EP1555683A1 - Procédé pour contrôler un disjoncteur - Google Patents

Procédé pour contrôler un disjoncteur Download PDF

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Publication number
EP1555683A1
EP1555683A1 EP04030222A EP04030222A EP1555683A1 EP 1555683 A1 EP1555683 A1 EP 1555683A1 EP 04030222 A EP04030222 A EP 04030222A EP 04030222 A EP04030222 A EP 04030222A EP 1555683 A1 EP1555683 A1 EP 1555683A1
Authority
EP
European Patent Office
Prior art keywords
contacts
time
measured values
recorded
electric motor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP04030222A
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German (de)
English (en)
Inventor
Franz-Josef Dipl.-Ing Körber
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.)
ABB Technology AG
Original Assignee
ABB Technology 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 ABB Technology AG filed Critical ABB Technology AG
Publication of EP1555683A1 publication Critical patent/EP1555683A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • H01H11/0062—Testing or measuring non-electrical properties of switches, e.g. contact velocity
    • 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
    • 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 invention relates to a method for examining a circuit breaker according to the preamble of claim 1.
  • the movable contact piece of a High or medium voltage circuit breaker by means of a controlled electric motor, for example, by means of a stepper motor or servo motor to drive.
  • the electric motor is controlled by a control unit and transmits Data, such as the angular velocity and the position of the rotor, on the control unit.
  • Circuit breakers have a variety of parts that are continuous Wear subject.
  • the pre-contacts of the solid and burn movable contact piece which are also referred to as arcing contacts, due to arcing, which occur during the switching operations for a short time, with the time off.
  • Other, especially moving parts such as the shift rod, which are exposed to high mechanical loads can increase with increasing Operating life and increasing number of operating cycles lose strength.
  • the invention has for its object to provide a method which a Examination of a circuit breaker by simple means allowed.
  • the circuit breaker a switching operation to perform with a predeterminable course of movement.
  • the circuit breaker, the a fixed and a movable contact piece, each with a pre-contact and a main contact is driven by a controllable electric motor.
  • measured values for the drive current of the electric motor and / or for the covered path of the movable contact piece by means recorded a measuring device.
  • an evaluation of the recorded Measured values performed.
  • the recorded Measurements to assess the condition of the contacts or to evaluate the State of the transmission chain used.
  • the switching process can either be a switch-on, ie a movement of the movable, contact piece to the fixed contact piece or a switch-off process, ie a movement of the movable Contact piece away from the fixed contact, act.
  • the achievable with this embodiment of the invention advantages in particular in that for carrying out the method according to the invention no additional gauges and no additional wiring to the one to be examined Circuit breaker needed.
  • the drive current of the electric motor is specified by the control unit and is advantageously also automatically measured by the control unit.
  • the distance traveled by the contact piece is indirectly determinable by the position of the rotor of the electric motor. All to be recorded Measurements are advantageous from the control unit of the electric motor added.
  • the recorded Measured values are stored, for example in the form of a table or database.
  • a data preparation such as a Discretization, digitization or filtering, the measured values conceivable.
  • the duration of a switching operation is comparatively short, in the Usually less than 100 ms.
  • a Movement with a constant compared to normal operation given reduced speed, allowing a switching multiple Seconds takes. Such a slow movement allows a more accurate control of the electric motor and the recording of a higher number of measured values.
  • a particularly descriptive evaluation is obtained by taking from the recorded Measured values for the drive current of the electric motor a current / time diagram is created.
  • the recorded measured values graphically, so that a separate Storage in the form of a table or database is not essential.
  • a diagram allows a comparatively simple visual check by an operator. The created diagram is used to evaluate the State of the contacts or the transmission chain.
  • the invention is by means of the created Current / time diagram of the contact erosion of the pre-contacts of the circuit breaker determined.
  • the contact erosion is determined by determining the time of the first Rise of the drive current determined.
  • a further advantageous embodiment of the invention is recorded by means of Measured values for the drive current of the electric motor or by means of the created a power / time diagram interruption of the transmission chain from Electric motor to the movable contact piece, in particular a breakage of the shift rod, recognized.
  • the measured values can be during a switching process with a course of motion at reduced speed as well as in the Normal operation can be recorded. In particular, such an interruption then detected when the drive current falls below a specified limit.
  • a movement history predetermined with a constant drive current of the electric motor wherein the Drive current is smaller than in normal operation.
