Tripping control method and device, tripping controller and storage medium

Abstract

The invention provides a tripping control method and device, a tripping controller and a storage medium. The tripping control method is applied to the tripping controller. The protection element comprises a tripping controller and a tripper. The tripping control method comprises the following steps: acquiring first operation data of a protection element; executing pre-tripping control on the tripper under the condition that the first operation data meets the pre-tripping condition; the pre-tripping control comprises the steps of starting to drive the tripper and keeping driving for a first preset duration; the first preset duration is less than or equal to the non-tripping duration of the tripper; the non-tripping duration is the duration of the tripper from starting of driving to starting of tripping operation; acquiring second operation data of the protection element; under the condition that the second operation data meets the tripping condition, tripping control is carried out on the tripper; the tripping control comprises the step of continuously driving the tripper until the tripper completes the tripping operation. Therefore, the tripping time is shortened by driving the tripper in advance before the circuit system where the protection element is located fails.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit breakers, and particularly to a tripping control method, device, tripping controller and storage medium. Background Art

[0002] A circuit breaker is a device used to protect a load. When a fault occurs in the power supply and / or load of the load, the circuit breaker can effectively disconnect the power supply from the load, thereby reducing the damage to the load. The trip unit is the core of the circuit breaker. The shorter the tripping time from the occurrence of the fault to the completion of the tripping operation by the trip unit, the less the impact of the fault on the load. Summary of the Invention

[0003] Aiming at the deficiencies in the prior art, the present invention provides a tripping control method, device, tripping controller and storage medium.

[0004] In a first aspect, the present invention provides a tripping control method, which is applied to a tripping controller; the protection element includes the tripping controller and the trip unit; the method includes: obtaining first operation data of the protection element; when the first operation data meets the pre-tripping condition, performing pre-tripping control on the trip unit; the pre-tripping control includes starting to drive the trip unit and maintaining the driving for a first preset duration; the first preset duration is less than or equal to the non-tripping duration of the trip unit; the non-tripping duration is the duration between the start of driving the trip unit and the start of performing the tripping operation; obtaining second operation data of the protection element; when the second operation data meets the tripping condition, performing tripping control on the trip unit; the tripping control includes continuing to drive the trip unit until the trip unit completes the tripping operation.

[0005] In some embodiments, the method further includes: when the second operation data does not meet the tripping condition, stopping driving the trip unit to turn off the pre-tripping control.

[0006] In some embodiments, the method further includes: when the first operation data is greater than or equal to a first threshold, determining that the first operation data meets the pre-tripping condition; when the second operation data is greater than or equal to a second threshold, determining that the second operation data meets the tripping condition; and when the second operation data is less than the second threshold, determining that the second operation data does not meet the tripping condition; wherein, the first threshold is less than the second threshold.

[0007] In some embodiments, during multiple pre-tripping control processes performed before reaching the tripping condition, the trip unit is not made to reach the condition for performing the tripping operation.

[0008] In some embodiments, the duration between when the release is driven for the first preset duration and when the second operating data is acquired is a second preset duration; the method further includes: making the second preset duration less than a third preset duration, where the third preset duration is the duration between when the release is driven for the first preset duration and when the magnetic flux in the coil of the release completely decays.

[0009] In some embodiments, the protection element further includes a flash memory; the method further includes: reading configuration parameters from the flash memory, configuring the direct memory access (DMA) of the trip controller according to the configuration parameters to control the analog-to-digital converter (ADC) of the trip controller; the acquiring of the first operating data of the protection element includes: making the DMA control the ADC to collect the first operating data; the acquiring of the second operating data of the protection element includes: making the DMA control the ADC to collect the second operating data.

[0010] In some embodiments, the method further includes: performing filtering and / or splicing processing on the first operating data and the second operating data; and / or, the method further includes: recording the second operating data and storing the second operating data in the flash memory.

[0011] In a second aspect, the present invention further provides a trip control device, which is applied to a trip controller; the protection element includes the trip controller and a release; the device includes: an acquisition module, configured to acquire the first operating data of the protection element; and configured to acquire the second operating data of the protection element; and a control module, configured to perform a pre-trip control on the release when the first operating data meets a pre-trip condition; the pre-trip control includes starting to drive the release and maintaining the drive for a first preset duration; the first preset duration is less than or equal to the non-trip duration of the release; the non-trip duration is the duration between when the release starts to be driven and when the release starts to perform a trip operation; and configured to perform a trip control on the release when the second operating data meets a trip condition; the trip control includes continuing to drive the release until the release completes the trip operation.

