CN216775405U

CN216775405U - Anti-interference control box of wind turbine generator

Info

Publication number: CN216775405U
Application number: CN202220520767.7U
Authority: CN
Inventors: 徐超; 朱玉瑞; 蔡春辉; 陈文渊; 谷燕楠
Original assignee: Huaneng Weining Wind Power Co ltd
Current assignee: Huaneng Weining Wind Power Co ltd
Priority date: 2022-03-11
Filing date: 2022-03-11
Publication date: 2022-06-17
Anticipated expiration: 2032-03-11

Abstract

The utility model discloses an anti-interference control box of a wind turbine generator, which comprises a shielding cabinet body consisting of a heat dissipation cabinet body, a first host cabinet body and a second host cabinet body, wherein the first host cabinet body and the second host cabinet body are respectively positioned at the left end and the right end of the heat dissipation cabinet body, heat-conducting metal shielding covers are respectively arranged in the first host cabinet body and the second host cabinet body, a host is arranged in the metal shielding covers, a two-way radiator is arranged in the heat dissipation cabinet body, two-way radiating ends of the two-way radiator are respectively connected with the first host cabinet body and the second host cabinet body through electromagnetic shielding structures, electric connecting terminal seats are respectively arranged at the top of the shielding cabinet body and correspond to the heat dissipation cabinet body, the first host cabinet body and the second host cabinet body, the electric connecting terminal seats are connected with wire harnesses which are vertically and downwards wired, and the lower ends of the anti-interference wire harnesses are electrically connected with the host and the two-way radiator. The utility model can reduce and inhibit the influence of electromagnetic interference on the host and the electronic elements in the control box and ensure the reliable and stable operation of the electronic device in the control box.

Description

Anti-interference control box of wind turbine generator

Technical Field

The utility model relates to the technical field of anti-interference protection of wind turbines, in particular to an anti-interference control box of a wind turbine.

Background

At present, wind generating sets adopted in wind power places are mainly large grid-connected type sets, each set is provided with a control system for acquiring natural parameters and self data and states of the set, and a series of control and protection actions such as starting, stopping, direction adjusting, braking and the like of the set are controlled through calculation, analysis and judgment, so that all automatic control of a single wind generating set can be realized without considering intervention. When these wind turbines with excellent performance are installed in a certain wind farm, it is very important to monitor and manage the operation data, state, action condition of the protection device, fault type, etc. of each wind turbine in a centralized manner. In order to realize the functions, the control system of the lower computer (machine set controller) can communicate the data, the state, the fault condition and the like of the machine set with the upper computer of the central control room through a special communication device and an interface circuit, meanwhile, the upper computer can transmit a control instruction to the lower computer, and the control system of the lower computer executes corresponding actions, so that the remote monitoring function is realized.

According to the actual situation of the wind power plant, the communication between the upper computer and the lower computer has the following characteristics:

1. the upper computer can control the operation of a plurality of wind turbine generators, and belongs to a one-to-many operation mode; the lower computer can independently operate and can communicate with the upper computer;

2. the installation distance between the upper computer and the lower computer is far and exceeds 500M;

3. the installation distance between the lower computers is also far and exceeds 100M;

4. communication software between the upper computer and the lower computer must be coordinated and consistent, and special functions for industrial control should be developed.

Because the wind power plant monitoring system plays an extremely important role in production, the operation efficiency and reliability of the wind turbine generator control system are ensured. The main interference sources thereof have the following aspects:

1) industrial interference: high voltage alternating current electric field, electrostatic field, electric arc, silicon controlled rectifier, etc.;

2) interference in nature: lightning impulse, various electrostatic discharges, magnetic storms, etc.;

3) high-frequency interference: microwave communications, radio signals, radar, etc.

These disturbances enter the wind turbine control system by means of direct radiation or conduction from some electrical circuits, disturbing the stability of the operation of the wind turbine control system.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects in the prior art, the utility model provides an anti-interference control box of a wind turbine generator.

The technical scheme adopted by the utility model for realizing the technical effects is as follows:

an anti-interference control box of a wind turbine generator comprises a shielding cabinet body consisting of a heat dissipation cabinet body, a first main machine cabinet body and a second main machine cabinet body, the first main machine cabinet body and the second main machine cabinet body are respectively positioned at the left end and the right end of the heat dissipation cabinet body, the first main machine cabinet body and the second main machine cabinet body are respectively provided with a heat-conducting metal shielding cover, the main machine is arranged in the metal shielding cover, the heat dissipation cabinet body is internally provided with a two-way radiator, two-way heat dissipation ends of the two-way radiator are respectively connected with the first main machine cabinet body and the second main machine cabinet body through electromagnetic shielding structures, the top of the shielding cabinet body is respectively provided with an electric connection terminal seat at the position corresponding to the heat dissipation cabinet body, the first main machine cabinet body and the second main machine cabinet body, the electric connection terminal seat is connected with an anti-interference wire harness which is vertically wired downwards, and the lower end of the anti-interference wire harness is electrically connected with the host and the two-way radiator.

