WO2023002598A1 - 真空遮断器 - Google Patents
真空遮断器 Download PDFInfo
- Publication number
- WO2023002598A1 WO2023002598A1 PCT/JP2021/027312 JP2021027312W WO2023002598A1 WO 2023002598 A1 WO2023002598 A1 WO 2023002598A1 JP 2021027312 W JP2021027312 W JP 2021027312W WO 2023002598 A1 WO2023002598 A1 WO 2023002598A1
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- WIPO (PCT)
- Prior art keywords
- vacuum
- vacuum valve
- circuit breaker
- tank
- movable
- Prior art date
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- 239000004020 conductor Substances 0.000 claims abstract description 65
- 239000003990 capacitor Substances 0.000 claims description 46
- 230000007246 mechanism Effects 0.000 claims description 46
- 230000000903 blocking effect Effects 0.000 claims 1
- 239000012212 insulator Substances 0.000 description 10
- 238000010586 diagram Methods 0.000 description 8
- 238000009413 insulation Methods 0.000 description 4
- 229910052573 porcelain Inorganic materials 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
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Classifications
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- 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
- H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
- H01H33/14—Multiple main contacts for the purpose of dividing the current through, or potential drop along, the arc
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- 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
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- 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
- H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
- H01H33/16—Impedances connected with contacts
- H01H33/166—Impedances connected with contacts the impedance being inserted only while closing the switch
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- 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
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
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- 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
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/6606—Terminal arrangements
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- 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
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/666—Operating arrangements
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- 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
- H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
- H01H33/14—Multiple main contacts for the purpose of dividing the current through, or potential drop along, the arc
- H01H2033/146—Multiple main contacts for the purpose of dividing the current through, or potential drop along, the arc using capacitors, e.g. for the voltage division over the different switches
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- 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
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/666—Operating arrangements
- H01H2033/6667—Details concerning lever type driving rod arrangements
Definitions
- the present disclosure relates to a vacuum circuit breaker having multiple vacuum valves.
- Patent Document 1 discloses a vacuum circuit breaker having a plurality of vacuum valves connected in series with each other. A plurality of vacuum valves are positioned inside the tank.
- Patent Document 1 a plurality of vacuum valves are arranged in a line on the central axis of a cylindrical tank.
- the vacuum circuit breaker is significantly increased in size in the direction of the center axis of the tank, making it difficult to realize a compact configuration.
- the present disclosure has been made in view of the above, and aims to obtain a vacuum circuit breaker capable of realizing a compact configuration.
- the vacuum circuit breaker includes a cylindrical vacuum vessel, a fixed electrode fixed inside the vacuum vessel, and a vacuum vessel from inside the vacuum vessel.
- a movable conductor protruding to the outside of the vacuum vessel and movable in the direction of the central axis of the vacuum vessel; , each having a plurality of vacuum valves connected in series with each other; and a cylindrical tank containing the plurality of vacuum valves.
- the plurality of vacuum valves has at least two vacuum valves that are adjacent in a direction that intersects the central axis of the tank.
- the vacuum circuit breaker according to the present disclosure has the effect of realizing a compact configuration.
- FIG. 1 is a diagram showing the appearance of the vacuum circuit breaker according to the first embodiment;
- FIG. 1 is a first diagram for explaining current paths when the vacuum circuit breaker according to the first embodiment performs a closing operation;
- FIG. 2 is a second diagram for explaining current paths when the vacuum circuit breaker according to the first embodiment performs a closing operation;
- FIG. 4 is a diagram for explaining a voltage dividing capacitor included in the vacuum circuit breaker according to the first embodiment;
- FIG. 1 is a diagram showing the appearance of a vacuum circuit breaker 100 according to the first embodiment.
- the vacuum circuit breaker 100 includes a cylindrical tank 10, two porcelain pipes 11 and 12 erected vertically above the tank 10, an operating device 13, and two pipes erected vertically below the tank 10. It has tubes 14,15 and two current transformers 16,17.
