WO2018212210A1 - Disjoncteur et appareillage de commutation - Google Patents

Disjoncteur et appareillage de commutation Download PDF

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Publication number
WO2018212210A1
WO2018212210A1 PCT/JP2018/018847 JP2018018847W WO2018212210A1 WO 2018212210 A1 WO2018212210 A1 WO 2018212210A1 JP 2018018847 W JP2018018847 W JP 2018018847W WO 2018212210 A1 WO2018212210 A1 WO 2018212210A1
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WO
WIPO (PCT)
Prior art keywords
phase
circuit
conductor
conductors
distance
Prior art date
Application number
PCT/JP2018/018847
Other languages
English (en)
Japanese (ja)
Inventor
進 小鶴
堀之内　克彦
Original Assignee
三菱電機株式会社
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 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to DE112018002541.1T priority Critical patent/DE112018002541T5/de
Priority to JP2019518820A priority patent/JP6714948B2/ja
Publication of WO2018212210A1 publication Critical patent/WO2018212210A1/fr

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B11/00—Switchgear having carriage withdrawable for isolation
    • H02B11/28—Earthing arrangements
    • 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
    • H01H33/53—Cases; Reservoirs, tanks, piping or valves, for arc-extinguishing fluid; Accessories therefor, e.g. safety arrangements, pressure relief devices
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B11/00—Switchgear having carriage withdrawable for isolation
    • H02B11/02—Details
    • H02B11/04—Isolating-contacts, e.g. mountings or shieldings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B11/00—Switchgear having carriage withdrawable for isolation
    • H02B11/12—Switchgear having carriage withdrawable for isolation with isolation by horizontal withdrawal
    • H02B11/167—Switchgear having carriage withdrawable for isolation with isolation by horizontal withdrawal truck type

