EP1466336A1 - Procede pour determiner l'usure des contacts d'un appareil interrupteur - Google Patents
Procede pour determiner l'usure des contacts d'un appareil interrupteurInfo
- Publication number
- EP1466336A1 EP1466336A1 EP20020799097 EP02799097A EP1466336A1 EP 1466336 A1 EP1466336 A1 EP 1466336A1 EP 20020799097 EP20020799097 EP 20020799097 EP 02799097 A EP02799097 A EP 02799097A EP 1466336 A1 EP1466336 A1 EP 1466336A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- contacts
- wear
- switching device
- pole
- electromagnet
- 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
Links
- 238000000034 method Methods 0.000 title claims abstract description 21
- 230000005284 excitation Effects 0.000 claims abstract description 36
- 230000033001 locomotion Effects 0.000 claims abstract description 31
- 238000012545 processing Methods 0.000 claims description 37
- 238000005259 measurement Methods 0.000 claims description 23
- 230000007935 neutral effect Effects 0.000 claims description 16
- 238000003860 storage Methods 0.000 claims description 8
- 238000004891 communication Methods 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 4
- 230000011664 signaling Effects 0.000 claims description 3
- 206010011906 Death Diseases 0.000 description 7
- 230000006870 function Effects 0.000 description 6
- 230000008901 benefit Effects 0.000 description 4
- 238000012937 correction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000010891 electric arc Methods 0.000 description 2
- 239000008188 pellet Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/0015—Means for testing or for inspecting contacts, e.g. wear indicator
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/04—Means for indicating condition of the switching device
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/04—Means for indicating condition of the switching device
- H01H2071/044—Monitoring, detection or measuring systems to establish the end of life of the switching device, can also contain other on-line monitoring systems, e.g. for detecting mechanical failures
Definitions
- the present invention relates to a method for determining the wear of pole contacts in a power switch device provided with one or more power poles, in particular in a contactor, a choke or discontactor, or a circuit breaker contactor.
- the invention also relates to a switching device capable of implementing such a method.
- a switching device has, on each power pole, fixed contacts and movable contacts, in order to switch an electrical load to be controlled.
- the pads mounted on these contacts wear more or less during each switching, depending on the current or voltage load. After a high number of switching operations, this wear can lead to a failure of the switch device, the consequences of which can be significant in terms of safety and availability.
- a usual solution consists in systematically changing either the contacts or the entire switch device, after a predetermined number of operations (for example a million operations), without examining the actual wear of the pads. of contacts. This can therefore lead to late interventions if the pellets are already too worn or premature if the pellets are not yet sufficiently worn.
- the ability to be able to determine the actual wear of the contacts in order to deduce therefrom information giving the ' residual service life or information giving the end of life of the pole contacts therefore provides an appreciable advantage in the case of a switching device. performing a large number of maneuvers since it allows the user to be alerted at the desired time and thus to prevent breakdowns or faults likely to occur in an automation installation.
- the residual contact life is determined by calculating a change in contact pressure during a contact opening operation.
- the change in contact pressure is determined by measuring the time between the initial instant of movement of the armature of the control electromagnet and the final instant of contact opening.
- the initial instant is detected by an auxiliary circuit which analyzes the voltage across the electromagnet coil during the opening phase.
- the final instant corresponds to the start of the opening of the contacts of the most worn switching pole and is detected by connecting all the phases to a detection circuit and by measuring the switching voltage as voltage variation at an artificial neutral point of the downstream power lines.
- the present invention aims to determine as simply as possible the wear of the pole contacts of a switching device while avoiding these drawbacks.
- the invention describes a method for determining the wear of pole contacts in a switching device which comprises one or more power poles provided with contacts actuated by a control electromagnet whose movement between an open position and a closed position is controlled by an excitation coil, the contact wear being determined from a travel time of the contact wear stroke.
