EP4123676A1 - Vorrichtung zur unterbrechung eines mittelspannungsstromkreises - Google Patents

Vorrichtung zur unterbrechung eines mittelspannungsstromkreises Download PDF

Info

Publication number
EP4123676A1
EP4123676A1 EP22182272.9A EP22182272A EP4123676A1 EP 4123676 A1 EP4123676 A1 EP 4123676A1 EP 22182272 A EP22182272 A EP 22182272A EP 4123676 A1 EP4123676 A1 EP 4123676A1
Authority
EP
European Patent Office
Prior art keywords
instant
circuit
transition
determining
electrode
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
EP22182272.9A
Other languages
English (en)
French (fr)
Other versions
EP4123676B1 (de
Inventor
Diego Alberto
Philippe Brun
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.)
Schneider Electric Industries SAS
Original Assignee
Schneider Electric Industries SAS
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 Schneider Electric Industries SAS filed Critical Schneider Electric Industries SAS
Publication of EP4123676A1 publication Critical patent/EP4123676A1/de
Application granted granted Critical
Publication of EP4123676B1 publication Critical patent/EP4123676B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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
    • 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
    • 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
    • H01H33/59—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
    • 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 description relates to the field of switching devices for medium voltage electrical circuits.
  • the term "medium voltage” is used in its usual meaning, namely a voltage which is greater than 1,000 volts in alternating current and 1,500 volts in direct current but which does not exceed 52,000 volts in current. AC and 75,000 volts DC.
  • the electrical device comprises three circuits, each connected to a phase of an electrical supply network. The flow of current can be interrupted in each of the three circuits by means of the cut-off device.
  • the disclosure relates in particular to switching devices in which the current is cut by opening a vacuum interrupter arranged in series in each circuit to be interrupted.
  • the vacuum interrupter includes a movable electrode connected to a control rod.
  • the control rod is linked to a control lever.
  • the control lever is movable between two extreme positions defining a constant actuation stroke. By actuating the control lever, the connecting rod is moved and separates the movable electrode from the fixed electrode; which opens the circuit.
  • a position sensor makes it possible to determine the relative position of the connecting rod with respect to at the control lever. The amplitude of the overtravel making it possible to compress the spring can thus be determined. The position sensor thus makes it possible to verify that the overtravel remains sufficient during use of the cut-off device, despite the wear of the contacts of the electrodes of the vacuum interrupter.
  • the action of the control levers of the various circuits is synchronized so that the breaking of the current in each phase of the circuit is as simultaneous as possible.
  • the cut-off device is adjusted, during its manufacture, so that the times of opening of the various circuits, as well as the times of closing of the various circuits are synchronous.
  • the aim is to provide a solution making it possible to detect during normal use a lack of synchronism between the closings, as well as the openings, of the circuit of the different phases. Normal use means that no particular shutdown is necessary.
  • the temporary addition of specific measuring instruments can be avoided, the proposed solution using only measuring sensors already present to provide at least one other function.
  • the breaking device As long as the time lag between the first instant of transition of the first vacuum interrupter and the first instant of transition of the second vacuum interrupter is sufficiently low, it is considered that the operational state of the breaking device is nominal, it that is to say that the synchronism of the breaking device is nominal. In other words, the breaking device has no fault. When the time lag between the first instant of transition of the first vacuum interrupter and the first instant of transition of the second vacuum interrupter is greater than a threshold, that is to say too high, it is considered that the synchronism of the device is abnormal. Thus, the breaking device then has a degraded operation. Based on this determination of the operational state of the breaking device, a corrective action can be taken in order to restore nominal operation.
  • the elastic return member is a spring.
  • the elastic return member may be a coil spring.
  • the first predetermined threshold is between 22.5% and 25% of a period of variation of the voltage of the electrical network.
