JPH04204A - Gas insulated switchgear - Google Patents

Abstract

PURPOSE:To reduce installation area and to perform inspection or the like efficiently by constituting a gas insulated switchgear of a circuit breaker having a joint port on the upper face of a tank, a dual bus, a disconnector having a joint port in the longitudinal direction, a bus connecting the joint port of the circuit breaker, and the like. CONSTITUTION:A tank type circuit breaker 19 containing an interrupting section is installed such that the longitudinal direction thereof is in parallel with the installation face. A dual bus comprising two parallel buses are installed perpendicularly to the longitudinal direction of the circuit breaker 19 and supported on a framework 20. Bus circuit breakers 3a, 3b are fixed above respective buses and connected through a connection bus 22. A joint port 23 is provided on the upper end face at the dual bus side of the circuit breaker 19, and connected three-dimensionally with the joint port 24 at the side of the circuit breaker 18 for the bus circuit breaker 3a through a metering transformer 25 and a connecting bus 21.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a gas insulated switchgear suitable for an ultra-super high voltage substation or a switchyard.

(Prior Art) Gas insulated switchgear is generally used in substations and switchyards installed in large cities or coastal areas for reasons such as preventing salt damage.

An example of a conventional gas insulated switchgear will be described below with reference to the drawings. Fig. 4 is a circuit side view showing the bushing side of a conventional gas insulated switchgear, Fig. 5 is a circuit plan view showing one line segment of the gas insulated switchgear shown in Fig. 4, and Fig. 6 is a circuit side view showing the bushing side of the conventional gas insulated switchgear.
FIG. 2 is a single line diagram showing one line of the gas insulated switchgear shown in the figure.

In FIG. 4, a tank-shaped circuit breaker 1 having a shutoff section inside is installed so that its longitudinal direction is parallel to the installation surface. On the other hand, a double busbar 2 is provided in which two busbars 2a and 2b are arranged in parallel in a direction perpendicular to the longitudinal axis A of the circuit breaker 1, and each busbar 2a,
At the top of 2b are busbar disconnectors 3a and 3b coaxially with axis A.
is provided. The bus disconnectors 3a and 3b each have a connection port coaxially with the axis A, and are installed in a straight line on one side of the circuit breaker 1 via the connection buses 4 and 5 and the meter current transformer 6. A meter current transformer 7 is provided on the other side of the circuit breaker 1.
, disconnector 8, installation switch 9. Bushing 10, lightning arrester 1
1 is provided.

In FIGS. 5 and 6, the portion on the bushing side shown in FIG. 4 is surrounded by a dotted line. On the opposite side of the double busbar 2 from the bushing side, a cable head side having a cable head 15 at its tip is provided in a direction perpendicular to the double busbar 2 with equipment having substantially the same configuration as the bushing side. Control panels 16 and 17 are provided for controlling the respective devices on both the bushing side and the cable head side.

(Problem to be solved by the invention) Recently, difficulty in obtaining land has become a problem when installing substations and switchyards, and it is necessary to reduce the installation area of gas-insulated switchgear as much as possible. . Furthermore, since these substations and switching stations are connected to important power main lines, it is desirable that power outage times due to accident inspections and repairs be as short as possible.

(Objective) The present invention has been made in consideration of the above points, and an object of the present invention is to provide a gas insulated switchgear with a small installation area and an equipment arrangement that allows one inspection etc. to be performed efficiently.

[Structure of the invention]

(Means for Solving the Problems) A gas insulated switchgear according to the first claim of the present invention has a tank shape in which a cutoff part is housed inside, and the longitudinal direction of the cutoff part is parallel to the installation surface. A circuit breaker with a connection port on the top of the tank, a double busbar with two busbars arranged in parallel in a direction perpendicular to the longitudinal direction of the circuit breaker, and a connection to the top of each busbar that makes up the double busbar. a disconnector having a connection port in the longitudinal direction of the circuit breaker; a connection busbar connecting the connection port of the disconnector and the connection port of the circuit breaker; a frame supporting the double busbar; The device is characterized by comprising a control device installed inside the device to control each of the devices.

In the gas insulated switchgear according to the second claim of the present invention, in the gas insulated switchgear according to the first claim, the axis of the double bus bar is located higher than the longitudinal axis of the circuit breaker. It is characterized in that each of the above-mentioned devices is arranged as follows.