- the travel time of the contact wear stroke is developed, during a closing movement of the electromagnet, by measuring at least one electrical signal representative of the conductive state of at least one pole of power, by measuring an excitation current flowing in the solenoid coil and calculating the time difference between the instant of contact closure, determined from said electrical signal, and the instant of end of the movement of closing of the electromagnet, determined from said excitation current.
- the instant of closing of the contacts is determined by the appearance of the electrical signal when the pole becomes conductive, and the end of the closing movement of the electromagnet determined by the detection of a minimum of the excitation current. .
- the instant of closing of the contacts of each power pole is determined by the appearance of a main current flowing in the corresponding power pole of the switching device. According to another characteristic, the instant of closing of the contacts of a power pole is determined by the appearance, downstream of the contacts, of a phase / neutral voltage between the corresponding power pole and a neutral point. According to another characteristic, the instant of closing of the contacts of the power poles is determined by the appearance, downstream of the contacts, of a phase / phase voltage between two power poles.
- the measured travel time of the wear stroke is used to determine the contact wear from the drift of this travel time measured compared to an initial travel time of the race. wear stored in memory means of the switch device. The wear of the contacts can also be determined from the comparison of the measured travel time of the wear stroke with a minimum acceptable travel time of the wear stroke stored in the memory means of the switching device.
- the invention also describes a switch device capable of implementing this method.
- a switching device comprises first measuring means delivering at least one primary signal representative of the conductive state of at least one power pole, second measuring means delivering a secondary signal representative of an excitation current flowing in the coil of the electromagnet and a processing unit receiving the primary signal (s) and the secondary signal to implement the method.
- the first measuring means are placed in series on the current lines of the switching device, in order to measure the main currents flowing in the power poles.
- the first measurement means are placed between downstream current lines and a neutral point of the switching device, in order to measure the phase / neutral voltages of the power poles.
- the switch device comprises means for memorizing an initial travel time of the contact wear stroke.
- the processing unit calculates a measured travel time of the contact wear stroke, and compares said measured travel time with the stored initial travel time, in order to determine a residual contact life and / or to give end-of-life information beyond which product performance is no longer guaranteed.
- FIG. 1 shows a functional diagram of a switch device according to the invention comprising first current measurement means
- FIG. 2 details in simplified fashion the operation of a contact pole in a switch device of FIG. 1,
- FIG. 3 represents a series of diagrams showing the evolution of the main currents and of the excitation current during a closing movement of a switching device of FIG. 1.
- An electrical switching device for example of the contactor, contactor-circuit breaker or starter (discontactor) type, comprises one or more power poles.
- the switch device has three power poles P1, P2, P3.
- the switch device comprises upstream current lines (source lines), which establish the electrical continuity between the power supply network and the poles P1, P2, P3, and downstream current lines L1, L2, L3 (lines load) which establish the electrical continuity between the poles of the switch device and an electrical load, generally an electric motor M, which one wishes to control and / or protect thanks to the switch device.
- the upstream current lines are connected or disconnected from the downstream current lines by pole contacts C1, C2, C3.
- the contacts C1, C2, C3 comprise movable contacts disposed on a movable bridge 28 and fixed contacts.
- the movable bridge 28 is actuated by a control electromagnet 20 and by a contact pressure spring 25.
- the control electromagnet 20 comprises a fixed yoke, a movable frame 23, a return spring 26 and an excitation coil 21.
- the closing movement of the movable armature 23 of the electromagnet 20 is generated by the passage of an excitation current Is in the excitation coil 21.
- the excitation coil 21 is supplied by a continuous excitation voltage.
- an interrupter pole switch device has been shown, but it could also be entirely envisaged that the device would have contactor poles.
- the operation of an apparatus with breaking poles is as follows: when no excitation current Is flows in the coil 21 of the electromagnet, the return spring 26 causes the separation between the movable armature 23 and the fixed yoke of the electromagnet.
- the movable frame 23 cooperates mechanically with a mechanical connection 22 not detailed here (such as a pusher) so as to act on the movable bridge 28, thus causing the opening of the contacts by separation of the movable contacts from the fixed contacts.
