Resettable voltage protection switch

Abstract

The utility model discloses a resettable voltage protection switch, which relates to the field of power distribution and power utilization technical equipment of an electric power system and comprises a sensor, a voltage detection module, a voltage detection module and a voltage detection module, and is characterized in that the sensor is used for collecting current data and voltage data on a power grid line; the controller is embedded in the self-recovery voltage protection switch, is connected with the sensor, and is used for sending a switching-off signal to the switching-off assembly or sending a switching-on signal to the switching-on assembly based on the current data and the voltage data; a switching-off assembly which is installed in the self-recovery voltage protection switch in an embedded manner, is connected with the controller, and is used for carrying out switching-off processing after receiving a switching-off signal sent by the controller; and the closing assembly is embedded in the self-recovery voltage protection switch, is connected with the controller, and is used for performing closing processing after receiving the closing signal sent by the controller. According to the utility model, the technical problem of low power supply reliability caused by the fact that the low-voltage switch in the prior art cannot automatically restore power after the fault of the power grid line disappears is solved.

Description

Technical Field

[0001] The utility model relates to the technical equipment field of power system distribution and power consumption, and particularly relates to a self - resetting voltage protection switch. Background Art

[0002] Since the current low - voltage switch does not have the function of detecting line open - phase, there will be a situation of continuous power supply when the line is open - phase. When an open - phase event occurs in the line, it will cause the load at the rear section of the low - voltage switch, especially three - phase motor equipment such as fish pond aerators, to operate with open - phase, thus causing the motor to burn out and further leading to customer complaint incidents.

[0003] In related technologies, although a phase - loss protector can be installed to automatically cut off the power supply when detecting open - phase to protect the safety of motor equipment, the current phase - loss protector does not have an automatic power - restoration function. And because the current low - voltage switch does not have a communication function, after open - phase and overload tripping occur, customers need to report the fault before the repair personnel can go to the site for emergency repair, which wastes the emergency repair time and reduces the power supply reliability and customer service satisfaction.

[0004] Aiming at the above problems, no effective solution has been proposed yet. Summary of the Utility Model

[0005] An embodiment of the utility model provides a self - resetting voltage protection switch to at least solve the technical problem that the low - voltage switch in related technologies cannot automatically restore power after the fault of the power grid line disappears, resulting in low power supply reliability.

[0006] According to one aspect of the embodiment of the utility model, a self - resetting voltage protection switch is provided, including: The self - resetting voltage protection switch includes: a sensor connected to a controller for collecting current data and voltage data on the power grid line; the controller, which is embedded in the self - resetting voltage protection switch and connected to the sensor, and is used for sending a tripping signal to a tripping component or a closing signal to a closing component based on the current data and the voltage data; the tripping component, which is embedded in the self - resetting voltage protection switch and connected to the controller, and is used for performing tripping processing after receiving the tripping signal sent by the controller; the closing component, which is embedded in the self - resetting voltage protection switch and connected to the controller, and is used for performing closing processing after receiving the closing signal sent by the controller.

[0007] Further, the self - resetting voltage protection switch further includes: a data input circuit, which is connected to the sensor and is provided with an external interface, where the external interface is used to externally connect a keyboard; the data input circuit is used to transmit threshold information to the sensor, and the threshold information is obtained through the input of the keyboard; a clock circuit, which is connected to the sensor and is used to transmit time information to the sensor.

[0008] Further, the self - resetting voltage protection switch further includes: an alarm output circuit, which is connected to the sensor and is used to receive the fault information transmitted by the sensor, where the fault information is the information obtained by the sensor based on the current data, the voltage data, the threshold information, and the time information to identify the fault current and / or fault voltage existing on the power grid line.

[0009] Further, the self - resetting voltage protection switch further includes: a communication circuit, which is connected to the sensor and is used to establish a communication connection with an external terminal.

[0010] Further, the self - resetting voltage protection switch further includes: a display screen, which is arranged outside the self - resetting voltage protection switch and is used to display the load current and the fault parameters.

