A high-voltage fee control device

Abstract

The application provides a high-voltage fee control device which can automatically realize remote power-off function according to the residual power available for a user. The high-voltage fee control device comprises a circuit breaker and a fee control micro terminal, and further comprises an isolating switch connected with an incoming line end of the circuit breaker, a first current transformer with one end electrically connected with the fee control micro terminal and the other end connected between the isolating switch and the incoming line end of the circuit breaker, a second current transformer connected between an outgoing line end of the circuit breaker and the fee control micro terminal, a voltage transformer with one end electrically connected with the fee control micro terminal and the other end connected between the isolating switch and the incoming line end of the circuit breaker, a communication assembly electrically connected with the fee control micro terminal, a forwarding control interface connected between the fee control micro terminal and the circuit breaker, and a high-voltage switch electrically connected with the forwarding control interface.

Description

Technical Field

[0001] This invention relates to the field of electricity metering equipment technology, and specifically to a high-voltage fee control device. Background Technology

[0002] In the power distribution business, electricity metering devices are an important part of the power grid. With the periodic replacement of smart meters, the collection of electricity consumption information for residential users has basically achieved full coverage. However, some dedicated transformer users have not installed high-voltage fee control switches, making it impossible to perform remote overdue payment tripping operations. This requires on-site manual power disconnection, which consumes manpower, material resources, and financial resources.

[0003] According to the Chinese invention patent CN206020500U, a high-voltage remote prepaid metering device is disclosed, including a housing. The front or rear panel of the housing consists of a pair of double doors. The interior of the housing is divided into four chambers by a cross-shaped partition: a metering chamber, an incoming line CT chamber, a prepaid switch chamber, and a user switch chamber. This high-voltage remote prepaid metering device solves the problem of limited space in traditional metering boxes. The added prepaid switch function facilitates automatic power supply cutoff for users with insufficient balances, ensuring timely collection of electricity fees. However, this patent still requires manual remote control of the data acquisition and control terminal to disconnect the prepaid switch, failing to address the need for manual intervention in remote prepaid tripping operations, thus still requiring manpower. Summary of the Invention

[0004] In view of this, embodiments of the present invention aim to provide a high-voltage fee control device that can automatically realize remote power cut-off function based on the user's remaining available power.

[0005] According to one aspect of the present invention, a high-voltage fee control device is provided in one embodiment of the present invention, comprising a circuit breaker and a fee control micro-terminal. The high-voltage fee control device is communicatively connected to a cloud control system. The high-voltage fee control device further comprises: a disconnecting switch connected to the incoming terminal of the circuit breaker; a first current transformer, one end of which is electrically connected to the fee control micro-terminal, and the other end of which is connected between the disconnecting switch and the incoming terminal of the circuit breaker; a second current transformer connected between the outgoing terminal of the circuit breaker and the fee control micro-terminal; a voltage transformer, one end of which is electrically connected to the fee control micro-terminal, and the other end of which is connected between the disconnecting switch and the incoming terminal of the circuit breaker; a communication component electrically connected to the fee control micro-terminal, the communication component being used for communicative connection with the cloud control system; a forwarding control interface connected between the fee control micro-terminal and the circuit breaker; and a high-voltage switch electrically connected to the forwarding control interface and connected to the outgoing terminal of the circuit breaker.

[0006] In one embodiment, the high-voltage switch includes: an insulating cylinder; an inlet terminal, the inlet terminal being connected through to a first end of the insulating cylinder; an outlet terminal, the outlet terminal being connected through to a second end of the insulating cylinder; a static conductive element is provided inside the insulating cylinder, the first end of the static conductive element being connected to the end of the inlet terminal located inside the insulating cylinder; a moving conductive element is provided inside the insulating cylinder, the first end of the moving conductive element being disposed opposite to the second end of the static conductive element; a flexible cable is provided inside the insulating cylinder, the first end of the flexible cable being connected to the second end of the moving conductive element, and the second end of the flexible cable being connected to the end of the outlet terminal located inside the insulating cylinder; wherein, a piston is sleeved on the moving conductive element, and the outer wall of the piston is slidably sealed to the inner wall of the insulating cylinder.

[0007] In one embodiment, the high-voltage fee control device further includes: a first air pipe connector, the first end of which is connected to the side of the insulating cylinder where the inlet terminal is located; a second air pipe connector, the first end of which is connected to the side of the insulating cylinder where the outlet terminal is located; and a pneumatic control system, the second end of which is connected to the pneumatic control system.

[0008] In one embodiment, the high-voltage fee control device further includes: a stationary contact mounted on the second end of the stationary conductive element; and a moving contact mounted on the first end of the moving conductive element; wherein the stationary contact and the moving contact are arranged opposite to each other.

