EP3928405A1 - Procédé pour coordonner des dispositifs de protection dans un réseau de distribution - Google Patents

Procédé pour coordonner des dispositifs de protection dans un réseau de distribution

Info

Publication number
EP3928405A1
EP3928405A1 EP19778835.9A EP19778835A EP3928405A1 EP 3928405 A1 EP3928405 A1 EP 3928405A1 EP 19778835 A EP19778835 A EP 19778835A EP 3928405 A1 EP3928405 A1 EP 3928405A1
Authority
EP
European Patent Office
Prior art keywords
switch
consumer
counter
charging
error
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.)
Pending
Application number
EP19778835.9A
Other languages
German (de)
English (en)
Inventor
Yi Zhu
Shivansh BATRA
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
Original Assignee
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from PCT/CN2019/080554 external-priority patent/WO2020198986A1/fr
Priority claimed from PCT/CN2019/080553 external-priority patent/WO2020198985A1/fr
Priority claimed from PCT/CN2019/080558 external-priority patent/WO2020198987A1/fr
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP3928405A1 publication Critical patent/EP3928405A1/fr
Pending legal-status Critical Current

Links

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
    • H01H33/02—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
    • H01H33/596—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 for interrupting dc
    • 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
    • H01H9/541—Contacts shunted by semiconductor devices
    • H01H9/542—Contacts shunted by static switch means
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H1/00—Details of emergency protective circuit arrangements
    • H02H1/0007—Details of emergency protective circuit arrangements concerning the detecting means
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
    • H02H3/087—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current for dc applications
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
    • H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers
    • H02H7/125—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for rectifiers
    • H02H7/1252—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for rectifiers responsive to overvoltage in input or output, e.g. by load dump
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
    • H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers
    • H02H7/125—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for rectifiers
    • H02H7/1257—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for rectifiers responsive to short circuit or wrong polarity in output circuit
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
    • H02H7/268—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured for dc systems
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
    • H02H9/001—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection limiting speed of change of electric quantities, e.g. soft switching on or off
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J1/00—Circuit arrangements for dc mains or dc distribution networks
    • H02J1/10—Parallel operation of dc sources
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J1/00—Circuit arrangements for dc mains or dc distribution networks
    • H02J1/10—Parallel operation of dc sources
    • H02J1/12—Parallel operation of dc generators with converters, e.g. with mercury-arc rectifier
    • 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
    • H01H9/541—Contacts shunted by semiconductor devices
    • H01H9/542—Contacts shunted by static switch means
    • H01H2009/544—Contacts shunted by static switch means the static switching means being an insulated gate bipolar transistor, e.g. IGBT, Darlington configuration of FET and bipolar transistor

