JPS5928814A - Gas insulated switching device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field of the Invention The present invention relates to a gas insulated switchgear that facilitates the loading and unloading of component equipment and reduces the space required for loading and unloading.

[Technical background of the invention and its problems] Gas insulated switchgears are becoming larger and larger as the demand for electricity increases, but at the same time, gas insulated switchgears are becoming more and more popular, such as on land in urban areas and in buildings. Therefore, further reduction is required. The gas-insulated switchgear consists of a combination of equipment such as a pipe busbar, gas breaker, disconnector, and grounding device, and each of these equipment is housed in a gas-tight container for each J45 aircraft and interconnected. It is structured as a body. Therefore, the space required for gas insulated switchgear is:
This includes the projected area of the installed component assembly, the loading/unloading space for component devices such as circuit breakers and disconnectors, and inspection space.

[Purpose of the invention]

The purpose of the present invention is to provide a gas-insulated switchgear system that facilitates the loading and unloading of component equipment, reduces the overall required space by reducing the loading/unloading space, and eliminates drowsy interference with the loading/unloading device. We are in the process of providing equipment.

[Summary of the Invention] The present invention provides a gas-insulated switchgear configured to move loading/unloading equipment on a rail provided on the upper surface of a circuit breaker as a component, and in which electrical insulation is provided in the middle of the rail. It is related to.

[Embodiments of the invention]

Hereinafter] Examples of the present invention shown in the drawings will be described. 1st
In the figure and FIG. 2, the gas-insulated switchgear is constructed by installing a gas-sealed busbar 2 in a substation, and using the gas-sealed square wire 2 to form a transmission line connection unit, a transformer connection unit, etc. Component connectors 3 are electrically and mechanically connected and arranged in parallel. Since each row of the component connectors 3 is substantially the same, the arrangement of the components will be explained using the rightmost column of the component connectors 3 shown in FIG. 2 as a representative. In FIG. 2, a horizontal gas breaker 10 is horizontally arranged on the floor 4 of a substation 1, and its bus-side end is connected to a bus-side grounding device ll, a bus-side current transformer 12, and a bus-side disconnector 13 to The cable head 18 is connected to the sealed busbar 2, and its line side end is connected to the cable bed 18 via the line side current transformer 14, line side disconnector 15, grounding device 16, and capacitor type instrument transformer 17. It is led out to the railway via 'Firka Caple 19.

As shown in FIG. 1, in each column of component equipment connectors 3, some equipment is omitted in some units;
It has a common configuration in which a gas breaker 10 is horizontally arranged in the center, one side end is connected to the bus bar through other equipment, and the other side end is connected to the cable head 18 through each equipment. Moreover, the gas circuit breakers IO in each row are installed so as to occupy the same width W at the same height II. In gas-insulated opening/closing installation in which a plurality of rows of component device connectors 3 are installed in this manner, space for moving the device in and out for expansion and inspection of the intermediate portion, and space for rotating the device are required.

In the present invention, a pair of parallel rail mounting members 20.degree. 20 are provided in advance on the upper surface of each row of gas circuit breakers 10, and a ceiling shell 6 is also mounted on the ceiling 5 of the Japanese house 1. If it becomes necessary to move the equipment due to equipment expansion or inspection, use the rail mounting members 20.20 of the breaker IO in each row to move the rails 21.21 of one end as shown in Figure 1. Attach. When installing this rail 21.21, the rail 21.21 may be
In order to prevent the induced current from flowing, the rails 21a and 21b are connected by a connecting portion 23 via an insulating plate 22, as shown in FIG. That is, appropriate longitudinal sections of the rail 21 are electrically insulated by the insulating plates 22.

The breaker 10' to be moved for loading and unloading is, as shown in Fig. 3, lifted by a C chain block or the like using a ceiling mount 6 and placed on a rail 21.21 via rollers 24.24. The rail 21.21 is rolled and moved in a predetermined direction, and when it reaches a predetermined position, the ceiling backer 6 is used again to move the breaker 10' with a chain block.
Remove the rail from rail 21.21. The circuit breaker lo' is then installed at that location, but inspected internally.

In this case, the height of the substation Kunitachi 5 will increase because the space above each breaker IO of the component assembly 3 in each row is used to move the loading/unloading breaker lo'. However, even in the case of an indoor canopy, the size θZ restriction of a Japanese house is not a particular problem because the floor areas overlap and there are few restrictions in the height direction. Also, depending on the case, it may be necessary to move the equipment in and out while the component assembly 3 in a certain row is energized, but in this case, the middle of the rail 21. Since it is cut off, the occurrence of electrical problems due to the induced wind current is prevented.

Note that the present invention can be implemented not only indoors but also outdoors.

[Effects of the Invention] As described above, according to the present invention, the equipment is moved by using the rails installed above the circuit breakers of the component equipment connectors in each row. There is no need to provide a special space or rotation space, and since the middle of the rail is electrically cut off by an insulator, troubles due to induced current can be prevented.

[Brief explanation of the drawing]

1 and 2 are a plan view and a side view showing an embodiment of the gas insulated switchgear k of the present invention, FIG. 3 is a side view showing the state of the device during movement in the present invention, and FIG. 4 is a main view of the present invention. FIG. 3 is a side view showing the connecting portion of the rail used in the invention. l...Transformation machine Kuniie 2...Gas sealed busbar 3.
・Structure full device connection body 4...floor 5...ceiling
6...Ceiling break 10...Gas breaker
lO'-...Mobile equipment 20...v-le attachment part t, I
21...Rail 22/Rail insulation
23...Rail connecting member (8733) Agent: Yoshiaki Inomata, patent attorney (and 1 other person) Figure 1/Figure 2

Claims (1)

[Claims] (1) Construct multiple rows of connected components by connecting devices such as breakers, disconnectors, and current transformers along a coaxial line, and connect these multiple rows of connected devices to each row of circuit breakers. The rails are arranged in parallel so that they occupy the same height and a predetermined width, and the rails laid on the top surface of the circuit breakers in each row are used when carrying in and out the equipment of the component equipment assembly in each row. 1. A gas-insulated switchgear, characterized in that the rail is electrically cut off by an insulating material midway in the longitudinal direction of the rail.