[0009] In one embodiment, the high-voltage fee control device further includes: an arc-extinguishing grid assembly disposed within the insulating cylinder, with the arc-extinguishing grid assembly located on the side near the incoming terminal; an isolation cylinder disposed between the piston and the inner wall of the insulating cylinder, the isolation cylinder being sealed to the piston, and a cylindrical air gap being formed between the isolation cylinder and the inner wall of the insulating cylinder, a first end of the isolation cylinder communicating with the first air pipe connector, and a second end of the isolation cylinder communicating with the second air pipe connector; and a shielding cover disposed between the arc-extinguishing grid assembly and the inner wall of the insulating cylinder.

[0010] In one embodiment, the high-voltage fee control device further includes a heat sink, which is disposed on the outer wall of the insulating cylinder and the position of the heat sink corresponds to the position of the shield.

[0011] In one embodiment, both the first and second ends of the isolation cylinder are provided with vent holes, and the first and second air pipe connectors are connected to the isolation cylinder through the vent holes; a buffer slip ring is slidably sealed inside the isolation cylinder.

[0012] In one embodiment, the arc-extinguishing grid assembly is slidably connected to the shield, and a pull rod is provided between the buffer slip ring and the arc-extinguishing grid assembly.

[0013] In one embodiment, the arc-extinguishing grid assembly includes at least two annular grids, with sliders fixedly connected to both ends of the annular grids; the high-voltage fee control device further includes a slide rail, which is fixedly connected to the inner wall of the shield away from the insulating cylinder; the sliders are slidably connected to the slide rail, and a support spring is provided between adjacent sliders.

[0014] In one embodiment, a temperature sensor, a pressure sensor, a miniature pressure relief valve, and an electric adjustment module are fixedly mounted on the insulating cylinder. The electric adjustment module is electrically connected to the miniature pressure relief valve, and the temperature sensor, pressure sensor, and electric adjustment module are electrically connected to the cost control micro-terminal.

[0015] The high-voltage fee control device provided in this invention forms an intelligent combined transformer through a fee control micro-terminal, a first current transformer, a second current transformer, and a voltage transformer. It acquires circuit voltage and current information flowing through the circuit breaker, calculates line losses on the high-voltage transmission line and the cumulative electricity consumed by the user. When the remaining usable electricity is low, it can use the communication component to remind or control the user to recharge in advance. If necessary, it can control the circuit breaker to conduct or cut off through the forwarding control interface and high-voltage switch to realize remote power cut-off function without human intervention, saving manpower, material resources, and financial resources, and realizing payment reminders, thereby effectively solving the problem of existing fee control business. Attached Figure Description

[0016] Figure 1 The diagram shown is a structural schematic of a high-voltage fee control device provided in an exemplary embodiment of this application.

[0017] Figure 2 The diagram shown is a schematic diagram of the high-voltage switch closing structure provided in an exemplary embodiment of this application.

[0018] Figure 3 The diagram shown is a schematic diagram of the high-voltage switch opening structure provided in an exemplary embodiment of this application.

[0019] Figure 4 The diagram shown is a schematic diagram of the high-voltage switch closing structure provided in another exemplary embodiment of this application.

[0020] Figure 5 The diagram shown is a schematic diagram of the high-voltage switch opening structure provided in another exemplary embodiment of this application.

[0021] Explanation of reference numerals in the attached diagram: 1. Inlet terminal; 2. Outlet terminal; 3. Static conductive component; 4. Moving conductive component; 5. Insulating cylinder; 6. Flexible cable; 7. Static contact; 8. Moving contact; 9. Piston; 10. First air pipe connector; 11. Second air pipe connector; 12. Arc extinguishing grid assembly; 13. Isolation cylinder; 14. Shielding cover; 15. Cylindrical air jacket; 16. Heat sink; 17. Vent hole; 18. Buffer slip ring; 19. Pull rod; 20. Slide 21. Block; 22. Slide rail; 23. Support spring; 24. Miniature pressure relief valve; 25. Circuit breaker; 26. Prepaid micro-terminal; 27. Cloud control system; 28. Disconnecting switch; 29. ​​First current transformer; 30. Second current transformer; 31. Voltage transformer; 32. Communication component; 33. Forwarding control interface; 34. High voltage switch; 35. Power grid; 36. User load; 37. Intelligent combined transformer; 38. Pneumatic control system. Detailed Implementation

[0022] 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.

[0023] Furthermore, in exemplary embodiments, since the same reference numerals denote the same components having the same structure or the same steps of the same method, if one embodiment has been described exemplarily, then in other exemplary embodiments only structures or methods different from those described in the embodiment will be described. When a component is described as being "connected" to another component, that one component may be "directly connected" to the other component or "electrically connected" to the other component via a third component. Moreover, unless explicitly stated otherwise, the term "comprising" and its corresponding terms should be understood only to include the stated component and should not be construed as excluding any other component.

