Modular circuit breaker, self-checking method and storage medium thereof

Abstract

The invention relates to the field of circuit breakers, in particular to a modular circuit breaker, a self-checking method and a storage medium thereof.The modular circuit breaker comprises a shell, a plurality of mounting grooves are formed in the shell, functional modules are inserted into the mounting grooves, and insulating grooves are formed in the inner walls of the mounting grooves; the inner walls of the insulating groove and the mounting groove are covered with insulating flexible layers, the functional module is continuously inserted into the insulating groove after being inserted into the mounting groove, the insulating flexible layers are used for being attached to and insulated from the functional module, the inner wall of the insulating groove is provided with an electric connection assembly used for being electrically connected with the functional module, and the electric connection assembly is used for being electrically connected with the functional module. And a clamping structure clamped with the inner wall of the mounting groove is arranged on the functional module. The circuit breaker has the effect of facilitating replacement and maintenance of the circuit breaker.

Description

Technical Field

[0001] The present application relates to the field of circuit breakers, and in particular to a modular circuit breaker, a self-test method and a storage medium thereof. Background Art

[0002] Circuit breakers are widely used in power transmission and distribution networks to protect circuits, but traditional circuit breakers are mostly integrated designs, that is, the shells are mostly integrated injection molding. At this time, when a functional module fails, it is often necessary to remove the entire circuit breaker for repair or replacement.

[0003] Although this type of integrated circuit breaker can ensure the safe and stable operation of the circuit to a certain extent, it also has problems such as high maintenance cost and long downtime, which puts great pressure on the operation of the power grid. In actual use, once a part is damaged, the entire device needs to be replaced, which not only consumes huge resources but also seriously affects the maintenance of normal production and living order. Summary of the invention

[0004] In order to improve the problems of high maintenance cost and long downtime of circuit breakers, the present application provides a modular circuit breaker, a self-test method and a storage medium thereof.

[0005] The present application provides a modular circuit breaker, which adopts the following technical solution: A modular circuit breaker comprises a shell, wherein a plurality of mounting grooves are provided on the shell, a functional module is inserted into the mounting groove, an insulating groove is provided on the inner wall of the mounting groove, the insulating groove and the inner wall of the mounting groove are both covered with an insulating flexible layer, the functional module is inserted into the mounting groove and then further inserted into the insulating groove, the insulating flexible layer is used to fit and insulate with the functional module, an electrical connection component for electrically connecting to the functional module is provided on the inner wall of the insulating groove, and a clamping structure for clamping with the inner wall of the mounting groove is provided on the functional module.

[0006] By adopting the above technical solution, when a module of the circuit breaker is damaged, resulting in damage to a certain function, it can be repaired by directly replacing the functional module, thereby improving the maintenance efficiency and being convenient and quick.

[0007] Optionally, an inner groove and an outer groove are provided on the inner wall of the insulating groove, and the opening surface of the outer groove is circumferentially surrounding the outer ring of the opening surface of the inner groove. The electrical connection component includes a conductive core arranged in the inner groove and an insulating shell slidably arranged in the outer groove, and the insulating shell surrounds the conductive core to achieve insulation from the outside. A conductive terminal is embedded through the insulating shell, and the conductive terminal is used for contacting and electrically connecting with the conductive core, and the conductive terminal is used for contacting and electrically connecting with the conductive end on the functional module.

[0008] By adopting the above technical solution, when no functional module is inserted, the conductive core is insulated and protected by the insulating shell. After the functional module is inserted to a specified depth, the insulating shell electrically connects the conductive core to the functional module through the conductive terminal, which is convenient and fast and improves safety.

[0009] Optionally, the conductive core is slidably arranged in the inner groove, and a protective elastic part is arranged between the bottom wall of the inner groove and the conductive core, and the protective elastic part is extended and retracted in the direction of pushing the conductive core out of the inner groove. The electrical connection component includes a conductive rod embedded in the inner wall of the insulating groove, and the conductive rod is used to electrically connect with the conductive core. The conductive core slides in a direction approaching or moving away from the conductive rod to separate, and the conductive rod is electrically connected to the conductive rod in the adjacent installation groove to realize electrical connection between multiple functional modules.