[0012] In a third aspect, an embodiment of the present invention further provides a trip controller, including: a memory, configured to store a computer program; and a processor, configured to implement the method according to any one of the above when executing the computer program.

[0013] In a fourth aspect, an embodiment of the present invention further provides a computer-readable storage medium, in which a computer program is stored, and the computer program is used to implement the method according to any one of the above when executed by a processor.

[0014] The tripping control method provided by the embodiments of the present invention sets pre-tripping control to drive the tripping device in advance for a period of time before a fault occurs, and continues to drive the tripping device when it is determined that a fault has occurred later. In this way, by driving the tripping device in advance, the coil included in the tripping device accumulates a certain amount of magnetic flux. Then, when a fault occurs, the tripping device is continuously driven to continue accumulating magnetic flux until the tripping operation can be executed, thereby shortening the time interval between the occurrence of the fault and the tripping of the circuit breaker, shortening the tripping time, and quickly tripping the circuit breaker to reduce the impact of the fault on the load. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those skilled in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0016] Figure 1 It is a schematic structural diagram of a protection element provided by the embodiments of the present invention;

[0017] Figure 2 It is a schematic flow diagram of a tripping control method provided by the embodiments of the present invention;

[0018] Figure 3 It is a schematic structural diagram of the time composition from the drive of the tripping device powered by a current transformer to the execution of the tripping action provided by the embodiments of the present invention;

[0019] Figure 4 It is a schematic structural diagram of the time composition from the drive of the tripping device powered by an auxiliary power supply to the execution of the tripping action provided by the embodiments of the present invention;

[0020] Figure 5 It is an explanatory schematic diagram of a non-tripping time provided by the embodiments of the present invention;

[0021] Figure 6 It is a schematic structural diagram of a circuit control system for realizing the tripping of a circuit breaker provided by the embodiments of the present invention;

[0022] Figure 7 It is an exemplary implementation flow schematic diagram provided by the embodiments of the present invention;

[0023] Figure 8 It is a schematic structural diagram of a tripping control device provided by the embodiments of the present invention;

[0024] Figure 9 It is a schematic hardware structure diagram of a tripping controller provided by the embodiments of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work belong to the scope of protection of the present invention.

[0026] In the description of the present invention, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the described features. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or modules is not limited to the listed steps or modules, but optionally further includes steps or modules not listed, or optionally further includes other steps or modules inherent to these processes, methods, products or devices.

[0027] Referring to "embodiments" herein means that a particular feature, structure or characteristic described in connection with the embodiments can be included in at least one embodiment of the present invention. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0028] The embodiments of the present invention provide a tripping control method, and the tripping control method may include but is not limited to the following embodiments and combinations between the following embodiments.

[0029] In some embodiments, as Figure 1 shown, the tripping control method provided herein can be applied to the tripping controller 101; the tripping controller 101 can be included in the protection element 100 or can be provided outside the protection element 100, and its specific position can be set according to the actual situation. The protection element 100 can further include a tripping device 102. Among them, when a fault occurs in the power supply and / or load of the circuit system where the protection element 100 is located, the tripping controller 101 drives the tripping device 102 to perform a tripping operation to disconnect the power supply and the load connection, so as to ensure the personal safety of each device, line and staff in the circuit system. Among them, the protection element 100 can be but is not limited to a circuit breaker; the tripping controller 101 can be but is not limited to a single-chip microcomputer. The tripping device 102 can be but is not limited to an electronic tripping device.

[0030] In some embodiments, asFigure 2 As shown, the trip control method provided by the embodiments of the present invention may include but is not limited to the following steps and combinations thereof.

[0031] S1, obtaining first operation data of the protection element.

[0032] Wherein, the first operation data and the following-mentioned second operation data may be but are not limited to voltage data and / or current data of the protection element when the circuit system where the protection element is located is operating. The first operation data and the second operation data may be voltage data and / or current data of the protection element at different times, or may be voltage data and / or current data of the protection element at the same time.

[0033] In some embodiments, the protection element 100 may further include a flash memory (FLASH); the method may further include: reading configuration parameters from the flash memory, configuring the direct memory access (DMA) of the trip controller 101 according to the configuration parameters to control the analog-to-digital converter (ADC) of the trip controller; the obtaining of the first operation data of the protection element may include enabling the DMA to control the ADC to collect the first operation data; the obtaining of the second operation data of the protection element includes enabling the DMA to control the ADC to collect the second operation data.

[0034] It should be noted that, as described above, the trip control method provided herein is applied to a trip controller, that is to say, the trip controller may be the execution subject of the above trip control method. And, as described before, the trip controller may be but is not limited to a single-chip microcomputer. Hereinafter, the trip control method provided by the embodiments of the present invention will be specifically described taking the trip controller as a single-chip microcomputer as an example. That is to say, unless otherwise specified, the following operations are all executed in the single-chip microcomputer.

