JP2020013698A - Gas-insulated switch gear - Google Patents

Abstract

To provide a gas-insulated switch gear which allows a reduction in the number of components.SOLUTION: A gas-insulated switch gear 100 comprises: a hermetic container 1 (a housing part) having an inner portion filled with insulating gas; a breaker 5 which is housed in the hermetic container 1 and cuts off a current; and a bus bar-side disconnector 6 which is connected, inside the hermetic container 1, to a plurality of bus bars 103 each provided for each phase and cuts off a current path for the phase. The gas-insulated switch gear 100 further comprises: a disconnector 4, housed in the hermetic container 1, which cuts off a current path provided between a power cable 2 and the breaker 5 for receiving or supplying electric power, while being connected to the breaker 5; and a single common operation unit 7 which is fitted onto an outer face 1a of the hermetic container 1 so as to operate both of the breaker 5 and the disconnector 4.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a gas insulated switchgear, and more particularly, to a gas insulated switchgear including a circuit breaker and a disconnector.

  BACKGROUND ART Conventionally, a gas insulated switchgear including a circuit breaker and a disconnector has been known (for example, see Patent Document 1).

  The gas insulated switchgear of Patent Document 1 includes a metal hermetic container in which an insulating gas is sealed. The closed container houses a disconnector on the power receiving side and a circuit breaker. The gas insulated switchgear includes a disconnector-side operation unit for operating the disconnector and a circuit breaker-side operation unit for operating a circuit breaker. The disconnector-side operation unit and the circuit breaker-side operation unit are provided separately from each other. The disconnector-side operation unit and the circuit breaker-side operation unit are attached to the closed container via different plate-like flange members. Further, each of the plate-like flange members different from each other is provided with an O-ring in order to keep the airtightness of the airtight container.

JP 2011-250543 A

  However, in the gas insulated switchgear of Patent Document 1, since the disconnector-side operation unit and the circuit breaker-side operation unit (operation unit) are provided separately from each other, the members such as the flange member and the O-ring are disconnected. It is necessary for each of the switchgear-side operation unit and the circuit breaker-side operation unit, and there is a problem that the number of parts increases.

  SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and one object of the present invention is to provide a gas insulated switchgear capable of reducing the number of parts.

  In order to achieve the above object, a gas insulated switchgear according to one aspect of the present invention includes a housing portion in which an inside is filled with an insulating gas, and a circuit breaker housed in the housing portion and interrupting a current. And a bus-side disconnector that is connected to a plurality of buses provided for each phase in the housing and disconnects a current path for each phase, and a power cable housed in the housing and used for power reception or power supply A disconnector connected to the circuit breaker and disconnecting at least one of the current paths between the circuit breaker and the busbar-side disconnector and the circuit breaker; and a circuit breaker attached to an outer surface of the housing. And a single common operating unit for operating both the disconnector and the disconnector. The gas-insulated switchgear has the same meaning as the gas-insulated switchgear.

  In the gas insulated switchgear according to one aspect of the present invention, as described above, since the single common operation unit that operates both the circuit breaker and the disconnector is provided, each of the circuit breaker and the disconnector is provided. Compared to a case where a separate operation unit is provided, the number of operation units themselves can be reduced, and the number of members required for mounting the common operation unit can be reduced. Can be reduced.

  Further, by providing a single common operation unit, the device configuration of the gas insulated switchgear can be simplified as compared with a case where an operation unit is separately provided for each of the circuit breaker and the disconnector.

  In the gas insulated switchgear according to the above aspect, preferably, the common operation unit includes an interlock unit that restricts the operation of one of the circuit breaker and the disconnector according to a state of the other. Here, when an operation unit is separately provided for each of the circuit breaker and the disconnecting switch, the control by the interlock unit is performed using the wiring drawn out from each operation unit to the outside. On the other hand, since the common operation unit includes the interlock portion, the interlock can be controlled inside the common operation unit without drawing out the wiring outside the common operation unit. Thus, the configuration for performing control by the interlock unit can be simplified. Further, since there is no need to perform wiring work outside the common operation unit, the manufacturing process of the gas insulated switchgear can be simplified.

  Here, in the case where the operation units are separately provided in each of the circuit breaker and the disconnecting switch, it is difficult to perform mechanical interlock because the operation units are provided separately from each other. Therefore, mechanical interlock can be easily performed by the common operation unit including the interlock portion.

  In the gas insulated switchgear according to the above aspect, preferably, the common operation unit switches between an interlock mode in which the circuit breaker and the disconnector are continuously operated and an individual mode in which the circuit breaker and the disconnector are separately operated. Including a switching unit. Here, when an operation unit is separately provided in each of the circuit breaker and the disconnecting switch, the control by the mode switching unit is performed using the wiring drawn out from each operation unit to the outside. On the other hand, since the common operation unit includes the mode switching unit, the mode switching can be controlled inside the common operation unit without drawing out the wiring outside the common operation unit. Thereby, the configuration for performing control by the mode switching unit can be simplified. Further, since there is no need to perform wiring work outside the common operation unit, the manufacturing process of the gas insulated switchgear can be further simplified.

