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EP3373317A1 - Procédé de fermeture d'un disjoncteur mécatronique - Google Patents

Procédé de fermeture d'un disjoncteur mécatronique Download PDF

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Publication number
EP3373317A1
EP3373317A1 EP17290034.2A EP17290034A EP3373317A1 EP 3373317 A1 EP3373317 A1 EP 3373317A1 EP 17290034 A EP17290034 A EP 17290034A EP 3373317 A1 EP3373317 A1 EP 3373317A1
Authority
EP
European Patent Office
Prior art keywords
closing
branch
circuit breaker
transmission link
power transmission
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Withdrawn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
EP17290034.2A
Other languages
German (de)
English (en)
Inventor
Yang Yang
Wolfgang Grieshaber
Dan-Lucius Penache
Bruno Lefebvre
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.)
General Electric Technology GmbH
Original Assignee
General Electric Technology GmbH
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 General Electric Technology GmbH filed Critical General Electric Technology GmbH
Priority to EP17290034.2A priority Critical patent/EP3373317A1/fr
Priority to PCT/EP2018/055363 priority patent/WO2018162421A1/fr
Publication of EP3373317A1 publication Critical patent/EP3373317A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/666—Operating arrangements
    • H01H33/6661—Combination with other type of switch, e.g. for load break switches
    • 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
    • H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
    • H01H33/045—Means for extinguishing or preventing arc between current-carrying parts for arcs formed during closing
    • 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
    • H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
    • H01H33/16—Impedances connected with contacts
    • H01H33/166—Impedances connected with contacts the impedance being inserted only while closing the switch
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/54—Circuit arrangements not adapted to a particular application of the switching device and for which no provision exists elsewhere
    • H01H9/548—Electromechanical and static switch connected in series

Definitions

  • the invention concerns the field of direct current (DC) transmission networks. Particularly, the invention relates to different possible sequencing scenarios for closing a mechatronic circuit breaker (MCB) in order to restore the power flow.
  • DC direct current
  • MBC mechatronic circuit breaker
  • HVDC high-voltage direct current
  • the patent application [1] in the name of the applicant of the present invention, describes a Mechatronic Circuit Breaker Device ("MCB") able to break currents in a time less than a few milliseconds.
  • the MCB comprises a main branch which comprises at least one semiconductor component breaker cell electrically in parallel with an energy absorber and with at least one mechanical switch-disconnector capable firstly of passing the steady current in its closed position with minimum insertion losses, thus avoiding high losses in the semiconductor breaker component(s), and secondly of withstanding the recovery voltage at the terminals of the device in its open position.
  • power flow restoration shall depend on the state of the power transmission link (e.g. cable, overhead line, gas insulated line) fed by the mechatronic circuit breaker, and in particular the circumstances under which the current breaking occurred, in order to avoid or limit the disturbances on the network, and to not permanently damage the mechatronic circuit breaker.
  • the power transmission link e.g. cable, overhead line, gas insulated line
  • An aim of the invention is thus to define different scenarios for closing a mechatronic circuit breaker that can be employed to restore the power flow.
  • Another aim of the invention is also to define different scenarios for closing a mechatronic circuit breaker that can be implemented, without any modification, on an existing mechatronic circuit breaker.
  • Another aim of the present invention is also to define a method for charging a power transmission link supplied by the mechatronic circuit breaker.
  • Another aim of the present invention is also to define a method for detecting a fault present on the power transmission link supplied by the mechatronic circuit breaker.
  • the aforementioned aims are, at least partly, attained by method for closing a mechatronic circuit breaker, the mechatronic circuit breaker having a main branch adapted for conducting a nominal load current to a power transmission link, the main branch comprising at least one main module with at least one sub-branch comprising at least one mechanical switch-disconnector connected in series with at least one breaker cell constituted of at least one power semiconductor element with controlled duty ratio, the main branch being connected in series with a pre-insertion module, the pre-insertion module comprising a pre-insertion resistance in parallel with a by-pass switch, the mechatronic circuit breaker and the pre-insertion module forming an assembly having a first terminal and a second terminal, respectively connected to a source and the power transmission link, the method comprising the following steps:
  • the voltage difference is repeatedly measured before triggering the step a) of closing the at least one mechanical switch-disconnector.