  • the second predetermined threshold is between 15.0% and 16.5% of a period of variation of the voltage of the electrical network.
  • the control member is linked to an actuating lever that rotates about an axis.
  • the direction of the axis of rotation of the operating lever is perpendicular to the direction of the longitudinal axis of the vacuum interrupter.
  • the actuating lever is linked to the control member by a pivot.
  • the pivot is secured to the control member.
  • the pivot extends along an axis perpendicular to the longitudinal axis and perpendicular to the direction of the axis of rotation of the actuating lever.
  • the third predetermined threshold is greater than 7.
  • the third predetermined threshold is for example equal to 8.
  • the first predetermined duration is between 8 ms and 12 ms, preferably equal to 10 ms.
  • the first regression curve is a first regression line.
  • the second predetermined duration is between 0.8 ms and 1.2 ms, preferably equal to 1 ms.
  • the second regression curve may be a second regression line.
  • the alert signal emitted can be a display of a message on a control screen, or an illumination of an indicator light, or the emission of an audible signal.
  • first element or second element or else first parameter and second parameter, etc.
  • the purpose of this indexing is to differentiate between similar but not identical elements or parameters. This indexing does not imply a priority of an element, or parameter compared to another and one can interchange the denominations.
  • a subsystem comprises a given element, this does not exclude the presence of other elements in this subsystem.
  • a subsystem includes a given element, it is understood that the subsystem includes at least this element.
  • the first instant of transition t1 corresponds to the instant when the movable electrode 6 of the vacuum interrupter 4 of the first circuit 1 comes into contact with the fixed electrode 5 of the vacuum interrupter 4 of the first circuit 1, during of a closing phase of the vacuum bottle 4.
  • the first instant of transition t1′ corresponds to the moment when the mobile electrode 6′ of the vacuum bottle 4′ of the second circuit 2 comes into contact with the 'fixed electrode 5' of the vacuum interrupter 4' of the first circuit 1, during a closing phase of the vacuum interrupter 4'.
  • these steps of the method aim to verify the synchronism of the closing of the first circuit 1 and of the second circuit 2.
  • Ideal synchronism is obtained when the instants of closing between the two circuits are exactly identical.
  • a small difference between the first transition instant t1 and the first transition instant t1' means that satisfactory synchronism is ensured between the two circuits.
  • the first circuit 1 and the second circuit 2 close at sufficiently close times for the time difference between these closing times to allow nominal operation of the electrical device. 40.
  • the time lag between the first transition instant t1 and the first transition instant t1' is thus less than the maximum acceptable value defined by an applicable standard.
  • too great a difference between the first transition instant t1 and the first transition instant t1' means that the first circuit 1 and the second circuit 2 exhibit abnormal synchronism.
  • the difference between the first transition instant t1 and the first transition instant t1′ is in this case too large to allow nominal operation of the electrical device 40.
  • the operation of the device is then not conforms to the applicable standard.
  • Such a difference indicates degraded operation of the electrical apparatus 40, at least during the circuit closing phases.
  • the mobile electrode 6, 6' For each of the circuits 1, 2, the mobile electrode 6, 6' comprises an upper end which is the end facing the fixed electrode 5, 5'.
  • the mobile electrode 6, 6' comprises a lower end which is the end opposite the upper end.
  • the position measuring device 11,11' is configured to measure a relative distance D-r between the control member 7,7' and the lower end of the mobile electrode 6,6'.
  • the first predetermined threshold s1 is between 22.5% and 25% of a period of variation of the voltage of the electrical network.
  • the first predetermined threshold s1 is between 4.5 milliseconds and 5.0 milliseconds when the frequency of the electrical network is 50 Hertz.
  • the period of the mains voltage is then 20 milliseconds.
  • the first predetermined threshold s1 is between 3.75 milliseconds and 4.17 milliseconds when the frequency of the electrical network is 60 Hertz.
  • the period is then about 16.66 milliseconds.
  • the cut-off device 50 is detailed on the figure 2 .
  • the fixed electrode 5.5' and the movable electrode 6.6' are separated by a distance O1, O1' when the movable electrode 6.6' is in the position of maximum opening P1, P1'.
  • This distance O1 of maximum separation of the fixed electrode 5 with respect to the movable electrode 6 is between 8 and 20 millimeters.