[0024] Figure 1 The diagram shown is a structural schematic of a high-voltage fee control device provided in an exemplary embodiment of this application. Figure 1 As shown, the high-voltage fee control device includes a circuit breaker 24 and a fee control micro-terminal 25. The high-voltage fee control device is communicatively connected to the cloud control system 26. The high-voltage fee control device also includes: a disconnecting switch 27, which is connected to the incoming terminal of the circuit breaker 24; a first current transformer 28, one end of which is electrically connected to the fee control micro-terminal 25, and the other end of which is connected between the disconnecting switch 27 and the incoming terminal of the circuit breaker 24; and a second current transformer 29, which is connected between the outgoing terminal of the circuit breaker 24 and the fee control micro-terminal 25. A voltage transformer 30 is electrically connected at one end to the prepaid micro-terminal 25, and at the other end to the incoming line of the disconnector 27 and the circuit breaker 24; a communication component 31 is electrically connected to the prepaid micro-terminal 25 and is used to communicate with the cloud control system 26; a forwarding control interface 32 is connected between the prepaid micro-terminal 25 and the circuit breaker 24; and a high-voltage switch 33 is electrically connected to the forwarding control interface 32 and to the outgoing line of the circuit breaker 24.

[0025] A circuit breaker 24 is installed between the power grid 34 and the user load 35. The circuit breaker 24 is an electrical device used to interrupt current in a circuit, typically used to protect electrical systems from faults such as overloads and short circuits. The circuit breaker 24 disconnects the circuit by controlling the flow of current. When an overload or short circuit occurs in the circuit, the circuit breaker 24 senses the abnormal current and quickly disconnects the circuit to prevent the fault from escalating. The prepayment micro-terminal 25 is powered on and connected to a first current transformer 28, a voltage transformer 30, a second current transformer 29, and a communication component 31. A current transformer is a sensor used to measure current, commonly used in power systems to monitor and protect equipment. A current transformer measures the magnitude of current by inducing a magnetic field generated by the current. A voltage transformer 30 is a sensor used to measure voltage, typically used in conjunction with a current transformer to monitor and protect equipment in a power system. Similar to a current transformer, a voltage transformer 30 measures the magnitude of voltage by inducing a magnetic field generated by the voltage.

[0026] A first current transformer 28 and a voltage transformer 30 are disposed between the disconnecting switch 27 and the incoming terminals of the circuit breaker 24. The first current transformer 28 is used to measure the current between the disconnecting switch 27 and the incoming terminals of the circuit breaker 24. A second current transformer 29 is disposed between the outgoing terminal of the circuit breaker 24 and the prepaid micro-terminal 25. The second current transformer 29 is used to measure the current between the outgoing terminal of the circuit breaker 24 and the high-voltage switch 33. A communication component 31 is used for communication connection between the prepaid micro-terminal 25 and the cloud control system 26. A forwarding control interface 32 is electrically connected between the prepaid micro-terminal 25 and the circuit breaker 24. The forwarding control interface 32 is typically used for controlling and managing data and command transmission in a power system, and can help realize remote monitoring, data exchange, and intelligent control. In this embodiment, the forwarding control interface 32 can forward the control signal of the Type III special transformer to the circuit breaker 24 to realize remote control of the circuit breaker 24.

[0027] The intelligent combined transformer 36 is formed by the prepaid micro-terminal 25, the first current transformer 28, the second current transformer 29, and the voltage transformer 30. It collects the power at the input terminal and the output current at the output terminal of the circuit breaker 24. The communication component 31 sends signals to the cloud control system 26. It can promptly alarm when the circuit breaker 24 leaks current. The high-voltage prepaid device can accurately monitor the user's power consumption. When the user is in arrears, it can remotely control the circuit breaker 24 to disconnect and cut off the power. After the user pays the bill, it can control the circuit breaker 24 to close and restore power. During maintenance, the circuit breaker 24 can cut off the fault current to protect the line and equipment from damage. The input terminal of the circuit breaker 24 in the power grid 34 is equipped with an isolating switch 27. The isolating switch 27 is used to isolate the power supply during equipment maintenance and form a clear and reliable disconnection point to ensure the safety of maintenance personnel. The prepaid micro-terminal 25 connects the various functional components together to form a fully functional prepaid system. The forwarding control interface 32 is electrically connected to a high-voltage switch 33, which is located at the output terminal of the circuit breaker 24. The high-voltage switch 33 is used for circuit control in case of circuit breaker 24 failure or manual closing, thereby improving the reliability and maintenance-free performance of the high-voltage switch 33.

