WO2012100831A1 - Disjoncteur - Google Patents

Disjoncteur Download PDF

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Publication number
WO2012100831A1
WO2012100831A1 PCT/EP2011/051161 EP2011051161W WO2012100831A1 WO 2012100831 A1 WO2012100831 A1 WO 2012100831A1 EP 2011051161 W EP2011051161 W EP 2011051161W WO 2012100831 A1 WO2012100831 A1 WO 2012100831A1
Authority
WO
WIPO (PCT)
Prior art keywords
circuit
circuit breaker
circuit branch
voltage
branch
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP2011/051161
Other languages
English (en)
Inventor
Colin Donald Murray Oates
Eswar Kumar Chukaluri
William R. CROOKES
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.)
GE Vernova GmbH
Original Assignee
Alstom Technology 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
Application filed by Alstom Technology AG filed Critical Alstom Technology AG
Priority to PCT/EP2011/051161 priority Critical patent/WO2012100831A1/fr
Publication of WO2012100831A1 publication Critical patent/WO2012100831A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • H01H9/54—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
    • 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
    • H01H2009/543—Contacts shunted by static switch means third parallel branch comprising an energy absorber, e.g. MOV, PTC, Zener
    • 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

Definitions

  • This invention relates to a circuit breaker apparatus for use in high voltage direct current (HVDC) power transmission and reactive power compensation.
  • HVDC high voltage direct current
  • alternating current (AC) power is typically converted to direct current (DC) power for transmission via overhead lines and/or undersea cables.
  • DC direct current
  • This conversion removes the need to compensate for the AC capacitive load effects imposed by the transmission line or cable, and thereby reduces the cost per kilometre of the lines and/or cables. Conversion from AC to DC thus becomes cost- effective when power needs to be transmitted over a long distance.
  • the conversion of AC to DC power is also utilized in power transmission networks where it is necessary to interconnect AC networks operating at different frequencies.
  • a voltage source converter typically includes one or more circuit breakers, which are employed to switch specific components of the voltage source converter out of circuit in response to various circumstances.
  • voltage source converters may be vulnerable to DC side faults that present a short circuit with low impedance across the DC power transmission lines or cables. Such faults can occur due to damage or breakdown of insulation, movement of conductors or other accidental bridging between conductors by a foreign object.
  • a circuit breaker may be used on the DC side of the voltage source converter to isolate the fault to allow the fault in the DC network to be repaired,
  • Circuit breakers may also be used in voltage source converters to minimise the detrimental effects associated with the generation of "earth- currents" .
  • AC power is converted to DC power using a rectifier station and transmitted over long distance DC power transmission cables before being converted back to AC power using an inverter station.
  • rectifier and inverter stations typically rely on the use of monopole or bi-pole voltage source converters to carry out the necessary power conversion.
  • a mono-pole voltage source converter includes DC terminals, which are respectively connected to a DC voltage and earth ground.
  • DC terminals which are respectively connected to a DC voltage and earth ground.
  • current flows between the earthed terminals of the two mono-pole converters. This "earth-current" can lead to electrochemical corrosion in buried metal infrastructure such as pipelines or affect the water chemistry in the vicinity of undersea earth electrodes.
  • a bi-pole voltage source converter includes DC terminals, which are respectively connected to DC voltages having different polarities. During normal operation, negligible "earth-current" flows between the earthed terminals of the rectifier and inverter stations. However, the development of a fault relating to either pole necessitates monopolar operation of the bi-pole voltage source converter, which in turn leads to an increase in "earth-current".
  • the flow of "earth-current" can be minimised by diverting the current to a metallic return interconnecting the earthed terminals of the rectifier and inverter stations.
  • the diversion of this current is performed using a metallic return transfer breaker, which incorporates a conventional mechanical circuit breaker, to commutate the flow of "earth-current" from the respective earthed terminal to the metallic return.
  • US 4,216,513 A discloses the use of an SF 6 alternating current circuit breaker connected in parallel to a resonant inductor-capacitor circuit.
  • the resonant circuit reacts against the negative impedance of the generated power arc to generate an oscillatory current alongside the direct current flowing through the circuit breaker.
  • the oscillatory current continues to build up until it is equal to the direct current, at which point the net current flowing through the circuit breaker is zero, which leads to the quenching of the power arc and thereby allows the safe opening of the circuit breaker.
  • the build-up of the oscillatory current can however be tenuous during its initial stages and this inherent uncertainty in achieving a zero net current leads to an unreliable circuit breaker.
  • DE 102005040432 Al discloses an apparatus including a circuit breaker connected in parallel with a series connection of a switch and a capacitor and with a surge arrester.
  • the switch is turned on during the opening of the circuit breaker to commutate the current in the apparatus to flow through the series connection of the switch and the capacitor instead of the circuit breaker.
  • circuit breakers mentioned above are designed to cope with voltages of approximately lOOkV, which are much lower than DC transmission line voltages of 500kV to 800kV.