Preferably, in the anti-interference control case of foretell wind turbine generator system, electromagnetic shield structure includes radiator metal shielding case, interior shielding steel sheet and outer shielding steel sheet, two are established to the main part of radiator in the radiator metal shielding case, interior shielding steel sheet is established the heat dissipation cabinet body left and right sides, it is right to be used for first host computer cabinet body with the second host computer cabinet body cuts off, outer shielding steel sheet is established the outside of interior shielding steel sheet, be equipped with dryer assembly mouth on the outer shielding steel sheet, two pass to the main shaft of radiator interior shielding steel sheet, terminal fan blade is established in the dryer.

Preferably, in the above anti-interference control box for a wind turbine generator system, the outer sides of the first main machine cabinet body and the second main machine cabinet body are provided with loading and unloading ports, the loading and unloading ports are provided with heat dissipation door plates capable of being opened in a vertical sliding manner, and the heat dissipation door plates are provided with waveguide heat dissipation meshes.

Preferably, in the above anti-interference control box of the wind turbine generator system, the ends of the anti-interference wire harnesses corresponding to the first host cabinet body and the second host cabinet body are connected to the host through a pluggable electrical connection socket, and the end of the anti-interference wire harness corresponding to the heat dissipation cabinet body is electrically connected to the bidirectional heat sink.

Preferably, in the anti-interference control box of foretell wind turbine generator system, the bottom of the first host computer cabinet body with the second host computer cabinet body is equipped with linear driving roller, is equipped with the host computer the metal shielding cover is established on the linear driving roller, the first host computer cabinet body with the lateral wall of the second host computer cabinet body is being corresponded the position of anti-interference pencil lower extreme is equipped with the operation window, the operation window is equipped with shielding window board.

Preferably, in the anti-interference control box of foretell wind turbine generator system, the top of the shielding cabinet body comprises double-deck shield plate, the shaping has shielding space between the double-deck shield plate, be equipped with the shielding box in the shielding space, be equipped with in the shielding box with the wave filter that anti-interference pencil is connected.

Preferably, in the above anti-interference control box of the wind turbine generator system, guide rails are disposed on two sides of the first main unit cabinet body and the second main unit cabinet body corresponding to the loading/unloading opening, the heat dissipation door plate is slidably connected to the guide rails, and a plurality of support rods made of a non-magnetic material are disposed in the shielding cabinet body.

The utility model has the beneficial effects that: the anti-interference control box can effectively prevent electromagnetic interference from multiple aspects, reduces and inhibits the influence of the electromagnetic interference on a host and electronic elements in the control box, and ensures the reliable and stable operation of electronic devices in the control box.

Drawings

FIG. 1 is a perspective view of the present invention;

FIG. 2 is an internal structural view of the present invention;

FIG. 3 is a circuit diagram of a power supply terminal filtering anti-jamming circuit in accordance with the present invention;

fig. 4 is a circuit diagram of the signal-side filtering anti-jamming circuit according to the present invention.

Detailed Description

For a further understanding of the utility model, reference will now be made to the following descriptions taken in conjunction with the accompanying drawings and specific examples:

in the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element 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, "first," "second," "third," and "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be further noted that, unless otherwise specifically stated or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, integrally connected, mechanically connected, electrically connected, directly connected, connected through an intermediate medium, or connected through the insides of two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Referring to fig. 1 and fig. 2, as shown in the drawings, an anti-interference control box of a wind turbine generator according to an embodiment of the present invention includes a shielding cabinet 1 composed of a heat dissipation cabinet 11, a first main cabinet 12, and a second main cabinet 13. Wherein, the first main machine cabinet body 12 and the second main machine cabinet body 13 are respectively located at the left and right ends of the heat dissipation cabinet body 11, the first main machine cabinet body 12 and the second main machine cabinet body 13 are respectively provided with a heat-conducting metal shielding cover 100, and the main machine is arranged in the metal shielding cover 100. The heat dissipating cabinet 11 is provided with a bidirectional heat sink 2, and two bidirectional heat dissipating ends of the bidirectional heat sink 2 are respectively connected with the first main cabinet 12 and the second main cabinet 13 through electromagnetic shielding structures. Specifically, as shown in fig. 2, the top of the shielding cabinet 1 is provided with an electrical connection terminal seat 7 at a position corresponding to the heat dissipating cabinet 11, the first host cabinet 12 and the second host cabinet 13, the electrical connection terminal seat 7 is connected with an anti-interference wire harness 8 wired vertically downward, and the lower end of the anti-interference wire harness 8 is electrically connected with the host and the bidirectional heat sink 2.

