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WO2016194898A1 - Dispositif disjoncteur à courant continu - Google Patents

Dispositif disjoncteur à courant continu Download PDF

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Publication number
WO2016194898A1
WO2016194898A1 PCT/JP2016/066018 JP2016066018W WO2016194898A1 WO 2016194898 A1 WO2016194898 A1 WO 2016194898A1 JP 2016066018 W JP2016066018 W JP 2016066018W WO 2016194898 A1 WO2016194898 A1 WO 2016194898A1
Authority
WO
WIPO (PCT)
Prior art keywords
current
circuit
connection
transmission line
series
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/JP2016/066018
Other languages
English (en)
Japanese (ja)
Inventor
裕史 児山
隆太 長谷川
尚隆 飯尾
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
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 Toshiba Corp filed Critical Toshiba Corp
Priority to EP16803332.2A priority Critical patent/EP3306635B1/fr
Publication of WO2016194898A1 publication Critical patent/WO2016194898A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • H01H9/54—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
    • 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

  • Embodiments of the present invention relate to a DC current interrupting device suitable for a DC power transmission network.
  • DC power transmission is more efficient than conventional three-phase AC power transmission and can be installed with reduced costs. Being started.
  • DC power transmission requires a power converter such as a converter that converts the generated AC power into DC for DC power transmission and an inverter that converts the transmitted DC power into city AC.
  • a power converter such as a converter that converts the generated AC power into DC for DC power transmission and an inverter that converts the transmitted DC power into city AC.
  • the modular multi-level converter circuit that can output a voltage waveform close to a sine wave is being studied and put into practical use so that harmonics accompanying switching of the converter and inverter do not flow into the AC system.
  • the DC power transmission system can be installed at low cost when compared to the conventional AC power transmission system, and it can be constructed at a low cost, and a high-efficiency system with less transmission loss can be constructed. On the other hand, it is difficult to block the location where the system accident caused by lightning strikes.
  • the AC current can be cut off at high speed by a mechanical contact breaker at a timing at which the AC current crosses zero current every half cycle at an AC frequency of 50 [Hz] or 60 [Hz].
  • a mechanical contact cannot easily interrupt the current.
  • a large current always flows through the transmission line, so that a large conduction loss in the semiconductor element is constantly consumed.
  • FIG. 6A is a diagram showing a circuit configuration of the DC current interrupting device 4, and FIG. 6B is a specific circuit element configuration of the commutation circuit (H) 31 in FIG. 6A.
  • FIG. 6B is a specific circuit element configuration of the commutation circuit (H) 31 in FIG. 6A.
  • FIG. 6 only the positive line of the DC transmission line is shown, and the negative line is omitted.
  • the positive electrode line is shown in the figure, and the negative electrode line is omitted.
  • This DC current interrupting device 4 has a circuit configuration in which two series circuits 2 constituted by two mechanical contact type current disconnectors 21 are connected in parallel, and their midpoints are connected by a connection circuit 3 constituted by a commutation circuit 31. .
  • the commutation circuit 31 has a single-phase full bridge configuration using a capacitor as a DC voltage source.
  • the DC current interrupting device 4 is inserted in series at a required location in the transmission line 11 of the DC transmission network.
  • the two mechanical contact type current disconnectors 21 on the diagonal are turned off, and the current is kept on by using the two mechanical contact type current disconnectors 21. It is made to flow with current circuit 31 and mechanical contact type current disconnector 21. Then, the current flowing through the commutation circuit 31 is controlled to zero, and the two mechanical contact type current disconnectors 21 remaining at the moment when the current flowing through the mechanical contact type current disconnector 21 becomes zero are turned off. As a result, the accident current is interrupted.
  • the number of parts increases as a whole system, and the increase in the number of parts leads to an increase in cost and an increase in the size of the apparatus.
  • each of two different DC transmission lines is connected.
  • One end connected to the middle point of each series circuit and three or more series circuits including a series connection of two or more current disconnectors connected to the end, and the other ends all connected to each other at one point
  • a DC current interrupting device including three or more connection circuits including a commutation circuit that commutates current.
  • each of two different DC transmission lines is provided.
  • One end is connected to the middle point of each of the three or more series circuits including the series connection of two or more elements including commutation means connected to the end of the electric wire, and the other ends are all one point.
  • a DC current interrupting device is provided that includes three or more connection circuits including current disconnectors connected to each other.
  • FIG. 1 is a diagram showing a configuration of a DC current interrupting device according to a first embodiment of the present invention.
  • the DC current interrupting device is provided at a coupling point where the three DC transmission lines 11, 12, and 13 are electrically coupled.
  • the direct current transmission lines 11, 12, and 13 are connected to each other by a series circuit 2 including two mechanical contact type current disconnectors 21.
  • the series circuit 2 is configured to connect points a, b, and c on the line in a delta connection.
  • connection circuit 3 including the commutation circuit (H) 31 is connected to the middle point of the two mechanical contact type current disconnectors 21 of each series circuit 2, and the other end of each connection circuit 3. Are all connected to each other at a contact j.
