CN218867925U

CN218867925U - Drawer type dynamic reactive power compensation device with main switch

Info

Publication number: CN218867925U
Application number: CN202221964188.8U
Authority: CN
Inventors: 孙文传
Original assignee: Anhui Zhongsheng Electric Power Technology Co ltd
Current assignee: Anhui Zhongsheng Electric Power Technology Co ltd
Priority date: 2022-07-28
Filing date: 2022-07-28
Publication date: 2023-04-14
Anticipated expiration: 2032-07-28

Abstract

The utility model discloses a drawer type dynamic reactive power compensation device with a main switch, which comprises a cabinet body, wherein a bus duct box is arranged on the cabinet body, a plurality of drawers are inserted into one side of the cabinet body, a main switch unit is arranged in the first drawer, and a low-voltage compensation unit is arranged in each drawer except the first drawer; the connection end heads of the low-voltage compensation units are respectively connected with a busbar bridge frame externally connected with the busbar box to form a capacitor compensation branch, and the low-voltage compensation units are connected in parallel; the connection end of the main switch unit is connected with the bus bridge, and the main switch unit is positioned on the main circuit. The low-voltage compensation unit is integrated into a universal drawer by adopting a drawer type application structure, the units operate independently, a plurality of capacitor compensation branches connected in parallel are formed, and meanwhile, the main switch unit is arranged on the main circuit, so that the capacitor compensation branches can be cut off quickly and completely.

Description

Drawer type dynamic reactive power compensation device with main switch

Technical Field

The utility model relates to a low pressure reactive compensation technical field, concretely relates to drawer type dynamic reactive power compensator with main switch.

Background

The components and parts do in proper order in the present low pressure reactive compensation screen cabinet: main bus-upper branch bus-knife switch fuse set (molded case) -lower branch bus-cable (branch line) -fuse (molded case, micro-break) -cable-switching switch-cable-reactor-cable-capacitor. The installation mode that such low pressure reactive power compensator adopted is the inside layering arrangement structure of screen cabinet, and electrified body exposes between each layer components and parts, easily takes place the electric shock accident, and the interval is great, and space utilization is lower, need whole off-line when overhauing to handle, influences the production power consumption problem.

SUMMERY OF THE UTILITY MODEL

In view of the above problems, the applicant has designed a drawer-type low voltage reactive power compensator, application No. 202221463448.3, and based on this patent, the present invention is to provide a drawer-type dynamic reactive power compensator with a main switch to meet the design requirement "the capacitor should set the main switch requirement" of a 20kv station.

In order to realize the above purpose, the utility model discloses a technical scheme be:

a drawer type dynamic reactive power compensation device with a main switch comprises a cabinet body, wherein a bus duct box is installed on the cabinet body, a plurality of drawers are inserted into one side of the cabinet body, a main switch unit is installed in the first drawer, and a low-voltage compensation unit is installed in each drawer except the first drawer; the connection end heads of the low-voltage compensation units are respectively connected with a busbar bridge frame externally connected with the busbar cell box to form a capacitor compensation branch, and the low-voltage compensation units are connected in parallel; the connection end of the main switch unit is connected with the busbar bridge, and the main switch unit is positioned on the main circuit.

Furthermore, the main switch unit comprises a circuit breaker and primary plug-ins connected to two ends of the circuit breaker, and the main switch unit is respectively connected with the busbar bridge and the main bus through the primary plug-ins.

Furthermore, the low-voltage compensation unit comprises a primary plug-in, a fuse, a current transformer, a silicon controlled switching switch, a circuit breaker, an electric reactor and a capacitor which are connected in series in sequence.

Furthermore, a busbar joint end is arranged on the busbar bridge and correspondingly connected with the primary plug-in.

Furthermore, a plurality of T-shaped grooves are uniformly formed in the drawer bottom plate, and the low-pressure compensation unit is adjustably mounted on the T-shaped grooves.

Furthermore, wing plates are symmetrically arranged on the two sides of the drawer up and down, slide rails are symmetrically arranged on the two sides of the cabinet body, and the wing plates are slidably mounted on the slide rails, so that the drawer is slidably mounted on the cabinet body.