- the tank 10 has a cylinder of metal material and a metal flange closing the end of the cylinder. Tank 10 is connected to a reference potential point.
- the tank 10 is filled with insulating gas.
- the tank 10 is supported by a frame 18 erected on the installation surface.
- the current transformer 16 is provided on the insulator 11 .
- the current transformer 17 is provided on the insulator 12 .
- the X-axis, Y-axis and Z-axis are three axes perpendicular to each other.
- the X and Y axes are horizontal axes.
- the Z-axis is the vertical axis.
- FIG. 2 is a first top view showing the internal configuration of the tank 10 of the vacuum circuit breaker 100 according to the first embodiment.
- FIG. 3 is a first side view showing the internal configuration of the tank 10 of the vacuum circuit breaker 100 according to the first embodiment.
- FIG. 4 is a second top view showing the internal configuration of the tank 10 of the vacuum circuit breaker 100 according to the first embodiment.
- FIG. 5 is a second side view showing the internal configuration of the tank 10 of the vacuum circuit breaker 100 according to the first embodiment. 2 to 5 show some of the internal components of the tank 10 in cross section.
- the vacuum circuit breaker 100 includes a vacuum valve 20A that is a first vacuum valve, a vacuum valve 20B that is a second vacuum valve, a vacuum valve 20C that is a third vacuum valve, and a vacuum valve that is a fourth vacuum valve. and a valve 20D.
- the vacuum valve 20 shall refer to each of the four vacuum valves 20A, 20B, 20C, and 20D without distinction.
- Each vacuum valve 20 constitutes a breaking section of the vacuum circuit breaker 100 .
- Each vacuum valve 20 has a cylindrical vacuum container 21 , a fixed electrode 22 fixed inside the vacuum container 21 , and a movable electrode 23 movable inside the vacuum container 21 .
- the fixed electrode 22 and the movable electrode 23 of each vacuum valve 20 constitute a breaking point arranged inside the vacuum vessel 21 .
- the central axis N0 of the tank 10 and the central axes N1, N2, N3 and N4 of the vacuum vessels 21 are all parallel to the X-axis.
- the state in which the movable electrode 23 is electrically connected to the fixed electrode 22 in each vacuum valve 20 is the closed state, and the connection between the fixed electrode 22 and the movable electrode 23 in each vacuum valve 20 is cut off.
- This state is called an open state.
- 2 and 3 show the vacuum circuit breaker 100 in the open state.
- 4 and 5 show the vacuum circuit breaker 100 in the closed state.
- the operation of the vacuum circuit breaker 100 when making the state transition from the open state to the closed state is the closing operation
- the operation of the vacuum circuit breaker 100 when making the state transition from the closed state to the open state is the opening operation. called an action.
- the vacuum circuit breaker 100 closes an electric circuit by a closing operation and opens an electric circuit by an opening operation.
- the movable electrode 23 is referred to as the movable side with respect to the fixed electrode 22, and the side opposite to the movable side is referred to as the fixed side.
- the vacuum vessel 21 has a cylinder made of an insulating material and a metal flange that closes the end of the cylinder.
- the inside of the vacuum vessel 21 is highly vacuumed.
- the fixed conductor 24 is arranged inside the vacuum vessel 21 .
- the fixed conductor 24 is arranged at the fixed side end of the vacuum vessel 21 .
- the fixed electrode 22 is fixed to the tip of the fixed conductor 24 .
- the bellows 26 is arranged inside the vacuum vessel 21 at the movable side end of the vacuum vessel 21 .
- the movable conductor 25 penetrates the movable side end of the vacuum vessel 21 and protrudes from the inside of the vacuum vessel 21 to the outside of the vacuum vessel 21 .
- the movable electrode 23 is fixed to the tip of the movable conductor 25 inside the vacuum vessel 21 .
