WO2020240781A1 - Relais de commutation de changeur de prise en charge et changeur de prise en charge - Google Patents

Relais de commutation de changeur de prise en charge et changeur de prise en charge Download PDF

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Publication number
WO2020240781A1
WO2020240781A1 PCT/JP2019/021568 JP2019021568W WO2020240781A1 WO 2020240781 A1 WO2020240781 A1 WO 2020240781A1 JP 2019021568 W JP2019021568 W JP 2019021568W WO 2020240781 A1 WO2020240781 A1 WO 2020240781A1
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WO
WIPO (PCT)
Prior art keywords
switch
valve
terminal
cam
tap
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Application number
PCT/JP2019/021568
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English (en)
Japanese (ja)
Inventor
江口　直紀
真一郎 阿部
Original Assignee
株式会社東芝
東芝エネルギーシステムズ株式会社
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
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Application filed by 株式会社東芝, 東芝エネルギーシステムズ株式会社 filed Critical 株式会社東芝
Priority to CN201980096794.7A priority Critical patent/CN113874969A/zh
Priority to JP2021521696A priority patent/JP7119226B2/ja
Priority to PCT/JP2019/021568 priority patent/WO2020240781A1/fr
Publication of WO2020240781A1 publication Critical patent/WO2020240781A1/fr

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F29/00—Variable transformers or inductances not covered by group H01F21/00
    • H01F29/02—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings
    • H01F29/04—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings having provision for tap-changing without interrupting the load current

Definitions

  • the embodiment of the present invention relates to a switching switch for a load tap changer and a load tap changer.
  • the load tap changer is a device that switches taps during transformer operation (during load).
  • the load tap changer includes a tap selector and a switching switch.
  • the tap selector selects the tap to operate in the transformer tap winding.
  • the switching switch switches the circuit to the selected tap.
  • the switching switch has a current limiting resistor that is temporarily energized prior to switching the circuit.
  • the current limiting resistor generates heat as it is energized. It is required to suppress the heat generation of the current limiting resistor.
  • An object to be solved by the present invention is to provide a switching switch for a load tap changer and a load tap changer capable of suppressing heat generation of a current limiting resistor.
  • the switching switch of the load tap changer of the embodiment has a first tap terminal, a second tap terminal, a valve, a first current limiting resistor, and a second current limiting resistor.
  • the first tap terminal and the second tap terminal are connected to the tap selector of the load tap changer.
  • the valve is connected to the first tap terminal via the first valve switch and is connected to the second tap terminal via the second valve switch.
  • the first current limiting resistor is connected to the first tap terminal via the first resistance switch, and is connected to the first tap terminal in parallel with the valve.
  • the second current limiting resistor is connected to the second tap terminal via the second resistance switch, and is connected to the second tap terminal in parallel with the valve.
  • the perspective view of the switching switch of an embodiment. Perspective view of the switching unit.
  • the second explanatory view of the operation of the valve opening / closing mechanism. A perspective view of the fixed portion of the switch assembly as viewed from the -R direction.
  • the perspective view of the second movable part. Perspective view of the cam unit.
  • FIG. 4 is a fourth explanatory view of the operation of the moving portion.
  • FIG. 5 is a fifth explanatory view of the operation of the moving portion.
  • Explanatory drawing of the 1st connection lever Explanatory drawing of the 2nd connection lever.
  • the perspective view of the 2nd cam rotation control mechanism Timing chart of the switching operation of the switching switch. It is explanatory drawing of the change of the energization state in the switching operation from the 1st tap terminal to the 2nd tap terminal. It is explanatory drawing of the change of the energization state in the reverse switching operation from the 2nd tap terminal to the 1st tap terminal.
  • the operation explanatory view of the valve opening and closing mechanism at the time A The operation explanatory view of the 2nd movable part at the time A.
  • the first operation explanatory view of the 2nd cam rotation control mechanism at the time A The second operation explanatory drawing of the 2nd cam rotation control mechanism at the time A.
  • the operation explanatory view of the 1st movable part at the time C The operation explanatory view of the valve opening and closing mechanism at the time C.
  • the operation explanatory view of the 2nd movable part at the time C The first operation explanatory drawing of the 2nd cam rotation control mechanism at the time C.
  • the operation explanatory drawing of the 1st movable part at the time D The operation explanatory view of the valve opening and closing mechanism at the time D.
  • the operation explanatory view of the 2nd movable part at the time D The first operation explanatory drawing of the 2nd cam rotation control mechanism at the time D.
  • the second operation explanatory drawing of the 2nd cam rotation control mechanism at the time D The operation explanatory view of the 1st movable part at the time F.
  • the operation explanatory view of the valve opening and closing mechanism at the time F The first operation explanatory drawing of the 2nd cam rotation control mechanism at the time F.
  • the operation explanatory drawing of the 1st movable part at the time H The operation explanatory drawing of the 1st movable part at the time H.
  • the operation explanatory drawing of the valve opening and closing mechanism at the time H The first operation explanatory drawing of the 2nd cam rotation control mechanism at the time H.
  • the operation explanatory view of the 1st movable part at the time of Q The operation explanatory view of the valve opening and closing mechanism at the time of Q.
  • the operation explanatory view of the 2nd movable part at the time of Q The first operation explanatory view of the 2nd cam rotation control mechanism at the time of Q.
  • FIG. 1 is a perspective view of the load tap changer 1 of the embodiment.
  • the load tap changer 1 is a device that adjusts the voltage by changing the turn ratio (transformation ratio) of the transformer in the operating state.
  • the load tap changer 1 includes a tap selector 2, a drive mechanism 5, and a switching switch 10.
  • the tap selector 2 performs a selection operation for selecting a tap to be operated in the transformer tap winding.
  • the drive mechanism 5 drives the tap selector 2 by a driving force transmitted from an electric operation device (not shown) via a drive shaft 6.
  • the switching switch 10 performs a switching operation of switching the circuit to the selected tap.
  • the switching switch 10 is arranged inside the cylindrical container 10a and immersed in insulating oil.
  • FIG. 2 is a circuit diagram of the switching switch 10 of the embodiment, and shows one phase of the three-phase alternating current. Unless otherwise specified, the configuration of the switching switch 10 per phase will be described below.
  • the switching switch 10 is a small-capacity switching switch having one valve V.
  • the switching switch 10 switches the circuit between the first tap terminal T1 and the second tap terminal T2.
  • the first tap terminal T1 and the second tap terminal T2 are connected to the tap selector 2 shown in FIG. 1 by wiring 3.
  • the changeover switch 10 has a valve V, a first valve switch SV1, and a second valve switch SV2.
  • the switching switch 10 further includes a first current limiting resistor R1, a first resistance switch SR1, a second current limiting resistor R2, and a second resistance switch SR2.
  • the changeover switch 10 further includes a first energization switch SM1 and a second energization switch SM2.
  • Valve V is a vacuum circuit breaker that uses vacuum as an insulating / arc extinguishing medium.
  • the first end of the valve V is connected to the first tap terminal T1 via the first valve switch SV1.
  • the first end of the valve V is connected to the second tap terminal T2 via the second valve switch SV2.
  • the second end of the valve V is connected to the neutral terminal 18.
  • the first valve switch SV1 has a valve switch terminal 35V, a valve switch common terminal 32V, and a valve switch conductor 45V.
  • the valve switch terminal 35V is connected to the first end of the valve V.
  • the valve switch common terminal 32V is a part of the common terminal 32 connected to the first tap terminal T1.
  • the valve switch conductor 45V can be brought into contact with and separated from the valve switch terminal 35V and the valve switch common terminal 32V.
  • the first valve switch SV1 is closed.
  • the first valve switch SV1 is opened.
  • the second valve switch SV2 is formed in the same manner as the first valve switch SV1.
  • the first end of the first current limiting resistor R1 is connected to the first tap terminal T1 via the first resistance switch SR1.
  • the second end of the first current limiting resistor R1 is connected to the neutral point terminal 18.
  • the first current limiting resistor R1 is connected to the first tap terminal T1 in parallel with the valve V.
  • the first end of the second current limiting resistor R2 is connected to the second tap terminal T2 via the second resistance switch SR2.
  • the second end of the second current limiting resistor R2 is connected to the neutral point terminal 18.
  • the second current limiting resistor R2 is connected to the second tap terminal T2 in parallel with the valve V.
  • the first resistance switch SR1 has a resistance switch terminal 35R, a resistance switch common terminal 32R, and a resistance switch conductor 55R.
  • the resistance switch terminal 35R is connected to the first end of the first current limiting resistor R1.
  • the resistance switch common terminal 32R is a part of the common terminal 32 connected to the first tap terminal T1.
  • the resistance switch conductor 55R can be brought into contact with and separated from the resistance switch terminal 35R and the resistance switch common terminal 32R.
  • the first resistance switch SR1 is closed.
  • the resistance switch conductor 55R is separated from the resistance switch terminal 35R and the resistance switch common terminal 32R, the first resistance switch SR1 is opened.
  • the second resistance switch SR2 is formed in the same manner as the first resistance switch SR1.
  • the first energizing switch SM1 is connected to the first tap terminal T1 in parallel with the valve V.
  • the second energizing switch SM2 is connected to the second tap terminal T2 in parallel with the valve V.
  • the first energizing switch SM1 has an energizing switch terminal 35M, an energizing switch common terminal 32M, and an energizing switch conductor 45M.
  • the energizing switch terminal 35M is connected to the neutral point terminal 18.
  • the energization switch common terminal 32M is a part of the common terminal 32 connected to the first tap terminal T1.
  • the energizing switch conductor 45M can be brought into contact with and separated from the energizing switch terminal 35M and the energizing switch common terminal 32M.
