Power distribution equipment stability management method and system, terminal and storage medium

Abstract

The invention relates to the technical field of power distribution, and particularly provides a power distribution equipment stability management method and system, a terminal and a storage medium. Calculating a difference value between the load current and a load current collected in the previous time, updating the load current to a first structural body, and updating the difference value to a second structural body; comparing the difference value with the original data of the second structural body, and if both are positive numbers or both are negative numbers, controlling a counter to add one; and if the absolute value of the difference value reaches a set threshold value or the count value of the counter reaches a set time threshold value, controlling an electronic release of the power distribution circuit breaker to switch a power supply, and switching the power supply from an internal rectifier to a standby battery. According to the invention, the electronic release of the power distribution circuit breaker is equipped with dual power supplies, and the power supplies are switched in time based on the fluctuation condition of the load current by monitoring the load current of the power distribution circuit breaker, so that the stability of power supply is ensured.

Description

Technical Field

[0001] The present invention belongs to the technical field of power distribution, and specifically relates to a method, system, terminal and storage medium for stability management of power distribution equipment. Background Art

[0002] Power distribution is the link in the power system that directly connects to users and distributes electrical energy to users. The circuit breaker is the core equipment in the power distribution cabinet. The circuit breaker is generally composed of a contact system, an arc extinguishing system, an operating mechanism, a release, a casing, etc. Its function is to cut off and connect the load circuit, as well as cut off the fault circuit to prevent the accident from expanding and ensure safe operation. The release is used to identify short circuits, undervoltage and other conditions. The working principle of the mechanical release includes: 1) When a short circuit occurs, the magnetic field generated by the large current (generally 10 to 12 times) overcomes the reaction spring, the release pulls the operating mechanism to operate, and the switch trips instantly. 2) When overloaded, the current becomes larger, the heat generation increases, and the bimetallic strip deforms to a certain extent to push the mechanism to operate, thereby causing the switch to trip; the larger the current, the shorter the operating time.

[0003] This type of release will only trip when the abnormality is serious, and its sensitivity is not high. The electronic release uses a mutual inductor to collect the current of each phase and compare it with the set value. When the current is abnormal, the microprocessor sends a signal to make the electronic release drive the operating mechanism to operate.

[0004] However, the electronic components of the electronic release rely on a stable power supply. Once the power supply voltage is unstable, the electronic release will misjudge. Summary of the invention

[0005] In view of the above-mentioned deficiencies in the prior art, the present invention provides a method, system, terminal and storage medium for managing the stability of power distribution equipment to solve the above-mentioned technical problems.

[0006] In a first aspect, the present invention provides a method for managing the stability of a power distribution device, comprising: The load current of the distribution circuit breaker is periodically detected by using a current sensor; Calculating the difference between the load current and the load current collected last time, updating the load current to the first structure, and updating the difference to the second structure; Comparing the difference with the original data of the second structure, if both are positive numbers or both are negative numbers, controlling the counter to increase by one; If the absolute value of the difference reaches a set threshold or the count value of the counter reaches a set number of times threshold, the electronic release of the distribution circuit breaker is controlled to switch the power supply from the internal rectifier to the backup battery.

[0007] In an optional embodiment, the power distribution circuit breaker includes an electronic release and a mechanical release.

[0008] In an optional embodiment, the method further comprises: If the load current is 0, it is determined that the distribution circuit breaker is tripped, and the tripping event is written into the log; Prompt information is generated based on the tripping event, and the prompt information is sent to the remote management terminal through a wireless communication chip, wherein the address of the remote management terminal is pre-stored in the wireless communication chip.

[0009] In an optional embodiment, the method further comprises: A first structure and a second structure are pre-created in a register of a complex programmable logic device, wherein the complex programmable logic device uses an independent rechargeable power supply.

