WO2019034422A1 - Limiteur de courant de court-circuit et procédé de fonctionnement d'un limiteur de courant de court-circuit - Google Patents

Limiteur de courant de court-circuit et procédé de fonctionnement d'un limiteur de courant de court-circuit Download PDF

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Publication number
WO2019034422A1
WO2019034422A1 PCT/EP2018/070825 EP2018070825W WO2019034422A1 WO 2019034422 A1 WO2019034422 A1 WO 2019034422A1 EP 2018070825 W EP2018070825 W EP 2018070825W WO 2019034422 A1 WO2019034422 A1 WO 2019034422A1
Authority
WO
WIPO (PCT)
Prior art keywords
short
circuit
drive unit
breaker
unit
Prior art date
Application number
PCT/EP2018/070825
Other languages
German (de)
English (en)
Inventor
Christian Schacherer
Philipp Last
Paul Gregor Nikolic
Original Assignee
Siemens Aktiengesellschaft
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Priority to EP18753110.8A priority Critical patent/EP3652767A1/fr
Publication of WO2019034422A1 publication Critical patent/WO2019034422A1/fr

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Classifications

    • 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
    • H01H9/10—Adaptation for built-in fuses
    • H01H9/106—Adaptation for built-in fuses fuse and switch being connected in parallel
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
    • H01H3/36—Driving mechanisms, i.e. for transmitting driving force to the contacts using belt, chain, or cord
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor
    • H01H2003/3078—Power arrangements internal to the switch for operating the driving mechanism using spring motor using an inertia element, e.g. a flywheel, to controll the energy released by the spring

