JPH05328549A - Insulating gas-filled electric apparatus - Google Patents

Abstract

PURPOSE:To provide an insulating gas-filled electric apparatus the use of which allows the installation space to be reduced. CONSTITUTION:To a three-phase insulated main bus 1 on the A side and a three-phase insulated main bus 2 on the B side, a three-phase insulated bus integrated breaker 3 on the A side and a three-phase insulated bus integrated breaker 4 on the B side are connected, respectively. To a three-phase insulated bus 7 on the power transmission side, a three-phase insulated bus integrated breaker 12 on the power transmission side is connected. An isolated phase type breaker 5 is connected to the three-phase insulated bus integrated breaker 3 on the A side and to the three-phase insulated bus integrating breaker 12 on the power transmission side. To the three-phase insulated bus integrated breaker 12 on the power transmission side, a three-phase insulated type grounding switch 13 is connected.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas-insulated electric device, and more particularly to a structure of a gas-insulated electric device for saving the installation space.

[0002]

2. Description of the Related Art FIGS. 4 and 5 are a plan layout view and a side sectional view showing an example of a conventional gas-insulated electric apparatus, in which 1 is an instep three-phase collective main bus, and 2 is an ot side three-phase. Collective main busbar, 3 is a three-phase collective busbar integrated type disconnector on the instep side, 4 is a three-phase collective busbar integrated type disconnector on the other side, and 5 is a phase separation type circuit breaker,
6 is a transmission line side phase separation type disconnector, and 7 is a transmission line side three-phase collective busbar, all of which are filled with an insulating gas such as SF ₆ gas. Reference numerals 8a and 8b are grounding switches between the breaker and the disconnecting switch, and 9 is a grounding switch on the side of the transmission line, which are built in the disconnecting switch. 10 is an inner conductor, 11
Reference characters a and 11b are spacers that respectively support the internal conductor 10.

The above-mentioned conventional arrangement of the gas-insulated electric equipment is for a 550 Kv gas-insulated electric equipment (hereinafter referred to as GIS). In 550Kv class GIS,
Due to the high voltage, the equipment is large and the bus bar can be a three-phase package type. However, the circuit breaker is a phase-separated type circuit breaker like the phase-separated type circuit breaker 5 due to restrictions such as transportation restrictions. Has been done. Also, the transmission line side three-phase collective bus bar 7 is often long due to the separation dimension of the transmission line anchorage structure, but since it does not need to branch like the main bus bar, it is economical with a smaller diameter than the main bus bar. Things are being used. Therefore, the disconnector on the transmission line side is
A phase separation type is used in accordance with the phase separation type circuit breaker 5 such as the transmission line side phase separation type disconnecting switch 6.

Therefore, the phase separation type circuit breaker 5, the transmission line side phase separation type circuit breaker 6 and the transmission line side three-phase lumped bus bar 7 are separately transported. At the site, the upper side three-phase batch bus integrated type disconnector 3 is connected to the upper side three-phase collective main busbar 1 at the spacer 11b, and the second side three-phase collective busbar integrated type disconnector 4 is connected to the spacer 11b.
Part is connected to the B-side three-phase collective main bus 2, the transmission line-side phase-separated disconnector 6 is connected to the spacer 11a at the transmission-line-side three-phase collective bus 7, and the phase-separated breaker 5 is connected to the spacer. 11a section is connected to the upper side three-phase collective mother connection integrated type disconnecting switch 3 and the transmission line side phase separating type disconnecting switch 6 for assembly.

[0005]

Since the conventional gas-insulated electric equipment is constructed as described above, a space for installing the transmission line side phase separation type disconnector 6 is required, and the installation space is wide, and There was a problem that the number of divisional transportation was large, the transportation cost was high, and the number of local assembly man-hours was also large.

The present invention has been made in order to solve the above-mentioned problems, and a gas-insulated electric device capable of reducing the installation space, reducing the number of divided transportations, and reducing the number of on-site assembly man-hours is provided. The purpose is to get.

[0007]

A gas-insulated electric device according to the present invention comprises a main busbar, a feeder, a main busbar-side three-phase integrated busbar integrated disconnector connected to the main busbar, and a feeder. One that includes a feeder-side three-phase batch bus integrated disconnector, and a phase-separated type circuit breaker connected between the main bus-side three-phase batch bus integrated disconnector and the feeder-side three-phase batch bus integrated disconnector Is.

[0008]

In the present invention, since the disconnecting switch connected to the feeder is constituted by the three-phase collective bus bar integrated disconnecting switch, the number of divided transportations is reduced, the number of on-site assembly man-hours is reduced, and the installation space is saved. Space can be achieved.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. Example 1. 1 and 2 are a plan layout view and a side sectional view of a gas-insulated electric device showing Embodiment 1 of the present invention, respectively, which are the same as or equivalent to the conventional gas-insulated electric device shown in FIGS. 4 and 5. The same reference numerals are given to the parts and the description thereof will be omitted. In the figure, 12 is a transmission line side three-phase collective bus-integrated type disconnector, and 13 is a transmission line side three-phase collective earthing switch.