[0011] Further, the self - resetting voltage protection switch further includes: a detection circuit, which is connected to the sensor and the processing circuit and is used to detect the current data and the voltage data to obtain voltage detection data and current detection data; the processing circuit, which is connected to the sensor and the detection circuit and is used to process the received voltage detection data and current detection data and send the processed current data and voltage data to the sensor for fault identification.

[0012] Further, the tripping component includes: an overload short - circuit protection circuit, which is used to control the electromagnetic release to start after receiving the tripping signal; the electromagnetic release, which is installed on the switch of the power grid line and is used to disconnect the switch.

[0013] Further, the closing component includes: an electric operation drive circuit, which is used to control the electric operator to start after receiving the closing signal; the electric operator, which is installed on the switch of the power grid line and is used to close the switch.

[0014] Further, the type of the detection circuit includes at least one of the following: a voltage detection circuit, a leakage current detection circuit, and a current detection circuit.

[0015] Furthermore, the self - resetting voltage protection switch is connected to a power supply circuit, and the power supply circuit is used to supply power to the self - resetting voltage protection switch.

[0016] In the present utility model, the self - resetting voltage protection switch includes: a sensor, which is connected to a controller and is used to collect current data and voltage data on the power grid line; a controller, which is embedded inside the self - resetting voltage protection switch and is connected to the sensor, and is used to send a tripping signal to a tripping component or a closing signal to a closing component based on the current data and voltage data; a tripping component, which is embedded inside the self - resetting voltage protection switch and is connected to the controller, and is used to perform tripping processing after receiving the tripping signal sent by the controller; a closing component, which is embedded inside the self - resetting voltage protection switch and is connected to the controller, and is used to perform closing processing after receiving the closing signal sent by the controller.

[0017] In the present utility model, a self - resetting voltage protection switch is constructed. By embedding a controller, a tripping component, and a closing component in the self - resetting voltage protection switch, the switch volume can be reduced. And by monitoring the real - time collected current data and voltage data through the controller, fault events on the power grid line can be identified in real time, so that tripping processing can be performed by the tripping component when a fault event occurs, and closing processing can be performed by the closing component after the fault event disappears. It can not only identify the fault event in time, but also automatically restore power after the fault on the power grid line disappears, effectively reducing manual operation and maintenance and improving power supply reliability. Furthermore, it solves the technical problem in the related art that the low - voltage switch cannot automatically restore power after the fault on the power grid line disappears, resulting in low power supply reliability.

[0018] In the present utility model, the proposed self - resetting voltage protection switch is applicable to a distribution power grid with an alternating current frequency of 50 Hz (Hertz) and a rated working voltage of AC (Alternating Current) 400 V (Volts). It can be used in systems such as a three - phase four - wire neutral - point - directly - grounded power supply system and a power - using system, and has functions such as overload protection, short - circuit protection, phase - loss protection, over - voltage protection, under - voltage protection, and residual current operation protection. It can protect the circuit and electrical equipment from damage, and at the same time can also provide protection against possible grounding faults and indirect contact with people in the circuit.

[0019] In the present utility model, the proposed self - resetting voltage protection switch can be applied to the low - voltage rural power grid (i.e., the low - voltage power system for rural areas), can be installed in front of the electricity meter, can realize the real - time tracking function of the operation information of the low - voltage switch, has protection functions such as open - phase tripping, and can perform a tripping operation after an open - phase event occurs in the line, thus being able to avoid the occurrence of the burnout event caused by the operation of low - voltage sensitive three - phase motors, reducing customer complaints and equipment compensation. At the same time, the switch has a reclosing function, can improve the user's electricity use safety, eliminate the hazards and losses caused by open - phase, enhance the user's service satisfaction, and can improve the low - voltage operation and maintenance level. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings described herein are used to provide a further understanding of the present utility model and constitute a part of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation of the present utility model. In the drawings:

[0021] Figure 1 is a schematic diagram of an optional self - resetting voltage protection switch according to an embodiment of the present utility model;

[0022] Figure 2 is a schematic diagram of an optional tripping assembly according to an embodiment of the present utility model;

[0023] Figure 3 is a schematic diagram of an optional closing assembly according to an embodiment of the present utility model;

[0024] Figure 4 is a schematic diagram of an optional power supply circuit according to an embodiment of the present utility model;

[0025] Figure 5 is a schematic diagram of the overall structure of an optional self - resetting voltage protection switch powered by a power supply circuit according to an embodiment of the present utility model.