[0035] In some embodiments, the microcontroller may include, but is not limited to, a central processing unit (CPU), a DMA, and an ADC. Specifically, the acquisition of the first operating data of the protection element may be that the microcontroller receives the voltage data and / or current data of the protection element collected by the acquisition circuit. Here, the acquisition circuit may include, but is not limited to, a transformer and a signal conditioning circuit. Among them, the transformer may be used to collect the voltage data and / or current data of the protection element when the circuit system where the protection element is located is working. The signal conditioning circuit may be used to convert the voltage data and / or current data collected by the transformer into operating data that can be collected by the analog-to-digital converter (ADC) of the microcontroller. Inside the microcontroller, the CPU may configure the DMA by obtaining the configuration parameters stored in the flash memory (FLASH) so that the DMA can control the ADC; then, the ADC collects the voltage data and / or current data converted by the signal processing circuit; the DMA transmits the voltage data and / or current data collected by the ADC to the memory of the microcontroller; the CPU may obtain the saved operating data collected by the ADC from the memory as the aforementioned first operating data or second operating data.

[0036] S2. When the first operating data meets the pre-tripping condition, perform pre-tripping control on the tripping device; the pre-tripping control includes starting to drive the tripping device and maintaining the driving for a first preset duration; the first preset duration is less than or equal to the non-tripping duration of the tripping device; the non-tripping duration is the duration between the start of driving the tripping device and the start of performing the tripping operation.

[0037] Here, the so-called pre-tripping condition may refer to a warning condition set for determining that the circuit system where the protection element is located may have a fault. The so-called first preset duration is the duration of driving the tripping device when the first operating data meets the pre-tripping condition. The so-called pre-tripping control can be understood as the warning control in the case of meeting the warning condition. During this warning control period, since the circuit system where the protection element is located has not failed, at this time, the tripping device included in the protection element cannot be allowed to actually perform the tripping operation to cause a false trip. Therefore, during the warning control period, the driving duration of the tripping device cannot exceed the duration required for the tripping device to actually perform the tripping operation from the start of driving, that is, during the warning control period, the driving duration of the tripping device cannot exceed the non-tripping duration T0. It should be understood that due to differences in conditions such as process and use environment, there are certain differences in T0 among different tripping devices.

[0038] Therefore, in actual use, T0 can be an empirical value obtained through a large number of experiments. Specifically, as Figure 3 and Figure 4 shown in the schematic diagram of the time composition from the occurrence of a fault to the tripping of the circuit breaker. Among them, Figure 3The time component of a circuit breaker tripping is shown when a mutual inductor is used to power a trip unit included in the circuit breaker. Figure 4 The figure shows the time components of the circuit breaker tripping when the auxiliary power supply is used to power the trip unit contained in the circuit breaker. Figure 3 In the circuit breaker tripping time, the time for power supply establishment, waveform acquisition and processing time, magnetic flux driving action time and mechanical structure action time can be included. Figure 4 In the present invention, the tripping time of the circuit breaker may include: waveform acquisition and processing time, flux drive action time and mechanical structure action time.

[0039] Depend on Figure 3 and Figure 4 It can be seen that, whether using a mutual inductor or an auxiliary power supply, the tripping time of the circuit breaker generally includes the time from the start of driving to driving but not operating and the operating time. What is required in the embodiment of the present invention is the time from the start of driving to driving but not operating, that is, T0.

[0040] Based on this, as an exemplary embodiment, the determination of T0 may include but is not limited to measuring a large number of releases of the same type to obtain the following: Figure 5 The working current waveform of the release shown in FIG. 1 is then calculated based on the current waveform to obtain T0=t2-t1 of this type of release. Figure 5 In the figure, t1 is the start of driving, and the current continues to increase; t2 is the start of the tripping operation of the release, and the current decreases; t3 is the end of the tripping operation of the release, and the current increases; t4 is the tripping device equivalent to a resistive load, and the current is constant; t5 is the stop of the tripping drive, and the current slowly decreases. Among them, the time before t1 can correspond to Figure 3 The power supply establishment time and waveform acquisition processing time can also correspond to Figure 4 The time between t1 and t3 can be the corresponding Figure 3 and Figure 4 The flux driven action time in Figure 5 The current waveform of the trip unit is shown. Therefore, the action time of the mechanical structure (such as the action of the transmission rod and the contact in the circuit breaker) will not be reflected in the Figure 5 In actual situations, the mechanical structure action time is longer than the magnetic flux action time. As another exemplary implementation, T0 can also be determined by measuring a large number of releases of the same type, and the smallest value in the statistical measurement is used as T0 of the release of this type. In an embodiment of the present invention, the first preset time length can be less than or equal to T0 to minimize false tripping.

