RU223215U1 - High-voltage switchgear for mobile substations - Google Patents

Abstract

The utility model relates to the field of electrical engineering and can be used in mobile and small-sized substations. The technical result consists in ensuring the possibility of transporting a high-voltage switchgear in a general transport size without transferring from the working position to the transport position and without dismantling any elements, and is achieved by the fact that the switchgear includes supporting metal structures, a circuit breaker block, two blocks of disconnector modules -grounding conductors, current transformer block and air inputs. The disconnecting device of the switch and the drive are located along the axes of the switch pole reservoirs, the pipes of which on the side of the disconnecting device are parallel to each other, and on the other side of the switch poles are also parallel to each other. The modules of the disconnector-grounding switches on the side of the disconnecting device are parallel to each other, and the modules of the disconnector-grounding switches on the other side of the switch poles are parallel. On at least four air inlets, additional connecting corner modules are used to further change the angle of inclination of the air inlets. 4 salary f-ly, 6 ill.

Description

The utility model relates to the field of electrical engineering and can be used in mobile and small-sized substations.

There is a known technical solution for placing a high-voltage three-phase switchgear in a phase-by-phase design of gas volumes on a trailer (platform) in accordance with the Chinese industrial design patent CN201330292652.3 (published on June 25, 2014), which includes high-voltage bushings, one block of current transformers, one block of disconnector-grounding switch modules, a block of voltage transformers.

The disadvantage of this design is the need to limit the number of modules of a high-voltage switchgear: the device contains only one block of current transformers and one block of grounding switch modules. With an increase in the number of modules, the height and width of the high-voltage switchgear do not allow it to be transported in the required transport size without additional manipulations, and the limitation in the number of modules (one block of grounding switch modules instead of two) does not correspond to the recommended main circuit diagrams.

There is a known technical solution, described in the Chinese patent for invention CN106532533A (published on March 22, 2017), for placing a high-voltage three-phase switchgear in a phase-by-phase design of gas volumes on a trailer (platform), which includes high-voltage bushings, one block of current transformers, one block modules of disconnector-grounding switches, block of voltage transformers. The connection of the high-voltage switchgear with other elements of the mobile substation (for example, a power voltage transformer) is made using a flexible or rigid busbar.

The disadvantage of this technical solution is the need to transfer the high-voltage switchgear from the transport position to the working position (bringing and moving the poles at an angle to each other), since in the working position, as can be seen in the drawings, it goes beyond the transport dimensions of the platform. Accordingly, this technical solution does not allow transporting a high-voltage switchgear in the required transport dimensions without additional actions.

The objective of this technical solution is to create a design for a high-voltage switchgear that allows it to be transported in a general transport envelope without being transferred from the working position to the transport position, without dismantling any elements, as well as with a second block of grounding switch modules installed in this envelope and, if necessary, the second block of current transformers.

The task is achieved by changing the layout of the switch block elements and introducing additional connecting corner modules.

The technical result of the claimed utility model is achieved by changing the arrangement of the elements of the switch block, such as the disconnecting device and the drive, which makes it possible to reduce the height of the supporting metal structures, which leads to a reduction in the height of the entire high-voltage switchgear.

The introduction of additional connecting corner modules allows you to change the angle of inclination of the air inputs, which makes it possible to arrange groups of elements consisting of a branch pipe of the circuit-breaker poles, the corresponding current transformer and a disconnector-grounding module, parallel to each other (axes A1, A2, A3 passing through the center of the branch pipe poles of the circuit breaker, the center of the corresponding current transformer and the center of the corresponding module of the disconnector-grounding switch are parallel to each other, unlike the prototypes), while the rotation of the outermost additional connecting corner modules around the axes A1, A3 provides the required insulation distance between the different phases of the high-voltage switchgear. Thus, the proposed design makes it possible to reduce the final size of the high-voltage switchgear.