[0026] Among them, 1, self - resetting voltage protection switch; 10, sensor; 20, controller; 30, tripping assembly; 301, overload short - circuit protection circuit; 302, electromagnetic release; 40, closing assembly; 401, electric operation drive circuit; 402, electric operator; 50, data input circuit; 501, keyboard; 60, clock circuit; 70, alarm output circuit; 80, communication circuit; 90, display screen; 100, detection circuit; 101, voltage detection circuit; 102, leakage current detection circuit; 103, current detection circuit; 110, processing circuit; 120, power supply circuit; 121, voltage power supply circuit; 122, current power supply circuit. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] In order to enable those skilled in the art to better understand the solution of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0028] It should be noted that the terms "first", "second", etc. in the specification and claims of the present utility model and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily need to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present utility model described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0029] In the present utility model, a low-voltage switch with functions of open-phase tripping, overload reclosing and leakage tripping is constructed, and has the functions of sending defect information and tripping information. The low-voltage switch is internally provided with a micro voltage and current acquisition module, which can sense the open-phase and overcurrent states of the switch, thereby triggering the switch to trip. At the same time, for the overload tripping of the switch, based on the time logic strategy, after the switch trips, after part of the user's load is cut off and the switch temperature drops, the reclosing is performed again to restore power supply, and has the function of sending the open-phase information and the switch action information, so that the operation and maintenance personnel can know the operation information of the switch in real time, improving the operation and maintenance management level of the distribution network.

[0030] The present utility model will be described in detail below in conjunction with each embodiment.

[0031] Embodiment 1

[0032] According to an embodiment of the present utility model, an embodiment of a self-resetting voltage protection switch is provided.

[0033] Figure 1 is a schematic diagram of an optional self-resetting voltage protection switch according to an embodiment of the present utility model, as Figure 1As shown, the self - resetting voltage protection switch 1 includes: a sensor 10, a controller 20, a tripping component 30, and a closing component 40. Among them, the sensor 10 is connected to the controller 20 and is used to collect current data and voltage data on the power grid line; the controller 20 is embedded inside the self - resetting voltage protection switch 1 and is connected to the sensor 10. It is used to send a tripping signal to the tripping component 30 or a closing signal to the closing component 40 based on the current data and voltage data; the tripping component 30 is embedded inside the self - resetting voltage protection switch 1 and is connected to the controller 20. It is used to perform tripping processing after receiving the tripping signal sent by the controller 20; the closing component 40 is embedded inside the self - resetting voltage protection switch 1 and is connected to the controller 20. It is used to perform closing processing after receiving the closing signal sent by the controller 20.

[0034] In the embodiment of the present utility model, by embedding the controller 20, the tripping component 30, and the closing component 40 in the self - resetting voltage protection switch 1, the volume of the switch can be reduced. And by monitoring the current data and voltage data collected in real - time through the controller 20, the fault events on the power grid line can be identified in real - time. When a fault event occurs, tripping processing is performed through the tripping component 30, and when the fault event disappears, closing processing is performed through the closing component 40. It can not only identify the fault event in time but also automatically restore power after the fault on the power grid line disappears, effectively reducing manual operation and maintenance and improving the power supply reliability. Furthermore, it solves the technical problem in the related art that the low - voltage switch cannot automatically restore power after the fault on the power grid line disappears, resulting in low power supply reliability.