Further, in a preferred embodiment of the present invention, as shown in fig. 2, the electromagnetic shielding structure includes a radiator metal shielding case, an inner shielding steel plate 3 and an outer shielding steel plate 31, wherein the main body of the bidirectional radiator 2 is disposed in the radiator metal shielding case, and the inner shielding steel plates 3 are disposed at the left and right sides of the heat dissipating cabinet 11 for partitioning the first main cabinet 12 and the second main cabinet 13. The outer shielding steel plate 31 is arranged on the outer side of the inner shielding steel plate 3, an air duct assembly opening is formed in the outer shielding steel plate 31, the two-way radiator 2 is provided with a main shaft penetrating through the inner shielding steel plate 3, the tail end fan blade is arranged in the air duct 4, and the two-way radiator 2 can respectively conduct ventilation and heat dissipation on the metal shielding covers 100 on the two sides, so that heat concentration is avoided.

Further, in the preferred embodiment of the present invention, as shown in fig. 1, the first main unit cabinet 12 and the second main unit cabinet 13 are provided with a loading and unloading opening 15 at the outer side, and the metal shielding case 100 with the main unit can be loaded into the main unit cabinet at the corresponding side through the loading and unloading opening 15. The loading and unloading port 15 is provided with a heat dissipation door plate 16 which can be opened in a vertical sliding manner, the heat dissipation door plate 16 is provided with a waveguide heat dissipation mesh 18, and hot air in the control box can be exhausted through the waveguide heat dissipation mesh 18 on the heat dissipation door plate 16.

Further, in the preferred embodiment of the present invention, as shown in fig. 2, the ends of the anti-interference wire harness 8 corresponding to the first host cabinet 12 and the second host cabinet 13 are connected to the host through the pluggable electrical connection socket 81, and the end of the anti-interference wire harness 8 corresponding to the heat dissipation cabinet 11 is electrically connected to the bidirectional heat sink 2. As shown in fig. 1 and 2, linear driving rollers 17 are disposed at the bottom of the first main machine cabinet 12 and the second main machine cabinet 13, and a metal shielding case 100 with a main machine is disposed on the linear driving rollers 17. When the metal shielding case 100 is moved in or out, the bottom of the metal shielding case 100 is in contact with the linear driving roller 17 corresponding to the bottom of the cabinet of the host machine, so that the metal shielding case 100 provided with the host machine can be conveniently and rapidly moved in or out. In order to facilitate the implementation of subsequent operations, as shown in fig. 1, the side walls of the first main machine cabinet 12 and the second main machine cabinet 13 are provided with operation windows at positions corresponding to the lower ends of the anti-interference wire harnesses 8, the operation windows are provided with shielding window plates 14, and the insertion and extraction operations can be performed on the electrical connection sockets 81 at the ends of the anti-interference wire harnesses 8 by opening the shielding window plates 14.

Further, in the preferred embodiment of the present invention, as shown in fig. 2, the top of the shielding cabinet 1 is formed by two layers of shielding plates, a shielding space is formed between the two layers of shielding plates, a shielding box 6 is arranged in the shielding space, and a filter 9 connected to an anti-interference wire harness 8 is arranged in the shielding box 6. The filter 9 includes a power supply terminal filtering anti-jamming circuit and a signal terminal filtering anti-jamming circuit. As shown in fig. 3, the power supply terminal filtering anti-jamming circuit includes a primary anti-jamming circuit, a secondary anti-jamming circuit, a tertiary anti-jamming circuit, a rectifier bridge and a power transformer connected in sequence, a port safety capacitor CY1, CY2 of the primary anti-jamming circuit lightning protection filter circuit provides a discharge path for common mode interference signals, effectively inhibits the common mode signals from entering the power supply port, a voltage dependent resistor RV1 cooperates with a thermistor RT1 and a protective tube F1 to inhibit differential mode overvoltage of the power supply port, a secondary anti-jamming circuit is a single-stage pi filter, a common mode inductor L1 and front and rear power supply input end anti-jamming capacitors CX1 are used to improve electromagnetic sensitivity and electromagnetic compatibility of the power supply, and simultaneously, in order to limit voltage rise caused by rapid change of current at surge moment at front and rear ends of the common mode inductor, a gas discharge tube a1 and a resistor R1 are connected in parallel to the common mode inductor L1 of the filter, the three-level anti-interference circuit is a lightning protection filter circuit, interference is restrained again through the safety capacitors CY3 and CY4 and the piezoresistor RV2, and the influence of the interference on a rear-level rectifier bridge and a power transformer is reduced. As shown in fig. 4, the signal terminal filtering anti-jamming circuit includes a first stage RC filter circuit, a second stage RC filter circuit and an ESD protection tube, wherein the first stage RC filter circuit firstly reduces and filters the high-frequency overvoltage signal to a large extent, clamps the peak value of the high-frequency overvoltage signal to within 5V through the ESD protection tube, and then further suppresses and filters the high-frequency overvoltage signal through the second stage RC filter circuit.

