JPH0556523A - High voltage distribution system for building - Google Patents

Abstract

PURPOSE:To realize a high voltage distribution system for building requiring no cable penetrating through respective floors nor a cable shaft. CONSTITUTION:High voltage power is fed through a high voltage distribution main conductor 15 and a bushing 16 disposed in one of high voltage sealed distribution panels 14-1-14-n to a high voltage main conductor 15 disposed in other high voltage sealed distribution panels 14-1-14-n of the upper or lower floors. The connection is repeated sequentially.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to high-voltage power distribution equipment used in buildings and the like, and more particularly to high-voltage power distribution equipment that does not use a cable for the main line of the high-voltage power distribution.

[0002]

2. Description of the Related Art For example, a conventional high-voltage power distribution facility for a building described in Japanese Patent Publication No. 61-8645 will be described with reference to FIGS. FIG. 3 is a sectional view showing the structure of a conventional high-voltage power distribution facility for buildings, and FIG. 4 is a single-line connection diagram of the conventional high-voltage power distribution facility for buildings.

In FIG. 3, the building 1 is provided with a cable shaft (vertical space) portion 13 for passing a cable 12 for a high-voltage power distribution main trunk line on all floors. The cable shaft portion 13 of each floor 2 is provided with an opening 2a through which the cable 12 passes. Generally, a power receiving room 3 is provided on the lowest floor of the building 1 (for example, a basement), and the power receiving room 3 is provided with a special high voltage power receiving closed switchboard 4 and a special high voltage power (which can be supplied inside a normal building). A main current transformer 5 for stepping down to a high voltage, a transformer secondary high voltage closed switchboard 6 and the like are provided. Opening 13 of cable shaft 13 on each floor
A transformer 7 connected to the cable 12 via the cable connector 11 is provided in a. The transformer device 7 includes a transformer primary switch 8, a transformer 9 for stepping down the high voltage power from the cable 12 to a low voltage, a transformer secondary low voltage switchgear 10, and the like.

[0004]

As described above, in the conventional high-voltage power distribution equipment for buildings, since the main line of the high-voltage power distribution is composed of the cable 12, the cable shaft portion 13 for arranging the cable 12 through each floor is provided. And the cable terminal work for connecting the cable 12 and the transformer 7 provided on each floor must be carried out on each floor, so that there are many construction points and the construction is complicated. Had a point.

The present invention has been made to solve the above problems, and is for a building that enables high-voltage power distribution without using a cable penetrating each floor and a cable shaft for arranging the cable. The purpose is to obtain high voltage distribution equipment.

[0006]

The high-voltage power distribution equipment for buildings according to the present invention is provided in the same place on each floor, and has a high-voltage closed switchboard having a height almost the same as the height from the floor to the ceiling of each floor, A bushing that is provided on the ceiling or floor of the closed switchboard, connects the other high-voltage closed switchboard provided on the upper floor and / or the lower floor with the high-voltage closed switchboard, and is provided inside the high-voltage closed switchboard, and The high-voltage distribution main trunk conductor connected to the bushing, inside the high-voltage closed distribution board, connected to the high-voltage distribution main trunk conductor, the high-voltage power supplied from the high-voltage distribution main trunk conductor is reduced to a low voltage,
A transformer that supplies low-voltage power to the load distributed on each floor, a ceiling provided on each floor and a floor provided at the same location in the vertical direction, for passing through the bushings provided on the high-voltage closed switchboard. An opening is provided.

[0007]

Operation: The high-voltage power is the high-voltage power distribution main trunk line installed inside one high-voltage power distribution switchboard and another high-voltage power distribution main power line installed inside another high-voltage power distribution switchboard installed on the upper or lower floor by bushing. Supplied to the conductor. By repeating this in order, high-voltage power is supplied to all floors of the building.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A high voltage power distribution facility for buildings according to the present invention will be described with reference to FIGS. 1 and 2 showing a preferred embodiment thereof.
FIG. 1 is a cross-sectional view showing the structure of the high-voltage power distribution equipment for buildings according to the present invention, and FIG. 2 is a single line connection diagram of the high-voltage power distribution equipment for buildings.