[0010] By adopting the above technical solution, the conductive cores in different installation slots are electrically connected by conducting rods to achieve electrical connection of adjacent circuits, so that different functional modules can be connected in series, thereby achieving series protection of overload protection, overcurrent protection, and overvoltage protection.

[0011] Optionally, at least two conductive cores are arranged in one insulating groove, and the two conductive cores are used for inputting electricity and outputting electricity respectively. A plurality of trigger conductive rods are arranged on the inner wall of the insulating groove, and two ends of the trigger conductive rods are respectively electrically connected to the conductive core and the conduction conductive rod. Adjacent trigger conductive rods in the same insulating groove are electrically connected. A disconnecting groove is provided on the conductive core, and the disconnecting groove is used to correspond to the triggering conductive rod as the conductive core slides, so that the triggering conductive rod and the conductive core are released from contact.

[0012] By adopting the above technical scheme, even if no functional module is inserted, the conductive core in the same insulating slot can conduct the circuit by triggering the conductive rod, so that the conductive core that receives power and the conductive core that outputs power are directly connected in series, and the series circuit can also be conducted, instead of being unable to conduct in series due to the lack of a functional module. At the same time, the functional module can also be replaced while the circuit is conducting, reducing the impact on the equipment at work; and when the functional module is inserted into the specified position, the conductive core is pushed to slide, so that the disconnecting slot corresponds to the position of the triggering conductive rod. At this time, the contact between the triggering conductive rod and the conductive core is released, so that the current of the conductive core enters the functional module, thereby connecting the functional module in series into the circuit and releasing the direct series connection between the two conductive cores.

[0013] Optionally, a linkage groove for the trigger conductive rod to slide therein is further provided on the inner wall of the insulating groove, and a commutation groove is further provided between the linkage groove and the outer groove, a commutation block is slidably arranged in the commutation groove, a first inclined surface is provided on the commutation block, the first inclined surface is used for the insulating shell to abut against so as to push the commutation block into the linkage groove, and a second inclined surface is provided on the trigger conductive rod, the second inclined surface is used for the commutation block to abut against so as to push the trigger conductive rod out of the linkage groove and electrically connect to the conductive core; a segmented trigger groove is provided on the insulating shell, a segmented trigger rod is slidably arranged in the segmented trigger groove, and the segmented trigger rod extends to the segmented trigger groove of an adjacent insulating shell and slides, so that the insulating shell slides a certain distance and then drives the insulating shell in the adjacent insulating groove to slide.

[0014] By adopting the above technical solution, when a functional module is inserted, the conductive cores in other adjacent insulating slots are driven to be connected in series to the circuit through the segmented trigger rod, thereby realizing series conduction of the circuit without installing all the functional modules. At the same time, when one of the functional modules is damaged, the user can first insert a good functional module and then pull out the damaged functional module to realize live maintenance.

[0015] The present application provides a modular circuit breaker self-test method, which adopts the following technical solution: A modular circuit breaker self-test method, comprising: Obtain arc extinguishing chamber temperature data and time data; Determine temperature rise rate data and arc extinguishing time data through the arc extinguishing chamber temperature data and the time data; Determine and output an arc extinguishing chamber fault signal based on the arc extinguishing time data and a preset arc extinguishing time threshold; Determine the arc size data by using the temperature rise rate data and a preset arc temperature rise conversion threshold; The contact fault signal is determined and outputted by the arc size data and a preset circuit breaking arc threshold.

[0016] By adopting the above technical solution, it is possible to automatically judge the size of the circuit and whether the arc extinguishing chamber and the contact are faulty, which is convenient for users to perform maintenance.