  • the predetermined first threshold voltage is a first withstand voltage of the at least one power semiconductor element with controlled duty ratio
  • the method being further characterized in that the steps a) and b) are carried out almost simultaneously, and the step c) of closing the at least one power semiconductor element with controlled duty ratio is triggered upon completion of step a).
  • the predetermined first threshold voltage is the sum of a first withstand voltage of the at least one power semiconductor element with controlled duty ratio and a second voltage corresponding to the product of an electrical resistance of the pre-insertion resistance by a making current of the at least one mechanical switch-disconnector, the method being further characterized in that step c) is triggered when the current flowing through the main branch is below a current threshold and the step b) is carried out upon completion of step c).
  • the mechatronic circuit breaker further comprises a first temporization branch in parallel with the main branch, the first temporization branch comprising, in series, a first thyristor and at least one first switching-assistance module with at least one first capacitor, electrically in parallel with a first discharge resistance and a first voltage surge arrester, the method being characterized in that the first temporization branch and the at least one mechanical switch-disconnector are closed simultaneously during step a), then step c) of closing the at least one power semiconductor element with controlled duty ratio before the current flowing through the first thyristor falls below a holding current of said thyristor, and successively discharge the at least one first capacitor, and perform step b).
  • the discharge of the at least one first capacitor is carried out by closing a switch in series with the first discharge resistance.
  • the predetermined first threshold voltage is a first withstand voltage of the at least one power semiconductor element with controlled duty ratio.
  • the current flowing through the first thyristor is repeatedly measured at least before carrying out the step c) of closing the at least one power semiconductor element with controlled duty ratio.
  • the aforementioned aims are, at least partly, attained by a method for closing a mechatronic circuit breaker, the circuit breaker having a main branch adapted for conducting a nominal load current to a power transmission link, the main branch comprising at least one main module with at least one sub-branch comprising at least one mechanical switch-disconnector connected in series with at least one breaker cell constituted of at least one power semiconductor element with controlled duty ratio, the main branch being connected in series with a first switch, the mechatronic circuit breaker and the first switch forming an assembly having a first terminal and a second terminal, respectively connected to a source and the power transmission link, the method comprising the following steps :
  • the main branch is also connected in series with a pre-insertion module, the pre-insertion module comprising a pre-insertion resistance in parallel with a by-pass switch, the mechatronic circuit breaker, the first switch and the pre-insertion module forming an assembly having, as terminals, the first terminal and the second terminal, the method being characterized in that, after step b) completion, the method comprises the following steps:
  • the step c) of fault detection on the power transmission link involves the repeated measurement of a voltage difference between the first and the second terminals.
  • the voltage difference between the first and the second terminals is above the sum of a first withstand voltage of the at least one power semiconductor element with controlled duty ratio and a second voltage corresponding to the product of an electrical resistance of the pre-insertion resistance by a making current of the main branch.
  • the aforementioned aims are, at least partly, attained by a method for closing a mechatronic circuit breaker, the circuit breaker having a main branch adapted for conducting a nominal load current to a power transmission link, the main branch comprising at least one main module with at least one sub-branch comprising at least one mechanical switch-disconnector connected in series with at least one breaker cell constituted of at least one power semiconductor element with controlled duty ratio, the at least one mechanical switch-disconnector comprises, in series, a plurality of disconnecting modules, each disconnecting module comprises, in parallel, a mechanical switch and a disconnecting surge arrester, each disconnecting module being also adapted to withstand, at its terminals, a second withstand voltage, the main branch being connected in series with at least one pre-insertion module, the pre-insertion module comprises a pre-insertion resistance in parallel with a by-pass switch, the mechatronic circuit breaker and the pre-insertion module forming an assembly having two terminals said first terminal and second terminal, respectively connected to a source and
  • the product of the number of unclosed mechanical switches by the second withstand voltage is as close as possible to the voltage difference between the first and the second terminals.
  • the aforementioned methods for closing the mechatronic circuit breaker initially comprise a charging of the power transmission link.
  • the charging of the power transmission link involves a step a1) of closing a first temporization branch in parallel with a main branch, and which comprises, in series, a first thyristor and at least one first switching-assistance module with at least one first capacitor, electrically in parallel with a first discharge resistance and a first voltage surge arrester, the closing of the first temporization branch comprising the switching on of the first thyristor so that the at least one first capacitor charges.
