JPH11318010A - Gas-insulated switchgear mof unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the size of an MOF unit which is used for connecting an MOF to a gas-insulated switchgear. SOLUTION: An MOF connection vessel 50 connected to an MOF main part 10 and 1st and 2nd bus-bar vessels 56 and 60 which are connected to 1st and 2nd pipe stand parts 53a and 53b of the MOF connection vessel respectively through 1st and 2nd insulating spacers 55 and 59 are provided. Disconnectors DSa and DSb by which the MOF is separated from the bus-bars, grounding switches ESa and ESb and an MOF bypass disconnector DSc are housed in the MOF connection vessel 50. Bus-bar conductors of which parts of power supply side bus-bars BUS1 and BUS2 are composed are housed in the 1st and 2nd bus-bar chambers 56 and 60 respectively.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an MOF unit connected to a gas insulated switchgear constituting a switching circuit of a substation facility.

[0002]

2. Description of the Related Art In a power receiving and transforming facility, a gas insulated switchgear is used to form a switching circuit for connecting a line and a transformer, and a transaction power between a power company and a customer is used. MOF (Metering outfit for GIS)
) Is used.

FIG. 9 shows a first line L1 and a second line L2.
Power supply to the two transformer banks TS1 and TS2 via the MOF via the MOF.
1 is a single-line diagram showing a typical configuration example of a gas insulated switchgear having a line receiving-two transformer bank-1 MOF configuration.

In FIG. 9, power receiving units provided for lines L1 and L2, respectively, U11 and U12, each of which includes a cable head CHd, a voltage detection device VD, a lightning arrester LA, and a line side disconnector DS1 , A line-side grounding switch ES1, a gas circuit breaker GCB, and circuit breaker inspection grounding switches ES21 and ES2 operated in conjunction with each other.
22, a bus disconnector DS2, a current transformer CT for detecting a current flowing through the line and a current flowing through the grounding switch ES1, and a power bus BUS1.

[0005] Among the equipment constituting the power receiving units U11 and U12, the equipment other than the bus conductor and the bus disconnector DS2 constituting a part of the power supply bus BUS1 is a single vessel or a plurality of vessels connected. The bus-side disconnector DS2 and the bus BUS
1 is contained in a power receiving unit bus container 2 connected to the main container 1.

In FIG. 9, U21 and U22 are transformer connection units provided for the transformer banks TS1 and TS2, respectively. Each transformer connection unit constitutes a part of a bus BUS2 on the transformer side. A bus conductor, a bus-side disconnector DS3, a grounding switch ES3, and a gas oil section bushing BS for transformer connection are provided. Among the equipment constituting the transformer connection unit, the equipment other than the bus conductor constituting the bus BUS2 and the bus disconnector DS3 is housed in the main container 3 for the transformer connection unit, and the bus disconnector DS
The bus conductor constituting the bus 3 and the bus BUS2 is housed in a bus container 4 for the transformer connection unit connected to the main container 3.

[0007] The MOF is also called a voltage transformer for an instrument or a transformer for a power supply / demand instrument, and measures the transaction power between a power company and a consumer. And a transformer.

FIG. 10 shows an example of the configuration of the MOF main body 10. This MOF main body is V-connected and U, V,
Instrumentation transformers PTuv and PTvw for detecting W3 phase voltage
And a current transformer C for detecting current of both phases (U-phase and W-phase)
Tu and CTw are housed in the container 5, and have a structure in which U-phase to W-phase terminals 6 u, 6 v, 6 w are provided on the upper part of the container 5. Both phases of the MOF body 10 (U phase and W phase)
The terminals 6u and 6w of the current transformer are connected to the input terminals of both phases of the V-connected instrument transformer and one end of the primary coil of the current transformer, and the primary winding of the current transformer. It consists of a pair of terminals with the load-side terminal L connected to the other end. Also M
The middle-phase (V-phase) terminal 6v of the OF main body 10 is a single terminal serving both as a power supply side terminal and a load side terminal, and this terminal 6v is connected to the V-connected instrument transformers PTuv and PTuv.
Tvw is connected to the middle terminal.

The terminals 6u and 6w at both ends of the MOF main body are connected to power receiving units U11 and U12 and a transformer connecting unit U21 through reciprocating conductors 7u and 7w for connection to the MOF having forward conductors 7au and 7aw and return conductors 7bu and 7bw. U22, the middle terminal 6v is a single conductor 7v for MOF connection
Through the power receiving units U11 and U12 and the transformer connecting units U21 and U22.

That is, the power supply side terminals K of the terminals 6u, 6w at both ends are connected to the bus conductors at both ends of the bus BUS1 connecting the power receiving units U11, U12 through the outward conductors 7au, 7aw of the reciprocating conductors 7u, 7w. , Terminals 6u, 6w at both ends
Is connected to the return conductors 7bu, 7bu of the reciprocating conductors 7u, 7w.
The bus BUS2 connecting between the transformer connection units U21 and U22 is connected to the bus conductors at both ends of the phase through 7 bw. The terminal 6v, which also serves as the power supply side terminal and load side terminal of the MOF, is connected to the buses BUS1 and BUS2 through a single conductor 7v.
Connected to the medium-phase bus conductor.

The MOF body 10 needs to be periodically disconnected from the gas insulated switchgear in order to perform the calibration. A gas insulated switchgear provided in a general consumer has the configuration shown in FIG. 9 in most cases. However, when the configuration shown in FIG. In addition, since it is necessary to stop energizing both the transformer banks TS1 and TS2, it is necessary to stop all the loads.

In order to solve such a problem, a gas insulated switchgear having the structure shown in FIG. 11 is sometimes used. In the gas insulated switchgear shown in FIG. 11, one end is connected to the power supply side terminal of the MOF main body 10, and the other end is connected to the power supply side bus BUS1.
One end is connected to the load side terminal of the MOF main body 10 and the other end is connected to the load side bus BUS2.
A power-side grounding switch ESa that grounds one end of the power-side disconnector DSa, a load-side grounding switch ESb that grounds one end of the load-side disconnector DSb, and one end connected to the power-side bus BUS1. Connected to the load-side bus BUS2
F bypass disconnector DSc is provided.
The main body 10, the power-side disconnecting switch DSa, the power-side grounding switch ESa, the load-side disconnecting switch DSb, and the load-side grounding switch E
Sb constitutes the MOF unit Um.

In the equipment shown in FIG. 11, in a normal operation state, the disconnectors DSa and DSb before and after the MOF are in an ON state, and the grounding switches ESa and ESb and the MOF bypass disconnector DSc are in an open state. In this state,
The power received by the power receiving units U11 and U12 from the lines L1 and L2 is equal to the power of the bus BUS1, the disconnector DSa, and the MOF.
, Disconnector DSb, transformer-side bus BUS2, and transformer connecting units U21 and U22 to transformers TS1 and TS2.

When disconnecting the MOF, the MOF bypass disconnector DSc is inserted to bypass the MOF.
The disconnectors DSa and DSb before and after the MOF are opened, the earthing switches ESa and ESb are closed, and M
The OF is separated. The connection of the MOF is performed in the reverse procedure.

The layout of the MOF unit Um used in the conventional gas insulated switchgear having the configuration shown in FIG. 11 is, for example, as shown in FIGS. 14 is a plan view showing the entire configuration of the MOF unit, FIG. 15 is a cross-sectional view taken along line AA of FIG. 14, and FIG.
14 is a sectional view taken along line BB of FIG. 14, and FIG. 17 is a sectional view taken along line CC of FIG.

