A circuit breaker with a reactive power compensation function

Abstract

The application discloses a circuit breaker with a reactive power compensation function, which comprises a circuit breaker body, a reactive power compensation module and a communication interface unit arranged in the circuit breaker body, a man-machine interaction unit arranged on one side of the circuit breaker body, a switch arranged above the man-machine interaction unit on the one side of the circuit breaker body, and a metering assembly arranged below the switch on the outer wall of the circuit breaker body. The circuit breaker body can automatically record the number of automatic tripping, and can automatically record the manual tripping, so that the automatic tripping and the manual tripping can be recorded separately, the maintenance personnel can quickly understand the working condition of the circuit breaker body, the circuit breaker body can be conveniently maintained, the manual tripping operation can be completed by using a traction rope, the user does not need to manually touch the switch, the safety of the user can be improved, and the user will not worry about the electric shock caused by touching the switch with hands.

Description

Technical Field

[0001] This invention relates to the field of power equipment technology, specifically to a circuit breaker with reactive power compensation function. Background Technology

[0002] A circuit breaker is a switching device capable of closing, carrying, and interrupting current under normal circuit conditions, and capable of closing, carrying, and interrupting current under abnormal circuit conditions within a specified time. Circuit breakers are classified into high-voltage circuit breakers and low-voltage circuit breakers according to their application range. The boundary between high and low voltage is somewhat blurred; generally, those above 3KV are considered high-voltage electrical appliances. Circuit breakers can be used to distribute electrical energy, infrequently start asynchronous motors, and protect power lines and motors. When serious overloads, short circuits, or undervoltage faults occur, they can automatically disconnect the circuit. Their function is equivalent to a combination of a fuse switch and over / under-temperature relays. When the current is abnormal, the magnetic field generated by the large current overcomes the counterforce spring, the trip unit pulls the operating mechanism, and the switch trips instantaneously.

[0003] However, existing circuit breakers cannot automatically record tripping events. If someone manually resets the switch, maintenance personnel may not be aware of the tripping during routine inspections, leading to unforeseen safety hazards. Another traditional method of reactive power compensation involves installing a separate reactive power compensation cabinet on one side of the low-voltage outgoing line cabinet for centralized management in the distribution room. Because the equipment is relatively far from the distribution room, the energy-saving effect is not significant. Summary of the Invention

[0004] The purpose of this invention is to provide a circuit breaker with reactive power compensation function to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a circuit breaker with reactive power compensation function, comprising a circuit breaker body, wherein a reactive power compensation module and a communication interface unit are provided inside the circuit breaker body, a human-machine interaction unit is provided on one side of the circuit breaker body, a switch is provided on one side of the circuit breaker body above the human-machine interaction unit, and a counting component is provided on the outer wall of the circuit breaker body below the switch.

[0006] Furthermore, the counting component includes a connecting box, the inner wall of which is provided with a slidingly connected T-shaped pressing block, and an air cylinder is provided on the inner wall of the connecting box below the T-shaped pressing block. An air rod is provided at the bottom of the T-shaped pressing block, the air rod is connected to the air cylinder, one end of the air cylinder is provided with an air rod, the other end of the air cylinder is provided with a through rubber ball, one end of the air rod is provided with a traction rope, and one end of the traction rope is connected to the switch.

[0007] Furthermore, the inner wall of the connecting box is provided with an elliptical disk rotatably connected to one end of the second gas rod. Above the elliptical disk, the inner wall of the connecting box is provided with a ratchet wheel rotatably connected. The top of the elliptical disk is provided with a pawl that meshes with the ratchet wheel 1. The pawl 1 is hinged to the elliptical disk. The inner wall of the connecting box is provided with a hinged anti-reverse pawl 1 on one side of the ratchet wheel 1. The inner wall of the ratchet wheel 1 is provided with a rotating shaft 1. One end of the rotating shaft 1 extends to the outer wall of the connecting box and is provided with a handle 1. The outer wall of the connecting box is provided with a scale 1 around the rotating shaft 1. The outer wall of the rotating shaft 1 is provided with a scale 1. The automatic circuit breaker can be recorded. The handle 1 can drive the rotating shaft 1 to rotate, thereby driving the scale 1 to move. The scale 1 can be moved to the 0 mark to clear the record.