  In this case, preferably, the common operation unit includes: an automatic control unit that automatically controls each of the circuit breaker and the disconnector when the common operation unit is switched to the individual mode by the mode switching unit; A handle insert into which an operating handle for manually controlling each of the vessels is inserted. According to this configuration, the automatic control unit and the handle insertion unit of each of the circuit breaker and the disconnector can be integrated into the common operation unit, so that an operation unit is separately provided for each of the circuit breaker and the disconnector. The operation of the automatic control unit and the handle insertion unit by the user can be facilitated as compared with the case where it is provided.

  In the gas insulated switchgear according to the above aspect, the common operation unit is preferably attached to the circuit breaker and the disconnector connected to each other via a single cover member. Here, when an operation unit is separately provided for each of the circuit breaker and the disconnector, a cover member corresponding to each operation unit is required. Therefore, since the common operation unit is attached to the circuit breaker and the disconnector connected to each other via the single cover member, the operation unit is separately provided for each of the circuit breaker and the disconnector. The number of cover members can be reduced as compared with the case.

  In this case, preferably, there is further provided a ground terminal for bringing the disconnector into a ground state by contacting the disconnector, and the ground terminal is provided on the cover member to which the common operation unit is attached. With this configuration, the number of components can be reduced as compared with the case where a member different from the cover member is provided to provide the ground terminal.

  In the gas insulated switchgear in which the common operation unit is attached to a circuit breaker and a disconnector connected to each other via a cover member, preferably, the circuit breaker is attached to the cover member and connected to each other. Including a support for supporting the disconnector. According to this configuration, the number of components can be reduced as compared with a case where each of the circuit breaker and the disconnector is supported by a separate support portion.

  In the gas insulated switchgear according to the above aspect, the circuit breaker and the disconnector are preferably arranged vertically along the outer surface of the housing to which the common operation unit is attached. According to this structure, the circuit breaker and the disconnector are at least one of the circuit breaker and the disconnector, compared to the case where the circuit breaker and the disconnector are arranged in a direction intersecting with the outer surface of the housing unit to which the common operation unit is attached. The distance to the outer surface of the housing can be reduced. As a result, the configuration used for operation by the common operation unit can be simplified.

  In the gas insulated switchgear according to the above aspect, preferably, the disconnector includes a first disconnector that disconnects a current path between the power cable and the circuit breaker, and a current between the bus-side disconnector and the circuit breaker. A second common disconnecting unit for disconnecting the path, wherein a single common operating unit is attached to the outer surface of the housing and operates the circuit breaker, the first disconnecting switch, and the second disconnecting switch. Is configured. According to this structure, the number of components required for mounting the operation unit is smaller than when the operation unit is separately provided in each of the circuit breaker, the first disconnector, and the second disconnector. Can be reduced.

  In addition, the number of operation units can be reduced as compared with the case where operation units are separately provided in each of the circuit breaker, the first disconnector, and the second disconnector. Can be simplified.

  According to the present invention, as described above, the number of components can be reduced.

It is sectional drawing which showed the structure of the gas insulated switchgear by 1st Embodiment. It is the front view which looked at the gas insulated switchgear by a 1st embodiment from the common operation unit side. It is a perspective view for explaining composition of a cover member of a gas insulated switchgear by a 1st and 2nd embodiment. It is a figure for explaining the link mechanism of the gas insulated switchgear by a 1st and 2nd embodiment. It is a figure showing composition of a common operation unit of a gas insulated switchgear by a 1st embodiment. FIG. 4 is a diagram showing a configuration of an operation handle according to the first and second embodiments. It is sectional drawing which showed the structure of the gas insulated switchgear by 2nd Embodiment. It is the front view which looked at the gas insulated switchgear by a 2nd embodiment from the common operation unit side. It is a figure showing the composition of the common operation unit of the gas insulated switchgear by a 2nd embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[First Embodiment]
The configuration of the gas-insulated switchgear (gas-insulated switchgear) 100 according to the first embodiment will be described with reference to FIGS.

(Configuration of gas insulated switchgear)
First, the configuration of the gas insulated switchgear 100 will be described with reference to FIG. FIG. 1 is a schematic diagram, and illustration of members unnecessary for description is omitted.

  As shown in FIG. 1, the gas insulated switchgear 100 includes an airtight container 1. The closed container 1 is made of metal. The inside of the closed container 1 is filled with an insulating gas (for example, sulfur hexafluoride (SF6)). The closed container 1 is an example of the “housing” in the claims.

  A power receiving power cable 2 is connected to the gas insulated switchgear 100. The power cable 2 is drawn into the closed container 1 from outside the closed container 1.

  The gas-insulated switchgear 100 is provided with a grounding device 3. The grounding device 3 is housed in the closed container 1. On the outer surface 1a of the closed casing 1, a grounding device operation unit 30 for operating the grounding device 3 is provided. When the grounding device 3 is closed by the grounding device operation unit 30, the gas insulated switchgear 100 is switched to the grounded state.

  The gas insulated switchgear 100 includes a disconnector 4 that disconnects a current path. The disconnector 4 is housed in the closed container 1. The disconnector 4 is configured to disconnect a current path between the power cable 2 and a circuit breaker 5 described below. Specifically, the disconnector 4 is configured to be movable in the X1 direction and the X2 direction. A conduction terminal 40 is provided on the X1 direction side of the disconnector 4. When the disconnector 4 moves in the X1 direction and comes into contact with the conductive terminal 40, a current path is formed between the power cable 2 and a circuit breaker 5 described later via the disconnector 4. The conduction terminal 40 is connected to the power cable 2 and the copper bar 101 in the closed casing 1. The disconnector 4 is an example of the “first disconnector” in the claims.

