A power tracking reactive power compensation control device

Abstract

The application discloses a kind of reactive power compensation control devices of electric power tracking, including control box, compensation unit and heat dissipation unit, the control box side wall is equipped with vent and the cavity in the lower part of the vent, the compensation unit includes the controller in the control box, control unit connected with the controller and protection unit connected with the controller, the heat dissipation unit includes the heat dissipation component in the vent and the drive component in the cavity.The application utilizes compensation unit not only has the stabilizing effect to grid output current voltage, but also can achieve the protection of most voltage current, simultaneously utilizes the negative sequence voltage relay formed by the negative sequence voltage characteristic when asymmetric short circuit or asymmetric operation occurs, so that fault element is exempted from continuing to be destroyed, to ensure that other fault-free parts quickly resume normal operation.

Description

Technical Field

[0001] This invention relates to the field of power technology, and in particular to a reactive power compensation control device for power tracking. Background Technology

[0002] A reactive power compensator is a compensation device that plays a crucial role in electronic power supply systems. Its function is to improve the power factor of the power grid, reduce losses in power transformers and transmission lines, increase power supply efficiency, and improve the power supply environment. Therefore, reactive power compensation control devices occupy an indispensable position in power supply systems. A reasonable selection of compensation devices can minimize network losses and improve power grid quality. Conversely, improper selection or use may cause voltage fluctuations, increased harmonics, and other issues in the power supply system. Reactive power compensation controllers have three sampling methods: power factor type, reactive power type, and reactive current type. Choosing the appropriate physical control method is essentially equivalent to choosing the reactive power compensation controller. The controller is the command system of the reactive power compensation device; sampling, calculation, issuing switching signals, parameter setting, measurement, and component protection are all performed by the compensation controller.

[0003] With the development of economy, science and technology and society, especially the rapid development of the power technology industry, the rapidly developing power industry is facing a larger application market. At the same time, due to the increasing number of unbalanced and nonlinear loads in the distribution network, the voltage and current quality of the power grid has been seriously affected by overload operation. Most of the existing methods to solve the voltage and current overload of the power grid use reactive power compensators. However, the compensation method of the existing reactive power compensators is unstable and cannot guarantee the operation and use of the power grid. In addition, the ventilation and heat dissipation performance of the external protective shell of the compensator is poor, which has a certain negative impact on the heat dissipation and cooling of the compensator and its surrounding electronic components.

[0004] Therefore, we propose a reactive power compensation control device for power tracking to solve the above problems. Summary of the Invention

[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0006] In view of the problems existing in the above and / or existing designs, the present invention is proposed.

[0007] Therefore, one of the objectives of this invention is to provide a reactive power compensation control device for power tracking, which employs a compensation unit that not only stabilizes the output current and voltage of the power grid, but also provides protection against voltage and current fluctuations.

[0008] To achieve the above effects, the present invention provides the following technical solution: a reactive power compensation control device for power tracking, comprising a control box, a compensation unit, and a heat dissipation unit. The control box has a ventilation opening on its side wall and a chamber located below the ventilation opening. The compensation unit includes a controller located inside the control box, a control unit connected to the controller, and a protection unit connected to the controller. The controller is connected to a busbar, and the protection unit is connected to a generator. The heat dissipation unit includes a heat dissipation component located inside the ventilation opening and a drive component located inside the chamber. The heat dissipation component is movably connected to the ventilation opening, and the drive component is fixedly connected to the heat dissipation component.

[0009] In a preferred embodiment of the present invention, the control unit includes a current sensor and a voltage sensor fixedly connected to the controller, the protection unit includes several sets of protection blocks connected in series, each of the protection blocks including voltage protection and current protection, and the generator is connected in parallel to the power grid through a self-commutating bridge circuit.

[0010] In a preferred embodiment of the present invention, the generator is connected to the drive circuit, and the drive circuit is connected to the detection block.

[0011] In a preferred embodiment of the present invention, a partition is provided between the vent and the chamber, the heat dissipation assembly includes a U-shaped base, a motor housing located inside the opening of the U-shaped base, and a motor located inside the motor housing. The bottom of the U-shaped base is rotatably connected to the partition, both sides of the motor housing are rotatably connected to the U-shaped base, the output shaft of the motor is fixedly connected to a fan, and the fan is located inside the control box.