Definitions

  • the invention relates to a method for coordinating protective devices in a distribution network.
  • DC distribution systems are seen as promising in terms of saving energy and using it efficiently. Especially with sources or feeds from renewable energy, it can be easier to integrate them into a
  • Integrate a direct current distribution system as an alternating current system for example, in a photovoltaic system, the DC-AC-DC converter can be replaced with a simple DC-DC converter.
  • capacitor banks as energy storage devices can be connected directly to such a system without additional converters.
  • the feeds 1010; 1011 AC power source via Active Front Ends (AFE) 1020; 1021 can be fed into the system.
  • AFE Active Front Ends
  • Freewheeling diodes can not be sufficiently protected by the self-protection of the transducers and fuses on the AC side, as severe damage may or speak by electric current due to a possible voltage reversal at LRC oscillations in the fault path V. This is particularly noticeable when the Active Front End (AFE) is not connected to the power rail in a short-circuit-proof manner.
  • AFE Active Front End
  • the diodes can act as uncontrolled rectifiers. The fault current is supplied from the alternating current side and may not be able to be switched off quickly enough by the fuses and thus destroy the diodes.
  • the main problems of a DC distribution system are the possible destruction of free-wheeling diodes due to voltage reversal, capacitive discharge and the selectivity to the active front ends (AFE).
  • SSCBs Solid State Circuit Breakers, semiconductor switches
  • SSCBs Solid State Circuit Breakers, semiconductor switches
  • They can be used to switch off fault regions within 10 ps (microseconds).
  • the problem with the pure use of holder switches is that they have a significantly higher power loss and are also more cost-intensive than conventional switches. Due to the low currents of the self-protection functions of the semiconductor components of the (power) converters and their extremely fast reaction, it is very challenging to achieve selectivity for the semiconductor switches.
  • the electrical switch opens the DC circuit by means of the tripping unit and the precharge device restores the voltage on the busbar before the electrical switch is closed, and the device has a control unit for automatic closing etting the electrical switch after successful precharge includes the following steps:
  • the distribution network is recharged within a few 10 ms (t C charge2, milliseconds), the device is switched on automatically, the switching transient is suppressed (ttran) and jumping to detect whether there is an error, or
  • the advantage here is that a reduced number of semiconductor switches can be used in the network, so that costs are minimized and also power losses, since these are only used for feeds, energy storage and large motor loads with power feedback.
  • the fault current can be interrupted very quickly by means of the circuit breaker within 10 ps (microseconds), and the fault can then be isolated at a relatively slow rate.
  • the selectivity between the different protective devices can either be time-controlled or via communication. Possible failures of the distribution network or the entire electrical network can be kept as short as possible by using an early assessment of the status of the electrical charge in the network.
  • the method comprises the further steps of an electromechanical switch:
  • the electrical switch in the at least one device is a semiconductor switch.
  • the at least one device further comprises a unit for communication.
  • the at least one device further comprises a control unit for suppressing a switch-on transient.
  • This control unit a switch-on transient, can suppress the high current at the switch-on transient in order to avoid incorrect error detection.
  • the pre-charging device restores the voltage on the busbar after a first waiting time.
  • the pre-charger restores voltage to the bus bar upon receiving a command.
  • the pre-charging device can receive the command via the communication unit.
  • control unit automatically closes the electrical switch for automatic closing after a second waiting time.
  • control unit closes automatically
  • Figure 1 electrical network with feeds, consumers and distribution network
  • Figure 2 electrical network with feeds, consumers and distribution network with protective devices in levels
  • FIG. 3 another electrical network with feeds
  • Figures 4A and 4B inventive method for coordinating the distribution network for the automatically electrically closable devices of a direct current circuit
  • FIGS. 5A and 5B inventive method for coordinating the distribution network for the electromechanical switches
  • FIG. 6 Another electrical network with feeds
  • Figure 7 another electrical network with feeds
  • Figure 8 another electrical network with feeds
  • FIG. 9 Another electrical network with feeds
  • Figure 10 automatically closable device of a direct current circuit.
  • an exemplary direct current network is Darge presents with the current flows under nominal conditions.
  • a feed 1010; 1011; 1012; 1013 are over a distribution network 2000 with a busbar 200 with loads 1050; 1051; 1052; 1053; 1054 connected.
  • Feeds 1010; 1011 can be, for example, AC power sources that have an Active Front End (AFE) 1020; 1021 are connected to the distribution network 2000.