  A ground terminal 41 is provided on the X2 direction side of the disconnector 4. When the disconnector 4 moves in the X2 direction and comes into contact with the ground terminal 41, the disconnector 4 is brought into the ground state. When inspecting the circuit breaker 5 described later, it is preferable that the disconnector 4 be grounded in order to prevent a current from flowing through the circuit breaker 5. The ground terminal 41 includes an R-phase ground terminal 41a (see FIG. 2), an S-phase ground terminal 41b (see FIG. 2), and a T-phase ground terminal 41c (see FIG. 2). In FIG. 2, the operation unit 30 for the grounding device and the operation unit 62 for the bus-side disconnector described below are omitted for simplification. The R-phase ground terminal 41a, the S-phase ground terminal 41b, and the T-phase ground terminal 41c are each an example of the “ground terminal” in the claims.

  When the disconnecting switch 4 is not connected to any of the conduction terminal 40 and the grounding terminal 41, the disconnecting switch 4 is not in the grounding state, but the current path between the power cable 2 and the circuit breaker 5 described later. Has been disconnected.

  The gas insulated switchgear 100 includes a circuit breaker 5 for interrupting a current. The circuit breaker 5 is housed in the closed container 1. The circuit breaker 5 interrupts a current flowing from the disconnector 4 to a bus-side disconnector 6 described later. Specifically, the circuit breaker 5 is provided so as to cut off the electric circuit for each phase when an overcurrent occurs. The circuit breaker 5 and the disconnector 4 are connected via a copper bar 102.

  In addition, the circuit breaker 5 and the disconnecting switch 4 are integrally carried into the closed container 1 in a state where they are assembled outside the closed container 1 in advance. Thereby, the manufacture of the gas insulated switchgear 100 can be simplified as compared with the case where the circuit breaker 5 and the disconnector 4 are assembled in the sealed container 1.

  The gas insulated switchgear 100 is connected to a plurality of buses 103 provided for each phase in the closed casing 1 and includes a bus disconnector 6 for disconnecting a current path for each phase. The bus 103 includes an R-phase bus 103a, an S-phase bus 103b, and a T-phase bus 103c.

  The bus-side disconnector 6 is configured to be movable in the X1 direction and the X2 direction. A conduction terminal 60 is provided on the X1 direction side of the bus-side disconnector 6. When the bus-side disconnector 6 moves in the X1 direction and contacts the conduction terminal 60, a current path is formed between the circuit breaker 5 and the bus 103 via the bus-side disconnector 6.

  A ground terminal 61 is provided on the X2 direction side of the bus-side disconnector 6. When the bus-side disconnector 6 moves in the X2 direction and comes into contact with the ground terminal 61, the bus-side disconnector 6 is in a ground state. When inspecting the circuit breaker 5, it is preferable that the bus-side disconnector 6 be grounded in order to set the potential of the circuit breaker 5 to the ground potential.

  When the bus-side disconnector 6 is not connected to any of the conduction terminal 60 and the ground terminal 61, the bus-side disconnector 6 is not in the ground state, but the current between the bus 103 and the circuit breaker 5 is not. The route has been disconnected.

  Further, on the outer surface 1a of the sealed container 1, an operation unit 62 for the bus-side disconnector for operating (controlling the movement) of the bus-side disconnector 6 is provided.

  The first chamber 100a of the closed container 1 provided with the grounding device 3, the disconnector 4, and the circuit breaker 5, and the second chamber 100b of the closed container 1 provided with the bus-side disconnector 6 A circuit breaker 5 disposed in the first chamber 100a of the sealed container 1 by an insulating bushing 104 which is hermetically sealed so that gas does not leak between the gas chambers and has an airtight function; The bus disconnector 6 disposed in the first second chamber 100b is electrically connected.

  Here, in the first embodiment, the gas insulated switchgear 100 includes a single common operation unit 7 that operates both the circuit breaker 5 and the disconnector 4. Specifically, the common operation unit 7 has a box-like shape, and accommodates therein both a circuit breaker operation unit 71 (see FIG. 5) and a disconnector operation unit 72 (see FIG. 5) described later. ing. Further, the common operation unit 7 is attached to the outer surface 1 a of the closed container 1.

  The common operation unit 7 is attached to the circuit breaker 5 and the disconnector 4 connected to each other via a single cover member 8. The cover member 8 is attached to the outer surface 1a of the closed container 1. The cover member 8 is a substantially rectangular metal plate (for example, made of iron or aluminum). The outer peripheral edge of the cover member 8 is provided with a plurality of insertion holes 8a (see FIG. 2) into which screws (not shown) for attaching to the outer surface 1a of the closed container 1 are inserted. Although the detailed structure is not shown, the common operation unit 7 is fixed to the cover member 8 by screws (not shown).

  Further, the circuit breaker 5 includes a support portion 5a that supports the circuit breaker 5 and the disconnector 4 that are connected to each other. The support 5a is attached to the cover member 8. Specifically, the support portion 5a extends in the X direction from the circuit breaker 5 toward the cover member 8. An end (a flange portion (not shown) provided on the X2 direction side) of the support portion 5a is screwed to the cover member 8 (a surface 8c to be described later; see FIG. 3). In the present embodiment, two support portions 5a are provided, but two or more support portions 5a may be provided.