  • the first resistance switch SR1 When the energizing switch conductor 45M comes into contact with the energizing switch terminal 35M and the energizing switch common terminal 32M, the first resistance switch SR1 is closed. When the energizing switch conductor 45M is separated from the energizing switch terminal 35M and the energizing switch common terminal 32M, the first resistance switch SR1 is opened.
  • the second energizing switch SM2 is formed in the same manner as the first energizing switch SM1.
  • FIG. 3 is a perspective view of the switching switch 10 of the embodiment.
  • the switching switch 10 shown in FIG. 3 is arranged inside the cylindrical container 10a shown in FIG.
  • the Z direction, the R direction and the ⁇ direction of the polar coordinate system are defined as follows.
  • the Z direction is the direction of the central axis of the switching switch 10.
  • the Z direction is the vertical direction
  • the + Z direction is the upward direction.
  • the R direction is the radial direction of the switching switch 10.
  • the + R direction is the outward direction in the radial direction (the direction away from the central axis).
  • the ⁇ direction is the circumferential direction of the central axis of the switching switch 10.
  • the + ⁇ direction is the rotation direction of the right-hand screw traveling in the + Z direction.
  • the R direction and the ⁇ direction are horizontal directions.
  • the switching switch 10 has a first mounting plate 12, a second mounting plate 13, and a support column 14.
  • the first mounting plate 12, the second mounting plate 13, and the support column 14 are made of a conductive metal material and are connected to the neutral point terminal 18.
  • the neutral point terminal 18 is connected to the tap selector 2 shown in FIG. 1 by wiring 3.
  • the first mounting plate 12 and the second mounting plate 13 are formed in a disk shape and are arranged in parallel in the Z direction.
  • the columns 14 are arranged between the first mounting plate 12 and the second mounting plate 13 and in the ⁇ Z direction of the second mounting plate 13.
  • the switching switch 10 has a power storage mechanism 15.
  • the energy storage mechanism 15 is arranged in the ⁇ Z direction of the second mounting plate 13.
  • the energy storage mechanism 15 includes a storage spring 15s.
  • the drive mechanism 5 shown in FIG. 1 executes expansion or compression (accumulation operation) of the energy storage spring 15s shown in FIG. 3 in parallel with the selection operation of the tap selector 2.
  • the energy storage mechanism 15 releases the stored energy storage spring 15s after the selection operation of the tap selector 2 is completed.
  • the energy storage mechanism 15 rotates the shaft 61 of the cam unit 60, which will be described later, by a predetermined angle by the restoring force of the energy storage spring 15s (release of the storage force). As a result, the energy storage mechanism 15 instantly performs the switching operation of the switching switch 10.
  • the switching switch 10 has a switching unit 20.
  • the switching unit 20 is arranged between the first mounting plate 12 and the second mounting plate 13 and is supported by both.
  • the switching unit 20 is formed for each phase of three-phase alternating current.
  • the three-phase switching units 20 are arranged side by side in the ⁇ direction.
  • the switching unit 20 includes the valve V described above, the first switch assembly S1, and the second switch assembly S2.
  • the valve V is the center of the switching unit 20 in the ⁇ direction and is arranged in the + R direction.
  • the first switch assembly S1 includes a first energizing switch SM1, a first valve switch SV1, and a first resistance switch SR1.
  • the second switch assembly S2 includes a second energizing switch SM2, a second valve switch SV2, and a second resistance switch SR2.
  • the first switch assembly S1 and the second switch assembly S2 are arranged so as to sandwich the valve V in the ⁇ direction.
  • the first switch assembly S1 is arranged in the ⁇ direction of the valve V
  • the second switch assembly S2 is arranged in the + ⁇ direction of the valve V.
  • the first current limiting resistor R1 and the second current limiting resistor R2 described above are arranged on the opposite side of the switching unit 20 with the first mounting plate 12 interposed therebetween.
  • the first current limiting resistor R1 and the second current limiting resistor R2 are fixed to the + Z surface of the first mounting plate 12.
  • FIG. 4 is a perspective view of the switching unit 20 as viewed from the central axis side of the switching switch 10.
  • the switching unit 20 has a unit base 21 and a valve opening / closing mechanism 22.
  • the unit base 21 is formed of an insulating material such as resin.
  • the unit base 21 has a bottom plate portion 21a and a support column portion 21b.
  • the bottom plate portion 21a is formed in an arc shape and is fixed to the + Z surface of the second mounting plate 13.
  • the strut portion 21b extends in the + Z direction from the center of the bottom plate portion 21a in the ⁇ direction.
  • the unit base 21 supports the valve V, the first switch assembly S1 and the second switch assembly S2 described above.
  • the valve V is arranged in the + R direction of the strut portion 21b.
  • FIG. 5 is a first explanatory view of the operation of the valve opening / closing mechanism 22.
  • FIG. 6 is a second explanatory view of the operation of the valve opening / closing mechanism 22.
  • 5 and 6 are RZ cross sections including the central axis of the valve V.
  • the valve opening / closing mechanism 22 controls the opening / closing of the fixed pole Va and the movable pole Vb of the valve V.
  • the valve opening / closing mechanism 22 has a lever 24 and a valve cam 65.
  • the lever 24 is formed in an L shape when viewed from the ⁇ direction.
  • the lever 24 is rotatably supported around the rotation shaft 24x.
  • the rotation shaft 24x is arranged parallel to the ⁇ direction at the L-shaped bent portion of the lever 24.
  • the lever 24 has a first arm 24a extending in the + R direction from the rotation shaft 24x, and a second arm 24b extending in the + Z direction from the rotation shaft 24x.
  • the tip of the first arm 24a in the + R direction is connected to the movable pole Vb of the valve V.
  • a roller (cam follower) 25 is attached to the tip of the second arm 24b in the + Z direction.
  • the roller 25 is rotatable around the Z direction.
  • the valve cam 65 is formed in a substantially disk shape.
  • the valve cam 65 is arranged at a position equivalent to that of the roller 25 in the Z direction.
  • the valve cam 65 is fixed to the outer circumference of the shaft 61 and can rotate in the ⁇ direction together with the shaft 61.
  • the shaft 61 and the valve cam 65 are part of the cam unit 60 shown in FIG.
  • On the outer circumference of the valve cam 65 a first outer peripheral portion 66 and a second outer peripheral portion 67 (see FIG. 6) having different positions in the R direction are formed.
  • the first outer peripheral portion 66 is arranged in the ⁇ R direction
  • the second outer peripheral portion 67 is arranged in the + R direction.
  • the first switch assembly S1 has a fixed portion 30 and movable portions 40, 50.
  • the second switch assembly S2 is formed in the same manner as the first switch assembly S1.
  • the fixing portion 30 is arranged in the + R direction of the switching unit 20 and is fixed to the bottom plate portion 21a of the unit base 21.
  • the movable portions 40 and 50 are arranged in the ⁇ R direction of the fixed portion 30.
  • the movable portions 40 and 50 are supported by the column portions 21b of the unit base 21 via the parallel links 42 and 52.
  • the movable portions 40 and 50 can move in the substantially R direction with respect to the fixed portion 30.
  • FIG. 7 is a perspective view of the fixed portion of the switch assembly as viewed from the ⁇ R direction.
  • FIG. 8 is a perspective view of the fixed portion of the switch assembly as viewed from the + R direction.
  • the fixing portion 30 has a switch base 31.
  • the first switch assembly S1 further includes the above-mentioned common terminal 32 and the first tap terminal T1.
  • the first switch assembly S1 further includes the above-mentioned energization switch terminal 35M, valve switch terminal 35V, resistance switch terminal 35R, and connection portion 38.
  • the switch base 31 is formed of an insulating material such as resin.
  • the switch base 31 is formed in a rectangular parallelepiped shape with the Z direction as the longitudinal direction.
  • the common terminal 32 extends in the Z direction.
  • the common terminal 32 is arranged in the ⁇ direction of the ⁇ R surface of the switch base 31.
  • An energization switch common terminal 32M and a valve switch common terminal 32V are formed at the + Z direction end of the common terminal 32.
  • a resistance switch common terminal 32R is formed at the end of the common terminal 32 in the ⁇ Z direction.
  • the energization switch common terminal 32M, the valve switch common terminal 32V, and the resistance switch common terminal 32R are a part of the common terminal 32 and are integrally formed with the common terminal.
  • the shape of the energization switch common terminal 32M, the valve switch common terminal 32V, and the resistance switch common terminal 32R in the RZ cross section is formed in a substantially V shape that opens in the ⁇ R direction.
  • the first tap terminal T1 is arranged on the + R surface of the switch base 31 as shown in FIG.
  • the first tap terminal T1 is connected to the common terminal 32.
  • the first tap terminal T1 is arranged in the fixed portion 30 of the first switch assembly S1, and the second tap terminal T2 is arranged in the fixed portion 30 of the second switch assembly S2.
  • the first tap terminal T1 and the second tap terminal T2 are connected to the tap selector 2 shown in FIG. 1 by wiring 3.
  • the energizing switch terminal 35M, the valve switch terminal 35V, and the resistance switch terminal 35R are arranged in the + ⁇ direction of the ⁇ R surface of the switch base 31 as shown in FIG.
  • the energizing switch terminal 35M, the valve switch terminal 35V, and the resistance switch terminal 35R are arranged side by side in the Z direction along the common terminal 32.
  • the energization switch terminal 35M is arranged side by side with the energization switch common terminal 32M in the ⁇ direction.
  • the valve switch terminal 35V is arranged side by side with the valve switch common terminal 32V in the ⁇ direction.
  • the resistance switch terminal 35R is arranged side by side with the resistance switch common terminal 32R in the ⁇ direction.