  • the Drive current a value of 5% to 20%, preferably 10%, of the value in normal operation given, so a switching process also takes several seconds and it can a higher number of readings are recorded.
  • a particularly descriptive evaluation is obtained by taking from the recorded or stored readings for the distance traveled movable contact a path / time diagram is created.
  • Such Diagram allows a comparatively simple visual verification by an operator.
  • the created diagram is used to evaluate the state of the Contacts.
  • the invention is by means of the created Distance / time diagram of the contact erosion of the pre-contacts of the circuit breaker determined.
  • the contact erosion is determined by determining the time of the first Drop of the slope of the curve determined.
  • a power source is connected to the Circuit breaker applied. Subsequently, a switching operation, in particular a Switching off, carried out. During the switching process, measured values for the current flowing through the circuit breaker and / or for the voltage drop recorded on the switching path. The recorded measurements become used to assess the condition of the contacts
  • the evaluation of the recorded takes place Measured values directly in the control unit of the electric motor.
  • a separate data processing device is provided, which with the Control unit of the electric motor is connected.
  • the of the control unit recorded measured values for the drive current and / or the Path of the movable contact piece from the control unit to the data processing unit transferred, which makes the creation of a diagram.
  • a diagram is created in the control unit and sent to the data processing unit transfer the created graph to a screen graphically displayed or printed.
  • a numerical evaluation of the recorded measured values is also a numerical evaluation of the recorded measured values possible.
  • Numerical evaluation means that the searched sizes, for example the contact erosion of the pre-contacts, from the numerical values of the recorded Measured values are calculated. Similarly, from the numerical values of measured values an interruption of the transmission chain can be detected. Such a numerical evaluation, for example, in the control unit or in a data processing unit connected thereto.
  • FIG. 1 is an arrangement schematically for carrying out the invention Process illustrated.
  • a movable contact piece of a circuit breaker 2 is by means of a transmission chain 6 from a controllable electric motor 4 driven.
  • the transmission chain 6 has in addition to a switching rod for direct drive of the movable contact piece still other components, for example, a gearbox.
  • the electric motor 4 is designed here as a servomotor, it can also be configured without further ado or as a stepping motor.
  • High voltage circuit breakers are for operating voltages of more than 100 kV and operating currents of about 600 A to 3,000 A designed. The The duration of a switching process is usually between 10 and 100 ms.
  • Medium-voltage circuit breakers are for operating voltages of about 1 kV Up to 100 kV and operating currents of about 600 A to 4,000 A designed. The duration a switching process is usually between 10 and 100 ms.
  • the electric motor 4 is driven by a control unit 8, which controls the drive current for the electric motor 4 pretends.
  • the electric motor 4 also transmits data such as Angular velocity and position of the rotor, to the control unit 8. Zur Creation and / or presentation and / or output of created Diagrams a separate data processing device 9 is provided, which is connected to the control unit 8, and to which the control unit 8 transmits data.
  • Each position of the rotor of the electric motor 4 corresponds to a unique position the movable contact piece of the circuit breaker second
  • FIG. 2 shows a current / time diagram which shows the course of a drive current 1a of the electric motor 4 during a switch-on shows.
  • the switch-on process takes place with a movement course with approximately constant speed. The speed is reduced compared to normal operation, and the switch-on, namely from a time T02 to a time T52, lasts several, for example five to ten, seconds.
  • On the abscissa is one Time t and plotted on the ordinate of the drive current la.
  • the said course of motion is controlled by a control of the drive current reached.
  • the electric motor 4 transmits data for the current position of the rotor the control unit 8.
  • the control unit 8 controls the drive current such that the predetermined course of movement is maintained.
  • the movable contact piece is that is, moving at a constant speed towards the fixed contact piece.
  • the power switch 2 is turned off. At time T02 the switch-on process starts. Between the time T02 and a time T12 is to overcome an approximately constant friction, which inter alia of the gearbox, the bushings and the switching chamber of the circuit breaker 2 is caused. This requires a constant torque from the electric motor be applied, which is approximately proportional to the drive current. Of the Drive current is approximately between time T02 and time T12 constant.
  • the contact erosion of the pre-contacts becomes from the period from the time T02 until the time T12, that is, from the time from the start of the power-on until the first rise of the drive current Ia.
  • a bigger one Contact erosion causes the movable contact piece to travel a greater distance to cover the pre-contacts, and that the time span of the Time T02 is greater by the time T12. If this time span one certain predetermined value exceeds, so a wear limit is reached and the contacts are to be replaced.
