JPH0733528Y2 - Gas insulated switchgear - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a gas-insulated switchgear installed in a substation or the like.

[Prior Art] A gas-insulated switchgear is configured by accommodating switch circuit components such as a circuit breaker, a disconnector, and a grounding switch in an outer shell container filled with SF ₆ gas.

When supporting the outer shell container on the controller box in this type of device, a mechanism case is installed for each switchgear to accommodate the operating mechanism of the switchgear and switchgear such as a grounding switch. It is connected to the lower surface of the outer container in the container box. Then, an operating device for operating each switching device is attached to a side surface of each mechanism case, and the operating device is connected to each switching device via an operation mechanism in the mechanism case. Further, a terminal board is provided in the operating device box, and the terminal board and each operating device are connected by a control line.

FIG. 4 shows the structure of the main part of a conventional device of this type. In FIG. 4, reference numeral 1 denotes an outer shell container supported on an operating device box 2, and a disconnection is made in this outer shell container. A switchgear such as a switch and a grounding switch is stored together with the circuit breaker.

A mechanism case 3 is connected to the lower surface of the outer shell container 1, and an operating mechanism (for example, a crank mechanism) necessary for transmitting an operating force to one switchgear housed in the outer shell container 1 is connected to the lower surface of the outer shell container 1. ) Is stored. An operation device 4 is attached to a side surface of the mechanism case 3, and an output shaft of the operation device is connected to a predetermined switching device via an operation mechanism in the mechanism case 3.

In the operation device box 2, a lamp for displaying the state of each switchgear, instrumentation, or a terminal board 5 to which a switch for operation is attached is housed, and each operation device 4 is controlled through a duct 6. It is connected to the terminal board 5 via a wire 7.

Although only one mechanism case 3 is shown in FIG. 4,
Actually, a plurality of mechanism cases are provided corresponding to the plurality of switchgear devices housed in the outer shell container 1, and these mechanism cases are dispersedly arranged in the operator box and attached to each mechanism case. The operating device is connected to the terminal board 5 via a control line.

[Problems to be Solved by the Invention] In the conventional gas-insulated switchgear, since a mechanism case is provided for each switchgear and an operating device is attached to the mechanism case, the number of mechanism cases increases and the structure is complicated. However, there was a problem that the cost became high.

In addition, since multiple operating devices are distributed, it is necessary to provide a duct for housing the control lines and guide each control line through the duct to the terminal board, which inevitably increases the number of wiring work steps. It was

Since many control lines are provided in the narrower duct, there is a problem that it takes a long time to replace the control lines.

An object of the present invention is to provide a gas-insulated switchgear that simplifies the structure by reducing the number of mechanism cases, and centralizes the operation devices of a plurality of switchgear devices to simplify the routing of control lines. It is in.

[Means for Solving the Problems] The present invention accommodates a plurality of switching devices including a disconnector and a grounding switch in an outer shell container supported on an operating device box, and also in the operating device box. In the gas-insulated switchgear in which an operating device for operating a plurality of switching devices and a terminal board are housed, and each operating device and the terminal board are connected by a control line, the following configuration is adopted. And

In the present invention, a mechanism case common to a plurality of switchgear devices is provided in the operator box, the mechanism case is connected to the lower surface of the outer shell container, and the plurality of switchgear devices are operated in the mechanism case. The mechanism is stored together.

The operating devices that respectively operate the plurality of switches are centrally arranged on one side surface of the common mechanism case, and each operating device is connected to the corresponding switch via the corresponding operating mechanism in the mechanical case.

Further, the terminal board is arranged on the other side surface side of the mechanism case, and the control line derived from each operation device is guided to the terminal board side through the lower part of the mechanism case.

[Operation] When one mechanism case is commonly provided for a plurality of switchgear devices as described above, an operating device is provided as compared with a conventional one in which a mechanism case is separately provided for each of a plurality of switchgear devices. The structure inside the box can be simplified. Further, the number of mechanism cases is reduced, so that the cost can be reduced.

Further, if the operation device boxes are centrally arranged and the control lines derived from the operation devices are guided to the terminal board side through the lower part of the mechanism case, no duct is required, so that the cost can be reduced. Further, since each control line can be freely passed under the mechanism case and guided to the terminal board side, it is possible to easily carry out the control line routing work and the control line replacement work.

Embodiments Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

1 to 3 show an embodiment of the present invention,
In FIGS. 1 and 2, 10 is a box-shaped operator box, and 11 is a box-shaped (rectangular parallelepiped) outer shell container supported on the operator box 10.

A bushing terminal 12 for drawing an overhead wire is attached to an upper part of one end of the outer shell container 11, and a gas oil classification bushing device 13 for connecting a transformer (not shown) is attached to a side face of the other end. Further, on the side surface of the outer shell container 11, there is provided a connecting portion 14 for connecting an unillustrated power transformer for a power supply and demand meter (MOF).