- the fixed electrode 22 , movable electrode 23 , fixed conductor 24 and movable conductor 25 are arranged on the center axis of the vacuum vessel 21 .
- the movable conductor 25 reciprocates in the direction of the central axis of the vacuum vessel 21 .
- the movable electrode 23 moves with the movable conductor 25 inside the vacuum vessel 21 .
- the bellows 26 expands and contracts following the movement of the movable conductor 25 .
- the movable electrode 23 contacts the fixed electrode 22 by moving to the fixed side.
- the movable electrode 23 is separated from the fixed electrode 22 by moving toward the movable side.
- the vacuum circuit breaker 100 opens and closes an electric circuit by moving the movable electrode 23 inside each vacuum valve 20 .
- Two link mechanisms 27 are arranged in the tank 10 . Also, two support insulators 30 are provided in the tank 10 . One of the two link mechanisms 27 is connected between the movable conductor 25 of the vacuum valve 20A and the movable conductor 25 of the vacuum valve 20C. The other of the two link mechanisms 27 is connected between the movable conductor 25 of the vacuum valve 20B and the movable conductor 25 of the vacuum valve 20D.
- the link mechanism 27 connected between the movable conductor 25 of the vacuum valve 20A and the movable conductor 25 of the vacuum valve 20C will be referred to as the first link mechanism, the movable conductor 25 of the vacuum valve 20B and the movable conductor 25 of the vacuum valve 20D.
- the link mechanism 27 connected between and is called a second link mechanism.
- a contact pressure spring 37 for applying contact pressure to the fixed electrode 22 and the movable electrode 23 is provided between each movable conductor 25 and the link mechanism 27 . 3 and 5, illustration of the contact pressure spring 37 is omitted.
- the first link mechanism is housed in the case 28.
- the case 28 of the first link mechanism is supported by the first support insulator which is one of the two support insulators 30 .
- the first link mechanism moves the movable conductor 25 of the vacuum valve 20A and the movable conductor 25 of the vacuum valve 20C.
- the second link mechanism is housed in the case 28.
- the case 28 of the second link mechanism is supported by the second support insulator which is the other of the two support insulators 30 .
- the second link mechanism moves the movable conductor 25 of the vacuum valve 20B and the movable conductor 25 of the vacuum valve 20D.
- the vacuum circuit breaker 100 has two operating rods 29.
- Each operating rod 29 is made of an insulating material.
- a first operating rod, one of the two operating rods 29, is arranged through the interior of the tube 14 and the interior of the first support porcelain tube.
- One end of the first operating rod is connected to the operating device 13 .
- the other end of the first operating rod is connected to the first link mechanism.
- the operating device 13 operates the movable conductor 25 of the vacuum valve 20A and the movable conductor 25 of the vacuum valve 20C via the first operating rod and the first link mechanism.
- the other of the two operating rods 29, the second operating rod is arranged through the interior of the tube 15 and the interior of the second support porcelain tube.
- One end of the second operating rod is connected to the operating device 13 .
- the other end of the second operating rod is connected to the second link mechanism.
- the operating device 13 operates the movable conductor 25 of the vacuum valve 20B and the movable conductor 25 of the vacuum valve 20D via the second operating rod and the second link mechanism.
- the vacuum circuit breaker 100 performs closing operation and opening operation by operating the movable conductor 25 of each vacuum valve 20 by the operating device 13 .
- the fixed side end of the fixed conductor 24 of the vacuum valve 20A is connected to the connection point 34 .
- a fixed side end of the fixed conductor 24 of the vacuum valve 20B is connected to the connection point 33 .
- the internal conductor 35 electrically connects the connection point 33 and the connection point 34 .
- the fixed side end of the fixed conductor 24 of the vacuum valve 20C is connected to the breaker terminal 31, which is the first terminal.
- the breaker terminal 31 is one terminal of the breakers configured by the four vacuum valves 20 .