[0028] Figure 2 The diagram shown is a schematic representation of the structure of a high-voltage switch closing according to an exemplary embodiment of this application. Figure 2 As shown, the high-voltage switch may include: an insulating cylinder 5; an inlet terminal 1, which is connected through to the first end of the insulating cylinder 5; an outlet terminal 2, which is connected through to the second end of the insulating cylinder 5; a static conductive element 3 is provided inside the insulating cylinder 5, with the first end of the static conductive element 3 connected to the end of the inlet terminal 1 located inside the insulating cylinder 5; a moving conductive element 4 is provided inside the insulating cylinder 5, with the first end of the moving conductive element 4 opposite to the second end of the static conductive element 3; a flexible cable is provided inside the insulating cylinder 5, with the first end of the flexible cable connected to the second end of the moving conductive element 4, and the second end of the flexible cable connected to the end of the outlet terminal 2 located inside the insulating cylinder 5; wherein, a piston 9 is sleeved on the moving conductive element 4, and the outer wall of the piston 9 is slidably sealed to the inner wall of the insulating cylinder 5.

[0029] The insulating cylinder 5 is the outer shell of the entire high-voltage switch. The left end (first end) of the insulating cylinder 5 is connected to the inlet terminal 1, and the right end of the inlet terminal 1 is connected through the insulating cylinder 5. The right end (second end) of the insulating cylinder 5 is connected to the outlet terminal 2, and the left end of the outlet terminal 2 is connected through the insulating cylinder 5. The right end of the inlet terminal 1, located inside the insulating cylinder 5, is connected to a stationary conductive element 3, which is electrically connected to the inlet terminal 1. The left end of the outlet terminal 2, located inside the insulating cylinder 5, is connected to a moving conductive element 4, which is electrically connected to the outlet terminal 2 via a flexible cable. The moving conductive element 4 and the stationary conductive element 3 are correspondingly arranged. The flexible cable 6 is a spiral spring-shaped cable, such as a conductive spring structure. A piston 9 is fitted onto the right end of the moving conductive element 4. The inner wall of the piston 9 is fixedly connected to the moving conductive element 4, and the outer wall of the piston 9 is in a sealed sliding connection with the inner wall of the insulating cylinder 5. Therefore, the moving conductive element 4 can move laterally left and right within the insulating cylinder 5. Furthermore, the piston 9 divides the insulating cylinder 5 into two independent and sealed parts, which can be understood as the cylinder on the left side of the piston 9 and the cylinder on the right side of the piston 9. When the air pressure in the cylinder on the left side of the piston 9 and the cylinder on the right side of the piston 9 is not equal, the piston 9 can be pushed to move left or right, thereby realizing the separation and contact between the moving conductive component 4 and the stationary conductive component 3.

[0030] like Figure 2 As shown, a first air pipe connector 10 is connected to the bottom left side of the insulating cylinder 5. The first end of the first air pipe connector 10 is connected to the side of the insulating cylinder 5 where the inlet terminal 1 is located. A second air pipe connector 11 is connected to the bottom right side of the insulating cylinder 5. The first end of the second air pipe connector 11 is connected to the side of the insulating cylinder 5 where the outlet terminal 2 is located. The second air pipe connector 11 is connected to the insulating cylinder 5. The second end of the first air pipe connector 10 is connected to the pneumatic control system 37. The pneumatic control system 37 uses compressed arc-extinguishing gas as its working medium. A stationary contact 7 is provided at the right end (second end) of the stationary conductive component 3, and a moving contact 8 that cooperates with the stationary contact 7 is provided at the left end (first end) of the moving conductive component 4. The stationary contact 7 and the moving contact 8 are arranged opposite to each other and can contact and separate.

