Circuit breaker system

Abstract

The embodiment of the utility model discloses a circuit breaker system. The circuit breaker system comprises a main control board and a power board. The main control board comprises a tripping module, a clock power supply module, a main control module and an isolation 485 module; the power panel comprises a rapid saturation power supply module; the rapid saturation power supply module, the tripping module, the clock power supply module and the isolation 485 module are all connected with the main control module; the rapid saturation power supply module is used for acquiring a current signal of a to-be-protected line, the master control module is used for controlling the tripping module to control the conduction state of the to-be-protected line according to the current signal, and the clock power supply module is used for continuously providing clock electric energy for the master control module. The isolation 485 module is used for improving anti-interference performance and stability of communication between the main control module and external equipment. According to the scheme, the tripping module can be controlled to execute the action of disconnecting the to-be-protected circuit so as to protect the to-be-protected circuit. And after the to-be-protected line is normally conducted, stable operation of the circuit breaker system can be ensured, and the maintenance cost of the circuit breaker system is reduced.

Description

Technical Field

[0001] The embodiment of the utility model relates to the technical field of circuit breakers, and in particular to a circuit breaker system. Background Art

[0002] At present, as the functions of circuit breakers are gradually increased, the cost of circuit breakers is gradually increased. Therefore, reducing the cost of circuit breakers has become an urgent problem to be solved by those skilled in the art. Utility Model Content

[0003] The embodiment of the utility model provides a circuit breaker system, so as to reduce the cost of the circuit breaker system and ensure the stable operation of the circuit breaker system at the same time.

[0004] The embodiment of the utility model provides a circuit breaker system, which includes a main control board and a power supply board;

[0005] The main control board includes a trip module, a clock power supply module, a main control module and an isolation 485 module;

[0006] The power board includes a fast saturation power supply module;

[0007] The fast saturation power supply module, the trip module, the clock power supply module and the isolation 485 module are all connected to the main control module;

[0008] The fast saturation power supply module is used to obtain the current signal of the line to be protected, the main control module is used to control the tripping module to control the conduction state of the line to be protected according to the current signal, the clock power supply module is used to continuously provide clock power to the main control module, and the isolation 485 module is used to improve the anti-interference and stability of the communication between the main control module and the external device.

[0009] Optionally, the clock power supply module includes a normal power supply unit, a backup power supply unit, a backup power collection unit and a competitive power supply unit;

[0010] The standby power collection unit is connected to the standby power supply unit, and the standby power collection unit is used to collect the power of the standby power supply unit;

[0011] The backup power supply unit and the normal power supply unit are both connected to the competition power supply unit, and the competition power supply unit is used to control the normal power supply unit to provide the clock power when the normal power supply unit exists, and to control the backup power supply unit to provide the clock power when the normal power supply unit does not exist;

[0012] The backup power collection unit and the competitive power supply unit are both connected to the main control module, and the main control module is used to obtain the power of the backup power supply unit and the clock power.

[0013] Optionally, the normal power supply unit includes a first fixed potential;

[0014] The backup power supply unit includes a button battery;

[0015] The standby power collection unit includes an electrostatic protection diode, a first resistor, a second resistor, a third resistor and a first capacitor;

[0016] The competitive power supply unit includes a first diode, a second diode, a fourth resistor and a second capacitor;

[0017] The negative electrode of the button battery, the anode of the electrostatic protection diode, the first end of the first resistor and the first end of the first capacitor are connected to a common ground; the second end of the first resistor and the first end of the second resistor are both connected to the first end of the third resistor; the second end of the first capacitor and the second end of the third resistor are both connected to the main control module; the anode of the button battery, the cathode of the electrostatic protection diode, the second end of the second resistor and the anode of the first diode are connected; the anode of the second diode is connected to the first fixed potential; the cathode of the first diode and the cathode of the second diode are both connected to the first end of the fourth resistor; the second end of the fourth resistor and the first end of the second capacitor are both connected to the main control module; and the second end of the second capacitor is grounded.

[0018] Optionally, the isolation 485 module includes a transceiver enable signal isolation unit, a transmission signal isolation unit, a reception signal isolation unit and a 485 signal processing unit;

[0019] The main control module is connected to the 485 signal processing unit through the transceiver enable signal isolation unit, the transmission signal isolation unit and the reception signal isolation unit respectively, and the 485 signal processing unit is connected to an external device.

[0020] Optionally, the transmission signal isolation unit includes a fifth resistor, a first optical coupler, a sixth resistor, a seventh resistor, a third capacitor, an eighth resistor and a first transistor;

[0021] The first end of the fifth resistor is connected to the main control module, the first end of the first optocoupler is connected to the second fixed potential, the second end of the fifth resistor is connected to the second end of the first optocoupler, the third end of the first optocoupler and the first end of the sixth resistor are both connected to the third fixed potential, the fourth end of the first optocoupler, the first end of the seventh resistor and the first end of the third capacitor are all connected to the first end of the eighth resistor, the second end of the sixth resistor and the first end of the first transistor are both connected to the 485 signal processing unit, the second end of the seventh resistor and the second end of the third capacitor are both connected to the control end of the first transistor, the second end of the first transistor is grounded, and the second end of the eighth resistor is grounded.

[0022] Optionally, the received signal isolation unit includes a ninth resistor, a second transistor, a tenth resistor, a fourth capacitor, a second optical coupler, an eleventh resistor and a twelfth resistor;

[0023] The first end of the ninth resistor and the first end of the second transistor are both connected to the main control module, the second end of the ninth resistor and the first end of the second optocoupler are both connected to the fourth fixed potential, the control end of the second transistor and the first end of the tenth resistor are both connected to the first end of the fourth capacitor, the second end of the tenth resistor, the second end of the fourth capacitor and the first end of the eleventh resistor are all connected to the second end of the second optocoupler, the second end of the second transistor is grounded, the second end of the eleventh resistor is grounded, the third end of the second optocoupler is connected to the fifth fixed potential end, the fourth end of the second optocoupler is connected to the first end of the twelfth resistor, and the second end of the twelfth resistor is connected to the 485 signal processing unit.

[0024] Optionally, the transceiver enable signal isolation unit includes: a thirteenth resistor, a third optical coupler, a fourteenth resistor, a fifteenth resistor, a fifth capacitor, a third transistor and a sixteenth resistor;

[0025] The first end of the thirteenth resistor is connected to the main control module, the second end of the thirteenth resistor is connected to the first end of the third optocoupler, the second end of the third optocoupler is grounded, the third end of the third optocoupler, the first end of the fourteenth resistor and the first end of the fifteenth resistor are all connected to the first end of the fifth capacitor, the second end of the fourteenth resistor and the first end of the third triode are both connected to the sixth fixed potential, the second end of the fifteenth resistor and the second end of the fifth capacitor are both connected to the control end of the third triode, the second end of the third triode and the first end of the sixteenth resistor are both connected to the 485 signal processing unit, and the second end of the sixteenth resistor is grounded.