- the return spring 26 must for this have a force greater than that of the contact pressure spring 25.
- a thickness of the contact pads sufficient in such a way that the end of life of the product is not the consequence of too thin a thickness of the pads, but of a remaining contact wear stroke too small. Indeed, when this wear stroke becomes zero, this means that, when the movable armature 23 has finished its closing movement, the pusher 22 still remains in contact with the movable bridge 28 which hinders the pressure force that must exert the spring 25 to press the movable contacts against the fixed contacts. As the contact pressure is no longer sufficient, it is no longer possible under these conditions to guarantee proper operation of the switch device.
- the wear of the contacts can depend not on the remaining thickness of the pads, but on the remaining wear stroke of the contacts.
- the switching device comprises first measuring means 11, 12, 13, 11 ′ capable of delivering at least one primary signal measuring at least one electrical signal representative of the conductive state of at least one pole of power P1, P2, P3.
- said first measuring means comprise current sensors 11, 12, 13 mounted in series on each downstream current line L1, L2, L3 and each delivering a primary signal, respectively 31.32 , 33, function of a main current Ip flowing in each pole, respectively P1, P2, P3 of the switching device.
- Such current sensors 11, 12, 13 are used with the aim of ensuring in particular protection functions of the thermal fault, magnetic fault or short-circuit fault type in a contactor-circuit breaker.
- the current sensors 11, 12, 13 are for example Rogowski type current sensors.
- the primary signal obtained is actually an image of the derivative of the current Ip, which makes it possible to have an important signal as soon as the current appears, thus facilitating the detection of the instant of appearance of the current Ip. .
- the first measurement means 11 ′ are placed downstream of the contacts C1, C2, C3, between the downstream current lines L1, L2, L3 and a virtual neutral point N of the switch device, so as to deliver primary signals, respectively 31 ', 32 ⁇ 33', function of the phase / neutral voltage of the different power poles, respectively P1, P2, P3.
- the measuring means 11 ′ comprise in known manner, bypassing each pole measured, a first strong resistance, making it possible to lower the intensity of the current, placed in series with a second resistance whose terminal voltage is measured.
- the neutral point N joins the end of the second resistors.
- the measurement means 1 ′ therefore generate primary signals 31 ′, 32 ′, 33 ′, representative of the phase / neutral voltages of the different poles.
- first measurement means capable of measuring a phase / phase voltage between two power poles.
- the primary signals 31, 32, 33 or 31 ', 32', 33 ' are sent to a processing unit 10 of the switching device.
- This processing unit 10 is for example located in an integrated circuit of the ASIC type, mounted on a printed circuit inside the switch device. It can in particular be used to control the control electromagnet 20 as well as, in the case of a contactor-circuit breaker, to control a thermal and / or magnetic trip device.
- the switching device also includes second measurement means 14 for measuring the excitation current Is flowing in the excitation coil 21 of the electromagnet 20.
- the second measurement means 14 may be composed of a resistor connected in series on the control circuit of the coil 21, the voltage of which is measured directly at the terminals. After any analog processing of this measurement, the measurement means 14 therefore generate a secondary signal 34, representative of the excitation current Is, which is sent to the processing unit 10.
- the method which is implemented in the processing unit 10 is based on the following principle:
- the excitation current Is shown diagrammatically by the curve 51, sent to the coil 21 of the electromagnet 20 begins to increase.
- the frame mobile 23 of the electromagnet 20 still remains stationary and the excitation current Is increases, according to a substantially asymptotic curve.
- the excitation coil 21 has stored enough ampere-turns to cause the closing movement of the movable armature 23 to start. From this instant, the air gap of the electromagnet 20 will gradually decrease, which will cause a variation in the reluctance of the magnetic circuit composed of the fixed yoke and the movable armature 23 of the electromagnet 20. This variation in the reluctance causes the excitation current Is to drop. This drop of the excitation current Is continues until an instant C corresponding to the end of the travel of the movable armature 23, that is to say at the end of the closing movement of the electromagnet 20. Au- beyond instant C, the air gap and therefore the reluctance of the electromagnet no longer vary and the excitation current Is begins to increase again, as indicated on curve 51.