  • a feed 1012 can be a photovoltaic system, for example, feed 1013 a different type with power converters. With these feeds 1012; 1013, only a unidirectional current flow in the direction of the distribution network 2000 is possible.
  • consumer 1050 can be an ohmic load that only allows a unidirectional current flow in its direction.
  • motors without power feedback for example consumer 1052.
  • the consumer 1051; 1053; 1054 can be, for example, motors with power feedback, a capacitor bank as an energy store or a battery, with these consumers allowing a bidirectional flow of current to and from the distribution network.
  • FIG. 2 shows the electrical network 1000 with feeds 1010; 1011; 1012; 1013, consumers 1050; 1051; 1052; 1053; 1054; 1055 and a distribution network in between
  • the feeds 1010; 1011; 1012; 1013 can each with means of one of the devices 2010; 2011; 2012; 2013 for opening or closing a DC circuit individually
  • the device 2010; 2011; 2012; 2013 for opening or closing a DC circuit are each arranged between the feed and the busbar 200.
  • the distribution network 2000 arranged in between also comprises conventional electromechanical switches 2020 for isolating faults; 2021; 2022; 2023; 2024; 2025; 2026; 2027; 2028; 2029; 2030.
  • the devices for opening or closing a direct current circuit can be arranged, for example, on power converters with high capacity, capacitor banks as energy storage, photovoltaic systems, batteries or on consumers with feedback depending on the size of the direct current intermediate circuit (DC link).
  • DC link direct current intermediate circuit
  • FIG. 3 shows a further electrical network 1000 with feeds 1010; 1011; 1012; 1013, consumers 1050;
  • the distribution network 2000 differs from the electrical network 1000 from FIG. 2 as follows: Several consumers 1050; 1051; 1052 of the electrical network 2000 form a group. Each of these consumers 1050; 1051; 1052 is connected to an electromechanical switch 2028; 2029; 2030 can be separated from the distribution network 2000 in the event of a fault. Consumer 1050 is assigned to electromechanical switch 2028, consumer 1051 to electromechanical switch 2029 and consumer 1052 to electromechanical switch 2030.
  • the electromechanical switches 2028; 2029; 2030 are electrically connected to a busbar 200 ′, which in turn is electrically connected to the busbar 200 of the distribution network 2000 with an electromechanical switch 2024.
  • the inventive method for coordinating a distribution network 2000 different levels of electromechanical switches 2020; 2021; 2022; 2023; 2024; 2025; 2026; 2027; 2028; 2029; 2030 and automatically electrically lockable devices 2010; 2011; 2012; 2013; 2014; 2015; 2016 shown in a DC circuit.
  • the distribution network 2000 is between feeders 1010; 1011; 1012; 1013 and consumers 1050; 1051; 1052; 1053; 1054; 1055 arranged with at least one busbar 200; 200 ', the devices 2010; 2011; 2012; 2013; 2014; 2015; 2016 each include
  • the electrical switch 110 opens the DC circuit by means of the trip unit 130 and the pre-charging device 140 restores the voltage on the busbar 200 before the electrical switch 110 closes, and the device 2010; 2011; 2012; 2013; 2014; 2015; 2016 comprises a control unit 150 for automatically closing the electrical switch 110 after successful pre-charging.
  • the method according to the invention comprises according to FIG. 4A (device on the consumer side) and 4B (device on the feed side) the steps:
  • check 450 whether the line voltage on the busbar 200; 200 'is restored and if so, automatic closing 412 of the device 2010; 2011; 2012; 2013; 2014; 2015; 2016; and then
  • Loading device 140 is possible; and either:
  • the method according to the invention comprises an electromechanical switch 2020; 2021; 2022; 2023; 2024; 2025; 2026; 2027; 2028; 2029; The next steps in 2030:
  • 1052; 1053; 1054; 1055 is not less than or equal to zero, waiting 507 the switch-off time tEM C B of the electromechanical switch 2020; 2021; 2022; 2023; 2024; 2025; 2026; 2027; 2028; 2029; 2030 and the charging time t charge of the pre-charging device 140; and then
  • the method according to the invention is explained in more detail for an error 1500 in FIG. 6, for an error 1501 in FIG. 7, an error 1502 in FIG. 8 and an error 1503 in FIG.
  • FIG. 6 shows a possible error 1500 between the automatically electrically lockable device 2010 in one
  • the error 1500 thus occurs between the feed 1010 and the busbar 200.
  • All automatically electrically lockable devices 2010; 2011; 2012; 2013; 2014; 2015; 2016 in a DC circuit at the feeds 1010; 1011; 1012; 1013 and consumers in 2014; 2015; 2016 open instantaneously.
  • the electromechanical switch 2020 experiences a negative fault current Ifauit and therefore also opens.
  • the fault is isolated within tEM C B, the switching time of the electromechanical switches.
  • the other electromechanical switches on the feeders experience a positive fault current Ifauit and therefore do not open, just like the electromechanical switches
  • the automatically electrically lockable device 2010 in a direct current circuit tries to restore the voltage on the consumer side, but this is not possible due to the error 1500, so that the automatically electrically lockable device 2010 remains open in a direct current circuit.
