Electrically operated drop-out fuse and control method

Abstract

The invention discloses an electrically-operated drop-out fuse and a control method, and relates to the field of circuit devices for power supply or distribution, the electrically-operated drop-out fuse comprises a protective insulator, an intelligent control module, a drop-out assembly, a driving mechanism and a transmission mechanism, the protective insulator is of a longitudinally-penetrating groove structure, the top of the protective insulator is provided with a closed upper cover, and the intelligent control module is connected with the drop-out assembly; two sides of the protective insulator extend downwards to form side walls, the side walls and the insulator form a shield used for shielding the upper static contact and the upper moving contact, a closed cavity is arranged at the rear part of the protective insulator, and a driving mechanism is arranged in the cavity; the intelligent control module is electrically connected with the driving mechanism, the driving mechanism is connected with the transmission mechanism, and the intelligent control module controls the driving mechanism to drive the falling assembly through the transmission mechanism to realize opening or closing; according to the fuse and the control method provided by the invention, remote intelligent switch-on and switch-off can be realized, the operation is safe and reliable, the structure is compact, and the protection performance is excellent.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of power supply or power distribution circuit device, in particular to the technical field of drop-out fuse, and especially to an electrically operated drop-out fuse and a control method. BACKGROUND

[0002] The drop-out fuse is the most commonly used short-circuit protection switch for 10kV distribution line branch and distribution transformer. It has a clear breaking point, has the function of disconnector, and bears the important role of isolating fault section and ensuring normal power supply in non-fault area.

[0003] When the branch line and the distribution transformer fail, the fuse in the drop-out assembly of the drop-out fuse is blown off, and the maintenance worker needs to replace it in time. Since it is high-altitude operation, it is not convenient to replace the drop-out fuse. When the maintenance worker performs closing operation, the short-circuit arc splashes, or the transformer explodes and burns, which seriously threatens the safety of the maintenance personnel.

[0004] Therefore, how to provide a drop-out fuse to solve the above technical problems has become a technical problem to be solved in the prior art. SUMMARY

[0005] One of the technical problems to be solved by the embodiments of the present application is to provide an electrically operated drop-out fuse and a control method to solve the problems of dangerous operation, inconvenient maintenance and low automation of the traditional drop-out fuse.

[0006] In order to cope with the above scenarios, in a first aspect, the embodiments of the present application provide an electrically operated drop-out fuse, comprising: a protective insulator 1, an intelligent control module 5, a drop-out assembly 6, a driving mechanism 7 and a transmission mechanism 8, wherein: The protective insulator 1 is a longitudinal groove structure, the top of which is provided with a closed upper cover 2, the front end of the upper cover 2 extends forward, and the two sides extend downward to form side walls 3, and the side walls 3 and the insulator of the groove structure together form a shield for shielding the upper static contact 18 and the upper moving contact 15; The protective insulator 1 is provided with a closed chamber 9 at the lower position of the middle part of the rear part, and the driving mechanism 7 is installed in the chamber 9; The driving mechanism 7 is connected with the transmission mechanism 8, the intelligent control module 5 is electrically connected with the driving mechanism 7, and the intelligent control module 5 controls the driving mechanism 7 to drive the drop-out assembly 6 to realize the opening and closing action through the transmission mechanism 8.

[0007] In combination with the first aspect, in some embodiments, comprising: A plurality of umbrella skirts 4 are provided on the outer periphery of the protective insulator 1 for increasing the creepage distance and improving the insulation performance.

[0008] In some embodiments of the first aspect, the device comprises: The transmission mechanism 8 comprises a roller 10, a rotating rod 11, a support arm 12, a connecting rod 13 and a shaft pin 14, wherein the roller 10, the rotating rod 11 and the support arm 12 are made of insulating material.

[0009] In some embodiments of the first aspect, the device comprises: The transmission mechanism 8 is hingedly connected with the falling assembly 6, for converting the linear motion of the driving mechanism 7 into the rotary motion of the falling assembly 6.

[0010] In some embodiments of the first aspect, the device comprises: The falling assembly 6 comprises an upper movable contact 15, an arc extinguishing tube 16 and a lower movable contact assembly 17, wherein the upper movable contact 15 is in contact with an upper stationary contact 18 to realize power-on, and the arc extinguishing tube 16 is used to absorb arc energy and extinguish arc when the circuit is opened or short-circuited.