- the instant B can be determined on each pole by the appearance, downstream of the contacts, of a phase / neutral voltage measured by the first measuring means 11 'between a pole and the virtual neutral N. Likewise, the instant B could also be detected with a phase / phase voltage measurement between two of the poles of the device, downstream of the contacts.
- the processing unit 10 is capable of detecting the end of the closing movement of the electromagnet, corresponding to the instant C, by detecting the appearance of a minimum of the excitation current Is, represented by a point of reversing on the curve Is of FIG. 3, from the secondary signal 34 received.
- the processing unit 10 is also capable of detecting the instant of closing of the contacts, corresponding to time B, by detecting the appearance of electrical signals representative of the conductive state of the poles (i.e. either main current Ip, or phase / neutral voltage, or phase / phase voltage) from primary signal (s) 31, 32,33 or 31 ', 32', 33 '.
- the processing unit 10 is able to determine the travel time of the contact wear stroke.
- the time T1 between instant A and instant C corresponds to the duration of the closing movement of the movable armature 23 of the electromagnet.
- the time T2 between instant A and instant B corresponds to the duration of the closing movement of the movable bridge 28.
- the difference between T1 and T2, called Tu corresponds to the travel time necessary to carry out the wear stroke of the contacts (also called contact overwriting stroke), between time B and time C, shown diagrammatically in diagram 53. It is obvious that the more the pads of the fixed and / or mobile contacts are worn, the more time T2 is important, and therefore the lower the time Tu.
- filtering or smoothing can easily be carried out by the processing unit 10 in particular by taking into account only average values calculated from a plurality of measurements carried out on a determined number of closing cycles of the electromagnet, for example of the order of a few tens of cycles.
- the information relating to contact wear can include information on the residual life of the contacts, expressed as a percentage, in degrees of wear, etc., and or alert information indicating the end of life of the switch device contacts.
- the processing unit 10 compares the measured travel time Tu of the contact wear stroke with an initial travel time Ti corresponding to an initial wear travel of the contacts. contacts (also called crush stroke in new condition) and monitors the evolution over time of the difference between Tu and Ti.
- This initial travel time Ti corresponds to a calibration value, determined for a given type of electromagnet.
- the processing unit 10 compares the measured travel time Tu of the wear stroke of the contacts with a minimum travel time Tmini corresponding to an acceptable minimum contact wear stroke below which it is no longer possible to guarantee the expected performance of the switch device. This minimum travel time Tmini is also determined for a given type of electromagnet.
- the switch device then has internal storage means
- the storage means 15 connected to the processing unit 10 and capable of storing this initial value Ti and / or this minimum value Tmini.
- the storage means 15 consist for example of a non-volatile memory of the EEPROM or Flash memory type.
- the processing unit 10 and the storage means 15 are installed in the same integrated circuit of the switching device.
- the initial value Ti is stored in the storage means 15 either with a predetermined value during the manufacture of the switching device, or with a first measurement of Tu carried out during the first switching operations of the switching device.
- Ti and Tmini have been determined for example from a nominal speed of the movable part 23 of the electromagnet, and this nominal speed is not necessarily identical to the real speed having served to determine Tu.
- the speed of movement of the movable armature 23 remains substantially constant for a given type of electromagnet of a given caliber.
- the processing unit 10 is easily able to calculate the residual life of the contacts.
- the processing unit 10 is easily capable of giving end-of-life information of the contacts, when Tu becomes less than Tmini, without requiring correction on the measurement of Tu.
- the speed of movement of the movable armature 23 depends not only on the type of electromagnet but also on the supply voltage of the excitation coil (or at least the voltage of average supply seen by the coil in the case of a cut-out control). Indeed, the higher the supply voltage, the greater the actual speed of movement of the movable armature 23 during the movement of closing.