[0017] Optional, including: Determining contact temperature data by using the arc extinguishing chamber temperature data and a preset arc extinguishing chamber thermal conductivity; Determining contact damage data through the contact temperature data, a preset contact protection threshold and the arc extinguishing time data; Determining contact state data by using the arc size data and a preset normal arc threshold value; The estimated contact life data is determined and outputted through the contact state data, the contact damage data and the circuit breaking arc threshold.

[0018] By adopting the above technical solution, the remaining life of the contact can be automatically calculated, which is convenient and quick.

[0019] The present application provides a computer-readable storage medium, which adopts the following technical solution: A computer-readable storage medium stores a computer program that can be loaded by a processor and execute a modular circuit breaker self-test method.

[0020] By adopting the above technical solution, the computer program is stored in a computer-readable storage medium.

[0021] In summary, the present application includes at least one of the following beneficial technical effects: 1. Improve maintenance efficiency, convenient and fast.

[0022] 2. Perform maintenance while the circuit is powered on to reduce the impact on normal use of the circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of a modular circuit breaker in an embodiment of the present application.

[0024] Figure 2 It is a structural diagram that hides a functional module and highlights the insulation slot.

[0025] Figure 3 It is a structural schematic diagram highlighting the adaptation of the functional module to the insulation slot.

[0026] Figure 4 is along Figure 2 Schematic diagram of the cross section along line AA.

[0027] Figure 5 It is a schematic diagram of the structure behind the hidden shell.

[0028] Figure 6 yes Figure 5 Schematic diagram of the enlarged structure at point B in the middle.

[0029] Figure 7 yes Figure 4 Schematic diagram of the enlarged structure at point C in the middle.

[0030] Figure 8 It is a flowchart of a modular circuit breaker self-test method in an embodiment of the present application.

[0031] Fig. 9 It is a flowchart diagram of step S2 to step S23.

[0032] Explanation of the accompanying drawings: 1. Shell; 11. Mounting slot; 12. Functional module; 13. Insulating slot; 14. Insulating flexible layer; 15. Snap-on structure; 2. Electrical connection assembly; 21. Inner slot; 212. Outer slot; 22. Conductive core; 23. Insulating shell; 24. Conductive terminal; 31. Protective elastic member; 32. Conductive rod; 33. Triggering conductive rod; 331. Triggering metal rod; 34. Disconnecting slot; 4. Linkage slot; 41. Commutation slot; 42. Commutation block; 421. First inclined plane; 422. Second inclined plane; 5. Segmented triggering slot; 51. Segmented triggering rod. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-9 This application is described in further detail.

[0034] The present application embodiment discloses a modular circuit breaker. Figure 1 The modular circuit breaker includes a shell 1, which can be made of insulating and corrosion-resistant materials. A control panel can also be integrated and embedded on the shell 1. A plurality of mounting slots 11 are provided on the shell 1. Functional modules 12 are inserted into the mounting slots 11. The mounting slots 11 correspond to the functional modules 12 one by one. The functional modules 12 are modular units of the circuit breaker functions, for example, a magnetic tripping mechanism for overvoltage or overcurrent protection is included in the functional module 12, a bimetallic strip tripping mechanism for overload protection is included in the functional module 12, and arc extinguishing chambers are integrated in these functional modules 12 to extinguish arcs generated when the contacts are tripped or closed.

[0035] The control panel includes a processor and a database. The processor may include a central processing unit such as a CPU or MPU or a host system built around a CPU or MPU, including hardware or software. After the meter has a processor, people can freely control the metering instrument through programming to make it run according to people's wishes. The processor can control local measurement transmission, remote measurement transmission, remote communication, etc. through internal protocols. Internal protocols refer to all protocols that achieve mutual communication or links within the same metering instrument or the same system, including: human-computer interaction protocols, software / hardware (interface) protocols, chip bus (C-Bus) protocols, internal bus (I-Bus) protocols, etc. Part or all of the protocols. With the development of integrated circuit technology, some protocols that belong to the external bus (E-Bus) protocol are also classified as internal protocols after the external bus (E-Bus) is integrated into the chip.