[0011] In some embodiments of the first aspect, the device comprises: The intelligent control module 5 is provided with a state detection feedback circuit for detecting the closing or opening state of the falling assembly 6.

[0012] In some embodiments of the first aspect, the driving mechanism 7 comprises but is not limited to an electric push rod and a gear mechanism.

[0013] The driving mechanism 7 retracts to drive the transmission mechanism 8 to rotate, so as to make the falling assembly 6 turn up and close.

[0014] In some embodiments of the first aspect, the device comprises: The driving mechanism 7 extends to push the arc extinguishing tube 16, so as to separate the upper movable contact 15 from the upper stationary contact 18, and the falling assembly 6 is lowered under the action of gravity to realize disconnection.

[0015] In some embodiments of the first aspect, the device comprises: When the falling assembly 6 automatically falls due to line short circuit or overload fuse blowout, The intelligent control module 5 detects the falling signal and controls the driving mechanism 7 to extend, so as to reset the transmission mechanism 8 to the open state.

[0016] In some embodiments of the first aspect, the device comprises: The intelligent control module 5 comprises a micro control unit, a power management unit, a wireless communication module and a power supply, which can receive control signals through a mobile terminal or a remote controller to realize remote closing and opening operation.

[0017] In some embodiments of the first aspect, the device comprises: The intelligent control module 5 is equipped with a multi-dimensional detection unit including a current sensor, an arc detection circuit and an attitude sensor. It is used to comprehensively judge the fuse status based on the line current, drop angle and arc light characteristic signal, and issue an early warning signal or perform a preventive tripping action when abnormal arc light, temperature rise or vibration occurs. In conjunction with the first aspect, some implementations include: The exposed metal parts of the protective insulator 1, the transmission mechanism 8 and the drop assembly 6 are provided with protective covers; In conjunction with the first aspect, some implementations include: Electrically operated drop-out fuses also have a mechanical manual operation interface, which allows for opening and closing the circuit breaker via a manual operating lever in the event of a power failure or control module malfunction.

[0018] Secondly, embodiments of this application provide a control method for an electrically operated drop-out fuse, applied to the electrically operated drop-out fuse as described above, comprising: The intelligent control module receives opening or closing control signals from remote or local sources; The intelligent control module controls the drive mechanism to generate telescopic motion based on the received control signals, and converts the linear motion of the push rod into the rotational motion of the drop assembly through the transmission mechanism. When the drive mechanism retracts, the transmission mechanism drives the drop assembly to flip upward, causing the upper moving contact to close with the upper stationary contact, thus achieving closing; when the drive mechanism extends, the transmission mechanism pushes the drop assembly downward, causing the upper moving contact to separate from the upper stationary contact, thus achieving opening.

[0019] In conjunction with the second aspect, some implementations also include: When an overload or short circuit occurs in the circuit or load, causing the fuse to blow, the drop-out component will automatically fall due to gravity. After the intelligent control module detects the drop signal, it controls the drive mechanism to reverse and reset the transmission mechanism, and the system enters the safe state of tripping.

[0020] In conjunction with the second aspect, in some implementations, the intelligent control module monitors the operating status of the drive mechanism, transmission mechanism and drop assembly in real time, and outputs the corresponding status information to the remote monitoring terminal or power distribution automation system.

