JPS6311006A - 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] [Objective of the Invention] (Industrial Application Field) The present invention relates to a gas-insulated system consisting of a disconnector and a manually operated end of a grounding device disposed on the same side of a container housing a disconnection part. Regarding the arrangement of the switchgear.

(Conventional technology) In recent years, due to the safety of substations, rationalization of maintenance and inspection, land acquisition, etc., circuit breakers and disconnectors formed by housing high-voltage conductors in containers filled with insulating gas such as SF and gas have become popular. A gas insulated switchgear constructed by interconnecting various types of equipment has been widely used. Such gas insulated switchgear requires an operating floor for easy self-inspection and equipment operation.

(Problems to be Solved by the Invention) The layout configuration of the prior art is shown in FIGS. 3 and 4. On the same side of the 6-breaker capacity 21, there are
11.29, and each track side disconnector 40. It is constructed by connecting main bus disconnectors 30 and 31. These disconnectors each have an operating device 14.
0a, 30a, and 31a are arranged on the side surface of the disconnector main body, and the mounting side surfaces thereof are arranged in the same direction.

Therefore, the operating floor for operating the track-side disconnect switch 40 is the operating mechanism 30a of the main bus disconnect switch 30, 31.
, 31a, the structure cannot be installed, and a stepladder is required during inspection and operation, which may impede emergency measures.

Therefore, the present invention provides the following advantages: without changing the size of the conventional gas-insulated switchgear, and without changing the basic structure of the equipment.
The purpose is to configure an arrangement for providing a dedicated hookup for inspection, operation, etc. in a gas-insulated switchgear.

[Structure of the invention]

(Means for Solving the Problems and Their Effects) In order to achieve the above object, according to the present invention, one energized body led out from one pole side of each phase interrupting part inside the circuit breaker is branched into two, In a three-phase gas-insulated switchgear using a circuit breaker configured to have three lead terminals including the current-carrying conductor on the other pole side, the three lead terminals are arranged on the same side of the container, and the three lead terminals are arranged on the same side of the container. In a gas-insulated switchgear in which a circuit breaker or grounding device is connected to two outlet terminals, the manual operation mechanism of the connected disconnector or grounding device is arranged alternately, and the manual operation mechanism of the connected disconnector or grounding device is arranged alternately, and the hand of the gas-insulated switchgear is opposite to that of the alternatingly arranged gas-insulated switchgear. The gas insulated switchgear is characterized by arranging the gas insulated switchgear arranged in rows every other device, thereby making it possible to provide a gas insulated switchgear in which a floor can be provided without interfering with other equipment. .

(Embodiment) An embodiment of the present invention in the single line diagram of FIG. 1 will be specifically described below with reference to FIGS. 2 and 3.

In this embodiment, the breaker CB is arranged such that the axis of the container 21 filled with insulating gas is perpendicular to the installation surface. Inside the breaker container 21, the breaker parts 23 for each phase having fixed side and operating side electrodes that can be brought into and out of contact with each other are arranged so that their operating axes are parallel to the axis of the breaker container 21. . The current-carrying conductor 24 of each phase led out from the lower terminal of the breaker part 23 branches into a current-carrying conductor 25 upward inside the breaker container 21, and then connects to a first lead-out terminal provided on the lower side of the breaker container 21. It is derived from 27. The current-carrying conductor 25 branched upward from the current-carrying conductor 24 of each phase is arranged parallel to the axis of the breaker container 21 for each phase.
It is led out from a second output terminal 28 provided above the output terminal 27 of. The first and second lead terminals 27.28 have a main bus 30.31 integrated with a disconnector.
are connected to each other. The current-carrying conductor 26 of each phase led out from the upper terminal of the breaker part 23 is connected to the breaker container 21
The current is led out from the third outlet terminal 29 provided above the second outlet terminal 28 on the side surface of the breaker container 21 through the instrument current transformer 32 arranged above the breaker part 23 in each phase. ing.