- the vacuum valve 20C and the link mechanism 27, which is the first link mechanism, are connected between the breaker terminal 31 and the vacuum valve 20A.
- the solid-side end of the fixed conductor 24 of the vacuum valve 20D is connected to the interrupter terminal 32, which is the second terminal.
- the breaker terminal 32 is the other terminal of the breakers configured by the four vacuum valves 20 .
- the vacuum valve 20D and the link mechanism 27, which is the second link mechanism, are connected between the breaker terminal 32 and the vacuum valve 20B.
- the vacuum circuit breaker 100 has two outer conductors 36. Each outer conductor 36 protrudes from tank 10 .
- a first outer conductor, one of the two outer conductors 36, is disposed through the interior of the insulator 11 shown in FIG.
- the current transformer 16 shown in FIG. 1 detects the current flowing through the first outer conductor.
- a second outer conductor, which is the other of the two outer conductors 36, is disposed through the interior of the insulator 12 shown in FIG.
- the current transformer 17 shown in FIG. 1 detects the current flowing through the second outer conductor.
- a vertically lower end of the first outer conductor is connected to the interrupter terminal 31 .
- a vertically lower end of the second outer conductor is connected to the interrupter terminal 32 .
- the vacuum circuit breaker 100 includes two resistors 40 and 45, a fixed contact 41 and a movable contact 42 forming a first switching section, a fixed contact 46 and a movable contact 47 forming a second switching section, and two and link mechanisms 43 , 48 .
- a first resistor 40 is connected to the breaker terminal 31 .
- a second resistor 45 is connected to the breaker terminal 32 .
- Resistors 40 and 45 reduce the rush current flowing through each vacuum valve 20 .
- the first opening/closing part and the second opening/closing part are opening/closing parts for opening and closing a circuit including the resistor 40 and the resistor 45 .
- the fixed contact 41 is connected to the resistor 40.
- the movable contact 42 is connected to the link mechanism 43 .
- the link mechanism 43 is connected to the link mechanism 27, which is the first link mechanism.
- the link mechanism 43 is housed in the case 44 .
- Case 44 is connected to connection point 33 .
- the link mechanism 43 operates in conjunction with the first link mechanism, the movable contact 42 reciprocates in the direction of the central axis N0.
- the state of the first opening/closing portion is changed to a state in which the tip of the movable contact 42 is in contact with the tip of the fixed contact 41, and a state in which the tip of the movable contact 42 is in contact with the tip of the fixed contact 41. It changes to the state away from.
- the fixed contact 46 is connected to the resistor 45.
- the movable contact 47 is connected to the link mechanism 48 .
- the link mechanism 48 is connected to the link mechanism 27, which is the second link mechanism.
- the link mechanism 48 is housed in the case 49 .
- Case 49 is connected to connection point 34 .
- the link mechanism 48 operates in conjunction with the second link mechanism, the movable contact 47 reciprocates in the direction of the central axis N0.
- the state of the second opening/closing portion is changed into a state in which the tip of the movable contact 47 is in contact with the tip of the fixed contact 46, and a state in which the tip of the movable contact 47 is in contact with the tip of the fixed contact 46. It changes to the state away from.
- the vacuum circuit breaker 100 has a first voltage dividing capacitor, a second voltage dividing capacitor, and a third voltage dividing capacitor provided in parallel with each of the four vacuum valves 20 .
- the voltage dividing capacitor 52 provided in is a first voltage dividing capacitor.
- An arbitrary number of voltage dividing capacitors 51 are provided in the vacuum valve 20A.
- 3 and 5 show two of the plurality of voltage dividing capacitors 51 provided in the vacuum valve 20A.
- An arbitrary number of voltage dividing capacitors 51 are provided in the vacuum valve 20B.
- the vacuum valve 20B and the voltage dividing capacitor 51 provided in the vacuum valve 20B are arranged on the back side of the paper surface with respect to the vacuum valves 20A and 20C.