In FIGS. 14 to 17, reference numeral 11 denotes a MOF.
A first MOF connection container connected to the container 5 of the main body 10,
Reference numeral 12 denotes a second M connected to the first MOF connection container 11.
It is an OF connection container. The second MOF connection container 12 is formed of a cylindrical container whose axis is oriented in the vertical direction, and has nozzle portions 12a and 12b projecting in opposite directions on the side surfaces thereof. Is an insulating spacer S
One end of the bus branch container 14 is connected to the end of the bus branching container 14 via the expansion joint tube 13. Further, the bus branch container 16 is connected to the nozzle base 12b via the insulating spacer S2 and the adapter container 15.
Are connected at one end. As shown in FIG. 14, one ends of the earthing switch containers 19 and 20 are connected to the other ends of the bus branching containers 14 and 16 via insulating spacers S3 and S4. The ends are connected to the bus disconnector container 23 via insulating spacers S5 and S6, respectively.
And 24 are connected to nozzle portions 23a and 24a provided on the side surface on one end side. As shown in FIG. 17, the other end of the bus disconnector container 23 and the other end of the bus disconnector container 24 are connected to expansion joint pipes 25 and 26 and insulating spacers S7 and S8, respectively. And one end of the bus disconnector container 23 and one end of the bus disconnector container 24 are respectively connected to the insulating spacer S9.
And S10 are connected to the bus containers 30 and 31. Of these containers, the bus branch container 15, the ground switchgear container 19, and the bus disconnector container 23 are supported by the gantry 32, and the bus branch container container 16, the ground switchgear container 20, and the bus disconnector container 24 are supported by the gantry 33. Supported. The MOF bypass disconnector container 27 is supported by a gantry 34.

While penetrating the insulating spacer S11 provided between the MOF connection containers 11 and 12, both-end bushings 36u and 36w having a reciprocating conductor and a medium-phase bushing 36v having a single conductor are provided. Attached, MO
The power supply side terminals K of the terminals 6u and 6w at both ends of the F body are:
The outward conductors of the bushings 36u and 36w and the connection conductors 37u and 37w (3
7u is not shown. ) And through conductors embedded in the insulating spacer S1 are connected to one ends of conductors 38u and 38w (38u not shown) arranged in the bus branch container 14. The middle phase terminal 6v of the MOF main body is connected to the middle phase conductor 38v in the bus branching vessel 14 through the conductor of the bushing 36v, the conductor 37v arranged in the MOF connection container 12, and the through conductor embedded in the insulating spacer S1. Connected to one end. Conductor 38 in bus branching vessel 14
The other ends of u to 38w are disposed in the bus disconnector container 23 through the through conductor embedded in the insulating spacer S3, the conductor provided in the grounding switch case 19, and the through conductor embedded in the insulating spacer S5. U, V, W The three-phase disconnector DS is connected to one end of the three-phase power disconnector DSa.
The other end of a connects between the power receiving units U11 and U12 through three-phase through conductors embedded in the insulating spacer S9 and bus conductors 39u to 39w (39u not shown) housed in the bus container 30. Power supply bus BUS1 (Fig. 1
1). The three-phase power supply side grounding switch ESa shown in FIG.

The other end of the three-phase power disconnector DSa is
For the MOF bypass contained in the MOF bypass disconnector container 27 through the connection conductors 40u to 40w (40u not shown) contained in the bus disconnector container 23 and the through conductor embedded in the insulating spacer S7. Disconnector DS
c is connected to one end.

The load-side terminals L of the terminals 6u and 6w at both ends of the MOF main body are connected to the return conductors of the bushings 36u and 36w and the connection conductor 37 disposed in the MOF connection container 12.
One end of conductors 41u and 41w (41u is not shown) arranged in the bus branching vessel 16 through u 'and 37w' (37u 'is not shown) and the through conductor embedded in the insulating spacer S2. It is connected. The center conductor of the bushing 36v to which the middle phase terminal 6v of the MOF main body is connected is a conductor 37v arranged in the MOF connection container 12.
It is connected to one end of the medium-phase conductor 41v in the bus branching vessel 16 through the through-hole conductor embedded in the insulating spacer S2. Conductors 41u to 41 in bus branching container 16
The other end of w is a through conductor embedded in the insulating spacer S4 and conductors 42u to 42w provided in the grounding switch case 20.
It is connected to one end of a U-, V-, and W-phase load-side disconnector DSb arranged in the bus disconnector container 24 through the through-hole conductor embedded in the insulating spacer S6. The other end of the three-phase load-side disconnector DSb is transformed through the three-phase through conductor embedded in the insulating spacer S10 and the bus conductors 43u to 43w (43u not shown) housed in the bus container 31. Is connected to a transformer-side bus BUS2 connecting between the transformer connection units U21 and U22. The three-phase load-side grounding switch E shown in FIG.
Sb is stored.

The other end of the three-phase load-side disconnector DSb is
For the MOF bypass contained in the MOF bypass disconnector container 27 through the connection conductors 44u to 44w (44u not shown) contained in the bus disconnector container 24 and the through conductor embedded in the insulating spacer S8. Disconnector DS
c is connected to the other end.

Each container has an airtight structure, and SF ₆ gas is sealed in each container at a predetermined pressure.

[0022]

As described above, in the conventional MOF unit, the power supply-side disconnecting switch DSa, the power-side grounding switch ESa, the load-side disconnecting switch DSb, and the load-side grounding switch ESb , MOF bypass disconnector DSc
Are stored in separate containers, so that there is a problem that the number of containers increases and the size of the MOF unit increases.

Incidentally, the MO shown in FIGS.
The F unit required 12 containers, 3 expansion joint tubes, and 10 insulating spacers, and the overall dimensions of the MOF unit were 3780 mm x 4080 mm.

The circuit configuration of the MOF unit differs depending on the power receiving mode, such as two-line power reception and standby power reception, loop power reception, and the possibility of power failure during MOF inspection.
In the unit, it is necessary to make the structure of the container different every time the circuit configuration of the MOF unit is different, which is troublesome. M
Since the difference in the structure of the container of the OF unit affects the configuration and installation dimensions of the entire gas insulated switchgear,
It is desirable to unify the structure of the container of the F unit.

An object of the present invention is to provide a MOF unit for a gas insulated switchgear, which can simplify and unify the structure of a container.

[0026]

According to the present invention, there is provided a power supply side bus conductor forming a part of a power supply side bus, a load side bus conductor forming a part of a load side bus, and a power supply side bus conductor. A MOF main body having a power supply side terminal and a load side terminal connected to the load side bus conductor, a power supply side disconnector for opening and closing a circuit connecting the power supply side terminal of the MOF main body and the power supply side bus conductor, and a power supply A power-side grounding switch for grounding the terminal on the MOF side of the side disconnector, a load-side disconnector for opening and closing a circuit connecting the load-side terminal of the MOF body and the load-side bus conductor,
The present invention is applied to a MOF unit for a gas insulated switchgear provided with a load-side grounding switch for grounding the MOF-side terminal of the load-side disconnector.

According to the present invention, there is provided an MOF connection container having a container main body connected to the MOF main body, and first and second nozzles protruding from the side surface of the container main body to the same side in the horizontal direction. A first bus container connected to a first nozzle portion of the connection container via a first insulating spacer, and a first bus container connected to a second nozzle portion of the MOF connection container via a second insulating spacer. A second bus container is provided, and the power supply-side bus conductor and the load-side bus conductor are arranged in the first bus container and the second bus container, respectively.