The essence of the technical solution is illustrated by drawings, where:

in fig. 1 shows a general side view of a high-voltage switchgear, designed with additional connecting corner modules at all air inputs and a block of voltage transformers;

in fig. 2 shows a general view of the high-voltage switchgear from the front, designed with additional connecting corner modules at all air inputs and a voltage transformer block;

in fig. 3 shows a general view of a high-voltage switchgear from above (a) and from the side (b) in a design with additional connecting corner modules at all air inputs and a block of voltage transformers as part of a modular mobile substation;

in fig. 4 shows an isometric projection of a general view of a high-voltage switchgear, designed with additional connecting corner modules at all air inputs and a block of voltage transformers;

in fig. Figure 5 shows the design options for a high-voltage switchgear: with a second block of current transformers and a block of voltage transformers (a), with additional connecting corner modules on all air inputs, with the exception of the air input installed on the middle pole of the circuit breaker on the side opposite to the location of the current transformer block , and with a block of voltage transformers (b).

in fig. Figure 6 shows a general side view of the high-voltage switchgear in the main version.

List of positions on the figures:

1 - supporting metal structures;

2 - switch block;

3 - disconnecting device;

4 - drive;

5 - branch pipes of the switch poles;

6 - block of current transformers;

7 - block of modules of disconnectors-grounding switches;

8 - block of voltage transformers;

9 - additional connecting corner modules;

10 - air inputs;

Axis A - an axis passing through the center of the branch pipe of the switch poles, the center of the corresponding current transformer and the center of the corresponding disconnector-grounding switch module;

Axis B - axis perpendicular to the axis of the circuit breaker pole tanks;

Axis B1 is an axis passing through the center of the branch pipe of the switch poles located on the side of the disconnecting device;

Axis B2 is an axis passing through the center of the branch pipe of the switch poles, located on the side opposite to the disconnecting device.

The high-voltage switchgear includes supporting metal structures 1, a switch block 2 having a disconnecting device 3 located along the axis of the reservoir of the extreme pole of the switch, and a drive 4 located along the axis of the reservoir of the other extreme pole of the switch, branch pipes of the poles of the switch 5, which can be output both parallel to axis B and located at an angle, while axes B1 at the branch pipes of the switch poles located on the side of the disconnecting device are parallel, and also axes B2 at the branch pipes of the switch poles located on the side opposite from the disconnecting device are parallel, transformer block current 6, blocks of disconnector-grounding modules 7, additional connecting corner modules 9, air inputs 10, and in some versions block of voltage transformers 8.

The operating position of the high-voltage switchgear corresponds to its transport position in the standard transport dimensions.

No technical solutions that coincide with the set of essential features have been identified, which allows us to conclude that the utility model complies with the “novelty” patentability condition.

The patentability condition “industrial applicability” was confirmed by the example of the developed design of the gas-filled high-voltage switchgear RUEN-UETM-110 for mobile and small-sized substations.

Claims (5)

1. High-voltage complete switchgear, including supporting metal structures, a circuit breaker block, two blocks of disconnector-grounding switch modules, a block of current transformers, air inputs, characterized in that the circuit breaker disconnecting device and the drive are located along the axes of the circuit breaker pole reservoirs, the circuit breaker pole nozzles with the sides of the disconnecting device are routed parallel to each other, and the branch pipes of the switch poles on the other side of the switch poles are routed parallel to each other, the grounding disconnector modules located on the side of the disconnecting device are parallel, and the grounding disconnector modules on the other side of the switch poles are parallel, at least Additional connecting corner modules are used on four air inlets, providing an additional change in the angle of inclination of the air inlets. 2. High-voltage switchgear according to claim 1, including a second block of current transformers. 3. High-voltage switchgear according to claim 1, in which additional connecting corner modules are used on all air inputs, with the exception of the air input installed on the middle pole of the circuit breaker on the side opposite to the location of the current transformer block. 4. High-voltage switchgear according to claim 1, in which additional connecting corner modules are used on all air inputs, with the exception of two air inputs installed on the extreme poles of the circuit breaker on the side opposite to the location of the current transformer block. 5. High-voltage switchgear according to any one of paragraphs. 1-4, including a block of voltage transformers.