  • the charging of the power transmission link further comprises a step a2) of waiting until the current flowing through the first temporization branch reaches zero, and then a step a3) of fault detection on the power transmission link.
  • the step a3) comprises the repeated measurements of the voltage difference between the first and the second terminal.
  • the mechatronic circuit breaker further comprises an arming branch in parallel with the main branch, and which comprises, in series, a third thyristor and at least one third switching-assistance module with at least one third capacitor, electrically in parallel with a third discharge resistance (DR3), the method being characterized in that the stopping of the closing of the mechatronic circuit breaker comprises the following steps:
  • the charging of the power transmission link further comprises a step a7) of discharging the at least one first capacitor after the first thyristor stops conducting.
  • the charging of the power transmission link involves a step a11) of closing an arming branch in parallel with main branch, and which comprises, in series, a third thyristor and at least one third switching-assistance module with at least one third capacitor, electrically in parallel with a third discharge resistance, the closing of the arming branch comprises the switching on of the third thyristor so that the at least one third capacitor charges.
  • the charging of the power transmission link further comprises a step a12) of waiting until the current flowing through the arming branch reaches zero, and then a step a13) of fault detection on the power transmission link at least while the arming branch is closed.
  • the step a13) comprises the repeated measurement of the voltage difference between the first and the second terminals.
  • the charging of the power transmission link further comprises a step a14) of discharging the at least one third capacitor after the third thyristor stops conducting.
  • the invention proposes the closing of a Mechatronic Circuit Breaker (MCB) for restoring power flow in a power transmission link connected to a terminal of said MCB.
  • MCB Mechatronic Circuit Breaker
  • the method for closing the MCB is implemented on a MCB having a main branch M as described in the patent application [1], in the name of the applicant of the present invention.
  • the MCB has two terminals, said first terminal 111 and second terminal 112 ( FIG. 1 ), respectively connected to a supply power transmission link S (hereafter “source S”) and a fed power transmission link C (hereafter “power transmission link C").
  • source S supply power transmission link
  • power transmission link C fed power transmission link C
  • the main branch M when the main branch M is closed, the supply power transmission link S provides power to the power transmission link C via said main branch M.
  • the main branch M is adapted for conducting a nominal load current to a power transmission link C.
  • FIG. 1 depicts an overall electrical architecture of a mechatronic circuit-breaker 10 comprising the main branch M.
  • the main branch M comprises at least one main module.
  • the description is limited to a main branch M which comprises only one main module, but a plurality of identical main modules connected in parallel or in series can be considered and fall within the scope of the present invention.
  • the main branch M comprises at least one mechanical switch-disconnector UFS electrically in series with two breaker cells 101a, 101b ( Figure 2 ).
  • the breaker cells 101a and 101b are constituted, respectively, of at least one power semiconductor element with controlled duty ratio 1010a and 1010b.
  • the breaker cells 101a, 101b may preferably be mounted at the end of the main branch M on either side of the mechanical switch-disconnector UFS.
  • the mechanical switch-disconnector UFS may comprise at least one disconnecting module.
  • the mechanical switch-disconnector comprises, in series, a plurality of disconnecting module DM1, DM2, ..., DMn.
  • Each disconnecting module DM1, DM2,..., DMn of the plurality of disconnecting modules can comprise a mechanical switch MS1, MS2, ..., MSn.
  • each disconnecting module DM1, DM2,..., DMn of the plurality of disconnecting modules can comprise, in parallel, a mechanical switch MS1, MS2, ..., MSn and a disconnecting surge arrester DSA1, DSA2, ..., DSAn,
  • the mechanical switch MS1, MS2, ..., MSn can comprise a switch, typically having a breaking capacity that can reach an alternating current of a few kA.
  • Each disconnecting module being also adapted to withstand, at its terminals, a voltage ⁇ U DM .
  • the mechanical switch disconnector UFS can comprise 4 to 8 disconnecting modules DM1, DM2,..., DMn, each having a withstand voltage ⁇ U DM in the 20 kV to 80 kV range.