The power-supply-side disconnecting switch and the power-supply-side grounding switch are combined so that they can be operated in conjunction with a common operation shaft to form a power-supply-side composite switch.
It is arranged at a position corresponding to the first nozzle in the OF connection container.

In the present invention, the compound switch means a switch in which a disconnecting switch and a grounding switch for grounding one end of the disconnecting switch are combined so that they can be interlocked by a common operating shaft. As a composite switch, for example, an operation mechanism that attaches a movable contact of a disconnector and a fixed contact of a grounded switch to a common conductive base and interlocks the movable contact of the disconnector and the movable contact of the grounded switch And when the movable contact of the disconnector is in contact with the fixed contact of the disconnector (when the disconnector is in the closed state), the movable contact of the grounding switch is moved from the fixed contact of the grounding switch. When the movable contact of the disconnecting switch is separated from the fixed contact of the disconnecting switch (when the disconnecting switch is open), The grounding switch so that the movable contact of the grounding switch contacts the fixed contact of the grounding switch (when the grounding switch is closed). One that is operated in conjunction can be used.

The composite switch includes a fixed contact for a disconnecting switch, a fixed contact for a grounding switch,
A movable contact common to the disconnector and the earthing switch, the movable contact being in contact with the fixed contact for the disconnector and being separated from the fixed contact for the earthing switch (when the disconnector is closed) , The position where the grounding switch is opened), and away from the fixed contact for disconnector,
It is also possible to use one that is displaced to a position where it contacts the fixed contact for the grounding switch (the position where the disconnector is opened and the grounding switch is closed).

As described above, the disconnecting switch and the grounding switch connected to the MOF main body for disconnecting the MOF from the bus are combined so that they can be operated in conjunction with a common operation shaft, and the combined disconnecting switch is connected. When the switch and the earthing switch are arranged in the MOF connection container, the MOF unit is configured using a smaller number of containers than the conventional MOF unit in which the disconnector and the earthing switch are respectively arranged in different containers. Therefore, the size of the MOF unit can be reduced and the installation space can be reduced.

The present invention also provides a power supply-side bus conductor that forms a part of a power supply-side bus, a load-side bus conductor that forms a part of a load-side bus, and a power supply-side terminal connected to the power supply-side bus conductor. A MOF body having a load-side terminal connected to the load-side bus conductor; a power-side disconnector for opening and closing a circuit connecting a power-side terminal of the MOF body and the power-side bus conductor; A power supply side grounding switch for grounding the terminal on the MOF side of the side disconnector, and a circuit connected between the power supply side bus conductor and the load side bus conductor to bypass the MOF body when the circuit is closed. The present invention is applied to a MOF unit for a gas insulated switchgear having a MOF bypass disconnector.

When the present invention is applied to such a MOF unit, the container body connected to the MOF body and the first and second nozzles protruding from the side surface of the container body to the same side in the horizontal direction are also provided. A MOF connection container, a first busbar container connected to a first nozzle portion of the MOF connection container via a first insulating spacer, and a second nozzle portion of the MOF connection container. A second bus container connected via two insulating spacers.

The power-side disconnecting switch and the power-side grounding switch are combined so that they can be operated in conjunction with a common operation shaft to form a power-side compound switch, and the load-side disconnecting switch and the load-side grounding switch are combined. A load-side composite switch is constructed by combining the switch and the switch so that the switch and the switch can be operated in conjunction with a common operation shaft.

The power supply-side bus conductor and the load-side bus conductor are accommodated in the first bus container and the second bus container, respectively, and the power supply-side composite switch and the load-side composite switch are respectively located in the MOF connection container. Are disposed at a position corresponding to the first nozzle portion and a position corresponding to the second nozzle portion. Also MOF
The bypass disconnecting switch is placed in the MOF connection container in a state where it does not interfere with the power supply side composite switch and the load side composite switch.

As described above, the power supply-side disconnector and the power-side grounding switch are combined and arranged at a position corresponding to the first nozzle in the MOF connection container, and the load-side disconnector and the load-side grounding switch are combined. The switch is compounded and arranged at a position corresponding to the second nozzle in the same MOF connection container, and the disconnect switch for the MOF bypass is located at a position where it does not interfere with the power supply-side composite switch and the load-side composite switch. When placed in the MOF connection container in a state where it is positioned, the power supply side disconnector, the power supply side grounding switch, the load side disconnector, the load side grounding switch, and the MOF bypass disconnector are respectively disposed in separate containers. Conventional MO
The number of containers can be significantly reduced as compared with the F unit.

The present invention also provides a power supply-side bus conductor constituting a part of the power supply-side bus, a load-side bus conductor constituting a part of the load-side bus, a power supply-side terminal connected to the power supply-side bus conductor, and M having a load-side terminal connected to the load-side bus conductor
One end of the power supply disconnector, one end of which is connected to the power supply side terminal of the OF main body, the MOF main body, the power supply side grounding switch that grounds one end of the power supply side disconnector, and one end connected to the other end of the power supply side disconnector A power supply bus-side disconnector having the other end connected to the power supply-side bus conductor, a power supply bus-side grounding switch for grounding one end of the power supply bus-side disconnector, and one end connected to the load-side terminal of the MOF body. A load-side disconnector having an end connected to the load-side bus conductor, a load-side grounding switch for grounding one end of the load-side disconnector, and a load-side disconnector connected between the other end of the power-side disconnector and the load-side bus conductor; Applied to a gas insulated switchgear MOF unit including a MOF bypass disconnector that constitutes a circuit that bypasses the MOF body when the circuit is closed.

In the case where the present invention is applied to the MOF unit having such a configuration, the container body connected to the MOF body and the first projecting side projecting from the side surface of the container body to the same side in the horizontal direction are also used.
And a MOF connection container having a second nozzle section and a MOF
A first bus container connected to a first nozzle portion of the connection container via a first insulating spacer, and a first bus container connected to a second nozzle portion of the MOF connection container via a second insulating spacer. A second bus container is provided. In addition, the power supply-side disconnecting switch and the power-side grounding switch are combined so that they can be operated in conjunction with a common operation axis to form a power-side composite switch, and the load-side disconnecting switch and the load-side grounding switch are combined. Are combined so that they can be operated in conjunction with each other by a common operation shaft to constitute a load-side composite switch. Furthermore, the power bus-side disconnecting switch and the power bus-side grounding switch are combined so that they can be operated in conjunction with a common operation shaft to form a power bus-side composite switch.

In this case, the power supply-side bus conductor and the load-side bus conductor are disposed in the first bus container and the second bus container, respectively, and the power supply bus-side composite switch is disposed in the first bus container. . Further, the power supply-side composite switch and the load-side composite switch are respectively arranged at positions corresponding to the first nozzle section and at positions corresponding to the second nozzle section in the MOF connection container.
Further, the MOF bypass disconnecting switch is disposed in the MOF connection container in a state where the disconnecting switch does not interfere with the power supply side composite switch and the load side composite switch.

[0040]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIGS. 1 to 5 show an example of the configuration of a MOF unit when the present invention is applied to a MOF unit Um used in a power receiving facility having a normal standby two-line power receiving 1 MOF 2 transformer bank configuration shown in FIG. It is shown.

1 to 3, reference numeral 10 denotes an MOF main body. This MOF main body is connected to V and connected to a transformer PTuv and PTvw for detecting voltages of three phases U, V and W, and both ends (U phase). And W-phase) current transformers CTu and CTw which are stored in the container 5 together with insulating oil. The container 5 has a nozzle portion 5a on a side surface thereof,
U-phase to W-phase terminals 6u, 6 are provided inside the nozzle base 5a.
v, 6w are provided.