- the switching device has means for measuring this supply voltage. These means are connected to the processing unit 10, allowing the latter to assign a correcting coefficient taking the variations in speed to the measured travel time Tu, before making a comparison with Ti and / or Tmini , so as to obtain better precision in the preparation of information relating to contact wear.
- the processing unit calculates a duration of the take-off phase T3 (see FIG. 3) which corresponds to the time elapsed between a instant O of the appearance of a current Is in the coil and the instant determined by the maximum of the current Is, when the movement of the movable armature 23 starts to start.
- This duration T3 is also a function of the operating temperature of the device and the supply voltage of the coil, one can then make a simple correlation between the variation of the duration T3 and the variation of the speed of the movable armature.
- a correction coefficient can be assigned to the measured travel time Tu, taking into account the variations in speed, in order to obtain better precision in the preparation of the information relating to contact wear.
- the switch device further comprises communication means 18 which make it possible to connect it to a communication bus B, such as a serial link, a field bus, a local network, a global network (of the Intranet or Internet type). Or other.
- a communication bus B such as a serial link, a field bus, a local network, a global network (of the Intranet or Internet type). Or other.
- These communication means 18 are connected to the processing unit 10 so that information relating to the wear of the pole contacts calculated by the processing unit 10 can be transmitted on the communication bus B.
- the switch device also includes signaling means 17 connected to the processing unit 10. These signaling means 17, such as a mini screen or one or more LEDs on the front face of the switch device, allow an operator located close to the switch device to display information relating to the wear of the pole contacts calculated by the processing unit 10.
- the processing unit 10 is responsible for controlling the control electromagnet 20 by means of a control command
- the processing unit 10 is capable of slaving this control command to information end of life of the pole contacts, so as to be able to lock any possibility of closing the power poles of the switch device in the event of excessive wear of the contacts, since this would no longer be able to guarantee the advertised performance of the switch device.
- This provides a very significant additional security function, since the switch device can self-lock in the event of a risk of malfunction.
- the switching device has a current sensor 11, 12, 13 for each of its power poles P1, P2, P3.
- the processing unit 10 then receives as many primary signals 31, 32, 33 as there are poles and is therefore capable of separately detecting the wear of the contacts on each power pole. In this case, the wear of the switch device contacts will be calculated either pole by pole, or by taking the power pole whose contacts are the most worn.
- the switch device does not have a current sensor 11, 12, 13 in each pole P1, P2, P3 of power, but has for example a current sensor only for a single pole.