  • the shapes of the energizing switch terminal 35M, the valve switch terminal 35V, and the resistance switch terminal 35R in the RZ cross section are formed in a substantially V shape that opens in the ⁇ R direction.
  • the connecting portion 38 is arranged in the + Z direction of the + R surface of the switch base 31.
  • the first end of the connecting portion 38 is connected to the energizing switch terminal 35M.
  • the second end of the connecting portion 38 is connected to the first mounting plate 12 as shown in FIG.
  • the valve switch terminal 35V is connected to the terminal (energizing terminal) of the movable pole of the valve V by the wiring 16V.
  • the resistance switch terminal 35R is connected to the first end of the first current limiting resistor R1 by the wiring 16R.
  • the second end of the first current limiting resistor R1 is connected to the first mounting plate 12 by the wiring 17R.
  • the terminal of the fixed pole of the valve V is connected to the first mounting plate 12.
  • the first mounting plate 12 is connected to the neutral point terminal 18.
  • the neutral point terminal 18 is connected to the tap selector 2 shown in FIG. 1 by wiring 3.
  • the movable portions 40 and 50 of the first switch assembly S1 have a first movable portion 40 arranged in the + Z direction and a second movable portion 50 arranged in the ⁇ Z direction.
  • FIG. 9 is a perspective view of the first movable portion 40.
  • the first movable portion 40 includes a frame 41, a parallel link 42, a first roller (cam follower) 43, a second roller (cam follower) 44, an energizing switch conductor 45M, and a valve switch conductor 45V.
  • the frame 41 is formed of a pressed steel plate material or the like.
  • the frame 41 extends along the R direction.
  • the frame 41 has a conductor support portion 41a arranged in the + R direction, a central portion 41b arranged in the center in the R direction, and a roller support portion 41c arranged in the ⁇ R direction.
  • the conductor support portion 41a is formed in a substantially U shape that opens in the + R direction when viewed from the Z direction.
  • the central portion 41b and the roller support portion 41c are formed by a pair of plates extending in the ⁇ R direction from the end portion of the conductor support portion 41a in the ⁇ Z direction.
  • the parallel link 42 has a pair of link members.
  • the first end of the parallel link 42 is connected to the central portion 41b of the frame 41 of the first movable portion 40.
  • the second end of the parallel link 42 is connected to the strut 21b of the unit base 21 as shown in FIG.
  • the first movable portion 40 can move in the substantially R direction while maintaining a posture parallel to the R direction.
  • the energizing switch conductor 45M abuts and separates from the energizing switch common terminal 32M and the energizing switch terminal 35M at the same time.
  • the valve switch conductor 45V abuts and separates from the valve switch common terminal 32V and the valve switch terminal 35V at the same time.
  • the first roller 43 and the second roller 44 are supported by the roller support portion 41c of the frame 41.
  • the first roller 43 is arranged between the pair of plates, and the second roller 44 is arranged in the ⁇ Z direction of the pair of plates.
  • the first roller 43 and the second roller 44 are rotatable around the Z direction.
  • the energizing switch conductor 45M and the valve switch conductor 45V are formed in a columnar shape.
  • the energizing switch conductor 45M and the valve switch conductor 45V are supported by the conductor support portion 41a of the frame 41. Openings 47M and 47V are formed on the side wall of the conductor support portion 41a in the ⁇ direction.
  • the central shaft of the energizing switch conductor 45M is inserted through the opening 47M, and the central shaft of the valve switch conductor 45V is inserted through the opening 47V.
  • An energization switch spring 46M is arranged between the side wall of the conductor support portion 41a in the ⁇ R direction and the energization switch conductor 45M.
  • the energizing switch spring 46M urges the energizing switch conductor 45M in the + R direction.
  • a valve switch spring 46V is arranged between the side wall of the conductor support portion 41a in the ⁇ R direction and the valve switch conductor 45V. The valve switch spring 46V urges the valve switch conductor 45V in the + R direction.
  • the length of the opening 47V in the R direction is longer than the opening 47M.
  • the length of the valve switch spring 46V in the R direction is longer than that of the energizing switch spring 46M.
  • the valve switch conductor 45V is arranged in the + R direction from the energization switch conductor 45M.
  • the distance from the energization switch common terminal 32M and the energization switch terminal 35M to the energization switch conductor when the first energization switch SM1 is open is defined as the first distance.
  • the distance from the valve switch common terminal 32V and the valve switch terminal 35V to the valve switch conductor 45V when the first valve switch SV1 is open is defined as the second distance.
  • the conductor support portion 41a of the frame 41 of the first movable portion 40 supports the energization switch conductor 45M and the valve switch conductor 45V so that the second distance is longer than the first distance.
  • FIG. 11 is a perspective view of the cam unit 60.
  • the cam unit 60 is arranged along the central axis of the switching switch 10.
  • the switching unit 20 is arranged in the + R direction of the cam unit 60.
  • One cam unit 60 performs a switching operation of the three-phase switching unit 20.
  • the cam unit 60 includes a shaft 61, a first cam 70 arranged in the + Z direction, a valve cam 65 arranged in the center in the Z direction, and a second cam unit 80u arranged in the ⁇ Z direction.
  • the first cam 70 moves the first movable portion 40.
  • the valve cam 65 operates the valve opening / closing mechanism 22 as described above.
  • the second cam unit 80u moves the second movable portion 50.
  • FIG. 12 is a first explanatory view of the operation of the movable portions 40 and 50.
  • 13 is a second explanatory view
  • FIG. 14 is a third explanatory view
  • FIG. 15 is a fourth explanatory view
  • FIG. 16 is a fifth explanatory view. 12 to 16 are cross-sectional views of RZ passing through the switch assembly.
  • the shaft 61 is arranged along the central axis of the switching switch 10. As shown in FIG. 12, the shaft 61 is supported by the first mounting plate 12 via the bearing 62, and is supported by the second mounting plate 13 via the bearing 63.
  • the shaft 61 is rotatably supported by the first mounting plate 12 and the second mounting plate 13.
  • the shaft 61 is rotationally driven by the energy storage mechanism 15 shown in FIG.
  • the first cam 70 is fixed to the outer circumference of the shaft 61 as shown in FIG.
  • the first cam 70 can rotate in the ⁇ direction together with the shaft 61.
  • a first groove 70a is formed at the end of the outer circumference 73 of the first cam 70 in the ⁇ Z direction.
  • the first groove portion 70a is formed along the outer circumference 73 of the first cam 70 over the entire circumference of the first cam 70.
  • the first groove portion 70a opens in the + Z direction.
  • the second roller 44 of the first movable portion 40 is housed in the first groove portion 70a.
  • the second roller 44 comes into contact with the ⁇ R surface of the side wall 74 of the first groove 70a.
  • the first roller 43 of the first movable portion 40 comes into contact with the outer circumference (+ R surface) 73 of the first cam 70. As a result, the position of the first movable portion 40 in the R direction is restricted.
  • the outer peripheral 73 of the first cam 70 is formed with a first outer peripheral portion 76, a second outer peripheral portion 77, and a third outer peripheral portion 78 having different positions in the R direction.
  • the first outer peripheral portion 76 is arranged in the most ⁇ R direction
  • the third outer peripheral portion 78 is arranged in the most + R direction.
  • the second outer peripheral portion 77 is arranged between the first outer peripheral portion 76 and the third outer peripheral portion 78 in the R direction.
  • the first movable portion 40 is arranged adjacent to the + R direction of the first outer peripheral portion 76. At this time, the first movable portion 40 is arranged at the end portion in the ⁇ R direction in the movable range in the R direction.
  • the energizing switch conductor 45M is separated from the common terminal 32 and the energizing switch terminal 35M, and the first energizing switch SM1 is opened.
  • the valve switch conductor 45V is separated from the common terminal 32 and the valve switch terminal 35V, and the first valve switch SV1 is opened.
  • the first movable portion 40 is arranged adjacent to the + R direction of the third outer peripheral portion 78. At this time, the first movable portion 40 is arranged at the end portion in the + R direction in the movable range in the R direction.
  • the energizing switch conductor 45M comes into contact with the common terminal 32 and the energizing switch terminal 35M, and the first energizing switch SM1 is closed.
  • the valve switch conductor 45V comes into contact with the common terminal 32 and the valve switch terminal 35V, and the first valve switch SV1 is closed.
  • the first movable portion 40 is arranged adjacent to the + R direction of the second outer peripheral portion 77. At this time, the first movable portion 40 is arranged in the middle of the movable range in the R direction.
  • the valve switch conductor 45V is arranged in the + R direction from the energizing switch conductor 45M. Therefore, the valve switch conductor 45V comes into contact with the common terminal 32 and the valve switch terminal 35V, and the first valve switch SV1 is closed.
  • the energization switch conductor 45M is separated from the common terminal 32 and the energization switch terminal 35M, and the first energization switch SM1 opens.
  • FIG. 17 is an explanatory view of the first connection lever 140.
  • the first connecting lever 140 is made of a conductive material.
  • the first connecting lever 140 is formed in a substantially L shape when viewed from the ⁇ direction.
  • the first connection lever 140 is arranged in the ⁇ R direction of the conductor support portion 41a of the first movable portion 40.
  • the first connecting lever 140 is rotatably supported with respect to the first mounting plate 12.
  • a first connection spring 144 is arranged between the first connection lever 140 and the first mounting plate 12.
  • the first movable portion 40 moves in the ⁇ R direction, the first energizing switch SM1 and the first valve switch SV1 are opened. At this time, the conductor support portion 41a of the first movable portion 40 comes into contact with the first connection lever 140. The first movable portion 40 is electrically connected to the first mounting plate 12 via the first connecting lever 140. As a result, the first movable portion 40 has the same potential as the neutral point terminal 18, and is potentially stable.