Definitions

  • the invention relates to a short-circuit current limiter according to claim 1 and to a method for operating a short-circuit current limiter according to patent claim 11.
  • short circuits can occur, for example, if insulation fails. Due to the short circuit, large currents flow, which may damage or even destroy equipment in the power supply network.
  • the magnitude of the short-circuit current depends inter alia on the so-called short-circuit ⁇ power in the power grid, which is determined inter alia by the power generation plant.
  • the short-circuit currents increase with every new energy supply system, such as a photovoltaic system or a wind farm. This increase in the maximum short-circuit ⁇ amperage can lead to the design values of the resources are exceeded and thus no reliable short-circuit current interruption longer can be guaranteed.
  • the so-called I s -Limiter which represent a favorable solution in practice, have the disadvantage that after triggering this device, the fuse and the pyrotechnic controlled circuit breaker must be replaced and for a long time, so at least one day , there is an interruption of the circuit. This can not be compensated in all cases by changing the network topology, which is why it can generally lead to longer power outages.
  • the object of the invention is to provide a short circuit ⁇ current limiter and a method of operating a fault current, the, or the counter is significantly cheaper than the processes known from the prior art grills, and the network as soon as possible ready for use again at a current-limiting event, is.
  • the short circuit current limiter according to claim 1 comprises a first breaker system with a first circuit breaker and a first fuse, which are connected in parallel with each other.
  • the current limiter is characterized in that the circuit breaker on the one hand as a vacuum tube or as a gas-insulated interrupter unit is configured, said first circuit breaker is mechanically coupled to a drive unit for opening or closing a first contact unit.
  • the Stromunter ⁇ breaker is designed in the form of a vacuum tube or in the form of a gas-insulated interrupter unit. This can be in Contrary to the pyrotechnic circuit breaker devices used in the prior art are closed very quickly, without a considerable technical effort and specialized personnel are needed. Furthermore, the Schliemann can KISSING of the circuit breaker after the short circuit is completed ⁇ det be done remotely, without having to be the staff on site.
  • mechanically coupled means a mechanical operative connection between the drive unit and the circuit breaker or its contact unit, which then together form a corresponding switch. By this switch occurs when a fault current occurs disconnecting the contact unit. Furthermore, it is possible that by the drive unit in addition to the mechanical coupling to
  • Circuit breaker unit is also a current flow to Kunststoffin ⁇ unit out.
  • a current flow due to the parallel connection through the fuse. This melts instantaneously, which is why a resistance and thus a counter voltage is generated.
  • This reverse voltage in turn leads to a very fast (less than 10 ms) zero crossing of the short-circuit current immediately after disconnecting the contact unit.
  • a second breaker system is provided, which in turn has a second circuit breaker and a parallel-connected forced fuse.
  • the drive unit is designed in such a way that they can be mechanically coupled with both the first Unterbrechersys ⁇ system and with the second switch system.
  • the drive unit is mechanically coupled with both the first and the second breaker system in the short-circuit current case
  • the drive unit as be ⁇ already can be switched to the second interrup ⁇ chersystem immediately after the short circuit case and in analogy with this, the first interrupters system described be mechanically coupled.
  • the circuit is restored immediately and also by remote control possible.
  • a higher technical effort is needed by the provision of two almost identical circuit breaker systems, but it is possible, depending on the short-circuit case, the power outage to a minimum time ⁇ appropriate, even reduce gegebe less than a second.
  • the drive unit is coupled to the first breaker system in such a way that it serves to open the first contact unit of the first breaker.
  • the second circuit breaker system as described is merely intended as a redundancy to quickly restore the circuit.
  • the term operating state is the state of the current ⁇ flow to understand or to understand the current path through which the current flows in the control case. In the rare case of a short circuit, the current will go through for a transitional period r
  • the drive unit via the second interrupter system ge ⁇ leads Basically, however, the first breaker system and the second breaker system are essentially identical, so it does not matter, as a rule, which breaker system in normal operation the current flow slightest ⁇ tet.
  • the drive unit after opening the first contact unit, can be switched over via a neutral state into a coupling state with the second interrupter system.
