Intelligent surge protection device

Abstract

The invention relates to the technical field of electrical protection devices, in particular to an intelligent surge protection device, which comprises a remote control tripping module, a leakage current detection module, a temperature detection module and a voltage detection module, and is characterized in that the leakage current detection module, the temperature detection module and the voltage detection module are all connected with the remote control tripping module; when the leakage current detection module detects that the leakage current of the intelligent surge protection device reaches a set threshold value and is maintained for a preset time, the remote control tripping module carries out tripping coil processing; when the temperature detection module detects that the temperature of the intelligent surge protection device reaches a threshold value, the remote control tripping module carries out tripping coil processing; when the voltage detection module detects that the overvoltage of the intelligent surge protection device reaches a set threshold value and is maintained for a certain time, the remote control tripping module carries out tripping coil processing. According to the arrangement, various parameter conditions of the SPD are detected online in real time, remote control tripping actions are made in time, and real-time detection, pre-judgment in advance, tripping protection in advance and fault prevention are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical protection devices, and in particular to an intelligent surge protector with a remote control tripping function in the field of new energy. Background Art

[0002] Surge protection device (SPD), also called lightning arrester, is an electronic device that provides safety protection for various electronic equipment, instruments and meters, and communication lines. When a spike current or voltage suddenly occurs in an electrical circuit or communication line due to external interference, the surge protector can conduct and shunt in a very short time, thereby preventing the surge from damaging other equipment in the circuit. SPD is an indispensable device for lightning protection of electronic equipment. Its function is to limit the instantaneous overvoltage that penetrates into the power line and signal transmission line to the voltage range that the equipment or system can withstand, or to discharge the strong lightning current into the ground to protect the protected equipment or system from impact.

[0003] At present, the functionality of traditional SPD devices with backup protection function is relatively simple. It mainly trips and cuts off the power supply after the short circuit fault caused by the deterioration of SPD equipment causes a short circuit fault in the power supply system. And because the tripping and power cutting action occurs only after the fault occurs, it cannot take action in advance to prevent and avoid the occurrence of faults.

[0004] It should be noted that the information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes prior art already known to a person skilled in the art. Summary of the invention

[0005] The present invention provides an intelligent surge protector, which comprises a remote control tripping module, a leakage current detection module, a temperature detection module and a voltage detection module, wherein the leakage current detection module, the temperature detection module and the voltage detection module are respectively connected to the remote control tripping module; wherein the leakage current detection module is used to detect the leakage current of the intelligent surge protector in real time, and when the leakage current detection module detects that the leakage current of the intelligent surge protector reaches a set threshold and is maintained for a preset time, the remote control tripping module performs a tripping coil process to cut off the power supply; the temperature detection module is used to detect the temperature of the intelligent surge protector in real time, and when the temperature detection module detects that the temperature of the intelligent surge protector reaches the threshold, the remote control tripping module performs a tripping coil process to cut off the power supply; the voltage detection module is used to detect the voltage of the intelligent surge protector in real time, and when the voltage detection module detects that the overvoltage of the intelligent surge protector reaches the set threshold and is maintained for a certain time, the remote control tripping module performs a tripping coil process to cut off the power supply; the preset time is one cycle of sinusoidal alternating current.

[0006] Furthermore, the leakage current detection module includes a magnetic ring coil L1, a resistor R1, a resistor R2, a rectifier, a voltage stabilizing component and a capacitor C1. The magnetic ring coil L1, the resistor R1 and the rectifier are connected in parallel, the voltage stabilizing component and the capacitor C1 are connected in parallel, the first end of the rectifier is connected to the first end of the resistor R2, the second end of the rectifier is connected to the first end of the voltage stabilizing component, and the second end of the resistor R2 is connected to the second end of the voltage stabilizing component.

[0007] Furthermore, the period is 20 ms.

[0008] Furthermore, the voltage stabilizing component adopts one of a voltage stabilizing tube, an electrostatic protection diode, and a TVS tube.

[0009] Furthermore, the intelligent surge protector also includes a communication circuit module and a ground wire on-off detection module, and the communication circuit module and the ground wire on-off detection module are respectively connected to the remote control tripping module.

[0010] Furthermore, the temperature detection module includes a resistor R3 and a thermistor RT1, and the resistor R3 and the thermistor RT1 are connected in series.

[0011] Furthermore, the thermistor RT1 is an NTC thermistor.