  • these circuit breakers may be modified to include larger capacitive and inductive elements and surge arresters, but this would lead to increases in the overall size and weight and associated costs of the power plant.
  • a circuit breaker apparatus for use in high voltage direct current (HVDC) power transmission and reactive power compensation, the circuit breaker apparatus comprising first and second DC terminals for connection in use to first and second DC networks; the circuit breaker apparatus further comprising first, second and third circuit branches connected in parallel between the first and second DC terminals, the first circuit branch including a circuit breaker, the second circuit branch including at least one switching element and at least one capacitor connected in series, the or each switching element being controllable in use to switch the second circuit branch into and out of circuit, and the third circuit branch including a surge arrester, wherein the or each capacitor of the second circuit branch is pre-charged to a predetermined voltage so that the second circuit branch has a lower impedance than the first circuit branch .
  • HVDC high voltage direct current
  • the provision of the pre-charged capacitor bank ensures that turning-on of the switching element in use results in the successful commutation of the current flowing between the first and second DC terminals from the first circuit branch to the second circuit branch.
  • the subsequent reduction in current flow through the first circuit branch leads to the extinguishing of a power arc formed between the contacts of the circuit breaker. This not only minimises the risk of damage to the circuit breaker arising from a sustained power arc between its contacts, but also ensures a rapid response to instructions to carry out current interruption and thereby improves the efficiency of the circuit breaker apparatus .
  • the voltage across the pre-charged capacitor of the second circuit branch is opposite in polarity to the voltage across the first circuit branch before the second circuit branch is switched into circuit.
  • the circuit breaker apparatus may be configured in this manner so that the second circuit branch has lower impedance than the first circuit branch .
  • the second circuit branch may further include at least one inductor connected in series with the or each switching element and the or each capacitor.
  • inductor bank simplifies the design of the circuit breaker apparatus while helping to ensure adequate control over the rate of change in current in the second circuit branch.
  • including the inductor bank means that the control of the current characteristics in the second circuit branch is not dependent only on the parasitic inductance of the circuit.
  • the or each switching element may include a semiconductor device.
  • the semiconductor device may be an insulated gate bipolar transistor, a gate turn-off thyristor, a field effect transistor, an insulated gate commutated thyristor, an integrated gate commutated thyristor, or any other self commutated semiconductor switch .
  • Such semiconductor devices have a fast response time which allows the second circuit branch to be rapidly switched into circuit in response to the opening of the circuit breaker and thereby improves the efficiency of the circuit breaker apparatus.
  • the surge arrester may have variable impedance and may be configured so that the third circuit branch has lower impedance than the first and second circuit branches when the voltage across the capacitor is equal to or larger than the knee voltage of the surge arrester. Configuring the surge arrester in this manner results in the commutation of the current flowing between the first and second DC terminals to the third circuit branch when the aforementioned conditions are met. This allows the surge arrester to minimise the current flowing through the circuit breaker apparatus and thereby complete the current interruption process.
  • the surge arrester is controllable in use to provide a voltage to oppose the flow of current in the third circuit branch.
  • the surge arrester preferably includes at least one metal oxide varistor.
  • FIG. 1 shows a circuit breaker apparatus according to an embodiment of the invention. Detailed description of the preferred embodiment
  • Figure 1 shows a circuit breaker apparatus 10 comprising first and second DC terminals 12,14 and first, second and third circuit branches 16,18,20 connected in parallel between the first and second DC terminals 12,14.
  • the first DC terminal 12 is connected to a first portion 22 of a DC network and the second DC terminal 14 is connected to a second portion 24 of the DC network.
  • the circuit breaker apparatus 10 allows, e.g. a DC power source connected to the first terminal 12 to supply a load connected to the second terminal 14.
  • a fault condition the second terminal 14 becomes connected to ground and a fault current flows. Other fault conditions may also occur.
  • the first circuit branch 16 includes a circuit breaker 26, which is in the form of an SF 6 alternating current circuit breaker.
  • the second circuit branch 18 includes a power electronic switch (PES) , such as a thyristor 28, connected in series with a capacitor 30 and an inductor 32.
  • PES power electronic switch
  • the thyristor 28 is controllable to selectively allow current to flow in the second circuit branch 18.
  • the thyristor 28 is normally maintained off (by not turning it on) so that the second circuit branch 18 is out of circuit.
  • the capacitor 30 of the second circuit branch 18 is pre-charged to a negative voltage so that the voltage across the capacitor 30 is opposite in polarity to the voltage across the first and second DC terminals 12,14.
  • a charging unit 34 such as a DC power supply is connected in parallel with the capacitor 30 for the purpose of pre-charging the capacitor 30.
  • the charging unit 34 can be decoupled from the capacitor 30 so that it does not charge the capacitor 30 during the operation of the circuit breaker apparatus 10 to interrupt current flow.