Definitions

  • the present application relates to a circuit breaker and a switch gear, and more particularly to an arrangement structure of conductors housed in the circuit breaker and the switch gear.
  • Low-voltage, medium-voltage, or high-voltage power distribution facilities are indispensable equipment systems such as buildings and factories as a social infrastructure for power supply and demand.
  • the safety and reliability are fully considered not only for manufacturers but also for installation work and general operation and maintenance.
  • a fault such as a ground fault or a short circuit may occur due to the insulation function of the electric circuit being impaired due to the invasion of small animals or foreign objects, insulation deterioration due to aging, or equipment damage due to earthquakes.
  • a closing device such as a switchgear
  • a large current arc is generated, and the vicinity of the arc becomes a plasma state of about 10,000 to 20,000 degrees.
  • the conductors that are three-phase electric paths are usually arranged at equal intervals, and the conductor located in the middle is arranged from the conductor surface when a three-phase alternating current is applied.
  • the temperature rise is the highest compared to the other two phases due to the radiation and convection effects. Therefore, it is necessary to perform a heat dissipation design that suppresses the temperature rise of the conductor.
  • This application is for solving such a problem, and it aims at providing the circuit breaker which can suppress the influence from the radiation
  • the circuit breaker disclosed in this application is Provided in each of the three-phase circuit conductors, each of the three-phase circuit conductors, and a high-speed grounding input device that is connected to ground the interrupting part in the case of a short circuit, the interrupting part that interrupts the current flowing in the event of a short circuit,
  • the distance between the first phase and second phase circuit conductors is Lrs
  • the distance between the second and third phase circuit conductors is Lst
  • the distance between the third phase and the first phase circuit conductor is Ltr
  • the distance between the first phase circuit conductor and the ground metal is Lre
  • the distance between the second phase circuit conductor and the ground metal is Lse
  • the distance from the third phase circuit conductor to the ground metal is Lte
  • the three-phase circuit conductors are disposed so that the high-speed
  • circuit breaker disclosed in the present application it is possible to suppress the influence of convection and radiation when energizing current generated by the proximity of the conductor, and the cost of heat dissipation design of the circuit breaker. Become.
  • the number of high-speed ground input devices can be reduced, and the reliability when operating the high-speed ground input device is improved.
  • FIG. 4 is a structural conceptual diagram of a switchgear according to a second embodiment.
  • FIG. 1 is a perspective view of the circuit breaker according to the first embodiment
  • FIG. 2 is a conceptual diagram of the structure of the circuit breaker (both sides) according to the first embodiment
  • FIG. 3 is a single line connection showing the circuit breaker according to the first embodiment.
  • 4 and 4 are explanatory diagrams for explaining the arrangement of the three-phase conductors in the circuit breaker according to the first embodiment.
  • the names of the three phases are R phase, S phase, and T phase. 1 and FIG. 2, a breaker 100, an interelectrode insulator 101, a high-speed ground input device 102, and an insulator 103 of a high-speed ground input device are disposed inside the circuit breaker 1.
  • the insulator 103 is cast-insulated integrally with the high-speed grounding thrower 102, or a high-speed grounding thrower is assembled in its interior as an insulating case-like part produced by casting or molding, and is detachable. May be.
  • the high-speed ground thrower 102 is a plug-in thrower provided with a plug contact portion 102c, and has a structure in which a portion that needs to be replaced after the operation at the time of arc generation can be detached from the breaker body.
  • One end portion 102b of the high-speed grounding input device 102 is electrically and mechanically fastened with a fastening member such as a bolt to the end portion of the R-phase circuit conductor 2b connected to the pole 100a on one side of the interrupting portion 100.
  • the other end of the R-phase circuit conductor 2b is a contact 20b having an insertion contact structure.
  • the other end 102a of the high-speed earthing device 102 is a grounding conductor circuit 104 which is connected to the main body grounding contact 104a of the circuit breaker 1 and via a grounding terminal 104b provided in the circuit breaker chamber of the switchgear.
  • a short-circuit current is applied from the ground conductor 104c of the switch gear to the ground.
  • the grounding conductor circuit 104, the main body grounding contact 104a, the grounding terminal 104b, and the grounding conductor 104c have a short-time energization current and energization time according to switchgear standards such as IEC (International Electrotechnical Commission) and circuit breakers.
  • the high-speed grounding input device 102 is fastened by fastening means such as bolts that can be attached and detached. However, the main body ground contact 104a and the ground terminal 104b are in sliding contact.
  • one end 105b of the high-speed earthing device 105 is electrically and mechanically fastened by a fastening member such as a bolt and an R-phase circuit conductor 2a that is connected to the pole 100b on the other side of the breaker 100. Yes.
  • the other end portion 105 a is connected to the main body ground contact 104 a of the circuit breaker 1 by a ground conductor circuit 104 and is configured in the same manner as the high-speed ground input device 102.
  • the blocking unit 100 is disposed in a vacuum and is usually called a vacuum valve.