  • FIG. 10 is a perspective view of the second movable portion 50.
  • the second movable portion 50 is formed in the same manner as the first movable portion 40.
  • the second movable portion 50 includes a frame 51, a parallel link 52, a first roller (cam follower) 53, a second roller (cam follower) 54, and a resistance switch conductor 55R.
  • the frame 51 has a conductor support portion 51a, a central portion 51b, and a roller support portion 51c.
  • the first end of the parallel link 52 is connected to the central portion 51b of the frame 51.
  • the second end of the parallel link 52 is connected to the strut 21b of the unit base 21 as shown in FIG.
  • the resistance switch conductor 55R abuts and separates from the resistance switch common terminal 32R and the resistance switch terminal 35R at the same time.
  • the resistance switch conductor 55R is formed in a columnar shape.
  • the resistance switch conductor 55R is supported by the conductor support portion 51a of the frame 51.
  • An opening 57R is formed on the side wall of the conductor support portion 51a in the ⁇ direction.
  • the central axis of the resistance switch conductor 55R is inserted through the opening 57R.
  • a resistance switch spring 56R is arranged between the side wall of the conductor support portion 51a in the ⁇ R direction and the resistance switch conductor 55R. The resistance switch spring 56R urges the resistance switch conductor 55R in the + R direction.
  • the cam unit 60 has a second cam unit 80u.
  • the second cam unit 80u moves the second movable portion 50.
  • the second cam unit 80u has a second cam 80 and a second cam rotation control mechanism 90.
  • the second cam 80 is supported by the shaft 61 via the bearing 82.
  • the second cam 80 can rotate in the ⁇ direction independently of the shaft 61.
  • a second groove 80a is formed at the end of the outer circumference 83 of the second cam 80 in the ⁇ Z direction.
  • the second groove portion 80a is formed along the outer circumference 83 of the second cam 80 over the entire circumference of the second cam 80.
  • the second groove portion 80a opens in the + Z direction.
  • the second roller 54 of the second movable portion 50 is housed in the second groove portion 80a.
  • the second roller 54 comes into contact with the ⁇ R surface of the side wall 84 of the second groove 80a.
  • the first roller 53 of the second movable portion 50 comes into contact with the outer circumference (+ R surface) 83 of the second cam 80.
  • the position of the second movable portion 50 in the R direction is restricted.
  • the outer peripheral portion 83 of the second cam 80 is formed with a first outer peripheral portion 86 and a second outer peripheral portion 87 having different positions in the R direction.
  • the first outer peripheral portion 86 is arranged in the ⁇ R direction
  • the second outer peripheral portion 87 is arranged in the + R direction.
  • the second movable portion 50 is arranged adjacent to the + R direction of the first outer peripheral portion 86. At this time, the second movable portion 50 is arranged at the end portion in the ⁇ R direction in the movable range in the R direction. As a result, the resistance switch conductor 55R is separated from the common terminal 32 and the resistance switch terminal 35R, and the first resistance switch SR1 is opened.
  • the second movable portion 50 is arranged adjacent to the + R direction of the second outer peripheral portion 87. At this time, the second movable portion 50 is arranged at the end portion in the + R direction in the movable range in the R direction. As a result, the resistance switch conductor 55R comes into contact with the common terminal 32 and the resistance switch terminal 35R, and the first resistance switch SR1 is closed.
  • FIG. 18 is an explanatory view of the second connection lever 150.
  • the second connecting lever 150 is made of a conductive material.
  • the second connecting lever 150 is formed in a substantially L shape when viewed from the ⁇ direction.
  • the second connection lever 150 is arranged in the ⁇ R direction of the conductor support portion 51a of the second movable portion 50.
  • the second connecting lever 150 is rotatably supported with respect to the second mounting plate 13.
  • a second connection spring 154 is arranged between the second connection lever 150 and the second mounting plate 13.
  • the first resistance switch SR1 opens.
  • the conductor support portion 51a of the second movable portion 50 comes into contact with the second connection lever 150.
  • the second movable portion 50 is electrically connected to the first mounting plate 12 via the second connecting lever 150.
  • the second movable portion 50 has the same potential as the neutral point terminal 18, and is potentially stable.
  • the second cam unit 80u has a second cam rotation control mechanism 90.
  • the second cam rotation control mechanism 90 is arranged in the ⁇ Z direction of the second cam 80.
  • the second cam rotation control mechanism 90 controls the rotation of the second cam 80.
  • FIG. 19 is a perspective view of the second cam rotation control mechanism 90.
  • the second cam rotation control mechanism 90 has a base 91, a pusher 95, and a stopper 130.
  • the base 91 has an annulus 92 and an arm 93.
  • the annular portion 92 is arranged on the outer circumference of the shaft 61 and is fixed to the shaft 61.
  • the arm portion 93 extends in the + R direction from the outer circumference of the annular portion 92.
  • a pair of arm portions 93a and 93b are arranged so as to sandwich the shaft 61.
  • the pair of arm portions 93a and 93b are a first arm portion 93a and a second arm portion 93b.
  • a first virtual plane (not shown) that includes the central axis of the shaft 61 and intersects both of the pair of arm portions 93a and 93b is defined.
  • a second virtual plane (not shown) that includes the central axis of the shaft 61 and is orthogonal to the first virtual plane is defined.
  • the pair of arm portions 93 are formed plane-symmetrically with the second virtual plane as a plane of symmetry.
  • the side on which the pusher 95 is arranged is called the pusher side, and the side on which the stopper 130 is arranged is called the stopper side with respect to the first virtual plane.
  • the pair of arm portions 93a and 93b extend from the annular portion 92 in the + R direction, further bend and extend toward the pusher side, and are connected to each other.
  • a base opening 91h is formed between the pair of connected arm portions 93a and 93b and the annular portion 92.
  • a base inclined portion 99 that comes into contact with the stopper 130 is formed on the stopper side of the arm portion 93.
  • the pusher 95 is arranged near the position where the arm portion 93 is bent toward the pusher side.
  • a pair of pushers 95a and 95b are arranged corresponding to the pair of arm portions 93a and 93b.
  • the pair of pushers 95a and 95b are a first pusher 95a and a second pusher 95b.
  • the pair of pushers 95a and 95b are formed plane-symmetrically with the second virtual plane as a plane of symmetry.
  • the pusher 95 is rotatably supported with respect to the arm 93.
  • the rotation shaft 95x of the pusher 95 is arranged near the center of the pusher 95 in the longitudinal direction.
  • the pusher 95 is arranged so as to cross the arm portion 93.
  • the first roller 96 is attached to the first end of the pusher 95 arranged inside the base opening 91h.
  • a second roller 97 is arranged at the second end of the pusher 95 arranged outside the base opening 91h.
  • the first roller 96 and the second roller 97 are rotatable around the Z direction.
  • a compressed pusher spring 94 is arranged between the pusher 95 and the arm 93. The pusher spring 94 comes into contact with the pusher 95 between the rotation shaft 95x of the pusher 95 and the second roller 97.
  • the pusher spring 94 urges the first roller 96 toward the annular portion 92.
  • a pusher guide 13g is arranged on the + Z surface of the second mounting plate 13 described above.
  • the pusher guide 13g is formed in an arc shape.
  • the pusher guide 13g is on the pusher side of the base 91 and is arranged in the + R direction of the pusher 95.
  • the second roller 97 of the pusher 95 can come into contact with the side surface of the pusher guide 13g in the ⁇ R direction.
  • a third virtual plane (not shown) including the central axis of the valve V of any one phase of the three-phase AC and the central axis of the shaft 61 is defined.
  • the pusher guide 13g is formed plane-symmetrically with the third virtual plane as a plane of symmetry.
  • the above-mentioned second cam 80 has a first protrusion 181.
  • the first protrusion 181 projects from the second cam 80 in the ⁇ Z direction.
  • FIG. 19 shows the tip of the first protrusion 181 in the ⁇ Z direction.
  • the first protrusion 181 is formed in an arc shape along the outer circumference of the annular portion 92 of the base portion 91.
  • the first protrusion 181 is arranged inside the base opening 91h.
  • the width of the first protrusion 181 in the ⁇ direction is smaller than the width of the base opening 91h in the ⁇ direction.
  • the first pusher 95a is arranged in the ⁇ direction of the first protrusion 181 and the second pusher 95b is arranged in the + ⁇ direction of the first protrusion 181.
  • the first roller 96 of the pusher 95 can abut on the side surface of the first protrusion 181 in the ⁇ direction.
  • the above-mentioned second cam 80 has a second protrusion 182.
  • the second protrusion 182 projects from the second cam 80 in the ⁇ Z direction.
  • FIG. 19 shows the tip of the second protrusion 182 in the ⁇ Z direction.
  • the second protrusion 182 is arranged on the stopper side of the annular portion 92 of the base portion 91.
  • the second protrusion 182 is formed in an arc shape centered on the central axis of the shaft 61.
  • the second cam 80 described above has a third protrusion 183.
  • the third protrusion 183 projects from the second protrusion 182 in the ⁇ Z direction.
  • the third protrusion 183 is formed in an arc shape centered on the central axis of the shaft 61.
  • the width of the third protrusion 183 in the ⁇ direction is smaller than that of the second protrusion 182.
  • the above-mentioned second mounting plate 13 has a mounting plate opening 13h.
  • the mounting plate opening 13h accommodates the third protrusion 183 of the second cam 80.
  • the width of the mounting plate opening 13h in the ⁇ direction is larger than that of the third protrusion 183.
  • the side surface of the third protrusion 183 in the ⁇ direction can be brought into contact with the inner surface of the mounting plate opening 13h in the ⁇ direction.
