CN209104798U - An arrangement structure of AC 750kV current limiting reactor - Google Patents

Abstract

The utility model discloses an AC 750kV current-limiting reactor arrangement structure, which comprises a substation side, a current-limiting reactor component and a converter station side, and the current-limiting reactor component is arranged between the substation side and the converter station side; the The current-limiting reactor components include a current-limiting reactor, a coupling capacitor, a grounding switch, and an arrester for the current-limiting reactor. The current reactor is connected in series with the grounding switch, the coupling capacitor is connected in parallel with the current limiting reactor, and the outlet end of the grounding switch is connected with the converter station side. The purpose of the utility model is to provide an AC 750kV current-limiting reactor arrangement structure, which can arrange the 750kV current-limiting reactor and its auxiliary devices in a limited site to reduce the floor space.

Description

An arrangement structure of AC 750kV current limiting reactor

technical field

The utility model belongs to the high-voltage power transmission and transformation technology, and relates to an arrangement structure of an AC 750kV current limiting reactor.

Background technique

After the UHV converter station and the UHV substation are jointly built, the short tie line needs to expand the current limiting reactor in the long term, but the site area is limited. The existing reactor arrangement cannot meet the requirements, so it is necessary to seek a more reasonable arrangement of line reactors.

Utility model content

The purpose of the utility model is to provide an AC 750kV current-limiting reactor arrangement structure, which can arrange the 750kV current-limiting reactor and its auxiliary devices in a limited site to reduce the floor space.

To achieve the above object, the utility model adopts the following technical solutions:

An AC 750kV current-limiting reactor arrangement structure includes a substation side, a current-limiting reactor component and a converter station side, and the current-limiting reactor component is arranged between the substation side and the converter station side; the current-limiting reactor The components include current-limiting reactors, coupling capacitors, grounding switches and arresters for current-limiting reactors. The incoming end of the arresters for current-limiting reactors is connected to the substation side, the arresters for current-limiting reactors are connected to the current-limiting reactors, and the current-limiting reactors are connected to the substation side. The grounding switch is connected in series, the coupling capacitor is connected in parallel with the current limiting reactor, and the outlet end of the grounding switch is connected with the converter station side.

The current limiting reactor assembly also includes a first pillar insulator and a second pillar insulator, the first pillar insulator is arranged between the road and the arrester for the current limiting reactor, the second pillar insulator is arranged between the grounding switch and the road, and the line The cables are sequentially connected across the first column insulator, the arrester for the current limiting reactor, the current limiting reactor, the coupling capacitor, the grounding switch and the second column insulator.

The current limiting reactor is connected in series with the upper terminal and the lower terminal of the coupling capacitor respectively, and the incoming line is led and connected by the lower terminal of the coupling capacitor.

The side of the substation includes the Wucaiwan outlet frame and the Wucaiwan outlet CVT in turn, and the outlet of the substation is drawn out through the Wucaiwan outlet frame and the Wucaiwan outlet CVT across the line.

The side of the converter station includes the converter station CVT, the surge arrester for the converter and the GIS bushing in sequence, and the current limiting reactor components appear sequentially through the converter station CVT, the surge arrester for the converter and the GIS bushing.

Roads are arranged between the substation side and the current limiting reactor assembly, and between the current limiting reactor assembly and the converter station side.

The arrester for the current-limiting reactor is closely arranged with the current-limiting reactor.

Compared with the prior art, the utility model has the following beneficial effects:

The utility model is designed to arrange a 750kV current-limiting reactor and its auxiliary devices in its limited site, which solves the problem of the layout of the current-limiting reactor. Compared with other schemes, the floor space is greatly saved, and the construction workload of the reconstruction work is greatly saved. . Has good social and economic benefits. In the arrangement, the current limiting reactor and the coupling capacitor run in parallel. The utility model adopts the current limiting reactor and the coupling capacitor in parallel with four-split flexible conductors. Save framework and other settings, save construction time. The utility model is designed to arrange a 750kV current-limiting reactor and its auxiliary devices in its limited site, which solves the problem of the layout of the current-limiting reactor. Compared with other schemes, the floor space is greatly saved, and the construction workload of the reconstruction work is greatly saved. .