[0026] Optionally, the 485 signal processing unit includes a 485 signal processing chip, a sixth capacitor, a seventh capacitor, a seventeenth resistor, an eighteenth resistor, an eighth capacitor and a ninth capacitor;

[0027] The transceiver enable signal isolation unit is connected to the first end of the 485 signal processing chip, the transmission signal isolation unit is connected to the second end of the 485 signal processing chip, and the reception signal isolation unit is connected to the third end of the 485 signal processing chip;

[0028] The first end of the sixth capacitor and the first end of the seventh capacitor are connected to a common ground, the second end of the sixth capacitor, the second end of the seventh capacitor and the fourth end of the 485 signal processing chip are all connected to the seventh fixed potential, the fifth end of the 485 signal processing chip, the first end of the seventeenth resistor and the first end of the eighth capacitor are all connected to the external device, the second end of the eighth capacitor is connected to the ground, the sixth end of the 485 signal processing chip, the first end of the eighteenth resistor and the first end of the ninth capacitor are all connected to the external device, the second end of the eighteenth resistor is connected to the eighth fixed potential, the second end of the seventeenth resistor and the second end of the ninth capacitor are connected to a common ground, and the seventh end of the 485 signal processing chip is grounded.

[0029] Optionally, the main control board further includes a liquid crystal screen, a temperature and humidity sensor, a button, a storage module, an indicator light and an isolated serial port;

[0030] The liquid crystal screen, the temperature and humidity sensor, the button, the storage module, the indicator light and the isolated serial port are all connected to the main control module.

[0031] Optionally, the circuit breaker system further comprises a voltage sampling board;

[0032] The power board also includes a metering module, a signal conditioning module, a power failure detection module and a voltage stabilization module;

[0033] The metering module, the signal conditioning module and the power-off detection module are all connected to the main control module, the line transformer to be protected and the voltage sampling board are all connected to the metering module, the fast saturation power supply module is connected to the line transformer to be protected, the fast saturation power supply module is connected to the signal conditioning module, and the power-off detection module and the fast saturation power supply module are all connected to the voltage stabilizing module.

[0034] Optionally, the fast saturation power supply module includes a rectifier unit, a current sampling unit and a power supply control unit;

[0035] The rectifier unit is connected to the line transformer to be protected, and the current sampling unit and the power supply control unit are both connected to the rectifier unit.

[0036] Optionally, the rectifier unit includes a first rectifier bridge, a second rectifier bridge and a third rectifier bridge;

[0037] The current sampling unit includes a nineteenth resistor, a twentieth resistor and a twenty-first resistor;

[0038] The power supply control unit includes a transient suppression diode, an inductor, a third diode, a transistor, a twenty-second resistor, a twenty-third resistor, a tenth capacitor, an eleventh capacitor, a twenty-fourth resistor, a twenty-fifth resistor, a twenty-sixth resistor, a twelfth capacitor and a comparator;

[0039] The first end and the second end of the first rectifier bridge, the first end and the second end of the second rectifier bridge, and the first end and the second end of the third rectifier bridge are all connected to the line transformer to be protected, the third end of the first rectifier bridge is connected to the first end of the nineteenth resistor, the second end of the nineteenth resistor is grounded, the third end of the second rectifier bridge is connected to the first end of the twentieth resistor, the second end of the twentieth resistor is grounded, the third end of the third rectifier bridge is connected to the first end of the twenty-first resistor, and the second end of the twenty-first resistor is grounded;

[0040] The fourth end of the first rectifier bridge, the fourth end of the second rectifier bridge, the fourth end of the third rectifier bridge, the first end of the transient suppression diode, and the first end of the inductor are all connected to the first end of the transistor, the second end of the transient suppression diode is grounded, the second end of the inductor is connected to the anode of the third diode, the cathode of the third diode, the first end of the twenty-second resistor, the first end of the tenth capacitor, and the first end of the eleventh capacitor are all connected to the first end of the twenty-fourth resistor, the control end of the transistor and the second end of the twenty-second resistor are all connected to the first end of the twenty-third resistor, and the second end of the transistor, the second end of the twenty-third resistor, the second end of the tenth capacitor, and the second end of the eleventh capacitor are commonly grounded;

[0041] The second end of the twenty-fourth resistor, the first end of the twenty-fifth resistor, the positive input end of the comparator and the first end of the twelfth capacitor are all connected to the first end of the twenty-sixth resistor, the second end of the twelfth capacitor and the twenty-fifth resistor are grounded to a common ground, the negative input end of the comparator is connected to a basic potential, the power supply end of the comparator is connected to a ninth fixed potential, the ground end of the comparator is grounded, and the output end of the comparator and the second end of the twenty-sixth resistor are both connected to the control end of the transistor.

[0042] Optionally, the circuit breaker system further comprises a connection plate;

[0043] The connection board includes a power supply protection module, an isolation 485 protection module, a temperature measurement module, an input connector and a processing module;

[0044] The temperature measurement module is connected to the processing module, and the power supply protection module and the isolation 485 protection module are both connected to the input connector;

[0045] The isolation 485 protection module and the processing module are both connected to the main control board, and the power supply protection module and the input connector are both connected to the power board.

[0046] Optionally, the circuit breaker system further includes an intermediate adapter plate, a shunt release and a micro switch;

[0047] The micro switch is connected to the intermediate adapter plate, and the intermediate adapter plate and the shunt release are both connected to the input connector.