[0021] The electrically operated drop-out fuse and its control method provided in this invention, through the coordinated design of protective insulators, intelligent control modules, drive mechanisms, and transmission mechanisms, achieves electric and intelligent operation of the drop-out fuse. It enables remote or local control of opening and closing actions, effectively avoiding safety hazards such as electric shock at heights and arc flash caused by manual pole climbing, significantly improving operational safety. The protective insulator adopts a longitudinally penetrating groove structure, with a closed top cover, extended sides forming a protective cover, and umbrella skirts on the outer periphery, providing excellent overall protection performance. It effectively prevents rain, dust, and accidental contact, improving insulation strength and weather resistance. The transmission mechanism is made of insulating material, with a stable structure, smoothly converting the linear motion of the drive mechanism into the rotational motion of the drop-out component. It is sensitive, reliable, and has a long mechanical life. The arc-extinguishing tube in the drop-out component effectively absorbs arc energy and quickly extinguishes the arc during opening or short circuit, ensuring circuit breaking safety. The intelligent control module enables remote wireless control and features status detection and feedback functions. It can monitor the operating status of the drive mechanism, transmission mechanism, and drop-out assembly in real time, promptly uploading the operating status to the monitoring terminal or power distribution automation system for remote operation and maintenance management. When an overload occurs or a short-circuit fuse blows, the drop-out assembly automatically drops. The intelligent control module detects the drop-out signal and automatically controls the drive mechanism to reset, allowing the system to quickly enter a safe tripping state, thus preventing the accident from escalating. By integrating current sensors, arc detection, and attitude sensing units, the device can provide early warnings or automatically perform preventative tripping operations when abnormal arcs, temperature rises, or vibrations occur, further enhancing the system's safety and intelligent response capabilities. Furthermore, this invention retains a mechanical manual operation interface for emergency use in case of power failure or control malfunction, ensuring reliable system operation under any conditions. The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0022] The accompanying drawings, which form part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

[0023] The invention will be more clearly understood with reference to the accompanying drawings and the following detailed description, wherein: Figure 1 This diagram shows a structural diagram of an electrically operated drop-out fuse in the closed state according to an embodiment of the present invention. Figure 2 This diagram shows a structural diagram of an electrically operated drop-out fuse in the open state according to an embodiment of the present invention. Figure 3 This diagram shows a structural diagram of an electrically operated drop-out fuse in the open state according to another embodiment of the present invention; Figure 4This diagram shows an assembly structure of an electrically operated drop-out fuse according to an embodiment of the present invention. Detailed Implementation

[0024] The present application will be further described below with reference to specific embodiments and accompanying drawings. It is understood that the illustrative embodiments of this disclosure include, but are not limited to, related methods, devices, and systems. The specific embodiments described herein are merely for explaining the present application and not for limiting it. Furthermore, for ease of description, the accompanying drawings show only the parts relevant to the present application, and not all of the structures or processes.

[0025] The following specific embodiments illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. Although the description of this application will be presented in conjunction with preferred embodiments, this does not mean that the features of this invention are limited to this embodiment. On the contrary, the purpose of describing the invention in conjunction with embodiments is to cover other options or modifications that may be derived based on the claims of this application. To provide a thorough understanding of this application, many specific details will be included in the following description. This application may also be implemented without using these details. Furthermore, to avoid confusion or obscuring the focus of this application, some specific details will be omitted in the description. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0026] Figure 1 This diagram shows a structural diagram of an electrically operated drop-out fuse in the closed state according to an embodiment of the present invention. Figure 2 This diagram shows a structural diagram of an electrically operated drop-out fuse in the open state according to an embodiment of the present invention. Figure 3 This diagram shows a structural diagram of an electrically operated drop-out fuse in the open state according to another embodiment of the present invention; Figure 4 This diagram illustrates an assembly structure of an electrically operated drop-out fuse according to an embodiment of the present invention; as shown. Figures 1-4 As shown, the electrically operated drop-out fuse includes: a protective insulator 1, an intelligent control module 5, a drop-out assembly 6, a drive mechanism 7, and a transmission mechanism 8. The protective insulator 1 has a longitudinally penetrating groove structure with a closed top cover 2. The front end of the top cover 2 extends forward, and both sides extend downward to form sidewalls 3. The sidewalls 3 and the insulator of the groove structure together form a protective cover for shielding the upper stationary contact 18 and the upper moving contact 15. A closed chamber 9 is located at the lower rear center of the protective insulator 1, and the drive mechanism 7 is installed inside the chamber 9. The intelligent control module 5 is electrically connected to the drive mechanism 7, and the drive mechanism 7 is connected to the transmission mechanism 8. The intelligent control module 5 controls the drive mechanism 7 to drive the drop-out assembly 6 through the transmission mechanism 8 to achieve opening or closing actions.