[0012] In a preferred embodiment of the present invention, the ventilation port sidewall is provided with a limiting groove, the limiting groove is in the shape of an 8, and telescopic rods are provided on both sides of the motor housing. One end of the telescopic rod is provided with a first slider, and the first slider is slidably connected to the limiting groove.

[0013] In a preferred embodiment of the present invention, the telescopic rod includes a first slide rod and a second slide rod, one end of the first slide rod is fixedly connected to the motor housing, the first slide rod is sleeved inside the second slide rod, and the second slide rod is fixedly connected to the first slider.

[0014] In a preferred embodiment of the present invention, the first slider is spindle-shaped and is movably connected to one end of the second slider.

[0015] In a preferred embodiment of the present invention, the driving assembly includes a swing rod located at the lower part of the partition, a second slider located at the lower part of the swing rod, and a moving block passing through the interior of the second slider. A rotating shaft is provided at the top of one end of the swing rod, and the rotating shaft passes through the partition and is fixedly connected to a U-shaped seat. The other end of the swing rod is rotatably connected to the second slider, which is U-shaped. One end of the moving block is slidably connected to the interior of the second slider, and a third slider is provided at the top of the other end of the moving block. A straight groove is provided in the partition, and the third slider is slidably connected to the straight groove. The moving block is perpendicular to the straight groove.

[0016] In a preferred embodiment of the present invention, a sprocket is provided at the bottom of the chamber, the sprocket is connected to a chain drive, a drive block is provided at the top of the sprocket, an annular groove is provided on the upper part of the sprocket, the drive block is slidably connected to the inside of the annular groove, and the top of the annular groove is fixedly connected to the bottom of the moving block through a connecting block.

[0017] In a preferred embodiment of the present invention, the chain is rectangular, and the annular groove is perpendicular to the straight groove.

[0018] The beneficial effects of this invention are as follows: This invention utilizes a compensation unit that not only stabilizes the output current and voltage of the power grid, but also provides protection against both voltage and current. Simultaneously, it employs a negative sequence voltage relay, constructed using the negative sequence voltage characteristics that occur during asymmetrical short circuits or asymmetrical operation, to prevent further damage to faulty components, thereby ensuring that other fault-free parts quickly return to normal operation. The generator uses a static var generator for reactive power compensation. Compared to synchronous condensers, the static var generator consists entirely of stationary components, resulting in more reliable operation. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0020] Figure 1 This is a structural diagram of the control box of the present invention.

[0021] Figure 2 This is a schematic diagram of the compensation unit of the present invention.

[0022] Figure 3 This is an exploded view of the heat dissipation component of the present invention.

[0023] Figure 4 This is a schematic diagram showing the positions of the heat dissipation component and the drive component of the present invention.

[0024] Figure 5 This is an exploded view of the driving component of the present invention.

[0025] Figure 6 This is a top view of the driving component of the present invention.

[0026] Figure 7 This is a schematic diagram of the annular groove of the present invention.

[0027] Figure 8 This is a schematic diagram of the structure of the first slider of the present invention. Detailed Implementation

[0028] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0029] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0030] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0031] Example 1

[0032] Reference Figure 1 , 2 This is the first embodiment of the present invention. This embodiment provides a reactive power compensation control device for power tracking, including a control box 100, a compensation unit 200, and a heat dissipation unit. The control box 100 has a ventilation opening 101 on its side wall and a chamber 102 located below the ventilation opening 101. The compensation unit 200 includes a controller 201 located inside the control box 100, a control unit 202 connected to the controller 201, and a protection unit 203 connected to the controller 201. The controller 201 is connected to the bus, and the protection unit 203 is connected to the generator 204.