[0008] Furthermore, the first rubber ball is located outside the connecting box, and the second rubber ball, which communicates with the air cylinder, is located inside the connecting box. A T-shaped push block is slidably connected above the second rubber ball on the inner wall of the connecting box. A ratchet wheel is rotatably connected to one side of the T-shaped push block on the inner wall of the connecting box. A pawl is hinged to one side of the T-shaped push block and engages with the second ratchet wheel. An anti-reverse pawl is hinged to the inner wall of the connecting box and engages with the second ratchet wheel. A rotating shaft is located on the inner wall of the second ratchet wheel. One end of the rotating shaft extends to the outer wall of the connecting box and is equipped with a handle. A scale is fitted around the outer ring of the rotating shaft on the outer wall of the connecting box. A scale is also provided on the outer wall of the rotating shaft. The operation of manually cutting off the circuit breaker can be recorded. The rotating shaft can be rotated by the handle, which can move the scale to the 0 mark to clear the record.

[0009] Furthermore, the T-shaped pressing block is symmetrically provided with connecting blocks on both sides, and a sleeve is provided on the top of the connecting block. The inner wall of the connecting box is provided with a sliding rod that matches the sleeve, and a spring is sleeved on the outer wall of the sleeve. When the T-shaped pressing block is not under pressure, the rebound force generated by the stretching of the spring will drive the connecting block to move upward, and the connecting block will drive the T-shaped pressing block to move upward, realizing the automatic reset of the T-shaped pressing block. Moreover, the sleeve slides on the outside of the sliding rod, which can provide a guiding effect.

[0010] Furthermore, the reactive power compensation module includes a power supply unit, a measurement and control unit, a fuse protection unit, a switching unit, and a parallel power capacitor unit. The output terminal of the fuse protection unit is electrically connected to the power input terminal of the switching unit, the output terminal of the switching unit is electrically connected to the input terminal of the parallel power capacitor unit, and the control signal output terminal of the measurement and control unit is electrically connected to the drive signal input terminal of the switching unit. The switching unit can adopt a composite switch method or a contactless switch method. The contactless switch method can achieve fast switching response and realize compensation for rapidly changing load reactive power. The parallel power capacitor unit can adopt a delta-connected common compensation capacitor, a "YN"-type connected separate compensation capacitor, or a mixed compensation combination of delta-connected common compensation capacitor and "YN"-type connected separate compensation capacitor.

[0011] Furthermore, the output terminal of the measurement and control unit is electrically connected to the input terminals of the communication interface unit and the human-machine interaction unit, respectively. The human-machine interaction unit uses an LCD or digital tube display and has three buttons for viewing measurement parameters and setting control parameters, etc. The communication interface unit enables communication with external devices, facilitating remote access or interconnection between modules, and facilitating parallel expansion.

[0012] Furthermore, the circuit breaker body is equipped with an over-temperature detection alarm unit and a cooling fan. The over-temperature detection alarm unit is electrically connected to the measurement and control unit. The over-temperature detection alarm unit monitors the internal temperature of the circuit breaker body in real time through a temperature detection sensor. By installing a temperature detection sensor in the molded case circuit breaker body, the circuit breaker temperature is monitored in real time. A cooling fan is installed at the bottom of the circuit breaker's outgoing terminals. When the temperature exceeds 50 degrees Celsius, the fan automatically starts to accelerate the discharge of internal hot air. When the temperature exceeds 80 degrees Celsius, an over-temperature alarm is displayed on the screen.

[0013] Furthermore, the reactive power compensation module is connected to the outgoing terminal of the circuit breaker body through the compensation interface unit. It is generally connected at the outgoing terminal of the circuit breaker and adopts a self-locking structural component. The outgoing terminal of the compensation interface unit is equipped with three primary current transformers, which mainly measure the current passing through the circuit breaker. The lower end of the primary current transformer is designed with a terminal for the connection of the load cable.

[0014] Furthermore, the circuit breaker body is a molded case circuit breaker, and the circuit breaker body can be a three-phase three-wire type or a three-phase four-wire type; the reactive power compensation current is configured according to 15% of the rated current of the circuit breaker.

[0015] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0016] 1. This invention, by setting up a T-shaped pressing block, an air cylinder, an air rod, an elliptical disc, a ratchet, a pawl, a dial, and a scale, can automatically record the number of times the circuit breaker body automatically trips. Through a rubber ball, a traction rope, a T-shaped push block, a second ratchet, a second pawl, a second dial, and a second scale, it can automatically record the tripping times simultaneously with manual tripping. This allows for separate recording of automatic tripping and manual tripping, enabling maintenance personnel to quickly understand the working status of the circuit breaker body, facilitating maintenance. Furthermore, the manual tripping operation can be completed using the traction rope, eliminating the need for the user to manually touch the switch, increasing user safety and eliminating concerns about electric shock from touching the switch.