  The ground terminals 41 (the R-phase ground terminal 41a, the S-phase ground terminal 41b, and the T-phase ground terminal 41c) are provided on the cover member 8 to which the common operation unit 7 is attached. Specifically, the ground terminals 41 (the R-phase ground terminal 41a, the S-phase ground terminal 41b, and the T-phase ground terminal 41c) are provided above the common operation unit 7 (Z1 direction side). I have. Specifically, the ground terminals 41 (the R-phase ground terminal 41a, the S-phase ground terminal 41b, and the T-phase ground terminal 41c) are provided near the upper end (the end on the Z1 direction side) of the cover member 8. Have been. Note that the R-phase ground terminal 41a, the S-phase ground terminal 41b, and the T-phase ground terminal 41c are arranged side by side along the Y direction, and the R-phase ground terminals 41a, S The ground terminal for phase 41b and the ground terminal for T phase 41c are arranged in this order.

  Further, the circuit breaker 5 and the disconnector 4 are arranged vertically along the outer surface 1a of the sealed container 1 to which the common operation unit 7 is attached. Specifically, the circuit breaker 5 is disposed on the Z2 direction side of the disconnector 4. The circuit breaker 5 is provided at a position overlapping the common operation unit 7 when viewed from the X1 direction side. The disconnector 4 is provided at a position overlapping the ground terminal 41 provided on the Z1 direction side of the common operation unit 7 when viewed from the X1 direction side.

  Further, as shown in FIG. 3, the cover member 8 is provided with a through hole 8b. The link mechanism 7a (see FIG. 4) provided in the common operation unit 7 passes through the through hole 8b of the cover member 8 and the through hole 1b (see FIG. 4) provided on the outer surface 1a of the closed casing 1. , And extends to the circuit breaker 5 side. The common operation unit 7 controls the link mechanism 7a and mechanically operates the circuit breaker 5 and the disconnector 4 by the link mechanism 7a. FIG. 4 schematically illustrates the link mechanism 7a, and members that are unnecessary for description are omitted.

  A groove 8d is provided on the surface 8c of the cover member 8 on the closed container 1 side so as to surround the through hole 8b. An O-ring 8e is fitted in the groove 8d. By providing the O-ring 8e, it is possible to suppress the insulating gas in the sealed container 1 from leaking to the outside. The O-ring 8e is made of, for example, rubber.

  As shown in FIG. 5, the common operation unit 7 includes a link mechanism control unit 70 that controls the operation of the link mechanism 7a. In addition, the common operation unit 7 includes a circuit breaker operation unit 71 that operates the circuit breaker 5. In addition, the common operation unit 7 includes a disconnector operation unit 72 that operates the disconnector 4.

  Here, in the first embodiment, the common operation unit 7 switches between an interlock mode in which the circuit breaker 5 and the disconnector 4 are continuously operated and an individual mode in which the circuit breaker 5 and the disconnector 4 are separately operated. A switching unit 73 is included. Specifically, a mode changeover switch 73a (see FIG. 2) is provided on a side surface 7b (see FIG. 1) of the common operation unit 7. When the mode switch 73a is switched, the mode switching unit 73 switches between the interlock mode and the individual mode.

  Further, the common operation unit 7 includes an automatic control unit 74 (see FIG. 2) that automatically controls each of the circuit breaker 5 and the disconnecting switch 4 when the common operation unit 7 is switched to the individual mode by the mode switching unit 73. ) And a handle insertion portion 75 (see FIG. 2) into which an operation handle 105 (see FIG. 6) for manually controlling each of the circuit breaker 5 and the disconnector 4 is inserted. The operation handle 105 includes an insertion portion 105a (see FIG. 6) inserted into the handle insertion portion 75, and a handle portion 105b (see FIG. 6) gripped by the user.

  Specifically, the automatic control unit 74 includes a circuit breaker open / close button 74a (see FIG. 2) provided on the side surface 7b of the common operation unit 7, and a disconnector open / close button 74b (see FIG. 2). When the mode is switched to the individual mode, the circuit breaker 5 is automatically controlled (opened / closed) by pressing the circuit breaker open / close button 74a. More specifically, when the circuit breaker open / close button 74a is pressed, an electric signal is transmitted from the circuit breaker operation unit 71 to the link mechanism control unit 70, and the link mechanism control unit 70 causes the circuit breaker 5 to be in the open state (or The link mechanism 7a is automatically controlled so as to be in the closed state. Similarly, when the mode is switched to the individual mode, by pressing the disconnector open / close button 74b, an electrical signal is transmitted from the disconnector operation unit 72 to the link mechanism control unit 70, and the link mechanism control unit 70 The link mechanism 7a is automatically controlled so that the disconnector 4 is opened (or closed). Hereinafter, being operated by the circuit breaker operation unit 71 (disconnector operation unit 72) is controlled by the link mechanism control unit 70 that receives an electric signal from the circuit breaker operation unit 71 (disconnector operation unit 72). It is described that it is operated by the provided link mechanism 7a. The circuit breaker open / close button 74a and the disconnecting switch open / close button 74b are each an example of the “automatic control unit” in the claims.