  • the stopper 130 is arranged on the stopper side of the base 91.
  • a pair of stoppers 130a and 130b are arranged so as to sandwich the second protrusion 182 in the ⁇ direction.
  • the pair of stoppers 130a and 130b are a first stopper 130a and a second stopper 130b.
  • the first stopper 130a is arranged in the + ⁇ direction of the second protrusion 182, and the second stopper 130b is arranged in the ⁇ direction of the second protrusion 182.
  • the pair of stoppers 130a and 130b are formed plane-symmetrically with the above-mentioned third virtual plane as a plane of symmetry.
  • the stopper 130 is supported by the second mounting plate 13.
  • the stopper 130 is rotatable around the rotation shaft 130x in the Z direction.
  • the rotation shaft 130x is arranged at the end of the stopper 130 on the side opposite to the second protrusion 182.
  • a first locking portion 131 and a second locking portion 132 are formed on the side surface of the stopper 130 on the side of the second protrusion 182.
  • the first locking portion 131 is arranged in the ⁇ R direction
  • the second locking portion 132 is arranged in the + R direction.
  • the first locking portion 131 and the second locking portion 132 can abut on the side surface of the second protrusion 182 in the ⁇ direction.
  • the second locking portion 132 is arranged closer to the second protrusion 182 than the first locking portion 131 in the ⁇ direction.
  • a stopper spring 133 is arranged at the end of the stopper 130 in the + R direction.
  • the stopper spring 133 urges the pair of stoppers 130a and 130b so as to approach each other in the ⁇ direction.
  • a stopper inclined portion 139 that comes into contact with the base portion 91 is formed on the side surface of the stopper 130 in the ⁇ R direction.
  • FIG. 20 is a timing chart of the switching operation of the switching switch 10. In each chart of FIG. 20, the upper side is in the closed pole (ON) state and the lower side is in the open pole (OFF) state.
  • FIG. 21 is an explanatory diagram of a change in the energized state in the switching operation from the first tap terminal T1 to the second tap terminal T2.
  • FIG. 22 is an explanatory diagram of a change in the energized state in the reverse switching operation from the second tap terminal to the first tap terminal.
  • FIG. 23 is an operation explanatory view of the first movable portion 40 at the time A.
  • FIG. 23 is a cross-sectional view perpendicular to the Z direction immediately above the first cam 70.
  • the first cam 70 is arranged in the state shown in FIG. 23.
  • the first movable portion 40 of the first switch assembly S1 is arranged adjacent to the + R direction of the third outer peripheral portion 78 of the first cam 70.
  • the first movable portion 40 of the first switch assembly S1 is arranged at the end portion in the + R direction in the movable range in the R direction.
  • the first energizing switch SM1 is closed and the first valve switch is closed.
  • the first movable portion 40 of the second switch assembly S2 is arranged adjacent to the + R direction of the first outer peripheral portion 76 of the first cam 70.
  • the first movable portion 40 of the second switch assembly S2 is arranged at the end portion in the ⁇ R direction in the movable range in the R direction.
  • the second energizing switch SM2 opens and the second valve switch SV2 opens.
  • FIG. 24 is an operation explanatory view of the valve opening / closing mechanism 22 at the time A.
  • FIG. 24 is a cross-sectional view perpendicular to the Z direction immediately above the valve cam 65.
  • the valve cam 65 is arranged in the state shown in FIG.
  • the first outer peripheral portion 66 of the valve cam 65 is separated from the roller 25 of the valve opening / closing mechanism 22 in the ⁇ R direction.
  • the valve V is closed as shown in FIG.
  • FIG. 26 is an explanatory diagram of the first operation of the second cam rotation control mechanism 90 at the time A.
  • FIG. 26 is a cross-sectional view perpendicular to the Z direction immediately above the second cam rotation control mechanism 90.
  • the base 91 is arranged in the state shown in FIG.
  • the first protrusion 181 of the second cam 80 is in contact with the side surface of the second arm portion 93b of the base portion 91 in the ⁇ direction.
  • the first roller 96 of the first pusher 95a is in contact with the side surface of the first protrusion 181 in the ⁇ direction.
  • the base inclined portion 99 of the first arm portion 93a of the base portion 91 comes into contact with the stopper inclined portion 139 of the first stopper 130a.
  • the first stopper 130a rotates in the + ⁇ direction.
  • the second locking portion 132 of the first stopper 130a disengages from the side surface of the second protrusion 182 of the second cam 80 in the + ⁇ direction in the + R direction.
  • the second cam 80 becomes rotatable in the + ⁇ direction.
  • FIG. 27 is an explanatory diagram of the second operation of the second cam rotation control mechanism 90 at the time A.
  • FIG. 27 is a cross-sectional view perpendicular to the Z direction just above the third protrusion 183 of the second cam.
  • the third protrusion 183 of the second cam 80 is arranged at the end of the mounting plate opening 13h of the second mounting plate 13 in the + ⁇ direction.
  • FIG. 25 is an operation explanatory view of the second movable portion 50 at the time A.
  • FIG. 25 is a cross-sectional view perpendicular to the Z direction immediately above the second cam 80.
  • the second cam 80 is arranged in the state shown in FIG.
  • the second movable portion 50 of the first switch assembly S1 is arranged adjacent to the second outer peripheral portion 87 of the second cam 80 in the + R direction.
  • the second movable portion 50 of the first switch assembly S1 is arranged at the end of the movable range in the R direction in the + R direction.
  • the first resistance switch SR1 is closed as shown in FIG.
  • the second movable portion 50 of the second switch assembly S2 is arranged adjacent to the + R direction of the first outer peripheral portion 86 of the second cam 80.
  • the second movable portion 50 of the second switch assembly S2 is arranged at the end portion in the ⁇ R direction in the movable range in the R direction.
  • the second resistance switch SR2 opens as shown in FIG.
  • the valve V is closed at the time point A shown in FIGS. 20 and 21.
  • the first energizing switch SM1 is closed, the first valve switch SV1 is closed, and the first resistance switch SR1 is closed.
  • the second energizing switch SM2 is open, the second valve switch SV2 is open, and the second resistance switch SR2 is open.
  • the first tap terminal T1 is energized via the first energization switch SM1. That is, the first energization switch SM1 is used for steady energization of the first tap terminal T1.
  • the first energization switch SM1 changes to the open pole.
  • the valve V is closed.
  • the first tap terminal T1 is energized via the valve V.
  • FIG. 28 is an operation explanatory view of the first movable portion 40 at the time C. From the time A to the time b and the time C, the first cam 70 rotates together with the shaft 61 in the + ⁇ direction.
  • the first movable portion 40 of the first switch assembly S1 is arranged adjacent to the + R direction of the second outer peripheral portion 77 of the first cam 70.
  • the first movable portion 40 of the first switch assembly S1 is arranged in the middle of the movable range in the R direction.
  • the first energizing switch SM1 keeps the pole open and the first valve switch keeps the pole closed.
  • the state of the second switch assembly S2 is the same as the time point A shown in FIG. 23.
  • the second energizing switch SM2 maintains the open pole
  • the second valve switch SV2 maintains the open pole.
  • FIG. 29 is an operation explanatory view of the valve opening / closing mechanism 22 at the time C.
  • the state of the valve opening / closing mechanism 22 at the time C is the same as that at the time A shown in FIG. That is, as shown in FIG. 6, the valve V maintains a closed pole.
  • FIG. 31 is a first operation explanatory view of the second cam rotation control mechanism 90 at the time C.
  • the base 91 rotates in the + ⁇ direction together with the shaft 61.
  • the first roller 96 of the first pusher 95a supported by the base 91 pushes the side surface of the first protrusion 181 of the second cam 80 in the ⁇ direction in the + ⁇ direction.
  • the second locking portion 132 of the first stopper 130a is separated from the side surface of the second protrusion 182 of the second cam 80 in the + ⁇ direction in the + R direction.
  • the rotation of the second protrusion 182 in the + ⁇ direction is not limited by the second locking portion 132.
  • FIG. 32 is a second operation explanatory view of the second cam rotation control mechanism 90 at the time C.
  • the third protrusion 183 of the second cam 80 moves to the intermediate portion in the ⁇ direction of the mounting plate opening 13h of the second mounting plate 13.
  • FIG. 30 is an operation explanatory view of the second movable portion 50 at the time C.
  • the second cam 80 rotates in the + ⁇ direction.
  • the second movable portion 50 of the first switch assembly S1 is arranged adjacent to the + R direction of the first outer peripheral portion 86 of the second cam 80.
  • the second movable portion 50 of the first switch assembly S1 is arranged at the end portion in the ⁇ R direction in the movable range in the R direction.
  • the first resistance switch SR1 changes to open pole.
  • the second movable portion 50 of the second switch assembly S2 is arranged adjacent to the second outer peripheral portion 87 of the second cam 80 in the + R direction.
  • the second movable portion 50 of the second switch assembly S2 is arranged at the end of the movable range in the R direction in the + R direction.
  • the second resistance switch SR2 changes to a closed pole.
  • the valve V is closed at the time C shown in FIGS. 20 and 21.
  • the first energizing switch SM1 is open, the first valve switch SV1 is closed, and the first resistance switch SR1 is open.
  • the second energizing switch SM2 is open, the second valve switch SV2 is open, and the second resistance switch SR2 is closed.
  • the first tap terminal T1 is energized via the valve V and the first valve switch SV1, and a circulating current flows through the second current limiting resistor R2. That is, the second current limiting resistor R2 of the tap switching destination is energized prior to the opening of the valve V (at the time of D) in the switching operation.
  • FIG. 33 is an operation explanatory view of the first movable portion 40 at the time of D.