The configuration of the MOF main body 10 is, for example, as shown in FIG. 10, and each terminal 6u of the both-end phase (U-phase and W-phase).
6w is a power supply side terminal K connected to the input terminals of both phases of the instrument transformer connected in V in the vessel 5 and one end of the primary coil of the current transformer, and the other end of the primary winding of the current transformer. It is composed of a paired terminal with the connected load side terminal L. The middle-phase (V-phase) terminal 6v of the MOF main body 10 is a single terminal serving both as a power supply terminal and a load terminal.
v is connected to the middle-phase terminals of the instrument transformers PTuv and PTvw which are V-connected in the container 5.

In the present invention, the lower end of the MOF connection container 50 is connected to the container 5 of the MOF main body 10. M shown
The OF connection container 50 is disposed with a box-shaped lower container 51 supported by the gantry 49 and a state where the axial direction is oriented vertically, and the lower end is provided above the lower container 51 via the partition plate 52. And a cylindrical upper container 53 connected to the nozzle 51a.

The nozzle portion is a tubular portion provided so as to protrude from a wall portion of the container in a predetermined direction, and is used for connecting another container or plate to the container. A flange for connecting another container, plate or the like is provided at the tip. The nozzle is usually formed by welding a pipe to the periphery of a hole provided in the wall of the container. The cross-sectional shape of the nozzle section is set to an appropriate shape such as a circle, an ellipse, and a rectangle depending on the shape of the other party to be connected.

On opposite side surfaces of the lower container 51, nozzles 51b and 5 projecting horizontally from the lower container, respectively.
1c, and one of these nozzles 51b is an MOF
It is connected to a nozzle 5a provided on the side surface of the container 5 of the main body. A lid plate 54 for airtightly closing an opening inside the nozzle portion 51c is attached to the nozzle portion 51c. The opening inside the nozzle part 51c is used as a handhole for work at the time of assembly and maintenance and inspection.

The side surface of the upper container 53 facing the MOF side is vertically spaced from the first nozzle 53a with the second nozzle 53a.
A third nozzle section 53c and a fourth nozzle section 53d are provided at positions facing the first nozzle section 53a and the second nozzle section 53b, respectively. ing. In this example, the first nozzle section 53a and the third nozzle section 53c are provided at a position near the lower end of the upper container 53, and the second nozzle section 53b and the fourth nozzle section 53d are connected to the upper container 53d. 5
3 is provided near the upper end.

A first bus container 56 is connected via a first insulating spacer 55 to a first nozzle 53 a provided in the upper container of the MOF connection container 50. The first bus container 56 has a cylindrical vertical conduit portion 56a disposed with the axis thereof oriented in the vertical direction, and a cylindrical vertical conduit portion 56a having one end connected to a portion near one end of the vertical conduit portion 56a. A container having a first horizontal conduit portion 56b and a second horizontal conduit portion 56c provided so as to be orthogonal to the vertical conduit portion 56a at a portion near the other end of the vertical conduit portion 56a, The other end of the first horizontal pipeline 56b is connected to the MOF via the first insulating spacer 55.
It is connected to the first nozzle 53 a of the upper container of the connection container 50. The second horizontal conduit portion 56c is provided so as to extend in a direction perpendicular to the first horizontal conduit portion 56b. In the illustrated example, the second horizontal conduit portion 56c is a first horizontal conduit portion. A first bus container 56 is provided so as to be located above the road portion 56b.

A second busbar container 60 is connected via a second insulating spacer 59 to a second nozzle 53b provided near the upper end of the upper container of the MOF connection container 50. The second busbar container 60 has a cylindrical horizontal conduit portion 60a extending parallel to the second horizontal conduit portion 56c provided in the first busbar container 56, and is orthogonal to the horizontal conduit portion 60a. A cruciform tubular container having a vertical pipe section 60b;
One end of Ob is connected to a second nozzle 53b of the MOF connection container via a second insulating spacer 59. The other end of the vertical pipe section 60 b is airtightly closed by a cover plate 61.

In the MOF unit, the power supply side bus and the MOF
Disconnectors and current transformers may be added between
In the illustrated example, in order to secure a space for accommodating these added devices, as a first bus container, a first busbar extending in a direction perpendicular to one end and the other end of the vertical conduit portion 56a is used. Using a container provided with the second horizontal conduits 56b and 56c, additional equipment such as a disconnector and a grounding switch is accommodated in the vertical conduit 56a, and the first horizontal conduit 5
An additional device such as a current transformer can be accommodated in 6b.

The vertical conduit 56 of the first bus container 56
a and a configuration in which the second bus container 60 is disposed in a space formed between the MOF connection container 50 and
The first bus container 56 and the second bus container 60 can be efficiently arranged in a limited space.

The opening at the upper end of the upper container 53 of the MOF connection container 50 is hermetically closed by a lid plate 62, and the openings of the third nozzles 53 c and 53 d are hermetically closed by lid plates 63 and 64. I have.

The three-phase insulating bushings 65u, 65v and 65w in a state where the partition plate 52 for partitioning the lower container 51 and the upper container 53 of the MOF connection container 50 is airtightly penetrated.
Is attached. The insulating bushing of each phase includes an insulating sleeve 65a made of an insulating resin such as an epoxy resin and a through conductor 65b penetrating the shaft core of the insulating sleeve 65a. The penetrating conductors 65b of the bushings 65u and 65w of the two-end phase are coaxially arranged inside the tubular outer conductor 65b1 and insulated from the outer conductor inside the outer conductor 65b2.
And a reciprocating conductor having: MOF connection container 5
In order to ensure a sufficient space for arranging the equipment in the housing 0, the insulation bushing 65 is provided as long as the insulation between the charged part and the ground potential part is not hindered.
The axial dimension of u to 65w is made as small as possible.

In the illustrated example, the insulating bushings 6 at both ends are used.
The outer conductor 65b1 of the through conductor provided so as to penetrate the respective shaft cores of 5u and 65w is used as the outward conductor, and is provided in the lower container 51 of the outward conductor (65b1) of each of the bushings 65u and 65w. The lead-out ends are connected to the power supply side terminals K of both phases (U-phase and W-phase) of the MOF main body 10 via connection conductors 66uK and 66wK in the lower container 51. Also, bushing 6 of both ends
The inner conductor 65b2 of the through conductor penetrating through each of 5u and 65w is used as a return path conductor, and the end of each of the return path conductors (65b2) of the bushings 65u and 65w led out into the lower container 51 is the lower end. In the container 51, the MOF body 10 is connected to the load-side terminals L of the terminals 6 u and 6 w at both ends of the MOF body 10 via connection conductors 66 uL and 66 wL.

The penetrating conductor 65c penetrating the shaft core of the middle-phase insulating bushing 65v is a single conductor.
The through conductor 65c is connected to the middle terminal 6v of the MOF main body via the connection conductor 66v.

As shown in FIG. 2, the MOF connection container 50
In the upper container 53, a frame 6 having a plate surface orthogonal to the axis of the first nozzle portion 53a and the second nozzle portion 53b is provided.
7, and the frame 67 is fixed to the upper container 53 by an appropriate means.

The portion corresponding to the first nozzle 53a of the frame 67 has a horizontal direction perpendicular to the central axis of the first nozzle 53a and the central axis of the upper container 53 (see FIG. 2). The three-phase switch supporting plates 68u to 68w (see FIG. 3) arranged side by side in a direction perpendicular to the
Through 69w. The three-phase switch supporting plates 68u to 68w are made of a conductive material such as copper, and the sliding contacts 71 of the U-phase to W-phase power-side disconnectors DSa are respectively connected to these supporting plates by first axes. Are fixed in a state of being parallel to the central axis of the nozzle base 53a, and each of the sliding contacts 7 of the U-phase to the W-phase.
1, the rod-shaped movable contact 72 of the U-phase or W-phase power disconnector DSa is brought into sliding contact.