[0048] The embodiment of the utility model obtains the current signal of the circuit to be protected through the power board, the main control module controls the tripping module to control the conduction state of the circuit to be protected according to the current signal, and the clock power supply module continuously provides clock power to the main control module. Therefore, the main control module can monitor the operation of the circuit to be protected in real time according to the current signal, and when the current signal of the circuit to be protected is abnormal, it can immediately control the tripping module to disconnect the circuit to be protected to protect the circuit to be protected. In addition, the clock power supply module can prevent the control module from causing clock disorder due to disconnection from the circuit to be protected, thereby ensuring the stable operation of the circuit breaker system after the circuit to be protected is normally turned on, reducing the maintenance cost of the circuit breaker system. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0050] Figure 1 A schematic diagram of the structure of a circuit breaker system provided by an embodiment of the utility model;

[0051] Figure 2 A schematic diagram of the structure of a clock power supply module provided in an embodiment of the utility model;

[0052] Figure 3 A schematic diagram of the structure of another clock power supply module provided in an embodiment of the utility model;

[0053] Figure 4A schematic diagram of the structure of a main control board provided in an embodiment of the utility model;

[0054] Figure 5 A schematic diagram of the structure of an isolation 485 module provided in an embodiment of the utility model;

[0055] Figure 6 A schematic diagram of the structure of a signal transmission isolation unit provided in an embodiment of the utility model;

[0056] Figure 7 A schematic diagram of the structure of a received signal isolation unit provided in an embodiment of the utility model;

[0057] Figure 8 A schematic diagram of the structure of a transceiver enable signal isolation unit provided in an embodiment of the utility model;

[0058] Fig. 9 A schematic diagram of the structure of a 485 signal processing unit provided in an embodiment of the utility model;

[0059] Fig.10 A schematic structural diagram of another circuit breaker system provided by an embodiment of the utility model;

[0060] Fig.11 A schematic diagram of the structure of a fast saturation power supply module provided in an embodiment of the utility model;

[0061] Fig.12 A schematic diagram of the structure of another fast saturation power supply module provided in an embodiment of the utility model;

[0062] Fig.13 A schematic structural diagram of another circuit breaker system provided in an embodiment of the utility model. DETAILED DESCRIPTION

[0063] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0064] It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the utility model described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0065] Figure 1 A schematic diagram of the structure of a circuit breaker system provided by an embodiment of the utility model is shown in FIG. Figure 1 As shown, the circuit breaker system includes a main control board 10 and a power board 20;

[0066] The main control board includes a trip module, a clock power supply module, a main control module and an isolation 485 module; the power board includes a fast saturation power supply module; the fast saturation power supply module, the trip module, the clock power supply module and the isolation 485 module are all connected to the main control module;

[0067] The fast saturation power supply module is used to obtain the current signal of the line to be protected, the main control module is used to control the tripping module to control the conduction state of the line to be protected according to the current signal, the clock power supply module is used to continuously provide clock power to the main control module, and the isolation 485 module is used to improve the anti-interference and stability of the communication between the main control module and external equipment.

[0068] Among them, the trip module 110 is the execution module of the circuit breaker system, which can control the connection or disconnection of the line to be protected. The main control module 130 is the control center of the circuit breaker system, which can control the trip module 110 to execute the action of disconnecting or connecting the line to be protected. The clock power supply module 120 can provide uninterrupted clock power to the main control module 130, so that the clock of the main control module 130 is not affected by the operating state of the circuit breaker system and operates normally and continuously, thereby improving the stable operation of the circuit breaker system and reducing the maintenance cost of the circuit breaker system. The isolation 485 module is a bridge for the communication between the main control module 130 and the external device, which can improve the anti-interference and stability of the communication between the main control module 130 and the external device, and thus improve the accuracy of the communication between the main control module 130 and the external device. The fast saturation power supply module 250 can obtain the current signal of the line to be protected, so as to feed back the current signal of the line to be protected to the main control module 130 in real time, so that the main control module 130 can monitor the current signal of the line to be protected in real time.

[0069] According to the above connection relationship, the operation process of the circuit breaker system is as follows: the fast saturation power supply module 250 of the power board 20 can obtain the current signal of the line to be protected, and feed back the current signal of the line to be protected to the main control module 130 in real time. The main control module 130 monitors the operation of the line to be protected in real time according to the current signal. If the main control module 130 monitors that the current signal of the line to be protected is normal, it will not control the trip module 110 to perform the action of disconnecting the line to be protected. If the main control module 130 monitors that the current signal of the line to be protected is abnormal, it will immediately control the trip module 110 to perform the action of disconnecting the line to be protected to protect the line to be protected. The main control module 130 can communicate with the external device through the isolation 485 module 250, and can feed back the data of the circuit breaker system operation to the external device, or obtain the operation instruction sent by the external device, so that the main control module 130 controls the trip module 110 to perform the action of disconnecting the line to be protected according to the operation instruction to protect the line to be protected. In addition, the clock power supply module 120 can continuously provide clock power to the main control module 130 to ensure the normal operation of the clock of the main control module 130. Therefore, the main control module 130 will not cause clock disorder due to disconnection from the line to be protected, and the stable operation of the circuit breaker system can be guaranteed after the line to be protected is normally connected.

[0070] The embodiment of the utility model obtains the current signal of the line to be protected through the fast saturation power supply module 250 of the power board 20, and the main control module 130 communicates with the external device through the isolation 485 module 250 to obtain the operation instruction sent by the external device. The main control module 130 controls the trip module 110 to control the conduction state of the line to be protected according to the current signal or the operation instruction, and the clock power supply module 120 continuously provides clock power to the main control module 130. Therefore, the main control module 130 can control the trip module 110 to disconnect the line to be protected according to the operation instruction, or monitor the operation of the line to be protected in real time according to the current signal, and control the trip module 110 to disconnect the line to be protected when the current signal of the line to be protected is abnormal, so as to protect the line to be protected. In addition, the clock power supply module 120 can prevent the control module from causing clock disorder due to the disconnection from the line to be protected, so as to ensure the stable operation of the circuit breaker system after the line to be protected is normally connected, thereby reducing the maintenance cost of the circuit breaker system.

[0071] Based on the above embodiment, optionally, Figure 2 A schematic diagram of the structure of a clock power supply module provided by an embodiment of the utility model. Figure 2As shown, the clock power supply module 120 includes a normal power supply unit 121, a backup power supply unit 122, a backup power collection unit 123 and a competitive power supply unit 124; the backup power collection unit 123 is connected to the backup power supply unit 122, and the backup power collection unit 123 is used to collect the power of the backup power supply 122 unit;

[0072] The backup power supply unit 122 and the normal power supply unit 121 are both connected to the competing power supply unit 124, which is used to control the normal power supply unit 121 to provide clock power when the normal power supply unit 121 exists, and to control the backup power supply unit 122 to provide clock power when the normal power supply unit 121 does not exist; the backup power collection unit 123 and the competing power supply unit 124 are both connected to the main control module 130, which is used to obtain the power and clock power of the backup power supply unit 122.