[0027] In one embodiment, the driving mechanism can be an electric push rod or a gear drive mechanism. One end of the electric push rod is connected to the inner wall of the protective insulator 1, and the other end is connected to the transmission mechanism 8. The electric push rod can extend or retract to drive the drop assembly 6 to open or close the circuit breaker. The intelligent control module 5 is electrically connected to the driving mechanism 7 and is used to control the extension or retraction of the driving mechanism 7 according to the received control signal.

[0028] In one specific embodiment, the electrically operated drop-out fuse consists of a protective insulator, an intelligent control module, a drop-out assembly, an electric push rod, and a transmission mechanism; it can realize remote control of the opening and closing of the electrically operated drop-out fuse. Its working principle is as follows: 1. Remote closing: When the fuse is in the open state, the electric push rod is fully extended, the transmission mechanism is in the open state, and the drop-out assembly is in the dropped state; when the fuse is closed using a mobile phone or remote control, the intelligent control module receives the remote control signal and controls the electric push rod to retract, driving the drop-out assembly to rotate and close the fuse. When the drop-out assembly is closed, the intelligent control module immediately controls the electric push rod to extend, driving the transmission mechanism to rotate in the opposite direction. When it rotates to a certain angle, the intelligent control module controls the electric push rod to stop, the transmission mechanism is in the open waiting state, and the fuse is closed and working normally. 2. Remote Control Tripping: When the fuse is closed, and the fuse is tripped using a mobile phone or remote control, the intelligent control module receives the remote control signal and controls the electric push rod to extend. The head of the electric push rod touches the arc suppression tube of the drop-out assembly and continues to extend, causing the moving contact on the drop-out assembly to separate from the stationary contact on the insulator. Then, under the action of gravity, the drop-out assembly rotates and falls. When the transmission mechanism is fully in the tripped state, the electric push rod stops moving, and the fuse tripping is complete. 3. When the drop-out fuse is closed, if an overload or short circuit occurs on the line or load and the fuse blows, the drop-out assembly flips and falls, contacting the transmission mechanism. The intelligent control module controls the electric push rod to extend, driving the transmission mechanism to rotate. When the transmission mechanism is fully in the tripped state, the electric push rod stops moving, and the fuse is in the tripped state. At this time, maintenance personnel can remove and replace the fuse from the drop-out assembly.

[0029] The insulator employs a groove structure running from top to bottom, with a closed top cover. The front end of the top cover extends forward, and the side walls extending downward on both sides form a protective shield with the groove structure insulator, protecting components such as the upper stationary contact and upper moving contact. A closed chamber extends longitudinally from the lower center of the rear of the insulator, housing the electric push rod. Several sheds are provided on the insulator. This structural design effectively reduces space occupation and provides good protection. The transmission mechanism mainly consists of rollers, rotating rods, support arms, connecting rods, and pins; the rollers, rotating rods, and support arms are made of insulating material. The drop-out assembly mainly consists of the upper moving contact, arc-extinguishing tube, and lower moving contact assembly.

[0030] The electrically operated drop-out fuse provided in this invention has a reasonable structural design and complete functions. By setting up an intelligent control module and drive mechanism, it achieves remote electric control, enabling opening and closing operations without climbing the pole, greatly improving operational safety. The protective insulator adopts a longitudinally penetrating groove structure, with a closed top cover, extended side walls on both sides, and umbrella skirts on the outer surface, effectively preventing rainwater and foreign object intrusion, and significantly improving insulation performance and protection capabilities. The drive mechanism is located in the rear cavity of the insulator, with a compact structure and small footprint, suitable for outdoor power distribution line installation. The transmission mechanism is made of insulating material, smoothly converting the linear motion of the drive mechanism into the rotational motion of the drop-out component, ensuring reliable operation and long service life. When a short circuit or overload causes the fuse to blow, the intelligent control module can automatically identify the drop-out state and control the drive mechanism to reset, causing the fuse to automatically trip, improving the system's safety and intelligence level. Simultaneously, the system has status detection, remote monitoring, and emergency manual operation functions, ensuring safe operation under various working conditions.

[0031] In one embodiment, the protective insulator 1 is provided with multiple sheds 4 on its outer periphery to increase the creepage distance and improve insulation performance.