- the processing unit 10 then receives a single primary signal and is only capable of actually detecting the wear of the contacts of this power pole. In this case, the wear of all the contacts of the switch device will be determined from this single measurement for one pole, without taking into account any disparities between the wear of the different poles.
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
- Keying Circuit Devices (AREA)
- Relay Circuits (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
- Contacts (AREA)
- Multiple-Way Valves (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0117104 | 2001-12-21 | ||
| FR0117104A FR2834120B1 (fr) | 2001-12-21 | 2001-12-21 | Procede pour determiner l'usure des contacts d'un appareil interrupteur |
| PCT/FR2002/004413 WO2003054895A1 (fr) | 2001-12-21 | 2002-12-17 | Procede pour determiner l'usure des contacts d'un appareil interrupteur |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1466336A1 true EP1466336A1 (fr) | 2004-10-13 |
| EP1466336B1 EP1466336B1 (fr) | 2009-07-22 |
Family
ID=8871110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02799097A Expired - Lifetime EP1466336B1 (fr) | 2001-12-21 | 2002-12-17 | Procede pour determiner l'usure des contacts d'un appareil interrupteur |
Country Status (12)
| Country | Link |
|---|---|
| US (1) | US7109720B2 (fr) |
| EP (1) | EP1466336B1 (fr) |
| JP (1) | JP4112497B2 (fr) |
| KR (1) | KR100926394B1 (fr) |
| CN (1) | CN1261951C (fr) |
| AT (1) | ATE437444T1 (fr) |
| DE (1) | DE60233074D1 (fr) |
| ES (1) | ES2327220T3 (fr) |
| FR (1) | FR2834120B1 (fr) |
| NO (1) | NO325543B1 (fr) |
| RU (1) | RU2297065C2 (fr) |
| WO (1) | WO2003054895A1 (fr) |
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| US7596459B2 (en) * | 2001-02-28 | 2009-09-29 | Quadlogic Controls Corporation | Apparatus and methods for multi-channel electric metering |
| DE10345183B4 (de) * | 2003-09-29 | 2005-10-13 | Siemens Ag | Vorrichtung zum Erfassen von Kontaktabbrand in Schaltgeräten |
| DE102005045095A1 (de) * | 2005-09-21 | 2007-04-05 | Siemens Ag | Verfahren zum Bestimmen des Abbrandes von Kontakten eines elektromagnetischen Schaltgerätes und elektromagnetisches Schaltgerät mit einer nach diesem Verfahren arbeitenden Einrichtung |
| FR2891392B1 (fr) * | 2005-09-23 | 2009-03-20 | Schneider Electric Ind Sas | Dispositif de neutralisation d'un appareil electrique interrupteur |
| EP1793235A1 (fr) * | 2005-11-30 | 2007-06-06 | ABB Technology AG | Système de surveillance pour des commutateurs à haute tension |
| FR2901053B1 (fr) * | 2006-05-15 | 2008-10-17 | Schneider Electric Ind Sas | Dispositif electronique de commande pour appareil electromagnetique |
| CN201302605Y (zh) * | 2006-06-26 | 2009-09-02 | Abb技术有限公司 | 能够确定和显示接触部烧损的大功率开关 |
| FR2919109B1 (fr) * | 2007-07-20 | 2009-09-11 | Schneider Electric Ind Sas | Dispositif de detection de position d'une partie mobile dans un appareil electrique interrupteur. |
| US7617739B1 (en) * | 2007-11-08 | 2009-11-17 | Cosense Inc. | Non-invasive ultrasonic system to determine internal pressure in flexible tubing |
| FR2924262B1 (fr) * | 2007-11-26 | 2009-12-11 | Sagem Securite | Procede de masquage de passage en fin de vie d'un dispositif electronique et dispositif comportant un module de controle correspondant |
| FR2942068B1 (fr) * | 2009-02-06 | 2011-01-21 | Schneider Electric Ind Sas | Evaluation de l'usure des contacts grace a un actionneur a double partie mobile. |
| CN101813750B (zh) * | 2009-02-24 | 2014-04-16 | 施耐德电器工业公司 | 接触器磨损老化检测装置及方法 |