[0036] Reference Figure 2 and Figure 3An insulating groove 13 is provided on the bottom wall of the mounting groove 11 facing its own opening surface, and the opening surface of the insulating groove 13 is located at the center of the bottom wall of the mounting groove 11. The size of the opening surface of the insulating groove 13 is smaller than the size of the bottom wall of the mounting groove 11. The shape of the functional module 12 is adapted to fit with the inner wall of the insulating groove 13 and the inner wall of the mounting groove 11 at the same time, and the extending direction of the insulating groove 13 is the same as the extending direction of the mounting groove 11. The inner wall of the insulating groove 13 is covered with an insulating flexible layer 14, and the insulating flexible layer 14 also extends and covers the inner wall of the mounting groove 11 around the opening surface of the insulating groove 13. The insulating flexible layer 14 is made of an insulating material with a certain flexibility, such as rubber. After the functional module 12 is inserted into the mounting groove 11, it continues to be inserted into the insulating groove 13. The insulating flexible layer 14 is used to fit and insulate the functional module 12, and as the functional module 12 is fully inserted into the insulating groove 13, the end of the functional module 12 will be pressed against the insulating flexible layer 14 on the inner wall of the mounting groove 11 around the opening surface of the insulating groove 13, and the insulating flexible layer 14 here is deformed and filled between the side wall of the functional module 12 and the inner wall of the mounting groove 11 and the inner wall of the insulating groove 13. An electrical connection component 2 for electrically connecting with the functional module 12 is installed on the inner wall of the insulating groove 13, and a clamping structure 15 for clamping with the inner wall of the mounting groove 11 is installed on the functional module 12. The clamping structure 15 can be any structure with a clamping function, such as a buckle.

[0037] Reference Figure 4 An inner groove 21 and an outer groove 212 are provided on the bottom wall of the insulating groove 13 facing its own opening surface. The opening surface of the outer groove 212 is circumferentially surrounded by the outer ring of the opening surface of the inner groove 21. There are two inner grooves 21 provided on the bottom wall of an insulating groove 13, and the outer grooves 212 can be two to surround the two inner grooves 21 respectively, or one outer groove 212 can surround the two inner grooves 21 at the same time.

[0038] Reference Figure 4 The electrical connection component 2 includes a conductive core 22 sliding in the inner groove 21 and an insulating shell 23 sliding in the outer groove 212. The insulating shell 23 is in the shape of a hollow column. The conductive core 22 is in the hollow space of the insulating shell 23. The insulating shell 23 surrounds the conductive core 22 to achieve insulation from the outside. A conductive terminal 24 is embedded through the end of the insulating shell 23. The conductive terminal 24 is made of conductive metal. When the insulating shell 23 is pressed to the bottom, one end of the conductive terminal 24 is used to contact and electrically connect with the conductive core 22, and the other end of the conductive terminal 24 is used to contact and electrically connect with the conductive end on the functional module 12. The two conductive cores 22 in the same insulating groove 13 are used for power input and power output, respectively. The sliding direction of the conductive core 22 is parallel to that of the insulating shell 23.

[0039] Reference Figure 4 and Figure 5 and Figure 6A protective elastic member 31 is installed between the bottom wall of the inner groove 21 and the end of the conductive core 22 in the inner groove 21. The protective elastic member 31 can be a spring. The protective elastic member 31 is extended and retracted in the direction of pushing the conductive core 22 out of the inner groove 21. There are also different protective elastic members 31 installed between the bottom wall of the outer groove 212 and the insulating shell 23 to push the insulating shell 23 to slide toward the outside of the outer groove 212. The electrical connection component 2 includes a conductive rod 32 embedded in the inner wall of the insulating groove 13, the conductive rod 32 is embedded in the shell 1, and the conductive rod 32 is made of conductive metal. One end of the conductive rod 32 is electrically connected to the outer wall of the conductive core 22, and the conductive core 22 slides in the direction of approaching or moving away from the separation conductive rod 32. The other end of the conductive rod 32 extends into the adjacent insulating groove 13 and is electrically connected to the corresponding conductive core 22. For example, there are three insulating grooves 13 on the left, middle and right, and each insulating groove 13 is distributed with two conductive cores 22 on the left and right. The conductive rod 32 on the conductive core 22 on the right side of the insulating groove 13 in the middle position extends to the conductive core 22 on the left side of the insulating groove 13 on the right side to achieve electrical connection between multiple functional modules 12.