[0035] Optionally, the self - resetting voltage protection switch 1 further includes: a data input circuit 50. The data input circuit 50 is connected to the sensor 10 and is provided with an external interface. Among them, the external interface is used to connect an external keyboard 501; the data input circuit 50 is used to transmit threshold information to the sensor 10, and the threshold information is obtained through the input of the keyboard 501; a clock circuit 60. The clock circuit 60 is connected to the sensor 10 and is used to transmit time information to the sensor 10.

[0036] In the embodiment of the present utility model, the self - resetting voltage protection switch 1 may further include: a data input circuit 50 and a clock circuit 60. Among them, the data input circuit 50 is connected to the sensor 10 and is provided with an external interface to connect an external keyboard 501 through the external interface; the clock circuit 60 is connected to the sensor 10 and can transmit time information to the sensor 10.

[0037] In the embodiment of the present utility model, the data input circuit 50 can receive some threshold information input by the external keyboard 501, such as voltage threshold, current threshold, etc., and transmit the received threshold information to the sensor 10, so that the sensor 10 combines these threshold information to judge the fault events occurring on the power grid line (such as open-phase event, overload event, leakage event, overcurrent event, etc.).

[0038] In the embodiment of the present utility model, the sensor 10 can also combine the received time information (i.e., the time when each current signal and voltage signal occurs and the duration, etc.) to judge the fault events occurring on the power grid line.

[0039] In the embodiment of the present utility model, the controller 20 is an intelligent control circuit composed of a single-chip microprocessor, such as an MCU (Microcontroller Unit) controller, with built-in logic control software. According to the current data and voltage data transmitted by the sensor 10, the threshold information transmitted by the data input circuit 50, and the time information transmitted by the clock circuit 60, it analyzes the line condition, issues a trip signal in time when a fault event occurs on the line, and issues a closing signal in time after the fault event disappears (such as when the voltage is within the normal range and the duration after the overcurrent disappears reaches a certain duration, etc.). This is not only beneficial to protecting the equipment safety, but also can improve the timeliness of operation and maintenance and ensure the stability of power supply.

[0040] Optionally, the self-resetting voltage protection switch 1 further includes: an alarm output circuit 70, which is connected to the sensor 10 and is used to receive the fault information transmitted by the sensor 10. The fault information is the information obtained by the sensor 10 based on the current data, voltage data, threshold information, and time information to identify the fault current and / or fault voltage existing on the power grid line.

[0041] In the embodiment of the present utility model, the self-resetting voltage protection switch 1 can also include: an alarm output circuit 70, which is connected to the sensor 10 and is used to receive the fault information transmitted by the sensor 10. The fault information is the information obtained by the sensor 10 based on the current data, voltage data, threshold information, and time information to identify the fault current and / or fault voltage existing on the power grid line, such as an open-phase event occurring at a certain moment and the duration of the open-phase event, etc.

[0042] Optionally, the self-resetting voltage protection switch 1 further includes: a communication circuit 80, which is connected to the sensor 10 and is used to establish a communication connection with an external terminal.

[0043] In an embodiment of the present utility model, the self - resetting voltage protection switch 1 may further include: a communication circuit 80, which is connected to the sensor 10 and is used to establish a communication connection with an external terminal (such as an intelligent distribution transformer terminal, a host computer, etc.). In this embodiment, the communication connection may be a wireless communication connection or a wired communication connection, and through the communication connection, communication information such as fault information and the current power consumption situation of the power grid line can be transmitted to the external terminal.

[0044] Optionally, the self - resetting voltage protection switch 1 further includes: a display screen 90, which is arranged outside the self - resetting voltage protection switch 1 and is used to display the load current and fault parameters.

[0045] In an embodiment of the present utility model, the self - resetting voltage protection switch 1 may further include: a display screen 90, which is arranged outside the self - resetting voltage protection switch 1 and can display the current load current and fault parameters. For example, it can display the current load current of the power grid line in real time, and can display the corresponding fault identifier when a fault event occurs, so as to provide operation and maintenance reference for operation and maintenance personnel.