  • connection circuits 3 correspond to a star connection.
  • the commutation circuit 31 has a single-phase full-bridge configuration using a capacitor as a voltage source. All of the mechanical contact type current disconnectors 21 of the series circuit 2 are controlled to be turned on / off by a control circuit (not shown) according to the steady operation and the occurrence of execution on any of the power transmission lines. The output voltage of the commutation circuit 31 of the connection circuit 3 is also controlled by the control circuit.
  • the control circuit turns on the mechanical contact type current disconnectors 21 in all the series circuits 2 so that the current is transmitted through the mechanical contact type current disconnectors 21.
  • the control circuit turns off the pair of mechanical contact type current disconnectors 2a sandwiching the contact j as shown in FIG. It flows through the flow circuit 31 and the mechanical contact type current disconnector 2b.
  • control circuit controls the output voltage and the amount of current so that the fault current if in the commutation circuit 31 becomes zero.
  • the mechanical contact type current disconnector 2b in which the accident current if flows is turned off to turn off the DC transmission line where the accident has occurred. 13 is blocked.
  • the configuration of the series circuit 2 is compared with the case where the conventional DC current interrupting device shown in FIG. 6 is individually connected to each of the DC power transmission lines 11, 12, and 13.
  • a direct current interrupting device capable of reducing the cost and size can be realized by reducing the scale by half and by reducing the total number of parts.
  • a semiconductor breaker can perform the same operation.
  • one mechanical contact type current disconnecting device 21 is arranged in each series circuit 2 with the middle point in between, but the series circuit 2 has the mechanical contact type current disconnecting device 21 in the middle point.
  • a configuration in which a plurality of them are connected in series may be used.
  • a plurality of the commutation circuits 31 may be connected in series to form the connection circuit 3. If the current control direction of the commutation circuit 31 is limited, a half bridge circuit may be used.
  • a reactor may exist in series on the line connecting the points a, b, and c.
  • the reactor suppresses the peak of the alternating current that flows in the event of an accident, lowers the frequency of the alternating current, and consequently lowers the slope of the alternating current, thereby facilitating current interruption in the mechanical contact type current disconnector 21. You can also.
  • FIG. 3 is a diagram illustrating a configuration of the DC current interrupting device according to the second embodiment.
  • the basic concept is the same as the configuration shown in FIG. 1, the same or equivalent components as those of the DC current interrupting device shown in FIG. The description will be given with the same reference numerals.
  • This embodiment is a configuration example of a DC current interrupting device at a connection point of four DC transmission lines 11 to 14. At the connection point, two adjacent DC transmission lines 11 to 14 are connected by a series circuit 2 including two mechanical contact type current disconnectors 21.
  • connection circuit 3 including the commutation circuit (H) 31 is connected to the middle point of the two mechanical contact type current disconnectors 21 of each series circuit 2, and the other end of each of the connection circuits 3 is connected All are connected to each other at the contact j.
  • the commutation circuit 31 has a single-phase full-bridge configuration using a capacitor as a voltage source as shown in FIG. All of the mechanical contact type current disconnectors 21 of the series circuit 2 are controlled to be turned on / off by a control circuit (not shown) according to the steady operation and the occurrence of execution on any of the power transmission lines.
  • the output voltage of the commutation circuit 31 of the connection circuit 3 is also controlled by the control circuit.
  • the current interruption operation of the DC current interruption device is the same as that of the first embodiment, and even if an accident occurs in any of the DC transmission lines 11 to 14, the DC transmission line in which the accident has occurred can be quickly It is possible to detach.
  • the number of components of the series circuit 2 can be halved compared to the case where the conventional DC current interrupting device shown in FIG. 6 is individually connected to each of the DC power transmission lines 11 to 14. As a result, it is possible to realize a direct current interrupting device that can reduce the number of parts, reduce the cost, and reduce the size.
  • the series circuit 2 can be realized by n half of the series circuit 2.
  • the number of parts can be halved from the conventional one by also configuring the connection points of five or more DC transmission lines in the same manner as in the present embodiment.
  • the DC power transmission line 11 is connected to the DC power transmission lines 13 and 14 through the series circuit 2.
  • the DC power transmission lines 12 and 13 or the DC power transmission lines 12 and 14 may be connected to the power transmission line 11. The same applies to other DC transmission lines.
  • FIG. 4 is a diagram illustrating a configuration of a DC current interrupting device according to the third embodiment.
  • the basic concept is the same as the configuration shown in FIG. 1, the same or equivalent components as those of the DC current interrupting device shown in FIG. The description will be given with the same reference numerals.
  • the DC current interrupting device has DC power transmission lines 11, 12, 13 respectively at the connection points where the three DC power transmission lines 11, 12, 13 are electrically coupled. Are connected to each other by a series circuit 2 including a reactor 22 and a semiconductor circuit breaker 23.
  • each semiconductor circuit breaker 23 has a configuration in which two semiconductor switching elements 231 are connected in series so as to face in opposite directions, and an arrester 232 is connected in parallel thereto.