  The handle insertion portion 75 includes a circuit breaker-side handle insertion portion 75a (see FIG. 2) and a disconnector-side handle insertion portion 75b (see FIG. 2). The user can manually operate the circuit breaker 5 with the operation handle 105 inserted into the circuit breaker-side handle insertion portion 75a. Further, the user can manually operate the disconnector 4 with the operation handle 105 inserted into the disconnector-side handle insertion portion 75b. In this case, the link mechanism 7a is mechanically controlled by the operation handle 105. The circuit breaker-side handle insertion portion 75a and the disconnector-side handle insertion portion 75b are examples of the "handle insertion portion" in the claims.

  When the common operation unit 7 is switched to the interlocking mode by the mode switching unit 73 and the circuit breaker opening / closing button 74a is pressed, the circuit breaker 5 is operated (by the circuit breaker operation unit 71). The disconnector 4 is automatically operated (even if the disconnector open / close button 74b is not pressed) (by the disconnector operation unit 72). Further, when the disconnector open / close button 74b is pressed in the interlocking mode, even if the disconnector 4 is operated (by the disconnector operating section 72), the switch is automatically turned on (even if the breaker open / close button 74a is not pressed). ), The circuit breaker 5 is operated (by the circuit breaker operation section 71). However, in the interlocking mode, if the disconnecting switch open / close button 74b is pressed (the opening operation is performed) when the circuit breaker 5 is not in the open state, the control of the interlock unit 76 described later causes the disconnection After the circuit breaker 5 is opened (by the switch operating section 71), the disconnector 4 is opened (by the disconnect switch operating section 72).

  In the first embodiment, the common operation unit 7 includes an interlock unit 76 that restricts the operation of one of the circuit breaker 5 and the disconnector 4 according to the state of the other. Specifically, when the circuit breaker 5 is not in the open state, the interlock unit 76 is configured to lock the disconnector 4 in an inoperable state. The interlock control by the interlock unit 76 is applied regardless of the interlock mode, the individual mode, the automatic control, and the manual control.

  Further, the interlock unit 76 performs the interlock control mechanically during manual control. For example, when the circuit breaker 5 is not in the open state, the interlock portion 76 may be configured to prevent the operation handle 105 from being inserted into the disconnector-side handle insertion portion 75b.

  Further, the interlock unit 76 is configured to electrically perform interlock control during automatic control. For example, the interlock unit 76 may include a relay circuit that invalidates a signal transmitted from the disconnector operation unit 72 to the link mechanism control unit 70 when the circuit breaker 5 is not in the open state.

(Effect of First Embodiment)
In the first embodiment, the following effects can be obtained.

  In the first embodiment, as described above, the gas insulated switchgear 100 is mounted on the outer surface 1a of the closed casing 1 so as to include the single common operation unit 7 that operates both the circuit breaker 5 and the disconnector 4. Is configured. This makes it possible to reduce the number of operation units themselves as compared with the case where the operation units are separately provided in each of the circuit breaker 5 and the disconnecting switch 4, and to mount the common operation unit 7. Since the number of members can be reduced, the number of parts can be reduced.

  Further, the provision of the single common operation unit 7 simplifies the device configuration of the gas insulated switchgear 100 as compared with the case where the circuit breaker 5 and the disconnector 4 are separately provided with operation units. be able to.

  In the first embodiment, as described above, the common operation unit 7 includes the interlock portion 76 that restricts the operation of one of the circuit breaker 5 and the disconnector 4 according to the state of the other. The gas-insulated switchgear 100 is configured. Here, when an operation unit is separately provided for each of the circuit breaker 5 and the disconnecting switch 4, the control by the interlock unit is performed using the wiring drawn out from each operation unit to the outside. On the other hand, since the common operation unit 7 includes the interlock section 76, the interlock can be controlled inside the common operation unit 7 without drawing out the wiring outside the common operation unit 7. Thereby, the configuration for performing the control by the interlock unit 76 can be simplified. In addition, since there is no need to perform wiring work outside the common operation unit 7, the manufacturing process of the gas insulated switchgear 100 can be simplified.

  Here, in a case where the operation units are separately provided in each of the circuit breaker 5 and the disconnector 4, since the operation units are provided separately from each other, it has been difficult to perform the mechanical interlock. Therefore, since the common operation unit 7 includes the interlock portion 76, mechanical interlock can be easily performed.

  Further, in the first embodiment, as described above, the common operation unit 7 operates the interlock mode in which the circuit breaker 5 and the disconnector 4 are continuously operated, and the individual mode in which the circuit breaker 5 and the disconnector 4 are separately operated. The gas insulated switchgear 100 is configured to include the mode switching unit 73 that switches between the modes. Here, when an operation unit is separately provided in each of the circuit breaker 5 and the disconnecting switch 4, the control by the mode switching unit is performed using the wiring drawn out from each operation unit to the outside. On the other hand, since the common operation unit 7 includes the mode switching unit 73, it is possible to control the mode switching inside the common operation unit 7 without drawing out the wiring outside the common operation unit 7. Thereby, the configuration for performing the control by the mode switching unit 73 can be simplified. Further, since there is no need to perform wiring work outside the common operation unit 7, the manufacturing process of the gas insulated switchgear 100 can be further simplified.