[0041] In some embodiments, the tripping control method provided by the embodiments of the present invention may further include: when the first operating data is greater than or equal to a first threshold, determining that the first operating data meets the pre-tripping condition.

[0042] Here, the first threshold may be referred to as the pre-tripping threshold. This pre-tripping threshold can be used to identify potential fault trends in advance. In the embodiments of the present invention, when the first operating data is greater than or equal to the pre-tripping threshold, it can be determined that there is a trend of failure in the circuit system where the protection element is located, and then it is determined that the first operating data meets the pre-tripping condition; when the first operating data is less than the pre-tripping threshold, it can be determined that there is no trend of failure in the circuit system where the protection element is located, and then it is determined that the first operating data does not meet the pre-tripping condition.

[0043] Exemplarily, in an overvoltage protection system or an overcurrent protection system, the first threshold may be set to 90% of a second threshold. For example, assuming the second threshold is set to 120% of the rated voltage or 120% of the rated current. Then, at this time, the first threshold may be 108% of the rated voltage or 108% of the rated current. In this case, if the first operating data is greater than or equal to 108% of the rated voltage or 108% of the rated current, it is determined that the first operating data meets the pre-tripping condition. That is, in the circuit system, when it is detected that the first operating data is greater than or equal to the first threshold, the circuit system may malfunction. At this time, driving the tripping device in advance can enable the coil of the tripping device to obtain a certain magnetic flux in advance, so as to shorten the time for driving the tripping device in the subsequent actual failure situation, thereby shortening the time interval from the failure to the completion of the circuit breaker tripping.

[0044] In some embodiments, multiple pre-tripping controls are performed before the tripping condition is reached. In this case, in order to prevent mis-tripping operations, it is necessary to ensure that multiple pre-tripping controls performed before the tripping condition is reached do not cause the tripping device to reach the condition for performing the tripping operation. That is, in order to prevent mis-tripping operations, multiple pre-tripping controls that have been performed before the tripping condition is reached do not allow the coil of the tripping device to accumulate enough energy to perform the tripping operation, and the tripping operation is not performed.

[0045] It should be noted that the ADC of the single-chip microcomputer can collect the operating data of the protection element continuously according to the set sampling frequency. And for each collected operating data, it will be judged whether it meets the pre-tripping condition and the subsequent tripping condition. Moreover, the first threshold corresponding to the pre-tripping condition is less than the second threshold corresponding to the tripping condition. Therefore, there are situations where multiple pre-tripping controls are performed before the tripping condition is reached.

[0046] To prevent the occurrence of the above-mentioned mis-tripping situation, an exemplary implementation may include: the first threshold can be appropriately larger. For example, the first threshold is set to 95% of the second threshold. In this way, the number of times of pre-tripping control execution can be reduced, or in other words, the frequency of pre-tripping control execution can be decreased. Another exemplary implementation may include: setting a limit on the running program to limit the number of times of pre-tripping control execution. For example, it is stipulated that the time interval between two pre-tripping controls is not less than a set time interval and so on.

[0047] S3. Obtain the second operating data of the protection element. Here, for the acquisition of the second operating data, it can be understood by referring to the acquisition method of the first operating data described above, and will not be elaborated here.

[0048] S4. When the second operating data meets the tripping condition, perform tripping control on the tripping device; the tripping control includes continuously driving the tripping device until the tripping device completes the tripping operation.

[0049] In some embodiments, the method may further include: when the second operating data is greater than or equal to the second threshold, determining that the second operating data meets the tripping condition; and when the second operating data is less than the second threshold, determining that the second operating data does not meet the tripping condition; where the first threshold is less than the second threshold.

[0050] It should be noted that in a circuit system, when the detected second operating data is higher than or equal to a certain threshold (such as the second threshold), it is determined that the circuit system has a fault, and then it is determined that the second operating data meets the tripping condition; when the detected second operating data is less than a certain threshold (such as the second threshold), it is determined that the circuit system has no fault, and then it is determined that the second operating data does not meet the tripping condition.

