CN212137296U

CN212137296U - Alternating current filter group arrangement structure

Info

Publication number: CN212137296U
Application number: CN202020844945.2U
Authority: CN
Inventors: 冯千秀; 丁晓飞; 朱大鹏; 曾捷; 余波; 胡晓; 邹家勇; 李良霄; 李珊珊; 樊艳; 冯川; 孙菡婧
Original assignee: Southwest Electric Power Design Institute Co Ltd of China Power Engineering Consulting Group
Current assignee: Southwest Electric Power Design Institute Co Ltd of China Power Engineering Consulting Group
Priority date: 2020-05-19
Filing date: 2020-05-19
Publication date: 2020-12-11
Anticipated expiration: 2030-05-19

Abstract

The utility model relates to an exchange distribution network field, the utility model discloses an exchange filter group arrangement structure, the utility model provides an exchange filter group arrangement structure, including first condenser and first subassembly, exchange filter distribution device is connected to the inlet wire end of first condenser, and first subassembly is connected to the leading-out terminal, and first subassembly sets up in the long avris of first condenser. The first assembly comprises a first lightning arrester, a second lightning arrester, a resistor, a first reactor, a second reactor and a second capacitor, the first lightning arrester and the resistor are connected in parallel to a wire outlet end of the first capacitor through flexible wires, and the first lightning arrester, the first reactor and the second capacitor are connected in sequence through the flexible wires. The utility model provides an exchange filter group arrangement structure combines filter group type and place to arrange the characteristic, optimizes exchange filter group arrangement mode, practices thrift area.

Description

Alternating current filter group arrangement structure

Technical Field

The utility model relates to an exchange distribution network technical field, especially relate to an exchange filter group arrangement structure.

Background

According to the reactive power balance of the system and the requirement of meeting the harmonic wave at the AC side of the converter station, an AC filter bank and a parallel capacitor bank are arranged in the converter station, and the converter station is one of important components in a +/-800 kV ultrahigh voltage converter station. The AC filtering field accounts for about 30-40% of the whole converter station field. The arrangement of the alternating current filter group directly determines the occupied area of the whole alternating current filter field, directly influences the size of the total plane arrangement of the converter station, and directly determines key factors such as engineering occupied area and investment.

Therefore, the optimization of the group arrangement of the alternating current filters has very important engineering value and research significance for reducing the total occupied area of the extra-high voltage converter station, saving investment and ensuring the smooth development of extra-high voltage direct current engineering.

In conventional engineering, an alternating current filter group is generally arranged in a low mode, fences are arranged on the periphery of the alternating current filter group, and lines are led in from the width direction of a capacitor. According to the system requirements, the reactive compensation device of the converter station consists of filter groups and parallel capacitor groups of different types. The filter groups and the parallel capacitor bank devices of different types and the occupied area are different, local air spaces can appear when the groups of different types are arranged side by side, and the utilization rate of the field is low.

Taking an alternating current filter field of an extra-high voltage converter station as an example, the flat section of an alternating current filter which is arranged conventionally is shown in figures 1-3, and the converter station comprises 11 filter subgroups and 5 groups of parallel capacitors. In the conventional arrangement, the ac filter group is usually arranged in a low-type, and a fence is installed around the ac filter group, and the ac filter group is fed from the width direction of the first capacitor.

As shown in fig. 3, the occupation of the space in the fence of each group in the conventional arrangement is: HP24/36 AC filter fence 36m 32m, BP11/BP13 AC filter fence 45m 32m, HP3 AC filter fence 45m 32m, SC shunt capacitor fence 24m 32 m. The area occupation size is 293m (transverse direction) x166m (longitudinal direction), and the area occupation size is 48638m²。

As can be seen from fig. 3, the different types of ac filter subgroups in the conventional arrangement differ in their equipment and footprint. Although the filter groups of the same type can be arranged adjacently as much as possible, when the alternating current filter groups of different types are arranged side by side, a local vacant field cannot be utilized inevitably. In addition, a large group of buses of the alternating current filter power distribution device adopt GIL (gas insulated metal enclosed transmission line) pipeline incoming lines, and an empty ground is formed at the end part of a filter field.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides an exchange filter group arrangement structure combines filter bank type and place to arrange the characteristic, optimizes exchange filter group arrangement mode, practices thrift area. The utility model provides an alternating current filter group arrangement structure, including first condenser and first subassembly, alternating current filter distribution device is connected to the inlet wire end of first condenser, and the leading-out terminal is connected first subassembly, first subassembly set up in the long avris of first condenser.