  • the distance O1′ of maximum separation of the fixed electrode 5′ relative to the mobile electrode 6′ is between 8 and 20 millimeters.
  • the fixed electrode 5 and the movable electrode 6 are in contact when the movable electrode 6 is in the closed position P2. In the same way, the fixed electrode 5' and the movable electrode 6' are in contact when the electrode mobile 6' is in the closed position P2'.
  • the distance between the movable electrode 6.6' and the fixed electrode 5.5' is zero when the movable electrode 6.6' and the fixed electrode 5.5' are in contact.
  • the movable electrode 6 of the vacuum bulb 4 is movable in translation along a longitudinal axis X.
  • the movable electrode 6 and the fixed electrode 5 are coaxial with axis X.
  • the axis of the vacuum bulb denotes 4 the common longitudinal axis X of the mobile electrode 6 and of the fixed electrode 5.
  • the mobile electrode 6' and the fixed electrode 5' are coaxial with axis X'.
  • the relative distance Dr between the control member 7.7' and the mobile electrode 6.6' is measured along the longitudinal axis X, X' of the mobile electrode 6, 6'.
  • the control member 7, 7' is configured to selectively move the mobile electrode 6, 6' from the maximum open position P1, P1' to the closed position P2, P2' and from the closed position P2 , P2' to the maximum open position P1, P1'.
  • the control member 7, 7' is here rigidly linked to the mobile electrode 6, 6'.
  • the elastic return member 8, 8' is interposed in the mechanical connection between the control member 7,7' and the movable electrode 6,6'.
  • the elastic return member 8.8' is rigidly linked on the one hand to the control member 7.7' and is rigidly linked on the other hand to the mobile electrode 6.6'. Rigid intermediate elements can form part of the mechanical connection between the control member 7.7' and the movable electrode 6.6'.
  • the elastic return member 8.8' is free to deform depending on the forces applied to the control member 7.7' and to the mobile electrode 6.6'.
  • the elastic return member 8 is here a spring. More precisely, the elastic return member 8 is here a helical spring. The helical spring 8 works here in compression.
  • the length of the spring 8 during the use of the cut-off device 50 is always less than the length of the spring 8 when the latter is free. Free means that no end of the spring 8 receives or applies force.
  • the compression of the spring 8,8' makes it possible in particular to ensure a sufficiently high opening speed of the vacuum interrupter, necessary for the extinction of the arc during the separation of the fixed and mobile electrodes on opening.
  • the control member 7 continues to move and deforms the return member elastic 8 until it reaches its second extreme position P4.
  • the potential energy stored by the elastic return member 8 during the closing phase is then restored during the opening phase of the vacuum interrupter 4, which increases the kinetic energy of the control member 7 during an opening stroke of the vacuum interrupter 4.
  • the separation of the movable electrode 6 and the fixed electrode 5 is thus favored by the impulse provided by the elastic return member 8. The performance of the switching device 50 is thus improved.
  • the elastic return member 8 can be in a prestressed state when the control member 7 is in the first extreme position P3.
  • the overtravel of the control member 7 makes it possible, for a given overtravel amplitude, to store more potential energy.
  • this prestressed state means that the forces of inertia to be overcome in order to set in motion all the elements linked to the movable electrode 6 do not cause deformation of the elastic return member 8 before the movable electrode 6 is in contact with the fixed electrode 5.
  • the control member 7.7' is linked to an actuating lever 9.9' rotatable around an axis Y.
  • the direction of the axis of rotation Y of the actuating lever 9.9' is perpendicular to the direction of the longitudinal axis X, X' of the vacuum bottle 4.4'.
  • Actuating lever 9.9' is linked to control member 7.7' by a pivot 10.10'.
  • the pivot 10, 10' is integral with the control member 7.7'.
  • the pivot 10,10' extends along an axis Z perpendicular to the longitudinal axis X and perpendicular to the direction of the axis of rotation Y of the actuating lever 9.
  • each actuation lever 9,9',9" is connected to a control bar 14.
  • a movement of the control bar 14 thus makes it possible to ensure a joint movement of all the actuation levers.
  • the electrical apparatus 40 comprises three circuits 1, 2, 3 constructed in the same way.Each circuit corresponds to a separate phase.
  • the position measuring device 11, 11' comprises a magnetic target 12 mechanically linked to the movable electrode 6 and a position sensor 13 of the magnetic target 12.
  • the position sensor 13 is linked to the control member 7.