[0046] Optionally, the self - resetting voltage protection switch 1 further includes: a detection circuit 100, which is connected to the sensor 10 and the processing circuit 110 and is used to detect current data and voltage data to obtain voltage detection data and current detection data; a processing circuit 110, which is connected to the sensor 10 and the detection circuit 100 and is used to process the received voltage detection data and current detection data, and send the processed current data and voltage data to the sensor 10 for fault identification.

[0047] In an embodiment of the present utility model, the self - resetting voltage protection switch 1 may further include: a detection circuit 100 and a processing circuit 110. Among them, the detection circuit 100 is connected to the sensor 10 and the processing circuit 110, and can receive the current data and voltage data collected by the sensor 10, and then detect the current data and voltage data to obtain voltage detection data and current detection data; the processing circuit 110 is connected to the sensor 10 and the detection circuit 100, and can process the received voltage detection data and current detection data, and send the processed current data and voltage data to the sensor 10 for fault identification.

[0048] In an embodiment of the present utility model, the processing circuit 110 may be a voltage / current / leakage signal processing circuit, and after further processing the detected voltage detection data and current detection data, it is transmitted to the sensor 10 for fault identification.

[0049] An optional embodiment, the types of the detection circuit 100 include at least one of the following: a voltage detection circuit 101, a leakage current detection circuit 102, and a current detection circuit 103.

[0050] In an embodiment of the present invention, the detection circuit 100 can be a voltage detection circuit 101, a leakage current detection circuit 102, or a current detection circuit 103 to detect current data or voltage data with different precisions.

[0051] Optionally, the trip assembly 30 includes: an overload short-circuit protection circuit 301 for controlling the start of the electromagnetic release 302 after receiving a trip signal; and an electromagnetic release 302 installed on the switch of the power grid line for disconnecting the switch.

[0052] Figure 2 is a schematic diagram of an optional trip assembly according to an embodiment of the present invention. As Figure 2 shown, the trip assembly 30 includes: an overload short-circuit protection circuit 301 and an electromagnetic release 302.

[0053] In an embodiment of the present invention, the overload short-circuit protection circuit 301 in the trip assembly 30 can control the start of the electromagnetic release 302 after receiving a trip signal, so as to disconnect the switch on the power grid line and stop power supply.

[0054] In an embodiment of the present invention, the electromagnetic release 302 is a device that uses electromagnetic principles to achieve rapid power-off and can be installed on the switch of the power grid line to disconnect the switch when starting.

[0055] Optionally, the closing assembly 40 includes: an electric operation drive circuit 401 for controlling the start of the electric operator 402 after receiving a closing signal; and an electric operator 402 installed on the switch of the power grid line for closing the switch.

[0056] Figure 3 is a schematic diagram of an optional closing assembly according to an embodiment of the present invention. As Figure 3 shown, the closing assembly 40 includes: an electric operation drive circuit 401 and an electric operator 402.

[0057] In an embodiment of the present invention, the electric operation drive circuit 401 in the closing assembly 40 can control the start of the electric operator 402 after receiving a closing signal to automatically close the switch and start power supply.

[0058] In the embodiment of the present utility model, the electric operator 402 is installed on the electric switch on the power grid line and is used to close the switch to start power supply. In this way, power supply can be restored in time after a fault event disappears, which is beneficial to the stability of power supply and reduces manual operation and maintenance.

[0059] Optionally, the self - resetting voltage protection switch 1 is connected to the power supply circuit 120, and the power supply circuit 120 is used to supply power to the self - resetting voltage protection switch 1.

[0060] In the embodiment of the present utility model, the self - resetting voltage protection switch 1 can be connected to the power supply circuit 120 to use the power supply circuit 120 to supply power to the self - resetting voltage protection switch 1.

[0061] In some optional embodiments, the power supply circuit 120 may include: a voltage power supply circuit 121 and a current power supply circuit 122.

[0062] Figure 4 is a schematic diagram of an optional power supply circuit according to the embodiment of the present utility model, as Figure 4 shown, the power supply circuit 120 includes: a voltage power supply circuit 121 and a current power supply circuit 122.