Here, since the spacer 11b at the end of the transmission line side three-phase integrated busbar integrated type disconnector 12 supports the internal conductor 10, it has a high-voltage charging portion, and the transmission line side three A terminal tank for covering the high-voltage charging section is required when the phase-integrated grounding switch 13 is not attached. That is, the transmission line side three-phase collective type grounding switch 13 is attached by utilizing the originally required grounding space of the terminal tank.

According to the first embodiment, the transmission line side three-phase batch type earthing switch 13 can be assembled and adjusted in advance at the factory integrally with the transmission line side three-phase batch bus integrated type disconnector 12, thereby increasing the number of divided transportations. No local assembly is required.

Further, since the transmission line side three-phase collective bus-integrated disconnector 12 and the transmission line side three-phase collective earthing switch 13 are arranged close to each other, a mechanical interlock is required in the operation mechanism portion. However, it can be easily implemented.

Further, the transmission line side three-phase collective type grounding switch 13
Transmission line side integrated three-phase collective busbar integrated disconnector 1
2, the phase separation type circuit breaker 5 and the transmission line side three-phase batch bus bar 7 will be transported in a divided manner, so that only three transmission line side disconnectors, which were conventionally required three, can be reduced, and the number of divided transportations can be reduced.

Further, the connection work of the disconnector of the transmission line side, which has been conventionally required at the three places of the spacer 11a portion, with the three-phase collective bus line 7 on the transmission line side may be performed at one place of the spacer 11b portion.
The number of assembly work steps can be reduced.

As can be seen by comparing FIGS. 2 and 5, the installation space of the transmission line side phase separation type disconnector 6 in the conventional gas-insulated electric equipment can be omitted, and the installation space can be saved. be able to.

Further, the length of the transmission line side three-phase collective bus bar 7 is shortened by a length corresponding to the transmission line side three-phase collective bus integrated type disconnector 12 so that the cost is reduced and the reliability is improved. The transportation efficiency is further improved.

Embodiment 2. In the first embodiment, since the power line disconnector does not require the loop current switching capability,
Although the transmission line side three-phase batch bus integrated disconnector 12 different from the main bus side disconnector is used, in the second embodiment, the main busside disconnector, that is, the instep and B side three-phase collective bus integrated disconnectors. 18 is used as a disconnector of the transmission line side,
As a 0 ° symmetrical mounting, standard products can be achieved.

Example 3. Third Embodiment FIG. 3 is a side sectional view of a gas-insulated electric device showing a third embodiment of the present invention.
Is a pedestal. In the third embodiment, the transmission line side three-phase collective busbar integrated type disconnector 12 is installed upside down, and the same effect is obtained. Further, the transmission line side three-phase batch bus integrated disconnector 12 can be mounted horizontally, and the instep and B side three-phase batch integrated bus disconnectors 3, 4 can be installed upside down or horizontally, and gas-insulated electrical equipment can be installed. It is possible to adopt a configuration suitable for.

In each of the above-mentioned embodiments, the transmission line is used as the feeder, but the same effect can be obtained even if a transformer, a reactor or the like is used.

[0020]

As described above, according to the present invention, since the feeder-side disconnecting switch is the feeder-side three-phase batch bus-integrated disconnecting switch, the installation space can be reduced, and the number of divided transportations and the number of sites can be reduced. There is an effect that a gas-insulated electric device that can reduce the number of assembling steps can be obtained.

[Brief description of drawings]

FIG. 1 is a plan layout view of a gas-insulated electric device showing a first embodiment of the present invention.

FIG. 2 is a side sectional view of a gas-insulated electric device showing Embodiment 1 of the present invention.

FIG. 3 is a side sectional view of a gas-insulated electric device showing a third embodiment of the present invention.

FIG. 4 is a plan layout view showing an example of a conventional gas-insulated electric device.

FIG. 5 is a side sectional view showing an example of a conventional gas-insulated electric device.

[Explanation of symbols]

 1 Upper side 3 phase collective main bus 2 Second side 3 phase collective main bus 3 Upper side 3 phase collective bus integrated disconnector 4 Original side 3 phase collective bus integrated disconnector 5 Phase separation type circuit breaker 12 Transmission line side 3 phase All-in-one busbar disconnector

Claims (1)

[Claims] 1. A main busbar, a feeder, a main busbar-side three-phase batch busbar integrated disconnector connected to the mainbusbar, a feeder-side three-phase batch busbar integrated disconnector connected to the feeder, A gas-insulated electric device comprising: a main busbar-side three-phase batch bus-integrated disconnector and a feeder-side three-phase batch bus-integrated disconnector.