Description of drawings

Fig. 1 is the electrical wiring schematic diagram front view of the utility model;

Fig. 2 is the floor plan of the utility model;

Figure 3 is a cross-sectional view of the layout of the utility model.

Among them, 1. Substation side; 2. Current limiting reactor assembly; 3. Converter station side; 11. Wucaiwan outlet frame, 12, Wucaiwan outlet CVT, 13, road, 14, first pillar insulator, 15, limit Current reactor, 16, coupling capacitor, 17, grounding switch, 18, second pillar insulator, 19, CVT of converter station, 20, arrester for converter, 21, GIS bushing, 22, arrester for current limiting reactor.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. The embodiments described herein are only a part of the embodiments of the present invention, but not all of the embodiments. . Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

As shown in Figures 1 to 3, an AC 750kV current limiting reactor arrangement structure of the present invention includes a substation side 1, a current limiting reactor assembly 2 and a converter station side 3, and the current limiting reactor assembly 2 is arranged on the substation side Roads 13 are provided between 1 and the converter station side 3 , between the substation side 1 and the current limiting reactor assembly 2 , and between the current limiting reactor assembly 2 and the converter station side 3 .

The substation side 1 includes the Wucaiwan outlet frame 11 and the Wucaiwan outlet CVT12 in turn. The outlet of the substation is drawn out through the Wucaiwan outlet frame 11 and the Wucaiwan outlet CVT12.

The current-limiting reactor assembly 2 includes a first column insulator 14, a current-limiting reactor 15, a coupling capacitor 16, a grounding switch 17, a second column insulator 18, and a surge arrester 22 for the current-limiting reactor. The current-limiting reactor 15 is connected in series with the grounding switch 17. For connection, the coupling capacitor 16 is connected in parallel with the current limiting reactor 15 , and the arrester 22 for the current limiting reactor is arranged in close contact with the current limiting reactor 15 . The first post insulator 14 is provided between the road 13 and the arrester 22 for a current limiting reactor, and the second post insulator 18 is provided between the grounding switch 17 and the road 13 . The cables are sequentially connected across the first column insulator 14 , the arrester 22 for the current limiting reactor, the current limiting reactor 15 , the coupling capacitor 16 , the grounding switch 17 and the second column insulator 18 .

The current limiting reactor 15 is connected in series with the upper terminal and the lower terminal of the coupling capacitor 16 respectively, and the incoming line is led by the lower terminal of the coupling capacitor.

The converter station side 3 sequentially includes a converter station CVT 19 , a surge arrester 20 for the converter, and a GIS bushing 21 . The appearance of the current limiting reactor assembly 2 is led out through the converter station CVT19, the lightning arrester 20 for the converter and the GIS bushing 21 in sequence.

The design principle of the utility model is as follows: according to the limited site conditions, a layout scheme of a 750kV current limiting reactor and ancillary devices is designed. According to the system, under the operating mode in 2020, the tie line between the C converter station and the W750kV substation needs to be equipped with a current limiting reactor to limit the short-circuit current level. Arrange 750kV current-limiting reactors and auxiliary devices in a limited site to reduce the floor space. A 750kV current-limiting reactor and ancillary devices were arranged in an extremely limited site, which solved the problem of the layout of the current-limiting reactor. Compared with other solutions, the floor space was greatly saved, and the construction workload of the renovation work was greatly reduced.

The features of this design utility model:

1. According to the system conditions, when the C converter station and the W substation are in liaison operation after 2020, the current limiting reactor 15 must run at the same time, so there is no need to set a bypass for the wiring.