[0040] Reference Figure 4 and Figure 6 and Figure 7 A linkage groove 4 is provided on the inner wall of the inner groove 21, and the extension direction of the linkage groove 4 is parallel to the sliding direction of the conductive core 22. The end of the linkage groove 4 close to the insulating groove 13 is connected to the inner groove 21 where the conductive core 22 is located. A trigger conductive rod 33 slides in the linkage groove 4, and the trigger conductive rod 33 slides along the extension direction of the linkage groove 4. The end of the trigger conductive rod 33 close to the insulating groove 13 is bent toward the direction of entering the inner groove 21, and the bent and extended end of the trigger conductive rod 33 is flush with the outer wall of the conductive core 22, and the two ends of the trigger conductive rod 33 are respectively in contact with and electrically connected to the conductive core 22 and the conductive conductive rod 32.

[0041] Reference Figure 4 and Figure 6 and Figure 7A trigger metal rod 331 is embedded in the housing 1, and the two ends of the trigger metal rod 331 respectively contact between the two trigger conductive rods 33 in the same insulating slot 13 to achieve electrical connection between the two trigger conductive rods 33. A disconnection slot 34 is provided on the outer wall of the conductive core 22, and the disconnection slot 34 extends along the sliding direction of the conductive core 22, and the disconnection slot 34 is provided within the linear range where the bent end of the trigger conductive rod 33 is located, so that the disconnection slot 34 slides with the sliding of the conductive core 22, and the bent end of the trigger conductive rod 33 slides from the outer wall of the conductive core 22 to the disconnection slot 34, so that the trigger conductive rod 33 is disconnected from the conductive core 22. A reset spring is fixedly connected between the bent end of the trigger conductive rod 33 and the inner wall of the end of the linkage slot 4 close to the insulating slot 13, and the reset spring pushes the trigger conductive rod 33 in the direction away from the insulating slot 13 to extend and retract.

[0042] Reference Figure 4 and Figure 7 A commutation slot 41 is also provided between the linkage slot 4 and the outer slot 212. The commutation slot 41 is connected to the end of the linkage slot 4 away from the insulating slot 13. A commutation block 42 slides in the commutation slot 41. The two ends of the commutation block 42 slide in and out of the linkage slot 4 and the outer slot 212 respectively. A first inclined surface 421 is provided on the end of the commutation block 42 for sliding into the outer slot 212. The first inclined surface 421 is inclined in a direction closer to the linkage slot 4 and closer to the insulating slot 13. The first inclined surface 421 is used for the insulating shell 23 to contact to push the commutation block 42 into the linkage slot 4.

[0043] Reference Figure 7 A second inclined surface 422 is provided on the end of the trigger conductive rod 33 away from the reset spring. The second inclined surface 422 is inclined in a direction closer to the outer groove 212 and closer to the insulating groove 13. The second inclined surface 422 is used for the commutation block 42 to abut against, so as to push the trigger conductive rod 33 toward the insulating groove 13, so that the bent end of the trigger conductive rod 33 abuts against and is electrically connected to the conductive core 22.

[0044] Reference Figure 4 and Figure 6 A segmented trigger groove 5 is provided on the outer wall of the insulating shell 23, and the segmented trigger groove 5 extends along the sliding direction of the insulating shell 23. A segmented trigger rod 51 slides in the segmented trigger groove 5. One end of the segmented trigger rod 51 slides in the segmented trigger groove 5, and the other end of the segmented trigger rod 51 extends to slide in the segmented trigger groove 5 of the adjacent insulating shell 23, so that the insulating shell 23 slides a certain distance and then drives the insulating shell 23 in the adjacent insulating groove 13 to slide.

