JPS60207407A - 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, and more specifically, it includes a vertical gas circuit breaker, an aerial bushing for connection to a power transmission line, It relates to gas insulated switchgear placed in gas insulated switchyards and substations.

[Prior art]

FIG. 1, FIG. 2, and FIG. 3 each show a conventional device of this kind, and since they are composed of common parts, they will be explained together. In the figure, there is a three-phase collective roof busbar on the side of the vertical gas circuit breaker l.

3, disconnector 4 (, j and 6, earthing switch 79g1 current transformer unit 9, aerial bushing tO for connecting to the power transmission line, connection parts tta, ttb for connecting disconnector 6 and aerial bushing 10, Pneumatic bushing 10 and connection part/
It is composed of pillars 12 that support /a and //b. Note that FIG. 2 shows the device installed inside a building 13.

Conventional devices with the above configuration are those in which the gas circuit breaker l is arranged in a planar manner on one side of the gas circuit breaker l as shown in FIGS. 1 and 2, and the one in which the gas circuit breaker They were arranged in a planar manner on both sides. Therefore, in order to construct a gas-insulated switchyard or substation in which such conventional gas-insulated switchgear is installed, it is necessary to secure a site with a considerable area in plan in the L direction shown in the figure, and in particular, However, when constructing a gas-insulated switchyard or substation in a narrow space or on a slope in a mountainous area, there are drawbacks such as being subject to significant restrictions and requiring a large amount of cost.

[Summary of the invention]

The purpose of this invention is to eliminate the drawbacks of the conventional devices as described above, and the purpose of this invention is to dispose an air bushing in a vertical line above a vertical gas circuit breaker, and to dispose a pneumatic bushing on this vertical line. As a three-dimensional structure equipped with a flow unit and a disconnect switch, it is possible to reduce the planar space required for constructing a gas-insulated switchyard or substation, and it also eliminates the need for connections between each piece of equipment. The present invention provides a gas-insulated switchgear that reduces construction costs for gas-insulated switchyards or substations and lowers the cost of the equipment.

[Embodiments of the invention]

In one embodiment of FIG. 9, an electric line for connecting a vertical gas circuit breaker l to a power transmission line is drawn out in the upper vertical direction at the center of the gas circuit breaker l, and a current transformer unit is connected along this vertical line. )? , a disconnect switch 6 equipped with a grounding switch t, and an air shishing 10 are arranged in sequence above, and on the side of the gas circuit breaker l are a three-phase collective house busbar, 3, and a busbar division disconnector 4 (,!, A grounding switch 7 is arranged.

FIG. 9 shows another embodiment in which most of the equipment is housed in building H, /3, and only the air shishing tO is placed in the outdoor area on the roof of building 13 via the connection part 11. A lightning arrester/4' was installed on the roof of Kensui 13 near Nakashisthing tO.

FIGS. 6 and 7 show examples of gas-insulated switchyards or substations as shown in FIG. S, respectively, of an underground type and a semi-underground type.

〔Effect of the invention〕

As is clear from the above description, the present invention provides a gas-insulated switchgear having a vertical gas circuit breaker, which is more effective when connecting power lines than a gas-insulated switchyard or substation, which is horizontally arranged with a conventional gas circuit breaker as the axis. Since the electrical circuits are stacked on the center vertical line of the gas circuit breaker, the construction site for gas-insulated switchyards and substations can be significantly reduced, reducing construction costs, eliminating connections, and simplifying the configuration. , it is possible to significantly improve economic efficiency.

[Brief explanation of the drawing]

Figures 1 to 3 are schematic elevational views of conventional devices, Figure 9 is a schematic elevational view of an embodiment of the present invention, and Figures 5 to 7.
Each figure is a partially sectional schematic elevational view showing an example of the use of the invention. L... Gas circuit breaker, K, 3... Three-phase batch bus, Q, S
・・Bus bar section disconnector, 6・・Disconnector, 7゜S・・Connection jI
b Switch, Ri...Current transformer unit, tO...Air shishing, ii...Connection, 13...Building, l-Tei...Surge arrester. In each figure, the same reference numerals indicate the same or corresponding parts. Megumi 3 `` N 5 fig.

Claims (2)

[Claims] (1) A vertical gas circuit breaker with an electric line connected to the power transmission line extending vertically upward, and a current transformer unit, disconnector, and air A gas insulated switchgear equipped with a middle bushing and. (2) The gas insulated switchgear according to claim 1, comprising a lightning arrester disposed on the building in the vicinity of the side of the aerial bushing.