2. The current limiting reactor and the coupling capacitor run in parallel in the layout. The present design uses the current limiting reactor 15 and the coupling capacitor 16 to be connected in parallel with four-split flexible conductors. Save framework and other settings, save construction time.

3. In the traditional wiring mode without bypass, the current-limiting reactor 15, the coupling capacitor 16, and the arrester 22 for the current-limiting reactor included in the current-limiting reactor system all enter the line from the top. If this wiring method is used in this project.

4. The arrester 22 for the current-limiting reactor is closely arranged with the current-limiting reactor 15, which saves the floor space. The current limiting reactor 15 is connected in series with the upper and lower terminals of the coupling capacitor 16, respectively, and the incoming line is led by the lower terminal of the coupling capacitor. Can cancel the high jump line. Save 1 frame, insulator string and wire. In addition, construction time is reduced. The retrofit of the operating station also saves power outages.

The above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art can still modify or modify the specific embodiments of the present invention. Equivalent replacements, and any modifications or equivalent replacements that do not depart from the spirit and scope of the present invention are all within the protection scope of the claims of the present invention.

Claims (7)

1. An AC 750kV current-limiting reactor arrangement structure, characterized in that: it comprises a substation side (1), a current-limiting reactor assembly (2) and a converter station side (3), and the current-limiting reactor assembly (2) is provided with Between the substation side (1) and the converter station side (3); the current limiting reactor assembly (2) includes a current limiting reactor (15), a coupling capacitor (16), a grounding switch (17) and a limiter The surge arrester (22) for the current limiting reactor, the incoming end of the surge arrester for the current limiting reactor (22) is connected to the substation side (1), the surge arrester for the current limiting reactor (22) is connected to the current limiting reactor (15), and the current limiting reactor (15) is connected in series with the grounding switch (17), the coupling capacitor (16) is connected in parallel with the current limiting reactor (15), and the outlet end of the grounding switch (17) is connected with the converter station side (3). 2. The AC 750kV current-limiting reactor arrangement structure according to claim 1, wherein the current-limiting reactor assembly (2) further comprises a first pillar insulator (14) and a second pillar insulator (18) , the first pillar insulator (14) is arranged between the road (13) and the arrester (22) for the current limiting reactor, the second pillar insulator (18) is arranged between the grounding switch (17) and the road (13), the cable It is sequentially connected across the first column insulator (14), the arrester for current limiting reactor (22), the current limiting reactor (15), the coupling capacitor (16), the grounding switch (17) and the second column insulator (18). 3. The AC 750kV current-limiting reactor arrangement structure according to claim 1, characterized in that: the current-limiting reactor (15) is connected in series with the upper terminal and the lower terminal of the coupling capacitor (16), respectively, and the incoming line is coupled by the coupling capacitor (16). The lower terminal of the capacitor (16) is connected. 4. The arrangement structure of AC 750kV current limiting reactor according to claim 1, characterized in that: said substation side (1) comprises Wucaiwan outlet frame (11) and Wucaiwan outlet CVT (12) in sequence, The outgoing line is led out through the Wucaiwan outlet frame (11) and the Wucaiwan outlet CVT (12). 5. The AC 750kV current-limiting reactor arrangement structure according to claim 1, characterized in that: the converter station side (3) sequentially comprises a converter station CVT (19), a lightning arrester (20) for the converter and The appearance of the GIS bushing (21) and the current limiting reactor assembly (2) is drawn out through the converter station CVT (19), the lightning arrester for the converter (20) and the GIS bushing (21) in sequence. 6. The AC 750kV current-limiting reactor arrangement structure according to claim 1, characterized in that: between the substation side (1) and the current-limiting reactor assembly (2), the current-limiting reactor assembly (2) A road (13) is provided between it and the converter station side (3). 7. The AC 750kV current-limiting reactor arrangement structure according to claim 1, wherein the arrester (22) for the current-limiting reactor is arranged in close contact with the current-limiting reactor (15).