The three-phase switch support plates 68u to 68w also have sliding contacts 71 of the three-phase power disconnector DSa.
The fixed contacts 73 of the three-phase power-supply-side grounding switch ESa disposed below each of them are attached. 3
The three-phase fixed contacts 73 are attached so as to face the frame 67. The three-phase fixed contacts 73 are arranged so as to share the axis with the three-phase fixed contacts 73, and the three-phase fixed contacts 73 are fixed to the frame 67. The movable contact 75 of the power-side grounding switch ESa is in sliding contact.

Also, the first nozzle connected to the first nozzle 53a.
In the insulating spacer 55, three-phase through conductors 55u to 55w (see FIG. 2; 55u is not shown) arranged in a triangular manner are embedded, and are disposed in the upper container 53 of the MOF connection container. Phase connection conductors 76u to 76w
Is connected to the three-phase through conductor 5 of the first insulating spacer 55.
5u to 55w. Three-phase connection conductor 7
The other end of each of 6u to 76w is arranged at a position facing the sliding contact 71 of the three-phase power supply disconnector DSa, and the other end of each of the three-phase connection conductors 76u to 76w is connected to the three-phase power supply side. A fixed contact 77 with which the movable contact 72 of the disconnector DSa contacts is attached. The movable contact 72 is supported by the sliding contact 71 so as to be linearly displaceable, and a predetermined insulating distance is provided between the fixed contact 77 and a closed position where the movable contact 72 comes into contact with the fixed contact 77 by an operation mechanism described later. Between the open position and the open position. In the illustrated example, the three-phase switch-side support plate 68u to 68w includes a movable contact 72 supported via sliding contacts 71, respectively, and a fixed contact 77 to which the movable contact 72 contacts. DSa is configured.

A three-phase power-side grounding switch is provided by fixed contacts 73 attached to the connection conductors 76u to 76w, respectively, and movable contacts 75 supported on the switch support plates 68u to 68w via sliding contacts 74, respectively. The device ESa is configured.

Power disconnector DSa and grounding switch ESa
An operation lever 80 is supported by the frame 67 in order to perform the interlocking operation. The operation lever 80 has an intermediate portion supported by a frame 67 via a rotation shaft. One end of the operation lever 80 has a movable contact 72 of a power disconnector DSa.
Are connected via an insulating operation rod 81. A movable contact 75 of the grounding switch ESa is connected to the other end of the operating lever 80, and the movable contact 7 of the disconnector DSa is turned when the operating lever 80 is turned counterclockwise in FIG.
2 and the movable contact 75 of the grounding switch ESa are displaced to the closed position and the open position, respectively.
0 turns clockwise in FIG. 2 when disconnector DS
The movable contact 72a and the movable contact 75 of the ground switch ESa are displaced to the open position and the closed position, respectively.

The third nozzle 53c of the MOF connection container 50
An operation shaft 82 is rotatably supported by a lid plate 63 that closes the cover 63 via a bearing 81 having an airtight holding structure. Operation shaft 82
A power transmission mechanism (not shown) is provided between the control lever 80 and the operation lever 80. When the operation shaft 82 is rotated in one direction, the operation lever 80 rotates counterclockwise in FIG. When the operating shaft 82 is rotated in the other direction, the operating lever 80 is rotated clockwise to disconnect the disconnector DS.
a and the earthing switch ESa are set to an open state and a closed state, respectively. An operation lever 80, an operation shaft 81, and a power transmission mechanism for transmitting the rotation of the operation shaft 81 to the operation lever 80 and rotating the operation lever 80 clockwise and counterclockwise, include a power supply side disconnector DSa and An operation mechanism that operates the power-side grounding switch ESa in conjunction with each other is configured.

A portion corresponding to the second nozzle portion 53b of the frame 67 is provided in a horizontal direction perpendicular to the central axis of the second nozzle portion 53b and the central axis of the upper container 53 (see FIG. 2). Switch support plates 90u to 90w arranged side by side in the direction perpendicular to
(See FIG. 3). The three-phase switch supporting plates 90u to 90w are made of a conductive material, and the sliding contacts 92 of the U-phase to W-phase load-side disconnectors DSb are respectively connected to the supporting plates 90u to 90w by the second axes. Is fixed in a state of being parallel to the central axis of the nozzle section 53b. The rod-shaped movable contacts 93 of the U-phase to W-phase load-side disconnectors DSb are in sliding contact with the U-phase to W-phase sliding contacts 92, respectively.

The three-phase switch supporting plates 90u to 90w are also provided with sliding contacts 92 of the three-phase load-side disconnector DSb.
The fixed contacts 94 of the three-phase load-side earthing switch ESb disposed below each of them are attached. 3
The fixed contacts 94 of the three phases are mounted so as to face the frame 67 side, and the three-phase fixed contacts 94 are arranged so as to share the axis with the fixed contacts 94 of the three phases. The movable contact 96 of the load side earthing switch ESb is in sliding contact.

The first nozzle connected to the second nozzle 53b
In the insulating spacer 59, three-phase through conductors 59u to 59w (see FIG. 2; 59u is not shown) arranged in a triangular shape are embedded, and are disposed in the upper container 53 of the MOF connection container. Phase connection conductors 97u to 97w
Are connected to the three-phase through conductors 59u to 59w of the second insulating spacer 59, respectively. The other ends of the three-phase connection conductors 97u to 97w are arranged at positions facing the sliding contacts 92 of the three-phase load-side disconnector DSb, respectively, and the three-phase connection conductors 97u to 97w are provided.
A fixed contact 98 to which the movable contact 93 of the three-phase load-side disconnector DSb comes in contact is attached to the other end of each. The movable contact 93 is a sliding contact 92
Between the closed position where the fixed contact 98 is brought into contact with the fixed contact 98 and the open position where the fixed contact 98 is separated from the fixed contact 98 by an operation mechanism described later. Can be displaced between.
In the illustrated example, three-phase switch supporting plates 90u to 90w
A three-phase load-side disconnector DSb is constituted by a movable contact 93 supported via sliding contacts 92 and a fixed contact 98 with which the movable contact 93 contacts.

A three-phase load-side grounding switch is provided by fixed contacts 98 respectively attached to the connection conductors 97u to 97w and movable contacts 96 supported on the switch support plates 90u to 90w via sliding contacts 95, respectively. Device ESb.

Load-side disconnector DSa and grounding switch ESb
An operation lever 99 is supported by the frame 67 in order to perform the interlock operation. The operation lever 99 is provided for each phase, and an intermediate portion thereof is supported by the frame 67 via a rotation shaft. A movable contact 93 of the load-side disconnector DSb is connected to one end of the operation lever 99 of each phase via an insulating operation rod 100. A movable contact 96 of a ground switch ESb is connected to the other end of the operation lever 99 of each phase, and a movable contact 93 of the disconnector DSb and a ground switch are connected when the operation lever 99 rotates counterclockwise in FIG. The movable contact 96 of the disconnector DSa and the movable contact 96 of the ground switch ESb are displaced when the operating lever 99 is rotated clockwise in FIG.
Are displaced to an open position and a closed position, respectively.