  • the drive unit is configured in such a way that it can be used on the one hand for the actuation of the first circuit breaker and for ⁇ Actuate the supply of the second current breaker.
  • a neutral state is preferably provided, in which the drive ⁇ unit is coupled to neither the first nor the second circuit breaker and in which the current path to both breaker systems is interrupted. This neutral state can be of importance in particular for maintenance work as a safety aspect.
  • each coupled Un ⁇ terbrechersystem it is expedient if a current path passing through the at ⁇ drive unit and through which each coupled Un ⁇ terbrechersystem. It is also expedient that extends in an open state of each coupled contact unit of the current path through the drive unit and through the fuse. This ensures that it also leads to a melting of the fuse and the resulting counter-voltage.
  • the drive unit has a comparatively high opening speed of at least 3 m / s, preferably of at least 4 m / s. This causes an opening via a stroke between the two contact elements of the contact unit of 10 mm in a time of 5 ms, preferably 4 ms or 3 ms.
  • a fast ⁇ réellesge ⁇ speed ensures a shutdown of the Kreiss by the short circuit current in a time in which can be prevented that further damage to Radiomit ⁇ done stuffs.
  • a concept for a drive unit capable of realizing opening speeds in the aforementioned range is based on an arrangement for biasing rope rotation pendulum kinematics.
  • a further component of the invention is a method for operating a short-circuit current limiter having the features of patent claim 11.
  • the method according to the invention as claimed in claim 11 includes a breaker system and a drive unit of a short-circuit current limiter.
  • the breaker system in this case has a circuit breaker, which is designed in the form of a vacuum tube or in the form of a gas-insulated interrupter unit. Further, the interrupter unit to a to the circuit breaker ⁇ parallel fuse. In this case, the drive unit is connected to a first contact unit of the first
  • Circuit breaker mechanically coupled in conjunction, wherein a fault current is measured by means of a current measuring unit.
  • a signal is sent to the at ⁇ drive unit, whereupon the drive unit is operated, and thus the first contact unit is opened. Since ⁇ raufhin is due to the parallel connection of circuit breaker and fuse current conduction through the fuse, which is triggered. Triggered under the term is understood that is interrupted by the fuse the current path. Usually this is done by a
  • the method described has substantially the same advantages and effects which are already described in the Vorrich ⁇ tung demanding. Particularly advantageously affects the process if, after a tripping of the fuse, the drive unit via a neutral position a second interruption chersystem with the same effect as the first sub ⁇ breaker system is coupled. This ensures that after a short-circuit current case in the shortest possible time the network operation can be resumed. Further embodiments of the invention and further features will be explained in more detail with reference to the following figures. It merely is schematic and specific examplary ⁇ representations, which are not limiting the scope.
  • Figure 1 shows a short-circuit limiter in the operating state
  • Figure 2 shows the short-circuit current limiter of Figure 1, an open circuit breaker and a current path through a fuse
  • FIG. 3 shows the short-circuit current limiter according to FIGS. 1 and 2 in a neutral state
  • FIG. 4 shows the short-circuit current limiter of the preceding one
  • FIG. 5 is a schematic representation of a drive unit based on a rope rotation pendulum kinematics in different positions.
  • FIG. 1 shows a schematic representation of a short- circuit current limiter.
  • This Kurzröstrombe ⁇ limiter 2 has a central drive unit 10, which is in Figure 1 in an operating state which is marked in ⁇ labeled B. In this operating state B, the drive ⁇ unit 10 is coupled to an interrupter unit 4, wherein a direct mechanical operative connection with a first contact unit 12 of a first circuit breaker 6 is. Further, to the first circuit breaker 6 in the first
  • Breaker system 4 a first fuse 8 connected in parallel. Further, a current measuring unit 24 is provided which leads via a signal line 26 to the drive unit 10, wherein upon occurrence or detection of a fault current through the current measuring unit 24, a triggering of the drive unit 10 he follows ⁇ .
  • the current path is carried out in Figure 1 by the drive ⁇ unit 10 in the first interrupter unit 4, wherein the current in this case divides the largest current density lies above the contact unit 12. A partial flow is guided by the first backup. 8 After the first interrupter unit 4, only one power line is again provided.
  • the short-circuit current limiter 2 comprises a second interrupter unit 5, which will be discussed in more detail below.