In a gas-insulated switchgear in which a disconnector 40 and a grounding device 41 are connected to the outlet terminal 29, and further a cable connection part 42 and an instrument transformer 43 are connected, the circuit breaker container 2
1, all the lead-out directions are the same, and the main bus disconnect switch 30, 31 and the track-side disconnect switch 40 are installed at the lead-out part.
．． In the configuration in which the grounding device 41 is connected, the upper third outlet terminal 29 of the three outlet terminal portions of the circuit breaker container 21
The operating mechanism for the main busbars 30, 3.1 is integrated with the disconnector 40 and the grounding device 41 connected to the circuit breaker 40 and the grounding device 41, and the disconnector connected to the first and second outlet terminals 27.28 of the circuit breaker container 21. By alternately arranging the gas insulated switchgear having a structure in which the above-mentioned gas insulated switchgear is arranged alternately and the gas insulated switchgear in which the operation mechanism is arranged in the opposite direction, it is possible to connect to the third outlet terminal part of the circuit breaker container 21. The operating mechanisms 40a and 41a of the WR circuit device 40 and the grounding device 41 are arranged to face those of the adjacent gas-insulated switchgear, and the first and second operating mechanisms of the circuit breaker container 21 are
The operating mechanisms 30a, 31a of the main bus 30, 31, which are integrated with the disconnect switch connected to the outlet terminal portion of the main bus 30, are also arranged to face those of the other gas-insulated switchgear.

Therefore, as shown in FIG. 2, the disconnector 40 connected to the third outlet terminal portion of the circuit breaker container 21. There are no operating mechanisms for other equipment below the operating mechanisms 40a and 41a of the grounding device 41, and the grounding device 41 is integrated with the disconnector connected to the first and second outlet terminals of the circuit breaker container 21. Main busbar 30.31
A gas insulated switchgear can be created in which there are no operating mechanisms for other equipment above the operating mechanisms 30a, 31a. With the above arrangement, a floor dedicated to operating and inspecting the operating mechanisms 40a and 41a of the disconnecting switch 40 and the grounding device 41 connected to the third outlet terminal portion of the circuit breaker container 21 can be provided. It is possible to provide a gas insulated switchgear that can be installed without any obstruction.

〔Effect of the invention〕

As shown above, according to the present invention, all three openings provided in the circuit breaker container are set in the same direction, a device such as a disconnector is connected to each opening, and the operation Ia!
In order to operate and inspect R safely and accurately, the operation mechanism of the equipment connected to the upper terminals of the three terminals of the circuit breaker case and the three terminals of the circuit breaker case. A dedicated floor can be created by alternately arranging the operating mechanisms of devices connected to the central and lower outlet terminals.
It is possible to provide a three-phase all-in-one gas insulated switchgear with excellent inspection and operability.

[Brief explanation of the drawing]

FIG. 1 is a single line diagram to which the present invention is applied, FIG. 2 is a structural diagram of an embodiment of the present invention, and FIG. 3 is a partial sectional view of the present invention.
FIG. 4 is a diagram of a conventional structure of this type. CB... Circuit breaker 21... Circuit breaker container 2
3... Breaking part 24, 25, 26... Current-carrying conductor 27.28.29... Output terminal 30.31
...Main bus bar 40...Disconnector 41...
Earthing device 42... Cable connection part 40a... Disconnector operating mechanism 41a... Earthing device operating mechanism 30a, 31a... Disconnector operating mechanism 5o... Operation flow agent Patent attorney Noriyuki Ken Yudo Wang Hou Hongwen Figure 2 Figure 3 Figure 4

Claims (1)

[Claims] (1) Each phase shield and disconnection section having a fixed side and a movable side electrode that can move toward and away from each other are stored together in a shield container filled with insulating gas, and each phase disconnection section is housed together. Each phase current-carrying conductor led out from one end of the part is arranged parallel to the container axis within the container, and each phase current-carrying conductor is branched into two, a first and a first conductor, which are provided on the side surface of the container. The main busbar is connected to the first and second lead terminals through disconnectors, and each phase lead out from the other end of the above-mentioned phase connection and disconnection is connected to the first and second lead terminals through disconnectors. The current-carrying conductor is led out from a third outlet terminal section provided on the side surface of the container, and an external outlet terminal section such as a cable grounding section is connected to this third outlet terminal section via a disconnector, a grounding device, etc. In the three-phase all-in-one gas insulated switchgear, the first, second, and third
The outlet terminal portions of are arranged on the same side of the container, and there are a disconnector connected to the outlet terminal portions of FIGS. 1 and 2, a disconnector connected to the third outlet portion, and a grounding device. A gas insulated switchgear characterized in that manual operating mechanisms are arranged alternately with respect to the outlet terminal portion of the container.