JP2771399B2 - Gas insulated switchgear - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas insulated switchgear for a substation facility for high demand for private use, and more particularly, to two transformers for an instrument or one transformer for an instrument and a disconnector for a bypass. And a gas insulated switchgear having the same.

[0002]

2. Description of the Related Art Conventionally, gas-insulated switchgears for substation facilities for high demand for private use are known as a one-metering method and a two-metering method because of the difference in the method of measuring the amount of electric power used. The former is configured to be connected to two transformers through one instrument transformer and current transformer after receiving power through two lines, as shown in, for example, Japanese Patent Application Laid-Open No. 1-303002,
Despite increasing the reliability of the power supply as a two-line power supply, private consumers must stop all services when checking or replacing the transformer for current transformers. On the other hand, the latter uses two instrument current transformers as shown in, for example, Japanese Patent Application Laid-Open No. 1-248911, and when one of them is inspected, the power consumption is reduced by the other instrument current transformer. The total stoppage can be prevented by weighing.

FIG. 1 shows a single-line diagram of the latter configuration.
It is shown in FIG.

[0004] The connection conductor 26 is connected between the transformer-side ends of the two power receiving units LU1 and LU2 via the connection unit CU1.
On the other hand, the power receiving-side ends of the transformer units TU1 and TU2 reaching the two transformers TR1 and TR2 are connected by a connection conductor 25 via a connection unit CU2, and between the connection conductors 25 and 26. Two instrument current transformer units P
U1 and PU2 were connected in parallel. Accordingly, the instrumentation transformer / current transformer 13 of the one instrumentation transformer / current transformer unit PU1 is used.
During inspection or replacement, the disconnectors 11 and 14 at both ends of the instrument transformer / current transformer unit PU1 are disconnected from the circuit, and the other instrument transformer / current transformer unit PU2 is disconnected.
Can be connected in the circuit, and private customers do not stop at all.

[0005]

As described above, the total stoppage can be prevented by using the two voltage transformer current transformer units PU1 and PU2, but one voltage transformer / current transformer unit for the instrument can be prevented. This results in a very large gas insulated switchgear as compared with the case of using. That is, when the gas insulated switchgear is configured based on the known technology and based on the single-line diagram shown in FIG. 11, a plan view shown in FIG. 12 is obtained.

Two power receiving units LU1 and LU2 are arranged to face each other, and their transformer-side ends are connected by a connecting conductor 26 via a connecting unit CU1, while the two transformers TR
1 and TR2, the transformer-side units TU1 and TU2 are arranged opposite to each other, and the power-receiving-side ends thereof are connected to each other by a connection conductor 25 via a connection unit CU2. It is configured by being connected with instrumentation transformer / current transformer units PU1 and PU2 having the transformer / current transformer 13. In particular, the transformer and current transformer units PU1, PU2
Since the closed-loop constituent part composed of the connection units CU1 and CU2 is planarly formed on the installation surface, the installation area becomes very large.

An object of the present invention is to provide a gas insulated switchgear having a reduced installation area.

[0008]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a method for connecting between two measuring transformer current transformer units or between one measuring transformer current transformer unit and a bypass disconnecting switch unit. In a gas insulated switchgear connected by a pair of connecting means and connected to the power receiving unit and the transformer side unit via connecting conductors to these connecting means, respectively, the two transformers for a meter are separated by a predetermined distance. A current transformer unit or one instrument transformer / current transformer unit and a bypass disconnecting switch unit are juxtaposed. The two connecting means are provided between the two instrument transformer / current transformer units or one instrument transformer / current transformer. It is characterized by being arranged on the upper and lower two substantially horizontal planes between the unit and the bypass disconnecting switch unit.

[0009]

The gas insulated switchgear according to the present invention, as described above, is a set for connecting between two current transformer / current transformer units or between one current transformer / current transformer unit and a bypass disconnector unit. The connection means are arranged on two upper and lower planes, so the occupied area is reduced and the installation area as a whole is greatly reduced as compared with the conventional case where these are arranged on one horizontal plane. can do.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the embodiments shown in the drawings.

FIG. 6 is a single-line diagram of a privately owned extra high voltage substation facility rewritten in accordance with the configuration of the gas insulated switchgear according to one embodiment of the present invention, and shows two sets of power receiving units LU1 and LU.
2. Since the instrument transformer / current transformer units PU1 and PU2 and the transformer-side units TU1 and TU2 have the same configuration, only one of them will be described.