Furthermore, six drawer openings for mounting drawers are formed in the cabinet body.

Compared with the prior art, the utility model has the advantages of it is following:

the utility model discloses an applied structure of drawer type, with low pressure compensation unit (fuse-current transformer-silicon controlled rectifier fling-cut switch-moulded case circuit breaker-reactor-condenser) set to a general drawer in, independent operation between unit and the unit, and form a plurality of parallel connection's condenser compensation branch road, install main switch unit (circuit breaker) in lieing in the first drawer on the main circuit simultaneously, possible all excision condenser compensation branch roads rapidly, can satisfy 20kv power station design requirement "the condenser should set up the main switch requirement".

When the whole cabinet is overhauled or the drawer unit is replaced, the controller only needs to be withdrawn from operation, and then the drawer unit is withdrawn, so that the problem that the power utilization in production is affected due to overlong power failure time during field maintenance is solved.

Drawings

Fig. 1 is a schematic diagram of the drawer-type dynamic reactive power compensation device with a main switch of the present invention;

FIG. 2 is a system diagram of a low-pressure compensation unit of the present invention;

fig. 3 is a structural diagram of the drawer-type dynamic reactive power compensation device of the present invention;

fig. 4 is a perspective view of a drawer according to an embodiment of the present invention.

In the figure: 1. a cabinet body; 2. a busway box; 3. a drawer; 4. a low-voltage compensation unit; 5. a busbar bridge; 51. a busbar joint end; 6. a main switch unit; 7. a circuit breaker; 8. a primary plug-in; 9. a fuse; 10. a silicon controlled rectifier switching switch; 11. a current transformer; 12. a capacitor; 13. a reactor; 301. a T-shaped groove; 302. a wing plate; 101. a slide rail.

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It should be understood that the description herein is provided for illustration and explanation of the invention and is not intended to limit the invention.

Example one

As shown in fig. 1-4, a drawer 3 type dynamic reactive power compensation device with a main switch comprises a cabinet body 1, a busway box 2 installed on the cabinet body 1, a plurality of drawers 3 inserted into one side of the cabinet body 1, a main switch unit 6 installed in the first drawer 3, and a low voltage compensation unit 4 installed in each drawer 3 except the first drawer 3; the connection ends of the low-voltage compensation units 4 are respectively connected with a busbar bridge frame 5 externally connected with the busbar box 2 to form a capacitor 12 compensation branch, and the low-voltage compensation units 4 are connected in parallel; the connection end of the main switch unit 6 is connected with the busbar bridge 5, and the main switch unit 6 is positioned on a main circuit.

The utility model discloses an application structure of drawer type, in assembling a general drawer 3 with low pressure compensation unit 4, independent operation between unit and the unit, and form a plurality of parallel connection's condenser 12 compensation branch road, install main switch unit 6 in the first drawer 3 that is located the main circuit simultaneously, possible all excision condenser 12 compensation branch roads rapidly, can satisfy 20kv power station design requirement "condenser 12 should set up the main switch requirement".

As shown in fig. 2, in a specific embodiment of the present invention:

the main switch unit 6 comprises a circuit breaker 7 and primary plug-ins 8 connected to two ends of the circuit breaker 7, and the main switch unit 6 is respectively connected with the busbar bridge 5 and a main bus through the primary plug-ins 8.

The main switch unit 6 (breaker 7) is installed in the first drawer 3 on the main circuit, so that the compensation branch of the capacitor 12 can be cut off completely and quickly.

The low-voltage compensation unit 4 comprises a primary plug-in component 8, a fuse 9, a current transformer 11, a silicon controlled switching switch 10, a circuit breaker 7, a reactor 13 and a capacitor 12 which are sequentially connected in series. Specifically, the components are connected by standard cables.

The low-voltage compensation units 4 (a fuse 9, a current transformer 11, a silicon controlled switching switch 10, a molded case circuit breaker 7, a reactor 13 and a capacitor 12) are integrated into a universal drawer 3, and the units operate independently to form a plurality of capacitor 12 compensation branches connected in parallel.