The third nozzle 53d of the MOF connection container 50
The operation shaft 101 of each phase is rotatably supported via a bearing plate 100 having an airtight structure on the lid plate 64 that closes.
A power transmission mechanism (not shown) is provided between the operation shaft 101 of each phase and the operation lever 99, and the operation shaft 10 of each phase is provided.
When one is rotated in one direction, the operation lever 99 rotates counterclockwise in FIG. 2 to bring the disconnector DSb and the earthing switch ESb of each phase into a closed state and an open state, respectively.
When the operation shaft 101 of each phase is rotated in the other direction, the operation lever 99 of each phase rotates clockwise so that the disconnector DSb and the earthing switch ESb are opened and closed, respectively. ing.

As shown in FIG. 4, the switch supporting plates 68u and 68w for supporting the power-supply-side disconnector DSa and the grounding switch ESa at both ends are provided with insulating bushings 65 at both ends.
The switch support plates 90u and 90w connected to the outward conductor 65b1 provided on the u and 65w and supporting the load-side disconnector DSb and the earthing switch ESb respectively extend vertically in the upper container of the MOF connection container. The conductor 102 is connected to the return conductor 65b2 of the insulating bushings 65u and 65w.

As shown in FIG. 5, the switch supporting plate 68v for supporting the intermediate-phase power disconnector DSa and the earthing switch ESa supports the load-side disconnector DSb and the earthing switch ESb. The switch supporting plate 90v is connected to the switch supporting plate 90v via the connection conductor 103, and the switch supporting plate 68v is connected to the through conductor 65c provided in the medium-phase insulating bushing 65v.

The MOF bypass disconnector DS is provided near the respective distal ends of the connection conductors 76u to 76w, one ends of which are connected to the through conductors provided on the first insulating spacer 55.
c, and the movable contact 106 of the disconnector DSc is brought into contact with the sliding contact 105. The connection conductors 1 extending vertically in the upper container 53 of the MOF connection container are provided near the ends of the connection conductors 97u to 97w connected to the through conductors 59u to 59w provided on the second insulating spacer 59, respectively.
The upper ends of 07u to 107w (107w is not shown) are connected to these connection conductors 106u to 106w.
The fixed contact 108 of the MOF bypass disconnector DSc is attached to the lower end of the switch. Sliding contact 105
The movable contact 106 and the fixed contact 108 constitute a MOF bypass disconnector DSc. M
An operation shaft 10 is provided near the lower end of the upper container 53 of the OF connection container.
9 is supported via a bearing having an airtight structure, and the operating shaft 1
The operation lever 110 is attached to the operation lever 09. The movable contact 106 is provided on the operating lever 110 by the insulating operating rod 1.
The movable contact 10 is connected by rotating the operating shaft 109 from outside the MOF connection container.
6 can be displaced between a closed position where it comes into contact with the fixed contact 108 and an open position where it becomes a state where a predetermined insulation distance is provided between the fixed contact 108 and the fixed contact 108.

As shown in FIG. 2, the first bus container 56
A three-phase power-side bus conductor 120 constituting a part of the power-side bus BUS1 is provided in a second horizontal conduit portion 56c provided in
Are stored, and the three-phase bus conductors 120 are connected via the three-phase connection conductors 121 arranged in the first horizontal conduit portion 56b and the vertical conduit portion 56a of the first bus container 56, Three-phase through conductor 55u embedded in first insulating spacer 55
To 55w.

The three-phase load-side bus conductor 122 constituting a part of the load-side bus BUS2 is accommodated in the horizontal conduit 60a provided in the second bus-bar container 60. Through conductors 59u to 59u in which bus conductor 122 is embedded in second insulating spacer 59 through connection conductor 123
w.

As shown in FIG. 1, one end of the second horizontal conduit portion 56c of the first bus container is connected to a tubular bus container 127 via an expansion joint pipe 125 and an insulating spacer 126. The other end of the second horizontal bus line 56c is connected to a tubular bus container 130 via an expansion joint tube 128 and an insulating spacer 129. The power supply side bus BUS1 is constituted by the bus conductor 120 housed in the second horizontal bus conduit 56c of the first bus container and the bus conductors housed in the bus containers 127 and 130, respectively. .

Further, one end of the horizontal conduit 60a provided in the second bus container 60 is connected to a tubular bus container 133 via an expansion joint pipe 131 and an insulating spacer 132, and is connected to the horizontal conduit 60a. The other end is connected to a tubular bus container 136 via an expansion joint tube 134 and an insulating spacer 135. A bus conductor 122 housed in the horizontal conduit portion 60a;
The load-side bus BUS2 is constituted by the bus conductors accommodated in the bus containers 133 and 136, respectively.

In the MOF connection container 50, the first bus container 5
6, the inside of the second bus container 60, and the bus container 127, 1
SF ₆ gas is sealed at a predetermined pressure in 30, 133, and 136.

As described above, the power-supply-side disconnector DSa and the power-supply grounding switch ESa whose main parts are supported by the common switch supporting plate and are combined are connected to the first nozzle section in the MOF connection container 50. 53a and a disconnector DSa
And the grounding switch ESa are operated in conjunction with a common operation shaft 82, and the combined load-side disconnector DSb and load-side grounding switch ESb are also
It is arranged at a position corresponding to the second nozzle section 53b in the connection container and is configured to be operated in conjunction with the common operation shaft 101. Further, the disconnector DSc for MOF bypass is connected to the disconnector DSc.
a, DSb and the earthing switches ESa, ESb, when placed in the MOF connection container in a state where they do not interfere with each other, the power-side disconnecting switch DSa, the power-side earthing switch ESa, and the load-side disconnecting switch DSb , Load side earthing switch ES
The number of containers can be greatly reduced as compared with the conventional MOF unit in which the b and the MOF bypass disconnector DSc are respectively disposed in separate containers.

Incidentally, the conventional MOF unit requires a total of 12 containers, 3 expansion joints and 10 insulating spacers, and the area required for installation of the MOF unit is small.
3780 mm x 4080 mm was required, but by configuring as in the present invention, two containers 5
1 and 53, and two bus containers 56 and 60 for a total of 4
Since the container of the MOF unit can be configured by the four containers, the four expansion joints, and the six insulating spacers, the configuration of the container of the MOF unit can be simplified. Further, by configuring as in the present invention, the installation area can be reduced to a low of 1950 mm × 2700 mm.

In the above example, the spare spare 2 shown in FIG.
Although the case where the present invention is applied to the MOF unit used in the gas insulated switchgear having the line receiving 1 MOF2 transformer bank configuration has been described, the present invention can also be applied to the MOF unit used in the substation that performs loop power receiving. As shown in FIG. 12, a MOF unit Um used for a gas insulated switchgear installed in a substation that performs loop power reception includes a power supply-side bus conductor forming a part of a power supply-side bus BUS1 and a load-side bus BUS2. A MOF main body 10 having a load-side bus conductor constituting a part, a power-side terminal connected to the power-side bus BUS1, and a load-side terminal connected to the load-side bus BUS2, and one end connected to the power-side terminal of the MOF main body. A power-side disconnector DSa to be connected, and the power-side disconnector DSa
A power-side grounding switch ESa that grounds one end of the power-source-side disconnector DSa, one end of which is connected to the other end of the power-side disconnector DSa, and the other end of which is connected to the power-side bus conductor; And a load-side disconnector D having one end connected to the load-side terminal L of the MOF body 10 and the other end connected to the load-side bus conductor.
Sb, a load-side earthing switch ESb that grounds one end of the load-side disconnector DSb, and a MOF that is connected between the other end of the power-side disconnector DSa and the load-side bus conductor BUS2 to be closed. MO that constitutes a circuit that bypasses main body 10
An F bypass disconnector DSc.