[0063] Figure 5 is a schematic diagram of the overall structure of an optional self - resetting voltage protection switch powered by a power supply circuit according to the embodiment of the present utility model, as Figure 5 shown, the self - resetting voltage protection switch 1 includes: a sensor 10, a controller 20, a tripping component 30, a closing component 40, a data input circuit 50, a clock circuit 60, an alarm output circuit 70, a communication circuit 80, a display screen 90, a detection circuit 100, a processing circuit 110, etc., and is powered by the power supply circuit 120. Among them, the tripping component 30 includes: an overload short - circuit protection circuit 301 and an electromagnetic release 302; the closing component 40 includes: an electric operation drive circuit 401 and an electric operator 402; the detection circuit 100 includes: a voltage detection circuit 101, a leakage current detection circuit 102, and a current detection circuit 103; the power supply circuit 120 includes: a voltage power supply circuit 121 and a current power supply circuit 122.

[0064] As Figure 5As shown in the figure, the data input circuit 50 can input threshold information to the controller 20 through the keyboard 501. The sensor 10 can collect the current data and voltage data on the line. After being detected and processed by the detection circuit 100 and the processing circuit 110, these data are transmitted to the controller 20. The clock circuit 60 can also input time information to the controller 20. Then, the controller 20 can analyze the fault events on the line according to the current data, voltage data, threshold information and time information, and can send a trip signal to the trip component 30 after identifying the fault event to cut off the power supply of the line, and can send a closing signal to the closing component 40 after judging that the fault event has disappeared to supply power to the line, which is not only beneficial to protecting the equipment safety, but also can improve the timeliness of operation and maintenance and ensure the stability of power supply.

[0065] In the embodiment of the present utility model, the self - resetting voltage protection switch 1 has protection functions such as over - current and short - circuit protection, as well as functions such as automatic reclosing, current display, real - time load current display, action status indication, and trip data display. It can also be equipped with external plug - in devices such as plug - in lightning protection modules and adapters.

[0066] In the embodiment of the present utility model, the self - resetting voltage protection switch 1 is changed from a combination of an electric operating mechanism and an air circuit breaker to an integrated switch, which reduces the installation position and simplifies the wiring. It has an operation method with function characteristics that can be set, and the required functions such as action current, breaking time, and main circuit current can be set according to the actual situation. And, the self - resetting voltage protection switch 1 has an intelligent control circuit composed of a single - chip microprocessor, which can set and display the load current, can monitor the cause of fault tripping, display the fault parameters at the time of tripping, and can query the total number of various fault trippings. In addition, the self - resetting voltage protection switch 1 also has a communication function, and there are multiple communication protocols to choose from, which can establish a communication function with intelligent distribution transformer terminals, upper computers, etc. to realize functions such as remote parameter adjustment, information query, and downloading of fault parameters. The self - resetting voltage protection switch 1 can also record and query detailed data such as the phase sequence, cause, and tripping time that cause tripping, and has a historical data recording function.

[0067] The serial numbers of the above - mentioned embodiments of the present utility model are only for description and do not represent the advantages or disadvantages of the embodiments.

[0068] The embodiments or examples of the present disclosure are not exhaustive. They are only illustrations of some embodiments or examples and do not constitute specific limitations on the protection scope of the present disclosure. Without contradiction, each step in a certain embodiment or example can be implemented as an independent example, and the steps can be combined arbitrarily. For example, the solution after removing some steps in a certain embodiment or example can also be implemented as an independent example, and the order of the steps in a certain embodiment or example can be exchanged arbitrarily. In addition, the optional modes or optional examples in a certain embodiment or example can be combined arbitrarily; furthermore, the embodiments or examples can be combined arbitrarily. For example, some or all of the steps of different embodiments or examples can be combined arbitrarily, and a certain embodiment or example can be combined arbitrarily with the optional modes or optional examples of other embodiments or examples.