- An arbitrary number of voltage dividing capacitors 52 are provided in the vacuum valve 20C.
- 3 and 5 show two of the multiple voltage dividing capacitors 52 provided in the vacuum valve 20C.
- An arbitrary number of voltage dividing capacitors 52 are provided in the vacuum valve 20D.
- the vacuum valve 20D and the voltage dividing capacitor 52 provided in the vacuum valve 20D are arranged on the back side of the paper surface with respect to the vacuum valves 20A and 20C.
- a voltage dividing capacitor 53 which is a second voltage dividing capacitor, is provided in parallel with the fixed contact 41 and the movable contact 42, which are the first opening/closing portion, and the case 44.
- a voltage dividing capacitor 54 which is a third voltage dividing capacitor, is provided in parallel with the fixed contact 46, the movable contact 47, and the case 49, which are the second opening/closing portion.
- the vacuum circuit breaker 100 is provided with one or more voltage dividing capacitors 53 and one or more voltage dividing capacitors 54 . 3 and 5 show how one voltage dividing capacitor 53 and one voltage dividing capacitor 54 are provided.
- the four vacuum valves 20 of the vacuum circuit breaker 100 are connected in series with each other.
- the vacuum valve 20A and the vacuum valve 20B are adjacent to each other in the Y-axis direction that intersects the central axis N0 of the tank 10.
- Vacuum valve 20A and vacuum valve 20B are connected in series via internal conductor 35 .
- Vacuum valve 20A and vacuum valve 20C are adjacent to each other via link mechanism 27 in the direction of central axis N0.
- Vacuum valve 20B and vacuum valve 20D are adjacent to each other via link mechanism 27 in the direction of central axis N0.
- the central axis N1 of the vacuum valve 20A is shifted in the first direction from the central axis N0.
- the first direction is the direction of the arrow representing the Y-axis in FIGS.
- the central axis N2 of the vacuum valve 20B is shifted from the central axis N0 toward the second orientation.
- the second orientation is the opposite orientation to the first orientation. In this manner, the position of the vacuum valve 20A and the position of the vacuum valve 20B are shifted in opposite directions with respect to the central axis N0.
- the vacuum circuit breaker 100 has the vacuum valve 20A and the vacuum valve 20B adjacent to each other in the Y-axis direction. can be shortened. Therefore, the vacuum circuit breaker 100 can be reduced in size in the direction of the central axis N0, and a compact configuration can be realized.
- the fixed contact 41 and the movable contact 42 which are the first opening/closing portion, are adjacent to the vacuum valve 20B via the link mechanism 43 in the direction of the central axis N0. Also, the fixed contact 41 and the movable contact 42 are adjacent to the vacuum valve 20C in the Y-axis direction.
- the fixed contact 46 and the movable contact 47 which are the second opening/closing part, are adjacent to the vacuum valve 20A via the link mechanism 48 in the direction of the central axis N0. Also, the fixed contact 46 and the movable contact 47 are adjacent to the vacuum valve 20D in the Y-axis direction.
- a resistor 40 and a first opening/closing unit are attached to two of the breaking point of the vacuum valve 20A and the breaking point of the vacuum valve 20C.
- a resistor 45 and a second opening/closing unit are attached to two of the breaking point of the vacuum valve 20B and the breaking point of the vacuum valve 20D.
- FIG. 6 is a first diagram for explaining current paths when the vacuum circuit breaker 100 according to the first embodiment performs the closing operation.
- the vacuum circuit breaker 100 performs the closing operation, the first opening and closing sections and the second opening and closing sections are closed before the breaking point of each vacuum valve 20 is closed.
- the thick line of halftone dots shown in FIG. 6 represents the current path when the first opening and closing parts and the second opening and closing parts are closed.
- the operating device 13 operates the movable contact 42 via the operating rod 29 and link mechanisms 27 and 43 .
- the movable contact 42 contacts the fixed contact 41 before the movable electrode 23 contacts the fixed electrode 22 in the vacuum valves 20A and 20C.