[0051] Exemplarily, in an overvoltage protection system or an overcurrent protection system, as described above, the second threshold can be set to 120% of the rated voltage or 120% of the rated current. In this case, when the second operating data is greater than or equal to 120% of the rated voltage or 120% of the rated current, it is determined that the overvoltage protection system or the overcurrent protection system has a fault, and then it is determined that the second operating data meets the tripping condition. In this case, it is determined that the second operating data meets the tripping condition; when the second operating data is less than 120% of the rated voltage or 120% of the rated current, it is determined that the overvoltage protection system or the overcurrent protection system has no fault, and then it is determined that the second operating data does not meet the tripping condition.

[0052] Afterwards, when it is determined that the second operating data meets the tripping condition, continue to drive the tripping device until the tripping device completes the tripping operation. When it is determined that the second operating data does not meet the tripping condition, stop driving the tripping device to turn off the pre-tripping control.

[0053] It should be noted that, in some embodiments, the time duration between when the tripping device is driven for the first preset duration and when the second operating data is obtained is the second preset duration; the method may further include: making the second preset duration less than the third preset duration, where the third preset duration is the time duration between when the tripping device is driven for the first preset duration and when the magnetic flux in the coil of the tripping device completely decays.

[0054] Here, the time duration between when the tripping device is driven for the first preset duration before a fault occurs in the circuit system where the protection element is located and when the second operating data is obtained is defined as the second preset duration. This second preset duration should be less than the third preset duration. The third preset duration is the time duration between when the tripping device is driven for the first preset duration and when the magnetic flux in the coil of the tripping device completely decays. What is intended to be expressed here is that after reaching the tripping condition, the magnetic flux obtained by the coil of the tripping device during the previous pre-tripping control stage cannot completely decay, otherwise, it is equivalent to not driving the tripping device in advance.

[0055] In some embodiments, the method may further include: performing filtering and / or splicing processing on the first operating data and the second operating data; and / or, the method further includes: recording the second operating data and storing the second operating data in a flash memory.

[0056] In the actual application process, whether it is to determine whether the pre-tripping condition is met according to the first operating data or to determine whether the tripping condition is met according to the second operating data, the first operating data and the second operating data can be first subjected to filtering and / or splicing processing to eliminate the influence of noise. In addition, when it is determined that the second operating data is fault data, record the second operating data and store the second operating data in a flash memory for later use in analyzing the cause of the fault.

[0057] To understand the present invention, refer to Figures 6 to 7 , where Figure 6 is a schematic diagram of a circuit control system for implementing a tripping control method provided by an embodiment of the present invention; Figure 7 is a schematic flowchart of the implementation of an exemplary tripping control method provided by an embodiment of the present invention. It should be noted that hereinafter Figure 6 and Figure 7 in the description of the circuit control system and the flowchart of the implementation of the tripping control method, the protection element may be a circuit breaker.

[0058] Specifically, as Figure 6 shown, the circuit control system 600 may include: a current transformer 601, a signal conditioning circuit 602, a microcontroller 603, a trip driving circuit 604, a trip device 605, and an interaction interface 606. Among them, the current transformer 601 is used to collect the operating data (such as voltage data and / or current data) of the circuit breaker ( Figure 6 not shown in the figure). The signal conditioning circuit 602 is used to convert the operating data of the circuit breaker collected by the current transformer into data that can be collected by the ADC of the single-chip microcomputer. The microcontroller 603 may be, but is not limited to, a single-chip microcomputer. The microcontroller 603 can be used to collect the operating data converted by the signal conditioning circuit through the ADC, and perform operations such as processing the collected data. For the specific tripping control process, please refer to the Figure 7 flow schematic diagram shown below, which will not be elaborated here. The trip driving circuit 604 can be a circuit that provides current for the coil of the trip device 605 to generate magnetic flux. The trip device 605 includes a coil; the coil can generate magnetic flux according to the current provided by the aforementioned trip driving circuit. When the magnetic flux reaches a certain amount, the attracted armature or other actuating mechanism included in the trip device performs a tripping operation under the action of the magnetic field force. The interaction interface 606 can have the ability of data communication to report faults, so that alarm devices (such as indicator lights or buzzers) issue alarms. The interaction interface 606 can also be connected to a display screen to display relevant content such as fault data, faulty devices, and fault types. In addition, the interaction interface 606 can also be connected to a flash memory (FLASH). The flash memory can store configuration data required for the single-chip microcomputer to configure DMA and ADC, etc.