  • the mechanical switch-disconnector UFS is depicted in figures 5, 5Aand 6 , and described in ⁇ [178]-[189] of the patent application [1] cited at the end of the description.
  • Each of the at least one power semiconductor element with controlled duty ratio 1010a and 1010b may comprise silicon-based insulated gate bipolar transistors (IGBT). They may equally be components based on silicon carbide, currently at the development stage, such as JFET/BJT hybrid transistors, or even GTO thyristors.
  • IGBT insulated gate bipolar transistors
  • the breaker cell 101a can be constituted of an insulated gate bipolar transistor (IGBT) 1010a mounted in anti-parallel with a diode 1011b.
  • the breaker cell 101b can be constituted of an insulated gate bipolar transistor (IGBT) 1010b mounted in antiparallel with a diode 1011a.
  • Each breaker cell 101a, 101b can be connected in parallel with a respective voltage surge arrester 103a, 103b designed to limit the voltage to a value less than the withstand voltage of the IGBT transistor 1010a, 1010b.
  • a respective voltage surge arrester 103a, 103b designed to limit the voltage to a value less than the withstand voltage of the IGBT transistor 1010a, 1010b.
  • the breaker cells 101a and 101b can be connected in parallel, respectively, with snubbers 104a and 104b.
  • a snubber 104a, 104b may comprise in series a capacitor and discharge resistor.
  • Other configurations may be contemplated and in particular the one described in ⁇ [0127] of the document [1] cited at the end of the description.
  • the main branch M may be connected in series with at least one pre-insertion module P1 so that the mechatronic circuit breaker 10 and the pre-insertion module P1 form an assembly having the two terminals said first terminal 111 and second terminal 112.
  • the pre-insertion module P1 may comprise a pre-insertion resistance Rins in parallel with a by-pass switch S2.
  • pre-insertion modules are in series.
  • the user may select a specific pre-insertion module among the plurality of pre-insertion modules either for the closing or the current interruption procedure.
  • the user may select a pre-insertion module for which the pre-insertion Rins is the most appropriate for circulating a specific current.
  • the main branch M may be connected in series with a first switch S1.
  • the mechatronic circuit breaker 10 and the first switch S1 then form an assembly having the two terminals, said first terminal 111 and second terminal 112.
  • the first terminal 111 and second terminal 112 are, respectively, connected to the source S and the power transmission link C.
  • the second terminal 112 can correspond to a terminal of the first switch S1.
  • Both the pre-insertion module P1 and the first switch S1 can also be considered in combination.
  • the mechatronic circuit breaker 10 may optionally comprise a first temporization branch T1 in parallel with the main branch M ( figures 1 and 3 ).
  • the first temporization branch T1 may comprise, in series, at least a first thyristor THY1 and at least one first switching-assistance module with at least one first capacitor C1, electrically in parallel with a first discharge resistance DR1 and a first voltage surge arrester SA1.
  • the first temporization branch T1 may further comprise a switch ST1 in series with the first discharge resistance DR1, so that the assembly comprising the switch ST1 and the first discharge resistance DR1 is in parallel with the first capacitor C1.
  • the mechatronic circuit breaker may further comprise a second temporization branch T2 in parallel with the first temporization branch T1 ( figure 1 and 4 ).
  • the second temporization branch T2 may comprise, in series, at least a second thyristor THY2 and at least one second switching-assistance module with at least one second capacitor C2, electrically in parallel with a second discharge resistance DR2 and a second voltage surge arrester SA2.
  • the second temporization branch T2 may further comprise a switch ST2 in series with the second discharge resistance DR2, so that the assembly comprising the switch ST2 and the second discharge resistance DR2 is in parallel with the second capacitor C2.
  • the first temporization branch T1 performs the diversion of the current for sufficient time for the at least one mechanical switch-disconnector UFS to begin to open and to be able to withstand a first voltage level, and to ensure a voltage drop sufficiently small not to lead to conduction in the voltage surge arresters 103a, 103b connected in parallel to the power semiconductor components 1010a, 1010b of the main branch M.
  • the first temporization branch T1 also ensures a voltage drop sufficiently high to facilitate the switching of the current to the second temporization branch T2 at the appropriate time, and a storing of a voltage sufficient to turn off its own power in the first thyristor THY1 when the second temporization branch T2 begins to conduct.