[0012] Furthermore, the voltage detection module includes a wiring terminal, a rectifier, a resistor R4, a resistor R5 and a capacitor C2, the first end and the second end of the wiring terminal are respectively connected to the first end and the second end of the rectifier, the third end and the fourth end of the rectifier are respectively connected to the first end of the resistor R4 and the second end of the capacitor C2, the second end of the resistor R4 is connected to the first end of the capacitor C2, and the resistor R5 and the capacitor C2 are connected in parallel.

[0013] Furthermore, the remote control tripping module includes a diode D1, a transistor Q1, a resistor R6, a capacitor C3, a tripping coil L2, a circuit breaker F1, a mechanical switch and a varistor MOV1, the diode D1 is connected to the base of the transistor Q1, the collector of the transistor Q1 is connected to the first end of the capacitor C3 and the first end of the tripping coil L2, the emitter of the transistor Q1 is connected to the second end of the resistor R6, the first end of the resistor R6 is connected in series to the second end of the capacitor C3, the tripping coil L2 is coupled to the mechanical switch, and the mechanical switch is located between the circuit breaker F1 and the varistor MOV1.

[0014] Furthermore, the trip coil L2 cuts off the power supply before the circuit breaker F1.

[0015] The intelligent surge protector provided by the present invention detects the changes of various parameters of the SPD and the system voltage in real time online through the matching setting of a remote control tripping module, a leakage current detection module, a temperature detection module and a voltage detection module, and makes a remote control tripping action in time, thereby realizing real-time detection, early prediction, early tripping protection, preventing the occurrence of faults, and adding an intelligent sound and light alarm function.

[0016] Other features and beneficial effects of the present invention will be described in the following description, and some of the technical features and beneficial effects can be obviously derived from the description or understood by implementing the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief introduction is given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, some of the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 is a schematic diagram of a framework of an intelligent surge protector provided by an embodiment of the present invention; Figure 2 is a circuit diagram of a leakage current detection module provided by an embodiment of the present invention; Figure 3 is a circuit diagram of a temperature detection module provided by an embodiment of the present invention; Figure 4 is a circuit diagram of a voltage detection module provided by an embodiment of the present invention; Figure 5 is a circuit diagram of a remote control tripping module provided in one embodiment of the present invention; Figure 6 1 is a circuit diagram of a ground wire continuity detection module provided by an embodiment of the present invention; Figure 7 is a circuit diagram of a communication circuit module provided by an embodiment of the present invention; Figure 8 It is a circuit diagram of a failure detection module provided in one embodiment of the present invention.

[0019] Reference numerals: 10-remote control tripping module; 20-leakage current detection module; 30-temperature detection module; 40-voltage detection module. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments; the technical features designed in different implementation modes of the present invention described below can be combined with each other as long as they do not conflict with each other; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0021] In the description of the present invention, it should be understood that the terms "center", "lateral", "up", "down", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more. In addition, the term "including" and any variation thereof all mean "at least including".

[0022] See also Figures 1 to 5 , Figure 1is a schematic diagram of a smart surge protector provided by an embodiment of the present invention. Figure 2 is a circuit diagram of a leakage current detection module 20 provided in one embodiment of the present invention, Figure 3 is a circuit diagram of a temperature detection module 30 provided in one embodiment of the present invention. Figure 4 is a circuit diagram of a voltage detection module 40 provided in an embodiment of the present invention. Figure 5 1 is a circuit diagram of a remote control tripping module 10 provided in accordance with an embodiment of the present invention.

[0023] To achieve at least one of the above advantages or other advantages, an embodiment of the present invention provides an intelligent surge protector. As shown in the figure, the intelligent surge protector includes a remote control tripping module 10, a leakage current detection module 20, a temperature detection module 30 and a voltage detection module 40.

[0024] The leakage current detection module 20 is connected to the remote control tripping module 10, and the leakage current detection module 20 is used to detect the leakage current of the intelligent surge protector in real time. When the leakage current of the intelligent surge protector (SPD) reaches the set threshold and maintains the preset time, it can be determined that the intelligent surge protector is in the process of degradation and damage, and the remote control signal can be output to the remote control tripping module 10 through a microcontroller (such as a single-chip microcomputer) and other devices to process the tripping coil, drive the tripping mechanism to operate, cut off the power supply and issue an alarm prompt to avoid further degradation and damage of the intelligent surge protector, and also avoid the occurrence of power failure. Considering the confirmation of frequency voltage overvoltage, the preset time is a cycle time of sinusoidal alternating current, and a cycle time is, for example, greater than or equal to 20ms. It is thus confirmed that it is an industrial frequency voltage overvoltage. On the contrary, if the preset time is set to other times or the preset time is not set, it will cause interference voltages, irregular instantaneous fluctuations, etc. in the electrical system to be judged, resulting in wrong judgments.