[0017] 2. This invention can effectively reduce reactive current, improve the power factor of power distribution, and realize load switching and protection. Moreover, the layout of this device is reasonable, the appearance is beautiful, the integration is high, the cost is low, the life is long, and it is energy-saving and environmentally friendly. A single unit can basically meet the reactive power compensation and management needs, and it can also be paralleled for capacity expansion, with a wide range of application prospects. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a front view of the entire invention;

[0021] Figure 3 This is a front sectional view of the connecting box of the present invention;

[0022] Figure 4 This is a schematic diagram of the circuit breaker body of the present invention at one angle;

[0023] Figure 5 This is a schematic diagram of the circuit breaker body of the present invention from another angle;

[0024] Figure 6 This is the present invention. Figure 3 Enlarged view of point A in the middle;

[0025] Figure 7 This is a topology diagram of the reactive power compensation module of the present invention;

[0026] Figure 8 This is a part of the circuit of the measurement and control unit of the present invention. Figure 1 ;

[0027] Figure 9 This is a part of the circuit of the measurement and control unit of the present invention. Figure 2 ;

[0028] Figure 10 This is a circuit diagram of the power supply unit of the present invention;

[0029] Figure 11 This is a circuit diagram of the human-computer interaction unit of the present invention;

[0030] Figure 12 This is a circuit diagram of the communication interface unit of the present invention;

[0031] Figure 13 This is a circuit diagram of the switching unit of the present invention;

[0032] Figure 14 This is a circuit diagram showing the connection of the fuse protection unit, the switching unit, and the parallel power capacitor unit of this invention;

[0033] Figure 15 This is a circuit diagram of the circuit breaker over-temperature detection and alarm unit of the present invention;

[0034] In the diagram: 1. Circuit breaker body; 2. Reactive power compensation module; 3. Communication interface unit; 4. Human-machine interface unit; 5. Switch; 6. Counting component; 7. Connection box; 8. T-shaped pressing block; 9. Air cylinder; 10. Air rod one; 11. Air rod two; 12. Rubber ball one; 13. Traction rope; 14. Elliptical disc; 15. Ratchet one; 16. Pawl one; 17. Anti-reverse pawl one; 18. Rotating shaft one; 19. Turning handle one; 20. Scale one; 21. Scale one; 22. T-shaped push block; 23. 24. Wheel 2; 25. Pawl 2; 26. Anti-reverse pawl 2; 27. Shaft 2; 28. Throttle 2; 29. ​​Dial 2; 20. Scale 2; 31. Sleeve; 32. Slide rod; 33. Spring 1; 34. Power supply unit; 35. Measurement and control unit; 36. Fuse protection unit; 37. Switching unit; 38. Parallel power capacitor unit; 39. Circuit breaker over-temperature detection alarm unit; 40. Cooling fan; 41. Temperature detection sensor; 42. Compensation interface unit; 43. Rubber ball 2. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Please see Figures 1-6This invention provides a technical solution: a circuit breaker with reactive power compensation function, comprising a circuit breaker body 1, wherein a reactive power compensation module 2 and a communication interface unit 3 are provided inside the circuit breaker body 1, a human-machine interaction unit 4 is provided on one side of the circuit breaker body 1, a switch 5 is provided on one side of the circuit breaker body 1 above the human-machine interaction unit 4, a counting component 6 is provided on the outer wall of the circuit breaker body 1 below the switch 5, the counting component 6 includes a connecting box 7, a slidingly connected T-shaped pressing block 8 is provided on the inner wall of the connecting box 7, an air cylinder 9 is provided on the inner wall of the connecting box 7 below the T-shaped pressing block 8, and an air rod 10 is provided at the bottom of the T-shaped pressing block 8. A rod 10 is connected to the air cylinder 9. One end of the air cylinder 9 has a second air rod 11, and the other end has a through rubber ball 12. One end of the second air rod 11 has a traction rope 13, which is connected to the switch 5. An elliptical disk 14 is rotatably connected to one end of the second air rod 11 on the inner wall of the connecting box 7. Above the elliptical disk 14, a ratchet 15 is rotatably connected to the inner wall of the connecting box 7. A pawl 16, engaging with the ratchet 15, is located at the top of the elliptical disk 14. The pawl 16 is hinged to the elliptical disk 14. An anti-reverse ratchet is hinged to one side of the ratchet 15 on the inner wall of the connecting box 7. The ratchet 15 has a rotating shaft 18 on its inner wall. One end of the rotating shaft 18 extends to the outer wall of the connecting box 7 and has a handle 19. The outer wall of the connecting box 7 has a scale 20 surrounding the rotating shaft 18. The outer wall of the rotating shaft 18 has a scale 21. The rubber ball 12 is located outside the connecting box 7. The connecting box 7 has a rubber ball 42 that communicates with the air pump 9 inside. The inner wall of the connecting box 7 has a slidingly connected T-shaped push block 22 above the rubber ball 42. The inner wall of the connecting box 7 has a rotatably connected ratchet 23 on one side of the T-shaped push block 22. The T-shaped push block 22 is hinged on one side. The connection box 7 is provided with a pawl 24 that meshes with the ratchet 23. The inner wall of the connection box 7 is hinged with an anti-reverse pawl 25 that meshes with the ratchet 23. The inner wall of the ratchet 23 is provided with a rotating shaft 26. One end of the rotating shaft 26 extends to the outer wall of the connection box 7 and is provided with a handle 27. The outer wall of the connection box 7 is provided with a dial 28 around the rotating shaft 26. The outer wall of the rotating shaft 26 is provided with a scale 29. The T-shaped pressing block 8 is provided with connecting blocks symmetrically on both sides. The top of the connecting block is provided with a sleeve 30. The inner wall of the connection box 7 is provided with a sliding rod 31 that matches the sleeve 30. The outer wall of the sleeve 30 is provided with a spring 32.