- the operating device 13 operates the movable contact 47 via the operating rod 29 and link mechanisms 27 and 48 .
- the movable contact 47 contacts the fixed contact 46 before the movable electrode 23 contacts the fixed electrode 22 in the vacuum valves 20B and 20D. This causes the first opening and the second opening to close before the shutoff point of each vacuum valve 20 closes.
- resistors 40 and 45, the first opening/closing portion, and the second opening/closing portion are provided between the breaking portion terminal 31 and the breaking portion terminal 32. , and the inner conductor 35 are formed. A current flows through such a path.
- FIG. 7 is a second diagram for explaining current paths when the vacuum circuit breaker 100 according to the first embodiment performs the closing operation.
- the thick line in dot tone shown in FIG. 7 represents the current path when the break point of each vacuum valve 20 is closed after the first opening and closing parts and the second opening/closing part are closed.
- the vacuum circuit breaker 100 can reduce the rush current when the electric circuit is turned on.
- the vacuum circuit breaker 100 can reduce the load of the entire electric power system including the vacuum circuit breaker 100 by reducing the inrush current.
- the vacuum circuit breaker 100 can reduce the load on the components of the vacuum circuit breaker 100 by reducing the inrush current.
- a space in which the vacuum valve 20 is not arranged is generated on the opposite side of the vacuum valve 20C as viewed from the vacuum valve 20A.
- the fixed contact 46 and the movable contact 47 are arranged.
- a space in which the vacuum valve 20 is not arranged is generated on the opposite side of the vacuum valve 20D when viewed from the vacuum valve 20B.
- the fixed contact 41 and the movable contact 42 are arranged.
- the vacuum circuit breaker 100 can effectively utilize the space inside the tank 10 to dispose the fixed contacts 41, 46 and the movable contacts 42, 47, thereby achieving a compact configuration.
- the vacuum circuit breaker 100 is provided with one opening/closing section for the two vacuum valves 20, the number of parts can be reduced compared to the case where each vacuum valve 20 is provided with one opening/closing section. . Thereby, the vacuum circuit breaker 100 can reduce the inrush current with a simple configuration.
- Vacuum circuit breaker 100 includes, in addition to voltage dividing capacitors 51 and 52 provided in parallel with each vacuum valve 20, a voltage dividing capacitor 53 provided in parallel with fixed contact 41 and movable contact 42, fixed contact 46 and It has a voltage dividing capacitor 54 provided in parallel with the movable contact 47 .
- a voltage dividing capacitor 53 is connected between the vacuum valve 20B and the vacuum valve 20C.
- a voltage dividing capacitor 54 is connected between the vacuum valves 20A and 20D.
- FIG. 8 is a diagram for explaining the voltage dividing capacitors 51, 52, 53, and 54 included in the vacuum circuit breaker 100 according to the first embodiment.
- FIG. 8 schematically shows a current path between the interrupter terminal 31 and the interrupter terminal 32 and the capacitance in the path.
- C0 be each of the capacitance of the voltage dividing capacitor 53 and the capacitance of the voltage dividing capacitor 54 .
- C1 be the capacitance of the voltage dividing capacitor 52 provided in parallel with the vacuum valve 20C and the capacitance of the voltage dividing capacitor 52 provided in parallel with the vacuum valve 20D.
- C2 be the capacitance of the voltage dividing capacitor 51 provided in parallel with the vacuum valve 20A and the capacitance of the voltage dividing capacitor 51 provided in parallel with the vacuum valve 20B.
- Each of C3 and C4 is a stray capacitance with the ground, and is an electrostatic capacitance that does not depend on a real capacitor. For example, C0 is 400 pF, C1 is 800 pF, C2 is 960 pF, C3 is 120 pF, and C4 is 150 pF.