The power receiving unit LU1 shows a case in which a cable is drawn in. A current transformer 1 is provided on the drawing side of the cable head 2, and a main circuit conductor introduced through the cable head 2 is connected to a circuit breaker through a disconnector 6. 8, and the other end of the circuit breaker 8 is connected to the disconnector 9. Between the cable head 2 and the disconnecting switch 6, one end of a grounding switch 3 whose other end is grounded and the other end of the lightning arrester 4 whose one end is grounded are connected via an arrester disconnecting device 5. Grounding switches 7 and 10 are connected to the circuit breakers of the disconnectors 6 and 9, respectively.
The instrument transformer / current transformer unit PU1 is configured by connecting the disconnectors 11 and 14 and the other ends of the grounding switches 12 and 15 having one end grounded on both sides of the instrument transformer / current transformer 13, respectively. The transformer-side unit TU1 is connected to one end of a circuit breaker 18, the other end of a grounding switch 17 having one end grounded, and the other end of a grounding switch 19 having one end grounded to the other end of the circuit breaker 18. The terminals are connected to each other and connected to the transformer TR1.

The transformer-side ends of both power receiving units LU1 and LU2 are connected by a connecting conductor 26, and similarly, the power-receiving side ends of the transformer units TU1 and TU2 are also connected by a connecting conductor 25. The measuring transformer / current transformer units PU1 and PU2 are connected between the conductors 25 and 26. Further, the transformer and current transformer units PU1 and PU
Between the connection conductors 25 and 26 located between the two, the disconnectors 21 and 23 electrically connected in series and the other end of the grounding switch 22 having one end grounded between the disconnectors 21 and 23 are connected. The connection units CU1 and CU2 are configured. The connection units CU1, CU2 and the transformer / current transformer units PU1, PU2 constitute a closed loop component.

FIG. 1 shows a plan view of an actual gas insulated switchgear constructed based on this circuit diagram. Note that, in FIG. 1, the instrument transformer 13 is actually located directly below the T-shaped branch container 30, but is shifted to the right for convenience.

A connection unit CU1 and CU2 for connecting between the two transformer-current transformer units PU1 and PU2 arranged at a predetermined distance from each other in the center thereof is provided.
As will be described in detail later, the connection unit CU1 is arranged on the upper horizontal plane and the connection unit CU2 is arranged on the lower horizontal plane of the upper and lower substantially horizontal surfaces. For this reason, the installation area can be greatly reduced as compared with the conventional example in which the measuring transformer / current transformer units PU1 and PU2 and the connection units CU1 and CU2 are configured on the same horizontal plane. As will be understood from the description below, the transformer-side units T are provided on both sides of the transformer-current transformer units PU1 and PU2.
U1 and TU2 are arranged, and the power receiving units LU1 and LU2 are arranged on both sides of the U1 and TU2. Therefore, the connection conductor 2 connecting these units to the connection units CU1 and CU2 is provided.
5 and 26 can be arranged on the above-mentioned horizontal plane of the upper and lower two stages, and the overall configuration can be simplified. Although details will be described later, each unit LU1, LU2, TU
1, TU2, PU1 and PU2 are each configured as a vertical surface substantially perpendicular to and parallel to the installation surface, and at one end of the vertical surface in the juxtaposition direction, operation cubicles 51, 52, 61, 62, 71 and 72 are juxtaposed to form a row board configuration. Within each of the operation cubicles, an operation device of a switch such as a circuit breaker, a disconnecting switch, and a grounding switch is configured.

Further, the detailed configuration of the gas insulated switchgear shown in FIG. 1 will be described.
1, the part composed of the transformer unit TU1 and the voltage transformer / current transformer unit PU1 is the same as the part composed of the power receiving unit LU2, the transformer side unit TU2 and the voltage transformer / current transformer unit PU2. The configuration of the portion will be described.

Next, the configuration of the power receiving unit LU1 will be described in detail with reference to FIG. 2, which is a front view taken along the line II-II of FIG.