  • the series circuit 2 has a configuration in which the points a, b, and c on the line are delta-connected at the connection point of the three DC transmission lines 11, 12, and 13. And one end of the connection circuit 3 provided with the mechanical contact-type current disconnector 32 is respectively connected to the midpoint of the reactor 22 and the semiconductor circuit breaker 23 of the series circuit 2, and all the other ends of the connection circuit 3 are contact points. j connected to each other. This corresponds to a star connection.
  • All of the semiconductor circuit breakers 23 of the series circuit 2 are controlled to be turned on / off by a control circuit (not shown) in accordance with the steady operation and the occurrence of execution on any of the power transmission lines.
  • the mechanical contact type current disconnector 32 of the connection circuit 3 is also controlled to be turned on / off by the control circuit.
  • an accident current if flows toward the DC transmission line where the accident occurred.
  • the control circuit detects an accident, it turns on the semiconductor circuit breaker 23 connected to the DC power transmission line where the accident occurred. Then, the accident current if is commutated from the reactor 22 connected to the DC transmission line where the accident has occurred and the mechanical contact type current disconnector 32 to the semiconductor breaker 23 that is turned on. At that time, since the timing when the mechanical contact type current disconnector 32 becomes zero current occurs, the mechanical contact type current disconnector 32 is turned off by the control circuit at that moment. Next, the semiconductor circuit breaker 23 in which the fault current is commutated is turned off. As a result, the DC transmission line where the accident occurred is blocked.
  • the configuration of the series circuit 2 is compared with the case where the conventional DC current interrupting device shown in FIG. 6 is individually connected to each of the DC power transmission lines 11, 12, and 13.
  • a direct current interrupting device capable of reducing the cost and size can be realized by reducing the scale by half and by reducing the total number of parts.
  • each element may be configured to face only one direction.
  • the arrester 232 may be connected in parallel to the individual semiconductor switching elements 231 or in parallel to the plurality of semiconductor switching elements 231, or a plurality of semiconductor circuit breakers 23 themselves may be connected in series.
  • the same configuration can be applied to a DC current interrupting device at a connection point of four or more DC transmission lines.
  • FIG. 5 is a diagram illustrating a configuration of a DC current interrupting device according to the fourth embodiment.
  • the basic concept is the same as the configuration shown in FIG. 1, the same or equivalent components as those of the DC current interrupting device shown in FIG. The description will be given with the same reference numerals.
  • This DC current interrupting device is configured such that each series circuit 2 is connected to two reactors 22 and two semiconductor circuit breakers 23 alternately. One end of each mechanical contact type current disconnector 32 is connected to the middle point e, f, g of each series circuit 2, and the other end of the mechanical contact type current disconnector 32 is all connected to each other at a contact j. Yes.
  • a mechanical contact type current disconnector 33 is connected to the junction of the reactor 22 and the semiconductor circuit breaker 23 that are not connected to the midpoints e, f, and g of the series circuit 2.
  • the other end of 33 is connected to the junction of the reactor 22 and the semiconductor circuit breaker 23 of the adjacent series circuit 2.
  • the mechanical contact type current disconnector 33 connects the junction points of the reactor 22 and the semiconductor circuit breaker 23 belonging to each series circuit 2 branched into two from the same DC transmission line.
  • All of the semiconductor circuit breakers 23 of the series circuit 2 are controlled to be turned on / off by a control circuit (not shown) in accordance with the steady operation and the occurrence of execution on any of the power transmission lines.
  • the on / off operation of the mechanical contact type current disconnectors 32 and 33 of the connection circuit 3 is also controlled by the control circuit.
  • the operation at the time of current interruption of the DC current interruption device according to this embodiment is the same as that of the third embodiment, and even if an accident occurs in any DC transmission line, the DC transmission line in which the accident has occurred is disconnected.
  • the voltage applied to the mechanical contact type current disconnectors 32 and 33 is lower than that of the configuration of the third embodiment, the required insulation resistance is reduced. Then, since the insulation distance is shortened and the mechanical contact type current disconnectors 32 and 33 having a low switching speed and a low price can be used, it is possible to construct a DC current interrupting device capable of further reducing the cost.
  • the bridge circuit formed by the series circuit 2 and the connection circuit 3 can be further multi-staged.
  • the current interruption operation of the DC current interruption device in that case is the same as that of the fourth embodiment, and even if an accident occurs in any DC transmission line, the DC transmission line in which the accident has occurred can be disconnected in a short time. Is possible.
  • the DC current interruption can be further reduced by using a slower and cheaper mechanical contact type current disconnector. It is also possible to construct a device.
  • a DC current interrupting device can be configured similarly.
  • the series circuit 2 and the connection circuit 3 shown in FIG. 5 can be replaced with the series circuit 2 and the connection circuit 3 shown in FIG. 1, respectively.
  • the series circuit 2 may have a configuration in which, for example, four or more mechanical contact type current disconnectors 21 are directly connected.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Keying Circuit Devices (AREA)