  • New non-worn pre-contacts will be touched at one time Tn2 instead. This value is known from a measurement that is new has been carried out.
  • the contact burnup can be quantitatively from the time difference T12 - Tn2, ie from the time interval between the time Tn2 and the Time T12, calculate.
  • the contact erosion is obtained by multiplying this Time difference with the given constant speed, with which the movable contact piece is moved towards the fixed contact piece.
  • a wear limit is usually at a contact wear of about two to three millimeters reached.
  • the value of the drive current exceeds a predetermined maximum value Imax, so the electric motor has to overcome increased friction.
  • Imax a predetermined maximum value
  • the evaluation of the size of the drive current for the detection of errors in the Transmission chain 6 is possible both by means of a current / time diagram, which was created at constant, reduced speed, as well as by means of a current / time diagram, which was created in normal operation.
  • a path / time diagram is shown, showing the path of the movable Contact piece of the circuit breaker 2 during a switch-on shows.
  • the drive current which is approximately proportional to the torque of the Electric motor 4 is reduced compared to the normal operation.
  • the drive current has a size of about 100 - 300 A.
  • the Drive current to about 10% of the value in normal operation, ie to about 20 A. reduced.
  • a switch-on process thus takes a multiple of the time duration in the Normal operation is needed, for example, five to ten seconds.
  • the path s of the moving Contact piece is indirectly in this example, the position of the rotor of the Electric motor 4 determined.
  • the path s can also be by means of a separate Wegaufillons be included.
  • the movable contact piece is in one Position S0 in which the power switch 2 is turned off.
  • the switch-on process starts.
  • a constant friction has to be overcome, and it follows a movement with an approximately constant speed. In the diagram is this can be recognized by a straight line with a constant gradient.
  • the movable contact piece is in a position S1, in which the pre-contacts touch. From the time T13 is a overcome additional mechanical resistance, and the movement becomes slowed down.
  • the contact is complete and in the following Period between the time T23 and a time T33 are the Friction and the speed again constant.
  • the movable contact piece is in a position S3 and the main contacts touch each other. It is another mechanical resistance to overcome and the movement slows down. From a time T43, when the contact of the main contacts has been made and the movable contact piece is in a position S4, the friction and the speed the movable contact piece again constant. At a time T53 is located the movable contact piece in a position S5, in which the circuit breaker 2 is turned on.
  • the Kunststoffabbrand the Voruttone is from the period between the time T03 and the time T13, that is, from the time from the beginning of Startup until the first fall of the slope of the curve determined. If the value S1 associated with the time T13, which is the position of the moving contact piece when touching the pre-contacts indicates a certain, exceeds predetermined value, the wear limit is reached.
  • the contact is new, not worn, it will touch at a time 'Tn3 and at a position Sn instead, so there is the contact erosion quantitatively as a difference S1 - Sn, ie as a path between the position S1 and the position Sn.
  • FIG. 4 is a diagram of a dynamic electrical resistance measurement during a shutdown process.
  • the switch-off process is included a movement course with constant, reduced speed instead.
  • a power source is connected to the closed circuit breaker 2, which provides an approximately constant current, For example, DC, feeds.
  • DC a constant current
  • a power source is connected to the closed circuit breaker 2, which provides an approximately constant current, For example, DC, feeds.
  • Id the voltage drop across the Switching distance measured.
  • This voltage drop which is the voltage between the movable and the fixed contact piece is, in the following as Voltage Ud called.
  • Voltage Ud On the abscissa of the diagram is the time t and on the Ordinate are the current Id through the circuit breaker 2 and the voltage Ud am Circuit breaker 2 applied.
  • the curves of the voltage Ud and the current Id during the switch-off process give information about the condition of the pre- and main contacts.
  • the power switch 2 is closed, the voltage Ud is approximately zero and the current Id is maximum.
  • the contact erosion may be from the time T14 to the Time T04 be determined. If this time span is a given, given Value exceeds, so a wear limit is reached and the contacts should be replaced.
  • the path s of the movable contact piece of Circuit breaker 2 can be ordered. From such a diagram are the positions the separation of the pre and main contacts directly readable.
  • a dynamic resistance measurement is also with a switching operation in normal operation or with a course of motion with reduced drive current feasible.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Testing Electric Properties And Detecting Electric Faults (AREA)
EP04030222A 2004-01-15 2004-12-21 Procédé pour contrôler un disjoncteur Withdrawn EP1555683A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004002173 2004-01-15
DE200410002173 DE102004002173A1 (de) 2004-01-15 2004-01-15 Verfahren zur Untersuchung eines Leistungsschalters