[0033] The control box 100 serves as the external cabinet for the compensation unit 200. The compensation unit 200 not only stabilizes the output current and voltage of the power grid but also provides protection against the most severe voltage and current. Simultaneously, it utilizes a negative sequence voltage relay, formed by the negative sequence voltage characteristics that occur during asymmetrical short circuits or asymmetrical operation, to prevent further damage to faulty components, thereby ensuring that other fault-free parts can quickly resume normal operation. The generator 204 uses a static var generator for reactive power compensation. Compared to synchronous condensers, the static var generator 204 consists entirely of static components, making its operation more reliable.

[0034] The heat dissipation unit 300 includes a heat dissipation component 400 located inside the vent 101 and a drive component 500 located inside the chamber 102. The heat dissipation component 400 is movably connected to the vent 101, and the drive component 500 is fixedly connected to the heat dissipation component 400.

[0035] The heat dissipation unit 300 is used to dissipate heat and cool the environment inside the control box 100. The vent 101 connects the internal environment of the control box 100 to the external environment. The chamber 102 is opened inside the side wall of the control box 100 and is located directly below the vent 101. The heat dissipation component 400 can deflect at the vent 101, thereby ventilating and dissipating heat in different areas (including top, bottom, left, and right) inside the control box 100. This can replace the previous method where the fan 403 only dissipates heat at a fixed point, thus ensuring that electrical components in all directions inside the control box 100 can be effectively cooled, improving the air exchange efficiency inside the control box 100. The drive component 500 is used to drive the heat dissipation component 400, so that the fan 403 of the heat dissipation component 400 can move in all directions inside the control box 100, realizing the function of changing the airflow direction of the fan 403.

[0036] Example 2

[0037] Reference Figures 1-2 This is the second embodiment of the present invention, which is based on the previous embodiment.

[0038] The control unit 202 includes a current sensor 202a and a voltage sensor 202b fixedly connected to the controller 201. The protection unit 203 includes several sets of protection blocks 203a connected in series. Each protection block 203a includes voltage protection 203a-1 and current protection 203a-2. The generator 204 is connected in parallel with the power grid through a self-commutated bridge circuit. The generator 204 is connected to the drive circuit 205. The drive circuit 205 is connected to the detection block 206.

[0039] The control unit 202 includes four steps: S1, the bus outputs power to the switching controller 201; S2, the control unit 202 detects the current and voltage output by the switching controller 201; S3, the protection unit 203 balances the current and voltage output by the switching controller 201; S4, the current is output to the reactive power generator 204 for reactive power compensation, and then through the drive circuit 205; S5, the current is output after phase and voltage detection.

[0040] The bus voltage is 10kV. Controller 201 is a switching controller 201, which uses a delayed switching method. This switching controller 201 is connected to a switching capacitor, and the switching capacitor has a synchronous switch. Control unit 202 includes a Hall current sensor 202a and a Hall voltage sensor 202b. Both sensors are fixedly connected to the switching controller 201. At the synchronous moment when the current is output to the switching controller 201, the Hall current sensor 202a and the Hall voltage sensor 202b on the control unit 202 will monitor the current and voltage values ​​on the switching controller 201 in advance. The drive circuit 205 amplifies the power transistor switching power to a level sufficient to drive the PWM pulse output by the reactive power generator 204, so that the power factor of the grid after output is stabilized above 0.90.

[0041] After the bus output power reaches the switching controller 201, the control unit 202 monitors the voltage and current of the switching controller 201. When the bus output voltage power reaches the switching controller 201 at a voltage of 10kV, the switching capacitor on the switching controller 201 controls the synchronous switch to operate, so that the contacts of the mechanical switch close or open accurately at the required time. The protection unit 203 is equipped with four sets. When the switching controller 201 outputs current to the four sets of series-connected protection units 203, the protection voltage 203a and protection current 203b inside the protection unit 203 output current to balance the power grid. The negative sequence overvoltage relay, which is constructed using the negative sequence voltage characteristics that occur during asymmetrical short circuit or asymmetrical operation, works in conjunction with the single-phase low-voltage relay and the three-phase overcurrent relay to form a composite voltage starting system with high sensitivity. Overcurrent protection is implemented, and the current output is sent to the static var generator 204 for reactive power compensation. The current is then transmitted through the drive circuit 205 and the detection block 206, which includes phase and voltage detection. After phase and voltage detection, the current is output. The static var generator 204 replaces the contact switch, allowing for smooth, continuous, and rapid regulation and control of reactive power. When impulsive active loads appear in the power grid, these impulsive active loads bring with them impulsive reactive power. The amplitude and rate of change of these impulsive reactive loads are large. Another characteristic of these impulsive loads is their low power factor. However, by using the static var generator 204 for reactive power compensation, compared to synchronous condensers, the static var generator 204, being entirely composed of static components, operates more reliably.