[0059] Under the circuit control system as Figure 6 shown, specifically, the tripping control process is as Figure 7It may include the following steps: Step 1, the single-chip microcomputer completes initialization and executes Step 2. Step 2, the single-chip microcomputer reads the configuration data in the flash memory to configure the DMA to control the ADC, and executes Step 3. Step 3, the single-chip microcomputer collects the voltage data and / or current data of the circuit breaker through the ADC according to the set sampling frequency, and stores the voltage data and / or current data collected by the ADC in the memory of the single-chip microcomputer under the control of the DMA, and reads the voltage data and / or current data of the circuit breaker from the memory according to the set reading frequency, and executes Step 4. Step 4, the single-chip microcomputer filters and / or splices the read voltage data and / or current data, and executes Step 5. Step 5, the single-chip microcomputer makes a judgment based on the processed data to determine whether the pre-tripping condition is reached; if the pre-tripping condition is reached, execute Step 6; if the pre-tripping condition is not reached, execute Step 3. Step 6, the single-chip microcomputer issues an instruction to drive the trip device; this instruction causes the trip drive circuit to work to provide current for the coil of the trip device to generate the required magnetic flux, and execute Step 7. Step 7, the single-chip microcomputer continues to read the voltage data and / or current data of the circuit breaker and processes it, and executes Step 8. Step 8, the single-chip microcomputer determines whether the tripping condition is reached according to the collected voltage data and / or current data. If the tripping condition is reached, execute Step 9; if the tripping condition is not reached, stop driving the trip device and execute Step 10. Step 9, perform tripping control, that is, continue to drive the trip device until the trip device completes the tripping operation, disconnecting the power supply and load in the circuit system where the circuit breaker is located, and execute Step 11; Step 10, the single-chip microcomputer stops the magnetic flux drive and closes the pre-tripping control, that is, stops driving the trip device. Step 11, the single-chip microcomputer records the fault data and stores it in the FLASH, reports the fault through the interaction interface, and executes Step 12. Step 12, the operator checks the fault. After troubleshooting, the circuit breaker is closed and Step 1 is executed.

[0060] It should be noted that the pre-tripping condition, pre-tripping control, tripping condition, and tripping control have been elaborated in detail above. Here, it can also be understood according to the foregoing description and will not be repeated here.

[0061] The tripping control method provided by the embodiment of the present invention aims to drive the trip device in advance before a fault by setting pre-tripping control, so that magnetic flux remains on the coil of the trip device, but the tripping operation is not executed; then, when a fault occurs, continue to drive the trip device to continue increasing the magnetic flux on the coil until the required magnetic flux for executing the tripping operation is reached, thereby executing the tripping operation to complete the purpose of disconnecting the power supply and load of the circuit system by the protection element when a fault occurs. Since the trip device has been driven in advance before the fault, the time required to continue driving the trip device when a fault occurs will be shortened. Therefore, the time interval between the fault and the trip can be shortened, and thus, the power supply and load of the faulty circuit system can be quickly disconnected, and the impact of the fault on the load can be reduced.

[0062] In some embodiments, such as Figure 8 shown, an embodiment of the present invention further provides a trip control device 80, which is applied to a trip controller; the protection element includes the trip controller and a trip unit; the trip control device 80 may include: an acquisition module 801, configured to acquire first operation data of the protection element; and configured to acquire second operation data of the protection element; and a control module 802, configured to perform a pre-trip control on the trip unit when the first operation data meets a pre-trip condition; the pre-trip control includes starting to drive the trip unit and maintaining the driving for a first preset duration; the first preset duration is less than or equal to a non-trip duration of the trip unit; the non-trip duration is the duration between starting to drive the trip unit and starting to perform a trip operation; and configured to perform a trip control on the trip unit when the second operation data meets a trip condition; the trip control includes continuing to drive the trip unit until the trip unit completes the trip operation.

[0063] In some embodiments, the trip control device 80 may further include: a configuration module, configured to read configuration parameters from a flash memory, and configure a direct memory access (DMA) of the trip controller according to the configuration parameters to control an analog-to-digital converter of the trip controller; the acquisition module 801 may be configured to: enable the DMA to control the ADC to acquire the first operation data; and may also be configured to enable the DMA to control the ADC to acquire the second operation data.

[0064] In some embodiments, the control module 802 may further be configured to determine that the first operation data meets the pre-trip condition when the first operation data is greater than or equal to a first threshold.

[0065] In some embodiments, the control module 802 may further be configured to determine that the first operation data meets the pre-trip condition when the first operation data is greater than or equal to a first threshold; determine that the second operation data meets the trip condition when the second operation data is greater than or equal to a second threshold; and determine that the second operation data does not meet the trip condition when the second operation data is less than the second threshold; wherein, the first threshold is less than the second threshold.

[0066] In some embodiments, the control module 802 is further configured to perform filtering and / or splicing processing on the first operation data and the second operation data; and / or record the second operation data and store the second operation data in a flash memory.