Publications (1)

Publication Number Publication Date
EP1555683A1 true EP1555683A1 (fr) 2005-07-20

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EP04030222A Withdrawn EP1555683A1 (fr) 2004-01-15 2004-12-21 Procédé pour contrôler un disjoncteur

Country Status (3)

Country Link
EP (1) EP1555683A1 (fr)
CN (1) CN1645534A (fr)
DE (1) DE102004002173A1 (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1793235A1 (fr) * 2005-11-30 2007-06-06 ABB Technology AG Système de surveillance pour des commutateurs à haute tension
WO2008000105A1 (fr) * 2006-06-26 2008-01-03 Abb Technology Ag Procédé pour déterminer l'érosion des contacts sur un disjoncteur à haut pouvoir de coupure
WO2009046747A1 (fr) * 2007-10-08 2009-04-16 Siemens Aktiengesellschaft Procédé pour contrôler le comportement de déclenchement libre d'un interrupteur de puissance à actionnement électromécanique et dispositif pour mettre en oeuvre ce procédé
WO2009046746A1 (fr) * 2007-10-08 2009-04-16 Siemens Aktiengesellschaft Procédé pour contrôler le comportement de déclenchement libre d'un interrupteur de puissance à actionnement mécanique et dispositif pour mettre en oeuvre ce procédé
EP2510604A1 (fr) * 2009-12-08 2012-10-17 Énergie H.T. International Inc. Détection d'une anormalité d'un interrupteur dans un poste de transformation électrique de haute tension
EP2584575A1 (fr) * 2011-10-21 2013-04-24 Schneider Electric Industries SAS Procédé de diagnostic d'un état de fonctionnement d'un contacteur et contacteur pour la mise en oeuvre dudit procédé.
CN103969576A (zh) * 2014-04-24 2014-08-06 国家电网公司 双接地断路器动特性分析仪
WO2018197328A1 (fr) * 2017-04-26 2018-11-01 HELLA GmbH & Co. KGaA Procédé de détection de panne dans un agencement de commutateurs, dispositif, progiciel informatique et support lisible par ordinateur
EP3575808A1 (fr) * 2018-06-01 2019-12-04 Schneider Electric Industries SAS Procede et dispositif de diagnostic d'usure d'un appareil electrique de coupure, et appareil electrique comportant un tel dispositif
EP3594976A1 (fr) * 2018-07-12 2020-01-15 Schneider Electric Industries SAS Procédé de détection d'une pression de contact insuffisante dans un appareil de coupure, dispositif pour la mise en oeuvre d'un tel procédé, et appareil de coupure comportant un tel dispositif

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CN102169164A (zh) * 2011-02-23 2011-08-31 华东桐柏抽水蓄能发电有限责任公司 检测高压断路器弧触头烧损情况的方法
CN102183728B (zh) * 2011-02-23 2013-10-09 国家电网公司 一种高压断路器电气状况检测方法
EP2662695B1 (fr) * 2012-05-10 2015-07-08 Omicron electronics GmbH Mesure d'une résistance d'un contacteur de commutation d'un disjoncteur électrique
CN110192115A (zh) * 2017-06-19 2019-08-30 Abb瑞士股份有限公司 用于监测断路器的方法和装置以及使用该方法和装置的物联网
CN108716988A (zh) * 2018-05-29 2018-10-30 北京平高清大科技发展有限公司 一种高压开关设备机械状态监测方法及装置

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WO1993023760A1 (fr) * 1992-05-12 1993-11-25 Square D Company Systeme de surveillance du fonctionnement d'un coupe-circuit et systeme d'alarme prevenant d'un besoin de maintenance a titre preventif
US6538347B1 (en) * 1995-05-15 2003-03-25 Mcgraw-Edison Company Electrical switchgear with synchronous control system and actuator
US6124726A (en) * 1997-10-08 2000-09-26 Maschinenfabrik Reinhausen Gmbh Method of monitoring a tap selector
DE19853511A1 (de) * 1998-11-20 2000-06-08 Rwe Energie Ag Verfahren zur zustandsorientierten Instandhaltung von Leistungsschaltern und Meß- und Prüfeinrichtung zur Durchführung des Verfahrens
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Cited By (22)