[0037] The specific implementation method is as follows: During use, when a short circuit occurs in the circuit breaker body 1, the switch 5 automatically disconnects, and one end moves downward, exerting pressure on the T-shaped pressing block 8 below it, causing it to move downward. The T-shaped pressing block 8 will drive the air rod 10 to move into the air cylinder 9. Since the air cylinder 9 is in a state of gas saturation, when the air rod 10 moves inward, it will change the pressure in the air cylinder 9. Because the force required for the deformation of the rubber ball 12 and the rubber ball 42 is relatively large, but the force generated by the elliptical disk 14 on the air rod 11 is relatively small, when the air rod 10 moves downward, it will push the air rod 11 into the air cylinder 9. When pushed from the outside, one end of the air rod 11 will push the elliptical disk 14 to rotate. The elliptical disk 14 will drive the pawl 16 at its top to rotate, which in turn drives the ratchet 15 to rotate. The ratchet 15 will drive the rotating shaft 18 to rotate, which will then drive the scale 21 to align with the numbers on the dial 20. This allows for the automatic recording of the number of times the circuit breaker body 1 has automatically tripped. When it is necessary to manually pull down the switch 5, the rubber ball 12 can be pressed to compress all the gas in the rubber ball 12 into the air cylinder 9. This will still push the air rod 11 outward. This will cause one end of the traction rope 13 to move. Since the traction rope 13 passes through the T-shaped pressing block 8, it will pass through the middle of it. One end of the traction rope 13 will pull the switch 5 to move, pulling down the switch 5 and putting the circuit breaker body 1 into a short-circuit state. There is no need to manually touch the switch 5, which can increase the user's sense of security and make the user not worry about electric shock from touching the switch 5. At the same time, when the rubber ball 12 inflates the air cylinder 9, it will also cause the rubber ball 22 to deform. At this time, the rubber ball 22 will push the T-shaped push block 22 upward, and the T-shaped push block 22 will drive the pawl 24 to move. 24 will drive ratchet 23 to rotate, ratchet 23 will drive shaft 26 to rotate, shaft 26 will drive scale 29 to rotate, scale 29 will align with a certain number on dial 28, thus automatically recording the number of times the circuit breaker 5 has automatically tripped. At this time, the number on dial 28 needs to be subtracted from the number on dial 1 to get the number of times the circuit breaker 5 has automatically tripped. This allows for separate recording of automatic tripping and manual tripping, enabling maintenance personnel to quickly understand the working status of the circuit breaker body 1, thereby facilitating the maintenance of the circuit breaker body 1.