[0025] The temperature detection module 30 is connected to the remote control tripping module 10, and the temperature detection module 30 is used to detect the temperature of the intelligent surge protector in real time. When the intelligent surge protector deteriorates, the surface temperature of the intelligent surge protector will rise. When the temperature value reaches the set threshold, it can be determined that the intelligent surge protector is in the process of degradation and damage. The microcontroller can output a remote control signal to the remote control tripping module 10 to process the tripping coil, drive the tripping mechanism to cut off the power supply and issue an alarm prompt to prevent the intelligent surge protector from further degradation and damage, and also avoid the occurrence of power failure.

[0026] The voltage detection module 40 is connected to the remote control tripping module 10, and the voltage detection module 40 is used to detect the voltage of the intelligent surge protector in real time. When the voltage of the intelligent surge protector is overvoltage for too long, it will cause overvoltage breakdown and short circuit to the intelligent surge protector. The microcontroller can detect that the overvoltage of the intelligent surge protector reaches the set threshold and maintains for a certain period of time. The microcontroller outputs a remote control signal to the remote control tripping module 10 to process the tripping coil, drive the tripping mechanism to cut off the power supply and issue an alarm prompt to avoid breakdown and short circuit failure of the intelligent surge protector and power failure.

[0027] Considering that the leakage current of the intelligent surge protector is related to the working voltage applied to both ends of the intelligent surge protector, and the temperature is directly related to the leakage current. For example, when the leakage current is large, the temperature is high, and when the leakage current is small, the temperature is low. Therefore, when the performance of the intelligent surge protector is good, the system voltage is also stable, then the leakage current of the intelligent surge protector is at a small uA level, and the temperature is equivalent to the ambient temperature; when the system voltage has a long-term overvoltage, the leakage current of the intelligent surge protector will increase, and the heat will increase. If the overvoltage exceeds the maximum continuous operating voltage that the intelligent surge protector can withstand, even if it is only a few tens of milliseconds, the intelligent surge protector is also in danger of short circuit and fire. Therefore, the overvoltage, leakage current and temperature of the present invention can act together to remotely control the tripping module 10, and the remote tripping action occurs, and the protection effect is better. However, the present case is not limited to this, and it can also be controlled by reaching the threshold through a single parameter to control the remote tripping action. Regarding the judgment of the threshold and maintenance time of the leakage current, for example, when the leakage current of the intelligent surge protector reaches 2mA, the time is maintained for more than 20ms. Regarding the temperature threshold, different levels of thermistors will result in different tripping temperatures, so the temperature threshold is different and can be set according to the actual situation. Since overvoltage is the physical quantity that directly causes leakage and overtemperature of the intelligent surge protector, the causes of overvoltage are usually operating overvoltage, high-power motor start-stop moment, and surge overvoltage generated by lightning strikes around. Therefore, the threshold and time of overvoltage are related to the varistor and can be set according to the actual situation.

[0028] Compared with the traditional intelligent SPD, although the traditional SPD also has the function of detecting parameters such as voltage, leakage current, and temperature, it mainly uses these detected parameters for life warning or direct use, while the present invention detects these parameters and cooperates with the thresholds of each surge protector obtained during the experiment. Once the dangerous threshold is reached, the remote control tripping function is performed. For example, when conducting a thermal stability test, it is known that the intelligent surge protector is tripped after about 1.5 hours under a leakage current of 10mA (the surface temperature of the intelligent surge protector is about 125 degrees at this time). Therefore, the tripping threshold of the leakage current can be set to 50mA, that is, when the leakage current reaches 50mA, the remote control tripping process will be performed to cut off the power supply; it can also be when the surface temperature of the intelligent surge protector is detected to reach 100 degrees, the remote control tripping process is performed to avoid the continued deterioration of the intelligent surge protector and the occurrence of a short circuit accident. Similarly, in terms of voltage detection, the intelligent surge protector is tripped before the voltage rise lasts for a period of time that exceeds the tolerance of the intelligent surge protector.