[0032] In one embodiment, the transmission mechanism 8 includes a roller 10, a rotating rod 11, a support arm 12, a connecting rod 13, and a pin 14, all of which are made of insulating material.

[0033] In one embodiment, the transmission mechanism 8 is hinged to the drop assembly 6 and is used to convert the linear motion of the drive mechanism 7 into the rotational motion of the drop assembly 6.

[0034] In one embodiment, a mechanical self-locking device (not shown in the figure), such as a limit latch or ratchet stop structure, can be provided in the transmission mechanism 8 to automatically lock when the drop-out component 6 is in the closed position, preventing accidental tripping due to vibration, wind, or line shaking. When the intelligent control module sends a tripping signal or detects a fuse blowing signal, the drive mechanism 7 drives the transmission mechanism to release the self-locking, realizing controlled drop-out. This effectively prevents malfunctions and unplanned tripping problems that occur in traditional drop-out fuses.

[0035] In one embodiment, the drop-out assembly 6 includes an upper moving contact 15, an arc-extinguishing tube 16, and a lower moving contact assembly 17. The upper moving contact 15 contacts the upper stationary contact 18 to achieve energization, and the arc-extinguishing tube 16 is used to absorb arc energy and extinguish the arc when the circuit is opened or short-circuited.

[0036] In one embodiment, the intelligent control module 5 is provided with a status detection feedback circuit for detecting the closed or open status of the drop component 6.

[0037] In one embodiment, the intelligent control module 5 is used to automatically control the drive mechanism 7 to reset after the fuse blows.

[0038] In one embodiment, the drive mechanism 7 retracts to drive the transmission mechanism 8 to rotate, thereby causing the drop assembly 6 to flip up and close; the drive mechanism 7 extends to push the arc-extinguishing tube 16, causing the upper moving contact 15 to separate from the upper stationary contact 18, and the drop assembly 6 to droop under the action of gravity, thus achieving disconnection.

[0039] In one embodiment, when the drop-out component 6 automatically falls due to a short circuit or overload fuse blown, the intelligent control module 5 detects the drop-out signal and controls the drive mechanism 7 to extend, so that the transmission mechanism 8 is reset to the open state.

[0040] In one embodiment, the intelligent control module 5 includes a microcontroller unit, a power management unit, a wireless communication module, and a power supply. It can receive control signals via a mobile terminal or remote control to achieve remote opening and closing operations. The intelligent control module 5 can be equipped with a multi-dimensional detection unit, including a current sensor, an arc detection circuit, and a posture sensor. The module can comprehensively determine the fuse status based on line current, drop angle, and arc characteristic signals, and perform preventative opening actions in advance when abnormal arcing, temperature rise, or vibration occurs. Furthermore, the intelligent control module can automatically adjust the drive speed of the drive mechanism 7 according to ambient temperature and humidity to optimize the opening and closing curves and ensure reliable operation under low temperature or high humidity conditions.

[0041] In one embodiment, the exposed metal parts of the protective insulator 1, the transmission mechanism 8, and the drop assembly 6 are all provided with protective covers.

[0042] In one embodiment, the electrically operated drop-out fuse also has a mechanical manual operation interface for manually operating the switch to perform opening and closing functions via a lever in the event of a power failure or control module failure.

[0043] In one embodiment, the intelligent control module 5 can adopt a modular structure, comprising a communication unit, a control unit, and a drive unit. It communicates bidirectionally with the Supervisory Control and Data Acquisition (SCADA) system via wireless network, LoRa, or NB-IoT, enabling remote monitoring of the tripping status, number of trips, temperature data, and operating current of the tripping fuses. This allows for coordinated control and group management of multiple fuses. When a branch trip is detected, the algorithm can determine the faulty section and automatically isolate it, achieving intelligent zone protection.

[0044] In one embodiment, to ensure reliable operation at critical moments, an auxiliary drive mechanism, such as a small servo motor or electromagnetic release unit, can be provided next to the drive mechanism 7. When the main push rod or control module fails, the system automatically switches to the backup drive channel to ensure that the drop component 6 can still trip, thus achieving dual redundancy protection and highly reliable safe disconnection.