[0045] The implementation principle of a modular circuit breaker in the embodiment of the present application is as follows: when it is found that the tripping mechanism needs to be replaced, the corresponding functional module 12 can be taken out, and then the new functional module 12 can be inserted into the installation slot 11, and fixed by the snap-fit ​​structure 15. During the insertion of the functional module 12, the conductive end of the functional module 12 first contacts the conductive terminal 24 of the insulating shell 23, and pushes the insulating shell 23 to slide deep into the outer slot 212. During the sliding process, the end of the insulating shell 23 pushes the commutation block 42, and the commutation block 42 pushes the triggering conductive rod 33, slides out and fits onto the outer wall of the conductive core 22. At this time, the current of the conductive core 22 is connected to the conductive core 22 in the same insulating slot 13 through the triggering conductive rod 33, and then flows to the conductive conductive rod 32, and is connected to the conductive core 22 in the adjacent insulating slot 13 through the conductive conductive rod 32. This is a no-load conduction state; As the functional module 12 continues to be inserted, the segmented trigger rod 51 slides against the inner wall of the segmented trigger slot 5 close to the insulating slot 13, and continues to push the insulating shell 23. The inner wall of the segmented trigger slot 5 will push the segmented trigger rod 51 to slide. At this time, the segmented trigger rod 51 transmits the sliding force to the insulating shell 23 in the adjacent insulating slot 13. At this time, the end of the segmented trigger rod 51 is against the inner wall of the segmented trigger slot 5 of the insulating shell 23 of the adjacent insulating slot 13 away from the insulating slot 13, thereby driving the movement of the insulating shell 23 in the adjacent insulating slot 13. When the functional module 12 is pushed to the bottom , the conductive terminal 24 abuts against the conductive core 22, and pushes the conductive core 22 to completely retreat into the inner groove 21. As the conductive core 22 slides, the disconnecting groove 34 slides under the bent end of the trigger conductive rod 33, so that the trigger conductive rod 33 and the conductive core 22 are electrically disconnected. At this time, the current is connected to the conductive core 22 and the functional module 12 through the conductive conductive rod 32. At the same time, the insulating shell 23 in the adjacent insulating groove 13 also slides to push the trigger conductive rod 33 to abut against the conductive core 22, so that even if the functional module 12 is not installed in the adjacent insulating groove 13, the series circuit can be turned on.

[0046] The present application embodiment discloses a modular circuit breaker self-test method. Figure 8 , a modular circuit breaker self-test method comprises the following steps: S1. Obtaining arc extinguishing chamber temperature data and time data; S11, determining temperature rise rate data and arc extinguishing time data through arc extinguishing chamber temperature data and time data; S12, determining the arc extinguishing chamber fault signal through the arc extinguishing time data and the preset arc extinguishing time threshold and outputting it; S13, determining arc size data through temperature rise rate data and a preset arc temperature rise conversion threshold; S14, determining a contact fault signal through the arc size data and a preset circuit-breaking arc threshold and outputting the signal.