  • the magnetic target 12 is, in the example shown, rigidly linked to the movable electrode 6.
  • the position sensor 13 is rigidly linked to the control member 7.
  • the magnetic target 12 is for example a permanent magnet .
  • the position sensor 13 is for example a Hall effect sensor, or a magnetoresistive effect sensor.
  • the control member 7 is included, along the longitudinal axis X, between the elastic return member 8 and an abutment 17 which is rigidly connected to the movable electrode 6. In the example shown, the abutment 17 coincides with the lower end of the movable electrode 6.
  • intermediate parts may be present in the mechanical connection between the stop 17 and the movable electrode 6.
  • the position measuring device 11,11 ' delivers an output signal which can be analog or digital.
  • the refresh rate of the output signal from the position measuring device 11, 11' can be constant.
  • the refresh rate is greater than 10 kHz.
  • the electronic control unit 15 acquires and processes the measurement signals.
  • the duration of an opening or closing phase of a circuit being between 5 and 50 milliseconds, such a sampling frequency provides a sufficient number of samples.
  • the position measuring device 11 may include an indicator rod connected to the mobile electrode 6.
  • the indicator rod is electrically insulating.
  • the indicator rod is for example made of epoxy resin, or of polyester.
  • the magnetic target 12 can be disposed at an axial end of the indicator rod.
  • the indicator rod has not been shown. others types of kinematic connections can be made, as long as they make it possible to measure a relative distance Dr between the control member 7.7' and the mobile electrode 6.6'.
  • the variation of the relative distance D-r between the control member 7 and the mobile electrode 6 is equal to the variation in length of the elastic return member 8.
  • the degree of compression of the elastic return member 8 remains constant. Indeed, the elastic return member 8 presses the control member 7 against the stop 17, as shown schematically in part A of the picture 2 .
  • the degree of compression of the elastic return member 8 can only vary, when the vacuum interrupter 4 is closed, when the mobile electrode 6 and the fixed electrode 5 are in contact.
  • the control member 7 is moved away from the stop 17, as shown schematically in part B of the picture 2 .
  • the relative distance Dr between the control member 7 and the mobile electrode 6 can only vary when the mobile electrode 6 and the fixed electrode 5 are in contact.
  • the analysis of the temporal evolution of the signal delivered by the position measuring device 11 determining the relative distance Dr between the control member 7 and the mobile electrode 6 makes it possible to determine the moment when the mobile electrode 6 enters in contact with the fixed electrode 5.
  • the comparison of the evolution of the signal of each circuit 1,2 thus makes it possible to quantify the time lag between the instant of closure of the first circuit 1 and the instant of closure of the second circuit 2
  • the quality of the synchronism of the closing as well as of the opening of the circuits 1, 2 can be checked during the normal use of the electrical apparatus 40. It is not necessary to interrupt the normal use in order to carry out a diagnosis of the electrical device 40. It is also not necessary to add specific equipment to the diagnosis.
  • the proposed method uses position sensors already present to measure the overtravel, and adds a new functionality.
  • the additional cost of this new functionality is low, since adding a sensor is avoided.
  • Such a position measuring device thus also makes it possible to monitor the quality of the opening and closing synchronism between the various circuits, the origin of which can in particular prevent wear of the contacts of the electrodes of the vacuum interrupter during the use of the cut-off device.
  • the picture 3 illustrates the time evolution of the signal delivered by the position measuring device 11, for each of the three circuits 1,2,3, during a circuit closing race.
  • Curve A1 corresponds to the first circuit 1
  • curve A2 corresponds to the second circuit 2
  • curve A3 corresponds to the third circuit 3.
  • each of the curves exhibits oscillations around a mean value. These oscillations are due to various measurement noises and sampling fluctuations.
  • the signal delivered can be an increasing function of the relative distance Dr between the control member 7 and the mobile electrode 6, or else a decreasing function.
  • the amplitude of the signal delivered decreases when the relative distance Dr between the control member 7 and the mobile electrode 6 decreases.
  • the oscillations visible on the picture 3 correspond to the reactions of the elastic return member of each of the circuits following the impact between the electrodes of the vacuum interrupter.