[0045] This invention also provides a control method for an electrically operated drop-out fuse, the method being applied to an electrically operated drop-out fuse including a protective insulator, an intelligent control module, a drive mechanism, a transmission mechanism, and a drop-out assembly, the method comprising: Step 101: The intelligent control module receives the opening or closing control signal sent remotely or locally; Step 102: The intelligent control module controls the drive mechanism to generate telescopic motion according to the received control signal, and converts the linear motion of the push rod into the rotational motion of the drop component through the transmission mechanism. Step 103: When the drive mechanism retracts, the transmission mechanism drives the drop assembly to flip upward, causing the upper moving contact to close with the upper stationary contact, thus achieving closing; when the drive mechanism extends, the transmission mechanism pushes the drop assembly downward, causing the upper moving contact to separate from the upper stationary contact, thus achieving opening.

[0046] In one embodiment, the method further includes: Step 104: When an overload or short circuit occurs in the line or load, causing the fuse to blow, the drop-out assembly will automatically fall due to gravity. Step 105: After the intelligent control module detects the drop status signal, it controls the drive mechanism to reverse its action to reset the transmission mechanism, and the system enters the safe state of tripping. Step 106: The intelligent control module monitors the operating status of the drive mechanism, transmission mechanism and drop assembly in real time, and outputs the corresponding status information to the remote monitoring terminal or power distribution automation system.

[0047] The electrically operated drop-out fuse control method of this invention enables intelligent and automated control of the fuse's opening and closing states, significantly improving the safety and reliability of power system operation. By receiving remote or local control signals through an intelligent control module, the system controls the extension and retraction of the drive mechanism, which in turn drives the drop-out component to rotate via a transmission mechanism, achieving the electric opening and closing operation of the drop-out fuse and avoiding the dangers of traditional manual pole climbing operations. When a short circuit or overload occurs and the fuse blows, the system can automatically identify the drop-out state and control the drive mechanism to reset, allowing the device to quickly enter a safe opening state and effectively preventing the accident from escalating. Simultaneously, the intelligent control module can monitor the operating status of the transmission mechanism and the drop-out component in real time and upload the information to a monitoring terminal, enabling remote monitoring and operation and maintenance management. This method is rapid in response, precise in control, and highly intelligent, not only reducing maintenance intensity and manual risks but also improving the operating efficiency and intelligent operation and maintenance level of the power distribution system.

[0048] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For system embodiments, since they largely correspond to method embodiments, the description is relatively simple; relevant parts can be referred to the descriptions in the method embodiments.

[0049] The methods and systems of the present invention may be implemented in many ways. For example, they may be implemented by software, hardware, firmware, or any combination of software, hardware, and firmware. The above-described order of steps for the methods is for illustrative purposes only, and the steps of the methods of the present invention are not limited to the order specifically described above unless otherwise specifically stated. Furthermore, in some embodiments, the present invention may also be implemented as a program recorded on a recording medium, the program comprising machine-readable instructions for implementing the methods according to the present invention. Thus, the present invention also covers recording media storing programs for performing the methods according to the present invention.

[0050] The description of this invention is given for illustrative and descriptive purposes only and is not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical application of the invention and to enable those skilled in the art to understand the invention and to design various embodiments with various modifications suitable for a particular purpose.

Claims

1. An electrically operated drop-out fuse, characterized in that, include: Protective insulator (1), intelligent control module (5), drop assembly (6), drive mechanism (7) and transmission mechanism (8). in: The protective insulator (1) is a longitudinally penetrating groove structure with a closed top cover (2) on its top. The front end of the top cover (2) extends forward and the two sides extend downward to form sidewalls (3). The sidewalls (3) and the insulator of the groove structure together form a protective cover for shielding the upper stationary contact (18) and the upper moving contact (15). The protective insulator (1) has a closed chamber (9) located at the lower middle of its rear part, and a drive mechanism (7) is installed in the chamber (9). The intelligent control module (5) is electrically connected to the drive mechanism (7), and the drive mechanism (7) is connected to the transmission mechanism (8). The intelligent control module (5) controls the drive mechanism (7) to drive the drop assembly (6) through the transmission mechanism (8) to achieve opening or closing of the circuit breaker.

