CN212323739U

CN212323739U - Active filter

Info

Publication number: CN212323739U
Application number: CN202021431434.4U
Authority: CN
Inventors: 郭玉辉; 张龙
Original assignee: Taiyuan Dawei Tianjin Technology Co ltd
Current assignee: Taiyuan Dawei Tianjin Technology Co ltd
Priority date: 2020-07-20
Filing date: 2020-07-20
Publication date: 2021-01-08
Anticipated expiration: 2030-07-20

Abstract

The utility model provides an active filter, which comprises a plurality of active filter cases with the same structure; the active filter case comprises a case, a main control board and a power output module, wherein the main control board and the power output module are arranged in the case; the bottom of the shell is provided with parallel guide rails, and one end of the shell is also provided with a sub-interface board; the main control board and the power output module are both connected with the sub-interface board, and the main control board is also connected with the power output module; the filter case is arranged in a groove body of the cabinet, and a mother interface board corresponding to the son interface board is also arranged in the groove body; and the plurality of active filter cases are connected through a mother interface board. Compared with a single cabinet type, the modularized active filter case of the active filter has the advantages that the capacity is improved, and the combination is convenient; and the interface board is matched with the guide rail, so that the installation is convenient.

Description

Active filter

Technical Field

The utility model belongs to the wave filter field especially relates to an active filter.

Background

Harmonics have become a major hazard in power systems. For the quality of the harmonics, there are mainly passive filtering and active filtering. For the filtering effect and the stability of the device, the active filtering is much higher than the passive filtering. The active filtering has a key problem, and the capacity of a single cabinet is low, so that the actual requirement cannot be met. Therefore, better effect can be realized only by adopting a modularized design and integrating a plurality of active filters to work cooperatively.

Disclosure of Invention

In view of the above, the present invention is directed to overcome the above-mentioned drawbacks of the prior art and to provide an active filter.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

an active filter comprises a plurality of active filter cases with the same structure;

the active filter case comprises a case, a main control board and a power output module, wherein the main control board and the power output module are arranged in the case; the bottom of the shell is provided with parallel guide rails, and one end of the shell is also provided with a sub-interface board; the main control board and the power output module are both connected with the sub-interface board, and the main control board is also connected with the power output module;

the filter case is arranged in a groove body of the cabinet, and a mother interface board corresponding to the son interface board is also arranged in the groove body; and the plurality of active filter cases are connected through a mother interface board.

The active filter case comprises a main active filter case and a plurality of auxiliary active filter cases;

furthermore, the power output three phases of the main active filter case and the slave active filter case are respectively in short circuit and connected with a power grid in a bus mode; and the master interface board is provided with an optical fiber jumper, the signal ends of the master active filter case and the slave active filter case are connected through the optical fiber jumper, and the optical fiber jumper is used for transmitting compensation operation reference value information to the slave active filter case.

Furthermore, a display screen is arranged on one surface of the case opposite to the sub-interface board; the display screen is connected with the main control board.

Further, a bottom plate is arranged at the bottom of the machine shell; the main control board and the sub-interface board are both arranged on the bottom board, and the shell covers the bottom board to form the shell.

Furthermore, two rectangular frame supporting beams are arranged in the machine shell, and the machine shell and the bottom plate are fixed on the rectangular frame supporting beams.

Further, the parallel guide rails are arranged on two edges of the bottom plate.

Compared with the prior art, the utility model discloses following advantage has:

compared with a single cabinet type, the modularized active filter case has the advantages that the capacity is improved, and the combination is convenient; and the interface board is matched with the guide rail, so that the installation is convenient.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

fig. 1 is a schematic view of an active filter case according to an embodiment of the present invention;

fig. 2 is a schematic diagram of an active filter case according to an embodiment of the present invention;

fig. 3 is an exploded view of an active filter case according to an embodiment of the present invention.