  • the figure 4 illustrates the time evolution of the signal delivered by the position measuring device 11, for each of the three circuits 1,2,3, during an opening race of the circuits.
  • Curve B1 corresponds to the first circuit 1
  • curve B2 corresponds to the second circuit 2
  • curve B3 corresponds to the third circuit 3.
  • the second transition instant t2 corresponds to the instant when the movable electrode 6 ceases to be in contact with the fixed electrode 5.
  • the second transition instant t2' corresponds to the instant when the movable electrode 6' ceases to be in contact with the fixed electrode 5'.
  • the second transition instant t2, t2' can also be defined by the instant at which the movable electrode 6, 6' leaves the closed position P2, P2'. In other words, the second transition instant corresponds to the opening start instant of each circuit.
  • a small difference between the second transition instant t2 and the second transition instant t2' means that a satisfactory synchronism is ensured between the first circuit 1 and the second circuit 2.
  • the first circuit 1 and the second circuit 2 open at sufficiently close times for the time difference between these opening times to allow nominal operation of the electrical device 40.
  • too great a difference between the second transition instant t2 and the second transition instant t2' means that the first circuit 1 and the second circuit 2 exhibit abnormal synchronism on opening .
  • the second predetermined threshold s2 is between 15.0% and 16.5% of a period of variation of the voltage of the electrical network.
  • the second predetermined threshold s2 is between 3.0 milliseconds and 3.33 milliseconds when the frequency of the electrical network is 50 Hertz.
  • the second predetermined threshold s2 is between 2.5 milliseconds and 2.78 milliseconds when the frequency of the electrical network is 60 Hertz.
  • the curve A1 of the figure 5 illustrates the evolution over time of the relative distance Dr between the control member 7 and the mobile electrode 6 during a closing stroke of the circuit 1.
  • the curve A2 illustrates the same magnitude, plotted for the second circuit 2, and the curve A3 corresponds to the same magnitude for the third circuit 3.
  • the time scale of the figure 5 is dilated with respect to figure 3 and 4 , so as to detail more precisely the temporal evolution of the various signals.
  • the sign of the difference determined changes depending on whether the control member 7 causes the mobile electrode 6 to pass from the open position P1 to the closed position P2 or else that the control member 7 causes the mobile electrode to pass 6 from closed position P2 to open position P1.
  • the use of the absolute value Dev, Dev' of the difference between the last sample acquired xn, xn' and the average determined M, M' allows the same method to be used both for the opening phases and for the closing.
  • the third predetermined threshold s3 is greater than 7.
  • the third predetermined threshold s3 is for example equal to 8. These values of the third predetermined threshold s3 make it possible to guarantee that the normal fluctuations of the output signal of the position measuring device 11 do not cross the threshold s3. Indeed, in steady state the measurement samples are distributed in a substantially normal way, and a difference of more than 7 standard deviations between a sample and the average of the samples cannot be attributed to fluctuations. normals of the measurement signals. The crossing of the threshold value therefore clearly indicates a real change in the relative distance Dr between the control member 7 and the mobile electrode 6, indicating the start of a state transition phase.
  • steady state is meant a state corresponding either to a continuous closing of the circuit, or a continuous opening of the circuit.
  • the instant ts at which the instantaneous signal of the relative distance D-r between the control member 7 and the mobile electrode 6 becomes sufficiently distant by a sufficient number of standard deviations is taken as the first transition instant t1, that is to say as the instant marking the start of the transition phase between an opening and a closing of the cut-off device 50.
  • the time lag between the transition instants t1, t1' thus determined are then used to determine the operational state of the switching device 50, as described previously.
  • the first predetermined duration dp1 is between 8 milliseconds and 12 milliseconds, preferably equal to 10 milliseconds.
  • the first regression curve R1 is a first regression line D1.
  • the first regression line D1 is an equation of the relative distance Dr between the control member 7 and the movable electrode 6 as a function of time, valid over the time range between the threshold instant ts minus the first predetermined duration dp1 and the threshold instant ts.
  • the second predetermined duration dp2 is between 0.8 milliseconds and 1.2 milliseconds, preferably equal to 1 millisecond.