  • the high-speed ground input devices 102 and 105 configured as described above are turned on to bypass the arc current and flow to the ground conductor circuit 104 to extinguish the arc.
  • the circuit breaker 1 includes wheels 106 and can be pulled out from the operating position to the disconnect position within the switch gear.
  • the high-speed grounding device 102 is disposed on the R-phase circuit conductors 2b and 2a, and the T-phase circuit conductors 4a and 4b are also grounded at high speed. A thrower is placed. However, a high-speed grounding device is not disposed on the S-phase circuit conductors 3a and 3b.
  • the distance between the circuit conductors of the R-phase circuit conductor 2b and the S-phase circuit conductor 3b is Lrs
  • the distance between the circuit conductors of the S-phase circuit conductor 3b and the T-phase circuit conductor 4b is Lst
  • the distance between the circuit conductors of the T-phase circuit conductor 4b and the R-phase circuit conductor 2b is Ltr
  • the distance between the R-phase circuit conductor 2b and the ground metal is Lre
  • the distance between the S-phase circuit conductor 3b and the ground metal is Lse
  • the R-phase circuit conductor 2b, the S-phase circuit conductor 3b, and the T-phase circuit conductor 4b are arranged so that That is, when the insulation strength between the TR phases is the weakest among the insulation strength between the RS phases
  • the ground metal refers to the casing of the circuit breaker 1, but may be a metal case, a metal plate, a metal cover, or the like connected to the ground shielding the circuit conductor.
  • the high-speed grounding devices 102 and 105 are attached to the R-phase electric conductor 2b and the T-phase electric conductor 4b. Even if a short circuit between the circuit conductors occurs, the configuration of the circuit conductor is such that only the short circuit between the T-phase and the R-phase is required, so that a high-speed grounding input device for three phases is unnecessary, and the cost can be reduced.
  • positioning of the electrical path conductor shown in FIG. 4 shows an example, and is not limited to the arrangement configuration of a figure.
  • FIG. 4 the arrangement between the circuit conductors 2 b, 3 b, 4 b of one phase of the both-side circuit breaker has been described, but the same arrangement configuration is applied to the circuit conductors 2 a, 3 a, 4 a of the other phase. You may design. Normally, as described above, since the temperature rise of the S-phase circuit conductor is the highest, the S-phase circuit conductor is kept away from the T-phase and R-phase circuit conductors, and Ltr is minimized.
  • FIG. FIG. 5 is a conceptual diagram of the structure of the switchgear according to the second embodiment, where (a) is a front view and (b) is a side cross-sectional view.
  • the internal configuration of the switch gear 1000 will be described with reference to FIG.
  • the interior of the ground metal casing 6 is partitioned into a plurality of compartments.
  • the circuit breaker compartment 7 houses the circuit breaker 1 described in the first embodiment, and the circuit breaker 1 can be pulled out from the front side.
  • disconnections 8a and 8b of the main circuit are fixedly provided at a predetermined interval in the vertical direction.
  • the upper left part of the circuit breaker compartment 7 is a control device compartment 9 in which a control device (not shown) is accommodated.
  • a bus compartment 12 On the back side of the circuit breaker compartment 7 is a bus compartment 12 in which a three-phase bus 10 is supported by a support insulator 11 and is provided with a disconnection portion 8a and a bus 10 connected to one end of the circuit breaker.
  • a branch conductor 13 made up of an R-phase branch conductor 13R, an S-phase branch conductor 13S, and a T-phase branch conductor 13T.
  • L 1 rs is the distance between the conductors of the R-phase branch conductor 13R and the S-phase branch conductor 13S.
  • the distance between the conductors of the S-phase branch conductor 13S and the T-phase branch conductor 13T is L 1 st
  • the R-phase and T-phase branch conductors are connected to a high-speed ground input device 14 disposed above the bus compartment 12.
  • the load side conductor 16 includes an R phase load side conductor 16R, an S phase load side conductor 16S, and a T phase load side conductor 16T.
  • the distance between the conductors of the R-phase load-side conductor 16R and the S-phase load-side conductor 16S is L 2 rs
  • the distance between the conductors of the S-phase load-side conductor 16S and the T-phase load-side conductor 16T is L 2 st
  • L 2 tr When the distance between the conductors of the T-phase load side conductor 16T and the R-phase load side conductor 16R is L 2 tr, L 2 rs> L 2 tr L 2 st> L 2 tr It is arranged so that.
  • the disconnecting portion 8b connected to the other end of the circuit breaker 1 and the cable 15 are provided with an R-phase load-side conductor 16R and a T-phase load-side conductor 16T via a current transformer 17 in the middle.
  • the S-phase load-side conductor 16 ⁇ / b> S is directly connected to the cable 15 without going through the current transformer 17.
  • the cable 15 is pulled out of the switchgear 1000 and connected to another power device.
  • the arrangement of the branch conductors and load conductors of each phase is configured such that the distance between the S-phase conductor and the other-phase (R-phase, T-phase) conductor is increased.
  • the internal configuration of the switchgear 1000 shown in FIG. 5 is an example, and is not limited to the arrangement shown in the figure.
  • the circuit breaker compartment 7 that houses the circuit breaker 1, the bus compartment 12, the cable compartment 18, and the control equipment compartment 9 may be provided, but the cable compartment 18 may not be provided, and other configurations may be used.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Gas-Insulated Switchgears (AREA)
  • Trip Switchboards (AREA)