[0010] In a second aspect, the present invention provides a distribution equipment stability management system, comprising: A current detection module, used for periodically detecting a load current of a distribution circuit breaker using a current sensor; A current processing module, used for calculating the difference between the load current and the load current collected last time, updating the load current to the first structure, and updating the difference to the second structure; A difference counting module, used for comparing the difference with the original data of the second structure, and controlling a counter to increase by one if both are positive or negative; The power switching module is used to control the electronic release of the distribution circuit breaker to switch the power supply from the internal rectifier to the backup battery if the absolute value of the difference reaches a set threshold or the count value of the counter reaches a set number of times threshold.

[0011] In an optional embodiment, the power distribution circuit breaker includes an electronic release and a mechanical release.

[0012] In an optional embodiment, the system further includes: An event recording module, configured to determine that the distribution circuit breaker is tripped if the load current is 0, and write the tripping event into a log; The event prompt module is used to generate prompt information based on the tripping event and send the prompt information to the remote management terminal through a wireless communication chip, wherein the address of the remote management terminal is pre-stored in the wireless communication chip.

[0013] In an optional embodiment, the system further includes: A basic building block is used to pre-create a first structure and a second structure in a register of a complex programmable logic device, wherein the complex programmable logic device uses an independent rechargeable power supply.

[0014] In a third aspect, a terminal is provided, including: processor, memory, wherein: The memory is used to store computer programs. The processor is used to call and run the computer program from the memory, so that the terminal executes the above-mentioned terminal method.

[0015] According to a fourth aspect, a computer storage medium is provided, wherein the computer-readable storage medium stores instructions, and when the instructions are executed on a computer, the computer executes the methods described in the above aspects.

[0016] The beneficial effects of the present invention are that the distribution equipment stability management method, system, terminal and storage medium provided by the present invention equip the electronic release of the distribution circuit breaker with a dual power supply, and monitor the load current of the distribution circuit breaker, and switch the power supply in time based on the fluctuation of the load current to ensure the stability of the power supply. In addition, the sensitivity and accuracy of the distribution circuit breaker are improved by configuring the distribution circuit breaker with an electronic release and a mechanical release.

[0017] In addition, the invention has a reliable design principle, a simple structure and a very broad application prospect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 is a schematic flow chart of a method according to an embodiment of the present invention.

[0020] Figure 2 is a schematic block diagram of a system according to an embodiment of the present invention.

[0021] Figure 3 A schematic diagram of the structure of a terminal provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0024] The power distribution equipment stability management method provided in the embodiment of the present invention is executed by a computer device, and accordingly, the power distribution equipment stability management system runs in the computer device.

[0025] Figure 1 is a schematic flow chart of a method according to an embodiment of the present invention. Figure 1 The execution subject may be a distribution equipment stability management system. According to different requirements, the order of the steps in the flow chart may be changed, and some may be omitted.

[0026] like Figure 1 As shown, the method includes: Step 110, using a current sensor to periodically detect the load current of the distribution circuit breaker; Step 120, calculating the difference between the load current and the load current collected last time, updating the load current to the first structure, and updating the difference to the second structure; Step 130, comparing the difference with the original data of the second structure, if both are positive or both are negative, then controlling the counter to increase by one; Step 140: If the absolute value of the difference reaches a set threshold or the count value of the counter reaches a set number of times threshold, the electronic release of the distribution circuit breaker is controlled to switch the power supply from the internal rectifier to the backup battery.

[0027] To facilitate understanding of the present invention, the power distribution equipment stability management method provided by the present invention is further described below based on the principle of the power distribution equipment stability management method of the present invention and the process of managing the stability of the power distribution equipment in the embodiment.

[0028] Specifically, at the hardware level, a complex programmable logic device is added to the distribution circuit breaker, and the complex programmable logic device includes a register. The distribution circuit breaker is equipped with a mechanical release and an electronic release. The power supply of the electronic release includes an internal rectifier power supply and a backup battery. The internal rectifier power supply and the backup battery are connected in parallel, and MOS tubes are respectively provided on the parallel branches of the internal rectifier power supply and the backup battery. The gates of the two MOS tubes are respectively connected to the two control pins of the complex programmable logic device. The complex programmable logic device is also electrically connected to a current sensor, which is used to detect the load current of the distribution circuit breaker. The complex programmable logic device uses an independent rechargeable power supply.

