An electric quantity safety acquisition device of a wind farm primary frequency modulation control system

Abstract

The utility model provides a kind of electric quantity safety acquisition device of wind farm primary frequency control system, including electric quantity acquisition table and lug, the rear side of the upper end of electric quantity acquisition table is fixed with lug, the upper and lower sides of the front end of electric quantity acquisition table are fixed with terminal, the front side of terminal is equipped with shielding component, the left and right sides of the rear side of the upper end of electric quantity acquisition table are fixed with lug, the upper and lower sides of the front end of electric quantity acquisition table are fixed with terminal, terminal is connected with terminal screw thread, the front side of terminal is equipped with shielding component. Through the cooperation between servo motor, wiring hole, main shaft, baffle and electric quantity acquisition table, the insulation skin of the outer wall of fire wire that has completed wiring is blocked by baffle, the connection copper sheet of fire wire is combined in wiring hole, so as not to be open and exposed, then control the servo motor below to repeat the above process to install zero line of No.1 and No.3, effectively avoid the wiring hole position of electric quantity acquisition table is in open state, at this time, wiring error is prone to occur, and short circuit problem is prone to occur due to the contact between zero line and fire wire.

Description

Technical Field

[0001] This utility model relates to the field of power acquisition technology, and in particular to a power safety acquisition device for a primary frequency regulation control system of a wind farm. Background Technology

[0002] The power acquisition meter is connected to the primary frequency regulation control system circuit of the wind farm. When the power generated by the wind farm exceeds the power required by the grid, the excess power is transferred to the energy storage structure for storage through the control system. When the power generated by the wind farm is lower than the power required by the grid, the energy storage structure releases power into the circuit to make up for the missing power and realize the frequency regulation control of the wind farm. In actual use, the power acquisition meter needs to monitor the power data between the generation circuit, energy storage circuit and grid circuit in the wind farm in real time so as to adjust the specific frequency regulation mode at any time. For example, the power safety acquisition device of the primary frequency regulation control system of the wind farm with application number "202322811334.4" includes a bus coupler, a protocol conversion module and a grid measurement module.

[0003] However, although it can ensure the safety and progress of the primary frequency control system project, the existing power acquisition meter wiring holes are all in an open state, which makes it easy to make wiring errors and cause short circuits due to contact between the neutral wire and the live wire. At the same time, if a simple shielding structure is used, it is easy to cause the wiring holes to be completely open due to misoperation, which will cause the shielding process to fail. Summary of the Invention

[0004] This invention aims to solve the problems of existing technologies, such as the open wiring holes of existing power acquisition meters, which easily lead to wiring errors and short circuits caused by contact between the neutral and live wires. Furthermore, if a simple shielding structure is used, misoperation can easily result in the wiring holes being completely open, causing the shielding process to fail. The invention provides a power safety acquisition device for a wind farm primary frequency regulation control system.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: This power safety acquisition device for the primary frequency regulation control system of a wind farm includes a power acquisition meter and ear plates. Ear plates are fixedly connected to the upper rear side and both sides of the power acquisition meter. Wiring terminals are fixedly connected to the upper and lower sides of the front end of the power acquisition meter. Multiple wiring bolts are evenly distributed inside the upper part of the wiring terminals. The wiring bolts are threadedly connected to the wiring terminals. A shielding component is installed on the front side of the wiring terminals.

[0006] To further improve the design, the shielding assembly includes a baffle and a main shaft. Multiple main shafts are located on the upper and lower sides of the front end of the terminal block. The outer ends of the main shafts are rotatably connected to the end plate via bearings. The rear end of the end plate is fixedly connected to the terminal block. The outer wall of the left end plate is fixedly connected to the servo motor. The output shaft of the servo motor is fixedly connected to the main shaft. A baffle is fixedly attached to the inner side of the outer wall of the main shaft. An arc-shaped rubber plate is provided on the outer wall of the right end of the main shaft. The inner ends of the upper and lower arc-shaped rubber plates are fixedly connected to the two ends of the output shaft of the self-locking cylinder. The rear side of the outer wall of the self-locking cylinder is fixedly connected to the terminal block.

[0007] To further improve the design, the front side of the terminal block is machined with multiple wiring holes, the positions of which correspond to the positions of the baffle.

[0008] To further improve the system, a display screen is fixedly attached to the rear side of the upper center of the power acquisition meter.

[0009] To further improve the system, multiple control buttons are machined on the front side of the upper center of the power acquisition meter.

[0010] To further improve the design, a label is machined on the upper front side of the terminal block.