[0047] In detail: The arc extinguishing chamber temperature data is the detected temperature of the arc extinguishing chamber, which can be detected by a temperature sensor. In order to avoid being affected by the arc, the temperature sensor in the arc extinguishing chamber is installed at a position away from the contact of the arc extinguishing chamber. If the time data is 0.1ms, the arc extinguishing chamber temperature data is 30°, the time data is 0.2ms, and the arc extinguishing chamber temperature data is 31°, then the temperature rise rate data can be obtained as 1 / 0.1=10° / ms. If the arc extinguishing chamber temperature data stops rising when the time data is 7ms, it means that the arc has been extinguished at this time, and the time at this time is recorded as the arc extinguishing time data; if the arc extinguishing time threshold is 5ms, it means that under normal circumstances, the arc extinguishing time should be within 5ms, and at this time 7ms exceeds the range of 5ms, it means that there is a fault in the arc extinguishing chamber, such as the generation of a magnetic field In the event of a fault or structural damage, the arc extinguishing chamber fault signal is output to the user to remind the user to replace and repair. The arc size can be determined by the temperature rise rate data. The larger the arc, the more heat is released and the faster the temperature rise is. This is also related to the thermal conductivity coefficient in the arc extinguishing chamber. The relationship between the arc size and the temperature rise rate is the arc temperature rise conversion threshold, thereby obtaining the arc size data. The circuit breaking arc threshold indicates the arc size generated when the contacts are normally connected and broken. If the arc size data exceeds the range of the circuit breaking arc threshold, it means that the arc is too large. At this time, it may be caused by a contact fault, such as contact melting, which causes the cross-sectional area of ​​the contact to change, and the surface roughness changes, affecting the resistance value, etc. The corresponding contact fault signal is output and output to the user to remind the user to carry out repair and replacement.

[0048] Reference Fig. 9 , further comprising the following steps: S2. Determine the contact temperature data by using the arc extinguishing chamber temperature data and a preset arc extinguishing chamber thermal conductivity; S21, determining contact damage data through contact temperature data, preset contact protection threshold and arc extinguishing time data; S22, determining contact state data based on arc size data and a preset normal arc threshold; S23. Determine and output the estimated contact life data based on the contact status data, contact damage data and circuit breaking arc threshold.

[0049] In detail: The thermal conductivity coefficient of the arc extinguishing chamber is the relationship between the temperature in the arc extinguishing chamber and the contact temperature, which means how much heat the arc releases to the arc extinguishing chamber, and correspondingly, how much heat the contact receives from the arc at this time. Therefore, based on the arc extinguishing chamber temperature data detected, the contact temperature data of the approximate contact temperature range can be calculated; the contact protection threshold is the damage speed of the contact when it is exposed to high temperature. For example, if the contact protection threshold is (a°, b), it means that at a temperature of a°, the contact will be damaged by b, and the unit of b is damage / time. Therefore, the contact damage data can be calculated based on the contact temperature data, and the contact status data indicates the status of the contact according to the state of the arc release in the current situation, excluding abnormal situations such as excessive internal damage on the normal surface of the contact, or low internal damage to the contact but severe surface damage, so as to estimate how long the contact can be used, that is, the estimated contact life data.

[0050] The present application embodiment discloses a computer-readable storage medium. Figure 1 The computer-readable storage medium stores a computer program that can be loaded by a processor and executes a modular circuit breaker self-test method.

[0051] Computer-readable storage media include, for example, various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0052] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A modular circuit breaker, characterized in that: The invention comprises a shell (1), wherein a plurality of mounting grooves (11) are provided on the shell (1), a functional module (12) is inserted into the mounting groove (11), an insulating groove (13) is provided on the inner wall of the mounting groove (11), the insulating groove (13) and the inner wall of the mounting groove (11) are both covered with an insulating flexible layer (14), the functional module (12) is inserted into the mounting groove (11) and then further inserted into the insulating groove (13), the insulating flexible layer (14) is used to fit and insulate the functional module (12), an electrical connection component (2) for electrically connecting to the functional module (12) is provided on the inner wall of the insulating groove (13), and the functional module (12) is provided with a clamping structure (15) for clamping to the inner wall of the mounting groove (11).

2. A modular circuit breaker according to claim 1, characterized in that: An inner groove (21) and an outer groove (212) are provided on the inner wall of the insulating groove (13); an opening surface of the outer groove (212) circumferentially surrounds the outer ring of the opening surface of the inner groove (21); the electrical connection component (2) comprises a conductive core (22) arranged in the inner groove (21) and an insulating shell (23) slidably arranged in the outer groove (212); the insulating shell (23) surrounds the conductive core (22) to achieve insulation from the outside; a conductive terminal (24) is embedded through the insulating shell (23); the conductive terminal (24) is used to contact and electrically connect with the conductive core (22); and the conductive terminal (24) is used to contact and electrically connect with a conductive end on the functional module (12).