Inside the outer shell container 11, a circuit breaker CB, a disconnecting switch DS1 connecting between one end of the circuit breaker CB and the bushing terminal 12, and a charging section connected to the bushing terminal 12 are connected via a simple disconnecting section 15. Lightning arrester LA, cable head CHd connected to one end of breaker CB via disconnector DS1, the other end of breaker CB and M
A disconnector DS2 provided between the OF connection portion 14, a disconnector DS3 provided between the MOF connection portion 14 and the gas oil classification bushing device 13, and a ground that grounds both ends of the circuit breaker CB. The switches ES1 and ES2 for the switch and the switch ES3 for grounding which grounds the transformer-side terminal of the disconnector DS3 are housed.

To the cable head CHd is connected a cable C that has been erected in the controller box 10 from an underground cable pit, and a current transformer CT is attached to the cable C.

The circuit breaker CB is a gas circuit breaker in which a circuit breaker is housed in a container in which SF ₆ gas is sealed, and at the lower end of the container of this circuit breaker is a crankcase 16 housing a crank mechanism for transmitting operating force to the circuit breaker. It is connected. Crankcase 16 is a controller box
The operating shaft of the circuit breaker, which is arranged in the crankcase and is led out from the crankcase, is connected to the circuit breaker operating device 17, which is also arranged in the operating device box 10.

A mechanism case 20 common to the disconnecting switches DS1 to DS3 and the grounding switches ES1 to ES3 is connected to the bottom of the outer shell container 11. An operating mechanism (for example, a crank mechanism) for transmitting an operating force to each of the disconnecting switches DS1 to DS3 and the grounding switches ES1 to ES3 is collectively housed in the mechanism case.

On one side 20a of the mechanism case 20, operating devices 21 to 23 for operating the disconnecting switches DS1 to DS3, respectively, and a grounding switch ES1
Or ES3 for operating the ES3 respectively, and these operating devices are connected to the corresponding switchgear (disconnector or earthing switch) through the corresponding operating mechanism in the mechanism case. There is.

A terminal board 27 is attached to the other side surface 20b opposite to the side surface 20a of the mechanism case 20, and the control lines 30, 30, ... Derived from the operating devices 21, 22, .. It is connected to the terminal board 27 with the bottom portion of the container box 10 freely attached.

As shown in FIG. 3, control lines 30 and 3 are provided below the mechanism case 20.
A plate-shaped cover 31 that covers 0, ... Is arranged, and this cover is fixed to the lower frame of the operation device box 10.

SF ₆ gas is sealed in the outer shell container 11 and the mechanism case 20 at a predetermined pressure.

The types of equipment stored in the outer shell container 11 and the arrangement of the equipment are not limited to the above examples, and may be appropriately changed based on the configuration of the substation.

[Effects of the Invention] As described above, according to the present invention, since one mechanical case is commonly provided for a plurality of switchgear, a mechanical case is separately provided for each of a plurality of switchgear. The structure inside the operating device box can be simplified as compared with the conventional one. Further, the number of mechanism cases is reduced, so that the cost can be reduced.

Further, the operation device boxes are centrally arranged and the control lines derived from the operation devices are guided to the terminal board side through the lower part of the mechanism case, so that the duct is not required and the cost can be reduced.

Further, since each control line can be freely passed under the mechanism case and guided to the terminal board side, it is possible to easily carry out the control line routing work and the control line replacement work.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an embodiment of the present invention, and FIG. 2 is a side view showing the inside of a controller box of the embodiment with the side wall removed.
FIG. 3 is a perspective view showing the connection between the operating device and the terminal board of the same embodiment, and FIG. 4 is a side view showing the inside of the operating device box of the conventional gas insulated switchgear with the side wall removed. Is. 10 ... Controller box, 11 ... Outer shell container, 12 ... Bushing terminal, 13
… Gas oil classification bushing device, DS1 to DS3… Disconnector, ES1
~ ES3: Grounding switch, CB: Circuit breaker, 20 ... Mechanical container, 21
~ 26 ... operation device.

Claims (1)

[Scope of utility model registration request] 1. A plurality of switching devices including a disconnecting switch and a grounding switch are housed in an outer shell container which is supported on an operating device box and in which an insulating gas is sealed, and the operating device box is provided with the switching device. Is a gas-insulated switchgear in which an operating device for operating each of the plurality of switching devices and a terminal board are housed, and each operating device and the terminal board are connected by a control line, in the operating device box. A mechanism case common to the plurality of opening / closing devices is provided, the mechanism case is connected to the lower surface of the outer shell container, and the operation mechanisms of the plurality of opening / closing devices are collectively stored in the mechanism case, An operating device for operating each of the plurality of switches is centrally arranged on one side surface of the mechanism case, each operating device is connected to a corresponding switch via a corresponding operating mechanism in the mechanism case, and the terminal board Is the other side of the mechanical case Arranged, the control line derived from the controllers is gas-insulated switchgear apparatus characterized by being guided to the terminal board through below the mechanism case.