  In the first embodiment, as described above, when the common operation unit 7 is switched to the individual mode by the mode switching unit 73, each of the circuit breaker 5 and the disconnector 4 is automatically activated. The gas insulated switchgear 100 is configured so as to include an automatic control unit 74 for controlling the air conditioner and a handle insertion portion 75 into which an operation handle 105 for manually controlling each of the circuit breaker 5 and the disconnector 4 is inserted. As a result, the automatic control section 74 and the handle insertion section 75 of each of the circuit breaker 4 and the disconnector 5 can be integrated into the common operation unit 7, so that each of the circuit breaker 5 and the disconnector 4 is separately provided. The operation of the automatic control unit 74 and the handle insertion unit 75 by the user can be facilitated as compared with the case where the operation unit is provided.

  Further, in the first embodiment, as described above, the gas insulated switchgear is provided so that the common operation unit 7 is attached to the circuit breaker 5 and the disconnector 4 connected to each other via the single cover member 8. Make up 100. Here, when an operation unit is separately provided for each of the circuit breaker 5 and the disconnecting switch 4, a cover member corresponding to each operation unit is required. Therefore, since the common operation unit 7 is attached to the circuit breaker 5 and the disconnector 4 connected to each other via the single cover member 8, each of the circuit breaker 5 and the disconnector 4 is separately operated. The number of cover members 8 can be reduced as compared with the case where a unit is provided.

  In the first embodiment, as described above, the gas insulated switchgear 100 is configured such that the ground terminal 41 is provided on the cover member 8 to which the common operation unit 7 is attached. Accordingly, the number of components can be reduced as compared with the case where a member different from the cover member 8 is provided to provide the ground terminal 41.

  Further, in the first embodiment, as described above, the gas-insulated switch is mounted such that the circuit breaker 5 includes the support portion 5a supporting the circuit breaker 5 and the disconnector 4 attached to the cover member 8 and connected to each other. The gear 100 is configured. Thereby, the number of components can be further reduced as compared with the case where each of the circuit breaker 5 and the disconnector 4 is supported by a separate support portion.

  Further, in the first embodiment, as described above, the gas breaker 5 and the disconnector 4 are arranged so as to be vertically arranged along the outer surface 1a of the sealed container 1 to which the common operation unit 7 is attached. The insulation switchgear 100 is configured. Thereby, compared with the case where circuit breaker 5 and disconnecting switch 4 are arranged side by side in the direction intersecting outer surface 1a of sealed container 1 to which common operation unit 7 is attached, at least circuit breaker 5 and disconnecting switch 4 are arranged. The distance between one side and the outer surface 1a of the closed container 1 can be reduced. As a result, the configuration used for the operation by the common operation unit 7 can be simplified.

[Second embodiment]
Next, a configuration of the gas insulated switchgear 200 according to the second embodiment will be described with reference to FIGS. The gas insulated switchgear 200 of the second embodiment has a configuration in which the disconnector 4 is provided only between the power cable 2 and the circuit breaker 5, in addition to the configuration of the first embodiment. A disconnector 9 is also provided between the switch 5 and the switch 5. The same components as those in the first embodiment are denoted by the same reference numerals as those in the first embodiment, and are not described.

(Configuration of gas insulated switchgear)
First, the configuration of the gas insulated switchgear 200 will be described with reference to FIG. FIG. 7 is a schematic diagram, and illustration of members unnecessary for description is omitted.

  As shown in FIG. 7, the gas insulated switchgear 200 includes a disconnector 9 that disconnects a current path between the bus-side disconnector 6 and the circuit breaker 5. The disconnector 9 is housed in the closed container 1. The disconnector 9 is configured to disconnect the current path between the bus-side disconnector 6 and the circuit breaker 5. Specifically, the disconnector 9 is configured to be movable in the X1 direction and the X2 direction. On the X1 direction side of the disconnector 9, a conduction terminal 90 is provided. When the disconnector 9 moves in the X1 direction and comes into contact with the conduction terminal 90, a current path is formed between the bus-side disconnector 6 and the circuit breaker 5 via the disconnector 9. Further, the circuit breaker 5 and the disconnector 9 are connected via a copper bar 106. The disconnecting switch 9 is an example of the “second disconnecting switch” in the claims.

  The circuit breaker 5, the disconnecting switch 4, and the disconnecting switch 9 are integrally carried into the closed container 1 in a state where they are assembled outside the closed container 1 in advance. Thus, the production of the gas insulated switchgear 200 can be simplified as compared with the case where the circuit breaker 5, the disconnector 4, and the disconnector 9 are assembled in the closed container 1.

  A ground terminal 91 is provided on the X2 direction side of the disconnector 9. When the disconnecting switch 9 moves in the X2 direction and comes into contact with the ground terminal 91, the disconnecting switch 9 is brought into the ground state. Inspection of the circuit breaker 5 is preferably performed with the disconnector 4 and the disconnector 9 grounded in order to set the potential of the circuit breaker 5 to the ground potential. The ground terminal 91 includes an R-phase ground terminal 91a (see FIG. 8), an S-phase ground terminal 91b (see FIG. 8), and a T-phase ground terminal 91c (see FIG. 8). In FIG. 8, the grounding device operation unit 30 and the busbar side disconnector operation unit 62 are not shown for simplicity. The R-phase ground terminal 91a, the S-phase ground terminal 91b, and the T-phase ground terminal 91c are each an example of the “ground terminal” in the claims.

  When the disconnector 9 is not connected to any of the conduction terminal 90 and the ground terminal 91, the disconnector 9 is not in the ground state, but the current path between the bus-side disconnector 6 and the circuit breaker 5 is not. Has been disconnected.