[0038] Please see Figures 4-5 and Figures 7-15This invention provides a technical solution: a circuit breaker with reactive power compensation function. The reactive power compensation module 2 further includes a power supply unit 33, a measurement and control unit 34, a fuse protection unit 35, a switching unit 36, and a parallel power capacitor unit 37. The output terminal of the fuse protection unit 35 is electrically connected to the power input terminal of the switching unit 36, and the output terminal of the switching unit 36 ​​is electrically connected to the input terminal of the parallel power capacitor unit 37. The control signal output terminal of the measurement and control unit 34 is electrically connected to the drive signal input terminal of the switching unit 36. The circuit breaker body 1 mainly realizes the switching of the load power supply and the overload protection and short circuit protection of the load. The reactive power compensation unit uses a small-capacity capacitor to achieve refined reactive power compensation. A human-machine interaction unit 4 is provided to realize the display and viewing of measurement parameters and the setting of control parameters. At the same time, a communication interface unit is provided to realize interactive communication with external devices, which facilitates remote access or modularization. The circuit breaker is interconnected with other circuit breakers, facilitating parallel expansion. The entire device has a reasonable structure, an attractive appearance, and a large single-unit compensation capacity. The output of the measurement and control unit 34 is electrically connected to the input of the communication interface unit 3 and the human-machine interaction unit 4, respectively. The circuit breaker body 1 is equipped with a circuit breaker over-temperature detection alarm unit 38 and a cooling fan 39. The circuit breaker over-temperature detection alarm unit 38 is electrically connected to the measurement and control unit 34. The circuit breaker over-temperature detection alarm unit 38 monitors the internal temperature of the circuit breaker body 1 in real time through a temperature detection sensor 40. The reactive power compensation module 2 is connected to the output terminal of the circuit breaker body 1 through a compensation interface unit 41. The output terminal of the compensation interface unit 41 is equipped with three primary current transformers. The lower end of the primary current transformer is designed with a terminal for load cable connection. The circuit breaker body 1 is a molded case circuit breaker and can be a three-phase three-wire or three-phase four-wire type.

[0039] The specific implementation method is as follows: In use, the circuit breaker body 1 and the reactive power compensation unit are connected through the compensation interface unit 41. The compensation interface unit 41 includes a reactive power compensation parallel copper busbar, an outgoing load terminal, and a primary current sampling transformer, which is used to measure the load current. A human-machine interface unit is installed and fixed on the outer casing of the compensation interface unit 41. The human-machine interface unit is connected to the measurement and control unit 34 in the reactive power compensation unit. The human-machine interface unit uses a digital tube or LCD screen to display measurement parameters such as voltage, current, power factor, and reactive power, as well as capacitor switching status. It has three buttons for switching measurement parameters, viewing the interface, and setting control parameters, etc. The bottom of the circuit breaker body 1 is the reactive power compensation unit, which includes a power supply unit 33, a fuse protection unit 35, a measurement and control unit 34, and a switching... The circuit breaker includes a switch unit 36 ​​and a parallel power capacitor unit 37; a power supply unit 33 supplies power to the measurement and control unit 34, the switching unit 36, and the human-machine interface unit; a fuse protection unit 35 is connected in series between the switching unit 36 ​​and the compensation interface unit 41 to provide rapid protection against capacitor faults; the lower end of the switching unit 36 ​​is connected to the parallel power capacitor unit; the circuit breaker over-temperature detection alarm unit 38 monitors the circuit breaker temperature in real time by installing a temperature detection sensor 40 on the molded case circuit breaker body 1; a cooling fan 39 is installed at the bottom of the circuit breaker's outgoing terminals; when the temperature exceeds 50 degrees Celsius, the fan automatically starts to accelerate the exhaust of internal hot air; when the temperature exceeds 80 degrees Celsius, an over-temperature alarm is displayed on the screen; and a communication interface unit enables interactive communication with external devices, facilitating remote access or communication interconnection between circuit breakers with reactive power compensation, and facilitating cascading expansion.