  • the second regression curve R2 is a second regression line D2.
  • the second regression line D2 is an equation of the relative distance Dr between the control member 7 and the mobile electrode 6 as a function of time. This equation is valid over the time range between the threshold instant ts and the threshold instant ts plus the second predetermined duration dp2.
  • Other types of regression curves than a straight line can be used, without changing the principle of this step of the method.
  • the value of the transition instant calculated beforehand from the difference between instantaneous signal and averaged signal is used to model two regression lines D1, D2.
  • Each regression line D1, D2 is applicable to a given time interval, the two time intervals partially overlapping.
  • the instant tc at which the two modeled straight lines D1, D2 intersect is taken in this embodiment as the start t1 of the transition phase between an opening and a closing of the breaking device.
  • the time lag between the transition instants t1, t1' thus determined is then used to determine the operational state of the breaking device 50.
  • the two regression lines D1, D2 have been plotted only for curve A1. The same processing is also performed for curve A2 but has not been plotted.
  • the figure 7 shows the difference between the results obtained by each of the two exposed methods.
  • the figure 7 is an enlargement of the dotted framed area on the figure 6 .
  • the difference between the value ts, found by the first method, and the value tc, found by the second method, is visible on the figure 7 .
  • the second method provides more accurate results but requires more calculations.
  • the calculations implemented by the method can be carried out in real time, or in deferred time.
  • the steps of the method analyzing the time lag between two distinct phases have been described.
  • the process can be generalized to three distinct phases. The instants of transition of each of the three phases are therefore compared two by two.
  • the fixed electrode 5, 5', 5" and the movable electrode 6, 6', 6" are spaced apart.
  • the closed position P2, P2', P2 ", the fixed electrode 5, 5', 5" and the mobile electrode 6, 6', 6" are in contact.
  • the control member 7, 7', 7" is configured to selectively move the mobile electrode 6, 6', 6" from the maximum open position P1, P1', P1" to the closed position P2, P2', P2" and from the closed position P2, P2', P2" to the maximum open position P1, P1', P1".
  • the figures 8 and 9 illustrate the different settings. These steps make it possible to carry out the determination of the operational state of a device for breaking three distinct phases of an electrical network, during the closing of three circuits 1,2,3 corresponding to these three phases.
  • the operational state is nominal if the three time offsets determined are all below a predetermined threshold.
  • the operational state is abnormal as soon as at least one of the three time offsets is greater than the acceptance threshold.
  • the figure 9 illustrates the transition instants determined for each of the three circuits, as well as the differences between these transition instants.
  • times t1' and t1" are very close.
  • the shift Delta1' is thus less than the threshold s1.
  • Time t1 is shifted with respect to times t1' and t1".
  • the offsets Delta1 and Delta1" are greater than the threshold s1.
  • the determination of the operational state can also be carried out when the three circuits are opened.
  • the figure 10 represents, for each of the three circuits, the first regression line and the second regression line.
  • the second transition time t2, t2', t2" corresponding respectively to each of the three circuits is also represented, as well as the differences Delta2, Delta2', Delta2" between the transition times. The operational state can thus be determined.
  • the alert signal emitted can be a display of a message on a control screen, or an illumination of an indicator light, or the emission of an audible signal. This step applies just as well to the determination of an operational state of a cut-off device 50 comprising two circuits as to a cut-off device comprising three circuits.
  • the alert received allows an operator to trigger corrective action on the cut-off device 50, and avoids leaving the electrical device 40 to operate under abnormal conditions that could lead to failures.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Power Engineering (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
  • Measuring Fluid Pressure (AREA)
  • Keying Circuit Devices (AREA)
EP22182272.9A 2021-07-23 2022-06-30 Vorrichtung zur unterbrechung eines mittelspannungsstromkreises Active EP4123676B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR2108042A FR3125655A1 (fr) 2021-07-23 2021-07-23 Dispositif de coupure d’un circuit électrique de moyenne tension