[0067] It should be noted that the meanings of the first operation data, the second operation data, the pre - tripping condition, the pre - tripping control, the tripping condition, and the tripping control, etc. in the tripping control device 80 have been described in detail in the foregoing tripping control method. One can refer to the previous description for understanding and will not be elaborated here. It should be noted that when the tripping control device provided in the above - mentioned embodiment performs tripping control, only the division of the above - mentioned program modules is used for illustration. In actual application, the above - mentioned processing can be allocated to different program modules according to needs, that is, the internal structure of the device is divided into different program modules to complete all or part of the processing described above. In addition, the tripping control device provided in the above - mentioned embodiment and Figure 1 the embodiment of the tripping control method shown belong to the same concept. The specific implementation process can be seen in the method embodiment and will not be elaborated here.

[0068] To implement the method of the embodiment of the present invention, as Figure 9 shown, the embodiment of the present invention also provides a tripping controller 90, which may include: a memory 901 for storing a computer program; and a processor 902 for implementing the method described in any one of the above when executing the computer program. For example, the processor 902 can be used to: obtain the first operation data of the protection element; when the first operation data meets the pre - tripping condition, perform pre - tripping control on the tripping device; the pre - tripping control includes starting to drive the tripping device and maintaining the drive for a first preset duration; the first preset duration is less than or equal to the non - tripping duration of the tripping device; the non - tripping duration is the duration between the start of driving the tripping device and the start of performing the tripping operation; obtain the second operation data of the protection element; when the second operation data meets the tripping condition, perform tripping control on the tripping device; the tripping control includes continuing to drive the tripping device until the tripping device completes the tripping operation. The processor 902 can also implement the steps in any method described above and will not be elaborated one by one here.

[0069] It should be noted that the tripping controller provided in the above - mentioned embodiment and the embodiment of the tripping control method belong to the same concept. The specific implementation process can be seen in the method embodiment and will not be elaborated here.

[0070] Of course, in actual application, as Figure 9 shown, the tripping controller 90 may further include: at least one network interface 903. Each component in the tripping controller is coupled together through a bus system 904. It can be understood that the bus system 904 is used to realize the connection and communication between these components. The bus system 904 includes not only a data bus but also a power bus, a control bus, and a status signal bus. However, for the sake of clear illustration, in Figure 7Each of the various buses is labeled as a bus system 904. Among them, the number of the processors 902 can be at least one. The network interface 903 is used for communication between the trip controller and other devices in a wired or wireless manner. The memory 901 in the embodiments of the present invention is used to store various types of data to support the operation of the trip controller. The methods disclosed in the embodiments of the present invention above can be applied to the processor 902 or be implemented by the processor 902. The processor 902 may be an integrated circuit chip with the ability to process signals. During implementation, each step of the above method can be completed by the integrated logic circuit in hardware in the processor 902 or instructions in software form. The above-mentioned processor 902 can be a general-purpose processor, a digital signal processor (DSP), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The processor 902 can implement or execute the various methods, steps, and logic block diagrams disclosed in the embodiments of the present invention. The general-purpose processor can be a microprocessor or any conventional processor, etc. Combining with the steps of the method disclosed in the embodiments of the present invention, it can be directly embodied as a combination of hardware and software modules in a single-chip microcomputer to execute and complete. The software module can be located in a storage medium, and this storage medium is located in the memory 901. The processor 902 reads the information in the memory 901 and combines its hardware to complete the steps of the foregoing method. In an exemplary embodiment, the trip controller 90 can be implemented by one or more application-specific integrated circuits (ASICs), DSPs, programmable logic devices (PLDs), complex programmable logic devices (CPLDs), field-programmable gate arrays (FPGAs), general-purpose processors, controllers, microcontroller units (MCUs), microprocessors, or other electronic components for executing the foregoing method.

[0071] Specifically, the embodiments of the present invention provide a computer-readable storage medium, on which a computer program is stored. For example, it includes the memory 901 that stores the computer program. The above computer program can be executed by the processor 902 to complete the steps of the foregoing method. The computer-readable storage medium can be a memory such as FRAM, ROM, PROM, EPROM, EEPROM, Flash Memory, magnetic surface memory, optical disc, or CD-ROM.

[0072] In addition, in each embodiment of the present invention, each functional unit can be entirely integrated into one processing unit, or each unit can be separately regarded as one unit, or two or more units can be integrated into one unit; the above-mentioned integrated unit can be implemented in the form of hardware, or in the form of a combination of hardware and software functional units.

[0073] Those of ordinary skill in the art can understand that all or part of the steps of implementing the above method embodiments can be completed by hardware related to program instructions. The foregoing program can be stored in a computer-readable storage medium. When the program is executed, it performs the steps including the above method embodiments; and the foregoing storage medium includes: removable storage devices, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks and other various media that can store program codes.