[0042] Example 3

[0043] Reference Figures 1-8 This is the third embodiment of the present invention, which is based on the previous embodiment.

[0044] A partition 103 is provided between the vent 101 and the chamber 102. The heat dissipation assembly 400 includes a U-shaped base 401, a motor housing 402 located inside the opening of the U-shaped base 401, and a motor located inside the motor housing 402. The bottom of the U-shaped base 401 is rotatably connected to the partition 103. Both sides of the motor housing 402 are rotatably connected to the U-shaped base 401. The output shaft of the motor is fixedly connected to the fan 403, which is located inside the control box 100.

[0045] The partition 103 is used to install the U-shaped seat 401, which can rotate on the partition 103. The motor housing 402 is used to install the motor, and the motor housing 402 can rotate inside the U-shaped seat 401. The motor housing 402 is rotatably connected to the U-shaped seat 401 through a connecting shaft. The motor housing 402 swings around the connecting shaft on a plane perpendicular to the partition 103. The combined motion of the swing of the motor housing 402 and the rotation of the U-shaped seat 401 around the rotating shaft 501a allows the fan 403 to ventilate and dissipate heat in different directions.

[0046] The side wall of the vent 101 is provided with a limiting groove 404, which is figure-eight shaped. Telescopic rods 405 are provided on both sides of the motor housing 402. A first slider 406 is provided at one end of each telescopic rod 405. The first slider 406 is slidably connected to the limiting groove 404. There are two limiting grooves 404, located on two corresponding sides of the side wall of the vent 101. The limiting grooves 404 are used to restrict the rotation direction of the motor housing 402 and the U-shaped seat 401. The first slider 406 slides within the limiting groove 404 and will not disengage from it. Due to the provision of two figure-eight shaped limiting grooves 404 (corresponding to the telescopic rods 405 on both sides respectively), and combined with the rotation of the U-shaped seat 401 on the plane of the partition 103 (providing…), the… The force in the horizontal direction and the rotation of the motor housing 402 in a plane perpendicular to the partition 103 (providing a vertical force, which, combined with the horizontal force, results in a resultant force in the tilt direction) make the telescopic rods 405 on both sides of the motor housing 402 diagonally inclined. For example, the telescopic rod 405 on the left side of the motor housing 402 starts from the center point of the figure-eight shape, starts from the upper right and rotates around the figure-eight shape to reach the highest point. Then the telescopic rod 405 on the right side of the motor housing 402 will start from the center point of the figure-eight shape, starts from the lower left and rotates around the figure-eight shape to reach the lowest point. During this process, the motor housing 402 will present different tilt states, and the airflow direction of the fan 403 will change accordingly, so that different areas inside the control box 100 can be cooled.

[0047] The telescopic rod 405 includes a first slide rod 405a and a second slide rod 405b. One end of the first slide rod 405a is fixedly connected to the motor housing 402. The first slide rod 405a is sleeved inside the second slide rod 405b. The second slide rod 405b is fixedly connected to the first slider 406. When the first slider 406 slides to different positions inside the limiting groove 404, the length of the telescopic rod 405 will change. Also, when the motor housing 402 rotates around the axis inside the U-shaped seat 401, if it is biased towards one side of the limiting groove 404, then the length of the telescopic rod 405 on the other side will be longer.

[0048] The first slider 406 is spindle-shaped and is movably connected to one end of the second slider 405b. The first slider 406 slides around a figure-eight pattern inside the limiting groove 404. The universal connection between the first slider 406 and the second slider 405b allows for different deflection directions of the telescopic rod 405. The spindle shape of the first slider facilitates its movement along a figure-eight trajectory at the intersection of the limiting groove center.