  • the shaft 61 continues to rotate in the + ⁇ direction.
  • the state of the first switch assembly S1 is the same as the time C shown in FIG. 28.
  • the first energizing switch SM1 keeps the pole open and the first valve switch keeps the pole closed.
  • the state of the second switch assembly S2 is also the same as the time point C shown in FIG. 28.
  • the second switch assembly S2 as shown in FIG. 12, the second energizing switch SM2 maintains the open pole, and the second valve switch SV2 maintains the open pole.
  • FIG. 34 is an operation explanatory view of the valve opening / closing mechanism 22 at the time D.
  • the second outer peripheral portion 67 of the valve cam 65 pushes the roller 25 of the valve opening / closing mechanism 22 in the + R direction.
  • the valve V changes to open pole as shown in FIG.
  • FIG. 36 is an explanatory diagram of the first operation of the second cam rotation control mechanism 90 at the time D.
  • the base 91 rotates in the + ⁇ direction together with the shaft 61.
  • the second roller 97 of the first pusher 95a supported by the base 91 abuts on the side surface of the pusher guide 13g in the ⁇ R direction.
  • the first pusher 95a rotates in the ⁇ direction.
  • the first roller 96 of the first pusher 95a separates from the side surface of the first protrusion 181 of the second cam 80 in the ⁇ direction in the + R direction. As a result, the first protrusion 181 is not pushed by the first pusher 95a, and the rotation of the second cam 80 is stopped.
  • the second cam 80 rotates by a predetermined angle at the start of the switching operation of the switching switch 10.
  • the rotation angle of the second cam 80 is smaller than the rotation angle of the shaft 61 in the entire switching operation.
  • the second cam 80 is held in a state of being stopped in rotation until the end of the switching operation.
  • the second protrusion 182 of the second cam 80 approaches the first locking portion 131 of the first stopper 130a.
  • the second protrusion 182 comes into contact with the first locking portion 131, excessive rotation of the second cam 80 in the + ⁇ direction is prevented.
  • the stopper spring 133 Due to the action of the stopper spring 133, the second stopper 130b rotates in the + ⁇ direction.
  • the second locking portion 132 of the second stopper 130b comes into contact with the side surface of the second protrusion 182 in the ⁇ direction. As a result, the rotation of the second cam 80 in the ⁇ direction due to the reaction of the stop is restricted.
  • FIG. 37 is an explanatory diagram of the second operation of the second cam rotation control mechanism 90 at the time D.
  • the third protrusion 183 of the second cam 80 approaches the side surface of the mounting plate opening 13h of the second mounting plate 13 in the + ⁇ direction.
  • the third protrusion 183 comes into contact with the side surface of the mounting plate opening 13h, excessive rotation of the second cam 80 in the + ⁇ direction is prevented.
  • FIG. 35 is an operation explanatory view of the second movable portion 50 at the time D.
  • the states of the first switch assembly S1 and the second switch assembly S2 are the same as those at the time C shown in FIG.
  • the first resistance switch SR1 maintains an open pole, as shown in FIG.
  • the second resistance switch SR2 maintains a closed pole, as shown in FIG. In this state, as described above, the rotation of the second cam 80 is stopped.
  • the valve V is open at the time D shown in FIGS. 20 and 21.
  • the first energizing switch SM1 is open, the first valve switch SV1 is closed, and the first resistance switch SR1 is open.
  • the second energizing switch SM2 is open, the second valve switch SV2 is open, and the second resistance switch SR2 is closed.
  • the second tap terminal T2 is energized via the second current limiting resistor R2.
  • the first valve switch SV1 changes to the open pole.
  • the second tap terminal T2 is energized via the second current limiting resistor R2 as at the time D.
  • FIG. 38 is an operation explanatory view of the first movable portion 40 at the time of F.
  • the shaft 61 continues to rotate in the + ⁇ direction.
  • the first movable portion 40 of the first switch assembly S1 is arranged adjacent to the + R direction of the first outer peripheral portion 76 of the first cam 70.
  • the first movable portion 40 of the first switch assembly S1 is arranged at the end portion in the ⁇ R direction in the movable range in the R direction.
  • the first energizing switch SM1 maintains the open pole
  • the first valve switch maintains the open pole.
  • the first movable portion 40 of the second switch assembly S2 is arranged adjacent to the second outer peripheral portion 77 of the first cam 70 in the + R direction.
  • the first movable portion 40 of the second switch assembly S2 is arranged in the middle of the movable range in the R direction.
  • the second energizing switch SM2 maintains the open pole, and the second valve switch SV2 changes to the closed pole.
  • FIG. 39 is an operation explanatory view of the valve opening / closing mechanism 22 at the time F.
  • the state of the valve opening / closing mechanism 22 at the time F is the same as that at the time D shown in FIG. 34. That is, as shown in FIG. 6, the valve V maintains the open pole.
  • FIG. 40 is an explanatory diagram of the first operation of the second cam rotation control mechanism 90 at the time F.
  • the base 91 rotates in the + ⁇ direction together with the shaft 61.
  • the first roller 96 of the first pusher 95a supported by the base 91 moves in the + ⁇ direction along the side surface of the first protrusion 181 of the second cam 80 in the + R direction.
  • the first roller 96 of the second pusher 95b also moves in the + ⁇ direction along the side surface of the first protrusion 181 in the + R direction.
  • the side surface of the second arm portion 93b of the base portion 91 in the ⁇ direction is separated from the side surface of the first protrusion 181 in the + ⁇ direction.
  • the state of the third protrusion 183 of the second cam 80 at the time F is the same as the time D shown in FIG. 37.
  • the rotation of the second cam 80 has stopped.
  • the state of the second movable portion 50 of the first switch assembly S1 and the second switch assembly S2 at the time F is the same as the time D shown in FIG. 35.
  • the first resistance switch SR1 maintains an open pole, as shown in FIG.
  • the second resistance switch SR2 maintains a closed pole, as shown in FIG.
  • the valve V is open at the time F shown in FIGS. 20 and 21.
  • the first energizing switch SM1 is open, the first valve switch SV1 is open, and the first resistance switch SR1 is open.
  • the second energizing switch SM2 is open, the second valve switch SV2 is closed, and the second resistance switch SR2 is closed.
  • the second tap terminal T2 is energized via the second current limiting resistor R2 as in the e time point.
  • valve V changes to open pole.
  • the second tap terminal T2 is energized via the valve V and the second valve switch SV2.
  • FIG. 41 is an operation explanatory view of the first movable portion 40 at the time of H.
  • the rotation of the shaft 61 in the + ⁇ direction stops in the state shown in FIG.
  • the state of the first movable portion 40 of the first switch assembly S1 at the time H is the same as the time F shown in FIG. 38.
  • the first switch assembly S1 as shown in FIG. 15, the first energizing switch SM1 maintains the open pole, and the first valve switch maintains the open pole.
  • the first movable portion 40 of the second switch assembly S2 is arranged adjacent to the third outer peripheral portion 78 of the first cam 70 in the + R direction.
  • the first movable portion 40 of the second switch assembly S2 is arranged at the end portion in the + R direction in the movable range in the R direction.
  • the second energizing switch SM2 changes to a closed pole, and the second valve switch SV2 maintains a closed pole.
  • FIG. 42 is an operation explanatory view of the valve opening / closing mechanism 22 at the time of H.
  • the first outer peripheral portion 66 of the valve cam 65 is separated from the roller 25 of the valve opening / closing mechanism 22 in the ⁇ R direction. As a result, the valve V is closed as shown in FIG.
  • FIG. 43 is a first operation explanatory view of the second cam rotation control mechanism 90 at the time of H.
  • the rotation of the second cam 80 has stopped.
  • the rotation of the base 91 in the + ⁇ direction stops in the state shown in FIG. 43.
  • the side surface of the first arm portion 93a of the base portion 91 in the + ⁇ direction abuts on the side surface of the first protrusion 181 of the second cam 80 in the ⁇ direction.
  • the second roller 97 of the second pusher 95b separates from the side surface of the pusher guide 13g in the ⁇ R direction.
  • the second pusher 95b rotates in the ⁇ direction by the action of the pusher spring 94.
  • the first roller 96 of the second pusher 95b moves in the ⁇ R direction and comes into contact with the side surface of the first protrusion 181 of the second cam 80 in the + ⁇ direction.
  • the base inclined portion 99 of the second arm portion 93b of the base portion 91 comes into contact with the stopper inclined portion 139 of the second stopper 130b.
  • the second stopper 130b rotates in the ⁇ direction.
  • the second locking portion 132 of the second stopper 130b disengages from the side surface of the second projection 182 of the second cam 80 in the ⁇ direction in the + R direction. As a result, the second cam becomes rotatable in the ⁇ direction.
  • the state of the third protrusion 183 of the second cam 80 at the time H is the same as the time F, and is the same as the time D shown in FIG. 37.
  • the state of the second movable portion 50 of the first switch assembly S1 and the second switch assembly S2 at the time H is the same as the time F, and is the same as the time D shown in FIG. 35.
  • the first resistance switch SR1 maintains an open pole, as shown in FIG.
  • the second resistance switch SR2 maintains a closed pole, as shown in FIG.
  • the valve V is closed at the time point H shown in FIGS. 20 and 21.
  • the first energizing switch SM1 is open, the first valve switch SV1 is open, and the first resistance switch SR1 is open.
  • the second energizing switch SM2 is closed, the second valve switch SV2 is closed, and the second resistance switch SR2 is closed.
  • the second tap terminal T2 is energized via the second energization switch SM2. That is, the second energization switch SM2 is used for steady energization of the second tap terminal T2. As described above, the switching operation from the first tap terminal T1 to the second tap terminal T2 is completed.