Publications (2)

Publication Number Publication Date
EP4123676A1 true EP4123676A1 (de) 2023-01-25
EP4123676B1 EP4123676B1 (de) 2023-09-06

Family

ID=78049356

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22182272.9A Active EP4123676B1 (de) 2021-07-23 2022-06-30 Vorrichtung zur unterbrechung eines mittelspannungsstromkreises

Country Status (4)

Country Link
US (1) US20230025832A1 (de)
EP (1) EP4123676B1 (de)
CN (1) CN115692053A (de)
FR (1) FR3125655A1 (de)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10260248A1 (de) * 2002-12-20 2004-07-22 Siemens Ag Verfahren zur Bestimmung der Restlebensdauer eines Schaltgerätes und zugehörige Anordnung
DE10260258A1 (de) * 2002-12-20 2004-07-22 Siemens Ag Verfahren und Vorrichtung zur Bestimmung der Restlebensdauer eines Schaltgerätes
US20090144019A1 (en) * 2005-09-21 2009-06-04 Norbert Elsner Method for Determining Contact Erosion of an Electromagnetic Switching Device, and Electromagnetic Switching Device Comprising a Mechanism Operating According to Said Method

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3925722A (en) * 1972-05-01 1975-12-09 Gen Electric Wear indicator for vacuum circuit interrupter
US6002560A (en) * 1998-09-02 1999-12-14 Eaton Corporation Circuit breaker contact wear indicator
US6150625A (en) * 1999-10-12 2000-11-21 Eaton Corporation Vacuum circuit breaker with contact wear indicator tool
US9633808B2 (en) * 2014-10-06 2017-04-25 Eaton Corporation Electrical interruption apparatus with wear indicator
CN107180728B (zh) * 2016-03-11 2020-08-25 Abb瑞士股份有限公司 固封极柱及其组装方法
US11004619B2 (en) * 2018-12-13 2021-05-11 Eaton Intelligent Power Limited Circuit interrupters with non-contact sensor systems for evaluating erosion of electrical contacts and related methods

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10260248A1 (de) * 2002-12-20 2004-07-22 Siemens Ag Verfahren zur Bestimmung der Restlebensdauer eines Schaltgerätes und zugehörige Anordnung
DE10260258A1 (de) * 2002-12-20 2004-07-22 Siemens Ag Verfahren und Vorrichtung zur Bestimmung der Restlebensdauer eines Schaltgerätes
US20090144019A1 (en) * 2005-09-21 2009-06-04 Norbert Elsner Method for Determining Contact Erosion of an Electromagnetic Switching Device, and Electromagnetic Switching Device Comprising a Mechanism Operating According to Said Method

Also Published As

Publication number Publication date
FR3125655A1 (fr) 2023-01-27
EP4123676B1 (de) 2023-09-06
CN115692053A (zh) 2023-02-03
US20230025832A1 (en) 2023-01-26

