JPH04134129U - gas insulated electrical equipment - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a gas-insulated electrical device that has a simple structure and can effectively utilize the space near the end of an internal conductor. [Structure] The end of the internal conductor 1 is supported by an insulating spacer 4 on the gas container 2 side, and a voltage sensor 5 for voltage detection is embedded in the insulating spacer 4 corresponding to each internal conductor 1. The signal line 6 of the voltage sensor 5 is led out from the end container 3 side of the insulating spacer 4. Gas container 2 with insulating spacer 4
The side is a gas chamber A, but the end container 3 side from which the signal line 6 is drawn out is an atmospheric chamber B. End container 3
does not need to be a pressure vessel.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention relates to gas-insulated electrical equipment such as gas-insulated switchgear.

0002

[Conventional technology]

Figure 4(a) is a cross-sectional diagram showing the schematic structure of the BUS (bus bar) end of a conventional gas-insulated switchgear. It is a front view. In Figure 4(a), 1 is the internal conductor, 2 is the gas container, and 21 is the insulating space. 22 is a buried conductor, 23 is a shield, 24 is an end container, and C and D are gas chambers. Ru.

0003 As shown in Fig. 4(a), the BUS end of the conventional gas insulated switchgear is connected to the internal conductor 1. The embedded conductor 22 of the insulating spacer 21 that supports the insulating spacer 21 penetrates the insulating spacer 21. Therefore, a shield 23 is attached to the embedded conductor 22, and both sides of the insulating spacer 21 are SF ₆ The gas chambers C and D are filled with gas, and the gas container 2 and end container 24 are It is also a pressure vessel.

0004

[Problem that the idea aims to solve]

However, according to the above conventional configuration, the end container 24 side of the insulating spacer 21 is , simply because the embedded conductor 22 penetrates the insulating spacer 21, the shield 23 is For installation, a pressure vessel had to be used as the gas chamber C and the end vessel 24. For example, when installing a voltage sensor for voltage monitoring, as shown in Figure 4(b), In addition, a space must be provided in the end container 25 for installing the voltage sensor 26. Must be. Note that 27 is a terminal box.

[0005] The purpose of this invention is to effectively utilize the space near the end of the internal conductor with a simple structure. It is an object of the present invention to provide a gas insulated electrical device that can be used.

[0006]

[Means to solve the problem] The gas-insulated electrical device of this invention supports the end of the internal conductor on one side of the insulating spacer. A sensor is provided on the insulating spacer or internal conductor. and, The sensor signal line is led out to the other side of the insulating spacer.

[0007]

[Effect]

According to the configuration of this invention, the end of the internal conductor is supported on one side of the insulating spacer. This eliminates the need to fill the other side of the insulating spacer with insulating gas, allowing the sensor to Install it on an insulated spacer or internal conductor, and connect the sensor signal line to the other side of the insulated spacer. This makes it possible to effectively utilize the space near the end of the internal conductor with a simple structure. can be used.

[0008]

【Example】

[First Example] A first example of this invention will be described based on the drawings. FIG. 1 is a sectional view showing the schematic structure of a gas insulated electrical device according to a first embodiment of this invention. In FIG. 1, 1 is an internal conductor, 2 is a gas container filled with SF ₆ , 3 is an end container, 4 is an insulating spacer, 5 is a voltage sensor (embedded electrode) embedded in the insulating spacer 4, and 6 is a voltage This is the signal line of sensor 5.

[0009] This gas insulated electrical equipment has an internal conductor at the BUS end of the gas insulated switchgear. 1 is supported by the gas container 2 side (one side) of the insulating spacer 4, and this insulating spacer A voltage sensor 5 for voltage detection is embedded in the sensor 4 corresponding to each internal conductor 1. and, Lead out the signal line 6 of the voltage sensor 5 from the end of the insulating spacer 4 on the container 3 side (other side). ing. Note that the gas chamber A is located on the gas container 2 side of the insulating spacer 4, but the signal The end container 3 side from which the wire 6 is drawn out forms an atmospheric chamber B.