[0073] Specifically, Figure 3 A schematic diagram of the structure of another clock power supply module provided by an embodiment of the utility model, such as Figure 3 As shown, the normal power supply unit 121 includes a first fixed potential V1; the backup power supply unit 122 includes a button battery B; the backup power collection unit 123 includes an electrostatic protection diode ZD1, a first resistor R1, a second resistor R2, a third resistor R3 and a first capacitor C1; the competitive power supply unit 124 includes a first diode D1, a second diode D2, a fourth resistor R4 and a second capacitor C2;

[0074] The negative electrode of the button battery B, the anode of the electrostatic protection diode ZD1, the first end of the first resistor R1 and the first end of the first capacitor C1 are connected to a common ground; the second end of the first resistor R1 and the first end of the second resistor R2 are both connected to the first end of the third resistor R3; the second end of the first capacitor C1 and the second end of the third resistor R3 are both connected to the main control module 130; the anode of the button battery B, the cathode of the electrostatic protection diode ZD1, the second end of the second resistor R2 and the anode of the first diode D1 are connected; the anode of the second diode D2 is connected to the first fixed potential V1; the cathode of the first diode D1 and the cathode of the second diode D2 are both connected to the first end of the fourth resistor R4; the second end of the fourth resistor R4 and the first end of the second capacitor C2 are both connected to the main control module 130; and the second end of the second capacitor C2 is grounded.

[0075] The voltage of the first fixed potential V1 is 3.3V, the voltage of the button battery B is 3V, and the conduction voltage of the first diode D1 and the second diode D2 is 0.6V.

[0076] Specifically, when the first fixed potential V1 exists on the circuit board, the second diode D2 is turned on, so the cathode voltage of the second diode D2 is 3.3V-0.6V=2.7V, and the voltage difference between the anode and cathode of the first diode D1 is 0.3V, so the button battery B does not output current at this time; when the first fixed potential V1 does not exist, the first diode D1 is turned on, and the button battery B provides clock power for the main control module 130. The fourth resistor R4 and the second capacitor C2 constitute a low-pass filter, which can make the quality of the clock power provided to the main control module 130 better. The electrostatic protection diode ZD1 can provide electrostatic protection to prevent the high voltage input from burning the subsequent circuit. The first resistor R1 and the second resistor R2 are both voltage divider resistors. The main control module 130 calculates the remaining power of the button battery B by collecting the voltage of the first resistor R1, so that the button battery B can be replaced in time when the button battery B is low on power. The third resistor R3 and the first capacitor C1 constitute a low-pass filter, so that the main control module 130 collects the voltage of the first resistor R1 more accurately.

[0077] This solution uses a resistor voltage division method to detect the remaining power of the button battery B. The technology is simple and the technical cost is low, which can reduce the manufacturing cost of the circuit breaker system.

[0078] Based on the above embodiment, optionally, Figure 4 The schematic diagram of the structure of a main control board provided by the embodiment of the utility model is shown in FIG. Figure 4 As shown, the main control board 10 also includes an LCD screen 140, a temperature and humidity sensor 150, a button 160, a storage module 170, an indicator light 190 and an isolated serial port 200; the LCD screen 140, the temperature and humidity sensor 150, the button 160, the storage module 170, the isolation 485 module 180, the indicator light 190 and the isolation serial port 200 are all connected to the main control module 130.

[0079] Among them, the LCD screen 140 is used to display the operating parameters of the circuit breaker system. The temperature and humidity sensor 150 is used to detect the temperature and humidity of the environment in which the circuit breaker system is located. The button 160 is used to set the operating parameters of the LCD screen 140 page and select the LCD screen 140 page display function. The storage module 170 includes a flash memory that can store data such as circuit breaker faults, power, and alarms. The isolation 485 module 180 is a communication module based on the RS-485 standard, which can isolate the signal and power supply through photoelectric isolation technology, thereby avoiding the formation of a current loop. The indicator light 190 is used to indicate the operating status of the circuit breaker system. The isolation serial port 200 is a window for the main control module 130 to communicate with other devices or modules via serial ports.

[0080] Based on the above embodiment, optionally, Figure 5 This is a schematic diagram of the structure of an isolation 485 module provided by an embodiment of the utility model. Figure 5 As shown, the isolation 485 module 180 includes a transceiver enable signal isolation unit 181, a transmission signal isolation unit 182, a reception signal isolation unit 183 and a 485 signal processing unit 184;

[0081] The main control module 130 is connected to the 485 signal processing unit 184 through the transceiver enable signal isolation unit 181 , the transmission signal isolation unit 182 and the reception signal isolation unit 183 , and the 485 signal processing unit 184 is connected to the external device 01 .

[0082] Specifically, Figure 6 A schematic diagram of the structure of a signal isolation unit provided by an embodiment of the utility model. Figure 6 As shown, the transmission signal isolation unit 182 includes a fifth resistor R5, a first optical coupler U1, a sixth resistor R6, a seventh resistor R7, a third capacitor C3, an eighth resistor R8 and a first transistor Q1;

[0083] The first end of the fifth resistor R5 is connected to the main control module 130, the first end of the first optocoupler U1 is connected to the second fixed potential V2, the second end of the fifth resistor R5 is connected to the second end of the first optocoupler U1, the third end of the first optocoupler U1 and the first end of the sixth resistor R6 are both connected to the third fixed potential V3, the fourth end of the first optocoupler U1, the first end of the seventh resistor R7 and the first end of the third capacitor C3 are all connected to the first end of the eighth resistor R8, the second end of the sixth resistor R6 and the first end of the first transistor Q1 are both connected to the 485 signal processing unit 184, the second end of the seventh resistor R7 and the second end of the third capacitor C3 are both connected to the control end of the first transistor Q1, the second end of the first transistor Q1 is grounded, and the second end of the eighth resistor R8 is grounded.

[0084] Among them, the fifth resistor R5 is a current limiting resistor, which can limit the magnitude of the current input to the first optical coupler U1 to prevent the first optical coupler U1 from being burned due to excessive input current. The seventh resistor R7 is a current limiting resistor, which can limit the current input to the first transistor Q1. The eighth resistor R8 is a pull-down resistor, which can lower the base potential of the first transistor Q1 when the first transistor Q1 is turned off. The sixth resistor R6 is a pull-up resistor, which can raise the collector potential of the first transistor Q1 when the first transistor Q1 is turned off. The third capacitor C3 can turn on the first transistor Q1 at the moment when the current of the first optical coupler U1 is transformed, which speeds up the opening of the first transistor Q1, thereby increasing the baud rate of communication.

[0085] Specifically, when the control module sends data, it drives the first optical coupler U1, so that the output end of the first optical coupler U1 drives the first transistor Q1, thereby realizing serial port signal isolation. In addition, in order to increase the communication rate, at the moment when the first optical coupler U1 is turned on, the third capacitor C3 can be approximately regarded as a short circuit, and the base voltage of the first transistor Q1 can be instantly raised, thereby turning on the first transistor Q1.