  • the other automatically electrically lockable devices 2011; 2012; 2013 in a DC circuit at the feeds can restore the voltage, since there is no fault here.
  • the electrical network 1000 has been restored111 within the time span tEM C B + t charge + t charge 2 + t tran111 and is operational again within this time.
  • the consumer-side electromechanical switches experience a negative fault current Ifauit and therefore do not open.
  • the feed-side electromechanical switches 2020; 2021; 2022; 2023 close within the time 3 x tEM C B + 2 X t charge and isolate the fault 1501.
  • the electrical network 1000 remains out of operation because of the fault in the busbar.
  • FIG. 8 another possible fault 1502 has occurred between the electromechanical switch 2024 and the busbar 200 '.
  • the error 1502 thus occurs between the busbar 200 and the busbar 200 '.
  • All other electromechanical switch consumers experience a negative fault current Ifauit and therefore do not open.
  • the automatically electrically closable devices try to restore the voltage on the busbar 200 in a direct current circuit, which is not possible because the fault has not yet been isolated.
  • the electromechanical switch 2024 opens after a total of 2 x tEM C B + t charge and the fault is isolated. All feed-side, automatically electrically closable devices in a DC circuit can now restore the voltage on the busbar 200 and the rest of the electrical network is restored within the time span 2 x (tEMCB + tcharge) + t C harge2 + ttran and operational again within this time.
  • the consumer-side automatically electrically lockable device 2014 in a direct current circuit cannot be switched on again due to error 1502, but remains disconnected.
  • a further possible error 1503 has occurred between the automatically electrically lockable device 2014 in a direct current circuit and the electromechanical switch 2030.
  • the error 1503 thus occurs between the consumer 1052 and the busbar 200 '.
  • fault 1503 is isolated within time period tEMCB.
  • All automatically electrically lockable devices 2010; 2011; 2012; 2013; 2015; In 2016 in a DC circuit try to restore the voltage on the busbar, so that the rest of the electrical network is restored within the time span tEMCB + tc ha rge + t Cha rge 2 + ttran and is operational again within this time.
  • the consumer-side automatically electrically lockable device 2014 in a direct current circuit cannot be switched on again due to error 1503, but remains disconnected.
  • the communication time t C omm can be in the range of ms (milliseconds).
  • the time until the error is isolated in the case of error 1502 ( Figure 8) can be reduced to tEMCB + t comm and the restart time to the period tEMCB + tcomm + tcharge + tcharge2 + ttran
  • the device 2010; 2011; 2012; 2013; 2014; 2015; 2016 shown for opening or closing a DC circuit with at least one busbar 200.
  • the device 2010; 2011; 2012; 2013; 2014; 2015; 2016 includes an electrical switch 110 for opening or closing the direct current circuit, a fault current detection 120, a trip unit 130 and a pre-charging device 140, whereby when a fault current is detected by the fault current detection 120, the electric switch 110 uses the tripping unit 130 to control the direct current circuit opens and wherein the precharge device 140 before the closing of the electrical switch 110 restores the voltage on the busbar 200.
  • a control unit 150 is provided which can automatically close the electrical switch 110 after the pre-charge.
  • 2012; 2013; 2014; 2015; 2016 can be a solid-state switch or a semiconductor switch, for example.
  • it can be a semiconductor switch based on silicon (Si), silicon carbide (SiC) or gallium nitride (GaN).
  • the device 2010; 2011; 2012; 2013; 2014; 2015; 2016 further comprise a unit 180 for communication.
  • This unit 180 for communication can receive commands from a higher-level control unit and / or arranged in a distribution network 2000 Devices 2010; 2011; 2012; 2013; 2014; 2015; Coordinate 2016.
  • control unit 160 for suppressing a switch-on transient.
  • the control unit 160 can suppress the high inrush current in the event of a switch-on transient in order to avoid triggering an error.
  • the device 2010; 2011; 2012; 2013; 2014; 2015; 2016 can furthermore comprise a measuring unit 170 for measuring current and / or voltage values.
  • the pre-charger 140 can restore the voltage on the busbar 200 after a first waiting period. Alternatively, the pre-charger 140 restores voltage to the busbar 200 upon receiving a command. The command can be given to the precharge device 140 via the unit 180 for communication.
  • the electrical switch 110 can close this automatically after a second waiting time.
  • the control unit 150 for automatically closing the electrical switch 110 can close the latter after a voltage has been restored on the busbar 200 above a threshold value.
  • the control unit 150 can receive the voltage values on the busbar 200 from the measuring unit 170 for automatically closing an electrical switch 110.
  • the different components of the device 100 according to the invention are supplied with electrical energy via the power supply 190.
  • the power supply 190 can be formed externally or internally.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)
  • Direct Current Feeding And Distribution (AREA)
  • Supply And Distribution Of Alternating Current (AREA)