3. A modular circuit breaker according to claim 2, characterized in that: The conductive core (22) is slidably arranged in the inner groove (21); a protective elastic member (31) is arranged between the bottom wall of the inner groove (21) and the conductive core (22); the protective elastic member (31) is retracted in a direction of pushing the conductive core (22) out of the inner groove (21); the electrical connection assembly (2) comprises a conductive rod (32) embedded in the inner wall of the insulating groove (13); the conductive rod (32) is used to contact and electrically connect with the conductive core (22); the conductive core (22) slides in a direction of approaching to contact or moving away from the conductive rod (32); the conductive rod (32) is electrically connected to the conductive rod (32) in an adjacent mounting groove (11) to achieve electrical connection between a plurality of functional modules (12).

4. A modular circuit breaker according to claim 3, characterized in that: At least two conductive cores (22) are arranged in one insulating slot (13), and the two conductive cores (22) are used for inputting electricity and outputting electricity respectively. A plurality of trigger conductive rods (33) are arranged on the inner wall of the insulating slot (13), and two ends of the trigger conductive rods (33) are respectively abutted and electrically connected to the conductive core (22) and the conduction conductive rods (32). Adjacent trigger conductive rods (33) in the same insulating slot (13) are electrically connected. A disconnecting slot (34) is provided on the conductive core (22), and the disconnecting slot (34) is used to correspond to the trigger conductive rods (33) as the conductive core (22) slides, so that the trigger conductive rods (33) and the conductive core (22) are disconnected.

5. A modular circuit breaker according to claim 4, characterized in that: The inner wall of the insulating groove (13) is provided with a linkage groove (4) for the triggering conductive rod (33) to slide inside. A commutation groove (41) is provided between the linkage groove (4) and the outer groove (212). A commutation block (42) is slidably arranged in the commutation groove (41). The commutation block (42) is provided with a first inclined surface (421). The first inclined surface (421) is used for the insulating shell (23) to abut against so as to push the commutation block (42) into the linkage groove (4). The triggering conductive rod (33) is provided with a second inclined surface (422). The second inclined surface (422) is used for the commutation block (42) to abut against, so as to push the trigger conductive rod (33) out of the linkage slot (4) and electrically connect it to the conductive core (22); the insulating shell (23) is provided with a segmented trigger slot (5), in which a segmented trigger rod (51) is slidably arranged, and the segmented trigger rod (51) extends to slide in the segmented trigger slot (5) of the adjacent insulating shell (23), so that the insulating shell (23) slides a certain distance and then drives the insulating shell (23) in the adjacent insulating slot (13) to slide.

6. A self-test method for a modular circuit breaker, using the modular circuit breaker according to claim 5, characterized in that: include: Obtain arc extinguishing chamber temperature data and time data; Determine temperature rise rate data and arc extinguishing time data through the arc extinguishing chamber temperature data and the time data; Determine and output an arc extinguishing chamber fault signal based on the arc extinguishing time data and a preset arc extinguishing time threshold; Determine the arc size data by using the temperature rise rate data and a preset arc temperature rise conversion threshold; The contact fault signal is determined and outputted by the arc size data and a preset circuit breaking arc threshold.

7. A modular circuit breaker self-test method according to claim 6, characterized in that: include: Determining contact temperature data by using the arc extinguishing chamber temperature data and a preset arc extinguishing chamber thermal conductivity; Determining contact damage data through the contact temperature data, a preset contact protection threshold and the arc extinguishing time data; Determining contact state data by using the arc size data and a preset normal arc threshold value; The estimated contact life data is determined and outputted through the contact state data, the contact damage data and the circuit breaking arc threshold.

8. A computer-readable storage medium, characterized in that: A computer program is stored which can be loaded by a processor and executes the self-test method of a modular circuit breaker according to any one of claims 6 to 7.

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