  • FIG. 44 is an operation explanatory view of the first movable portion 40 at the time of Q.
  • the first cam 70 rotates in the ⁇ direction together with the shaft 61.
  • the state of the first movable portion 40 of the first switch assembly S1 at the time Q is the same as the state at the time H shown in FIG.
  • the first energizing switch SM1 maintains the open pole and the first valve switch maintains the open pole.
  • the first movable portion 40 of the second switch assembly S2 is arranged adjacent to the second outer peripheral portion 77 of the first cam 70 in the + R direction.
  • the first movable portion 40 of the second switch assembly S2 is arranged in the middle of the movable range in the R direction.
  • the second energizing switch SM2 changes to the open pole, and the second valve switch SV2 maintains the closed pole.
  • FIG. 45 is an operation explanatory view of the valve opening / closing mechanism 22 at the time of Q.
  • the valve cam 65 rotates in the ⁇ direction together with the shaft 61.
  • the state of the valve opening / closing mechanism 22 is the same as the time point H shown in FIG. 42. That is, as shown in FIG. 5, the valve V maintains a closed pole.
  • FIG. 47 is an operation explanatory view of the second cam rotation control mechanism 90 at the time of Q.
  • the base 91 rotates in the ⁇ direction together with the shaft 61.
  • the first roller 96 of the second pusher 95b supported by the base 91 pushes the side surface of the first protrusion 181 of the second cam 80 in the + ⁇ direction in the ⁇ direction.
  • the second locking portion 132 of the second stopper 130b is separated from the side surface of the second protrusion 182 of the second cam 80 in the ⁇ direction in the + R direction.
  • the rotation of the second protrusion 182 in the ⁇ direction is not limited by the second locking portion 132.
  • FIG. 48 is a first operation explanatory view of the second cam rotation control mechanism 90 at the time of Q.
  • the third protrusion 183 of the second cam 80 moves to the intermediate portion in the ⁇ direction of the mounting plate opening 13h of the second mounting plate 13.
  • FIG. 46 is a second operation explanatory view of the second movable portion 50 at the time of Q.
  • the second cam 80 rotates in the ⁇ direction.
  • the second movable portion 50 of the first switch assembly S1 is arranged adjacent to the second outer peripheral portion 87 of the second cam 80 in the + R direction.
  • the second movable portion 50 of the first switch assembly S1 is arranged at the end of the movable range in the R direction in the + R direction.
  • the first resistance switch SR1 changes to a closed pole.
  • the second movable portion 50 of the second switch assembly S2 is arranged adjacent to the + R direction of the first outer peripheral portion 86 of the second cam 80.
  • the second movable portion 50 of the second switch assembly S2 is arranged at the end portion in the ⁇ R direction in the movable range in the R direction.
  • the second resistance switch SR2 changes to open pole.
  • the valve V is closed at the time point Q shown in FIGS. 20 and 22.
  • the first energizing switch SM1 is open, the first valve switch SV1 is open, and the first resistance switch SR1 is closed.
  • the second energizing switch SM2 is open, the second valve switch SV2 is closed, and the second resistance switch SR2 is open.
  • the second tap terminal T2 is energized via the valve V and the second valve switch SV2, and a circulating current flows through the first current limiting resistor R1. That is, the first current limiting resistor R1 at the tap switching destination is energized prior to the opening (r time point) of the valve V in the reversing switching operation.
  • the valve V changes to open pole.
  • the first tap terminal T1 is energized via the first current limiting resistor R1 and the first resistance switch SR1.
  • the rotation of the second cam 80 is stopped. In this way, the second cam 80 rotates by a predetermined angle at the start of the reverse switching operation.
  • the rotation angle of the second cam 80 is smaller than the rotation angle of the shaft 61 in the entire reversing switching operation.
  • the second cam 80 is held in a state of being stopped in rotation until the end of the reverse switching operation.
  • the state of the switching switch 10 at the s time point shown in FIGS. 20 and 22 is the same as that at the F time point shown in FIGS. 38 to 40.
  • the second valve switch SV2 changes to open pole.
  • the first tap terminal T1 is energized via the first current limiting resistor R1 and the first resistance switch SR1 as in the r time point.
  • the first valve switch SV1 changes to a closed pole.
  • the first tap terminal T1 is energized via the first current limiting resistor R1 and the first resistance switch SR1 as in the time s.
  • the state of the switching switch 10 at the u time point shown in FIGS. 20 and 22 is the same as the state at the D time point shown in FIGS. 33 to 37.
  • the valve V changes to a closed pole.
  • the first tap terminal T1 is energized via the valve V and the first valve switch SV1.
  • the state of the switching switch 10 at the u time point shown in FIGS. 20 and 22 is the same as that at the D time point shown in FIGS. 33 to 43.
  • the valve V changes to a closed pole.
  • the first tap terminal T1 is energized via the valve V and the first valve switch SV1.
  • the state of the switching switch 10 at the time v shown in FIG. 20 is the same as that at the time A shown in FIGS. 23 to 27.
  • the first energizing switch SM1 changes to a closed pole.
  • the first tap terminal T1 is energized via the first energization switch SM1 as in the A time point shown in FIG. That is, the first energization switch SM1 is used for steady energization of the first tap terminal T1.
  • the reverse switching operation from the first tap terminal T1 to the second tap terminal T2 is completed.
  • the switching switch 10 of the load tap changer 1 of the embodiment includes the first tap terminal T1 and the second tap terminal T2, the valve V, and the first current limiting resistor R1. , The second current limiting resistor R2.
  • the first tap terminal T1 and the second tap terminal T2 are connected to the tap selector 2 of the load tap changer 1.
  • the valve V is connected to the first tap terminal T1 via the first valve switch SV1 and is connected to the second tap terminal T2 via the second valve switch SV2.
  • the first current limiting resistor R1 is connected to the first tap terminal T1 via the first resistance switch SR1 and is connected to the first tap terminal T1 in parallel with the valve V.
  • the second current limiting resistor R2 is connected to the second tap terminal T2 via the second resistance switch SR2, and is connected to the second tap terminal T2 in parallel with the valve V.
  • the first current limiting resistor R1 and the second current limiting resistor R2 are alternately energized each time the tap is switched. Even in the case of continuous switching in which shutoff is repeated at intervals of about 5 seconds, the energization interval of the current limiting resistors R1 and R2 is secured. Therefore, the heat generation of the current limiting resistors R1 and R2 is suppressed. The durability of the current limiting resistors R1 and R2 is improved, and the maintenance cycle is extended. Along with this, small and inexpensive current limiting resistors R1 and R2 can be adopted without reducing the step capacitance.
  • the temperature rise of the current limiting resistor due to continuous switching in which interruption is repeated at intervals of several seconds (for example, at intervals of 5 seconds) is suppressed to a certain standard value or less. Therefore, it is possible to increase the size of the current limiting resistor, increase the cost, or relax the limitation of the step capacity (rated current x step voltage). Since a resistance switch is set for each current limiting resistor, the switch stroke is shortened. As a result, the degree of freedom in setting the opening / closing timing is increased, and the tolerance for variations in the opening / closing timing is increased. Further, since the switching switch 10 becomes smaller, the switching operation is realized by releasing the energy storage force without using the energy storage operation of the energy storage mechanism.
  • the changeover switch 10 has a first energization switch SM1 and a second energization switch SM2.
  • the first energizing switch SM1 is connected to the first tap terminal T1 in parallel with the valve V.
  • the second energizing switch SM2 is connected to the second tap terminal T2 in parallel with the valve V.
  • the first energization switch SM1 and the second energization switch SM2 are used for steady energization. As a result, a valve terminal having a small energizing capacity can be adopted. By reducing the mass of the valve terminal, the impact force when opening and closing the valve is suppressed. Further, the wiring connection structure to the valve V is simplified.
  • the switching switch 10 includes a first switch assembly S1, a second switch assembly S2, a valve opening / closing mechanism 22, and a unit base 21.
  • the first switch assembly S1 includes a first energizing switch SM1, a first valve switch SV1 and a first resistance switch SR1.
  • the second switch assembly S2 includes a second energizing switch SM2, a second valve switch SV2, and a second resistance switch SR2.
  • the valve opening / closing mechanism 22 opens / closes the valve V.
  • the unit base 21 supports a valve V, a valve opening / closing mechanism 22, a first switch assembly S1 and a second switch assembly S2, which constitute an in-phase switching switching circuit among three-phase ACs.
  • the unit base 21 is formed of an insulating material.
  • the unit base 21 supports the first switch assembly S1 on the first side and the second switch assembly S2 on the second side with the valve V and the valve opening / closing mechanism 22 interposed therebetween.
  • the switching switch 10 is downsized.
  • the first energizing switch SM1 has a common terminal 32, an energizing switch terminal 35M, and an energizing switch conductor 45M.
  • the common terminal 32 is connected to the first tap terminal T1.
  • the energizing switch terminal 35M is connected to the neutral point terminal 18.
  • the energizing switch conductor 45M can be brought into contact with and separated from the common terminal 32 and the energizing switch terminal 35M.
  • the first valve switch SV1 has a common terminal 32, a valve switch terminal 35V, and a valve switch conductor 45V.
  • the valve switch terminal 35V is connected to the valve V.
  • the valve switch conductor 45V can be brought into contact with and separated from the common terminal 32 and the valve switch terminal 35V.
  • the first resistance switch SR1 has a common terminal 32, a resistance switch terminal 35R, and a resistance switch conductor 55R.
  • the resistance switch terminal 35R is connected to the first current limiting resistor R1.
  • the resistance switch conductor 55R can be brought into contact with and separated from the common terminal 32 and the resistance switch terminal 35R.