[0069] In the above embodiments of the present utility model, the descriptions of each embodiment have their own focuses. For the parts not detailed in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0070] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present utility model, several improvements and refinements can be made, and these improvements and refinements should also be regarded as within the protection scope of the present utility model.

Claims

1. A self-resetting voltage protection switch, characterized in that: include: The self-resetting voltage protection switch (1) comprises: A sensor (10), the sensor (10) being connected to a controller (20) and used for collecting current data and voltage data on a power grid line; The controller (20) is embedded in the self-resetting voltage protection switch (1), connected to the sensor (10), and used to send a trip signal to the trip component (30) or send a closing signal to the closing component (40) based on the current data and the voltage data; The disconnecting component (30) is embedded in the self-resetting voltage protection switch (1), connected to the controller (20), and used for performing disconnecting processing after receiving the disconnecting signal sent by the controller (20); The closing component (40) is embedded in the self-resetting voltage protection switch (1) and connected to the controller (20) for performing closing processing after receiving the closing signal sent by the controller (20).

2. The self-resetting voltage protection switch according to claim 1, characterized in that: The self-resetting voltage protection switch (1) further comprises: a data input circuit (50), the data input circuit (50) being connected to the sensor (10) and provided with an external interface, wherein the external interface is used to connect to an external keyboard (501); the data input circuit (50) is used to transmit threshold information to the sensor (10), the threshold information being obtained through input from the keyboard (501); A clock circuit (60), the clock circuit (60) is connected to the sensor (10) and is used to transmit time information to the sensor (10).

3. The self-resetting voltage protection switch according to claim 2, characterized in that: The self-resetting voltage protection switch (1) further comprises: An alarm output circuit (70) is connected to the sensor (10) and is used to receive fault information transmitted by the sensor (10), wherein the fault information is information obtained by the sensor (10) identifying the fault current and / or fault voltage existing on the power grid line based on the current data, the voltage data, the threshold information and the time information.

4. The self-resetting voltage protection switch according to claim 1, characterized in that: The self-resetting voltage protection switch (1) further comprises: A communication circuit (80), the communication circuit (80) is connected to the sensor (10) and is used to establish a communication connection with an external terminal.

5. The self-resetting voltage protection switch according to claim 1, characterized in that: The self-resetting voltage protection switch (1) further comprises: A display screen (90), the display screen (90) is arranged outside the self-resetting voltage protection switch (1) and is used to display load current and fault parameters.

6. The self-resetting voltage protection switch according to claim 1, characterized in that: The self-resetting voltage protection switch (1) further comprises: A detection circuit (100), the detection circuit (100) being connected to the sensor (10) and the processing circuit (110), and being used to detect the current data and the voltage data to obtain voltage detection data and current detection data; The processing circuit (110) is connected to the sensor (10) and the detection circuit (100) and is used to process the received voltage detection data and the current detection data, and send the processed current data and the voltage data to the sensor (10) for fault identification.

7. The self-resetting voltage protection switch according to claim 1, characterized in that: The circuit breaker assembly (30) comprises: An overload section protection circuit (301), the overload section protection circuit (301) being used to control the electromagnetic trip device (302) to start after receiving the trip signal; The electromagnetic disconnector (302) is installed on a switch on the power grid line and is used to disconnect the switch.

8. The self-resetting voltage protection switch according to claim 1, characterized in that: The closing assembly (40) comprises: An electric operation drive circuit (401), the electric operation drive circuit (401) being used to control the electric operator (402) to start after receiving the closing signal; The electric operator (402) is installed on a switch on the power grid line and is used to open the switch.

9. The self-resetting voltage protection switch according to claim 6, characterized in that: The type of the detection circuit (100) includes at least one of the following: a voltage detection circuit (101), a leakage current detection circuit (102), and a current detection circuit (103).

10. The self-resetting voltage protection switch according to claim 6, characterized in that: The self-resetting voltage protection switch (1) is connected to a power supply circuit (120), and the power supply circuit (120) is used to supply power to the self-resetting voltage protection switch (1).

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