- the voltage applied between the breaker terminal 31 and the breaker terminal 32 is defined as 1 PU, for example, the voltage applied to the vacuum valve 20A is 0.21 PU, and the voltage applied to the vacuum valve 20B is 0.21 PU. is 0.22 PU, the voltage applied to the vacuum valve 20C is 0.35 PU, and the voltage applied to the vacuum valve 20D is 0.25 PU.
- the vacuum circuit breaker 100 includes not only the voltage dividing capacitors 51 and 52 provided in parallel with each vacuum valve 20, but also the voltage dividing capacitor 53 connected between the vacuum valves 20B and 20C, the vacuum valves 20A and 20C. 20D and a voltage dividing capacitor 54 connected between 20D.
- the vacuum circuit breaker 100 can equalize the voltage applied to each vacuum valve 20 compared to the case where the voltage dividing capacitors 53 and 54 are not provided.
- the insulation distance between the vacuum valves 20 can be shortened.
- the insulation distance is the spatial distance required for insulation between parts to which a voltage is applied. Since the insulation distance between the vacuum valves 20A and 20B that are adjacent to each other in the Y-axis direction can be shortened, the diameter of the tank 10 can be shortened.
- the vacuum circuit breaker 100 can realize a compact configuration by shortening the diameter of the tank 10 .
- the number of vacuum valves 20 provided in the vacuum circuit breaker 100 is not limited to four.
- the vacuum circuit breaker 100 may have a plurality of vacuum valves 20 and at least two vacuum valves 20 adjacent to each other in the direction intersecting the central axis N0. By having at least two vacuum valves 20 adjacent to each other in the direction intersecting the central axis N0, the vacuum circuit breaker 100 can achieve an effect of realizing a compact configuration.
- the configuration shown in the above embodiment shows an example of the content of the present disclosure.
- the configuration of the embodiment can be combined with another known technique. A part of the configuration of the embodiment can be omitted or changed without departing from the gist of the present disclosure.
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Abstract
Description
図1は、実施の形態1にかかる真空遮断器100の外観を示す図である。真空遮断器100は、筒状のタンク10と、タンク10の鉛直方向上部に立てられている2つの碍管11,12と、操作装置13と、タンク10の鉛直方向下部に立てられている2つの管14,15と、2つの変流器16,17とを有する。タンク10は、金属材料の円筒と、円筒の端部を塞ぐ金属フランジとを有する。タンク10は、基準電位点に接続されている。タンク10の内部には、絶縁ガスが封入されている。タンク10は、設置面に立てられた架台18によって支持されている。変流器16は、碍管11に設けられている。変流器17は、碍管12に設けられている。X軸、Y軸およびZ軸は、互いに垂直な3軸である。X軸とY軸とは、水平方向の軸である。Z軸は、鉛直方向の軸である。
Claims (6)