[0074] Alternatively, if the above-mentioned integrated unit of the present invention is implemented in the form of a software functional module and sold or used as an independent product, it can also be stored in a computer-readable storage medium. Based on such an understanding, the technical solution of the embodiments of the present invention, in essence, or the part that makes a contribution to the prior art can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the methods described in the various embodiments of the present invention. And the foregoing storage medium includes: removable storage devices, ROM, RAM, magnetic disks, or optical disks and other various media that can store program codes.

[0075] In the above embodiments, the descriptions of the various embodiments each have their own focuses. For the parts not detailed in a certain embodiment, reference can be made to the detailed descriptions of other embodiments above, and details will not be repeated here.

[0076] The above has introduced in detail a tripping control method, device, tripping controller, and storage medium provided by the present invention. Specific examples are used herein to elaborate on the principle and implementation manner of the present invention. The descriptions of the above embodiments are only used to help understand the method and its core idea of the present invention; at the same time, for those skilled in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present invention.

[0077] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the various technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered to be within the scope described in this specification.

Claims

1. A tripping control method, characterized in that: Applied to trip controller; The protection element includes the trip controller and the tripper; the method includes: Acquiring first operating data of the protection element; In the case where the first operating data meets the pre-tripping condition, pre-tripping control is performed on the release; the pre-tripping control includes starting to drive the release and keeping driving for a first preset time; the first preset time is less than or equal to the non-tripping time of the release; the non-tripping time is the time between the start of driving and the start of the tripping operation of the release; Acquiring second operating data of the protection element; In the case where the second operating data meets the tripping condition, a tripping control is performed on the tripper; the tripping control includes continuing to drive the tripper until the tripper completes the tripping operation.

2. The method according to claim 1, characterized in that The method further comprises: When the second operating data does not satisfy the tripping condition, the driving of the tripper is stopped to turn off the pre-tripping control.

3. The method according to claim 1, characterized in that The method further comprises: When the first operating data is greater than or equal to a first threshold, determining that the first operating data satisfies a pre-tripping condition; When the second operating data is greater than or equal to a second threshold, it is determined that the second operating data meets the tripping condition; and when the second operating data is less than the second threshold, it is determined that the second operating data does not meet the tripping condition; wherein the first threshold is less than the second threshold.

4. The method according to claim 1, characterized in that: In a plurality of pre-tripping control processes performed before the tripping condition is reached, the tripping device is prevented from reaching the condition for performing the tripping operation.

5. The method according to claim 1, characterized in that The time from when the tripper is driven for the first preset time to when the second operating data is obtained is a second preset time; the method further includes: making the second preset time less than a third preset time, wherein the third preset time is the time from when the tripper is driven for the first preset time to when the magnetic flux in the coil of the tripper is completely attenuated.

6. The method according to any one of claims 1 to 5, characterized in that: The protection element further includes a flash memory; and the method further includes: Reading configuration parameters from the flash memory, and configuring a direct memory access DMA of the trip controller according to the configuration parameters to control an analog-to-digital converter ADC of the trip controller; The acquiring the first operation data of the protection element comprises: enabling the DMA to control the ADC to collect the first operation data; The acquiring the second operation data of the protection element includes: enabling the DMA to control ADC to collect the second operation data.

7. The method according to any one of claims 1 to 5, characterized in that: The method further comprises: filtering and / or splicing the first operation data and the second operation data; and / or, The method further includes: recording the second operation data, and storing the second operation data in a flash memory.

8. A trip control device, characterized in that: Applied to trip controller; The protection element includes the trip controller and the tripper; the device includes: an acquisition module, used for acquiring first operation data of the protection element; and used for acquiring second operation data of the protection element; and a control module, for executing pre-tripping control on the release when the first operating data meets the pre-tripping condition; the pre-tripping control includes starting to drive the release and keeping driving for a first preset time; the first preset time is less than or equal to the non-tripping time of the release; the non-tripping time is the time between the start of driving the release and the start of the tripping operation; and for executing tripping control on the release when the second operating data meets the tripping condition; the tripping control includes continuing to drive the release until the release completes the tripping operation.

9. A trip controller, characterized in that: include: Memory for storing computer programs; as well as A processor, configured to implement the method according to any one of claims 1 to 7 when executing the computer program.

10. A computer-readable storage medium, characterized in that: The computer readable medium stores a computer program, and when the computer program is executed by a processor, it is used to implement the method according to any one of claims 1 to 7.

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