When the drawer 3 unit is overhauled or replaced in the whole cabinet, the controller is only required to be withdrawn from operation, and then the drawer 3 unit is withdrawn, so that the problem that the power utilization for production is influenced by overlong power failure time during field maintenance is solved.

As shown in fig. 3, the busbar bridge 5 is provided with a busbar joint end 51, and the busbar joint end 51 is correspondingly connected with the primary plug-in unit 8.

As shown in fig. 3, a plurality of T-shaped grooves 301 are uniformly formed in a bottom plate of the drawer 3, and the fuse 9, the current transformer 11, the silicon controlled switching switch 10, the molded case circuit breaker 7, the reactor 13, and the capacitor 12 are adjustably mounted on the T-shaped grooves 301.

The T-shaped groove 301 has functions of adjusting and mounting components, and dissipating heat through air.

Wing plates 302 are symmetrically arranged on the upper and lower sides of the two sides of the drawer 3, sliding rails 101 are symmetrically arranged on the two sides of the cabinet body 1, and the wing plates 302 are slidably mounted on the sliding rails 101, so that the drawer 3 is slidably mounted on the cabinet body 1.

3 both sides of drawer set up pterygoid lamina 302 slidable mounting through the symmetry from top to bottom on the slide rail 101 that the cabinet body 1 bilateral symmetry set up, specifically, the slide rail is the U type, through slide rail formula cartridge design, has improved gliding stability, controls simply, conveniently.

Specifically, the cabinet body 1 is provided with six drawer openings for mounting the drawers 3.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the principles of the present invention may be applied to any other embodiment without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A drawer type dynamic reactive power compensation device with a main switch comprises a cabinet body (1), wherein a bus duct box (2) is installed on the cabinet body (1), and is characterized in that a plurality of drawers (3) are inserted into one side of the cabinet body (1), a main switch unit (6) is installed in the first drawer (3), and a low-voltage compensation unit (4) is installed in each drawer (3) except the first drawer (3);

the connection ends of the low-voltage compensation units (4) are respectively connected with a busbar bridge (5) externally connected with the busbar box (2) to form a capacitor compensation branch, and the low-voltage compensation units (4) are connected in parallel;

the connection end of the main switch unit (6) is connected with the busbar bridge (5), and the main switch unit (6) is positioned on the main circuit.

2. The drawer-type dynamic reactive power compensation device with a main switch according to claim 1, wherein the main switch unit (6) comprises a circuit breaker (7) and a primary plug-in unit (8) connected to two ends of the circuit breaker (7), and the main switch unit (6) is connected with the busbar bridge (5) and the main busbar through the primary plug-in unit (8).

3. The drawer-type dynamic reactive power compensation device with the main switch according to claim 1, wherein the low voltage compensation unit (4) comprises a primary plug-in (8), a fuse (9), a current transformer (11), a thyristor switch (10), a circuit breaker (7), a reactor (13) and a capacitor (12) which are connected in series in sequence.

4. The drawer-type dynamic reactive power compensation device with the main switch according to claim 2 or 3, wherein a busbar joint end (51) is arranged on the busbar bridge (5), and the busbar joint end (51) is correspondingly connected with the primary plug-in (8).

5. The drawer-type dynamic reactive power compensation device with the main switch as claimed in claim 3, wherein a plurality of T-shaped grooves (301) are uniformly arranged on the bottom plate of the drawer (3), and the low voltage compensation unit (4) is adjustably mounted on the T-shaped grooves (301).

6. The drawer-type dynamic reactive power compensation device with the main switch as claimed in claim 1, wherein wings (302) are symmetrically arranged on both sides of the drawer (3) from top to bottom, sliding rails (101) are symmetrically arranged on both sides of the cabinet body (1), and the wings (302) are slidably mounted on the sliding rails (101), so that the drawer (3) is slidably mounted on the cabinet body (1).

7. The drawer-type dynamic reactive power compensation device with a main switch according to claim 1, characterized in that six drawer openings for installing the drawers (3) are arranged on the cabinet body (1).