Electric power reactive compensation controller for smart power grid

Abstract

The invention relates to the technical field of intelligent power grid equipment, in particular to an electric power reactive compensation controller for an intelligent power grid, which comprises a capacitor fixing tool, a capacitor, a butt joint piece, a discharge piece, a heat dissipation assembly, a guide frame, a contactor, a sub-control switch, a main control switch and a cabinet body. A plurality of capacitors are mounted on the capacitor fixing tool, so that the heights of the capacitors can be conveniently adjusted through the capacitor fixing tool, the capacitors can be connected with the butt joint piece, and the capacitors can be more conveniently and quickly overhauled and maintained; the heat dissipation assembly is installed on the butt joint piece, heat dissipation of the capacitor is facilitated through the heat dissipation assembly, and the stability of the capacitor is better; the discharge parts are arranged in the cabinet body, and after the capacitors are separated from the butt joint parts, the capacitors are automatically discharged through one-by-one connection of the discharge parts and the corresponding capacitors, so that the operation safety is improved, and the discharge efficiency is higher.

Description

Technical Field

[0001] The present invention relates to the technical field of smart grid equipment, and specifically to a reactive power compensation controller for smart grid. Background Art

[0002] The reactive power compensation controller is a key device for automatically adjusting reactive power compensation in the power system. Its core principle is to dynamically control the switching of capacitor banks by real-time monitoring of electrical parameters of the power grid (such as voltage, current, power factor, etc.) to optimize the reactive power distribution, improve the power factor, reduce line losses, and stabilize the voltage. By putting into or cutting out capacitor banks with different capacities in the power grid, the reactive power in the power grid is adjusted to improve the power factor and the power quality.

[0003] However, in the traditional power reactive power compensation controller, the capacitor bank is fixed on the chassis by bolts, and the connectors on the capacitor are used in cooperation with nuts to fix the cables. Since the capacitor works in an alternating electric field for a long time, it is easily affected by factors such as voltage fluctuations, harmonic interference, and environmental temperature and ages or is damaged. Therefore, it needs to be regularly repaired and maintained. When using the bolt connection method to fix the capacitor bank, the later repair and maintenance efficiency is affected; discharging the capacitor bank is a key safety step during maintenance and repair, aiming to eliminate the residual charge between the capacitor plates and avoid the risk of electric shock. During the operation, the operator uses a light bulb and a power cord to short-circuit the two terminals of the capacitor bank respectively. The operation process requires manual operation, with low safety and poor operation standardization. Therefore, a reactive power compensation controller for smart grid is needed to solve the above technical problems. Summary of the Invention

[0004] A reactive power compensation controller for smart grid is provided for the problems in the prior art.

[0005] The technical solution adopted by the present invention to solve its technical problems is: a reactive power compensation controller for smart grid, including a capacitor, a guiding frame, a contactor, a sub-control switch, a main control switch, and a cabinet; a capacitor fixing tooling for supporting the capacitor is installed inside the cabinet, and the capacitor fixing tooling drives the capacitor to move up and down; a docking member electrically connected to the sub-control switch is fixed inside the cabinet, and the docking member is electrically connected to the capacitor; a heat dissipation component for dissipating heat from the capacitor is provided inside the docking member, and a discharging component for discharging the capacitor is provided on the docking member.

[0006] Specifically, the contactor, the sub-control switch, and the main control switch are all fixed to the cabinet. The contactor is electrically connected to the sub-control switch, and the sub-control switch and the main control switch are electrically connected. The capacitor fixing tooling includes a chassis and a first telescopic member fixed to the bottom end of the chassis. The bottom end of the first telescopic member is fixed to the bottom plate of the cabinet. A plurality of capacitors are installed on the top surface of the chassis, and the chassis is slidably connected to the guiding frame.

[0007] Specifically, a positioning column is provided on the base frame, the base of the capacitor is engaged with the positioning column, and a heat dissipation fin is installed at the bottom end of the base frame.