As a preferred embodiment of the present invention, as shown in fig. 1, the first main unit cabinet 12 and the second main unit cabinet 13 are provided with guide rails 151 on both sides corresponding to the loading/unloading port 15, wherein the heat radiation door panel 16 is slidably coupled to the guide rails 151. In order to increase the structural strength of the control box, as shown in fig. 1, a plurality of support rods 19 made of non-magnetic material are disposed in the shielding cabinet 1.

The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the utility model, but that various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined by the appended claims and their equivalents.

Claims

1. The utility model provides an anti-interference control box of wind turbine generator system, its characterized in that includes the shielding cabinet body (1) that comprises the heat dissipation cabinet body (11), the first host computer cabinet body (12) and the second host computer cabinet body (13), the first host computer cabinet body (12) with the second host computer cabinet body (13) are located respectively both ends about the heat dissipation cabinet body (11), the first host computer cabinet body (12) with be equipped with heat-conducting metal shield (100) in the second host computer cabinet body (13) respectively, the host computer is established in metal shield (100), be equipped with two in the heat dissipation cabinet body (11) and to radiator (2), two to the heat dissipation end of radiator (2) respectively through electromagnetic shield structure with the first host computer cabinet body (12) with the second host computer cabinet body (13) is connected, the top of the shielding cabinet body (1) is corresponding respectively the heat dissipation cabinet body (11), The position of the first main machine cabinet body (12) and the second main machine cabinet body (13) is provided with an electric connection terminal seat (7), the electric connection terminal seat (7) is connected with an anti-interference wire harness (8) which is vertically wired downwards, and the lower end of the anti-interference wire harness (8) is electrically connected with the main machine and the two-way radiator (2).

2. The anti-interference control box of wind turbine generator system according to claim 1, characterized in that, the electromagnetic shield structure includes radiator metallic shield cover, interior shielding steel sheet (3) and outer shielding steel sheet (31), the main part of bidirectional radiator (2) is established in the radiator metallic shield cover, establish in interior shielding steel sheet (3) the heat dissipation cabinet body (11) left and right sides, be used for right first host computer cabinet body (12) with second host computer cabinet body (13) cut off, establish in outer shielding steel sheet (31) the outside of interior shielding steel sheet (3), be equipped with the dryer assembly mouth on outer shielding steel sheet (31), the main shaft of bidirectional radiator (2) passes interior shielding steel sheet (3), and terminal fan blade is established in dryer (4).

3. The anti-interference control box of the wind turbine generator set according to claim 1, wherein a loading and unloading opening (15) is formed in the outer side of the first main unit cabinet body (12) and the outer side of the second main unit cabinet body (13), a heat dissipation door plate (16) capable of being opened in a vertical sliding mode is arranged at the loading and unloading opening (15), and waveguide heat dissipation mesh holes (18) are formed in the heat dissipation door plate (16).

4. The anti-interference control box of the wind turbine generator set according to claim 3, wherein the ends of the anti-interference wire harnesses (8) corresponding to the first main unit cabinet body (12) and the second main unit cabinet body (13) are connected to a main unit through a pluggable electrical connection socket (81), and the ends of the anti-interference wire harnesses (8) corresponding to the heat dissipation cabinet body (11) are electrically connected to the two-way heat sink (2).

5. The anti-interference control box for the wind turbine generator set according to claim 3, wherein linear transmission rollers (17) are arranged at the bottoms of the first main unit cabinet body (12) and the second main unit cabinet body (13), the metal shielding case (100) with the main unit is arranged on the linear transmission rollers (17), an operation window is arranged on the side wall of the first main unit cabinet body (12) and the second main unit cabinet body (13) at a position corresponding to the lower end of the anti-interference wire harness (8), and the operation window is provided with a shielding window plate (14).

6. The anti-interference control box of the wind turbine generator system according to claim 1, wherein the top of the shielding cabinet body (1) is composed of double layers of shielding plates, a shielding space is formed between the double layers of shielding plates, a shielding box (6) is arranged in the shielding space, and a filter (9) connected with the anti-interference wire harness (8) is arranged in the shielding box (6).

7. The anti-interference control box for the wind turbine generator set according to claim 3, wherein the first main unit cabinet (12) and the second main unit cabinet (13) are provided with guide rails (151) at two sides corresponding to the loading and unloading port (15), the heat dissipation door panel (16) is slidably connected to the guide rails (151), and the shielding cabinet (1) is provided with a plurality of support rods (19) made of non-magnetic materials.