[0029] In some embodiments, Figure 2 As shown, the leakage current detection module 20 includes a magnetic ring coil L1, a resistor R1, a resistor R2, a rectifier DB2, a voltage stabilizing component Z1 and a capacitor C1. The magnetic ring coil L1, the resistor R1 and the rectifier DB2 are connected in parallel, the voltage stabilizing component Z1 and the capacitor C1 are connected in parallel, the first end of the rectifier DB2 is connected to the first end of the resistor R2, the second end of the rectifier DB2 is connected to the first end of the voltage stabilizing component Z1, and the second end of the resistor R2 is connected to the second end of the voltage stabilizing component Z1. The magnetic ring coil L1 is inserted into the connection between the intelligent surge protector and the power supply line. When the intelligent surge protector deteriorates and generates leakage current, a corresponding induced voltage is generated in the magnetic ring coil L1, and a stable sinusoidal induced voltage is obtained at both ends of R1. After rectification by DB2, current limiting by R2, voltage limiting by Z1, and filtering by C1, it is sent to the ADC for micro-control processing, and the corresponding leakage current value is obtained after processing; when the leakage current value reaches the set tripping current value, the micro-control processor outputs a remote control tripping signal to the remote control tripping module 10, driving the tripping coil to operate, thereby cutting off the connection between the intelligent surge protector and the power supply, and preventing the intelligent surge protector from further degradation and short circuit.

[0030] In some embodiments, the rectifier DB2 may be a bridge rectifier. The bridge rectifier may be a full bridge, with two diodes forming connection points 1, 2, 3, and 4, with connection point 3 being the output "positive pole" connected to resistor R2; and connection point 4 being the output "negative pole" connected to resistor voltage stabilizing component Z1 and capacitor C1.

[0031] In some embodiments, the voltage stabilizing component Z1 may be a voltage stabilizing tube, an electrostatic protection diode, or a TVS tube.

[0032] In some embodiments, capacitor C1 is a ceramic chip capacitor. A ceramic chip capacitor is a capacitor that uses ceramic material as a dielectric, coats a layer of metal film on the ceramic surface, and then uses it as an electrode after high-temperature sintering. It can be used in a high-stability oscillation circuit as a loop, bypass capacitor, and pad capacitor.

[0033] In some embodiments, Figure 3 As shown, the temperature detection module 30 includes a resistor R3 and a thermistor RT1, and the resistor R3 and the thermistor RT1 are connected in series. When the temperature of the intelligent surge protector rises, the resistance of the thermistor RT1 decreases, and the voltage also decreases accordingly, and is sent to the ADC of the microcontroller for analog-to-digital conversion. The microcontroller calculates the measured temperature value of the intelligent surge protector and the ambient temperature value, and then compares them with the set tripping threshold. When the temperature value of the intelligent surge protector and the ambient temperature simultaneously meet the set tripping threshold value, a remote control tripping signal is output to the remote control tripping module 10 to drive the tripping coil to operate, thereby cutting off the connection between the intelligent surge protector and the power supply, and preventing the intelligent surge protector from further deterioration and short circuit. In some embodiments, the thermistor RT1 can be an NTC thermistor.

[0034] In some embodiments, Figure 4 As shown, the voltage detection module 40 includes a wiring terminal, a rectifier DB1, a resistor R4, a resistor R5 and a capacitor C2, the first end and the second end of the wiring terminal are respectively connected to the first end and the second end of the rectifier DB1, the third end and the fourth end of the rectifier DB1 are respectively connected to the first end of the resistor R4 and the second end of the capacitor C2, the second end of the resistor R4 is connected to the first end of the capacitor C2, and the resistor R5 and the capacitor C2 are connected in parallel. After the phase voltage is rectified by the rectifier DB1, it is divided by the resistor R4 and the resistor R5 and filtered by the capacitor C2, and then sent to the ADC of the microcontroller for analog-to-digital conversion and the phase voltage value is calculated. When the phase voltage value rises to the set tripping threshold, the microcontroller outputs a remote control tripping signal to the remote control tripping module 10, driving the tripping coil to operate, thereby cutting off the connection between the intelligent surge protector and the power supply, and preventing the intelligent surge protector from further deterioration and short circuit. The rectifier DB1 can use a bridge pile. The bridge pile can be a full bridge.

