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WO2020244939A1 - Procédé de détermination de l'état d'une unité d'entraînement pour un dispositif de commutation haute ou moyenne tension et dispositif de commutation haute ou moyenne tension - Google Patents

Procédé de détermination de l'état d'une unité d'entraînement pour un dispositif de commutation haute ou moyenne tension et dispositif de commutation haute ou moyenne tension Download PDF

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Publication number
WO2020244939A1
WO2020244939A1 PCT/EP2020/064314 EP2020064314W WO2020244939A1 WO 2020244939 A1 WO2020244939 A1 WO 2020244939A1 EP 2020064314 W EP2020064314 W EP 2020064314W WO 2020244939 A1 WO2020244939 A1 WO 2020244939A1
Authority
WO
WIPO (PCT)
Prior art keywords
drive unit
vibration pattern
switching device
acceleration sensor
medium voltage
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.)
Ceased
Application number
PCT/EP2020/064314
Other languages
German (de)
English (en)
Inventor
Ivana Mladenovic
Paul Gregor Nikolic
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG, Siemens Corp filed Critical Siemens AG
Publication of WO2020244939A1 publication Critical patent/WO2020244939A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/28—Power arrangements internal to the switch for operating the driving mechanism
    • 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
    • H01H33/42—Driving mechanisms
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2300/00—Orthogonal indexing scheme relating to electric switches, relays, selectors or emergency protective devices covered by H01H
    • H01H2300/052—Controlling, signalling or testing correct functioning of a switch