  • the mechatronic circuit breaker 10 may further comprise an arming branch Arm ( figures 1 and 5 ) in parallel with the main branch M, and which comprises, in series, at least a third thyristor THY3 and at least one third switching-assistance module with at least one third capacitor C3, electrically in parallel with a third discharge resistance DR3.
  • the arming temporization branch Arm may further comprise a switch ST3 in series with the third discharge resistance DR3, so that the assembly comprising the switch ST3 and the third discharge resistance DR3 is in parallel with the third capacitor C3.
  • the mechatronic circuit breaker may further comprise an extinction branch Ex, in parallel with the arming branch Arm, which comprises a third surge arrester SA3 ( figure 1 ).
  • the second temporization branch T2 performs the diversion of the current from the first temporization branch T1 to itself once the at least one mechanical switch-disconnector UFS has reached a first level of opening and for the time necessary for the at least one mechanical switch-disconnector UFS to acquire the dielectric strength necessary to be able to withstand the interruption voltage at the first 111 and the second 112 terminals.
  • the second temporization branch T2 also ensures a voltage drop sufficiently low not to lead to dielectric breakdown of the at least one mechanical switch-disconnector USF.
  • the second temporization branch T2 further ensures a voltage drop sufficiently high to facilitate switching of the current present in said second temporization branch T2 to the arming branch Arm at the appropriate time, and to store a sufficient voltage and energy to turn off power of the second thyristor THY2 when the arming branch Arm begins to conduct.
  • the arming branch Arm ensures the insertion of a variable instantaneous impedance into the circuit.
  • the instantaneous impedance may be defined as the ratio of the instantaneous voltage at its terminals to the instantaneous current that flows through it.
  • the closing of the mechatronic circuit breaker 10 comprises a first step a) of closing the mechanical switch-disconnector UFS.
  • the mechatronic circuit breaker 10 comprises the pre-insertion module P1. If the switch S1 is considered, it is in a conducting state ("closed").
  • the by-pass switch S2 is in a non-conducting state ("open").
  • the closing of the mechanical switch-disconnector UFS is triggered by a specific instruction or order of closing communicated to said mechanical switch-disconnector UFS by a controller or an electronic card or a computer or any other electronic device.
  • the voltage difference ⁇ U is repeatedly measured, and compared with the predetermined first threshold voltage ⁇ Ut before triggering step a).
  • the method for closing the mechatronic circuit breaker 10 further comprises the following steps:
  • Steps b) and c) are triggered by communicating a specific instruction or an order of closing to the by-pass switch S2 and to the at least one power semiconductor element with controlled duty ratio 1010a, 1010b.
  • the specific instruction or the order of closing can be communicated by a controller or an electronic card or a computer or any other electronic device.
  • the predetermined first threshold voltage is a voltage for which arcing is prevented or at least limited so that no contact welding of the mechanical switches MS1, MS2, ..., MSn occur.
  • the predetermined first threshold voltage may depend on the closing sequence, in particular on the order of the steps for closing the mechatronic circuit breaker. The determination of the predetermined first threshold voltage is within the knowledge of the man skilled in the art and is not further discussed in the present application.
  • the predetermined first threshold voltage ⁇ Ut is a first withstand voltage ⁇ U 100 of the at least one power semiconductor element with controlled duty ratio 1010a, 1010b.
  • the first withstand voltage ⁇ U 100 is less than 5%, preferably less than 1%, of the maximum withstand voltage of the mechatronic circuit breaker 10.
  • steps a) and b) are carried out, almost simultaneously, and the step c) of closing the at least one power semiconductor element with controlled duty ratio 1010a, 1010b is triggered upon completion of step a).
  • the closing time t1 upon reception of a closing order, of the mechanical switch-disconnector UFS is known, or may be characterized by the user before the commissioning of the mechatronic circuit breaker 10. Therefore, the triggering of the step c) can be delayed by, at least, the time t1 with respect of step a).
  • the predetermined voltage ⁇ Ut is the sum of a first withstand voltage ⁇ U 100 and a second voltage ⁇ U 200 .
  • the first withstand voltage ⁇ U 100 is the withstand voltage of the at least one power semiconductor element with controlled duty ratio 1010a, 1010b and the second voltage ⁇ U 200 is the product of an electrical resistance Ri of the pre-insertion resistance Rins by a current I make .