  • the thyristor 28 may be replaced by a different PES in the form of a different semiconductor device.
  • a different PES in the form of a different semiconductor device.
  • an insulated gate bipolar transistor, a field effect transistor, a gate-turn-off thyristor, a gate- commutated thyristor, an insulated gate-commutated thyristor, an integrated gate-commutated thyristor or another self commutated semiconductor switch may be used .
  • the capacitor 30 and inductor 32 may be replaced by a plurality of capacitors and inductors respectively so as to provide different values of capacitance and inductance and thereby modify the electrical characteristics of the circuit breaker apparatus 10 to suit the associated power application.
  • the third circuit branch 20 includes a surge arrester 36 having a metal oxide varistor.
  • a current interruption process is triggered by the receipt of instructions to open the circuit breaker 26. This results in the separation of the circuit breaker contacts, which leads to an increase in voltage across the circuit breaker 26 and thereby results in the formation of a power arc between the separated contacts. Consequently current continues to flow in the first circuit branch 16 via the circuit breaker 26.
  • the thyristor 28 of the second circuit branch 18 is then turned on to switch the second circuit branch 18 into circuit.
  • the current flowing between the first and second DC terminals 12,14 begins to commutate from the first circuit branch 16 to the second circuit branch 18. This is because the second circuit branch 18 presents a lower impedance than the first circuit branch 16 as a result of the capacitor 30 being pre-charged to a negative voltage.
  • the commutation of current from the first circuit branch 16 to the second circuit branch 18 leads to a reduction in current flowing in the first circuit branch 16.
  • the power arc formed across the contacts is no longer sustainable.
  • the subsequent extinguishing of the power arc enables the circuit breaker 26 to be safely opened without risk of damage to the contacts of the circuit breaker 26.
  • the rate of increase in current in the second circuit branch 18 upon the turn-on of the thyristor 28 is dependent on the total inductance value of the inductor 32 and the parasitic inductance in the circuit breaker apparatus 10.
  • the total inductance value is preferably configured so that the rate of increase in current in the second circuit branch 18 is within the operational range of the thyristor 28 so as to avoid the risk of damage to the thyristor 28.
  • the flow of current in the second circuit branch 18 causes the negatively charged capacitor 30 to be charged towards a positive voltage.
  • the voltage across the capacitor 30 increases toward the voltage across the circuit breaker 26 while the voltage of the thyristor 28 reduces towards its on-state voltage, which is negligible compared to the capacitor voltage.
  • the capacitor 30 provides a voltage that opposes the current flowing through the second circuit branch 18 and thereby causes a reduction in the rate of increase in current in the second circuit branch 18. This continues until the voltage across the capacitor 30 is greater than the voltage across the first and second DC terminals 12,14, which in turns leads a reduction in current flowing between the first and second DC terminals 12,14.
  • the voltage across the capacitor 30 is imposed across the third circuit branch 20, which means that any change in voltage across the capacitor 30 leads to a change in voltage across the third circuit branch 20. Consequently, when the voltage across the capacitor 30 increases to a point where it is equal to the knee voltage of the surge arrester 36 (which preferably is configured to be higher than the DC Power Source voltage and, in particular, approximately 1.5 times higher) , the current flowing in the second circuit branch 18 begins to commutate from the second circuit branch 18 to the third circuit branch 20. This is because when the voltage across the third circuit branch 20 is equal to or exceeds the knee voltage of the surge arrester 36, the impedance of the surge arrester 36 drops to a level that is lower than the impedance in each of the first and second circuit branches 16,18. While there is current flowing in the surge arrestor 36 then the voltage across it is equal to the voltage across the circuit breaker apparatus 10.
  • the surge arrestor 36 limits the extent to which the capacitor 30 charges, and so helps to minimise the risk of the insulation of the various components in the circuit breaker apparatus 10 becoming compromised.
  • the extent to which the capacitor 30 is pre-charged preferably ensures that the impedance of the second circuit branch 18 is lower than the impedance of the first circuit branch 16 at least until the voltage across the capacitor 30 is zero. This allows the arc formed in the circuit breaker 26 to be extinguished before the voltage between the first and second DC terminals 12,14 becomes positive.
  • the circuit breaker apparatus can be used in a variety of applications.
  • the circuit breaker apparatus can be used in a metallic return transfer breaker to ensure successful commutation of current from earthed terminals of two mono-pole converters to the metallic return interconnecting the mono-pole converters so as to minimise the detrimental effects of "earth-current" on the surrounding environment.
  • the circuit breaker apparatus can also be used as part of a multi-terminal DC network.
  • the circuit breaker apparatus can be used to disconnect the affected electrical network from the multi-terminal DC network so as to allow continued power supply to other networks connected to the multi- terminal DC network.
  • the circuit breaker apparatus can also be employed in a multi-terminal DC network to switch one or more electrical networks into or out of circuit with the multi-terminal DC network so as to control power flow within the multi-terminal DC network .