FIG. 6 shows an example of a unit configuration in which the present invention is applied to the MOF unit Um shown in FIG.
In the example shown in FIG. 6, the configuration of the MOF connection container 50 and the configurations of the first and second busbar containers are the same as those shown in FIGS.
And the configuration of the equipment housed in the MOF connection container 50 is the same as the example shown in FIGS.

In the example shown in FIG. 6, the first bus container 56
The power bus-side disconnector DSd and the earthing switch ESd shown in FIG. 12 are housed in the lower portion of the vertical conduit section 56a.

A frame 140 is fixed to the lower portion of the first bus container in the vertical conduit portion 56a.
40, a three-phase switch supporting plate 1 via an insulating support 141.
42u to 142w (only 142v is shown in FIG. 6) are supported. Three-phase switch support plate 142
u to 142w are the axis of the vertical pipeline 56a and the horizontal pipeline 5
6b are arranged side by side in a direction perpendicular to the axis line (the direction perpendicular to the plane of FIG. 6), and these three-phase switch supporting plates 142u to 142w are provided with three-phase disconnecting switches DSd and grounding switches ESd, respectively. The main part is supported, and the three-phase disconnector DSd and the earthing switch ESd are combined so as to be operated in conjunction with a common operation shaft.

More specifically, the switch supporting plate 14
2u to 142w have U-phase to W-phase disconnectors D, respectively.
A sliding contact 144 with which the Sd movable contact 143 makes sliding contact, and a fixed contact 145 of the U-phase or W-phase grounding switch ESd are attached. Also the first
Of the U-phase to W-phase disconnectors DSd are connected to the lower ends of the connection conductors 146u to 146w whose upper ends are connected to the three-phase power supply-side bus conductors 120 housed in the second horizontal conduit portion 56c of the bus container 56 of FIG. A fixed contact 147 is attached. A sliding contact 149 with which the movable contact 148 of the ground switch ESd makes sliding contact is attached to the frame 140. An operation lever 150 is also rotatably supported by the frame 140, and a movable contact 143 of the disconnector DSd is connected to one end of the operation lever 150 via an insulating operation rod 151, and a movable contact 148 of the ground switch ESd. Is connected to the other end of the operation lever 150. The operation levers 150 respectively provided for the three-phase disconnector DSd and the earthing switch ESd are individually rotated by an operation shaft (not shown). Disconnector D for each phase
The Sd and the earthing switch ESd are opened and closed in conjunction with each other. Disconnector DSd and ground switch ESd
Are operated so that when one of them is closed, the other is open, and when one is open, the other is closed.

Three-phase switch support plates 142u to 142u
w is the three-phase through conductors 55u to 55h of the first insulating spacer 55 via the connection conductors 152u to 152w accommodated in the first horizontal conduit portion 56b of the first busbar container 56.
5w. Each of the connection conductors 152u to 152w accommodated in the first horizontal conduit portion 56b is provided with a current transformer CT of a conduit interior type. Other configurations are the same as those in the examples shown in FIGS.

Also in the example shown in FIG. 6, among the disconnecting switches provided for separating the MOF from the bus, the disconnecting switch disposed on the side close to the MOF and the grounding switch for grounding the terminal on the MOF side of the disconnecting switch. All are housed in a MOF connection container 50 connected to the MOF main body. With this configuration, it is possible to simplify the configuration of the container that houses the components of the MOF unit. Also, as mentioned above,
When the first bus container is constituted by a vertical pipe section and first and second horizontal pipe sections provided at one end and the other end of the vertical pipe section, respectively, Since the equipment can be further accommodated by utilizing the space in the vertical pipe section and the first horizontal pipe section of the bus container, the disconnector DSd and the grounding switch are further provided on the power supply side bus BUS1 side as in the above example. ESd
It is possible to easily cope with the case where it is necessary to add the current transformer CT and the current transformer CT, and it is possible to configure MOF units having various circuit configurations without changing the basic configuration of the container.

In a substation that performs loop power reception, FIG.
As shown in the figure, disconnector DS
a and a ground switch ESa in some cases. FIGS. 7 and 8 show an example in which the present invention is applied to an MOF unit having such a circuit configuration.

In the example shown in FIGS. 7 and 8, the power supply side disconnector DSa and the earthing switch ESa are provided in the vertical pipe portion 56a of the first busbar container 56 in the same structure as the structure shown in FIG. Are stored in the first horizontal conduit portion 56b.
2u to 152w and a conduit-internal type current transformer CT are arranged.

In the upper container 53 of the MOF connection container 50, a connecting conductor for connecting the through conductor 55u embedded in the first insulating spacer 55 and the outward conductor (the inner conductor 65b2 in this example) of the insulating bushing 65u. 150u, a connecting conductor 150w for connecting the through conductor 55w embedded in the first insulating spacer 55 and the outward conductor (in this example, the inner conductor 65b2) of the insulating bushing 65w, and the connecting conductor 150w embedded in the second insulating spacer 59. Return conductor of through conductor 59u and insulating bushing 65u (outer conductor 65b1 in this example)
Connecting conductor 151u connected to the second insulating spacer 5
9, a through conductor 59w and an insulating bushing 65
w, a connection conductor 151w connected to the return conductor (in this example, the outer conductor 65b1); a connection conductor 152 connecting the through conductor 55v embedded in the first insulating spacer 55 to the through conductor of the insulating bushing 65v; A connection conductor 153 that connects between the through conductor 55v embedded in the first insulating spacer 55 and the through conductor 59v embedded in the second insulating spacer 59 is accommodated.

In the lower container 51 of the MOF connection container, the ends of the forward conductors (65b2) of the two-phase insulating bushings 65u and 65w, which are led into the lower container 51, are connected to both ends of the MOF main body 10 ( The connection conductors 66uK and 66wK connected to the power supply side terminal K of the U-phase and the W-phase) and the return conductors (6
5b1) Connection conductors 66uL and 66wL for connecting the ends led out into the lower container 51 to the load-side terminals L of both ends (U phase and W phase) of the MOF main body 10, and an insulating bushing 65v
Is connected to the middle conductor terminal 6v of the MOF.

In the above example, the first nozzle 53a for connecting the first bus container 56 and the second nozzle 53b for connecting the second bus container 60 are respectively connected to the lower and upper portions of the MOF connection container. The first bus connecting the first bus container
May be provided above the MOF connection container, and the second nozzle portion for connecting the second busbar container may be provided below the MOF connection container.

In the above example, the nozzle 53b provided at the upper part of the MOF connection container 50 and the nozzle 53 provided at the lower part
a as a first nozzle section and a second nozzle section, a first busbar container 56 is connected to the first nozzle section via a first insulating spacer, and the second nozzle section is connected to the first nozzle section. When connecting the second busbar container 60 via the second insulating spacer,
The second horizontal conduit portion 56c of the busbar container 56 is positioned lower than the first horizontal conduit portion 56b, and the second horizontal conduit portion 56c is placed between the second horizontal conduit portion 56c and the MOF connection container. Busbar container 6
It is preferable to arrange 0.

[0091]

As described above, according to the present invention, the MOF
The disconnector and the grounding switch connected to the MOF main body for disconnecting from the bus are combined so as to be operated in conjunction with a common operation shaft, and the combined disconnector and grounding switch are connected to the MOF connection container. Since it was configured to be placed inside
Using a smaller number of containers than a conventional MOF unit in which a disconnector and a grounding switch are arranged in separate containers, respectively,
The OF unit can be configured, and there is an advantage that the installation space can be reduced by reducing the size of the MOF unit.