  • the current I make is a making current of the main branch M.
  • the making current of the main branch M is the maximum current that can be circulated through the mechatronic circuit breaker, at the moment of closing said main branch M, without triggering any welding or damages of the mechanical switches MS1, MS2, ..., MSn. Said making current is likely to be lower than the maximum current that can be circulated through the mechatronic circuit breaker after closing of the main branch M. The determination of the making current is within the technical knowledge of the man skilled in the art and is not further describe in this application.
  • step c) is triggered when the current I flowing through the main branch M is below a current threshold It, advantageously It is below 90% of the making current I make , and the step b) is carried out upon completion of step c).
  • pre-arcing can occur in the mechanical switch-disconnector UFS when ⁇ Ut is above a first withstand voltage ⁇ U 100 , and dissipate more or less energy.
  • the mechanical switch-disconnector USF closes, the current starts flowing through it, and in the voltage surge arresters 103a, 103b connected in parallel to the power semiconductor components 1010a, 1010b.
  • the voltage surge arresters 103a, 103b are thus dimensioned for this energy absorption. Therefore contact welding of the mechanical switches MS1, MS2, ..., MSn or any other damage to the components of the main branch is prevented.
  • the method of closing the mechatronic circuit breaker comprises the closing of the first temporization branch T1.
  • the first temporization branch T1 and the at least one mechanical switch-disconnector UFS are closed simultaneously during step a).
  • step c) of closing the at least one power semiconductor element with controlled duty ratio 1010a, 1010b is executed before the current I THY1 flowing through the first thyristor THY1 falls below a holding current of said thyristor THY1.
  • the holding current of a thyristor is the current below which said thyristor stops by itself conducting current (it is in an open state).
  • the discharge of the at least one first capacitor C1 can be carried out by closing the switch ST1 in series with the first discharge resistance DR1.
  • the predetermined first threshold voltage ⁇ Ut is a first withstand voltage ⁇ U 100 of the at least one power semiconductor element with controlled duty ratio 1010a, 1010b.
  • the current I THY1 is repeatedly measured at least before carrying out step c).
  • the mechatronic circuit breaker 10 comprises the first switch S1. It is also understood that before starting the method for closing the mechatronic circuit breaker 10, the first switch S1 is in a non-conducting state ("open").
  • the by-pass switch S2 is in a conducting state ("closed").
  • the closing of the mechatronic circuit breaker 10 comprises the following steps:
  • the at least one power semiconductor element with controlled duty ratio 1010a, 1010b comprises IGBTs that are closed during the step a).
  • the mechatronic circuit breaker 10 comprises the pre-insertion module P1 and the switch S1. Before the closing of the mechatronic circuit breaker starts, both the by-pass switch S2 and the switch S1 are in a non-conducting state ("open").
  • the closing method of the mechatronic circuit breaker 10 comprises the following successive steps:
  • the at least one mechanical switch-disconnector UFS comprises, in series, the plurality of disconnecting modules DM1, DM2, ... DMn, each disconnecting module DM1, DM2, ... DMn comprises, the mechanical switch MS1, MS2, ..., MSn.
  • Each disconnecting module is also adapted to withstand, at its terminals, a voltage ⁇ U DM .
  • the mechatronic circuit breaker 10 comprises the pre-insertion module P1, and before starting the closing of the mechanical circuit breaker 10, the by-pass switch S2 is in a non-conductive state. If the switch S1 is considered, it is in a conducting state ("closed").
  • the method for closing the mechatronic circuit breaker 10 comprises the following successive steps:
  • each disconnecting module DM1, DM2, ... DMn can be connected in parallel with a disconnecting surge arrester DSA1, DSA2, ..., DSAn.
  • each disconnecting surge arrester DSA1, DSA2, ..., DSAn is specifically dimensioned to ensure a voltage grading across the mechanical switch-disconnector UFS.
  • the method for closing the mechatronic circuit breaker 10 can initially comprise a charging of the power transmission link C. "initially comprise” means the first step or first step sequence to be carry out.
  • healthy link we mean that the power transmission link C is healthy.