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

Abstract

L'invention concerne un disjoncteur (10) à utiliser dans la transmission de puissance à courant continu haute tension (HVDC) et la compensation de puissance réactive. Le disjoncteur (10) comprend des première et seconde bornes CC (12, 14) pour une connexion en utilisation à des premier et second réseaux CC (22, 24) ; le disjoncteur (10) comprenant en outre des première, deuxième et troisième branches de circuit (16, 18, 20) connectées en parallèle entre les première et seconde bornes CC (12, 14), la première branche de circuit (16) comprenant un disjoncteur (26), la deuxième branche de circuit (18) comprenant au moins un élément de commutation (28) et au moins un banc de condensateurs (30) connectés en série, l'élément de commutation ou chaque élément de commutation (28) étant commandable en utilisation pour commuter la deuxième branche de circuit (18) en et hors circuit, et la troisième branche de circuit (20) comprenant un parasurtenseur (36), le banc de condensateurs (30) de la deuxième branche de circuit (18) étant préchargé à une tension prédéterminée de sorte que la deuxième branche de circuit (18) a une impédance inférieure à la première branche de circuit (16).
PCT/EP2011/051161 2011-01-27 2011-01-27 Disjoncteur Ceased WO2012100831A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/EP2011/051161 WO2012100831A1 (fr) 2011-01-27 2011-01-27 Disjoncteur

