JPS63181606A - Gas insulated switchgear - 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 [Field of Industrial Application] The present invention relates to a gas insulated switchgear, and more specifically, the present invention has a circuit breaker connected to at least one bus bar through a disconnector, and The device's operating mechanism is located at ground level, and it relates to gas-insulated switchgear installed in electrical stations such as substations.

[Conventional technology]

Conventionally, as this type of gas insulated switchgear,
There is one described in Publication No. 183904. In addition, Figures 5 to 7 show the 1985 11K, E, 4-type aircraft, and □
Wow. Ka,. 7, Cζ, 7-A shows a conventional gas insulated switchgear in "Mitsubishi all three-phase - linear gas insulated substation", and in the figure, circuit breaker (1), disconnector (2), (3) , earthing switches (4), (5), base a (6), cable head (7), transformer (8), current transformer (9), and other necessary components are each individually filled with SF6 gas. The metal parts were housed in respective metal containers, and predetermined metals were connected to each other via insulating spacers (1o). In addition, a monitoring panel (12) and a circuit breaker operating box (11) are installed in parallel in front of the circuit breaker (1), and the circuit breaker (2), (3)
, earthing switch (4), (5) each operating device (1
3), (14), (15), and (16) are attached directly to the side of each container, and the control cables for controlling each operating device are connected to the monitoring panel (12) by conduit (17), etc. with an arbitrary foot. ) are collected. Unit pace (18
) are in opposition to the front and rear inspection passages (23) and (24). The monitoring panel (12) has a monitoring instrument board (21)
, a simulated busbar (22) are provided, respectively. (19
) is the opening/closing display window.

With the above configuration, it is possible to electrically connect and disconnect within the metal container,
Each disconnector (
2) + (3) and earthing switch (4), (5)
The operating force of each movable contact is transmitted via a sealed shaft attached to the outer surface of the metal container.

On the other hand, the operating force of an operating device attached to the side surface of the metal container, such as the busbar side disconnector operating device (13) in FIG.
Power is transmitted to the hermetic shaft 4' by a power source or a manual power source. Disconnector (2), (3) and earthing switch (4)
, (5) Each of the operating devices (13) to (16) is equipped with a handle insertion slot for manual operation and an opening/closing display window (19), allowing each status display function and direct manual operation. ing.

[Problem that the invention seeks to solve]

The conventional gas insulated switchgear as described above has a complicated structure due to the complicated combination of a large number of containers, resulting in a large device and requiring a large amount of installation space. When measuring the contact resistance of circuit breakers, etc., when inspecting and replacing contacts such as circuit breakers, disconnectors/grounding switches, etc., inspection scaffolding installed between units is required, and piping/structure table alignment is required. The system had become extremely complex, which hindered operability and maintenance.Furthermore, in the event of an equipment accident, the time required for emergency or permanent restoration was also extended. .

This invention was made to solve the above problems, and it simplifies the structure, reduces the installation space, makes maintenance, inspection, and operation easier, improves safety, and improves safety. The purpose of the present invention is to obtain a more reliable gas-insulated switchgear that enables emergency recovery response in the minimum amount of time in the event of an accident.

[Means for solving problems]

The gas-insulated switchgear according to the present invention has a circuit breaker connected to at least one bus bar through a disconnector, and the operation mechanism of the circuit breaker is located at ground level and is identical to the opening of the circuit breaker cylindrical container. Earthing switches for circuit breakers are provided on the sides of the cylindrical container above and below so as to sandwich one disconnector in the direction of the opening.

[Effect]

Contact inspection and replacement of earthing switches, contact resistance and megger measurements of circuit breakers, etc. can be easily performed from the front inspection aisle, and operations can be performed at ground level without interfering with disassembly and assembly of busbars. By centralizing the monitoring system and operation system, the efficiency of maintenance, inspection, and operation is dramatically improved.

[Embodiment] FIGS. 1 to 3 are block diagrams of a bus unit and a main unit showing an embodiment in which the present invention is applied to a feeder unit disposed between a bus bar feeder. 2 is a side view and a front view showing an embodiment of the present invention corresponding to the skeleton shown in FIG. 4, and FIG. 3 is a planar arrangement of the operating device unit.

In FIG. 4, BSI and BS2 are the first and second bus bars, respectively, DSII and DS12 are the first and second bus side disconnectors, respectively, and the first bus BSI and the first bus side disconnector DSII are the first and second bus side disconnectors. By housing them in a common container, a first busbar unit is formed, and a second busbar unit is similarly formed. CB is a circuit breaker;
ESII and ES12 are first and second circuit breaker earthing switches.

In Figures 1 to 3, the main unit (31) placed above the controller unit (30) at ground level is
A circuit breaker arc extinguishing chamber (33) and a circuit breaker connection mechanism (34) are housed in the cylindrical container (32).
4) is the operating device unit) (30) is the circuit breaker operating device (3)
5). 1st. Second bus unit (3
6a) and (36b) are the front surface of the cylindrical container (32),
Openings arranged vertically (37a) + (37b)
These busbar units (3
6a).

(36b) is constructed by housing the busbar and the busbar side disconnector in a common container.