[0031] Figure 3 The diagram shown is a schematic representation of the structure of a high-voltage switch tripping according to an exemplary embodiment of this application. Figure 3As shown, during circuit breaking, the pneumatic control system 37 supplies air to the first air connector 10 via a three-position four-way solenoid valve and exhausts air from the second air connector 11, creating a high-low pressure difference on both sides of the piston 9. This pushes the piston 9 to the right, separating the moving contact 8 and the stationary contact 7, thus cutting off the circuit. During circuit breaking, an electric arc is generated between the moving contact 8 and the stationary contact 7. The arc-extinguishing gas accelerates the extinguishing of the arc. After absorbing heat, the arc-extinguishing gas expands in volume, thereby accelerating the movement of the piston 9 and causing the moving contact 8 to move to the right. This lengthens the arc while simultaneously cooling it, shortening the arc-extinguishing time. When the pneumatic control system 37 controls the air pressure on both sides of the piston 9 to be equal via the three-position four-way solenoid valve, the piston 9 can be stopped. Figure 2 As shown, during closing, the pneumatic control system 37 controls the first air pipe joint 10 to exhaust air and supply air to the second air pipe joint 11 via a three-position four-way solenoid directional valve, pushing the piston 9 to the left to close the moving contact 8 and the stationary contact 7, thus connecting the circuit. During closing, the arc heat generated between the moving contact 8 and the stationary contact 7 is absorbed by the arc-extinguishing gas and then discharged through the first air pipe joint 10, achieving arc cooling and shortening the arc extinguishing time. The higher air pressure formed on the right side of the piston 9 maintains the contact between the moving contact 8 and the stationary contact 7. The pneumatic control system 37 can communicate with the forwarding control interface, and realize the opening and closing of the high-voltage switch by receiving electrical signals sent by the forwarding control interface. That is, the pneumatic control system 37 acts as the power system for the high-voltage switch, controlling the opening and closing of the high-voltage switch according to the signals from the forwarding control interface, thereby realizing the remote power-off function.

[0032] Figure 4 The diagram shown is a schematic representation of the structure for closing a high-voltage switch according to another exemplary embodiment of this application. Figure 5 The diagram shown is a schematic representation of the high-voltage switch tripping structure provided in another exemplary embodiment of this application. Figure 4 and Figure 5 As shown, the high-voltage fee control device may further include: an arc-extinguishing grid assembly 12, which is disposed inside the insulating cylinder 5 and located on the side near the incoming terminal 1; an isolation cylinder 13, which is disposed between the piston 9 and the inner wall of the insulating cylinder 5, and is sealed to the piston 9, forming a cylindrical air gap 15 between the isolation cylinder 13 and the inner wall of the insulating cylinder 5, with the first end of the isolation cylinder 13 connected to the first air pipe connector 10 and the second end of the isolation cylinder 13 connected to the second air pipe connector 11; and a shielding cover 14, which is disposed between the arc-extinguishing grid assembly 12 and the inner wall of the insulating cylinder 5.

[0033] To improve arc extinguishing efficiency and protect the cylinder body, an arc-extinguishing grid assembly 12 and an isolation cylinder 13 are provided on the inner wall of the insulating cylinder body 5. The arc-extinguishing grid assembly 12 is located in the left side of the cylinder body of the piston 9, that is, on the side near the inlet terminal 1. The arc-extinguishing grid assembly 12 is an important component for protecting electrical equipment from the influence of electric arcs. It can absorb electric arcs, improve arc extinguishing efficiency, prevent electric arcs from burning the inner wall of the cylinder body, and quickly intervene and extinguish electric arcs when they are detected in electrical equipment, thereby preventing the damage caused by electric arcs. A shielding cover 14 is provided between the arc-extinguishing grid assembly 12 and the insulating cylinder body 5. The shielding cover 14 can condense arc products and maintain the insulation performance of the cylinder body. An isolation cylinder 13 is disposed between the piston 9 and the inner wall of the insulating cylinder 5, with the isolation cylinder located inside the right side of the piston 9, i.e., on the side of the output terminal 2. The isolation cylinder 13 is fixedly installed on the inner wall of the insulating cylinder 5, thus the isolation cylinder 13 and the piston 9 are in a sealed sliding connection, and the piston 9 can slide on the outer wall of the isolation cylinder 13. A cylindrical air gap 15 is formed between the isolation cylinder 13 and the inner wall of the insulating cylinder 5. The cylindrical air gap 15 can effectively improve the insulation performance and impact resistance between the isolation cylinder 13 and the insulating cylinder 5. The isolation cylinder 13 can enhance the insulation performance and structural strength of the cylinder, reducing the problem of cylinder cracking.

[0034] Both ends (the first end and the second end) of the isolation cylinder 13 are provided with vent holes 17. The first air pipe connector 10 and the second air pipe connector 11 are connected to the isolation cylinder 13 through the vent holes 17. The first air pipe connector 10 is connected to the left end of the isolation cylinder 13, and the second air pipe connector 11 is connected to the right end of the isolation cylinder 13. Arc-extinguishing gas can be introduced into the cylindrical air jacket 15 to improve its performance. A buffer slip ring 18 is slidably sealed inside the isolation cylinder 13 (i.e., the cylindrical air jacket 15). The buffer slip ring 18 plays a supporting and buffering role. When the buffer slip ring 18 slides left and right, it can reduce the impact force of the air pressure difference and play a damping buffering role.

[0035] In one embodiment, such as Figure 4 and Figure 5 As shown, the high-voltage fee control device may further include: a heat sink 16, which is disposed on the outer wall of the insulating cylinder 5, and the position of the heat sink 16 corresponds to the position of the shield 14.