0010 As described above, according to this embodiment, the end container 3 side of the insulating spacer 4 is connected to the atmospheric chamber B. Therefore, a voltage sensor 5 for voltage detection is provided on the insulating spacer 4, and the atmospheric chamber B is The signal line 6 can be drawn out through the hole, and a space is provided for installing the voltage sensor 5 for voltage detection. The space at the end of the BUS can be used effectively without the need for a separate space. Also, The end vessel 3 need not be a pressure vessel.

[0011] [Second example] FIG. 2 is a sectional view showing the schematic structure of a gas-insulated electric device according to a second embodiment of this invention. be. In FIG. 2, parts corresponding to those in FIG. 1 are given the same reference numerals. This gas-insulated electrical equipment is used for monitoring gas-insulated switchgear and locating accident points. Then, a temperature sensor 8, a pressure sensor 9, a voltage sensor 10, and a light sensor are attached to the insulating spacer 4. Attach the sensor 11 and the acceleration sensor 12, and A terminal block 7 is provided in the air chamber B.

0012 In this embodiment, as in the first embodiment, the end vessel 3 does not need to be a pressure vessel. There is no need for separate space for each sensor 8 to 12, and the space at the end of the BUS is can be used effectively. [Third example] FIG. 3 is a sectional view showing the schematic structure of a gas-insulated electrical device according to the third embodiment of this invention. be. In FIG. 3, parts corresponding to those in FIG. 1 are given the same reference numerals.

[0013] This gas insulated electrical equipment includes a voltage sensor 13 and a voltage sensor 13 at the BUS end of the gas insulated switchgear. and a current sensor 14 to construct an MOF (Measurement Current Transformer) for measuring power. has been completed. The voltage sensor 13 is provided with an insulating spacer as in the first and second embodiments. 4, but the current sensor 14 is not inserted into the current flow path of the internal conductor 1. Ru. Then, the signals from the voltage sensor 13 and the current sensor 14 are transferred to the insulating spacer. 4 is connected to an optical MOF relay box 15 attached to the atmospheric chamber B on the side of the container 3. The optical MOF relay box 15 connects optical fibers from the voltage sensor 13 and the current sensor 14. - It is an optical fiber connector box that is used to relay cables once. Note that 16 is an optical connector.

[0014] As described above, according to this embodiment, similarly to the first and second embodiments, the end container 3 does not need to be a pressure vessel, and a voltage sensor 13 and a current sensor are installed at the BUS end. 14 can be installed, and separate space is required to install the MOF in the middle of the BUS. The space at the end of the BUS can be used effectively.

[0015]

[Effect of the idea]

The gas-insulated electrical device of this invention supports the end of the internal conductor on one side of the insulating spacer. By holding the spacer, there is no need to fill the other side of the insulating spacer with insulating gas. , there is no need to attach a pressure vessel, and there are no sensors for monitoring voltage, current, temperature, etc. Place the sensor on the insulating spacer or internal conductor, and connect the sensor signal line to the other side of the insulating spacer. It is now possible to lead out to the side, making use of the space near the end of the internal conductor with a simple structure. It can be used for.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing the schematic structure of a gas-insulated electrical device according to a first embodiment of the invention.

FIG. 2 is a sectional view showing the schematic structure of a gas-insulated electrical device according to a second embodiment of the invention.

FIG. 3 is a sectional view showing a schematic structure of a gas-insulated electrical device according to a third embodiment of the invention.

FIG. 4 is a sectional view showing a schematic structure of a BUS end of a conventional gas-insulated switchgear.

[Explanation of symbols]

1 Internal conductor 4 Insulating spacer 5 Voltage sensor 6 Signal line 8 Temperature sensor 9 Pressure sensor 10 Voltage sensor 11 Optical sensor 12 Acceleration sensor 13 Voltage sensor 14 Current sensor

Claims (1)

[Scope of utility model registration request] 1. A gas-insulated electrical device in which an end of an internal conductor is supported on one side of an insulating spacer, a sensor is provided on the insulating spacer or the internal conductor, and a signal line of the sensor is led out to the other side of the insulating spacer. Device.