[0040] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A circuit breaker with a function of reactive power compensation, comprising a circuit breaker body (1), characterized in that: The circuit breaker body (1) is internally provided with a reactive compensation module (2) and a communication interface unit (3), one side of the circuit breaker body (1) is provided with a human-computer interaction unit (4), one side of the circuit breaker body (1) is provided with a switch (5) above the human-computer interaction unit (4), and the outer wall of the circuit breaker body (1) is provided with a meter assembly (6) below the switch (5); the meter assembly (6) comprises a connecting box (7), a T-shaped pressing block (8) is slidably arranged on the inner wall of the connecting box (7), an air cylinder (9) is arranged on the inner wall of the connecting box (7) below the T-shaped pressing block (8), an air rod one (10) is arranged at the bottom of the T-shaped pressing block (8), the air rod one (10) is connected with the air cylinder (9), one end of the air cylinder (9) is provided with an air rod two (11), the other end of the air cylinder (9) is provided with a through rubber ball one (12), one end of the air rod two (11) is provided with a traction rope (13), one end of the traction rope (13) is connected with the switch (5); an elliptical disc (14) is rotatably arranged on the inner wall of the connecting box (7) at one end of the air rod two (11), a ratchet one (15) is rotatably arranged on the inner wall of the connecting box (7) above the elliptical disc (14), a pawl one (16) is arranged on the top of the elliptical disc (14) and engaged with the ratchet one (15), the pawl one (16) is hinged with the elliptical disc (14), a reverse prevention pawl one (17) is hinged on one side of the ratchet one (15) on the inner wall of the connecting box (7), a rotating shaft one (18) is arranged on the inner wall of the ratchet one (15), one end of the rotating shaft one (18) extends to the outer wall of the connecting box (7) and is provided with a rotating handle one (19), a scale disc one (20) is arranged on the outer wall of the connecting box (7) and surrounds the rotating shaft one (18), and a scale ruler one (21) is arranged on the outer wall of the rotating shaft one (18); the rubber ball one (12) is located outside the connecting box (7), a rubber ball two (42) is arranged in the connecting box (7) and penetrates the air cylinder (9), a T-shaped push block (22) is slidably arranged on the inner wall of the connecting box (7) above the rubber ball two (42), a ratchet two (23) is rotatably arranged on one side of the T-shaped push block (22) on the inner wall of the connecting box (7), a pawl two (24) is hinged on one side of the T-shaped push block (22) and engaged with the ratchet two (23), a reverse prevention pawl two (25) is hinged on the inner wall of the connecting box (7) and engaged with the ratchet two (23), a rotating shaft two (26) is arranged on the inner wall of the ratchet two (23), one end of the rotating shaft two (26) extends to the outer wall of the connecting box (7) and is provided with a rotating handle two (27), a scale disc two (28) is arranged on the outer wall of the connecting box (7) and surrounds the rotating shaft two (26), and a scale ruler two (29) is arranged on the outer wall of the rotating shaft two (26).

2. The circuit breaker with reactive power compensation function according to claim 1, characterized in that: The T-shaped pressing block (8) is symmetrically provided with a connecting block on both sides, the top of the connecting block is provided with a sleeve (30), the inner wall of the connecting box (7) is provided with a sliding rod (31) matched with the sleeve (30), and the outer wall of the sleeve (30) is sleeved with a spring (32).

3. The circuit breaker with reactive power compensation function according to claim 1, characterized in that: The reactive compensation module (2) comprises a power supply unit (33), a measurement and control unit (34), a fuse protection unit (35), a switching switch unit (36) and a parallel power capacitor unit (37), the output end of the fuse protection unit (35) is electrically connected with the power input end of the switching switch unit (36), the output end of the switching switch unit (36) is electrically connected with the input end of the parallel power capacitor unit (37), and the control signal output end of the measurement and control unit (34) is electrically connected with the driving signal input end of the switching switch unit (36).

4. The circuit breaker with the function of reactive power compensation according to claim 3, characterized in that: The output end of the measurement and control unit (34) is electrically connected with the input end of the communication interface unit (3) and the human-computer interaction unit (4) respectively.

5. The circuit breaker with the function of reactive power compensation according to claim 3, characterized in that: The circuit breaker body (1) is internally provided with a circuit breaker over-temperature detection alarm unit (38) and a cooling fan (39), the circuit breaker over-temperature detection alarm unit (38) is electrically connected with the measurement and control unit (34), and the circuit breaker over-temperature detection alarm unit (38) monitors the internal temperature of the circuit breaker body (1) in real time through a temperature detection sensor (40).

6. The circuit breaker with reactive power compensation function according to claim 1, characterized in that: The reactive compensation module (2) is connected with the outgoing line end of the circuit breaker body (1) through a compensation interface unit (41), the outgoing line end of the compensation interface unit (41) is provided with three primary current transformers, and the lower end of the primary current transformer is designed with a wiring end for connecting a load cable.

7. The circuit breaker with reactive power compensation function according to claim 1, characterized in that: The circuit breaker body (1) is a molded case circuit breaker, and the circuit breaker body (1) adopts a three-phase three-wire type or a three-phase four-wire type.

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