2. The electrically operated drop-out fuse according to claim 1, characterized in that, include: The protective insulator (1) has multiple skirts (4) on its outer periphery to increase the creepage distance and improve insulation performance.

3. The electrically operated drop-out fuse according to claim 1, characterized in that, include: The transmission mechanism (8) includes a roller (10), a rotating rod (11), a support arm (12), a connecting rod (13), and a pin (14), wherein the roller (10), the rotating rod (11), and the support arm (12) are made of insulating material; and / or The transmission mechanism (8) is hinged to the drop assembly (6) and is used to convert the linear motion of the drive mechanism (7) into the rotational motion of the drop assembly (6).

4. The electrically operated drop-out fuse according to claim 1, characterized in that, include: The drop-out assembly (6) includes an upper moving contact (15), an arc-extinguishing tube (16), and a lower moving contact assembly (17). The upper moving contact (15) contacts the upper stationary contact (18) to achieve energization. The arc-extinguishing tube (16) is used to absorb arc energy and extinguish the arc when the circuit is opened or short-circuited.

5. The electrically operated drop-out fuse according to claim 1, characterized in that, include: The intelligent control module (5) is equipped with a status detection feedback circuit for detecting the closed or open status of the drop component (6).

6. The electrically operated drop-out fuse according to claim 1, characterized in that, include: The drive mechanism (7) includes, but is not limited to, electric actuators and gear mechanisms: and / or The retraction of the electric push rod drives the transmission mechanism (8) to rotate, thereby causing the drop assembly (6) to flip up and close the brake; and / or The electric push rod extends to push the arc-extinguishing tube (16), causing the upper moving contact (15) to separate from the upper stationary contact (18), and the drop assembly (6) hangs down under the action of gravity, thus achieving disconnection.

7. The electrically operated drop-out fuse according to claim 1, characterized in that, When the drop assembly (6) falls automatically due to a short circuit or overload fuse blown, The intelligent control module (5) detects the drop signal and controls the drive mechanism (7) to drive the transmission mechanism (8) to reset to the open state.

8. The electrically operated drop-out fuse according to claim 1, characterized in that, include: The intelligent control module (5) includes a microcontroller unit, a power management unit, a wireless communication module and a power supply, and can receive control signals through a mobile terminal or remote control to realize remote opening and closing operations. and / or The intelligent control module (5) is equipped with a multi-dimensional detection unit including a current sensor, an arc detection circuit and an attitude sensor. It is used to comprehensively judge the fuse status based on the line current, drop angle and arc light characteristic signal, and issue an early warning signal or perform a preventive tripping action when abnormal arc light, temperature rise or vibration occurs. and / or The exposed metal parts of the protective insulator (1), transmission mechanism (8) and drop assembly (6) are provided with protective covers; and / or Electrically operated drop-out fuses also have a mechanical manual operation interface, which allows for opening and closing the circuit breaker via a manual operating lever in the event of a power failure or control module malfunction.

9. A control method for an electrically operated drop-out fuse, characterized in that, Applied to the electrically operated drop-out fuse as described in any one of claims 1-8, comprising: The intelligent control module receives opening or closing control signals from remote or local sources; The intelligent control module controls the drive mechanism to generate telescopic motion based on the received control signals, and converts the linear motion of the push rod into the rotational motion of the drop assembly through the transmission mechanism. When the drive mechanism retracts, the transmission mechanism drives the drop assembly to flip up, causing the upper moving contact to close with the upper stationary contact, thus achieving the closing of the circuit breaker; When the drive mechanism extends, the transmission mechanism pushes the drop assembly downward, causing the upper moving contact to separate from the upper stationary contact, thus achieving circuit breaking.

10. The control method for an electrically operated drop-out fuse according to claim 9, characterized in that, Also includes: When an overload or short circuit occurs in the circuit or load, causing the fuse to blow, the drop-out component will automatically fall due to gravity. After the intelligent control module detects the drop status signal, it controls the drive mechanism to reverse its action to reset the transmission mechanism, and the system enters the safe state of tripping. and / or The intelligent control module monitors the operating status of the drive mechanism, transmission mechanism and drop assembly in real time, and outputs the corresponding status information to the remote monitoring terminal or power distribution automation system.

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