[0008] Specifically, the docking member includes a fixing frame and a protective sleeve arranged at the bottom end of the fixing frame, and the protective sleeve is sleeved with the top end of the capacitor.

[0009] Specifically, a docking joint is fixed on the protective sleeve, and the docking joint is electrically connected to the contactor. A positioning head is threadedly connected to the terminal of the capacitor. The top end of the positioning head is a truncated cone structure, and the bottom end of the positioning head is a hexagonal prism structure.

[0010] Specifically, the heat dissipation component includes a guide channel and air holes. The interior of the fixing frame is provided with a guide channel. Both ends of the protective sleeve are penetrated by air holes, and the air holes are connected to the guide channel.

[0011] Specifically, an air pump is fixed on the fixing frame, a connecting pipe is installed on the air pump, and one end of the connecting pipe facing away from the air pump is fixed to the fixing frame and extends to the inside of the guide channel.

[0012] Specifically, the discharge component includes a support frame, a movable support frame is provided inside the cabinet, a guide rail is installed at the bottom end of the support frame, two moving blocks are provided inside the guide rail, a discharge docking sleeve is installed inside the moving block, the discharge docking sleeve is electrically connected to the lamp holder, the lamp holder is fixed to the support frame, and a light bulb is installed on the lamp holder. When the docking head is separated from the positioning head, the support frame moves to connect the discharge docking sleeve with the positioning head one by one, so that the light bulb is electrically connected to the capacitor to achieve discharge.

[0013] Specifically, guide blocks are fixed on both sides of the moving block, the guide blocks are slidably connected to the slide grooves in the guide rails, and a telescopic member 2 is fixed between the moving block and the support frame.

[0014] Specifically, a moving part is installed on the guide frame, and the moving part drives the slider to slide. The slider and the guide sleeve are symmetrically fixed at both ends of the support frame. Two fixed seats are fixed on both sides of the fixed frame. A sliding rod is installed on the fixed seat, and the guide sleeve is slidably connected to the sliding rod.

[0015] The beneficial effects of the present invention are: (1) In the reactive power compensation controller for smart grid described in the present invention, a plurality of capacitors are mounted on the capacitor fixing fixture, so that the height of the capacitor can be adjusted by the capacitor fixing fixture to achieve connection between the capacitor and the docking member, making the inspection and maintenance of the capacitor more convenient and quick.

[0016] (2) For the reactive power compensation controller for smart grid of the present invention, a heat dissipation component is installed on the docking component, which facilitates heat dissipation of the capacitor through the heat dissipation component, making the stability of the capacitor better.

[0017] (3) For the reactive power compensation controller for smart grid of the present invention, a discharging component is provided inside the cabinet. After the capacitor is separated from the docking component, the discharging component is connected to the corresponding capacitor one by one to automatically discharge the capacitor, improving the operation safety and making the discharging efficiency higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below in conjunction with the drawings and embodiments.

[0019] Figure 1 It is a schematic diagram of the overall structure of a preferred embodiment of the reactive power compensation controller for smart grid provided by the present invention; Figure 2 It is a schematic diagram of the connection structure between the chassis and the capacitor of the present invention; Figure 3 For Figure 2 The enlarged schematic diagram of the structure of part A shown; Figure 4 The cross-sectional view of the fixing frame of the present invention; Figure 5 For Figure 4 The enlarged schematic diagram of the structure of part B shown; Figure 6 It is a schematic diagram of the structure of the first telescopic part and the chassis of the present invention; Figure 7 For Figure 6 The enlarged schematic diagram of the structure of part C shown; Figure 8 It is a schematic diagram of the connection structure between the fixing frame and the protective sleeve of the present invention; Figure 9 It is a vertical cross-sectional view of the fixing frame and the protective sleeve of the present invention; Figure 10 It is a schematic diagram of the docking state between the discharging docking sleeve and the positioning head of the present invention Figure 11 It is a vertical cross-sectional view of the support frame of the present invention; Figure 12 It is an overall view of the cabinet of the present invention.