Similar Documents

Publication Publication Date Title
EP2584575B1 (de) Verfahren zur Diagnose eines Betriebszustands für einen Schütz und Schütz zur Implementierung dieses Verfahrens
EP2513935B1 (de) Verfahren zur steuerung eines geräts für stromschaltung in einem hochspannungsnetz
EP1466336A1 (de) Verfahren zum feststellen von kontaktverschleiss eines elektrischen gerätes
EP0007867B1 (de) Verbesserungen an Vorrichtungen zum Feststellen des Bruchs eines Elements einer elektrischen Schaltung
EP3428666B1 (de) Elektrische schaltvorrichtung und dazugehöriges verfahren zur verschleisserkennung
FR2996693A1 (fr) Compensateur d'energie reactive
EP1557922A1 (de) Differentialschutzvorrichtung mit vereinfachten Einstellmitteln für die Schutzparameter
FR3010531A1 (fr) Procede de determination d'une cause de perte de tension en aval d'un disjoncteur, appareil auxiliaire pour disjoncteur, systeme electrique comportant un disjoncteur et un tel appareil auxiliaire
EP2860743A1 (de) Schaltvorrichtung und Verfahren zum Erkennen eines Fehlers einer solchen Schaltvorrichtung
EP4123676B1 (de) Vorrichtung zur unterbrechung eines mittelspannungsstromkreises
FR3023650A1 (fr) Interrupteur isole par du vide autorisant un test du vide, ensemble d'interrupteur et procede de test
EP1609163B1 (de) Verfahren zur bestimmung des schliessmoments eines unterbrecherschalters auf einer hochspannungsleitung
EP2200055B1 (de) Elektrischer Schalter mit optimiertem Betrieb
FR2837616A1 (fr) Appareil electrique a actionneur piezoelectrique pilote
EP2975622A1 (de) Verfahren zur bestimmung des verschleisses von elektrischen kontakten eines elektrischen schaltgeräts
EP2984671B1 (de) Elektrischer kontaktor und verfahren zur steuerung einer elektromagnetischen spule in einem derartigen kontaktor
WO2017194881A1 (fr) Procédé de commande d'un actionneur et dispositif de commande associé
FR3100654A1 (fr) Module électronique auxiliaire de protection et dispositif de disjonction associé
FR2748869A1 (fr) Procede et dispositif de surveillance automatique de disjoncteur de courant de defaut
EP4105956A1 (de) Vorrichtung zur unterbrechung eines mittelspannungsstromkreises
WO2000063932A1 (fr) Systeme de diagnostic de contact electrique a deplacement mecanique
FR2963858A1 (fr) Dispositif et procede de controle d'une manoeuvre d'un organe mobile d'un sectionneur
FR3101191A1 (fr) Détermination d’un état d’un appareil de coupure
EP4170363A1 (de) Verfahren zur klassifizierung von teilentladungen in einem elektrischen leiter eines elektrischen mittelspannungsgeräts
EP2383758A1 (de) Elektromechanisches Stellglied mit optimierter Funktion, und elektrisches Unterbrechungsgerät, das ein solches Stellglied umfasst

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20230203

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

RIC1 Information provided on ipc code assigned before grant

Ipc: H01H 33/666 20060101ALI20230516BHEP

Ipc: H01H 33/59 20060101ALI20230516BHEP

Ipc: H01H 11/00 20060101ALI20230516BHEP

Ipc: H01H 1/00 20060101AFI20230516BHEP

INTG Intention to grant announced

Effective date: 20230615

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: FRENCH

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602022000454

Country of ref document: DE

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG9D

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20230906

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231207

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230906

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230906

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231206

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230906

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230906

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230906

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231207

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230906

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK05

Ref document number: 1609683

Country of ref document: AT

Kind code of ref document: T

Effective date: 20230906

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230906

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20240106

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230906

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230906

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230906

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230906

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20240106

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230906

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230906

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230906

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230906

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20240108

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230906

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230906

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230906