The circuit breaker 8 disposed on the back of the operation cubicle 51 is formed in a box-shaped vertical container 56, and a pair of outlets formed on the upper and lower sides of the operation cubicle 51 side has an upper pipe 53 and The lower pipes 54 are each connected substantially horizontally. The upper pipe 53 is located on the upper horizontal plane described above, and the disconnector 9 and the grounding switch 10 are formed therein. The lower pipe 54 is located on the lower horizontal plane described above. Constitutes a disconnecting switch 6, a grounding switch 7 and an arrester disconnecting device 5. The upper pipe 53 is connected to the upper bus pipe 31 located in the upper horizontal plane described above, and the upper terminal of the circuit breaker 8 is connected to the upper terminal of the circuit breaker 8 by the connecting conductor 26 disposed in the upper bus pipe 31.
Connected to U1. On the other hand, a vertical lightning arrester 4 is connected to a lower portion of the lower tube 54, and a cable head container 55 is connected to an axial right side of the lower tube 54. The grounding switch 3 and the cable head 2 are formed in the cable head container 55, and the main circuit conductor is insulated and led out of the cable head container 55 through the cable head 2 so as to surround the cable. A current transformer 1 is arranged. In this power receiving unit LU1,
Since the operation cubicle 51 configured to house the operation devices and the like of these switches and the containers 53, 54, 55, and 56 are all located on one vertical plane perpendicular to the installation surface, FIG. Operation cubicles 51 and 61 shown in FIG.
And 71 are reduced in the installation area in the juxtaposition direction.

FIG. 3 is a front view of the transformer-side unit TU1 along the line III-III in FIG.

Inside the power receiving unit LU1, the circuit breaker 18 is formed in a vertical container 58 disposed on the back of the operation cubicle 61, and the upper pipe 57 connected to the upper outlet is as described above. The disconnector 16 and the earthing switch 17 are arranged in the lower horizontal plane, and the upper part accommodates the connection conductor 25 that is located almost directly below the upper busbar 31 shown in FIG. It is connected to the busbar 32. That is, the circuit breakers 8 and 18 are configured by selecting the heights of the gantry 50 and 60 that support the vertical containers 56 and 58 so that the upper busbars 31 and 32 have such a vertical relationship. At the lower outlet of the vertical container 58, a lower pipe 59 which is located below the lower horizontal plane and forms the grounding switch 19 therein is connected, and the transformer T is connected through the lower pipe 59.
R1 is connected. Such a transformer side unit T
In U1, an operation cubicle 61 configured to house the operation devices and the like of the respective switches is arranged on the side of the vertical container 58 opposite to the outlet side, and the operation cubicle 61, the containers 57, and Since both 58 and 59 are arranged so as to be located on another vertical plane perpendicular to the installation surface, it contributes to reducing the installation area in the juxtaposition direction of the operation cubicles 51, 61 and 71. Further, by disposing the transformer-side unit TU1 inside the power receiving unit LU1, the connection conductors 25 and 26 can also be disposed on the above-described two-stage horizontal plane with a simple configuration, and the overall configuration can be simplified.

FIG. 4 is a front view of the instrument transformer / current transformer unit PU1 along the line IV-IV in FIG.

The T-shaped branch vessel 30 connected to the upper bus pipe 31 through the Z-shaped bus pipe 33 shown in FIG. 1 is connected to the vertical communication vessel 35 via the disconnector 11 and the grounding switch 12 formed inside. And is provided on the same horizontal plane as the upper busbar tube 31 shown in FIG. The conductor 26 guided from the upper bus tube 31 shown in FIG. 2 into the T-shaped branch container 30 passes through the communication container 35 and is connected to the instrument transformer for current transformer 13 arranged below the T-shaped branch container 30. It is connected. The lower outlet of the communication container 35 is connected to the T-shaped branch container 30 via the disconnector 14 and the grounding switch 15 formed inside.
Is connected to a T-shaped branch container 34 of the same shape disposed just below the T-shaped branch container 34. The T-shaped branch container 34 is provided on the same horizontal plane as the lower busbar tube 32 shown in FIG. The conductor 25 guided into the T-shaped branch container 34 from the lower busbar tube 32 shown in FIG. 3 passes through the communication container 35 and is connected to the instrument transformer 13. Also in this voltage transformer / current transformer unit PU1, the operation cubicle 71 configured to house the operation devices and the like of the respective switches is connected to the power receiving unit L described above.
U1 and cubicle 51 of transformer-side unit TU1
And the operation cubicle 71
And each of the containers 30, 34 and 35 are disposed so as to be located on another vertical plane perpendicular to the installation surface, so that the installation area in the juxtaposition direction of the operation cubicles 51, 61 and 71 can be reduced. Has contributed to.