Further, the first component comprises a first lightning arrester, a second lightning arrester, a resistor, a first reactor, a second reactor and a second capacitor, the first lightning arrester and the resistor are connected in parallel to a wire outlet end of the first capacitor through a flexible conductor, and the first lightning arrester, the first reactor and the second capacitor are connected in sequence through the flexible conductor; the second capacitor, the second lightning arrester and the second reactor are sequentially connected to form an electrical parallel structure, the low-voltage sides of the second capacitor, the second lightning arrester and the second reactor are connected through a tubular bus, and the high-voltage sides of the second capacitor, the second lightning arrester and the second reactor are electrically connected through a flexible conductor and are connected in parallel to the top of the second lightning arrester.

Further, an arrangement direction formed by the first arrester and the first reactor is parallel to a length direction of the first capacitor, and an arrangement direction formed by the second capacitor, the second arrester and the second reactor is parallel to a length direction of the first capacitor.

Further, the arrangement direction formed by the first reactor and the second capacitor is perpendicular to the length direction of the first capacitor, namely the incoming line direction and the outgoing line direction of the first reactor form an angle of 90 degrees so as to realize two-side connection.

Further, the first reactor, the first lightning arrester and the resistor are respectively arranged in a staggered manner with the second capacitor, the second lightning arrester and the second reactor to save space.

Further, an arrangement direction formed by the resistor, the first arrester, and the first reactor is parallel to a length direction of the first capacitor.

Further, the first component further comprises a current transformer, and the current transformer is arranged at the outlet end of the resistor and/or the second reactor.

Further, the first assembly further comprises a plurality of post insulators, and the tubular bus is arranged on at least two of the post insulators.

The beneficial effects of the utility model reside in that:

the utility model discloses an optimize alternating current filter group arrangement structure, 6 post insulators can be saved to every group wave filter, and the vertical size in more conventional arrangement structure in alternating current filter place reduces 11m, and whole region takes up an area of and reduces 1826m²And the occupied area is saved by about 4 percent. The utility model provides high site utilization has practiced thrift area and engineering investment.

Drawings

FIG. 1 is a floor plan of an AC filter bank in a conventional manner;

FIG. 2 is a cross-sectional view of a conventional AC filter bank;

FIG. 3 is a diagram of an AC filter site layout in a conventional manner;

fig. 4 is a horizontal layout of the ac filter group of the present invention;

FIG. 5 is a cross-sectional view of an AC filter group according to the present invention;

FIG. 6 is a layout diagram of an AC filter site;

reference numerals: 101-first capacitor, 102-first lightning arrester, 103-first reactor, 104-post insulator, 105-resistor, 106-current transformer, 107-second capacitor, 108-second lightning arrester, 109-second reactor, 201-flexible conductor, 202-tube bus and 301-enclosure.

Detailed Description

In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention, i.e., the described embodiments are only some, but not all embodiments of the invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiment of the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the present invention.

This embodiment has proposed an alternating current filter group arrangement structure, on the basis that satisfies fortune dimension and air clear distance, has carried out following optimization to arrangement structure in combination with the site condition:

as shown in fig. 4 to 6, the ac filter group arrangement structure of the present embodiment includes a first capacitor 101 and a first component, an incoming line end of the first capacitor 101 is connected to the ac filter power distribution device, an outgoing line end is connected to the first component, and the first component is disposed on a long side of the first capacitor 101. The first assembly comprises a first lightning arrester 102, a second lightning arrester 108, a resistor 105, a first reactor 103, a second reactor 109 and a second capacitor 107, the first lightning arrester 102 and the resistor 105 are connected in parallel to a wire outlet end of the first capacitor 101 through a flexible conductor 201, and the first lightning arrester 102, the first reactor 103 and the second capacitor 107 are sequentially connected through the flexible conductor 201. The second capacitor 107, the second lightning arrester 108 and the second reactor 109 are connected in sequence to form an electrical parallel structure, the low-voltage sides of the second capacitor 107, the second lightning arrester 108 and the second reactor 109 are connected through a tubular bus 202, and the high-voltage sides are electrically connected through a flexible conductor 201 and are connected in parallel to the top of the second lightning arrester 108. The optimization is realized, the arrangement is clear, 6 post insulators 104 can be saved, and the engineering investment is saved.