Abstract

L'invention concerne un procédé pour coordonner un réseau de distribution de différents plans provenant de commutateurs électromécaniques et des dispositifs pouvant être fermés électriquement dans un circuit à courant continu, le réseau de distribution étant disposé entre des alimentations et des consommateurs, et pourvu d'au moins une barre omnibus.
EP19778835.9A 2019-03-29 2019-09-13 Procédé pour coordonner des dispositifs de protection dans un réseau de distribution Pending EP3928405A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
PCT/CN2019/080554 WO2020198986A1 (fr) 2019-03-29 2019-03-29 Disjoncteur à semi-conducteurs, procédé de fonctionnement correspondant et appareil de commande de disjoncteur à semi-conducteurs
PCT/CN2019/080553 WO2020198985A1 (fr) 2019-03-29 2019-03-29 Disjoncteur hybride, système de coupe-circuit hybride et procédé de coupe-circuit
PCT/CN2019/080558 WO2020198987A1 (fr) 2019-03-29 2019-03-29 Procédé et appareil de commande de disjoncteur à semi-conducteurs, et disjoncteur à semi-conducteurs
PCT/EP2019/074541 WO2020200493A1 (fr) 2019-03-29 2019-09-13 Procédé pour coordonner des dispositifs de protection dans un réseau de distribution

Publications (1)

Publication Number Publication Date
EP3928405A1 true EP3928405A1 (fr) 2021-12-29

Family

ID=68072316

Family Applications (5)

Application Number Title Priority Date Filing Date
EP19778836.7A Pending EP3925046A1 (fr) 2019-03-29 2019-09-13 Réseau électrique
EP19778834.2A Pending EP3925045A1 (fr) 2019-03-29 2019-09-13 Dispositif d'ouverture ou de fermeture d'un circuit à courant continu et procédé de fermeture automatique d'un circuit à courant continu
EP19778838.3A Pending EP3925048A1 (fr) 2019-03-29 2019-09-13 Réseau électrique
EP19778837.5A Pending EP3925047A1 (fr) 2019-03-29 2019-09-13 Réseau électrique et procédé d'exploitation d'un réseau électrique
EP19778835.9A Pending EP3928405A1 (fr) 2019-03-29 2019-09-13 Procédé pour coordonner des dispositifs de protection dans un réseau de distribution

Family Applications Before (4)

Application Number Title Priority Date Filing Date
EP19778836.7A Pending EP3925046A1 (fr) 2019-03-29 2019-09-13 Réseau électrique
EP19778834.2A Pending EP3925045A1 (fr) 2019-03-29 2019-09-13 Dispositif d'ouverture ou de fermeture d'un circuit à courant continu et procédé de fermeture automatique d'un circuit à courant continu
EP19778838.3A Pending EP3925048A1 (fr) 2019-03-29 2019-09-13 Réseau électrique
EP19778837.5A Pending EP3925047A1 (fr) 2019-03-29 2019-09-13 Réseau électrique et procédé d'exploitation d'un réseau électrique

Country Status (4)

Country Link
US (5) US20220172914A1 (fr)
EP (5) EP3925046A1 (fr)
CN (4) CN114175436A (fr)
WO (5) WO2020200492A1 (fr)

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US20220200274A1 (en) 2022-06-23
EP3925047A1 (fr) 2021-12-22
US20220020544A1 (en) 2022-01-20
CN114207976A (zh) 2022-03-18
WO2020200494A1 (fr) 2020-10-08
WO2020200495A1 (fr) 2020-10-08
CN114128072A (zh) 2022-03-01
WO2020200493A1 (fr) 2020-10-08
EP3925046A1 (fr) 2021-12-22
CN114207975A (zh) 2022-03-18
CN113892219A (zh) 2022-01-04
CN114175436A (zh) 2022-03-11
US20220166214A1 (en) 2022-05-26
WO2020200492A1 (fr) 2020-10-08
WO2020200496A1 (fr) 2020-10-08
US20220172914A1 (en) 2022-06-02
EP3925045A1 (fr) 2021-12-22
EP3925048A1 (fr) 2021-12-22

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