[0011] The beneficial effects of this utility model are as follows: This utility model, through the cooperation of the servo motor, wiring holes, spindle, baffle, and power acquisition meter, first controls the upper servo motor to drive the spindle and baffle to rotate, exposing the wiring holes at positions 2 and 4. The copper pieces connecting the live wire ends of the corresponding circuits are then inserted, and finally, the corresponding wiring bolts are tightened to achieve the connection. Subsequently, the upper servo motor is controlled to reset, and the baffle blocks the insulation of the already wired live wire, preventing the connecting copper pieces from being exposed inside the wiring holes. Then, the lower servo motor is controlled to repeat the above process to install the neutral wires at positions 1 and 3. Because the neutral and live wires are installed separately, and the live wire is already blocked during neutral wire installation, this effectively avoids the wiring holes of the power acquisition meter being in an open state, which could easily lead to wiring errors and short circuits caused by contact between the neutral and live wires.

[0012] Through the cooperation between the arc-shaped rubber plate, the self-locking cylinder, the servo motor, and the spindle, since the two arc-shaped rubber plates are connected to the output shaft of the same self-locking cylinder, the two arc-shaped rubber plates can be driven to move up and down synchronously. When the self-locking cylinder is in use, it controls the upper arc-shaped rubber plate to press against the spindle to restrict its rotation, while the lower arc-shaped rubber plate automatically disengages from the lower spindle. In this way, it is ensured that only one servo motor can participate in the rotation process required for wiring at a time, avoiding the failure of the process due to the wiring hole being completely open due to misoperation. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the front appearance structure of this utility model;

[0014] Figure 2 This utility model Figure 1 Schematic diagram of the structure with the first and third wiring holes in the open state;

[0015] Figure 3 This utility model Figure 1 Schematic diagram of the structure with the second and fourth wiring holes in the open state;

[0016] Figure 4 This utility model Figure 1 A partial structural diagram of the intermediate wiring terminal;

[0017] Figure 5 This utility model Figure 1 A top-down structural diagram.

[0018] Explanation of reference numerals in the attached diagram: 1. Power acquisition meter, 2. Ear plate, 3. Shielding assembly, 301. Baffle, 302. End plate, 303. Spindle, 304. Self-locking cylinder, 305. Arc-shaped rubber plate, 306. Servo motor, 4. Display screen, 5. Control button, 6. Wiring bolt, 7. Label, 8. Wiring terminal, 9. Wiring hole. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings:

[0020] See attached document Figure 1-5In this embodiment, a power safety acquisition device for a wind farm primary frequency regulation control system includes a power acquisition meter 1 and ear plates 2. Since the improvement and supplementation are only made at the wiring terminals 8 of the power acquisition meter 1, and the wiring terminals 8 are a structure present in every type of power acquisition meter 1, this invention can meet the needs of different models of power acquisition meters 1. The specific model can be selected according to usage requirements. Ear plates 2 are fixedly connected to the left and right sides of the upper rear side of the power acquisition meter 1, and wiring terminals 8 are fixedly connected to the upper and lower sides of the front end of the power acquisition meter 1. Multiple wiring bolts 6 are evenly distributed inside the upper part of the wiring terminals 8, and the wiring bolts 6 are threaded onto the wiring terminals 8. The wiring bolt 6 can press the copper sheet into which the external cable is inserted to connect to the contact plate of the terminal 8 to achieve circuit connection. A shielding component 3 is installed on the front side of the terminal 8. Multiple wiring holes 9 are machined on the front side of the terminal 8. The position of the wiring holes 9 corresponds to the position of the baffle 301. A display screen 4 is fixedly connected to the rear side of the upper center of the power acquisition meter 1. The display screen 4 displays the specific acquisition data. Multiple control buttons 5 are machined on the front side of the upper center of the power acquisition meter 1. The control buttons 5 control the specific operation process of the power acquisition meter 1. A label 7 is machined on the front side of the upper end of the terminal 8. The label 7 marks the specific positions 1 to 4.

[0021] See attached document Figure 1-5 In this embodiment, the shielding component 3 includes a baffle 301 and a main shaft 303. Multiple main shafts 303 are located on the upper and lower front sides of the terminal block 8. The outer ends of the main shafts 303 are rotatably connected to the end plate 302 via bearings. The rear end of the end plate 302 is fixedly connected to the terminal block 8. The outer wall of the left end plate 302 is fixedly connected to the servo motor 306. The model of the servo motor 306 can be determined according to specific usage requirements. The output shaft of the servo motor 306 is fixedly connected to the main shaft 303. The baffle 301 is fixedly connected to the inner side of the outer wall of the main shaft 303. The outer wall of the right end of the main shaft 303 is provided with an arc-shaped rubber plate 305. The inner ends of the upper and lower arc-shaped rubber plates 305 are fixedly connected to the two ends of the output shaft of the self-locking cylinder 304. The model of the self-locking cylinder 304 can be determined according to specific usage requirements. The rear side of the outer wall of the self-locking cylinder 304 is fixedly connected to the terminal block 8.