  • an auxiliary branch for example the first temporization branch T1 and/or the arming branch Arm
  • a constant monitoring of the voltage and/or the current on the power transmission link C can be carried out for detected the possible presence of a fault on the power transmission link C.
  • a fault detection may be associated with at least one of the following feature:
  • the charging sequence of the power transmission link C can involve a careful raise of the voltage in order not to create disturbances in the network.
  • the by-pass switch S2 is in a non-conducting state ("open"), and if the first switch S1 is considered, it is in a conducting state ("close).
  • the charging of the power transmission link C involves a step a1) of closing the first temporization branch T1.
  • the closing of the first temporization branch T1 comprises the switching "ON" ("closed") of the first thyristor THY1 so that the at least one first capacitor C1 charges.
  • the charging of the power transmission link C can further comprise a step a2) of fault detection on the power transmission link C while executing step a3) of waiting until the current flowing through the first temporization branch T1 reaches zero.
  • stopping the closing of the mechatronic circuit breaker 10 comprises the following steps:
  • All the steps a1) to a6) are executed via commands sent to the appropriate element of the mechatronic circuit breaker 10, and generated by a controller or an electronic card or a computer or any other electronic device, and equipped with a specific software.
  • Monitoring tools like Voltmeters and/or current measurement systems can also be employed. It is within the knowledge of the man skilled in the art to implement and configure such tools, therefore no other details will be given in the description. This statement applies to any other step that can be considered in this charging method embodiment.
  • a step a6) starts only after deionization of the first THY1 and the third THY3 thyristors. Therefore, a specific delay can be implemented in between steps a5) and a6), said specific delay being longer the deionization time of the first THY1 and the third THY3 thyristors.
  • the charging of the power transmission link C may further comprise a step a7) of discharging the at least one first capacitor C1 after the first thyristor THY1 stops conducting.
  • a step a7) starts only after deionization of the first thyristor THY1. Therefore, a specific delay can be implemented before step a7) starts, said specific delay being longer the deionization time of the first thyristor THY1.
  • “after a thyristor stops conducting” means that the current flowing is below a current level, close to zero or even zero, for which said thyristor is considered as open (in a non-conducting state).
  • the man skilled in the art is familiar with the technical features related to the thyristor which are not further detailed in the present invention.
  • any closing of the mechatronic circuit breaker 10 described in the present invention may be considered.
  • Charging the power transmission link C according to the first embodiment lead a full of said power transmission link C.
  • the voltage difference ⁇ U is close to zero at the end of said charging procedure.
  • the charging involves a step a11) of closing the arming branch Arm in parallel which comprises the switching "ON" of the third thyristor THY3 (closing of the third thyristor) so that the at least one third capacitor C3 charges.
  • the charging may further comprise a step a12) of fault detection on the power transmission link (C) executed while a step a13) waiting until the current flowing through the arming branch (Arm) reaches zero.
  • the charging also comprises a step a14) of discharging the at least one third capacitor C3 after the third thyristor THY3 stops conducting.
  • a step a14) starts only after deionization of the third thyristor THY3. Therefore, a specific delay can be implemented before step a14) starts, said specific delay being longer the deionization time of the third thyristor THY3.
  • Steps a11) to a14) are advantageously carried out successively.
  • All the steps a11) to a14) are executed via commands sent to the appropriate element of the mechatronic circuit breaker 10, and generated by a controller or an electronic card or a computer or any other electronic device, and equipped with a specific software.
  • Monitoring tools like Voltmeters and/or current measurement systems can also be employed. It is within the knowledge of the man skilled in the art to implement and configure such tools, therefore no other details will be given in the description.
  • the full charging of the power transmission link C can be achieved by repeating the charging according to this second embodiment until the voltage difference ⁇ U is close to zero.
  • the charging method according to this second embodiment is sometimes called “multistep charging method” whereas the charging method according to the first embodiment lead to the full charge of the power transmission link C in one step.
  • the first and the second charging embodiment of the power transmission link C can be combined during the closing of the mechatronic circuit breaker 10.
  • the second embodiment can be carried out in case the charging according to the first embodiment has to be stopped, after fault detection for example.
  • the first embodiment for the charging of the power transmission link C as well as the second embodiment for the charging of the power transmission link C can be executed without considering the closing of the circuit breaker.