FIG. 5 is a side view of the entire structure along the line VV in FIG.

As can be seen from FIG.
The TU1, PU1, LU2, TU2, and PU2 are each formed on a vertical surface that is perpendicular to the installation surface and parallel to each other, and has a reduced width in the juxtaposition direction.
In addition, the connection units CU1 and CU2 of the closed loop configuration unit for connecting between the voltage transformer and current transformer units PU1 and PU2 are
Since the units are arranged in the upper and lower horizontal planes parallel to the installation surface, the units can be juxtaposed and juxtaposed, and the installation area can be reduced in the juxtaposition direction as compared with the case where the units are arranged in the same horizontal plane. Further, the configuration can be simplified as compared with a case where these are configured on one vertical plane. Further, a power receiving unit LU is provided outside the transformer side units TU1 and TU2.
1 and LU2, and the connecting conductors 25 and 26 connecting the units shown in FIG. 6 are arranged on two horizontal planes parallel to the installation surface, so that the overall configuration can be simplified.

FIG. 13 is a circuit diagram of a gas insulated switchgear in a two-circuit loop power receiving system according to another embodiment of the present invention. The difference from the circuit diagram shown in FIG. 6 described above lies in the transformer current transformer units PU1 and PU2, and more specifically, the faulty current detection is provided on the power receiving units LU1 and LU2 side of the transformer current transformer 13. The point is that the current transformer 27 is provided. Other configurations are the same as those in FIG. 6, and the same reference numerals are given to the same components, and detailed description is omitted.

FIG. 7 is a plan view of a gas insulated switchgear configured according to the circuit diagram of FIG. The difference from FIG. 1 which is a plan view of the gas insulated switchgear configured in accordance with the circuit diagram shown in FIG. 6 is that the installation positions of the instrument transformer 13 and the communication container 35 are the operation cubicle 71. The storage container 36 in which the current transformer 27 for detecting an accident current is stored is provided between the facing portion of the T-shaped branch container 30 and the communication container 35 formed thereby. FIG. 8 is a cross-sectional view of the voltage transformer / current transformer unit PU1 along the line VIII-VIII in FIG. 7, and a T-shaped branch vessel connected to the upper bus pipe 31 via the Z-shaped bus pipe 33 shown in FIG. Reference numeral 30 denotes a disconnecting switch 11 and a grounding switch 12, which are located in an upper horizontal plane, and which are connected to an upper outlet of a communication container 35 of the transformer for current transformer unit PU1 via a storage container 36. Have been. The connection conductor 26 guided into the T-shaped branch container 30 from the upper busbar tube 31
5 and connected to the instrument transformer 13 arranged below the storage container 36. The lower outlet of the communication container 35 is located in the lower horizontal plane, and the disconnector 14 and the grounding switch 15 formed therein are the same as those disposed immediately below the T-shaped branch container 30 via the connection bus pipe 37. It is connected to a T-shaped branch container 34 having a shape. Other configurations are the same as those in FIG. 1, and the same components are denoted by the same reference numerals and detailed description will be omitted.

As described above, the gas insulated switchgear in the two-circuit loop power receiving system is similar to the gas insulated switchgear shown in FIG.
And the connection bus tube 37 may be added, and the addition is simple, so that the same effect can be obtained by standardizing the equipment.

FIG. 14 is a circuit diagram of a gas insulated switchgear of the loop power receiving and metering bypass type according to another embodiment of the present invention.

In this loop power receiving / measuring bypass system, the instrument transformer / current transformer unit PU1 shown in FIG. 13 is omitted, and the disconnector 28 and the fault current detecting current transformer 2 are replaced with each other.
7 is connected, and the connection units CU1 and CU2 are omitted, and instead the connection conductor 26 is formed integrally with the connection conductor 26 between the transformer-side ends of the power receiving units LU1 and LU2. 13 and is directly connected between the power receiving sides of the transformer units TU1 and TU2 by a connection conductor 63 integrally formed with the connection conductor 25. Other configurations are the same as those in FIG. The same is true. In this circuit configuration, when replacing the instrument transformer / current transformer 13 of the instrument transformer / current transformer unit PU2, the disconnector 28 of the bypass disconnector unit BU1 is turned on, and both sides of the instrument transformer / current transformer 13 are connected. Disconnector 1
This is performed after opening the switches 1 and 14 and turning on the earthing switches 12 and 15 to ground the transformer for current transformer 13 for the instrument. Measurement cannot be performed during the replacement of the voltage transformer 13 for the instrument, but the power can be supplied through the disconnecting unit BU1 for the bypass, so that a total stoppage can be prevented.