[0029] The power distribution equipment stability management method is executed by a complex programmable logic device, including: S1. Use a current sensor to regularly detect the load current of the distribution circuit breaker.

[0030] Using high-precision current sensors, the load current of the distribution circuit breaker is regularly detected at preset time intervals (such as every second or every minute). This step ensures the real-time and accuracy of the current data, providing a reliable basis for subsequent analysis.

[0031] S2. Calculate the difference between the load current and the load current collected last time, update the load current to the first structure, and update the difference to the second structure.

[0032] A first structure and a second structure are pre-created in a register of a complex programmable logic device.

[0033] In the pre-designed registers inside the complex programmable logic device (CPLD), two structures are created: the first structure is used to store the latest load current value, and the second structure is used to record the load current difference between each detection and the previous detection. Whenever new load current data is collected, the current value in the first structure is updated immediately, and the difference is calculated and updated to the second structure. This design optimizes the data processing process and improves the efficiency and accuracy of data processing.

[0034] S3. Compare the difference with the original data of the second structure. If both are positive numbers or both are negative numbers, control the counter to increase by one.

[0035] Compare the currently detected difference with the last difference recorded in the second structure. If both show that the current is increasing (i.e., both are positive) or decreasing (i.e., both are negative), it is considered a continuous trend, and a dedicated counter is controlled to add one. This step helps to identify the long-term trend of current changes and provide a basis for subsequent decision-making.

[0036] S4. If the absolute value of the difference reaches a set threshold or the count value of the counter reaches a set number of times threshold, the electronic release of the distribution circuit breaker is controlled to switch the power supply from the internal rectifier to the backup battery.

[0037] The system continuously monitors whether the absolute value of the difference reaches the preset safety threshold (indicating that the load current has changed significantly), or whether the count value of the counter reaches the set number of times threshold (indicating that the current change has lasted for a period of time). Once any of the conditions are met, the electronic release of the distribution circuit breaker is immediately triggered to seamlessly switch the current power supply from the internal rectifier to the backup battery to ensure the continuity and stability of the power supply.

[0038] S5. If the electronic release fails, there is still a mechanical release that will trip when the short circuit or undervoltage is more serious.

[0039] Considering the extreme situations that the system may face, such as failure of the electronic release, the system is also equipped with a mechanical release as backup protection. In the event of a short circuit or undervoltage, even if the electronic release fails, the mechanical release can quickly trigger a trip, cut off the power supply, and protect the circuit safety.

[0040] S6. If the load current is 0, determine that the distribution circuit breaker is tripped, and write the tripping event into a log; generate a prompt message based on the tripping event, and send the prompt message to the remote management terminal through a wireless communication chip, wherein the wireless communication chip pre-stores the address of the remote management terminal.

[0041] When the load current is detected to be 0, the system determines that the distribution circuit breaker has tripped and immediately records the tripping event in the system log. Subsequently, based on the tripping event, the system automatically generates a prompt message containing detailed information (such as tripping time, cause speculation, etc.), and sends the prompt message to the remote management terminal through the remote management terminal address pre-configured in the wireless communication chip. This step ensures that the operation and maintenance personnel can quickly obtain fault information, take timely countermeasures, and reduce the impact of the fault on system operation.

[0042] In some embodiments, the power distribution equipment stability management system may include multiple functional modules composed of computer program segments. The computer programs of each program segment in the power distribution equipment stability management system may be stored in a memory of a computer device and executed by at least one processor to perform (see Figure 1 Description) Functions of stability management of power distribution equipment.

[0043] In this embodiment, the distribution equipment stability management system can be divided into multiple functional modules according to the functions it performs, such as Figure 2As shown. The functional modules of the system 200 may include: a current detection module 210, a current processing module 220, a difference counting module 230 and a power switching module 240. The module referred to in the present invention refers to a series of computer program segments that can be executed by at least one processor and can complete fixed functions, which are stored in a memory. In this embodiment, the functions of each module will be described in detail in subsequent embodiments.