[0020] In the figure: 1. Capacitor fixing tooling; 101. Underframe; 102. First telescopic member; 103. Heat dissipation fins; 104. Positioning post; 2. Capacitor; 3. Docking member; 301. Fixing frame; 302. Protective sleeve; 303. Docking head; 304. Positioning head; 4. Discharging member; 401. Fixing seat; 402. Slide bar; 403. Support frame; 404. Slide block; 405. Moving member; 406. Guide rail; 407. Moving block; 408. Discharge docking sleeve; 409. Lamp holder; 410. Light bulb; 411. Guide block; 412. Guide sleeve; 413. Second telescopic member; 5. Heat dissipation assembly; 501. Air pump; 502. Connecting pipe; 503. Flow guiding channel; 504. Air hole; 6. Guide frame; 7. Contactor; 8. Sub-control switch; 9. Main control switch; 10. Cabinet body. Detailed implementation manner

[0021] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below in conjunction with specific implementation manners.

[0022] As Figure 1 , Figure 2 and Figure 12 shown, a power reactive compensation controller for a smart grid according to the present invention includes a capacitor 2, a guide frame 6, a contactor 7, a sub-control switch 8, a main control switch 9 and a cabinet body 10; a capacitor fixing tooling 1 for supporting the capacitor 2 is installed inside the cabinet body 10, and the capacitor fixing tooling 1 drives the capacitor 2 to move up and down; a docking member 3 electrically connected to the sub-control switch 8 is fixed inside the cabinet body 10, and the docking member 3 is electrically connected to the capacitor 2; a heat dissipation assembly 5 for dissipating heat from the capacitor 2 is provided inside the docking member 3, and a discharging member 4 for discharging the capacitor 2 is provided on the docking member 3; a discharging member 4 is provided inside the cabinet body 10. After the capacitor 2 is separated from the docking member 3, the discharging member 4 is connected to the corresponding capacitor 2 one by one to automatically discharge the capacitor 2, improving the operation safety and making the discharging efficiency higher.

[0023] Specifically, as Figure 1 , Figure 2 and Figures 4 - 6As shown, the contactor 7, the sub-control switch 8, and the main control switch 9 are all fixed to the cabinet body 10. The contactor 7 is electrically connected to the sub-control switch 8, and the sub-control switch 8 is electrically connected to the main control switch 9. The capacitor fixing tooling 1 includes a chassis 101 and a first telescopic member 102 fixed to the bottom end of the chassis 101. The bottom end of the first telescopic member 102 is fixed to the bottom plate of the cabinet body 10. A plurality of capacitors 2 are installed on the top surface of the chassis 101. The chassis 101 is slidably connected to the guiding frame 6. When maintenance and repair of the capacitor 2 are required, the first telescopic member 102 contracts. The first telescopic member 102 is preferably a hydraulic cylinder. The first telescopic member 102 drives the chassis 101 to slide downward, and the chassis 101 drives the capacitor 2 to move downward, separating the capacitor 2 from the docking member 3. Then, the discharging member 4 is used to discharge each capacitor 2 one by one. A positioning post 104 is provided on the chassis 101, and the base of the capacitor 2 is engaged with the positioning post 104. Heat dissipation fins 103 are installed at the bottom end of the chassis 101 to improve the heat dissipation effect of the capacitor 2.