Definitions

  • the condition of the equipment that is used in the network plays a decisive role in the safe operation of high or medium voltage networks. Therefore, the equipment must be checked and renewed at different intervals but at regular intervals. Economic renewal and maintenance planning require knowledge of the condition of the equipment, which is why a technical review of the condition of the equipment makes a significant contribution to the economic viability of network operation in general.
  • the object of the invention is to provide a method for determining the status of a drive unit for a high or medium voltage switching device and a high or medium voltage switching device per se, which is suitable for generating a technical determination of the status and since the need for mechanical or to avoid or reduce manual intervention in the switching device as far as possible.
  • the object is achieved in a method for determining the status of a drive unit for high or medium voltage switchgear with the features of claim 1 and in a high or medium voltage switchgear with the features of claim 8.
  • the method according to the invention for determining the state of a drive unit for high or medium voltage switching devices comprises the following steps: First, a switching process with the high or medium voltage switching device is carried out. A characteristic vibration pattern for the load-free switching process is recorded, with at least one acceleration sensor being used. This characteristic vibration pattern is then made available in a database.
  • this characteristic vibration pattern makes it possible to keep this vibration pattern, which is recorded in an intact, new or fault-free device, for later comparison measurements.
  • This characteristic vibration pattern can serve as a template for further comparison measurements that are carried out on the same device or on devices of the same construction.
  • the storage of this vibration pattern in a database is suitable so that the operator or the person responsible for maintenance for the high or medium voltage switching device has access to this basic information that is characteristic of the corresponding switching device at any time.
  • a reference vibration pattern can also be created in a reference measurement, a reference switching process. This can be done in turn with the same switching device or with a structurally identical switching device. A comparison is then made between the reference vibration pattern and the characteristic vibration made onsmuster and a state variable of the drive unit is determined.
  • the term state variable is understood to mean any information that can be obtained from the comparison of the two vibration patterns using different methods. For this purpose, for example, a frequency analysis in the form of an FFT (Fast Fourier Transformation) can be carried out.
  • FFT Fast Fourier Transformation
  • the determination mode of the state variable is variable, it can already be specified when the switching device is put into operation, but it can also change at any time during operation due to new findings and new methods. This is possible because the characteristic vibration pattern is recorded during commissioning or shortly thereafter in the case of a fault-free device, which is retained over the entire operating time of the switching device and can be used at any time during the operating time, which can be up to 40 years .
  • the sensor data of the acceleration sensor are recorded by a data processing device arranged on the drive unit and converted into the reference vibration pattern.
  • This direct processing of the sensor data on the device enables the direct evaluation of the reference vibration pattern on site, on the one hand, and the forwarding of this vibration pattern via a data network to a computer system and storage there in the database.
  • the drive shaft is one of the most stressed components in the drive unit and it supplies a characteristic vibration pattern that is particularly easy to evaluate.
  • this is preferably determined in a load-free switching process. This is an off-line measurement method, as the switching device is separated from the mains.
  • an online measurement can also be useful, with the vibration pattern (the characteristic and / or the reference pattern) being recorded during a switching process that is taking place anyway.
  • a diagnosis of the drive system can be carried out during an unplanned switching process outside of fixed maintenance intervals and, if necessary, a prognosis for the further service life can be made.
  • observations of pattern development during the switching processes could also point to errors in the short term.
  • This high or medium voltage switching device has a drive unit for a switching contact, with at least one acceleration sensor being arranged in the area of the drive unit. Furthermore, a control device for the drive unit is provided, which is designed to carry out a preferably load-free shifting process and to record a characteristic vibration pattern for the load-free shifting process with the acceleration sensor and to provide the characteristic vibration pattern in a database.
  • the high or medium voltage switching device according to the invention according to claim 7 has the same advantages that are already tert erläu with respect to claim 1.
  • the term drive unit is understood to mean all mechanical components that are used to drive switching contacts of the high or medium voltage switching device. These include, in particular, the drive itself, which kinematically induces the mechanical movement, the drive rods and the housing.
  • the term control device refers to a device understood, which is suitable on the one hand to control a load-free switching process, this Steuervorrich device not necessarily have to be arranged directly on the switching device. Although this is usually useful, the control device can, however, also be part of a central control device that is connected to the switching device via the data network.
  • the control device can include further sub-devices, for example a data processing device, which evaluates the sensor data and combines them to form the characteristic vibration pattern.
  • the term database is understood to mean an electronic storage medium in which information about the characteristic vibration pattern is stored; in this case the database can be arranged either directly on the switching device itself or directly on the type of control device, but it can also be connected to any location within the data network and thus connected to the medium-voltage switching device, be arranged.
  • FIG. 1 is a schematic representation of a high-voltage or medium-voltage switching device with a drive unit and a control device
  • FIG. 2 shows a recording of a characteristic vibration pattern of a drive unit for a switching device
  • Figure 3 shows a switching device according to Figure 1 with a control device and a connection via a data network to a database
  • FIG. 4 shows a switching device according to FIG. 1 with a connection via a data network to a database and a central station
  • Figure 5 shows a switching device according to Figure 1 with a control device and a connection via a data network to a central station.
  • FIG. 1 a schematic representation of a conventional high-voltage switching device is given, which can also be designed in a similar form as a medium-voltage switching device.
  • the high-voltage switching device 4 comprises three switches 3 arranged on the right, each of which contains switching contacts 20 and is mechanically connected via a single central drive unit 2.
  • the drive unit 2 comprises in particular a drive shaft 16, which is shown schematically in the left of the three switches 3.
  • the drive unit 2 also includes a drive 30, which can be designed, for example, in the form of a spring drive or an electric motor.
  • the drive unit 2 is surrounded by a housing 18.
  • acceleration sensors 8 are arranged on various components of the drive unit 2.
  • At least one acceleration sensor 8 is expedient, but several acceleration sensors 8 can be attached to various components of the drive unit 2 to increase the informative value of the vibration measurement.
  • the drive rod 16 is suitable for receiving an acceleration sensor 8, from which specific and meaningful vibration patterns can be determined.
  • the housing 18 a place at which a vibration pattern can be recorded by information about all components of the drive unit 2 flowing together.
  • the acceleration sensors 8 are suitable for taking up a vibration pattern of the drive unit 2.
  • a characteristic vibration pattern of a brand-new drive unit 2 or of the associated high or medium voltage switching device Brand new is understood to mean that the characteristic vibration pattern 6 is recorded either during final assembly of the switching device 4 or after the switching device has been installed in the field at the network operator's before or shortly after commissioning.
  • a control device 22 is provided, which is shown schematically in FIG. 1 by the box 22. This box 22 is shown a piece away from the drive unit 2, which will be described in detail later. This means that the control device can either be arranged directly on the drive unit 2 or on the switching device 4, but can also be arranged at a distance from this switching device, for example in a control room.
  • the control device 22 in the present embodiment comprises a data processing device 12 and a data transmission device 24.
  • the data processing device 12 is designed to receive raw data on the vibration of the individual components of the drive unit 2 via a connecting line 28 to the control device 22 or to the data processing device 12 contained in it in this case.
  • the data processing device 12 processes this data into the characteristic vibration pattern 6 shown as an example in FIG. 2.
  • the control device 22 or the data transmission device 24, which can be part of the control device 22, then transmits the determined data via a data network 14 to one here database not shown 10 or to a central station 26, likewise not shown in FIG. 1 (see FIG. 3 and FIG. 4).
  • FIG. 2 shows a characteristic vibration pattern of a drive unit 2, for example according to FIG. 1.
  • the data of an acceleration sensor 8, which is attached to the housing 18, is recorded.
  • the time is entered on the X axis, and on the Y axis in positive and negative directions with respect to a zero point.
  • Each characteristic curve shown shows a spatial direction, namely along the X direction, the Y direction and the Z direction.
  • Such a characteristic vibration pattern is now stored in the database 10.
  • a second, not shown here, reference vibration pattern of the switching device 4 or the drive unit 2 of the switching device 4 also recorded during a load-free switching process.
  • This reference vibration pattern not shown here, ideally resembles the characteristic vibration pattern shown in FIG. If there should be deviations in this reference pattern due to aging, the typical frequency analysis methods, for example a corresponding Fourier transformation, are compared. A state variable is determined from this, which is used to make a statement about the technical and mechanical state or the wear and tear of the switching device.
  • this state variable if necessary, several technical pieces of information are included, which can possibly also be determined during the generally very long running time of the switching device in comparison with other switching devices. It is therefore important to record a characteristic vibration pattern of a new switchgear, if possible immediately after or shortly before commissioning.
  • This characteristic vibration pattern 6 helps over the entire service life of the switching device 4, even if it is included further findings to determine the respective state of the switchgear even after a long period of operation.
  • FIG. 3 a representation of a switching device 4 is given which is similar to that in FIG.
  • connection lines 28 to the control device 22 are also provided, the control device 22 also containing a data transmission device 24.
  • Raw data are fed into the data network 14 via this and forwarded to the data processing device 12.
  • the data processing device 12 is part of a central computer unit, which also includes the database 10.
  • the connection shown in FIG. 3 makes it possible, on the one hand, to record the characteristic vibration pattern 6 described and to store it in the database 10.
  • This presen- tation is also suitable for recording the reference vibration pattern, which is also described, after a certain time and for routing it to the database 10 via the data network 14 and the data processing device 12.
  • a comparison between the characteristic vibration pattern 6 and the reference vibration pattern is then carried out in the computer system of the database 10 or also on another computer system, and the aforementioned state variable for predicting the aging process of the drive unit 2 is determined.
  • FIG. 4 a similar embodiment of the switching device 4 with the drive unit 2 and the control device 22 is shown, as has already been described in FIGS. 1 and 3.
  • the difference in FIG. 4 to the aforementioned figures is that the data network in this case takes place at least in part via a wireless network.
  • the data are in turn passed to a computing unit which includes the data processing device 12 and the database 10.
  • the state variable determined there in a further arithmetic unit is in turn also forwarded through the data network 14 to a central station 26.
  • the central station 26 can be, for example, the control room of the network operator.
  • a model is possible, for example, according to which the database 10 and the data processing device 12 are stored in a computing unit of the manufacturer of the switching device 4 and the drive unit 2, and the comparison between the characteristic vibration pattern 6 and the reference vibration pattern and the state variable also takes place there is determined.
  • information on the state variable can be determined by the manufacturer of the switching device and passed on to the operator of the high or medium voltage network.
  • control device 22 contains the data processing device 12 as already in FIG. 1, but in this case the control device also contains the database 10. That is, the characteristic vibration pattern 6 is stored in a computing unit , which is net angeord directly on the switching device 4 and possibly a component of this. All arithmetic operations on which the creation of the characteristic vibration pattern and the reference vibration pattern are based are carried out by the control device 22 or parts thereof. Furthermore, the comparison between the two vibration patterns can also be carried out directly and the state variable can be determined. The state variable determined and calculated in this way can be sent via the data network to the central station, in particular to the control room of the network operator, the data transmission device 24 also integrated in the control device 22 being used. In the central station 26, the state of each individual comparable switching device 4 can then be determined and, if necessary, also controlled via a technical device, an expected work or an exchange of the switching device can be initiated. List of reference symbols