In FIG. 1, generally, a power receiving room 3 is provided on the lowest floor of a building 1 (for example, a basement). In the power receiving room 3, a special high voltage power receiving / closing switchboard 4 and a special high voltage power (for a normal building, etc. are used). A main current transformer 5 for stepping down to a high voltage (which can be supplied inside), a secondary high-voltage closed switchboard 6 for the transformer, and the like are provided. An opening 2a through which the through bushing 16 penetrates is provided in a portion of the floor 2 of the building 1 where the high voltage closed switchboards 14-1 to 14-n are provided. The high-voltage closed switchboards 14-1 to 14-n are installed on each floor and have a height almost equal to the floor-to-ceiling height of each floor.
Is provided. A high-voltage distribution main trunk conductor 15 functioning as a high-voltage distribution main trunk is provided inside all the high-voltage closed distribution boards 14-1 to 14-n, and the high-voltage distribution main trunk conductor 15 is connected to a through bushing 16. Further, inside the high-voltage closed switchboard (for example, 14-1) on any floor, there is a transformer primary switch 8, a transformer 9 for lowering the high-voltage current from the high-voltage distribution main trunk conductor 15 to a low voltage, and a secondary transformer. A transformer device such as the low-voltage switchgear 10 is provided.

The special high-voltage power received from the special high-voltage power receiving closed switchboard 4 in the power receiving room 3 from a power company or the like is transferred to the main current transformer 5.
Is reduced to a high voltage (which can be supplied inside a normal building, etc.) by the transformer secondary high-voltage closed switchboard 6 and the high-voltage power distribution inside the high-voltage closed switchboard 14-1 installed on the upper floor. It is supplied to the main conductor 15. The electric power supplied to the high-voltage power distribution main trunk conductor 15 is supplied to the high-voltage power distribution main trunk conductor (not shown for clarity) inside the high-voltage closed switchboard 14-2 on a higher floor via the through bushing 16. By repeating the same operation, high voltage power is supplied to all floors of the building 1.

The high-voltage power supplied to the high-voltage closed switchboard (for example, 14-1) on any floor is supplied to the transformer via the transformer primary switch 8 provided inside the high-voltage closed switchboard (for example, 14-1). 9
Is reduced to low pressure. Further, it is supplied to a load (not shown for obvious reasons) via the transformer secondary low-voltage switchgear 10 and the like.

In the above embodiment, the transformer secondary low-voltage switchgear 10 and the like are housed in the high-voltage closed switchboard (eg 14-1). Only the high voltage distribution main trunk conductor 15, the transformer primary switch 8 and the transformer 9 may be housed.

[0013]

As described above, according to the present invention, since the high-voltage power distribution main trunk line is constituted by the high-voltage power distribution main trunk line conductors provided inside the high-voltage closed switchboard and connected by bushings, the conventional high-voltage power distribution main line is used in each floor. The required cable and cable terminal construction for connecting the cable and the transformer on each floor are no longer required, and the cable shaft for accommodating the cable and the cable terminal, etc.
13 (Fig. 3) is also unnecessary, and the effect is that the building space can be effectively used.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a configuration of high-voltage power distribution equipment for buildings according to the present invention.

FIG. 2 is a single-line connection diagram of the high-voltage distribution facility for the building.

FIG. 3 is a cross-sectional view showing a configuration of a conventional high-voltage power distribution facility for a building.

FIG. 4 is a single-line connection diagram of conventional high-voltage power distribution equipment for buildings.

[Explanation of symbols]

 1: Building 2: Floors on each floor 3: Power receiving room 4: Special high-voltage power receiving closed switchboard 5: Main current transformer 6: Transformer secondary high-voltage closed switchboard 8: Transformer primary switch 9: Transformer 10: Transformer secondary Low-voltage switchgear 14-1 to 14-n: High-voltage closed switchboard 15: High-voltage power distribution main trunk conductor 16: Through bushing

Claims (1)

[Claims] 1. A high-voltage closed switchboard provided at the same place on each floor and having substantially the same height from the floor to the ceiling of each floor; a high-voltage closed switchboard provided on the ceiling or floor of each high-voltage closed switchboard; / Or a bushing connecting another high-voltage closed switchboard provided on the lower floor and the high-voltage closed switchboard, a high-voltage power distribution main trunk conductor provided inside the high-voltage closed switchboard and connected to the bushing, the high-voltage closed switchboard Inside, a transformer device that is connected to the high-voltage power distribution main line conductor, reduces the high-voltage power supplied from the high-voltage power distribution main line conductor to a low voltage, and supplies the low-voltage power to the loads provided dispersedly on each floor. A high-voltage power distribution facility for a building, comprising: an opening provided at the same location in the vertical direction on the ceiling and floor of each floor and through which a bushing provided in the high-voltage closed switchboard penetrates.