Specifically, the arrangement direction formed by the first arrester 102 and the first reactor 103 is parallel to the length direction of the first capacitor 101, and the arrangement direction formed by the second capacitor 107, the second arrester 108, and the second reactor 109 is parallel to the length direction of the first capacitor 101.

More specifically, the arrangement direction formed by the first reactor 103 and the second capacitor 107 is perpendicular to the length direction of the first capacitor 101, i.e., the incoming line direction and the outgoing line direction of the first reactor 103 are at 90 ° for both-side connection.

As shown in fig. 4, the enclosure size of the filter subgroup in this embodiment is 25m (transverse) x52m (longitudinal), as shown in fig. 6, the transverse size is similar to that of the enclosure with SC parallel capacitors, the floor area of the whole ac filter field is 282m (transverse) x166m (longitudinal), the transverse size is reduced by 11m, and the floor area of the whole ac filter field is 46812m²Reduce 1826m²。

In another preferred embodiment of the present invention, the first reactor, the first arrester and the resistor are respectively arranged in a staggered manner with the second capacitor, the second arrester and the second reactor to save space.

In another preferred embodiment of the present invention, the arrangement direction formed by the resistor, the first arrester and the first reactor is parallel to the length direction of the first capacitor to save space.

In another preferred embodiment of the present invention, as shown in fig. 4, the first assembly further includes a current transformer 106, and the current transformer 106 is disposed at the outlet of the resistor 105 and/or the second reactor 109.

In another preferred embodiment of the present invention, as shown in fig. 4, the first assembly further comprises a plurality of post insulators 104, and the tubular bus 202 is disposed on at least two post insulators 104.

In another preferred embodiment of the present invention, the first capacitor 101 is a filter capacitor of HP24/36 type.

The foregoing is illustrative of the preferred embodiments of the present invention, and it is to be understood that the invention is not limited to the precise forms disclosed herein, and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the invention as defined by the appended claims. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element to which the present invention is directed must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; either a wired or wireless connection.

Claims

1. An alternating current filter group arrangement structure is characterized by comprising a first capacitor and a first assembly, wherein the wire inlet end of the first capacitor is connected with an alternating current filter power distribution device, the wire outlet end of the first capacitor is connected with the first assembly, and the first assembly is arranged on the long side of the first capacitor;

the first assembly comprises a first lightning arrester, a second lightning arrester, a resistor, a first reactor, a second reactor and a second capacitor, the first lightning arrester and the resistor are connected in parallel to a wire outlet end of the first capacitor through flexible wires, and the first lightning arrester, the first reactor and the second capacitor are connected in sequence through flexible wires; the second capacitor, the second lightning arrester and the second reactor are sequentially connected to form an electrical parallel structure, the low-voltage sides of the second capacitor, the second lightning arrester and the second reactor are connected through a tubular bus, and the high-voltage sides of the second capacitor, the second lightning arrester and the second reactor are electrically connected through a flexible conductor and are connected in parallel to the top of the second lightning arrester.

2. An arrangement structure of an ac filter bank according to claim 1, wherein an arrangement direction of said first arrester and said first reactor is parallel to a length direction of said first capacitor, and an arrangement direction of said second capacitor, said second arrester and said second reactor is parallel to a length direction of said first capacitor.

3. An arrangement structure of an ac filter small group according to claim 2, wherein an arrangement direction formed by the first reactor and the second capacitor is perpendicular to a length direction of the first capacitor, that is, an incoming line direction and an outgoing line direction of the first reactor are 90 ° so as to be connected on both sides.

4. An arrangement of ac filter subgroup according to claim 2, wherein said first reactor, said first surge arrester and said resistor are interleaved with said second capacitor, said second surge arrester and said second reactor, respectively, to save space.

5. An arrangement structure of AC filter subgroup according to any of claims 1 to 4, characterized in that the arrangement direction formed by said resistor, said first arrester and said first reactor is parallel to the length direction of said first capacitor.

6. An arrangement according to claim 5, wherein said first component further comprises a current transformer, said current transformer being provided at an outlet of said resistor and/or said second reactor.

7. An ac filter bank arrangement according to claim 5, wherein the first component further comprises a plurality of post insulators, the tubular busbar being provided on at least two of the post insulators.