[0035] In some embodiments, Figure 5As shown, the remote control tripping module 10 includes a diode D1, a transistor Q1, a resistor R6, a capacitor C3, a tripping coil L2, a circuit breaker F1, a mechanical switch and a varistor MOV1, wherein the diode D1 is connected to the base of the transistor Q1, the collector of the transistor Q1 is connected to the first end of the capacitor C3 and the first end of the tripping coil L2, the emitter of the transistor Q1 is connected to the second end of the resistor R6, the first end of the resistor R6 is connected in series to the second end of the capacitor C3, the tripping coil L2 is coupled to the mechanical switch, and the mechanical switch is located between the circuit breaker F1 and the varistor MOV1. When the microcontroller detects that the intelligent surge protector has an abnormality such as over-temperature, over-current, or temporary over-voltage of the system voltage, the control signal is output, which reaches the base of Q1 through D1, turns on Q1, drives the electrical action of the tripping coil, causes the mechanical switch SPD-YK to trip and cut off the connection with the power supply, and avoids a short circuit fault of the intelligent surge protector, thereby causing a power short circuit. Furthermore, the trip coil L2 cuts off the power supply before the circuit breaker F1. The function of the circuit breaker F1 is mainly to trip and cut off the power supply when the surge protector has been damaged. This embodiment monitors the leakage current, temperature and system voltage changes of the SPD online in real time, and determines the state of the surge protector before the circuit breaker F1, determines whether remote tripping is required, and cuts off the power supply, thereby playing a role in early tripping protection and preventing faults.

[0036] In some embodiments, the intelligent surge protector further includes a communication circuit module and a ground wire on / off detection module. The communication circuit module and the ground wire on / off detection module are respectively connected to the remote control tripping module 10. The intelligent surge protector further includes a display screen, which is connected to the remote control tripping module. The display screen may be an OLED display screen.

[0037] In some embodiments, Figure 6 As shown, the ground wire on-off detection module includes resistors R7, R8, capacitor C24, optocoupler U10 and diode D14, resistor R8 is connected in series with diode D14, resistor R8 is connected to the input end of optocoupler U10, the output end of optocoupler U10 is connected in parallel with capacitor C24, and resistor R7 is coupled to the output end of optocoupler U10. After the phase voltage is half-wave rectified by diode D14, it is sent to the light-emitting diode of the optocoupler through the current limiting resistor R8 to form a loop with the ground wire. When the ground wire is normally turned on, the optocoupler is turned on and the optocoupler outputs a low level; when the ground wire is broken, the optocoupler is cut off and outputs a high level. When the high level is detected, the ground wire is judged to be broken, and the breaking information is sent to the display screen for display.

[0038] In some embodiments, Figure 7As shown, the communication circuit module includes an isolation optocoupler U5, an isolation optocoupler U6, an isolation optocoupler U7, a chip U9, a surge protection circuit, a current limiting resistor R28, a current limiting resistor R29, a current limiting resistor R31, a pull-up resistor R27, a pull-up resistor R30 and a pull-up resistor R32. The surge protection circuit is connected to the chip U9, the input end of the isolation optocoupler U5 is connected to the current limiting resistor R31 and the chip U9, the output end of the isolation optocoupler U5 is connected to the pull-up resistor R27, the output end of the isolation optocoupler U6 is connected to the pull-up resistor R32 and the chip U9, the input end of the isolation optocoupler U6 is connected to the current limiting resistor R29, the output end of the isolation optocoupler U7 is connected to the pull-up resistor R30 and the chip U9, and the input end of the isolation optocoupler U7 is connected to the current limiting resistor R28. When the host computer sends data, it is sent to the microcontroller through the surge protection circuit, communication chip U9, and isolation optocoupler U5; when the surge protector uploads data, the data sent by the microcontroller is uploaded through the isolation optocoupler U6, communication chip U9 and surge protection circuit output. U7 controls the communication chip, and U9 is in the data receiving state or data sending state.

[0039] Furthermore, the surge protection circuit includes a discharge tube G1, a resistor R34, a resistor R35, and a TVS tube. The first ends of the resistor R34 and the resistor R35 are respectively connected to the two ends of the discharge tube G1, and the second ends of the resistor R34 and the resistor R35 are respectively connected to the two ends of the TVS tube, and the two ends of the TVS tube are connected to the chip U9.

[0040] In some embodiments, Figure 8 As shown, the failure detection module includes a resistor R33 and a lightning protection module SPD-NC (normally closed), and the resistor R33 is connected to the lightning protection module SPD-NC. When the internal varistor of the lightning protection module SPD-NC trips, the microcontroller detects the trip signal and sends the trip information to the display screen for display.