[0049] The drive assembly 500 includes a swing rod 501 located at the lower part of the partition 103, a second slider 502 located at the lower part of the swing rod 501, and a moving block 503 passing through the interior of the second slider 502. One end of the swing rod 501 is provided with a rotating shaft 501a, which passes through the partition and is fixedly connected to the U-shaped seat 401. The other end of the swing rod 501 is rotatably connected to the second slider 502, which is U-shaped. One end of the moving block 503 is slidably connected to the interior of the second slider 502, and the other end of the moving block 503 is provided with a third slider 504. The partition 103 is provided with a straight groove 103a, and the third slider 504 is slidably connected to the straight groove 103a. The moving block 503 is perpendicular to the straight groove 103a.

[0050] The straight groove 103a, combined with the second slider 502, is used to realize the swing rod 501 swinging around the rotation shaft 501a. The two ends of the rotation shaft 501a are fixedly connected to the U-shaped seat 401 and the swing rod 501. The U-shaped seat 401 and the swing rod 501 move synchronously. The swing rod 501 swings around the rotation shaft 501a as the center point. The moving block 503 slides inside the straight groove 103a through the third slider 504. When the moving block 503 moves from one end of the straight groove 103a to the other end, it is limited by the second slider 502. At this time, the swing rod 501 and the rotation shaft 501a deflect from one side to the other side. The area swept by the deflection is fan-shaped. The deflection of the swing rod 501 realizes the rotation of the U-shaped seat 401 on the partition 103.

[0051] A sprocket 505 is provided at the bottom of the chamber 102. The sprocket 505 is connected to the chain 506 for transmission. A drive block 507 is provided at the top of the chain 506. An annular groove 508 is provided on the upper part of the chain 506. The drive block 507 is slidably connected to the annular groove 508. The top of the annular groove 508 is fixedly connected to the bottom of the moving block 503 through a connecting block 508a. The chain 506 is rectangular. The annular groove 508 is perpendicular to the straight groove 103a.

[0052] The sprocket 505 drives the chain 506. When the chain 506 rotates, it can synchronously drive the drive block 507 to move. The movement of the drive block 507 is connected to the connecting block 508a, which allows the moving block 507 to move on the straight track of the straight groove 103a, thereby achieving the effect of driving the U-shaped seat 401 to rotate. The rectangular shape of the chain 506 combined with the annular groove 508 is used to provide a delay effect for the rotation of the U-shaped seat 401. The telescopic rod 405, which stops twice, is X-shaped, allowing the fan 403 to stop at a certain position, thus extending the ventilation time of this area.

[0053] Working principle:

[0054] The current is output to the reactive power generator 204 for reactive power compensation. After the current is output to the reactive power generator 204, reactive power compensation is performed on the current to improve the power factor and optimize the power quality. At the same time, it makes up for the shortcomings of the step compensation of the traditional reactive power compensator. The current is output after phase and voltage detection through the drive circuit 205.

[0055] Rotating sprocket 505 (rotation method is not limited) causes drive block 507 to rotate along with chain 506. Two corresponding sides of the rectangle formed by the four sprockets 505 are denoted as a1 and a2, and the other two corresponding sides as b1 and b2. The sides formed by the four sprockets 505 from beginning to end are a1, b1, a2, b2, a1, ... The rotation of sprocket 505 drives chain 506 to rotate, and drive block 507 will also begin to move. Assuming a1 is located below and parallel to the straight groove 103a, if drive block 507 moves to a1, then annular groove 508 moves with drive block 507. At this time, moving block 503 also slides within the straight groove 103a. The movement of moving block 503 will cause the swing arm to swing around the rotation axis. The fan deflects in different directions, and then the drive block 107 moves to b1. At this time, b1 is parallel to the annular groove 508. The drive block 507 slides in the annular groove 508, but the annular groove 508 itself does not move. That is to say, the moving block 503 does not move at this time. That is, the U-shaped seat 401 remains stationary. The length of b1 determines the pause time of the fan 403. Then the drive block 507 moves to a2. At this time, the annular groove 508 moves with the drive block 507. At this time, the moving block 507 also slides in the straight groove 103a. Then the drive block 507 moves to b2, a1, ..., and so on. During the movement of the drive block 507, the corresponding U-shaped seat 401 will first rotate to one direction and stay for a period of time, and then rotate to another direction and stay for a period of time.