Abstract

Lorsqu'un courant CA triphasé traverse un disjoncteur, les effets du rayonnement et de la convection depuis la surface du conducteur varient en fonction du conducteur, ce qui augmente le coût de la conception de dissipation de chaleur. Par conséquent, la présente invention comprend : des conducteurs de trajet électrique (2a, 3a, 4a) de trois phases ; des unités de rupture (100) disposées sur chacun des conducteurs de trajet électrique de trois phases, les unités de rupture (100) coupant un courant circulant lorsqu'un court-circuit se produit ; et un dispositif de mise à la terre à haute vitesse (102) connecté afin de mettre à la terre les unités de rupture (100) lorsqu'un court-circuit se produit. Les conducteurs de trajet électrique sont disposés de sorte que la distance entre ceux-ci varie.
PCT/JP2018/018847 2017-05-17 2018-05-16 Disjoncteur et appareillage de commutation WO2018212210A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE112018002541.1T DE112018002541T5 (de) 2017-05-17 2018-05-16 Schaltkreisunterbrecher und Schaltapparat
JP2019518820A JP6714948B2 (ja) 2017-05-17 2018-05-16 遮断器及びスイッチギヤ

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017097834 2017-05-17
JP2017-097834 2017-05-17

Publications (1)

Publication Number Publication Date
WO2018212210A1 true WO2018212210A1 (fr) 2018-11-22

Family

ID=64273798

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2018/018847 WO2018212210A1 (fr) 2017-05-17 2018-05-16 Disjoncteur et appareillage de commutation

Country Status (3)

Country Link
JP (1) JP6714948B2 (fr)
DE (1) DE112018002541T5 (fr)
WO (1) WO2018212210A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4154993A (en) * 1977-09-26 1979-05-15 Mcgraw-Edison Company Cable connected drawout switchgear
JPS54122031U (fr) * 1978-02-15 1979-08-27
JPS55156507U (fr) * 1979-04-23 1980-11-11
JPH04261311A (ja) * 1991-01-07 1992-09-17 Mitsubishi Electric Corp 前面保守形閉鎖配電盤及びその製造方法
JP2005137147A (ja) * 2003-10-31 2005-05-26 Toshiba Corp スイッチギヤ
JP2007252147A (ja) * 2006-03-17 2007-09-27 Mitsubishi Electric Corp スイッチギヤ
WO2015178160A1 (fr) * 2014-05-21 2015-11-26 三菱電機株式会社 Disjoncteur à suppresseur d'arc et équipement de réception/distribution de courant l'utilisant

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4154993A (en) * 1977-09-26 1979-05-15 Mcgraw-Edison Company Cable connected drawout switchgear
JPS54122031U (fr) * 1978-02-15 1979-08-27
JPS55156507U (fr) * 1979-04-23 1980-11-11
JPH04261311A (ja) * 1991-01-07 1992-09-17 Mitsubishi Electric Corp 前面保守形閉鎖配電盤及びその製造方法
JP2005137147A (ja) * 2003-10-31 2005-05-26 Toshiba Corp スイッチギヤ
JP2007252147A (ja) * 2006-03-17 2007-09-27 Mitsubishi Electric Corp スイッチギヤ
WO2015178160A1 (fr) * 2014-05-21 2015-11-26 三菱電機株式会社 Disjoncteur à suppresseur d'arc et équipement de réception/distribution de courant l'utilisant

Also Published As

Publication number Publication date
DE112018002541T5 (de) 2020-02-20
JP6714948B2 (ja) 2020-07-01
JPWO2018212210A1 (ja) 2019-11-07

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