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2011/051161 WO2012100831A1 (fr) 2011-01-27 2011-01-27 Disjoncteur

Publications (1)

Publication Number Publication Date
WO2012100831A1 true WO2012100831A1 (fr) 2012-08-02

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Cited By (34)

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CN103441490A (zh) * 2013-08-16 2013-12-11 国家电网公司 一种多端直流系统用直流断路器及其控制方法
CN103441489A (zh) * 2013-08-16 2013-12-11 国家电网公司 一种多端直流系统用直流断路器及其控制方法
CN103457257A (zh) * 2013-08-16 2013-12-18 国家电网公司 一种多端直流系统用直流断路器及其控制方法
WO2014032692A1 (fr) * 2012-08-27 2014-03-06 Abb Technology Ltd Appareil agencé pour couper un courant électrique
CN103762547A (zh) * 2014-01-08 2014-04-30 西安交通大学 基于人工过零的模块式高压真空直流开断装置
CN104485266A (zh) * 2014-11-18 2015-04-01 华中科技大学 一种断路器燃弧时间控制装置及方法
CN105122408A (zh) * 2013-02-13 2015-12-02 阿尔斯通技术有限公司 电路中断设备
CN105186443A (zh) * 2015-10-21 2015-12-23 华中科技大学 一种自动充电型强制过零高压直流断路器
CN105244219A (zh) * 2014-07-02 2016-01-13 株式会社日立制作所 换向式直流断路器及其监视方法
WO2016007489A1 (fr) * 2014-07-07 2016-01-14 General Elctric Company Système et procédé de disjoncteur
EP3041015A1 (fr) 2015-01-05 2016-07-06 Alstom Technology Ltd Disjoncteur à courant continu
CN106099878A (zh) * 2016-08-04 2016-11-09 华中科技大学 一种电容充电型双向直流断路器及其应用
WO2016197973A1 (fr) * 2015-06-10 2016-12-15 许继集团有限公司 Disjoncteur à courant continu à haute vitesse préchargé et son procédé de commande, et support de stockage
EP3035471A4 (fr) * 2013-08-14 2017-03-29 Hyosung Corporation Disjoncteur à cc à haute tension
WO2017050103A1 (fr) * 2015-09-25 2017-03-30 全球能源互联网研究院 Disjoncteur à courant continu haute tension à ponts complets en cascade, procédé de réenclenchement rapide, et support d'informations
GB2542789A (en) * 2015-09-29 2017-04-05 Alstom Technology Ltd Fault protection for voltage source converters
FR3043833A1 (fr) * 2015-11-17 2017-05-19 Inst Supergrid Disjoncteur pour un reseau a courant continu haute tension, avec oscillation forcee de courant
US9692226B2 (en) 2012-08-23 2017-06-27 General Electric Technology Gmbh Circuit interruption device
CN107611937A (zh) * 2017-09-21 2018-01-19 南京南瑞继保电气有限公司 一种直流断路器的过电压保护电路及方法
CN107863761A (zh) * 2017-11-29 2018-03-30 中国南方电网有限责任公司电网技术研究中心 一种带饱和电抗器的高压直流断路器
US9972997B2 (en) 2012-08-23 2018-05-15 General Electric Technology Gmbh Circuit interruption device
US10002722B2 (en) 2015-02-20 2018-06-19 Abb Schweiz Ag Switching system for breaking a current and method of performing a current breaking operation
CN108365236A (zh) * 2018-01-05 2018-08-03 全球能源互联网研究院有限公司 一种应用于高压直流断路器下的供能装置
CN109921432A (zh) * 2019-04-18 2019-06-21 国网陕西省电力公司电力科学研究院 一种用于末端集中负荷的配电网综合无功调压补偿装置
WO2020136340A1 (fr) 2018-12-27 2020-07-02 Supergrid Institute Dispositif de coupure de courant pour courant continu haute tension avec circuit capacitif tampon et procédé de pilotage
WO2020136350A1 (fr) * 2018-12-27 2020-07-02 Supergrid Institute Dispositif de coupure de courant pour courant continu haute tension avec circuit d'oscillation adaptatif et procédé de pilotage
CN111971866A (zh) * 2018-03-22 2020-11-20 Abb电网瑞士股份公司 中性电路装置
WO2020244015A1 (fr) * 2019-06-04 2020-12-10 上海交通大学 Topologie de limiteur de courant continu appropriée pour un système de transmission de courant continu flexible
EP3783634A4 (fr) * 2018-04-19 2021-05-19 Mitsubishi Electric Corporation Disjoncteur à courant continu
WO2022029379A2 (fr) 2020-08-05 2022-02-10 Supergrid Institute Dispositif de coupure de courant pour courant électrique sous haute tension continue, installation avec un tel dispositif, procede de pilotage, et processus d'evaluation de l'integrite d'un conducteur electrique
EP4068326A4 (fr) * 2019-11-29 2023-08-16 Kabushiki Kaisha Toshiba Disjoncteur à courant continu
US20230275417A1 (en) * 2018-09-27 2023-08-31 Board Of Supervisors Of Louisiana State University And Agricultural And Mechanical College Dc circuit breaker with an alternating commutating circuit
US11798763B2 (en) 2019-03-22 2023-10-24 Supergrid Institute Current cut-off device for high-voltage direct current with resonator and switching
WO2025079868A1 (fr) * 2023-10-13 2025-04-17 한국전기연구원 Disjoncteur à courant continu de type à conversion de courant