1st. Second circuit breaker inspection earthing switch (38a) +
(asb) corresponds to the fixed side and movable side of the circuit breaker, respectively, and the cylindrical container (32) has a busbar unit) (36a
).

Mounting openings (39a) provided above and below (36b)
).

(39b).

As described above, the skeleton compatible gas insulated switchgear shown in FIG. 4 is constructed. Note that the adjacent similar gas insulated switchgear is the busbar unit (3Sa).

disconnector operating device (40a) for each of the disconnector (36a) and (36b).

(4ob), as shown in FIG. 3, a monitoring equipment block (41) and a control wiring block (42) are housed, and a wiring duct opening (43) is also provided.

Connecting mechanisms (44a) and (44b) are connected to the disconnector operating devices (4oa) and (4ob), respectively.

(45) is the first. Earthing switch for second circuit breaker inspection (38
This is an operating device for a) and (38b). The earthing switch for circuit breaker inspection (3sa), (3sb) is connected to the busbar unit (36a), (36b) by the connecting rod (46).
are connected to each other at the rear, and connected to an operating device (45) by an operating rod (47). To explain this configuration in more detail, the sealing shafts of the earthing switches (38a) and (38b) that drive the contacts in the gas from the outside are perpendicular to the radial direction of the cylindrical container (32) and are on substantially the same plane. An operating link is rotatably attached to the outer surface of the sealed container of each earthing switch (38a), (38b), and the operating links are connected to each other via an operating rod, and one operating link is An operating device (45) provided outside the cylindrical container (32)
) via an operating rod (47). Further, the connecting rod (46) is an opening (37a) in the cylindrical container (32) of the circuit breaker that is connected to the busbar via a disconnector at a position approximately midway between the main busbar and the circuit breaker.

(37b).

In addition, the same reference numerals in FIGS. 5 to 7 indicate corresponding parts.

With the above configuration, power operation can be performed by direct manual operation or remote control of the operator unit (30) from the front inspection passage. In addition, the opening/closing state and the number of openings/closings can be visually checked from the front inspection passageway without opening/closing the door of the operating device unit (30) using the opening/closing display window (19).

〔Effect of the invention〕

As is clear from the above description, the present invention provides a cylindrical container in which a cylindrical container of a circuit breaker connected to at least one busbar via a disconnector is disposed above an operating device unit at ground level. By forming mounting openings for the grounding switch for circuit breaker inspection on the top and bottom of the bus bar and the opening for connecting the disconnector, the structure is simplified and the installation space can be reduced. In addition, maintenance and inspection operations are facilitated, safety is improved, and recovery can be accomplished quickly in the event of an accident.

[Brief explanation of the drawing]

Figures 1 to 4 show an embodiment of the present invention, with Figure 1 being a side view, Figure 2 being a front view, Figure 3 being a partial plan view, and Figure 4 being a partial plan view.
The figure is a skeleton. Figures 5 to 7 show conventional gas insulated switchgear.
The figure is a side view, Figure 6 is a front view, and Figure 7 is (36a), (
36b)... 1st. a second busbar unit (37a);
(37b)...opening, (38a), (38b) -
1st゜Second circuit breaker inspection grounding switch, (39a), (
39b)...Mounting opening, (40a), (40b)
... Disconnector operating device, (45) ... Operating device, (46)
・Connection rod, (47)...operation rod. In each figure, the same reference numerals indicate the same or corresponding parts. Fig. 1 30 f hair unit ηto 32 Mon 1 Tsukasa number 36a, 36b: 71. Second. N1fJl=,
) 37a, 37b 8 Closed 0W 38a, 38b ' 3
9a, 39b - Mounting opening 45 ゛ 1 beak - I'll'l'l retainer 446, continuous mouth/nod 47, Chihii'FD,, do 40a, 40b @ off-road cypress tool 6 figure Pr -) Figure 5 W-, Figure 7 n

Claims (4)

[Claims] (1) In a gas-insulated switchgear having a circuit breaker connected to at least one bus bar through a disconnector, and in which an operating unit of the circuit breaker is located at ground level, the disconnector and the circuit breaker are connected. an opening in the cylindrical container of the circuit breaker, and mounting openings for grounding switches for circuit breaker inspection, which are formed in the same direction as the opening and above and below the opening. A gas insulated switchgear characterized by: (2) The gas insulated switchgear according to claim 1, wherein the mounting opening for the circuit breaker earthing switch is provided close to the opening for the disconnector. (3) The sealed shafts for externally driving the contacts in the gas of the pair of earthing switches for circuit breaker inspection are disposed on substantially the same plane at right angles to the radial direction of the cylindrical container of the circuit breaker, and the An operating link is rotatably attached to the outer surface of the sealed container of each earthing switch for equipment inspection, and is connected to the operating link of each earthing switch via a connecting rod, and one of the operating links is connected to the outside of the cylindrical container. 2. The gas insulated switchgear according to claim 1, which is connected to an operating device provided in the device via an operating rod. (4) The connecting rod is disposed close to the opening of the cylindrical container of the circuit breaker that is connected to the bus through the disconnector at a position approximately midway between the main bus and the circuit breaker. Gas insulated switchgear according to item 3.