(Function) By providing the connection port of the circuit breaker on the upper surface of the circuit breaker, the circuit breaker and other bus-side equipment such as disconnectors are arranged three-dimensionally, and the control device is installed in the space created below the bus.

(Embodiments) Hereinafter, embodiments of the present invention will be described with reference to the drawings, taking the bushing side of a gas insulated switchgear as an example. Note that the same parts as in the conventional example already explained are given the same reference numerals.

1 is a circuit side view showing the bushing side of the gas insulated switchgear according to the present invention, FIG. 2 is a side view of the gas insulated switchgear shown in FIG. FIG. 3 is a circuit plan view showing one line of the gas-insulated switchgear shown in FIG.

The tank-shaped circuit breaker 19, which houses the interrupting part inside, should have its longitudinal direction parallel to the installation surface! i2 is placed. On the other hand, in a direction perpendicular to the longitudinal direction of this circuit breaker 19, a double busbar 2 formed by paralleling two busbars 2a and 2b is provided, and this double busbar 2 is supported by a frame 20. . A bus circuit breaker 3 is installed above each of the bus bars 2a and 2b.
a, 3b are attached, and these are connected to the connection bus 2.
Connected by 2. A connection port 23 is provided on the upper end surface of the circuit breaker 19 on the double bus 2 side, and this connection port 23 and the connection port 24 of the bus disconnector 3a on the circuit breaker 18 side are connected via a meter current transformer 25. They are three-dimensionally connected by a connection bus bar 21. Therefore, the distance t between the circuit breaker 19 and the bus bar 2a
is smaller than t' in the conventional example shown in FIG. Therefore, the installation area of the gas insulated switchgear can be significantly reduced. In addition to the small installation area, the control panel 26 is installed near each device, so inspections and the like can be carried out efficiently.

Furthermore, in this embodiment, each device is arranged so that the axis of the double busbar 2 is higher than the longitudinal axis of the circuit breaker 19, and the circuit breaker inside the circuit breaker 19 is inspected during inspection. It can be easily taken out from the drawer opening 27 without being obstructed by the double bus bar 2.

〔Effect of the invention〕

According to the present invention, it is possible to provide a gas insulated switchgear that has a small installation area and has a device arrangement that allows inspection and the like to be carried out efficiently.

[Brief explanation of drawings]

FIG. 1 is a circuit side view showing the bushing side of the gas insulated switchgear according to the present invention, FIG. 2 is a side view of the gas insulated switchgear shown in FIG. 4 is a circuit plan view showing one line of the gas insulated switchgear shown in FIG. 4, and a circuit side view showing the bushing side of the conventional gas insulated switchgear.
5 is a circuit plan view showing one line segment of the gas insulated switchgear shown in FIG. 4, and FIG. 6 is a single line diagram showing one line segment of the gas insulated switchgear shown in FIG. 4. 1 , 13.19... Circuit breaker, 2... Double busbar. 3a, 3b-busbar disconnector, 4, 5.21, 22・
...Connection busbar. 6, 7.12, 14, 25...Measurement current transformer, 8.
...Disconnector. 9... Switch, 10... Bushing, 11...
・Surge arrester, 15... Cable head, 16, 17,
26...Control panel, 22, 24...Connection port, 27
...Drawer opening. Agent Patent Attorney Noriyuki Chika 4111 Figure 2! ! Figure 3 Figure 3

Claims (2)

[Claims] (1) A circuit breaker that houses a circuit breaker inside, has a tank shape in which the longitudinal direction of the circuit breaker is parallel to the installation surface, and has a connection port on the top surface of the tank, and a direction perpendicular to the longitudinal direction of the circuit breaker. A double busbar consisting of two busbars arranged in parallel, a disconnector connected to the upper part of each busbar constituting the double busbar and having a connection port in the longitudinal direction of the circuit breaker, and a connection of this disconnector. A gas-insulated switchgear comprising: a connection busbar connecting the opening and the connection port of the circuit breaker; a frame supporting the double busbar; and a control device installed inside the frame to control each of the devices. . (2) The gas insulated switchgear according to claim 1, wherein each of the devices is arranged so that the axis of the double busbar is higher than the longitudinal axis of the circuit breaker.