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US5737162A (en) * 1995-08-08 1998-04-07 Mitsubishi Denki Kabushiki Kaisha Circuit breaking device
DE102005040432A1 (de) 2005-08-25 2007-03-01 Rwth Aachen Strombegrenzender Schalter

Cited By (56)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9972997B2 (en) 2012-08-23 2018-05-15 General Electric Technology Gmbh Circuit interruption device
US9692226B2 (en) 2012-08-23 2017-06-27 General Electric Technology Gmbh Circuit interruption device
WO2014032692A1 (fr) * 2012-08-27 2014-03-06 Abb Technology Ltd Appareil agencé pour couper un courant électrique
CN104620345A (zh) * 2012-08-27 2015-05-13 Abb技术有限公司 布置用于断开电流的装置
US9148011B2 (en) 2012-08-27 2015-09-29 Abb Technology Ltd Apparatus arranged to break an electrical current
CN104620345B (zh) * 2012-08-27 2016-10-26 Abb瑞士股份有限公司 布置用于断开电流的装置
CN105122408A (zh) * 2013-02-13 2015-12-02 阿尔斯通技术有限公司 电路中断设备
EP3035471A4 (fr) * 2013-08-14 2017-03-29 Hyosung Corporation Disjoncteur à cc à haute tension
CN103441489A (zh) * 2013-08-16 2013-12-11 国家电网公司 一种多端直流系统用直流断路器及其控制方法
CN103457257A (zh) * 2013-08-16 2013-12-18 国家电网公司 一种多端直流系统用直流断路器及其控制方法
CN103441490A (zh) * 2013-08-16 2013-12-11 国家电网公司 一种多端直流系统用直流断路器及其控制方法
CN103762547A (zh) * 2014-01-08 2014-04-30 西安交通大学 基于人工过零的模块式高压真空直流开断装置
WO2015103857A1 (fr) * 2014-01-08 2015-07-16 西安交通大学 Dispositif disjoncteur à courant continu haute tension à vide modulaire basé sur un passage par le point zéro artificiel
CN105244219A (zh) * 2014-07-02 2016-01-13 株式会社日立制作所 换向式直流断路器及其监视方法
CN105244219B (zh) * 2014-07-02 2017-09-19 株式会社日立产机系统 换向式直流断路器及其监视方法
WO2016007489A1 (fr) * 2014-07-07 2016-01-14 General Elctric Company Système et procédé de disjoncteur
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CN104485266A (zh) * 2014-11-18 2015-04-01 华中科技大学 一种断路器燃弧时间控制装置及方法
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