[0044] A current detection module, used for periodically detecting a load current of a distribution circuit breaker using a current sensor; A current processing module, used for calculating the difference between the load current and the load current collected last time, updating the load current to the first structure, and updating the difference to the second structure; A difference counting module, used for comparing the difference with the original data of the second structure, and controlling a counter to increase by one if both are positive or negative; The power switching module is used to control the electronic release of the distribution circuit breaker to switch the power supply from the internal rectifier to the backup battery if the absolute value of the difference reaches a set threshold or the count value of the counter reaches a set number of times threshold.

[0045] Optionally, as an embodiment of the present invention, the distribution circuit breaker includes an electronic release and a mechanical release.

[0046] Optionally, as an embodiment of the present invention, the system further includes: An event recording module, configured to determine that the distribution circuit breaker is tripped if the load current is 0, and write the tripping event into a log; The event prompt module is used to generate prompt information based on the tripping event and send the prompt information to the remote management terminal through a wireless communication chip, wherein the address of the remote management terminal is pre-stored in the wireless communication chip.

[0047] Optionally, as an embodiment of the present invention, the system further includes: A basic building block is used to pre-create a first structure and a second structure in a register of a complex programmable logic device, wherein the complex programmable logic device uses an independent rechargeable power supply.

[0048] Figure 3 A schematic diagram of the structure of a terminal 300 provided in an embodiment of the present invention. The terminal 300 can be used to execute the power distribution equipment stability management method provided in an embodiment of the present invention.

[0049] The terminal 300 may include: a processor 310, a memory 320 and a communication unit 330. These components communicate via one or more buses. Those skilled in the art will appreciate that the server structure shown in the figure does not limit the present invention, and it may be a bus structure or a star structure, and may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently.

[0050] The memory 320 can be used to store the execution instructions of the processor 310, and the memory 320 can be implemented by any type of volatile or non-volatile storage terminal or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk. When the execution instructions in the memory 320 are executed by the processor 310, the terminal 300 can perform some or all of the steps in the following method embodiments.

[0051] The processor 310 is the control center of the storage terminal, and uses various interfaces and lines to connect various parts of the entire electronic terminal. It runs or executes software programs and / or modules stored in the memory 320, and calls data stored in the memory to perform various functions of the electronic terminal and / or process data. The processor can be composed of an integrated circuit (IC), for example, it can be composed of a single packaged IC, or it can be composed of multiple packaged ICs with the same or different functions. For example, the processor 310 can only include a central processing unit (CPU). In the embodiment of the present invention, the CPU can be a single computing core or multiple computing cores.

[0052] The communication unit 330 is used to establish a communication channel so that the storage terminal can communicate with other terminals, receive user data sent by other terminals or send user data to other terminals.

[0053] The present invention also provides a computer storage medium, wherein the computer storage medium may store a program, and when the program is executed, the program may include some or all of the steps in each embodiment provided by the present invention. The storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM) or a random access memory (RAM).

[0054] Therefore, the present invention equips the electronic release of the distribution circuit breaker with a dual power supply, monitors the load current of the distribution circuit breaker, and switches the power supply in time based on the fluctuation of the load current to ensure the stability of power supply. In addition, the sensitivity and accuracy of the distribution circuit breaker are improved by configuring the electronic release and the mechanical release for the distribution circuit breaker. The technical effects that can be achieved by this embodiment can be found in the description above and will not be repeated here.

[0055] Those skilled in the art can clearly understand that the technology in the embodiments of the present invention can be implemented by means of software plus a necessary general hardware platform. Based on this understanding, the technical solution in the embodiments of the present invention, in essence or in other words, the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a disk or an optical disk, and other media that can store program codes, including several instructions for enabling a computer terminal (which can be a personal computer, a server, or a second terminal, a network terminal, etc.) to execute all or part of the steps of the methods described in each embodiment of the present invention.