FIG. 9 is a plan view of a gas insulated switchgear configured based on such a circuit diagram.

The connection units CU1 and CU2 are omitted. Instead, the ends of the power receiving units LU1 and LU2 on the transformer side are directly connected to the connection conductor 26 and the connection conductor 64 arranged on the upper horizontal plane. , TU2
Is connected directly by the connection conductors 25 and 63 on the lower horizontal plane between the power receiving side ends of the T-type branch containers 30 and 34.
-Type branch vessels 30 and 34 have a transformer-current transformer unit P
U2, and a bypass disconnector unit BU1 is connected to the other T-shaped branch containers 30, 34.

Also in this embodiment, the connection conductors 63 and 64 of the closed loop component for connecting between the voltage transformer / current transformer unit PU2 and the bypass disconnecting switch unit BU1 have two upper and lower conductors parallel to the installation surface. Since the units are arranged in the horizontal plane, the units can be juxtaposed and juxtaposed as compared with the case where they are arranged in the same horizontal plane, the installation area can be reduced in the juxtaposition direction, and from FIG. 10 which is a side view. As can be seen, each unit LU1, TU1, BU1, LU2, TU
2, PU2 are respectively formed on vertical planes which are perpendicular to the installation surface and parallel to each other to reduce the width in the juxtaposition direction, and the conductors 25, 26 are also two horizontal planes parallel to the installation surface. In this case, the same effect as the previous embodiment can be obtained, for example, the entire installation area can be reduced.

In the above-described embodiment, in the case where the two voltage transformer / current transformer units PU1 and PU2 are provided,
The connection between the transformer side ends of the power receiving units LU1 and LU2 and the power receiving side ends of the transformer side units TU1 and TU2 are connected by connection units CU1 and CU2, respectively. Disconnector unit B for bypass
When U1 is provided, the connection between the transformer-side ends of the power receiving units LU1 and LU2 and the power-receiving side of the transformer units TU1 and TU2 are directly connected by the connection conductors 63 and 64, respectively. In the power receiving unit LU1,
LU2 between the transformer side ends and the transformer side units TU1, T
The connection between the power-receiving-side ends of U2 can be connected to any one of the connection means including the connection units CU1 and CU2 and the connection conductors 63 and 64.

[0034]

As described above, the gas insulated switchgear according to the present invention connects between two current transformer current transformer units or between one current transformer current transformer unit and bypass disconnector unit. The pair of connecting means are arranged on two upper and lower horizontal planes that are substantially parallel to each other, so that the configuration can be simplified and the installation area can be reduced.

[Brief description of the drawings]

FIG. 1 is a plan view of a gas-insulated switchgear according to one embodiment of the present invention.

FIG. 2 is a cross-sectional view of the gas insulated switchgear shown in FIG. 1 taken along the line II-II.

FIG. 3 is a sectional view of the gas insulated switchgear shown in FIG. 1 taken along the line III-III.

FIG. 4 is a cross-sectional view of the gas insulated switchgear shown in FIG. 1 taken along line IV-IV.

5 is a cross-sectional view of the gas insulated switchgear shown in FIG. 1 taken along line VV.

6 is a single-line diagram corresponding to the configuration of the gas-insulated switchgear shown in FIG.

FIG. 7 is a plan view of a gas-insulated switchgear according to another embodiment of the present invention.

8 is a cross-sectional view of the gas insulated switchgear shown in FIG. 7 taken along line VI-VI.

FIG. 9 is a plan view of a gas-insulated switchgear according to still another embodiment of the present invention.

FIG. 10 is a cross-sectional view of the gas insulated switchgear shown in FIG. 9 taken along line VII-VII.

FIG. 11 is a single-line diagram of a general double-metering private extra-high power receiving facility.

FIG. 12 is a plan view of a conventional gas insulated switchgear configured corresponding to FIG.

FIG. 13 is a single-line diagram of the gas-insulated switchgear shown in FIG. 7;

14 is a single-line diagram of the gas-insulated switchgear shown in FIG.