[0086] Specifically, Figure 7 A schematic diagram of the structure of a received signal isolation unit provided in an embodiment of the utility model. Figure 7 As shown, the received signal isolation unit 183 includes a ninth resistor R9, a second transistor Q2, a tenth resistor R10, a fourth capacitor C4, a second optical coupler U2, an eleventh resistor R11 and a twelfth resistor R12;

[0087] The first end of the ninth resistor R9 and the first end of the second transistor Q2 are both connected to the main control module 130, the second end of the ninth resistor R9 and the first end of the second optocoupler U2 are both connected to the fourth fixed potential V4, the control end of the second transistor Q2 and the first end of the tenth resistor R10 are both connected to the first end of the fourth capacitor C4, the second end of the tenth resistor R10, the second end of the fourth capacitor C4 and the first end of the eleventh resistor R11 are all connected to the second end of the second optocoupler U2, the second end of the second transistor Q2 is grounded, the second end of the eleventh resistor R11 is grounded, the third end of the second optocoupler U2 is connected to the fifth fixed potential V5, the fourth end of the second optocoupler U2 is connected to the first end of the twelfth resistor R12, and the second end of the twelfth resistor R12 is connected to the 485 signal processing unit 184.

[0088] Among them, the twelfth resistor R12 is a current limiting resistor, which can limit the magnitude of the current input to the second optical coupler U2 to prevent the second optical coupler U2 from being burned due to excessive input current. The tenth resistor R10 is a current limiting resistor, which can limit the current input to the second transistor Q2. The eleventh resistor R11 is a pull-down resistor, which can lower the base potential of the second transistor Q2 when the second transistor Q2 is turned off. The ninth resistor R9 is a pull-up resistor, which can raise the potential of the collector of the second transistor Q2 when the second transistor Q2 is turned off. The fourth capacitor C4 can turn on the second transistor Q2 at the moment when the current of the second optical coupler U2 is transformed, which speeds up the opening of the second transistor Q2, thereby increasing the baud rate of communication.

[0089] Specifically, when the 485 signal processing unit 184 sends data, it will drive the second optical coupler U2, so that the output end of the second optical coupler U2 drives the second transistor Q2, thereby realizing serial port signal isolation. In addition, in order to increase the communication rate, at the moment when the second optical coupler U2 is turned on, the fourth capacitor C4 can be approximately regarded as a short circuit, and the base voltage of the second transistor Q2 can be instantly raised, thereby turning on the second transistor Q2.

[0090] Specifically, Figure 8 A schematic diagram of the structure of a transceiver enable signal isolation unit provided in an embodiment of the utility model. Figure 8 As shown, the transceiver enable signal isolation unit 181 includes: a thirteenth resistor R13, a third optical coupler U3, a fourteenth resistor R14, a fifteenth resistor R15, a fifth capacitor C5, a third transistor Q3 and a sixteenth resistor R16;

[0091] The first end of the thirteenth resistor R13 is connected to the main control module, the second end of the thirteenth resistor R13 is connected to the first end of the third optocoupler U3, the second end of the third optocoupler U3 is grounded, the third end of the third optocoupler U3, the first end of the fourteenth resistor R14 and the first end of the fifteenth resistor R15 are all connected to the first end of the fifth capacitor C5, the second end of the fourteenth resistor R14 and the first end of the third triode Q3 are both connected to the sixth fixed potential V6, the second end of the fifteenth resistor R15 and the second end of the fifth capacitor C5 are both connected to the control end of the third triode Q3, the second end of the third triode Q3 and the first end of the sixteenth resistor R16 are both connected to the 485 signal processing unit 184, and the second end of the sixteenth resistor R16 is grounded.

[0092] Among them, the thirteenth resistor R13 is a current limiting resistor, which can limit the magnitude of the current input to the third optical coupler U3 to prevent the third optical coupler U3 from being burned due to excessive input current. The fifteenth resistor R15 is a current limiting resistor, which can limit the current input to the third transistor Q3. The sixteenth resistor R16 is a pull-down resistor, which can lower the base potential of the third transistor Q3 when the third transistor Q3 is turned off. The fourteenth resistor R14 is a pull-up resistor, which can raise the collector potential of the third transistor Q3 when the third transistor Q3 is turned off. The fifth capacitor C5 can turn on the third transistor Q3 at the moment when the current of the third optical coupler U3 is transformed, which speeds up the opening of the third transistor Q3, thereby increasing the baud rate of communication.

[0093] Specifically, when the main control module 130 sends data, it drives the third optical coupler U3, so that the output end of the third optical coupler U3 drives the third transistor Q3, thereby realizing serial port signal isolation. In addition, in order to increase the communication rate, at the moment when the third optical coupler U3 is turned on, the fifth capacitor C5 can be approximately regarded as a short circuit, and the base voltage of the third transistor Q3 can be instantly raised, thereby turning on the third transistor Q3.

[0094] Specifically, Fig. 9 The structure diagram of a 485 signal processing unit provided by the embodiment of the utility model is shown in FIG. Fig. 9As shown, the 485 signal processing unit 184 includes a 485 signal processing chip U4, a sixth capacitor C6, a seventh capacitor C7, a seventeenth resistor R17, an eighteenth resistor R18, an eighth capacitor C8 and a ninth capacitor C9;

[0095] The transceiver enable signal isolation unit 181 is connected to the first end of the 485 signal processing chip U4, the sending signal isolation unit 182 is connected to the second end of the 485 signal processing chip U4, the receiving signal isolation unit 183 is connected to the third end of the 485 signal processing chip U4, the first end of the sixth capacitor C6 and the first end of the seventh capacitor C7 are connected to a common ground, the second end of the sixth capacitor C6, the second end of the seventh capacitor C7 and the fourth end of the 485 signal processing chip U4 are all connected to the seventh fixed potential V7, the fifth end of the 485 signal processing chip U4, the first end of the seventeenth resistor R17 and the first end of the eighth capacitor C8 are all connected to the external device 01, the second end of the eighth capacitor C8 is grounded, the sixth end of the 485 signal processing chip U4, the first end of the eighteenth resistor R18 and the first end of the ninth capacitor C9 are all connected to the external device 01, the second end of the eighteenth resistor R18 is connected to the eighth fixed potential V8, the second end of the seventeenth resistor R17 and the second end of the ninth capacitor C9 are connected to a common ground, and the seventh end of the 485 signal processing chip U4 is grounded.

[0096] The 485 signal processing chip U4 can convert the 485 differential signal into a TTL signal. The sixth capacitor C6, the seventh capacitor C7, the eighth capacitor C8 and the ninth capacitor C9 are all filter capacitors, the eighteenth resistor R18 is a pull-up resistor, and the seventeenth resistor R17 is a pull-down resistor.

