actionneur de moteur électrique pour disjoncteur moyenne à haute tension
CN113937771A (zh) * 2020-06-29 2022-01-14 北京金风科创风电设备有限公司 风力发电机组变流器滤波电容投切控制方法、装置和系统
DE102022207630A1 (de) 2022-07-26 2024-02-01 Siemens Energy Global GmbH & Co. KG Vorzündeinrichtung für eine Hochspannungs-Vakuumschaltröhre

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3555354A (en) * 1969-03-11 1971-01-12 Gen Electric Alternating current circuit breaker having a control for timing opening relative to the current wave
DE2854092A1 (de) * 1977-12-14 1979-06-28 Hazemeijer Bv Schaltverfahren fuer eine dreiphasige hochspannungsschaltung
EP0222727A1 (fr) * 1985-09-10 1987-05-20 Sprecher Energie Österreich Gesellschaft m.b.H. Dispositif pour minimiser les réactions sur un réseau pendant la commutation d'éléments inductifs et capacitifs d'un réseau haute tension
DD248903A1 (de) * 1985-07-10 1987-08-19 Elektroprojekt Anlagenbau Veb Verfahren zur synchronsteuerung des ausschaltzeitpunktes von wechselstromleistungsschaltern

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3530303A (en) * 1969-04-01 1970-09-22 Ite Imperial Corp Current zero anticipating circuit
US3707634A (en) * 1971-03-31 1972-12-26 Sperry Rand Corp Apparatus for extending contact life of relays utilized for a.c. load switching
US3946277A (en) * 1974-08-28 1976-03-23 Lange George M Zero current switching circuitry
DE2717958B2 (de) * 1977-04-20 1979-06-13 Siemens Ag, 1000 Berlin Und 8000 Muenchen Antriebsvorrichtung für elektrische Schaltgeräte mit Druckkontakten
CA1147839A (fr) * 1979-01-08 1983-06-07 Bertus Griesen Methode de mise en circuit d'un reseau triphase haute tension
DD144328A1 (de) * 1979-06-11 1980-10-08 Ekkehard Anke Verfahren zur synchronsteuerung des ausschaltzeitpunktes von wechselstromleistungsschaltern
GB2069762A (en) * 1980-02-14 1981-08-26 Lyons Claude Ltd Arrangement for controlling the operation of switch contacts
US4922363A (en) * 1985-10-17 1990-05-01 General Electric Company Contactor control system
JPH01122530A (ja) * 1987-11-06 1989-05-15 Mitsubishi Electric Corp 真空遮断器の遮断性能劣化予知装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3555354A (en) * 1969-03-11 1971-01-12 Gen Electric Alternating current circuit breaker having a control for timing opening relative to the current wave
DE2854092A1 (de) * 1977-12-14 1979-06-28 Hazemeijer Bv Schaltverfahren fuer eine dreiphasige hochspannungsschaltung
DD248903A1 (de) * 1985-07-10 1987-08-19 Elektroprojekt Anlagenbau Veb Verfahren zur synchronsteuerung des ausschaltzeitpunktes von wechselstromleistungsschaltern
EP0222727A1 (fr) * 1985-09-10 1987-05-20 Sprecher Energie Österreich Gesellschaft m.b.H. Dispositif pour minimiser les réactions sur un réseau pendant la commutation d'éléments inductifs et capacitifs d'un réseau haute tension

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4105697A1 (de) * 1991-02-21 1992-08-27 Elektro App Werke Veb Synchronisiert schaltendes vakuumschuetz mit einzelantrieb
US5663169A (en) * 1992-08-07 1997-09-02 Merck & Co., Inc. Benzoxazinones as inhibitors of HIV reverse transcriptase
WO1997000531A1 (fr) * 1995-06-19 1997-01-03 Siemens Aktiengesellschaft Dispositif de protection contre les surcharges des contacts de commutation d'un appareil de commutation
US5933303A (en) * 1995-06-19 1999-08-03 Siemens Aktiengesellschaft Device for protection against overload of the switch contacts of a switching device
US11581724B2 (en) 2019-05-16 2023-02-14 Hitachi Energy Switzerland Ag Controlled switching of a circuit breaker
DE102021122028A1 (de) 2021-08-25 2023-03-02 Elpro Gmbh Schaltschloss
WO2023025794A1 (fr) 2021-08-25 2023-03-02 Elpro Gmbh Dispositif de commutation

Also Published As

Publication number Publication date
JPH02260344A (ja) 1990-10-23
EP0384552A3 (fr) 1992-02-26
EP0384552B1 (fr) 1995-05-10
US5119260A (en) 1992-06-02
DE59009039D1 (de) 1995-06-14
DE3905822A1 (de) 1990-08-23

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