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)

Abstract

L'invention concerne un procédé permettant de déterminer l'état d'une unité d'entraînement (2) pour un dispositif de commutation haute ou moyenne tension (4), comprenant les étapes suivantes : effectuer un processus de commutation hors charge avec un dispositif de commutation haute et moyenne tension (4), enregistrer un modèle de vibration (6) caractéristique au moyen d'au moins un capteur d'accélération (8) pour le processus de commutation hors charge, fournir le modèle de vibration (8) caractéristique dans une banque de données (10).
PCT/EP2020/064314 2019-06-05 2020-05-22 Procédé de détermination de l'état d'une unité d'entraînement pour un dispositif de commutation haute ou moyenne tension et dispositif de commutation haute ou moyenne tension Ceased WO2020244939A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP19178407.3A EP3748660A1 (fr) 2019-06-05 2019-06-05 Procédé de détermination d'état d'une unité d'entraînement pour un appareil de commutation haute ou moyenne tension et appareil de commutation haute ou moyenne tension
EP19178407.3 2019-06-05

Publications (1)

Publication Number Publication Date
WO2020244939A1 true WO2020244939A1 (fr) 2020-12-10

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PCT/EP2020/064314 Ceased WO2020244939A1 (fr) 2019-06-05 2020-05-22 Procédé de détermination de l'état d'une unité d'entraînement pour un dispositif de commutation haute ou moyenne tension et dispositif de commutation haute ou moyenne tension

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WO (1) WO2020244939A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4639596A1 (fr) * 2022-12-22 2025-10-29 Hitachi Energy Ltd Procédé de surveillance d'un état de fonctionnement d'un composant d'un dispositif à haute tension

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140069195A1 (en) * 2012-09-12 2014-03-13 Finley Lee Ledbetter System and method for vibration analysis
US20170047186A1 (en) * 2015-08-13 2017-02-16 Eaton Corporation Component monitoring system with monitory latch assembly
WO2018224155A1 (fr) * 2017-06-08 2018-12-13 Abb Schweiz Ag Dispositif de surveillance pour systèmes de commutation

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140069195A1 (en) * 2012-09-12 2014-03-13 Finley Lee Ledbetter System and method for vibration analysis
US20170047186A1 (en) * 2015-08-13 2017-02-16 Eaton Corporation Component monitoring system with monitory latch assembly
WO2018224155A1 (fr) * 2017-06-08 2018-12-13 Abb Schweiz Ag Dispositif de surveillance pour systèmes de commutation

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