  • the invention also concerns the charging of the power transmission link C for detecting a fault on the power transmission link C.
  • the methods described in the present invention can be implemented for the closing of an existing mechatronic circuit breaker comprising at least the main branch M without necessary involving any modification or upgrade of said mechatronic circuit breaker.
  • the way of closing the mechatronic circuit breaker 10 may be selected among the specific embodiments presented in the description to avoid or at least limit the damaging of the power transmission link C and/or the main branch.
  • the present invention shall not be limited to the specific configuration of the mechatronic circuit breaker described, and the man skill in the art can adapt the teaching of this invention to other circuit breakers.

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Keying Circuit Devices (AREA)
EP17290034.2A 2017-03-06 2017-03-06 Procédé de fermeture d'un disjoncteur mécatronique Withdrawn EP3373317A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP17290034.2A EP3373317A1 (fr) 2017-03-06 2017-03-06 Procédé de fermeture d'un disjoncteur mécatronique
PCT/EP2018/055363 WO2018162421A1 (fr) 2017-03-06 2018-03-05 Procédé de fermeture d'un disjoncteur mécatronique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP17290034.2A EP3373317A1 (fr) 2017-03-06 2017-03-06 Procédé de fermeture d'un disjoncteur mécatronique

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EP3373317A1 true EP3373317A1 (fr) 2018-09-12

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US20180301295A1 (en) * 2015-10-13 2018-10-18 General Electric Technology Gmbh Mechatronic circuit-breaker device
US20200357582A1 (en) * 2017-11-17 2020-11-12 Eaton Intelligent Power Limited Mechatronic module having a hybrid circuit arrangement
CN114121550A (zh) * 2021-10-13 2022-03-01 华为数字能源技术有限公司 电路开关、储能系统、以及相关的控制方法
US11381079B1 (en) 2021-01-27 2022-07-05 Leach International Corporation System for protecting electromechanical switchgears and protection circuits in high-voltage applications

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FR3091407B1 (fr) 2018-12-27 2021-10-29 Inst Supergrid Dispositif de coupure de courant pour courant continu haute tension avec circuit capacitif tampon et procédé de pilotage
FR3091408B1 (fr) 2018-12-27 2021-01-15 Inst Supergrid Dispositif de coupure de courant pour courant continu haute tension avec circuit d’oscillation adaptatif et procédé de pilotage
FR3094136B1 (fr) 2019-03-22 2021-04-02 Inst Supergrid Dispositif de coupure de courant pour courant continu haute tension avec résonateur et commutation
FR3113334B1 (fr) 2020-08-05 2024-07-19 Inst Supergrid Dispositif de coupure de courant pour courant électrique sous haute tension continue, installation avec un tel dispositif, procédé de pilotage, et processus d’évaluation de l’intégrité d’un conducteur électrique

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US20150002977A1 (en) 2011-12-23 2015-01-01 Alstom Technology Ltd Mechatronic Circuit Breaker Device And Associated Tripping Method And Use Thereof In Interrupting A High Direct Current
US20160300671A1 (en) * 2013-11-29 2016-10-13 Siemens Aktiengesellschaft Device and method for switching a direct current

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US20150002977A1 (en) 2011-12-23 2015-01-01 Alstom Technology Ltd Mechatronic Circuit Breaker Device And Associated Tripping Method And Use Thereof In Interrupting A High Direct Current
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US20180301295A1 (en) * 2015-10-13 2018-10-18 General Electric Technology Gmbh Mechatronic circuit-breaker device
US11049670B2 (en) * 2015-10-13 2021-06-29 General Electric Technology Gmbh Mechatronic circuit-breaker device
US20200357582A1 (en) * 2017-11-17 2020-11-12 Eaton Intelligent Power Limited Mechatronic module having a hybrid circuit arrangement
US11948768B2 (en) * 2017-11-17 2024-04-02 Eaton Intelligent Power Limited Mechatronic module having a hybrid circuit arrangement
US11381079B1 (en) 2021-01-27 2022-07-05 Leach International Corporation System for protecting electromechanical switchgears and protection circuits in high-voltage applications
CN114121550A (zh) * 2021-10-13 2022-03-01 华为数字能源技术有限公司 电路开关、储能系统、以及相关的控制方法

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