[0036] The outer wall of the insulating cylinder 5 is provided with heat sinks 16, which correspond to the positions of the shielding cover 14. The heat sinks 16 can enhance the heat dissipation performance of the outer wall of the insulating cylinder 5 and extend the service life of the insulating cylinder 5.

[0037] In one embodiment, such as Figure 4 and Figure 5As shown, the arc-extinguishing grid assembly 12 is slidably connected to the shield 14, and a pull rod 19 is provided between the buffer slip ring 18 and the arc-extinguishing grid assembly 12. The arc-extinguishing grid assembly 12 includes at least two annular grids, and sliders 20 are fixedly connected to both ends of the annular grids; the high-voltage fee control device also includes: a slide rail 21, which is fixedly connected to the inner wall of the shield 14 away from the insulating cylinder 5; sliders 20 are slidably connected to the slide rail 21, and a support spring 22 is provided between adjacent sliders 20.

[0038] The arc-extinguishing grid assembly 12 consists of several annular grids that surround the electric arc from all directions, increasing the contact area and improving arc-extinguishing efficiency. Slider 20s are fixedly connected to the upper and lower ends of the annular grids, and slider 20s are slidably connected to a slide rail 21. The slide rail 21 is fixedly connected to the inner wall of the shielding cover 14 and also acts as a reinforcing rib. The annular grids, slider 20s, and slide rail 21 form a cage-like structure, which enhances the structural strength of the shielding cover 14 and reduces deformation caused by high temperatures. Support springs 22 are provided between adjacent sliders 20. A pull rod 19 is provided between the buffer slip ring 18 and the arc-extinguishing grid assembly 12. When the buffer slip ring 18 moves, it can drive the arc-extinguishing grid assembly 12 to move via the pull rod 19. Therefore, when the buffer slip ring 18 moves laterally, it will cause the arc-extinguishing grid assembly 12 to expand or contract, better distributing it between the moving contact 8 and the stationary contact 7, improving the arc-extinguishing performance of the arc-extinguishing grid assembly 12 and preventing localized high temperatures from burning out the shielding cover 14. Figure 5 As shown, when the rightmost slider 20 is pulled to the right by the pull rod 19, several sliders 20 can be evenly spread out and arranged under the action of the support spring 22, which enhances the spacing of the annular grid and improves the effect of breaking small electric arcs.

[0039] In one embodiment, such as Figure 4 and Figure 5 As shown, a temperature sensor (not shown), a pressure sensor (not shown), a miniature pressure relief valve 23, and an electric regulating module (not shown) are fixedly installed on the insulating cylinder 5. The electric regulating module is electrically connected to the miniature pressure relief valve 23, and the temperature sensor, pressure sensor, and electric regulating module are electrically connected to the cost control micro-terminal.

[0040] A temperature sensor, a pressure sensor, and a miniature pressure relief valve 23 are fixedly mounted on the insulating cylinder 5. The miniature pressure relief valve 23 is connected to an electric regulating module, and the temperature sensor, pressure sensor, and electric regulating module are electrically connected to a cost control micro-terminal. The temperature sensor and pressure sensor are used to monitor the temperature and pressure values ​​of the insulating cylinder 5 to achieve negative feedback control. The miniature pressure relief valve 23 can be set with a suitable pressure threshold, opening to release air when the pressure inside the insulating cylinder 5 is too high, thus providing safety protection.

[0041] The working principle of the high-voltage fee control device is as follows: the fee control micro-terminal, the first current transformer, the second current transformer, and the voltage transformer form an intelligent combined transformer, which collects the power at the input end of the circuit breaker and the output current at the output end, obtains the circuit voltage and current information flowing through the circuit breaker, calculates the line loss on the high-voltage transmission line and the cumulative electricity consumed by the user, and when the remaining usable electricity is too low, it uses the communication component to remind or control the user to recharge in advance. If necessary, it can control the circuit breaker to conduct or cut off through the forwarding control interface.