  • first fuse 8 melts in a very short time, preferably in less than 3 ms and thereby builds a counter-voltage or a resistor through which a zero crossing of the alternating current flowing through the current path is generated. This induced by the fuse 8 zero crossing causes a rapid erasure of an arc that occurs between the contacts of the contact unit 12.
  • a power interruption occurs in less than 10 ms after detection of the short-circuit current ⁇ .
  • a power interruption in less than 5 ms, preferably less than 4 ms is possible. Such a rapid power interruption is sufficient to ensure protection of the essential resources in a power grid.
  • the drive unit 10 is in Figure 2 in a Neutralzu ⁇ stand ⁇ ⁇ .
  • This neutral state ⁇ ⁇ means that although the contact unit is in a mechanical coupling with the first circuit breaker 6 and 12, however, the first Kon ⁇ clock unit is in an opened state 12th
  • the drive unit 10 also knows another Neut ⁇ ralschreib, which is denoted by N and is ver in Figure 3 ⁇ anschaulicht.
  • N is neither a mechanical coupling with the first interrupter unit 4 nor the second interrupter unit 5.
  • This neutral ⁇ state is preferred technically also designed so that a technician who must serve the short circuit current on site, can immediately see that the drive unit 10 in the neutral state N stands. This is advantageous for safety reasons, since it can be estimated immediately whether a current flow is basically possible, or whether this type of construction is not possible. As soon as the short circuit is no longer present, whichever
  • the short-circuit current limiter 2 is again in its basic state, which is why the operating state ⁇ ⁇ and the operating state B are basically identical. They differ only in that the drive unit 10 is alternately coupled to the first breaker system 4 and the second breaker system 5. Switching back to the operating state B from the operating state ⁇ ⁇ would in principle be possible without significant power interruption, ie in less than 200 ms.
  • FIG. 5 explained.
  • This is an arrangement 14 for biasing or operating a rope rotation pendulum kinematics.
  • the arrangement 14 has a rotational body 16 which is connected to winding cables 18, which in turn are fastened to a winding body 22.
  • the winding cables 18 and 18 ⁇ By rotating the rotating body 16 along the Doppelpfei ⁇ les 17, the winding cables 18 and 18 ⁇ either wound on the bobbin 22 or unwound.
  • the winding body 22 is configured in the form of a rod, at the end, shown here in simplified form, there is a switching contact 28, the part of the first contact unit
  • the switching contact 28 thus represents a contact of the contact unit 12.
  • FIG. 1 In the rightmost image of Figure 5, which is labeled B, the operating state B is schematically illustrated in Figure 1. This is a closed first contact unit 12.
  • the second contact unit 13 is ge ⁇ opens.
  • the current path is, as already mentioned, through the winding body 22 and via the contact 28 and thus via the first contact unit 12. It can be seen that the winding body 22 is continued in the mirrored with respect to the rotational body 16 direction, via a coupling with the second drive unit
  • Short circuit current during the operating state isIchtre ⁇ th and the contacts of the contact unit 12 separately wur ⁇ the.
  • this representation has described the neutral state ⁇ ⁇ .
  • the winding members 18 and 18 are substantially in a ⁇ in Equilibrium ⁇ -equilibrium state, but which can be adjusted by various mechanical Pa ⁇ parameters and varied.
  • the Neutralzu ⁇ stand ⁇ ⁇ differs from the neutral state N in particular in that at ⁇ ⁇ a coupling with the second interruption system 5 and with the second circuit breaker 7 is suppressed.
  • the neutral state N which is provided in particular for the maintenance case, is essentially indistinguishable from the state ⁇ ⁇ , but it is ensured that neither of the two contact units 12 and 13 can be closed in this state, so that certainly the circuit is interrupted and a
  • an operating state ⁇ ⁇ is now shown, which is equivalent to the operating state B, where ⁇ at but a coupling with the second breaker system 5, in this case with the second circuit breaker 7, in particular the second contact unit 13. Coupling to the first contact unit 12 is prevented in this position by a suitable device, not shown. If the drive unit 10, which is simplified here merely represented by the arrangement 14, receives a signal that there is a short-circuit current case, analogously thereto, a separation of the second contact unit 13 can take place within 3 to 5 ms.
  • the arrangement 14 is in the neutral state N or ⁇ ⁇ without the action of external forces or energies.
  • a bias In order to reach the position B or ⁇ ⁇ , a bias must be introduced, which is preferably by a Federspei ⁇ cher or by a gas spring, both of which are not shown here, applied.
  • a spring ⁇ memory or a gas spring details in the arrangement of the winding cables 18 and 18 ⁇ change, these are shown here only schematically.
  • the basic principle that a rotating body winding ropes is in kinematical connection with a translationally moving winding body, is quite generally, depending on the design of the energy storage, well suited to perform very fast drive movements.