[0022] Working principle:

[0023] When the power safety acquisition device of the primary frequency regulation control system of this wind farm is needed, the user first connects the power acquisition meter 1 in this case to the circuit of the primary frequency regulation control system of the wind farm. When the power generated by the wind farm exceeds the power required by the grid, the excess power is transmitted to the energy storage structure for storage through the control system. When the power generated by the wind farm is lower than the power required by the grid, the energy storage structure releases power into the circuit to make up for the missing power and realize the frequency regulation control of the wind farm. In actual use, the power acquisition meter 1 needs to monitor the power data between the power generation circuit, energy storage circuit and grid circuit in the wind farm in real time so as to adjust the specific frequency regulation mode at any time. Compared with the existing technology, the wiring holes of the power acquisition meter 1 are all in an open state, which is prone to wiring errors and can easily cause the neutral wire and the live wire to touch, resulting in a short circuit. Therefore, the shielding component 3 is designed in this case.

[0024] In use, positions 1 and 3 are for neutral wire connection, and positions 2 and 4 are for live wire connection. Positions 1 and 2 form one circuit, and positions 3 and 4 form another circuit. For specific connection, first control the upper servo motor 306 to rotate the spindle 303 and baffle 301, exposing the connection holes 9 at positions 2 and 4. Insert the copper piece connecting the live wire end of the corresponding circuit, and finally tighten the corresponding connection bolt 6 to complete the connection. Afterwards, first control the upper servo motor 306 to reset, and then... Board 301 clamps and blocks the outer insulation of the live wire that has already been wired, and assembles the connecting copper piece of the live wire inside the wiring hole 9 so that it is not exposed. Then, it controls the servo motor 306 below to repeat the above process to install the neutral wires at positions 1 and 3. During the process, since the neutral wire and the live wire are installed separately, and the live wire is already blocked when the neutral wire is installed, it effectively avoids the wiring holes of the power acquisition meter 1 being in an open state, which is prone to wiring errors and can easily cause the neutral wire and the live wire to touch and cause a short circuit.

[0025] Meanwhile, to avoid operational errors, this design also incorporates a self-locking cylinder 305 and an arc-shaped rubber plate 305. Since the two arc-shaped rubber plates 305 are connected to the output shaft of the same self-locking cylinder 305, they can drive the arc-shaped rubber plates 305 on both sides to move up and down synchronously. When the self-locking cylinder 305 is in use, and the upper arc-shaped rubber plate 305 is pressed against the main shaft 303 to restrict its rotation, the lower arc-shaped rubber plate 305 will automatically disengage from the lower main shaft 303. This ensures that only one servo motor 306 can participate in the rotation process required for wiring at a time, avoiding the failure of the process due to the wiring hole being completely open caused by misoperation.

[0026] Although the present invention has been illustrated and described with reference to preferred embodiments, those skilled in the art should understand that various changes in form and detail are possible within the scope of the claims.

Claims

1. A power safety acquisition device for a primary frequency regulation control system of a wind farm, comprising a power acquisition meter (1) and ear plates (2), wherein ear plates (2) are fixedly connected to both the left and right sides of the upper rear side of the power acquisition meter (1), characterized in that: The power acquisition meter (1) has terminals (8) fixedly connected to both the upper and lower sides of the front end. Multiple wiring bolts (6) are evenly distributed inside the upper part of the terminals (8). The wiring bolts (6) are threadedly connected to the terminals (8). A shielding component (3) is installed on the front side of the terminals (8).

2. The power safety acquisition device for the primary frequency regulation control system of a wind farm according to claim 1, characterized in that: The shielding assembly (3) includes a baffle (301) and a main shaft (303). Multiple main shafts (303) are located on the upper and lower front ends of the terminal block (8). The outer ends of the main shafts (303) are rotatably connected to the end plate (302) through bearings. The rear end of the end plate (302) is fixedly connected to the terminal block (8). The outer wall of the left end plate (302) is fixedly connected to the servo motor (306). The output shaft of the servo motor (306) is fixedly connected to the main shaft (303). The inner side of the outer wall of the main shaft (303) is fixedly connected to the baffle (301). The outer wall of the right end of the main shaft (303) is provided with an arc-shaped rubber plate (305). The inner ends of the upper and lower arc-shaped rubber plates (305) are fixedly connected to the two ends of the output shaft of the self-locking cylinder (304). The rear side of the outer wall of the self-locking cylinder (304) is fixedly connected to the terminal block (8).

3. The power safety acquisition device for the primary frequency regulation control system of a wind farm according to claim 1, characterized in that: The front side of the terminal block (8) is machined with a plurality of wiring holes (9), the positions of which correspond to the positions of the baffle (301).

4. The power safety acquisition device for the primary frequency regulation control system of a wind farm according to claim 1, characterized in that: The power acquisition meter (1) has a display screen (4) fixedly connected to the rear side of the center of the upper end.

5. The power safety acquisition device for the primary frequency regulation control system of a wind farm according to claim 1, characterized in that: The power acquisition meter (1) has multiple control buttons (5) machined on the front side of the center of the upper end.

6. The power safety acquisition device for the primary frequency regulation control system of a wind farm according to claim 1, characterized in that: A label (7) is machined on the front side of the upper end of the terminal block (8).

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