[0097] Based on the above embodiment, optionally, Fig.10 A schematic diagram of the structure of another circuit breaker system provided by an embodiment of the utility model. Fig.10 As shown, the circuit breaker system further includes a voltage sampling board 30; the power board 20 further includes a metering module 210, a signal conditioning module 220, a power failure detection module 230 and a voltage stabilization module 240;

[0098] The metering module 210, the signal conditioning module 220 and the power-off detection module 230 are all connected to the main control module 130, the line transformer 02 to be protected and the voltage sampling board 30 are all connected to the metering module 210, the fast saturation power supply module 250 is connected to the line transformer 02 to be protected, the fast saturation power supply module 250 is connected to the signal conditioning module 220, and the power-off detection module 230 and the fast saturation power supply module 250 are all connected to the voltage stabilization module 240.

[0099] Among them, the voltage sampling board 30 is used to collect the voltage signal of the line to be protected. The fast saturation power supply module 250 is used to output direct current and collect the current signal of the line to be protected. The metering module 210 is used to measure the amount of electricity flowing through the line to be protected according to the voltage signal and current signal of the line to be protected. The signal conditioning module 220 is used to convert the current signal collected by the fast saturation power supply module 250 into a voltage within the readable range of the main control module 130. The power-off detection module 230 is used to detect whether the DC power supply is powered by the fast saturation power supply module 250 or the external auxiliary power supply, and when the fast saturation power supply module 250 is powered, the control module stores the existing data in the storage module 170 (for example, a flash memory), and when the external auxiliary power supply is powered, the main control module 130 reads the data stored in the storage module 170 to restore all data states. The voltage stabilization module 240 is used to convert the input voltage into a voltage of a set size (for example, a 12V voltage or a 3.3V voltage).

[0100] Based on the above embodiment, optionally, Fig.11 The schematic diagram of the structure of a fast saturation power supply module provided by the embodiment of the utility model. Fig.11 As shown, the fast saturation power supply module 250 includes a rectifier unit 251, a current sampling unit 252 and a power supply control unit 253;

[0101] The rectifier unit 251 is connected to the line transformer 02 to be protected, and the current sampling unit 252 and the power supply control unit 253 are both connected to the rectifier unit 251 .

[0102] The rectifier unit 251 is used to rectify the AC power output by the protection line transformer into DC power. The current sampling unit 252 is used to collect the current signal of the line to be protected. The power supply control unit 253 is used to control the supply of DC power to the subsequent circuit.

[0103] Specifically, optionally, Fig.12 This is a schematic diagram of the structure of another fast saturation power supply module provided by the embodiment of the utility model. Fig.12 As shown, the rectifier unit 251 includes a first rectifier bridge A1, a second rectifier bridge A2 and a third rectifier bridge A3;

[0104] The current sampling unit 252 includes a nineteenth resistor R19, a twentieth resistor R20, and a twenty-first resistor R21;

[0105] The power supply control unit 253 includes a transient suppression diode TVS, an inductor L, a third diode D3, a transistor T, a twenty-second resistor R22, a twenty-third resistor R23, a tenth capacitor C10, an eleventh capacitor C11, a twenty-fourth resistor C24, a twenty-fifth resistor C25, a twenty-sixth resistor C26, a twelfth capacitor C12 and a comparator C;

[0106] The first end and the second end of the first rectifier bridge A1, the first end and the second end of the second rectifier bridge A2, and the first end and the second end of the third rectifier bridge A3 are all connected to the line transformer 02 to be protected, the third end of the first rectifier bridge A1 is connected to the first end of the nineteenth resistor R19, the second end of the nineteenth resistor R19 is grounded, the third end of the second rectifier bridge A2 is connected to the first end of the twentieth resistor R20, the second end of the twentieth resistor R20 is grounded, the third end of the third rectifier bridge A3 is connected to the first end of the twenty-first resistor R21, and the second end of the twenty-first resistor R21 is grounded;

[0107] The fourth end of the first rectifier bridge A1, the fourth end of the second rectifier bridge A2, the fourth end of the third rectifier bridge A3, the first end of the transient suppression diode TVS, and the first end of the inductor L are all connected to the first end of the transistor T, the second end of the transient suppression diode TVS is grounded, the second end of the inductor L is connected to the anode of the third diode D3, the cathode of the third diode D3, the first end of the twenty-second resistor R22, the first end of the tenth capacitor C10, and the first end of the eleventh capacitor C11 are all connected to the first end of the twenty-fourth resistor R24, the control end of the transistor T and the second end of the twenty-second resistor R22 are all connected to the first end of the twenty-third resistor R23, and the second end of the transistor T, the second end of the twenty-third resistor R23, the second end of the tenth capacitor C10, and the second end of the eleventh capacitor C11 are commonly grounded;

[0108] The second end of the twenty-fourth resistor R24, the first end of the twenty-fifth resistor R25, the positive input end of the comparator C and the first end of the twelfth capacitor C12 are all connected to the first end of the twenty-sixth resistor R26, the second end of the twelfth capacitor C12 and the twenty-fifth resistor R25 are grounded, the negative input end of the comparator C is connected to the base potential, the power supply end of the comparator C is connected to the ninth fixed potential V9, the ground end of the comparator C is grounded, and the output end of the comparator C and the second end of the twenty-sixth resistor R26 are all connected to the control end of the transistor T.

[0109] Among them, the protection line transformer outputs AC power after being rectified by the first rectifier bridge A1, the second rectifier bridge A2 and the third rectifier bridge A3 to output DC power. At this time, negative voltage appears on the 19th resistor R19, the 20th resistor R20 and the 21st resistor R21, and current collection is performed. After rectification, the voltage rises after the current flows through the subsequent load. Before the comparator C works, the circuit voltage is low. The 22nd resistor R22 and the 23rd resistor R23 divide the voltage and connect the gate of the transistor T. Before the turn-on voltage of the gate of the transistor T is reached, the transistor T is turned off, and the first rectifier bridge A1, the second rectifier bridge A2 and the third rectifier bridge A3 output DC power after rectification to supply power to the subsequent load. As the voltage of the DC power output after rectification by the first rectifier bridge A1, the second rectifier bridge A2 and the third rectifier bridge A3 continues to rise, the comparator C starts to work, and the divided voltage of the 24th resistor R24 ​​and the 25th resistor R25 is used as the positive input voltage of the comparator C and compared with the threshold voltage. When the voltage of the positive input terminal of comparator C does not exceed the threshold voltage, comparator C outputs a low voltage, transistor T is turned off, and the voltage of the DC output after rectification by the first rectifier bridge A1, the second rectifier bridge A2, and the third rectifier bridge A3 continues to rise. When the voltage of the positive input terminal of comparator C exceeds the threshold voltage, comparator C outputs a high voltage, at which time the gate of transistor T is at a high level, transistor T is turned on, and the DC output after rectification by the first rectifier bridge A1, the second rectifier bridge A2, and the third rectifier bridge A3 is grounded through transistor T. At this time, the third diode D3 is cut off. Since there is a load in the subsequent stage, the subsequent load cannot replenish electrical energy, which will cause the voltage to gradually decrease. When the voltage of the positive input terminal of comparator C is lower than the threshold voltage, transistor T is turned off, and the DC output after rectification by the first rectifier bridge A1, the second rectifier bridge A2, and the third rectifier bridge A3 supplies power to the subsequent load.