Description of reference numerals:

1. a housing; 2. a base plate; 3. a sub-interface board; 4. a main control board; 5. a rectangular frame support beam; 6. a display screen mounting position; 201. parallel guide rails; 301. and (6) docking interfaces.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

As shown in fig. 1-3, an active filter includes a plurality of active filter chassis with the same structure; together forming a modular structure.

the power output three phases of the main active filter case and the slave active filter case are respectively in short circuit and connected with a power grid in a bus mode; the signal ends of the main active filter case and the auxiliary active filter case are connected through optical fibers, and the optical fibers are used for transmitting compensation operation reference value information to the auxiliary active filter case;

the active filter body circuit in the active filter case is the prior art and is not in the protection range of the patent. In one embodiment, the main active filter comprises: main control panel, human-computer interface, interface board and power output module, wherein: the main control board is connected with the power output module through optical fibers, the human-computer interface is connected with the main control board, and the interface board is respectively connected with the main control board and the plurality of slave active filters.

The active filter case comprises a case 1, a main control board 4 and a power output module, wherein the main control board 4 and the power output module are arranged in the case 1; the bottom of the machine shell 1 is provided with a parallel guide rail 201, and one end of the machine shell 1 is also provided with a sub-interface board 3; the main control board 4 and the power output module are both connected with the sub-interface board 3, and the main control board 4 is also connected with the power output module;

the filter case is arranged in a groove body of the cabinet, and a mother interface board corresponding to the daughter interface board 3 is also arranged in the groove body; and the plurality of active filter cases are connected through a mother interface board.

The bottom of the machine shell 1 is provided with a bottom plate 2; the main control board 4 and the sub-interface board 3 are both installed on the bottom board 2, and the casing 1 covers the bottom board 2 to form the casing 1. Two rectangular frame supporting beams 5 are arranged in the machine shell 1, and the machine shell 1 and the bottom plate 2 are fixed on the rectangular frame supporting beams 5. The parallel guide rails 201 are disposed on both sides of the base plate 2.

The shell 1 is formed by processing a convex steel plate, three sides of the shell are bent downwards, and the front end of the shell is provided with a display screen mounting position 6; the back end of the casing 1 is blocked by a sub-interface board 3 to form an active filter case, and the sub-interface board 3 is provided with a plurality of docking interfaces 301.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An active filter, characterized by: the active filter cabinet comprises a plurality of active filter cabinets with the same structure;

the active filter case comprises a case (1), and a main control board (4) and a power output module which are arranged in the case (1); the bottom of the machine shell (1) is provided with a parallel guide rail (201), and one end of the machine shell (1) is also provided with a sub-interface board (3); the main control board (4) and the power output module are both connected with the sub-interface board (3), and the main control board (4) is also connected with the power output module;

the filter case is arranged in a groove body of the cabinet, and a mother interface board corresponding to the daughter interface board (3) is also arranged in the groove body; and the plurality of active filter cases are connected through a mother interface board.

2. An active filter according to claim 1, characterized in that: the active filter case comprises a main active filter case and a plurality of auxiliary active filter cases;

the power output three phases of the main active filter case and the slave active filter case are respectively in short circuit and connected with a power grid in a bus mode; and the master interface board is provided with an optical fiber jumper, the signal ends of the master active filter case and the slave active filter case are connected through the optical fiber jumper, and the optical fiber jumper is used for transmitting compensation operation reference value information to the slave active filter case.

3. An active filter according to claim 1, characterized in that: a display screen is also arranged on one surface of the case opposite to the sub-interface board (3); the display screen is connected with the main control board (4).

4. An active filter according to claim 1, characterized in that: a bottom plate (2) is arranged at the bottom of the shell (1); the main control board (4) and the sub-interface board (3) are both arranged on the bottom board (2), and the shell (1) covers the bottom board (2) to form the shell (1).

5. An active filter according to claim 4, characterized in that: two rectangular frame supporting beams (5) are arranged in the machine shell (1), and the machine shell (1) and the bottom plate (2) are fixed on the rectangular frame supporting beams (5).

6. An active filter according to claim 4, characterized in that: the parallel guide rails (201) are arranged on two edges of the bottom plate (2).