[0041] In summary, an intelligent surge protector provided by an embodiment of the present invention detects various parameters of the SPD and changes in the system voltage in real time online through the combination of a remote control tripping module 10, a leakage current detection module 20, a temperature detection module 30 and a voltage detection module 40, and performs remote control tripping actions in a timely manner, thereby realizing real-time detection, early prediction, and early tripping protection to prevent faults from occurring, and adding an intelligent sound and light alarm function.

[0042] In addition, those skilled in the art should understand that, although there are many problems in the prior art, each embodiment or technical solution of the present invention can be improved in only one or several aspects, without having to solve all the technical problems listed in the prior art or background technology at the same time. Those skilled in the art should understand that the content not mentioned in a claim should not be used as a limitation on the claim.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An intelligent surge protector, characterized in that: The intelligent surge protector comprises a remote control tripping module, a leakage current detection module, a temperature detection module and a voltage detection module, wherein the leakage current detection module, the temperature detection module and the voltage detection module are respectively connected to the remote control tripping module; Among them, the leakage current detection module is used to detect the leakage current of the intelligent surge protector in real time. When the leakage current detection module detects that the leakage current of the intelligent surge protector reaches a set threshold and is maintained for a preset time, the remote control tripping module performs a tripping coil process to cut off the power supply; the temperature detection module is used to detect the temperature of the intelligent surge protector in real time. When the temperature detection module detects that the temperature of the intelligent surge protector reaches a threshold, the remote control tripping module performs a tripping coil process to cut off the power supply; the voltage detection module is used to detect the voltage of the intelligent surge protector in real time. When the voltage detection module detects that the overvoltage of the intelligent surge protector reaches a set threshold and is maintained for a certain time, the remote control tripping module performs a tripping coil process to cut off the power supply; the preset time is one cycle of sinusoidal alternating current.

2. The intelligent surge protector according to claim 1, characterized in that: The leakage current detection module includes a magnetic ring coil L1, a resistor R1, a resistor R2, a rectifier, a voltage stabilizing component and a capacitor C1. The magnetic ring coil L1, the resistor R1 and the rectifier are connected in parallel, the voltage stabilizing component and the capacitor C1 are connected in parallel, the first end of the rectifier is connected to the first end of the resistor R2, the second end of the rectifier is connected to the first end of the voltage stabilizing component, and the second end of the resistor R2 is connected to the second end of the voltage stabilizing component.

3. The intelligent surge protector according to claim 2, characterized in that: The one cycle is 20ms.

4. The intelligent surge protector according to claim 2, characterized in that: The voltage stabilizing component adopts one of a voltage stabilizing tube, an electrostatic protection diode and a TVS tube.

5. The intelligent surge protector according to claim 1, characterized in that: The intelligent surge protector further comprises a communication circuit module and a ground wire on-off detection module, and the communication circuit module and the ground wire on-off detection module are respectively connected to the remote control tripping module.

6. The intelligent surge protector according to claim 1, characterized in that: The temperature detection module includes a resistor R3 and a thermistor RT1 , and the resistor R3 and the thermistor RT1 are connected in series.

7. The intelligent surge protector according to claim 6, characterized in that: Thermistor RT1 is an NTC thermistor.

8. The intelligent surge protector according to claim 1, characterized in that: The voltage detection module includes a wiring terminal, a rectifier, a resistor R4, a resistor R5 and a capacitor C2, the first end and the second end of the wiring terminal are respectively connected to the first end and the second end of the rectifier, the third end and the fourth end of the rectifier are respectively connected to the first end of the resistor R4 and the second end of the capacitor C2, the second end of the resistor R4 is connected to the first end of the capacitor C2, and the resistor R5 and the capacitor C2 are connected in parallel.

9. The intelligent surge protector according to claim 1, characterized in that: The remote control tripping module includes a diode D1, a transistor Q1, a resistor R6, a capacitor C3, a tripping coil L2, a circuit breaker F1, a mechanical switch and a varistor MOV1. The diode D1 is connected to the base of the transistor Q1, the collector of the transistor Q1 is connected to the first end of the capacitor C3 and the first end of the tripping coil L2, the emitter of the transistor Q1 is connected to the second end of the resistor R6, the first end of the resistor R6 is connected in series to the second end of the capacitor C3, the tripping coil L2 is coupled to the mechanical switch, and the mechanical switch is located between the circuit breaker F1 and the varistor MOV1.

10. The intelligent surge protector according to claim 9, characterized in that: The trip coil L2 cuts off the power supply before the circuit breaker F1.

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