- 筒状の真空容器と、前記真空容器の内部に固定されている固定電極と、前記真空容器の内部から前記真空容器の外部へ突出し、前記真空容器の中心軸の方向に移動可能な可動導体と、前記真空容器の内部において前記可動導体とともに移動することによって前記固定電極からの乖離と前記固定電極への接触とが可能な可動電極と、を各々が有し、互いに直列に接続された複数の真空バルブと、
前記複数の真空バルブを収納する筒状のタンクと、を備え、
前記複数の真空バルブは、前記タンクの中心軸に交差する方向において隣り合う少なくとも2つの真空バルブを有することを特徴とする真空遮断器。 - 前記複数の真空バルブは、前記タンクの中心軸に交差する方向において隣り合いかつ互いに直列に接続された第1の真空バルブと第2の真空バルブとを有し、
前記第1の真空バルブが有する前記真空容器の中心軸は、前記タンクの中心軸から第1の向きの方にシフトしており、
前記第2の真空バルブが有する前記真空容器の中心軸は、前記タンクの中心軸から、前記第1の向きとは逆の第2の向きの方にシフトしていることを特徴とする請求項1に記載の真空遮断器。 - 前記タンクから突出し、前記複数の真空バルブからなる遮断部のうちの一方の端子である第1の端子に接続された第1の外部導体と、
前記タンクから突出し、前記遮断部のうちの他方の端子である第2の端子に接続された第2の外部導体と、を備え、
前記複数の真空バルブは、
前記第1の真空バルブと前記第1の端子との間に接続された第3の真空バルブと、
前記第2の真空バルブと前記第2の端子との間に接続された第4の真空バルブと、を有することを特徴とする請求項2に記載の真空遮断器。 - 前記第1の真空バルブの前記可動導体と前記第3の真空バルブの前記可動導体との間に接続され、前記第1の真空バルブの前記可動導体と前記第3の真空バルブの前記可動導体とを移動させる第1のリンク機構と、
前記第2の真空バルブの前記可動導体と前記第4の真空バルブの前記可動導体との間に接続され、前記第2の真空バルブの前記可動導体と前記第4の真空バルブの前記可動導体とを移動させる第2のリンク機構と、を備えることを特徴とする請求項3に記載の真空遮断器。 - 前記第1の端子に接続された第1の抵抗と、
前記第2の端子に接続された第2の抵抗と、
前記第1の抵抗と前記第2の抵抗とを含む回路を開閉する開閉部と、を備え、
前記開閉部は、
前記タンクの中心軸の方向において前記第2の真空バルブと隣り合い、かつ前記タンクの中心軸に交差する方向において前記第3の真空バルブと隣り合う第1の開閉部と、
前記タンクの中心軸の方向において前記第1の真空バルブと隣り合い、かつ前記タンクの中心軸に交差する方向において前記第4の真空バルブと隣り合う第2の開閉部と、を有することを特徴とする請求項3または4に記載の真空遮断器。 - 前記複数の真空バルブの各々と並列に設けられた第1の分圧コンデンサと、
前記第2の真空バルブと前記第3の真空バルブとの間に接続された第2の分圧コンデンサと、
前記第1の真空バルブと前記第4の真空バルブとの間に接続された第3の分圧コンデンサと、
を備えることを特徴とする請求項3から5のいずれか1つに記載の真空遮断器。
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EP21950948.6A EP4376041A4 (en) | 2021-07-21 | 2021-07-21 | VACUUM CIRCUIT BREAKER |
JP2021568182A JP7019115B1 (ja) | 2021-07-21 | 2021-07-21 | 真空遮断器 |
PCT/JP2021/027312 WO2023002598A1 (ja) | 2021-07-21 | 2021-07-21 | 真空遮断器 |
US18/560,235 US20240234057A1 (en) | 2021-07-21 | 2021-07-21 | Vacuum circuit breaker |
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Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS58194225A (ja) | 1982-05-10 | 1983-11-12 | 株式会社東芝 | しや断器 |
JP2001312948A (ja) * | 2000-04-28 | 2001-11-09 | Toshiba Corp | 開閉装置 |
JP2015035289A (ja) * | 2013-08-08 | 2015-02-19 | 株式会社日立製作所 | 真空スイッチギヤ用真空バルブ |
JP6156535B1 (ja) * | 2016-03-17 | 2017-07-05 | 株式会社明電舎 | 分圧コンデンサ |
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FR1395289A (fr) * | 1963-05-14 | 1965-07-21 | Ass Elect Ind | Perfectionnements apportés à l'appareillage à haute tension |
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58194225A (ja) | 1982-05-10 | 1983-11-12 | 株式会社東芝 | しや断器 |
JP2001312948A (ja) * | 2000-04-28 | 2001-11-09 | Toshiba Corp | 開閉装置 |
JP2015035289A (ja) * | 2013-08-08 | 2015-02-19 | 株式会社日立製作所 | 真空スイッチギヤ用真空バルブ |
JP6156535B1 (ja) * | 2016-03-17 | 2017-07-05 | 株式会社明電舎 | 分圧コンデンサ |
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