[0024] Specifically, as Figure 1 and Figures 2 - 9 shown, the docking member 3 includes a fixing frame 301 and a protective sleeve 302 provided at the bottom end of the fixing frame 301. The protective sleeve 302 is sleeved on the top end of the capacitor 2. A docking head 303 is fixed on the protective sleeve 302, and the docking head 303 is electrically connected to the contactor 7. A positioning head 304 is threadedly connected to the terminal of the capacitor 2. After the maintenance and repair of the capacitor 2 are completed, the base of the capacitor 2 is engaged with the positioning post 104. The setting of the positioning post 104 limits the position of the capacitor 2, making the docking head 303 correspond to the positioning head 304. When the capacitor 2 is placed on the chassis 101, the first telescopic member 102 drives the chassis 101 to slide upward, and the chassis 101 drives the capacitor 2 to move upward. The positioning head 304 on the capacitor 2 abuts against the docking head 303 to achieve electrical connection. At this time, the protective sleeve 302 is sleeved on the capacitor 2 to protect the positions where the positioning head 304 and the docking head 303 are located, making the installation and disassembly of the capacitor 2 more convenient and fast. The top end of the positioning head 304 is a frustum-shaped structure, making the contact effect between the positioning head 304 and the docking head 303 better. The bottom end of the positioning head 304 is a hexagonal prism structure, facilitating the disassembly of the positioning head 304.

[0025] Specifically, as Figure 1 、 Figure 2 and Figures 4 - 6As shown, the heat dissipation component 5 includes a diversion channel 503 and air holes 504. The diversion channel 503 is provided inside the fixing frame 301. Both ends of the protective sleeve 302 are penetrated by the air holes 504. The air holes 504 are communicated with the diversion channel 503. An air pump 501 is fixed on the fixing frame 301. A connecting pipe 502 is installed on the air pump 501. The end of the connecting pipe 502 away from the air pump 501 is fixed to the fixing frame 301 and extends into the diversion channel 503. When the temperature of the capacitor 2 is relatively high, the air pump 501 operates. The air pump 501 transports gas into the diversion channel 503 through the connecting pipe 502, and the gas blows towards the capacitor 2 from the air holes 504, facilitating the heat dissipation of the capacitor 2 and making the stability of the capacitor 2 better.

[0026] Specifically, such as Figures 1 - 7 and Figures 10 - 11As shown, the discharge member 4 includes a support frame 403. A movable support frame 403 is provided inside the cabinet body 10. A guide rail 406 is installed at the bottom end of the support frame 403. Two moving blocks 407 are provided inside the guide rail 406. A discharge docking sleeve 408 is installed inside the moving block 407. The discharge docking sleeve 408 is electrically connected to the lamp head 409. The lamp head 409 is fixed to the support frame 403. A light bulb 410 is installed on the lamp head 409. After the docking head 303 is separated from the positioning head 304, the support frame 403 moves, so that the discharge docking sleeve 408 is connected to the positioning head 304 one by one, and the light bulb 410 is electrically connected to the capacitor 2 to achieve discharge. A second telescopic member 413 is fixed between the moving block 407 and the support frame 403. A moving member 405 is installed on the guide frame 6. The moving member 405 drives the slider 404 to slide. The slider 404 and the guide sleeve 412 are symmetrically fixed at both ends of the support frame 403. Two fixed seats 401 are fixed on both sides of the fixed frame 301. A slide bar 402 is installed on the fixed seat 401. The guide sleeve 412 is slidably connected to the slide bar 402. Guide blocks 411 are fixed on both sides of the moving block 407. The guide blocks 411 are slidably connected to the chute in the guide rail 406. After the docking head 303 and the positioning head 304 are completely separated, the moving member 405 drives the slider 404 to move. The slider 404 drives the support frame 403 to move. The support frame 403 drives the discharge docking sleeve 408 to be above the positioning head 304 through the guide rail 406. During the movement of the support frame 403, the support frame 403 drives the guide sleeve 412 to slide with the slide bar 402, making the movement of the support frame 403 more stable. The second telescopic member 413 drives the moving block 407 to move. The guide blocks 411 on both sides of the moving block 407 move in the guide rail 406, making the sliding of the moving block 407 more stable. The moving block 407 drives the position of the discharge docking sleeve 408 to change, facilitating the pairwise docking of the terminals of the capacitor 2. When the discharge docking sleeve 408 corresponds to the two terminals of the capacitor 2, the first telescopic member 102 drives the bottom frame 101 to slide upward. The bottom frame 101 drives the capacitor 2 to move upward. The positioning head 304 on the capacitor 2 abuts against the discharge docking sleeve 408 to achieve electrical connection. Discharge is achieved through the light bulb 410, and then the capacitors 2 are discharged one by one, improving the operation efficiency and having higher safety.