| FR2945661A1 (fr) | 2009-05-18 | 2010-11-19 | Schneider Electric Ind Sas | Evaluation de l'usure de contacts enfonces par la variation de la rotation de l'arbre des poles |
| US20110062960A1 (en) * | 2009-09-15 | 2011-03-17 | Lenin Prakash | Device and method to monitor electrical contact status |
| ATE540415T1 (de) * | 2009-11-25 | 2012-01-15 | Abb Research Ltd | Verfahren und vorrichtung zum bestimmen einer abnutzung eines kontaktelements |
| US9048049B2 (en) * | 2011-03-22 | 2015-06-02 | Panasonic Intellectual Property Management Co., Ltd. | Electromagnetic opening/closing device |
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| CN106849442A (zh) * | 2017-04-26 | 2017-06-13 | 合肥巨动力系统有限公司 | 一种可变匝数扁线电机定子绕组 |
| US10340640B2 (en) | 2017-05-04 | 2019-07-02 | Schneider Electric USA, Inc. | System and method for determining the current condition of power contacts |
| CN107334606B (zh) * | 2017-08-11 | 2023-03-31 | 合肥哈工力训智能科技有限公司 | 一种康复机器人关节初始位置检测装置和方法 |
| CN109193353B (zh) * | 2018-09-28 | 2020-05-19 | 全球能源互联网研究院有限公司 | 电弧产生设备及用电触头材料抗电弧烧蚀性能评测方法 |
| JP6973365B2 (ja) | 2018-12-19 | 2021-11-24 | オムロン株式会社 | 継電器状態判定装置、継電器状態判定システム、継電器状態判定方法、およびプログラム |
| JP6988785B2 (ja) | 2018-12-28 | 2022-01-05 | オムロン株式会社 | 継電器状態予測装置、継電器状態予測システム、継電器状態予測方法、およびプログラム |
| EP3885862B1 (fr) * | 2020-03-26 | 2023-07-12 | Siemens Aktiengesellschaft | Procédé de surveillance d'état |
| CN112014779B (zh) * | 2020-07-08 | 2023-06-23 | 中车株洲电力机车研究所有限公司 | 机车变压器励磁异常的诊断方法、电子设备和存储介质 |
| FR3112650B1 (fr) | 2020-07-20 | 2023-05-12 | Schneider Electric Ind Sas | Procédé de diagnostic d’un état de fonctionnement d’un appareil de commutation électrique et appareil de commutation électrique pour la mise en œuvre d’un tel procédé |
| DE102020209645A1 (de) * | 2020-07-30 | 2022-02-03 | Siemens Aktiengesellschaft | Verfahren zur Zustandsbestimmung einer elektrischen Schaltanlage, Überwachungseinheit für eine elektrische Schaltanlage und elektrische Schaltanlage |
| FR3119461B1 (fr) | 2021-02-04 | 2023-07-21 | Schneider Electric Ind Sas | Procédé d’estimation d’un état de fonctionnement d’un appareil de commutation électrique et appareil de commutation électrique pour la mise en œuvre d’un tel procédé |
| CN115112963A (zh) * | 2021-03-19 | 2022-09-27 | 中国电力科学研究院有限公司 | 一种直流开关耗能支路避雷器电寿命预测的方法和系统 |
| CN113344977B (zh) * | 2021-06-29 | 2022-05-27 | 河北工业大学 | 一种基于图像处理的触头压力测量模型构建方法 |
| CN114019366B (zh) * | 2021-11-05 | 2024-01-16 | 苏州迪芬德物联网科技有限公司 | 电器元件触点损耗评估方法 |
| GB2619722A (en) * | 2022-06-13 | 2023-12-20 | L C Switchgear Ltd | Switch condition monitoring |
| CN121412869B (zh) * | 2025-10-29 | 2026-05-12 | 北京汇森通科技有限公司 | 换电柜智能化故障监测方法、装置及存储介质 |
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| SU470875A1 (ru) * | 1972-12-15 | 1975-05-15 | Предприятие П/Я В-2572 | Устройство дл испытаний контактов реле на износ |
| US4319193A (en) * | 1980-05-14 | 1982-03-09 | Northern Telecom Limited | Testing of relays and similar devices |
| SE433546B (sv) * | 1982-10-25 | 1984-05-28 | Asea Ab | Anordning for kontroll av kontaktavbrenning hos en elektrisk apparat anordning for kontroll av kontaktavbrenning hos en elektrisk apparat |
| SU1265872A1 (ru) * | 1983-03-29 | 1986-10-23 | Всесоюзный Научно-Исследовательский,Проектно-Конструкторский И Технологический Институт Низковольтного Аппаратостроения | Способ проведени периодических испытаний коммутационной износостойкости контактора |