[0110] Based on the above embodiment, optionally, Fig.13 A schematic diagram of the structure of another circuit breaker system provided by an embodiment of the utility model. Fig.13 As shown, the circuit breaker system further includes a connection plate 40;

[0111] The connecting board 40 includes a power supply protection module 410, an isolation 485 protection module 420, a temperature measurement module 430, an input connector 440 and a processing module 450; the temperature measurement module 430 is connected to the processing module 450, and the power supply protection module 410 and the isolation 485 protection module 420 are both connected to the input connector 440; the isolation 485 protection module 420 and the processing module 450 are both connected to the main control board 10, and the power supply protection module 410 and the input connector 440 are both connected to the power board 20.

[0112] Specifically, the power supply protection module 410 is connected to the fast saturation power supply module 250 to provide protection for the fast saturation power supply module 250. The isolation 485 protection module 420 is connected to the isolation 485 module 180 to provide protection for the isolation 485 module 180. The input connector 440 is connected to the voltage stabilizing module 240 to connect the voltage stabilizing module 240 to an external auxiliary power supply to provide auxiliary power to the voltage stabilizing module 240. The processing module 450 is connected to the isolation serial port 200 to realize communication between the main control module 130 and the processing module 450. The temperature measurement module 430 is used to detect the temperature of the input and output lines of the busbar of the line to be protected.

[0113] Optionally, continue to refer to Fig.13 The circuit breaker system further includes an intermediate adapter board 50 , a shunt release 60 and a micro switch 70 ; the micro switch 70 is connected to the intermediate adapter board 50 , and both the intermediate adapter board 50 and the shunt release 60 are connected to the input connector 440 .

[0114] The micro switch 70 or the user can control the shunt release 60 through the input connector 440 to control the circuit breaker system to disconnect the input and output lines of the busbar to be protected.

[0115] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be performed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0116] The above specific implementations do not constitute a limitation on the protection scope of the present utility model. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A circuit breaker system, characterized in that: Including main control board and power board; The main control board includes a trip module, a clock power supply module, a main control module and an isolation 485 module; The power board includes a fast saturation power supply module; The fast saturation power supply module, the trip module, the clock power supply module and the isolation 485 module are all connected to the main control module; The fast saturation power supply module is used to obtain the current signal of the line to be protected, the main control module is used to control the tripping module to control the conduction state of the line to be protected according to the current signal, the clock power supply module is used to continuously provide clock power to the main control module, and the isolation 485 module is used to improve the anti-interference and stability of the communication between the main control module and external equipment.

2. The circuit breaker system according to claim 1, characterized in that: The clock power supply module includes a normal power supply unit, a backup power supply unit, a backup power collection unit and a competitive power supply unit; The standby power collection unit is connected to the standby power supply unit, and the standby power collection unit is used to collect the power of the standby power supply unit; The backup power supply unit and the normal power supply unit are both connected to the competition power supply unit, and the competition power supply unit is used to control the normal power supply unit to provide the clock power when the normal power supply unit exists, and to control the backup power supply unit to provide the clock power when the normal power supply unit does not exist; The backup power collection unit and the competitive power supply unit are both connected to the main control module, and the main control module is used to obtain the power of the backup power supply unit and the clock power.

3. The circuit breaker system according to claim 2, characterized in that: The normal power supply unit includes a first fixed potential; The backup power supply unit includes a button battery; The standby power collection unit includes an electrostatic protection diode, a first resistor, a second resistor, a third resistor and a first capacitor; The competitive power supply unit includes a first diode, a second diode, a fourth resistor and a second capacitor; The negative electrode of the button battery, the anode of the electrostatic protection diode, the first end of the first resistor and the first end of the first capacitor are connected to a common ground; the second end of the first resistor and the first end of the second resistor are both connected to the first end of the third resistor; the second end of the first capacitor and the second end of the third resistor are both connected to the main control module; the anode of the button battery, the cathode of the electrostatic protection diode, the second end of the second resistor and the anode of the first diode are connected; the anode of the second diode is connected to the first fixed potential; the cathode of the first diode and the cathode of the second diode are both connected to the first end of the fourth resistor; the second end of the fourth resistor and the first end of the second capacitor are both connected to the main control module; and the second end of the second capacitor is grounded.

4. The circuit breaker system according to claim 1, characterized in that: The isolation 485 module includes a transceiver enable signal isolation unit, a transmission signal isolation unit, a reception signal isolation unit and a 485 signal processing unit; The main control module is connected to the 485 signal processing unit through the transceiver enable signal isolation unit, the transmission signal isolation unit and the reception signal isolation unit respectively, and the 485 signal processing unit is connected to an external device.

5. The circuit breaker system according to claim 4, characterized in that: The transmission signal isolation unit includes a fifth resistor, a first optical coupler, a sixth resistor, a seventh resistor, a third capacitor, an eighth resistor and a first transistor; The first end of the fifth resistor is connected to the main control module, the first end of the first optocoupler is connected to the second fixed potential, the second end of the fifth resistor is connected to the second end of the first optocoupler, the third end of the first optocoupler and the first end of the sixth resistor are both connected to the third fixed potential, the fourth end of the first optocoupler, the first end of the seventh resistor and the first end of the third capacitor are all connected to the first end of the eighth resistor, the second end of the sixth resistor and the first end of the first transistor are both connected to the 485 signal processing unit, the second end of the seventh resistor and the second end of the third capacitor are both connected to the control end of the first transistor, the second end of the first transistor is grounded, and the second end of the eighth resistor is grounded.

6. The circuit breaker system according to claim 4, characterized in that: The received signal isolation unit includes a ninth resistor, a second transistor, a tenth resistor, a fourth capacitor, a second optical coupler, an eleventh resistor and a twelfth resistor; The first end of the ninth resistor and the first end of the second transistor are both connected to the main control module, the second end of the ninth resistor and the first end of the second optocoupler are both connected to the fourth fixed potential, the control end of the second transistor and the first end of the tenth resistor are both connected to the first end of the fourth capacitor, the second end of the tenth resistor, the second end of the fourth capacitor and the first end of the eleventh resistor are all connected to the second end of the second optocoupler, the second end of the second transistor is grounded, the second end of the eleventh resistor is grounded, the third end of the second optocoupler is connected to the fifth fixed potential end, the fourth end of the second optocoupler is connected to the first end of the twelfth resistor, and the second end of the twelfth resistor is connected to the 485 signal processing unit.