[0027] When the present invention is in use, when it is necessary to repair and maintain the capacitor 2, the first telescopic member 102 contracts. The first telescopic member 102 is preferably a hydraulic cylinder. The first telescopic member 102 drives the chassis 101 to slide downward. The chassis 101 drives the capacitor 2 to move downward. The positioning head 304 on the capacitor 2 is separated from the docking head 303. Then, the discharging member 4 discharges the capacitor 2 one by one. After the repair and maintenance of the capacitor 2 is completed, the base of the capacitor 2 is engaged with the positioning column 104. The setting of the positioning column 104 limits the position of the capacitor 2, making the docking head 303 correspond to the positioning head 304. When the capacitor 2 is placed on the chassis 101, the first telescopic member 102 drives the chassis 101 to slide upward. The chassis 101 drives the capacitor 2 to move upward. The positioning head 304 on the capacitor 2 abuts against the docking head 303 to achieve electrical connection. At this time, the protective sleeve 302 is sleeved on the capacitor 2 to protect the positions where the positioning head 304 and the docking head 303 are located, making the installation and disassembly of the capacitor 2 more convenient and fast. When the docking head 303 and the positioning head 304 are completely separated, the moving member 405 drives the slider 404 to move. The moving member 405 is preferably a linear motor. The slider 404 drives the support frame 403 to move. The support frame 403 drives the discharging docking sleeve 408 to be above the positioning head 304 through the guide rail 406. During the movement of the support frame 403, the support frame 403 drives the guide sleeve 412 to slide with the slide rod 402, making the movement of the support frame 403 more stable. The second telescopic member 413 drives the moving block 407 to move. The second telescopic member 413 is preferably a hydraulic cylinder. The guide blocks 411 on both sides of the moving block 407 move in the guide rail 406, making the sliding of the moving block 407 more stable. The moving block 407 drives the position of the discharging docking sleeve 408 to change, facilitating the pairwise docking of the terminals of the capacitor 2. When the discharging docking sleeve 408 corresponds to the two terminals of the capacitor 2, the first telescopic member 102 drives the chassis 101 to slide upward. The chassis 101 drives the capacitor 2 to move upward. The positioning head 304 on the capacitor 2 abuts against the discharging docking sleeve 408 to achieve electrical connection. Discharge is achieved through the bulb 410, and then the capacitor 2 is discharged one by one, improving the operation efficiency and having higher safety. The first telescopic member 102, the second telescopic member 413, and the moving member 405 are all connected to the control module of the cabinet 10 to achieve automatic control. When the temperature of the capacitor 2 is relatively high, the air pump 501 operates. The air pump 501 transports gas to the diversion channel 503 through the connecting pipe 502. The gas blows from the air holes 504 towards the capacitor 2, facilitating the heat dissipation of the capacitor 2 and making the stability of the capacitor 2 better.

[0028] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention. Any reference signs in the claims should not be construed as limiting the claims involved.

[0029] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A reactive power compensation controller for a smart grid, comprising a capacitor (2), a guide frame (6), a contactor (7), a sub-control switch (8), a main control switch (9) and a cabinet body (10); characterized in that, Inside the cabinet body (10), a capacitor fixing tooling (1) for supporting the capacitor (2) is installed, and the capacitor fixing tooling (1) drives the capacitor (2) to move up and down; a docking part (3) electrically connected to the sub-control switch (8) is fixed inside the cabinet body (10), and the docking part (3) is electrically connected to the capacitor (2); a heat dissipation component (5) for dissipating heat from the capacitor (2) is arranged inside the docking part (3), and a discharging part (4) for discharging the capacitor (2) is arranged on the docking part (3).