[Brief description of the drawings]

FIG. 1 is a top view showing a configuration example of a MOF unit according to the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a sectional view taken along line BB of FIG. 1;

FIG. 4 is a perspective view schematically showing a configuration of a U-phase disconnector and a grounding switch disposed in a MOF connection container of the MOF unit of FIG. 1;

FIG. 5 is a perspective view schematically showing a configuration of a V-phase disconnector and a grounding switch arranged in a MOF connection container of the MOF unit of FIG. 1;

FIG. 6 is a cross-sectional view illustrating another configuration example of the MOF unit according to the present invention.

FIG. 7 is a cross-sectional view showing still another configuration example of the MOF unit according to the present invention.

8 is a side view showing a cross section of a MOF connection container portion of the MOF unit of FIG. 7 and showing an internal configuration thereof.

FIG. 9 is a single-line diagram showing a configuration example of a gas insulated switchgear having a regular standby two-line power receiving 1MOF configuration.

FIG. 10 is a circuit diagram showing a configuration example of an MOF.

FIG. 11 is a single-line diagram showing a configuration example of an MOF unit used in a gas insulated switchgear having a normal standby two-line power receiving 1MOF configuration.

FIG. 12 is a single-line diagram showing a configuration example of an MOF unit used for a gas insulated switchgear installed in a substation that performs loop power reception.

FIG. 13 is a single-line diagram showing another configuration example of the MOF unit used for the gas insulated switchgear installed in a substation that performs loop power reception.

FIG. 14 is a top view showing a configuration of a conventional MOF unit.

FIG. 15 is an enlarged sectional view taken along line AA of FIG. 14;

FIG. 16 is an enlarged sectional view taken along line BB of FIG. 14;

FIG. 17 is an enlarged sectional view taken along line CC of FIG. 14;

[Explanation of symbols]

 Reference Signs List 10 MOF body 50 MOF connection container 51 Lower container 53 Upper container 53a First nozzle 53b Second nozzle 56 First bus container 60 Second bus container 65u to 65w Insulation bushing BUS1 Power supply bus BUS2 Load Side bus DSa Power side disconnector ESa Power side ground switch DSb Load side disconnector ESb Load side ground switch DSc MOF bypass disconnector DSd Power bus side disconnector ESd Power bus side ground switch

Claims (3)

[Claims] 1. A power supply-side bus conductor constituting a part of a power supply-side bus, a load-side bus conductor constituting a part of a load-side bus, a power supply-side terminal connected to the power supply-side bus conductor, and the load. MO having load side terminal connected to side bus conductor
An F-body, a power-side disconnector for opening and closing a circuit connecting a power-side terminal of the MOF body and the power-side bus conductor, and a power-side grounding switch for grounding a terminal on the MOF side of the power-side disconnector , A load-side disconnector that opens and closes a circuit that connects between a load-side terminal of the MOF body and the load-side bus conductor, and a load-side grounding switch that grounds the MOF-side terminal of the load-side disconnector MOF for gas insulated switchgear provided with
A MOF connection container comprising: a container main body connected to the MOF main body; and first and second nozzles protruding from the side surface of the container main body to the same side in the horizontal direction; A first busbar container connected to the first nozzle via a first insulating spacer, and a second busbar connected to a second nozzle of the MOF connection container via a second insulating spacer. The power supply side disconnecting switch and the power supply side grounding switch are combined so as to be operated in conjunction with a common operation shaft to form a power supply side composite switch, and the power supply side is provided. A bus conductor and a load-side bus conductor are accommodated in the first bus container and the second bus container, respectively, and the power supply-side composite switch corresponds to the first nozzle in the MOF connection container. Gas insulation characterized by being located in a position MOF unit for switchgear. 2. A power supply-side bus conductor constituting a part of a power supply-side bus, a load-side bus conductor constituting a part of a load-side bus, a power supply-side terminal connected to the power supply-side bus conductor, and the load. MO having load side terminal connected to side bus conductor
An F-body, a power-side disconnector for opening and closing a circuit connecting a power-side terminal of the MOF body and the power-side bus conductor, and a power-side grounding switch for grounding a terminal on the MOF side of the power-side disconnector A gas insulated switchgear comprising a switch, and a MOF bypass disconnector that is connected between the power supply-side bus conductor and the load-side bus conductor and forms a circuit that bypasses the MOF main body when closed. A MOF connection container comprising: a container main body connected to the MOF main body; and first and second nozzles protruding from a side surface of the container main body to the same side in the horizontal direction, and the MOF connection A first bus container connected to a first nozzle portion of the container via a first insulating spacer, and connected to a second nozzle portion of the MOF connection container via a second insulating spacer. A second bus container, The power-side disconnecting switch and the power-side grounding switch are combined so as to be operated in conjunction by a common operation shaft to form a power-side composite switch, and the load-side disconnecting switch and the load-side grounding switch are configured. Are combined so as to be operated in conjunction with a common operation shaft to form a load-side composite switch, wherein the power-supply-side bus conductor and the load-side bus conductor are respectively disposed in the first bus container and in the second bus container. The power supply side composite switch and the load side composite switch respectively correspond to a position corresponding to the first nozzle section and the second nozzle section in the MOF connection container. The MOF bypass disconnecting switch is disposed in the MOF connection container in a state where the disconnecting switch does not interfere with the power supply-side composite switch and the load-side composite switch. M for gas insulated switchgear F unit. 3. A power supply-side bus conductor constituting a part of a power supply-side bus, a load-side bus conductor constituting a part of a load-side bus, a power supply-side terminal connected to the power supply-side bus conductor, and the load. MO having load side terminal connected to side bus conductor
An F-body, a power-side disconnector having one end connected to a power-side terminal of the MOF body, a power-side grounding switch for grounding one end of the power-side disconnector, and one end at the other end of the power-side disconnector. Are connected, the other end is connected to the power supply side bus conductor, a power supply bus side grounding switch that grounds one end of the power supply bus side disconnector, and a load side terminal of the MOF main body. A load-side disconnector having one end connected and the other end connected to the load-side bus conductor, a load-side grounding switch that grounds one end of the load-side disconnector, and the other end of the power-side disconnector and the load side A MOF unit for a gas insulated switchgear comprising: a MOF bypass disconnector that is connected between the bus conductor and forms a circuit that bypasses the MOF body when the circuit is closed. Container body and side surface of the container body And a MOF connection container having first and second nozzle portions protruding to the same side in the horizontal direction, and a first nozzle portion of the MOF connection container connected to the first nozzle portion via a first insulating spacer. A first bus container, and a second bus container connected to a second nozzle portion of the MOF connection container via a second insulating spacer, wherein the power-side disconnector and the power-side grounding switch are provided. And the load side disconnecting switch and the load side grounding switch are interlocked by a common operating axis while the power source side compound switch is configured to be combined so that the switch and the switch are operated in conjunction with a common operating axis. A load-side composite switch is configured so that the power supply bus-side disconnector and the power supply bus-side grounding switch are operated in conjunction with a common operation shaft. Power source bus-side composite switch is configured and the power source-side bus conductor and The load-side bus conductors are respectively housed in the first bus container and the second bus container, the power bus-side composite switch is disposed in the first bus container, The load-side composite switches are respectively disposed at positions corresponding to the first nozzle portion and the second nozzle portion in the MOF connection container, and the MOF bypass disconnector is connected to the power supply. A MOF unit for a gas insulated switchgear, wherein the MOF unit is disposed in the MOF connection container in a state where the combined switch and the load-side combined switch do not interfere with each other.