  • the first switch assembly S1 has a fixing portion 30 fixed to the unit base 21.
  • the fixing portion 30 has a common terminal 32, an energization switch terminal 35M arranged side by side along the common terminal 32, a valve switch terminal 35V, and a resistance switch terminal 35R.
  • Each switch is formed by abutting and separating each switch conductor from each switch terminal arranged side by side in the fixed portion 30. As a result, the first switch assembly S1 is miniaturized.
  • the first switch assembly S1 has movable parts 40 and 50.
  • the movable portions 40 and 50 are supported by the unit base 21 via the parallel links 42 and 52 and can move with respect to the fixed portion 30.
  • the movable portions 40 and 50 support the energization switch conductor 45M via the energization switch spring 46M.
  • the movable portions 40 and 50 support the valve switch conductor 45V via the valve switch spring 46V.
  • the movable portions 40 and 50 support the resistance switch conductor 55R via the resistance switch spring 56R.
  • the movable parts 40 and 50 move in parallel by the parallel links 42 and 52. Therefore, the operation of contacting and separating each switch conductor with respect to each switch terminal is stable.
  • the movable portions 40 and 50 have a first movable portion 40.
  • the first movable portion 40 supports the energizing switch conductor 45M and the valve switch conductor 45V.
  • the first movable portion 40 supports the energizing switch conductor 45M and the valve switch conductor 45V so that the first distance and the second distance are different.
  • the first distance is the distance from the common terminal 32 and the energization switch terminal 35M to the energization switch conductor 45M when the first energization switch SM1 is open.
  • the second distance is the distance from the common terminal 32 and the valve switch terminal 35V to the valve switch conductor 45V when the first valve switch SV1 is open.
  • the movable portions 40 and 50 have a second movable portion 50.
  • the second movable portion 50 supports the resistance switch conductor 55R.
  • the switching switch 10 includes a first cam 70, a second cam 80, and a second cam rotation control mechanism 90.
  • the first cam 70 moves the first movable portion 40 with respect to the fixed portion 30.
  • the second cam 80 moves the second movable portion 50 with respect to the fixed portion 30.
  • the second cam rotation control mechanism 90 controls the rotation of the second cam 80.
  • the second cam rotation control mechanism 90 rotates the second cam 80 by a predetermined angle at the start of the switching operation of the switching switch 10, and moves the second movable portion 50. After that, the second cam rotation control mechanism 90 holds the second cam 80 in the state of being stopped rotating until the end of the switching operation.
  • the second movable part 50 moves, and the resistance switch closes or opens.
  • the current limiting resistor at the tap switching destination is energized prior to the opening of the valve V in the switching operation.
  • the second cam 80 is held in a state where the rotation is stopped until the end of the switching operation. Therefore, at the start of the inverting switching operation, the second movable portion 50 moves in the opposite direction, and the resistance switch opens or closes. As a result, the current limiting resistor at the reversing switching destination is energized prior to the opening of the valve V in the reversing switching operation.
  • the switching switch 10 has a valve cam 65 and a power storage mechanism 15.
  • the valve cam 65 operates the valve opening / closing mechanism 22.
  • the energy storage mechanism 15 rotates the first cam 70 and the valve cam 65 by releasing the energy storage force, and operates the second cam rotation control mechanism 90.
  • the switching operation is performed by releasing the energy storage force, and the switching operation is not performed during the previous energy storage operation. Even if the energy storage operation is stopped in the middle, the switching switch 10 maintains the previous energized state, so that the recovery work according to the stage of the switching operation becomes unnecessary.
  • the phase switching of the preceding operation by linking the shutoff operation and the next switching initial operation (accumulation operation) after the cutoff, and the phase switching of the electric operation mechanism
  • a recovery mechanism for unsteady operation such as manually returning the tap to the original tap when the energy storage drive is stopped in the middle due to an abnormality or the like.
  • the first cam 70 and the second cam 80 are formed of an insulating material.
  • the conductor of each switch is insulated with respect to the neutral point.
  • a resistance switch is set for each current limiting resistor. This prevents a no-load short circuit between both tap terminals via the resistance switch conductor. Even if an arc occurs between the resistance switch conductor and the resistance switch terminal when the resistance switch is opened due to a transient defect such as foreign matter entering the resistance switch gap, there is no arc between the two tap terminals. Load short circuit is prevented. Therefore, the reliability of the switching switch 10 is improved.
  • the switching switch 10 has a first connection lever 140 and a second connection lever 150.
  • the first connection lever 140 connects the first movable portion 40 to the neutral point terminal 18 in a state where the first energizing switch SM1 and the first valve switch SV1 are opened.
  • the second connection lever 150 connects the second movable portion 50 to the neutral point terminal 18 in a state where the first resistance switch SR1 is opened. Since each switch has a neutral point potential in the opened state, potential instability is suppressed.
  • the load tap changer 1 includes the above-mentioned switching switch 10 and a tap selector 2.
  • the switching switch 10 described above can suppress heat generation of the current limiting resistor. Therefore, the reliability of the tap changer 1 under load is improved, and the cost is suppressed.
  • the first current limiting resistor R1 connected in parallel to the valve V and the second current limiting resistor R2 connected in parallel to the valve V. have.
  • the heat generation of the current limiting resistor can be suppressed.
  • Valve opening / closing mechanism, 30 Fixed part, 32 ... Common terminal , 35M ... energization switch terminal, 35R ... resistance switch terminal, 35V ... valve switch terminal, 40 ... first movable part (movable part), 42 ... parallel link, 45M ... energization switch conductor, 45V ... valve switch conductor, 46M ... energization Switch spring, 46V ... Valve switch spring, 50 ... 2nd moving part (moving part), 52 ... Parallel link, 55R ... Resistance switch conductor, 56R ... Resistance switch spring, 65 ... Valve cam, 70 ... 1st cam, 80 ... No. 2 cams, 90 ... 2nd cam rotation control mechanism, 140 ... 1st connection lever, 150 ... 2nd connection lever.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Multiple-Way Valves (AREA)

Abstract

Un relais de commutation d'un changeur de prise en charge selon un mode de réalisation de la présente invention comprend : une première borne de prise et une seconde borne de prise ; une soupape ; une première résistance de limitation de courant ; et une seconde résistance de limitation de courant. La première borne de prise et la seconde borne de prise sont connectées à un sélecteur de prise du changeur de prise en charge. La soupape est reliée à la première borne de prise par l'intermédiaire d'un premier commutateur de soupape, et est reliée à la seconde borne de prise par l'intermédiaire d'un second commutateur de soupape. La première résistance de limitation de courant est connectée à la première borne de prise par l'intermédiaire d'un premier commutateur de résistance en parallèle à la soupape. La seconde résistance de limitation de courant est connectée à la seconde borne de prise par l'intermédiaire du second commutateur de résistance en parallèle à la soupape.
PCT/JP2019/021568 2019-05-30 2019-05-30 Relais de commutation de changeur de prise en charge et changeur de prise en charge WO2020240781A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201980096794.7A CN113874969A (zh) 2019-05-30 2019-05-30 负载时抽头切换器的切换开闭器以及负载时抽头切换器
JP2021521696A JP7119226B2 (ja) 2019-05-30 2019-05-30 負荷時タップ切換器の切換開閉器および負荷時タップ切換器
PCT/JP2019/021568 WO2020240781A1 (fr) 2019-05-30 2019-05-30 Relais de commutation de changeur de prise en charge et changeur de prise en charge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2019/021568 WO2020240781A1 (fr) 2019-05-30 2019-05-30 Relais de commutation de changeur de prise en charge et changeur de prise en charge

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Cited By (1)

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WO2023139643A1 (fr) * 2022-01-18 2023-07-27 株式会社東芝 Commutateur pour changeur de prise sous charge, et changeur de prise sous charge associé

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JPH07220956A (ja) * 1993-12-07 1995-08-18 Fuji Electric Co Ltd 真空バルブ式負荷時タップ切換え器用切換え開閉器
JP2013528942A (ja) * 2010-05-08 2013-07-11 マシイネンフアブリーク・ラインハウゼン・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング 負荷時タップ切換装置
JP2013243194A (ja) * 2012-05-18 2013-12-05 Toshiba Corp 負荷時タップ切換装置
JP2016139701A (ja) * 2015-01-27 2016-08-04 株式会社東芝 負荷時タップ切換装置

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JP4127571B2 (ja) * 1998-03-31 2008-07-30 株式会社東芝 負荷時タップ切換器
JP2001015357A (ja) * 1999-07-02 2001-01-19 Toshiba Corp 負荷時タップ切換器
KR100814514B1 (ko) * 2006-01-27 2008-03-17 가부시끼가이샤 도시바 부하시 탭 전환 장치
JP4764318B2 (ja) * 2006-11-29 2011-08-31 株式会社東芝 負荷時タップ切換器
JP5971674B2 (ja) * 2011-09-20 2016-08-17 株式会社東芝 負荷時タップ切替装置、及びその蓄勢機構
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JPH07220956A (ja) * 1993-12-07 1995-08-18 Fuji Electric Co Ltd 真空バルブ式負荷時タップ切換え器用切換え開閉器
JP2013528942A (ja) * 2010-05-08 2013-07-11 マシイネンフアブリーク・ラインハウゼン・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング 負荷時タップ切換装置
JP2013243194A (ja) * 2012-05-18 2013-12-05 Toshiba Corp 負荷時タップ切換装置
JP2016139701A (ja) * 2015-01-27 2016-08-04 株式会社東芝 負荷時タップ切換装置

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WO2023139643A1 (fr) * 2022-01-18 2023-07-27 株式会社東芝 Commutateur pour changeur de prise sous charge, et changeur de prise sous charge associé

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