[0056] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A reactive power compensation control device for power tracking, characterized in that: include, A control box (100) has a ventilation opening (101) on its side wall and a chamber (102) located below the ventilation opening (101). The compensation unit (200) includes a controller (201) located inside the control box (100), a control unit (202) connected to the controller (201), and a protection unit (203) connected to the controller (201). The controller (201) is connected to the busbar, and the protection unit (203) is connected to the generator (204). The heat dissipation unit (300) includes a heat dissipation component (400) located inside the vent (101) and a drive component (500) located inside the chamber (102). The heat dissipation component (400) is movably connected to the vent (101), and the drive component (500) is fixedly connected to the heat dissipation component (400). A partition (103) is provided between the vent (101) and the chamber (102); The drive assembly (500) includes a swing rod (501) located at the lower part of the partition (103), a second slider (502) located at the lower part of the swing rod (501), and a moving block (503) passing through the interior of the second slider (502). One end of the swing rod (501) is provided with a rotating shaft (501a), which passes through the partition and is fixedly connected to a U-shaped seat (401). The other end of the swing rod (501) is rotatably connected to the second slider (502). The second slider (502) is U-shaped. One end of the moving block (503) is slidably connected to the interior of the second slider (502). The other end of the moving block (503) is provided with a third slider (504). The partition (103) has a straight groove (103a). The third slider (504) is slidably connected to the straight groove (103a). The moving block (503) is perpendicular to the straight groove (103a). The bottom of the chamber (102) is provided with a sprocket (505), which is connected to the chain (506) for transmission. The top of the chain (506) is provided with a drive block (507), and the upper part of the chain (506) is provided with an annular groove (508). The drive block (507) is slidably connected to the inside of the annular groove (508), and the top of the annular groove (508) is fixedly connected to the bottom of the moving block (503) through a connecting block (508a). The chain (506) is rectangular, and the annular groove (508) is perpendicular to the straight groove (103a).

2. The reactive power compensation control device for power tracking as described in claim 1, characterized in that: The control unit (202) includes a current sensor (202a) and a voltage sensor (202b) fixedly connected to the controller (201). The protection unit (203) includes several sets of protection blocks (203a) connected in series. Each protection block (203a) includes voltage protection (203a-1) and current protection (203a-2). The generator (204) is connected in parallel to the power grid through a self-commutated bridge circuit.

3. The reactive power compensation control device for power tracking as described in claim 2, characterized in that: The generator (204) is connected to the drive circuit (205), and the drive circuit (205) is connected to the detection block (206).

4. The reactive power compensation control device for power tracking as described in claim 3, characterized in that: The heat dissipation assembly (400) includes a U-shaped base (401), a motor housing (402) located inside the opening of the U-shaped base (401), and a motor located inside the motor housing (402). The bottom of the U-shaped base (401) is rotatably connected to the partition (103), and both sides of the motor housing (402) are rotatably connected to the U-shaped base (401). The output shaft of the motor is fixedly connected to the fan (403), and the fan (403) is located inside the control box (100).

5. The reactive power compensation control device for power tracking as described in claim 4, characterized in that: The ventilation opening (101) has a limiting groove (404) on its side wall. The limiting groove (404) is in the shape of an 8. The motor housing (402) has telescopic rods (405) on both sides. One end of the telescopic rod (405) has a first slider (406). The first slider (406) is slidably connected to the limiting groove (404).

6. The reactive power compensation control device for power tracking as described in claim 5, characterized in that: The telescopic rod (405) includes a first slide rod (405a) and a second slide rod (405b). One end of the first slide rod (405a) is fixedly connected to the motor housing (402). The first slide rod (405a) is sleeved inside the second slide rod (405b). The second slide rod (405b) is fixedly connected to the first slider (406).

7. The reactive power compensation control device for power tracking as described in claim 6, characterized in that: The first slider (406) is spindle-shaped and is movably connected to one end of the second slider (405b).

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