  Here, in the second embodiment, the gas insulated switchgear 200 is attached to the outer surface 1a of the closed casing 1 and includes a single common operation unit 17 that operates the circuit breaker 5, the disconnector 4, and the disconnector 9. Prepare. Specifically, the common operation unit 17 has a box-like shape, and internally includes a circuit breaker operation unit 71 (see FIG. 9), a disconnector operation unit 72 (see FIG. 9), and a disconnector 9 A disconnecting switch operating section 171 (see FIG. 9) for operating the switch is accommodated.

  The ground terminals 91 (the R-phase ground terminal 91a, the S-phase ground terminal 91b, and the T-phase ground terminal 91c) are provided on the cover member 18 to which the common operation unit 17 is attached. Specifically, the ground terminals 91 (the R-phase ground terminal 91a, the S-phase ground terminal 91b, and the T-phase ground terminal 91c) are provided below the common operation unit 17 (Z2 direction side). I have. Specifically, the ground terminals 91 (the R-phase ground terminal 91a, the S-phase ground terminal 91b, and the T-phase ground terminal 91c) are provided near the lower end (the end on the Z2 direction side) of the cover member 18. Have been. Note that the R-phase ground terminal 91a, the S-phase ground terminal 91b, and the T-phase ground terminal 91c are arranged side by side along the Y direction, and from the Y1 direction side, the R-phase ground terminal 91a, S The ground terminal for phase 91b and the ground terminal for T phase 91c are arranged in this order.

  Further, the circuit breaker 5, the disconnector 4, and the disconnector 9 are arranged vertically along the outer surface 1a of the sealed container 1 to which the common operation unit 17 is attached. Specifically, the circuit breaker 5 is disposed on the Z1 direction side of the disconnector 9. Further, the disconnector 9 is provided at a position overlapping with the ground terminal 91 provided on the Z2 direction side of the common operation unit 17 when viewed from the X1 direction side.

  As shown in FIG. 9, the common operation unit 17 includes a link mechanism control section 170 for controlling the link mechanism 7a (see FIG. 4).

  Further, in the second embodiment, the common operation unit 17 includes an interlock mode in which the circuit breaker 5, the disconnector 4, and the disconnector 9 are continuously operated, and the interlock mode in which the circuit breaker 5, the disconnector 4, and the disconnector 9 are operated. And a mode switching unit 173 for switching between the individual mode and the individual mode in which the operation is performed separately. Specifically, a mode changeover switch 173a (see FIG. 8) is provided on a side surface 17b (see FIG. 1) of the common operation unit 17. When the mode switch 173a is switched, the mode switching unit 173 switches between the interlock mode and the individual mode.

  When the common operation unit 17 is switched to the individual mode by the mode switching unit 173, the common operation unit 17 automatically controls each of the circuit breaker 5, the disconnecting switch 4, and the disconnecting switch 9. 174 (see FIG. 8), and a handle insertion portion 175 (see FIG. 8) into which an operating handle 105 (see FIG. 6) for manually controlling each of the circuit breaker 5, the disconnector 4, and the disconnector 9 is inserted. And

  Specifically, the automatic control unit 174 includes a circuit breaker open / close button 74a (see FIG. 8) provided on a side surface 17b (see FIG. 8) of the common operation unit 17, and a disconnector open / close button 174b. When the switching to the individual mode is performed, when the disconnector open / close button 174b is pressed, the disconnector 4 and the disconnector 9 are opened (or closed) by the disconnector operation unit 72 and the disconnector operation unit 171. Is controlled automatically. Note that the disconnector open / close button 174b is an example of the “automatic control unit” in the claims.

  The handle insertion portion 175 includes a circuit breaker-side handle insertion portion 75a, a disconnector-side handle insertion portion 75b, and a disconnector-side handle insertion portion 75c. The user can manually operate the disconnector 9 with the operation handle 105 (see FIG. 6) inserted into the disconnector-side handle insertion portion 75c. The disconnector-side handle insertion portion 75c is an example of the "handle insertion portion" in the claims.

  When the common operation unit 17 is switched to the interlocking mode by the mode switching unit 173 and the circuit breaker open / close button 74a is pressed, the circuit breaker 5 is automatically operated (the disconnector open / close button). Even if the 174b is not pressed), each of the disconnector 4 and the disconnector 9 is operated. When the disconnector open / close button 174b is pressed in the interlocking mode, automatically after each of the disconnector 4 and the disconnector 9 is operated (even if the breaker open / close button 74a is not pressed). The circuit breaker 5 is operated. However, in the interlocking mode, when the disconnecting switch opening / closing button 174b is pressed (the opening operation is performed) while the circuit breaker 5 is not in the open state, the circuit breaker is controlled by the interlock unit 176 described later. After the switch 5 is opened, each of the disconnectors 4 and 9 is opened.

  The common operation unit 17 includes an interlock unit 176. The interlock unit 176 is configured to lock the disconnectors 4 and 9 in an inoperable state when the circuit breaker 5 is not in the open state.

  The other configuration of the second embodiment is the same as that of the first embodiment.

(Effect of Second Embodiment)
In the second embodiment, the following effects can be obtained.

  In the second embodiment, as described above, the single common operation unit 17 is attached to the outer surface 1a of the closed casing 1 and operates the circuit breaker 5, the disconnecting switch 4, and the disconnecting switch 9 as described above. Next, the gas insulated switchgear 200 is configured. Thereby, the number of parts of the members required for mounting the operation unit can be reduced as compared with the case where the operation unit is separately provided in each of the circuit breaker 5, the disconnector 4, and the disconnector 9. it can.