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  • Gas-Insulated Switchgears (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)

Abstract

L'invention concerne un limiteur de courant de court-circuit comprenant un premier système disjoncteur (4) qui comporte un premier disjoncteur (6) et un premier fusible (8) montés en parallèle. L'invention est caractérisé en ce que le disjoncteur (6, 7) est un tube à vide ou une unité de coupure à isolation gazeuse. Le premier disjoncteur (6) est accouplé mécaniquement à une unité d'entraînement (10) pour ouvrir ou fermer une première unité de contact (12).
PCT/EP2018/070825 2017-08-16 2018-08-01 Limiteur de courant de court-circuit et procédé de fonctionnement d'un limiteur de courant de court-circuit WO2019034422A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP18753110.8A EP3652767A1 (fr) 2017-08-16 2018-08-01 Limiteur de courant de court-circuit et procédé de fonctionnement d'un limiteur de courant de court-circuit

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017214238.3A DE102017214238A1 (de) 2017-08-16 2017-08-16 Kurzschlussstrombegrenzer und Verfahren zum Betreiben eines Kurzschlussstrombegrenzers
DE102017214238.3 2017-08-16

Publications (1)

Publication Number Publication Date
WO2019034422A1 true WO2019034422A1 (fr) 2019-02-21

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PCT/EP2018/070825 WO2019034422A1 (fr) 2017-08-16 2018-08-01 Limiteur de courant de court-circuit et procédé de fonctionnement d'un limiteur de courant de court-circuit

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Country Link
EP (1) EP3652767A1 (fr)
DE (1) DE102017214238A1 (fr)
WO (1) WO2019034422A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114252764A (zh) * 2021-11-30 2022-03-29 南方电网科学研究院有限责任公司 一种断路器断流能力的校验方法、装置、设备及介质

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020208426B4 (de) 2020-07-06 2023-10-12 Siemens Aktiengesellschaft Kurzschlussstrombegrenzer

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DE1191884B (de) * 1962-07-26 1965-04-29 Licentia Gmbh Gleichstromschalter fuer hohe Spannungen
US3957329A (en) * 1974-11-01 1976-05-18 I-T-E Imperial Corporation Fault-current limiter for high power electrical transmission systems
US4263635A (en) * 1977-07-20 1981-04-21 Steven Welk Method and apparatus for sensing the clearance of fault current on an ac transmission line
US4516182A (en) * 1981-01-16 1985-05-07 Ga Technologies Inc. Current limiting apparatus
DE102015200135A1 (de) * 2015-01-08 2016-07-14 Siemens Aktiengesellschaft Kopplungsglied für ein elektrisches Schaltgerät,insbesondere eine Vakuumschaltröhre

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DE1415250A1 (de) * 1958-12-22 1968-10-10 Licentia Gmbh Elektrisches Schaltgeraet
DE3006336C2 (de) * 1980-02-20 1985-08-01 Calor-Emag Elektrizitäts-Aktiengesellschaft, 4030 Ratingen Schaltgerät
AT397003B (de) * 1992-01-16 1994-01-25 Holly Rudolf Einrichtung zum abschalten eines hochspannungsstromkreises
DE10030187A1 (de) * 2000-06-20 2002-01-03 Siemens Ag Verfahren zum Öffnen der Schaltstrecke einer Vakuumschaltröhre
CN101383238B (zh) * 2008-04-29 2011-01-12 黄勤飞 一种智能双电源转换装置
CN203039359U (zh) * 2012-12-06 2013-07-03 山西省电力公司电力科学研究院 一种变压器低压侧高速短路限流器的启动装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1191884B (de) * 1962-07-26 1965-04-29 Licentia Gmbh Gleichstromschalter fuer hohe Spannungen
US3957329A (en) * 1974-11-01 1976-05-18 I-T-E Imperial Corporation Fault-current limiter for high power electrical transmission systems
US4263635A (en) * 1977-07-20 1981-04-21 Steven Welk Method and apparatus for sensing the clearance of fault current on an ac transmission line
US4516182A (en) * 1981-01-16 1985-05-07 Ga Technologies Inc. Current limiting apparatus
DE102015200135A1 (de) * 2015-01-08 2016-07-14 Siemens Aktiengesellschaft Kopplungsglied für ein elektrisches Schaltgerät,insbesondere eine Vakuumschaltröhre

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114252764A (zh) * 2021-11-30 2022-03-29 南方电网科学研究院有限责任公司 一种断路器断流能力的校验方法、装置、设备及介质

Also Published As

Publication number Publication date
DE102017214238A1 (de) 2019-02-21
EP3652767A1 (fr) 2020-05-20

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