[0042] In the first embodiment, such as Figure 2 and Figure 3 As shown, the working principle of the high-voltage switch is as follows: The high-voltage switch is installed on the output terminal of the circuit breaker. It is used for circuit control when the circuit breaker 24 malfunctions or is manually closed. When the circuit is opened, the pneumatic control system 37 supplies air to the first air pipe joint 10 and exhausts air from the second air pipe joint 11, creating a high-low pressure difference on both sides of the piston 9. This pushes the piston 9 to the right, separating the moving contact 8 and the stationary contact 7, thus cutting off the circuit. During opening, an electric arc is generated between the moving contact 8 and the stationary contact 7. The arc-extinguishing gas accelerates the extinguishing of the arc. After absorbing heat, the arc-extinguishing gas expands, further accelerating the movement of the piston 9 and causing the moving contact 8 to move to the right, lengthening the arc while simultaneously cooling it and shortening the extinguishing time. When the pneumatic control system 37 controls the air pressure on both sides of the piston 9 to be equal, the piston 9 can be stopped. During opening, the pneumatic control system 37 controls the first air pipe joint 10 to exhaust air and supplies air to the second air pipe joint 11, pushing the piston 9 to the left to close the moving contact 8 and the stationary contact 7, thus connecting the circuit. When the circuit is closed, the heat generated by the electric arc between the moving contact 8 and the stationary contact 7 is absorbed by the arc-extinguishing gas and discharged through the first gas pipe joint 10, thus cooling the arc and shortening the arc extinguishing time. A higher gas pressure is formed on the right side of the piston 9 to maintain contact between the moving contact 8 and the stationary contact 7. Therefore, the high-voltage fee control device provided in this application can acquire voltage and current information on the high-voltage transmission line, accurately calculate the remaining electricity available to users on this line, and has a remote power-off function, solving the circuit fee control problem.

[0043] In the second embodiment, as Figure 4 and Figure 5As shown, the working principle of the high-voltage switch is as follows: The high-voltage switch incorporates an arc-extinguishing grid assembly 12, an isolation cylinder 13, and a shielding cover 14. The arc-extinguishing grid assembly 12 can absorb the electric arc, improving the arc extinguishing efficiency and preventing the arc from burning the inner wall of the cylinder. A buffer slip ring 18 is installed in the isolation cylinder 13. When the buffer slip ring 18 moves, it can drive the arc-extinguishing grid assembly 12 to move via the pull rod 19. When the buffer slip ring 18 moves laterally left and right, it will cause the arc-extinguishing grid assembly 12 to expand or contract, better distributing it between the moving contact 8 and the stationary contact 7, improving the arc-extinguishing performance of the arc-extinguishing grid assembly 12, and preventing local high temperatures from burning out the shielding cover 14. That is, the buffer slip ring 18 and the piston 9 can move synchronously, providing protection for the high-voltage switch during closing and opening, further improving the safety of the high-voltage switch.

[0044] The high-voltage switch is installed at the output terminal of the circuit breaker. It is used for circuit control in case of circuit breaker 24 failure or manual closing. During opening, the pneumatic control system 37 supplies air to the first air pipe joint 10 and exhausts air from the second air pipe joint 11, creating a high-low pressure difference on both sides of the piston 9. This pushes the piston 9 to the right, separating the moving contact 8 and the stationary contact 7, thus cutting off the circuit. While the piston 9 moves to the right, the first air pipe joint 10 also supplies air into the cylindrical air jacket 15, pushing the buffer slip ring 18 to the right. This, in turn, causes the arc-extinguishing grid assembly 12 to unfold to the right via the pull rod 19, improving the arc-extinguishing performance of the grid assembly 12. During opening, an electric arc is generated between the moving contact 8 and the stationary contact 7. The arc-extinguishing gas accelerates the extinguishing of the arc. The arc-extinguishing gas expands after absorbing heat, further accelerating the movement of the piston 9 and the moving contact 8 to the right. This lengthens the arc while simultaneously cooling it, shortening the arc-extinguishing time.