2. The reactive power compensation controller for smart grid according to claim 1, wherein: The contactor (7), the sub-control switch (8) and the main control switch (9) are all fixed on the cabinet body (10). The contactor (7) is electrically connected to the sub-control switch (8), the sub-control switch (8) is electrically connected to the main control switch (9). The capacitor fixing tooling (1) includes a chassis (101) and a first telescopic part (102) fixed to the bottom end of the chassis (101). The bottom end of the first telescopic part (102) is fixed on the bottom plate of the cabinet body (10). A plurality of capacitors (2) are installed on the top surface of the chassis (101), and the chassis (101) is slidably connected to the guiding frame (6).

3. The reactive power compensation controller for smart grid according to claim 2, characterized in that: Positioning columns (104) are arranged on the chassis (101), and the base of the capacitor (2) is engaged with the positioning columns (104). Heat dissipation fins (103) are installed at the bottom end of the chassis (101).

4. An intelligent power grid reactive power compensation controller according to claim 1, characterized in that: The docking part (3) includes a fixing frame (301) and a protective sleeve (302) arranged at the bottom end of the fixing frame (301). The protective sleeve (302) is sleeved on the top end of the capacitor (2).

5. An intelligent power grid reactive power compensation controller according to claim 4, characterized in that: A docking head (303) is fixed on the protective sleeve (302), and the docking head (303) is electrically connected to the contactor (7). A positioning head (304) is threadedly connected to the terminal of the capacitor (2). The top end of the positioning head (304) is a frustum-shaped structure, and the bottom end of the positioning head (304) is a hexagonal prism structure.

6. The reactive power compensation controller for smart grid according to claim 4, characterized in that: The heat dissipation component (5) includes a diversion channel (503) and air holes (504). A diversion channel (503) is arranged inside the fixing frame (301). Air holes (504) penetrate through both ends of the protective sleeve (302), and the air holes (504) are communicated with the diversion channel (503).

7. The reactive power compensation controller for smart grid according to claim 6, wherein: An air pump (501) is fixed on the fixing frame (301). A connecting pipe (502) is installed on the air pump (501). One end of the connecting pipe (502) away from the air pump (501) is fixed on the fixing frame (301) and extends into the diversion channel (503).

8. An intelligent power grid reactive power compensation controller according to claim 5, characterized in that: The discharge component (4) includes a support frame (403). A movable support frame (403) is provided inside the cabinet body (10). A guide rail (406) is installed at the bottom end of the support frame (403). Two moving blocks (407) are provided inside the guide rail (406). A discharge docking sleeve (408) is installed inside the moving block (407). The discharge docking sleeve (408) is electrically connected to the lamp cap (409). The lamp cap (409) is fixed to the support frame (403). A light bulb (410) is installed on the lamp cap (409). After the docking head (303) is separated from the positioning head (304), the support frame (403) moves, so that the discharge docking sleeve (408) is connected to the positioning head (304) one by one, and the light bulb (410) is electrically connected to the capacitor (2) to achieve discharge.

9. The reactive power compensation controller for smart grid according to claim 8, wherein: Guide blocks (411) are fixed on both sides of the moving block (407). The guide blocks (411) are slidably connected to the sliding grooves in the guide rail (406). A second telescopic member (413) is fixed between the moving block (407) and the support frame (403).

10. The power reactive power compensation controller for a smart grid according to claim 9, characterized in that: A moving member (405) is installed on the guide frame (6). The moving member (405) drives the slider (404) to slide. The slider (404) and the guide sleeve (412) are symmetrically fixed at both ends of the support frame (403). Two fixed seats (401) are fixed on both sides of the fixed frame (301). A slide bar (402) is installed on the fixed seat (401). The guide sleeve (412) is slidably connected to the slide bar (402).

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