Abstract

Selon un mode de réalisation, l'invention concerne un dispositif disjoncteur à courant continu qui est disposé au niveau d'un point de connexion, à l'intérieur d'un réseau de transport d'énergie en courant continu (CC), auquel au moins trois câbles de transport d'énergie CC (11-13) sont électriquement connectés. Le dispositif disjoncteur à courant continu est pourvu : d'au moins trois circuits série (2) connectés aux extrémités de deux câbles de transport d'énergie CC différents, lesdits circuits (2) comprenant des connexions en série à au moins deux sectionneurs de courant (21) ; et d'au moins trois circuits de connexion électrique (3), une extrémité de chacun desdits circuits (3) étant connectée au point médian des circuits série et les autres extrémités de chacun desdits circuits (3) étant toutes connectées au niveau d'un point unique, lesdits circuits (3) comprenant un circuit de commutation (31) pour commuter le courant.
PCT/JP2016/066018 2015-06-02 2016-05-31 Dispositif disjoncteur à courant continu Ceased WO2016194898A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP16803332.2A EP3306635B1 (fr) 2015-06-02 2016-05-31 Dispositif disjoncteur à courant continu

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2015-112055 2015-06-02
JP2015112055A JP6591204B2 (ja) 2015-06-02 2015-06-02 直流電流遮断装置

Publications (1)

Publication Number Publication Date
WO2016194898A1 true WO2016194898A1 (fr) 2016-12-08

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2016/066018 Ceased WO2016194898A1 (fr) 2015-06-02 2016-05-31 Dispositif disjoncteur à courant continu

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EP (1) EP3306635B1 (fr)
JP (1) JP6591204B2 (fr)
WO (1) WO2016194898A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6844352B2 (ja) * 2017-03-17 2021-03-17 株式会社明電舎 直流遮断装置
WO2019035180A1 (fr) * 2017-08-15 2019-02-21 株式会社東芝 Dispositif de coupure de courant continu
JP6456575B1 (ja) * 2018-04-19 2019-01-23 三菱電機株式会社 直流遮断器
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
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
FR3094136B1 (fr) * 2019-03-22 2021-04-02 Inst Supergrid Dispositif de coupure de courant pour courant continu haute tension avec résonateur et commutation
EP4411772A4 (fr) * 2021-09-27 2024-12-04 Mitsubishi Electric Corporation Disjoncteur de courant continu
WO2024084643A1 (fr) * 2022-10-20 2024-04-25 株式会社東芝 Disjoncteur cc

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5790830A (en) * 1980-11-26 1982-06-05 Tokyo Shibaura Electric Co Dc breaker
JPS6333537U (fr) * 1987-04-23 1988-03-04
WO2014094847A1 (fr) * 2012-12-19 2014-06-26 Siemens Aktiengesellschaft Dispositif pour commuter un courant continu dans un pôle d'un réseau à courant continu
JP2014235834A (ja) * 2013-05-31 2014-12-15 株式会社東芝 直流電流遮断装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55121232A (en) * 1979-03-10 1980-09-18 Tokyo Shibaura Electric Co Multiterminal system dc breaker
WO2013131581A1 (fr) * 2012-03-09 2013-09-12 Siemens Aktiengesellschaft Dispositif de commutation d'un courant continu dans un pôle d'un réseau de tension continue
JP5265063B1 (ja) * 2012-09-05 2013-08-14 三菱電機株式会社 直流遮断器

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5790830A (en) * 1980-11-26 1982-06-05 Tokyo Shibaura Electric Co Dc breaker
JPS6333537U (fr) * 1987-04-23 1988-03-04
WO2014094847A1 (fr) * 2012-12-19 2014-06-26 Siemens Aktiengesellschaft Dispositif pour commuter un courant continu dans un pôle d'un réseau à courant continu
JP2014235834A (ja) * 2013-05-31 2014-12-15 株式会社東芝 直流電流遮断装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3306635A4 *

Also Published As

Publication number Publication date
JP6591204B2 (ja) 2019-10-16
EP3306635A1 (fr) 2018-04-11
JP2016225198A (ja) 2016-12-28
EP3306635B1 (fr) 2019-10-30
EP3306635A4 (fr) 2019-01-09

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