[0045] When the pneumatic control system 37 controls the air pressure on both sides of piston 9 to be equal, piston 9 can be stopped. At this time, buffer slip ring 18 will also stop and no longer drive the arc-extinguishing grid assembly 12. During opening, the pneumatic control system 37 controls the first air pipe joint 10 to exhaust air and the second air pipe joint 11 to push piston 9 to the left, so that moving contact 8 and stationary contact 7 can close, and the circuit can be connected. Moreover, the air supply to the second air pipe joint 11 will push buffer slip ring 18 to the left, which will drive the arc-extinguishing grid assembly 12 to the left through pull rod 19. During closing, the arc heat generated between moving contact 8 and stationary contact 7 is absorbed by the arc-extinguishing gas and discharged from the first air pipe joint 10, thereby cooling the arc and shortening the arc extinguishing time. The gas squeezed by buffer slip ring 18 in the cylindrical air jacket 15 on the left side will also be discharged from the first air pipe joint 10. The higher air pressure formed on the right side of piston 9 can maintain the contact between moving contact 8 and stationary contact 7. Therefore, the high-voltage fee control device provided in this application can obtain voltage and current information on high-voltage transmission lines, accurately calculate the remaining electricity available to users on this line, and has a remote power-off function, thus solving the circuit fee control problem.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, 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 high-voltage fee control device, comprising a circuit breaker and a fee control micro-terminal, characterized in that, The high-voltage fee control device is communicatively connected to the cloud control system, and the high-voltage fee control device also includes: The system includes: a disconnecting switch connected to the incoming terminal of the circuit breaker; a first current transformer, one end of which is electrically connected to the prepaid micro-terminal, and the other end of which is connected between the disconnecting switch and the incoming terminal of the circuit breaker; a second current transformer connected between the outgoing terminal of the circuit breaker and the prepaid micro-terminal; a voltage transformer, one end of which is electrically connected to the prepaid micro-terminal, and the other end of which is connected between the disconnecting switch and the incoming terminal of the circuit breaker; and a communication component electrically connected to the prepaid micro-terminal for communicating with the cloud control system. Connection; forwarding control interface, the forwarding control interface being connected between the prepaid micro-terminal and the circuit breaker; high-voltage switch, the high-voltage switch being electrically connected to the forwarding control interface and connected to the output terminal of the circuit breaker; the high-voltage switch includes: an insulating cylinder, an inlet terminal and an outlet terminal, the insulating cylinder being provided with a static conductive element and a moving conductive element, the first end of the static conductive element being connected to the end of the inlet terminal located inside the insulating cylinder, the insulating cylinder being provided with a moving conductive element, the first end of the moving conductive element being disposed opposite to the second end of the static conductive element, a piston being sleeved on the moving conductive element, the outer wall of the piston being slidably sealed to the inner wall of the insulating cylinder; A first air pipe connector, the first end of the first air pipe connector is connected to the side of the insulating cylinder body where the inlet terminal is located; a second air pipe connector, the first end of the second air pipe connector is connected to the side of the insulating cylinder body where the outlet terminal is located. An isolation cylinder is disposed between the piston and the inner wall of the insulating cylinder. The isolation cylinder is sealed to the piston, and a cylindrical air gap is formed between the isolation cylinder and the inner wall of the insulating cylinder. The first end of the isolation cylinder is connected to the first air pipe connector, and the second end of the isolation cylinder is connected to the second air pipe connector. Both the first and second ends of the isolation cylinder are provided with vent holes, and the first and second air pipe connectors are connected to the isolation cylinder through the vent holes; a buffer slip ring is slidably sealed inside the isolation cylinder. An arc-extinguishing grid assembly is disposed within the insulating cylinder body, and the arc-extinguishing grid assembly is located on the side close to the incoming terminal. A shielding cover is disposed between the arc-extinguishing grid assembly and the inner wall of the insulating cylinder. The arc-extinguishing grid assembly is slidably connected to the shielding cover, and a pull rod is provided between the buffer slip ring and the arc-extinguishing grid assembly.

2. The high-voltage fee control device according to claim 1, characterized in that, The high-voltage switch includes: The incoming terminal is connected through to the first end of the insulating cylinder, and the outgoing terminal is connected through to the second end of the insulating cylinder. The insulating cylinder is equipped with a flexible cable. The first end of the flexible cable is connected to the second end of the moving conductive component, and the second end of the flexible cable is connected to the end of the outgoing terminal located inside the insulating cylinder.

3. The high-voltage fee control device according to claim 1, characterized in that, The high-voltage fee control device also includes: A pneumatic control system, wherein the second end of the first air pipe connector is connected to the pneumatic control system, and the second end of the second air pipe connector is connected to the pneumatic control system.

4. The high-voltage fee control device according to claim 2, characterized in that, The high-voltage fee control device also includes: A stationary contact, wherein the stationary contact is mounted on the second end of the stationary conductive component; A moving contact, wherein the moving contact is mounted on the first end of the moving conductive element; The stationary contact and the moving contact are arranged opposite to each other.

5. The high-voltage fee control device according to claim 1, characterized in that, The high-voltage fee control device also includes: A heat sink is disposed on the outer wall of the insulating cylinder, and the position of the heat sink corresponds to the position of the shielding cover.

6. The high-voltage fee control device according to claim 1, characterized in that, The arc-extinguishing grid assembly includes at least two annular grids, and sliders are fixedly connected to both ends of the annular grids; The high-voltage fee control device further includes: a slide rail, which is fixedly connected to the inner wall of the shielding cover away from the insulating cylinder body; The slider is slidably connected to the slide rail, and a support spring is provided between adjacent sliders.

7. The high-voltage fee control device according to claim 1, characterized in that, A temperature sensor, a pressure sensor, a miniature pressure relief valve, and an electric adjustment module are fixedly installed on the insulating cylinder. The electric adjustment module is electrically connected to the miniature pressure relief valve, and the temperature sensor, pressure sensor, and electric adjustment module are electrically connected to the cost control micro-terminal.

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