| FR2602610B1 (fr) * | 1986-08-08 | 1994-05-20 | Merlin Et Gerin | Declencheur statique d'un disjoncteur electrique a indicateur d'usure des contacts |
| US5488530A (en) * | 1993-04-22 | 1996-01-30 | Mcdonnell Douglas Corporation | System and method for protecting relay contacts |
| FR2725316B1 (fr) * | 1994-09-29 | 1996-11-22 | Gec Alsthom T & D Sa | Circuit d'autosurveillance, notamment d'appareillage electrique et en particulier de disjoncteur haute tension a sf6 |
| US5844331A (en) * | 1994-10-27 | 1998-12-01 | Siemens Aktiengesellschaft | Process for monitoring the wear of at least one contact in a switching device and switching device designed thereof |
| DE19603319A1 (de) * | 1996-01-31 | 1997-08-07 | Siemens Ag | Verfahren zur Bestimmung der Restlebensdauer von Kontakten in Schaltgeräten und zugehörige Anordnung |
| DE19603310A1 (de) * | 1996-01-31 | 1997-08-07 | Siemens Ag | Verfahren zur Bestimmung der Restlebensdauer von Kontakten in Schaltgeräten und zugehörige Anordnung |
| DE19734224C1 (de) * | 1997-08-07 | 1999-02-04 | Siemens Ag | Verfahren und Vorrichtung zur Bestimmung von schaltgerätespezifischen Daten an Kontakten in Schaltgeräten und/oder zur Bestimmung von betriebsspezifischen Daten im damit geschalteten Netz |
| US6466023B2 (en) * | 1998-12-28 | 2002-10-15 | General Electric Company | Method of determining contact wear in a trip unit |
| US6522247B2 (en) * | 2000-05-23 | 2003-02-18 | Kabushiki Kaisha Toshiba | Apparatus monitoring system and apparatus monitoring method |
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2001
- 2001-12-21 FR FR0117104A patent/FR2834120B1/fr not_active Expired - Fee Related
-
2002
- 2002-12-17 AT AT02799097T patent/ATE437444T1/de not_active IP Right Cessation
- 2002-12-17 WO PCT/FR2002/004413 patent/WO2003054895A1/fr not_active Ceased
- 2002-12-17 CN CNB028277473A patent/CN1261951C/zh not_active Expired - Fee Related
- 2002-12-17 DE DE60233074T patent/DE60233074D1/de not_active Expired - Lifetime
- 2002-12-17 EP EP02799097A patent/EP1466336B1/fr not_active Expired - Lifetime
- 2002-12-17 JP JP2003555528A patent/JP4112497B2/ja not_active Expired - Lifetime
- 2002-12-17 US US10/498,348 patent/US7109720B2/en not_active Expired - Lifetime
- 2002-12-17 RU RU2004122421/09A patent/RU2297065C2/ru not_active IP Right Cessation
- 2002-12-17 KR KR1020047009806A patent/KR100926394B1/ko not_active Expired - Lifetime
- 2002-12-17 ES ES02799097T patent/ES2327220T3/es not_active Expired - Lifetime
-
2004
- 2004-07-12 NO NO20042941A patent/NO325543B1/no not_active IP Right Cessation
Non-Patent Citations (1)
| Title |
|---|
| See references of WO03054895A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| RU2004122421A (ru) | 2005-03-27 |
| FR2834120B1 (fr) | 2004-02-06 |
| KR20040071241A (ko) | 2004-08-11 |
| JP4112497B2 (ja) | 2008-07-02 |
| KR100926394B1 (ko) | 2009-11-11 |
| FR2834120A1 (fr) | 2003-06-27 |
| US7109720B2 (en) | 2006-09-19 |
| WO2003054895A1 (fr) | 2003-07-03 |
| CN1618110A (zh) | 2005-05-18 |
| CN1261951C (zh) | 2006-06-28 |
| AU2002364323A1 (en) | 2003-07-09 |
| EP1466336B1 (fr) | 2009-07-22 |
| ATE437444T1 (de) | 2009-08-15 |
| NO20042941L (no) | 2004-09-01 |
| RU2297065C2 (ru) | 2007-04-10 |
| JP2005513729A (ja) | 2005-05-12 |
| ES2327220T3 (es) | 2009-10-27 |
| US20050122117A1 (en) | 2005-06-09 |
| DE60233074D1 (de) | 2009-09-03 |
| NO325543B1 (no) | 2008-06-16 |
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