[Explanation of symbols]

 CU1, CU2 connection unit BU1 bypass disconnector unit LU1, LU2 power receiving unit PU1, PU2 voltage transformer current transformer unit TU1, TU2 transformer side unit 8, 18 breaker 13 voltage transformer current transformer 25, 26 connection conductor 31 , 32 Upper busbar pipe 30, 34 T-shaped branch vessel 56, 58 Vertical vessel

──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Kazunori Kashimura 1-1-1, Kokubuncho, Hitachi City, Ibaraki Pref. Hitachi, Ltd. Inside the Kokubu Plant (56) References JP-A-1-303002 (JP, A) JP-A-1-248911 (JP, A) JP-A-5-22816 (JP, A) JP-A-6-105423 (JP, A) JP-A-3-97308 (JP, U) JP-A-2 −37506 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) H02B 13/00-13/075

Claims (10)

(57) [Claims] 1. A gas insulation system comprising two sets of voltage transformer / current transformer units connected by a set of connecting means, and a power receiving unit and a transformer-side unit connected to the connecting means via connecting conductors. In the switchgear, the two instrument transformers and current transformer units are juxtaposed at a predetermined distance from each other, and the two connecting means for connecting the instrument transformers and current transformer units are formed by the two instrument transformers and current transformers. A gas insulated switchgear characterized by being arranged on two upper and lower substantially horizontal planes between unit units. 2. The power receiving unit and the transformer side unit according to claim 1, wherein the power receiving unit and the transformer side unit are respectively arranged on both sides of the transformer for current transformer unit. A connecting conductor for connecting the connecting means and the connecting means, respectively, is disposed on the upper and lower two substantially horizontal surfaces, respectively. 3. The transformer-side unit according to claim 2, wherein one of the connection conductors connecting the power receiving unit and one of the connection means is arranged on the horizontal plane located above, while the transformer-side unit is connected to the power receiving unit. A gas insulated switchgear, wherein the other connecting conductor for connecting the other connecting means to the other connecting means is arranged on the lower horizontal surface. 4. The transformer according to claim 3, wherein the transformer-side units are respectively arranged on both sides of the two-stage transformer and current transformer unit, and the power receiving units are arranged on both sides of the transformer-side unit. A gas insulated switchgear characterized by the following. 5. The apparatus according to claim 2, wherein at least the two transformer current transformer units, the two power receiving units and the two transformer-side units are operating queues.
A gas insulated switchgear having a vehicle, wherein each of these operation cubicles is juxtaposed on one side to form a row board configuration. 6. A single transformer / current transformer unit and a bypass disconnecting switch unit are connected by a pair of connecting means, and the connecting means are connected to the power receiving unit and the transformer side unit via connecting conductors, respectively. In the gas insulated switchgear that is connected, the instrument transformer and current transformer unit and the bypass disconnector unit are juxtaposed at a predetermined distance, and both connecting means are connected to the instrument transformer and current transformer unit. A gas insulated switchgear characterized by being disposed on two upper and lower substantially horizontal planes between bypass disconnecting switch units. 7. The power receiving unit according to claim 6, wherein the power receiving unit and the transformer side unit are arranged on both sides of the voltage transformer / current transformer unit and the bypass disconnecting switch unit, respectively. The gas-insulated switchgear, wherein the connection conductors for connecting the transformer-side unit and the connection means are respectively arranged on the upper and lower two substantially horizontal planes. 8. The transformer unit according to claim 7, wherein one of the connection conductors connecting the power receiving unit and one of the connection means is arranged on the horizontal plane located above, while the transformer-side unit is connected to the power receiving unit. A gas insulated switchgear, wherein the other connecting conductor for connecting the other connecting means to the other connecting means is arranged on the lower horizontal surface. 9. The apparatus according to claim 8, wherein the transformer-side units are respectively arranged on both sides of the instrument current transformer unit and the bypass disconnector unit, and the transformer-side units are arranged on both sides of the transformer-side unit. A gas insulated switchgear comprising a power receiving unit. 10. The apparatus according to claim 7, wherein at least the voltage transformer / current transformer unit, the bypass disconnector unit, the power receiving units, and the transformer side units each have an operation cubicle. A gas-insulated switchgear, wherein each of these operation cubicles is arranged side by side on one side.