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Publication number Priority date Publication date Assignee Title
US7405569B2 (en) 2005-11-30 2008-07-29 Abb Technology Ag Monitoring system for high-voltage switches
EP1793235A1 (fr) * 2005-11-30 2007-06-06 ABB Technology AG Système de surveillance pour des commutateurs à haute tension
WO2008000105A1 (fr) * 2006-06-26 2008-01-03 Abb Technology Ag Procédé pour déterminer l'érosion des contacts sur un disjoncteur à haut pouvoir de coupure
DE202007018709U1 (de) 2006-06-26 2009-03-26 Abb Technology Ag Bestimmung und Anzeige des Kontaktabrandes an einem Hochleistungsschalter
WO2009046747A1 (fr) * 2007-10-08 2009-04-16 Siemens Aktiengesellschaft Procédé pour contrôler le comportement de déclenchement libre d'un interrupteur de puissance à actionnement électromécanique et dispositif pour mettre en oeuvre ce procédé
WO2009046746A1 (fr) * 2007-10-08 2009-04-16 Siemens Aktiengesellschaft Procédé pour contrôler le comportement de déclenchement libre d'un interrupteur de puissance à actionnement mécanique et dispositif pour mettre en oeuvre ce procédé
EP2510604A1 (fr) * 2009-12-08 2012-10-17 Énergie H.T. International Inc. Détection d'une anormalité d'un interrupteur dans un poste de transformation électrique de haute tension
EP2510604A4 (fr) * 2009-12-08 2014-07-02 Eht Internat Inc Détection d'une anormalité d'un interrupteur dans un poste de transformation électrique de haute tension
US9733292B2 (en) 2011-10-21 2017-08-15 Schneider Electric Industries Sas Method for diagnosing an operating state of a contactor and contactor for implementing said method
EP2584575A1 (fr) * 2011-10-21 2013-04-24 Schneider Electric Industries SAS Procédé de diagnostic d'un état de fonctionnement d'un contacteur et contacteur pour la mise en oeuvre dudit procédé.
FR2981787A1 (fr) * 2011-10-21 2013-04-26 Schneider Electric Ind Sas Procede de diagnostic d'un etat de fonctionnement d'un contacteur et contacteur pour la mise en oeuvre dudit procede
CN103969576A (zh) * 2014-04-24 2014-08-06 国家电网公司 双接地断路器动特性分析仪
WO2018197328A1 (fr) * 2017-04-26 2018-11-01 HELLA GmbH & Co. KGaA Procédé de détection de panne dans un agencement de commutateurs, dispositif, progiciel informatique et support lisible par ordinateur
CN110546730A (zh) * 2017-04-26 2019-12-06 黑拉有限责任两合公司 用于在开关组件中进行故障检测的方法、设备、计算机程序产品和计算机可读介质
US11935718B2 (en) 2017-04-26 2024-03-19 HELLA GmbH & Co. KGaA Method for detecting faults in a switch assembly, device, computer program product, and computer-readable medium
EP3575808A1 (fr) * 2018-06-01 2019-12-04 Schneider Electric Industries SAS Procede et dispositif de diagnostic d'usure d'un appareil electrique de coupure, et appareil electrique comportant un tel dispositif
FR3082005A1 (fr) * 2018-06-01 2019-12-06 Schneider Electric Industries Sas Procede et dispositif de diagnostic d'usure d'un appareil electrique de coupure, et appareil electrique comportant un tel dispositif
JP2020012813A (ja) * 2018-06-01 2020-01-23 シュネーデル、エレクトリック、インダストリーズ、エスアーエスＳｃｈｎｅｉｄｅｒ Ｅｌｅｃｔｒｉｃ Ｉｎｄｕｓｔｒｉｅｓ Ｓａｓ 電気スイッチング・ユニットの摩耗を診断するための方法およびデバイス、ならびにそのようなデバイスを備える電気ユニット
US11079435B2 (en) 2018-06-01 2021-08-03 Schneider Electric Industries Sas Method and device for diagnosing wear of an electrical switching unit, and electrical unit comprising such a device
EP3594976A1 (fr) * 2018-07-12 2020-01-15 Schneider Electric Industries SAS Procédé de détection d'une pression de contact insuffisante dans un appareil de coupure, dispositif pour la mise en oeuvre d'un tel procédé, et appareil de coupure comportant un tel dispositif
FR3083915A1 (fr) * 2018-07-12 2020-01-17 Schneider Electric Industries Sas Procede de detection d'une pression de contact insuffisante dans un appareil de coupure, dispositif pour la mise en œuvre d'un tel procede, et appareil de coupure comportant un tel dispositif
US11211218B2 (en) 2018-07-12 2021-12-28 Schneider Electric Industries Sas Method for detecting insufficient contact pressure in a switching unit, device for implementing such a method, and switching unit including such a device

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