7. The circuit breaker system according to claim 4, characterized in that: The transceiver enable signal isolation unit includes: a thirteenth resistor, a third optical coupler, a fourteenth resistor, a fifteenth resistor, a fifth capacitor, a third transistor and a sixteenth resistor; The first end of the thirteenth resistor is connected to the main control module, the second end of the thirteenth resistor is connected to the first end of the third optocoupler, the second end of the third optocoupler is grounded, the third end of the third optocoupler, the first end of the fourteenth resistor and the first end of the fifteenth resistor are all connected to the first end of the fifth capacitor, the second end of the fourteenth resistor and the first end of the third triode are both connected to the sixth fixed potential, the second end of the fifteenth resistor and the second end of the fifth capacitor are both connected to the control end of the third triode, the second end of the third triode and the first end of the sixteenth resistor are both connected to the 485 signal processing unit, and the second end of the sixteenth resistor is grounded.

8. The circuit breaker system according to claim 4, characterized in that: The 485 signal processing unit includes a 485 signal processing chip, a sixth capacitor, a seventh capacitor, a seventeenth resistor, an eighteenth resistor, an eighth capacitor and a ninth capacitor; The transceiver enable signal isolation unit is connected to the first end of the 485 signal processing chip, the transmission signal isolation unit is connected to the second end of the 485 signal processing chip, and the reception signal isolation unit is connected to the third end of the 485 signal processing chip; The first end of the sixth capacitor and the first end of the seventh capacitor are connected to a common ground, the second end of the sixth capacitor, the second end of the seventh capacitor and the fourth end of the 485 signal processing chip are all connected to the seventh fixed potential, the fifth end of the 485 signal processing chip, the first end of the seventeenth resistor and the first end of the eighth capacitor are all connected to the external device, the second end of the eighth capacitor is connected to the ground, the sixth end of the 485 signal processing chip, the first end of the eighteenth resistor and the first end of the ninth capacitor are all connected to the external device, the second end of the eighteenth resistor is connected to the eighth fixed potential, the second end of the seventeenth resistor and the second end of the ninth capacitor are connected to a common ground, and the seventh end of the 485 signal processing chip is grounded.

9. The circuit breaker system according to claim 1, characterized in that: The main control board also includes a liquid crystal screen, a temperature and humidity sensor, a button, a storage module, an indicator light and an isolated serial port; The liquid crystal screen, the temperature and humidity sensor, the button, the storage module, the indicator light and the isolated serial port are all connected to the main control module.

10. The circuit breaker system according to claim 1, characterized in that Also included is a voltage sampling board; The power board also includes a metering module, a signal conditioning module, a power failure detection module and a voltage stabilization module; The metering module, the signal conditioning module and the power-off detection module are all connected to the main control module, the line transformer to be protected and the voltage sampling board are all connected to the metering module, the fast saturation power supply module is connected to the line transformer to be protected, the fast saturation power supply module is connected to the signal conditioning module, and the power-off detection module and the fast saturation power supply module are all connected to the voltage stabilizing module.

11. The circuit breaker system according to claim 10, characterized in that: The fast saturation power supply module includes a rectifier unit, a current sampling unit and a power supply control unit; The rectifier unit is connected to the line transformer to be protected, and the current sampling unit and the power supply control unit are both connected to the rectifier unit.

12. The circuit breaker system according to claim 11, characterized in that The rectifier unit includes a first rectifier bridge, a second rectifier bridge and a third rectifier bridge; The current sampling unit includes a nineteenth resistor, a twentieth resistor and a twenty-first resistor; The power supply control unit includes a transient suppression diode, an inductor, a third diode, a transistor, a twenty-second resistor, a twenty-third resistor, a tenth capacitor, an eleventh capacitor, a twenty-fourth resistor, a twenty-fifth resistor, a twenty-sixth resistor, a twelfth capacitor and a comparator; The first end and the second end of the first rectifier bridge, the first end and the second end of the second rectifier bridge, and the first end and the second end of the third rectifier bridge are all connected to the line transformer to be protected, the third end of the first rectifier bridge is connected to the first end of the nineteenth resistor, the second end of the nineteenth resistor is grounded, the third end of the second rectifier bridge is connected to the first end of the twentieth resistor, the second end of the twentieth resistor is grounded, the third end of the third rectifier bridge is connected to the first end of the twenty-first resistor, and the second end of the twenty-first resistor is grounded; The fourth end of the first rectifier bridge, the fourth end of the second rectifier bridge, the fourth end of the third rectifier bridge, the first end of the transient suppression diode, and the first end of the inductor are all connected to the first end of the transistor, the second end of the transient suppression diode is grounded, the second end of the inductor is connected to the anode of the third diode, the cathode of the third diode, the first end of the twenty-second resistor, the first end of the tenth capacitor, and the first end of the eleventh capacitor are all connected to the first end of the twenty-fourth resistor, the control end of the transistor and the second end of the twenty-second resistor are all connected to the first end of the twenty-third resistor, and the second end of the transistor, the second end of the twenty-third resistor, the second end of the tenth capacitor, and the second end of the eleventh capacitor are commonly grounded; The second end of the twenty-fourth resistor, the first end of the twenty-fifth resistor, the positive input end of the comparator and the first end of the twelfth capacitor are all connected to the first end of the twenty-sixth resistor, the second end of the twelfth capacitor and the twenty-fifth resistor are grounded to a common ground, the negative input end of the comparator is connected to a basic potential, the power supply end of the comparator is connected to a ninth fixed potential, the ground end of the comparator is grounded, and the output end of the comparator and the second end of the twenty-sixth resistor are both connected to the control end of the transistor.

13. The circuit breaker system according to claim 1, characterized in that Also included is a connection plate; The connection board includes a power supply protection module, an isolation 485 protection module, a temperature measurement module, an input connector and a processing module; The temperature measurement module is connected to the processing module, and the power supply protection module and the isolation 485 protection module are both connected to the input connector; The isolation 485 protection module and the processing module are both connected to the main control board, and the power supply protection module and the input connector are both connected to the power board.

14. The circuit breaker system according to claim 13, characterized in that It also includes an intermediate adapter plate, a shunt release and a micro switch; The micro switch is connected to the intermediate adapter plate, and the intermediate adapter plate and the shunt release are both connected to the input connector.

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