  In addition, the number of operation units can be reduced as compared with the case where operation units are separately provided in each of the circuit breaker 5, the disconnector 4, and the disconnector 9, so that the gas insulated switchgear 200 can be reduced. Can be simplified.

  The other effects of the second embodiment are the same as those of the first embodiment.

[Modification]
It should be understood that the embodiments disclosed this time are illustrative in all aspects and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description of the embodiments, and includes all equivalents (modifications) within the scope and meaning equivalent to the claims.

  For example, in the second embodiment, the disconnector 4 (first disconnector) between the power cable 2 and the circuit breaker 5, the circuit breaker 5, and the disconnection between the bus-side disconnector 6 and the circuit breaker 5 Although the example in which the single common operation unit 17 for operating the switch 9 (second disconnector) is provided, the present invention is not limited to this. For example, a single common operation unit that commonly operates only the circuit breaker 5 and the disconnector 9 (second disconnector) may be provided.

  Also, in the first and second embodiments, the example in which the power cable 2 is provided for receiving power has been described, but the present invention is not limited to this. For example, the power cable 2 may be provided for supplying power to an external device.

  Further, in the first and second embodiments, the example in which the disconnector 4 (first disconnector) and the circuit breaker 5 are arranged vertically is shown, but the present invention is not limited to this. . For example, the disconnector 4 (first disconnector) and the circuit breaker 5 may be arranged side by side in the horizontal direction. Further, the disconnector 9 (second disconnector) and the circuit breaker 5 may be arranged side by side in the horizontal direction.

  Further, in the second embodiment, the example in which the disconnector 4 (first disconnector) and the disconnector 9 (second disconnector) are operated in conjunction with each other has been described, but the present invention is not limited to this. For example, the disconnector 4 (first disconnector) and the disconnector 9 (second disconnector) may be configured to be individually operated.

1 sealed container (housing part)
1a Outer surface 2 Power cable 4 Disconnector (first disconnector)
Reference Signs List 5 breaker 5a support part 6 busbar side disconnector 7, 17 common operation unit 8, 18 cover member 9 disconnector (second disconnector)
41 Ground terminal 41a, 91a R-phase ground terminal (ground terminal)
41b, 91b S-phase ground terminal (ground terminal)
41c, 91c T-phase ground terminal (ground terminal)
73,173 Mode switching unit 74,174 Automatic control unit 74a Circuit breaker open / close button (automatic control unit)
74b, 174b Disconnector open / close button (automatic control unit)
75, 175 Handle insertion part 75a Circuit breaker side handle insertion part (handle insertion part)
75b Disconnector side handle insertion part (handle insertion part)
75c Disconnector side handle insertion part (handle insertion part)
76, 176 Interlock part 100, 200 Gas insulated switchgear 103, 103a, 103b, 103c Bus 105 Operating handle

Claims (9)

A housing part whose inside is filled with an insulating gas,
A circuit breaker that is housed in the housing and cuts off current;
A bus-side disconnector that is connected to a plurality of buses provided for each phase in the housing and disconnects a current path for each phase,
Disconnecting and disconnecting at least one of the current paths between the power cable and the circuit breaker that are housed in the housing and used for power reception or power supply, and between the bus-side disconnector and the circuit breaker; Disconnector connected to the device,
A single common operating unit mounted on the outer surface of the housing and operating both the circuit breaker and the disconnector.   The gas insulated switchgear according to claim 1, wherein the common operation unit includes an interlock unit that restricts operation of one of the circuit breaker and the disconnector according to a state of the other.   The common operation unit includes a mode switching unit that switches between an interlock mode in which the circuit breaker and the disconnector are operated continuously and an individual mode in which the circuit breaker and the disconnector are operated separately. 3. The gas insulated switchgear according to 2.   The common operation unit, when the common operation unit is switched to the individual mode by the mode switching unit, an automatic control unit that automatically controls each of the circuit breaker and the disconnector, the circuit breaker and The gas-insulated switchgear according to claim 3, further comprising a handle insertion portion into which an operation handle for manually controlling each of the disconnectors is inserted.   The gas insulated switchgear according to any one of claims 1 to 4, wherein the common operation unit is attached to the circuit breaker and the disconnector connected to each other via a single cover member. Further comprising a ground terminal for bringing the disconnector into a ground state by contacting the disconnector,
The gas insulated switchgear according to claim 5, wherein the ground terminal is provided on the cover member to which the common operation unit is attached.   The gas insulated switchgear according to claim 5, wherein the circuit breaker includes a supporting portion attached to the cover member and supporting the circuit breaker and the disconnector connected to each other.   The gas insulation according to any one of claims 1 to 7, wherein the circuit breaker and the disconnector are vertically arranged along an outer surface of the housing to which the common operation unit is attached. Switchgear. A first disconnector that disconnects a current path between the power cable and the circuit breaker, and a second disconnector that disconnects a current path between the bus-side disconnector and the circuit breaker. Including
The single common operation unit is attached to an outer surface of the housing, and is configured to operate the circuit breaker, the first disconnector, and the second disconnector. Item 9. The gas insulated switchgear according to any one of Items 1 to 8.

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