[0056] In this specification, the same or similar parts between the various embodiments can be referred to each other. In particular, for the terminal embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the description in the method embodiment.

[0057] In the several embodiments provided by the present invention, it should be understood that the disclosed systems and methods can be implemented in other ways. For example, the system embodiments described above are only schematic. For example, the division of the modules is only a logical function division. There may be other division methods in actual implementation, such as multiple modules or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of systems or modules, which can be electrical, mechanical or other forms.

[0058] The modules described as separate components may or may not be physically separated, and the components shown as modules may or may not be physical modules, that is, they may be located in one place or distributed on multiple network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0059] In addition, each functional module in each embodiment of the present invention may be integrated into one processing module, or each module may exist physically separately, or two or more modules may be integrated into one module.

[0060] Although the present invention has been described in detail with reference to the accompanying drawings and in combination with the preferred embodiments, the present invention is not limited thereto. Without departing from the spirit and essence of the present invention, a person of ordinary skill in the art may make various equivalent modifications or substitutions to the embodiments of the present invention, and these modifications or substitutions shall be within the scope of the present invention. Any person of ordinary skill in the art may easily think of changes or substitutions within the technical scope disclosed by the present invention, and these shall be within the scope of protection of the present invention.

Claims

1. A method for managing the stability of power distribution equipment, characterized in that: include: The load current of the distribution circuit breaker is periodically detected by using a current sensor; Calculating the difference between the load current and the load current collected last time, updating the load current to the first structure, and updating the difference to the second structure; Comparing the difference with the original data of the second structure, if both are positive numbers or both are negative numbers, controlling the counter to increase by one; If the absolute value of the difference reaches a set threshold or the count value of the counter reaches a set number of times threshold, the electronic release of the distribution circuit breaker is controlled to switch the power supply from the internal rectifier to the backup battery.

2. The method according to claim 1, characterized in that The power distribution circuit breaker includes an electronic release and a mechanical release.

3. The method according to claim 1, characterized in that The method further comprises: If the load current is 0, it is determined that the distribution circuit breaker is tripped, and the tripping event is written into the log; Prompt information is generated based on the tripping event, and the prompt information is sent to the remote management terminal through a wireless communication chip, wherein the address of the remote management terminal is pre-stored in the wireless communication chip.

4. The method according to claim 1, characterized in that The method further comprises: A first structure and a second structure are pre-created in a register of a complex programmable logic device, wherein the complex programmable logic device uses an independent rechargeable power supply.

5. A distribution equipment stability management system, characterized in that: include: A current detection module, used for periodically detecting a load current of a distribution circuit breaker using a current sensor; A current processing module, used for calculating the difference between the load current and the load current collected last time, updating the load current to the first structure, and updating the difference to the second structure; A difference counting module, used for comparing the difference with the original data of the second structure, and controlling a counter to increase by one if both are positive or negative; The power switching module is used to control the electronic release of the distribution circuit breaker to switch the power supply from the internal rectifier to the backup battery if the absolute value of the difference reaches a set threshold or the count value of the counter reaches a set number of times threshold.

6. The system according to claim 5, characterized in that The power distribution circuit breaker includes an electronic release and a mechanical release.

7. The system according to claim 5, characterized in that The system further comprises: An event recording module, configured to determine that the distribution circuit breaker is tripped if the load current is 0, and write the tripping event into a log; The event prompt module is used to generate prompt information based on the tripping event and send the prompt information to the remote management terminal through a wireless communication chip, wherein the address of the remote management terminal is pre-stored in the wireless communication chip.

8. The system according to claim 5, characterized in that The system further comprises: A basic building block is used to pre-create a first structure and a second structure in a register of a complex programmable logic device, wherein the complex programmable logic device uses an independent rechargeable power supply.

9. A terminal, characterized in that: include: A memory for storing a power distribution equipment stability management program; A processor is used to implement the steps of the power distribution equipment stability management method as described in any one of claims 1 to 4 when executing the power distribution equipment stability management program.

10. A computer-readable storage medium storing a computer program, characterized in that: The readable storage medium stores a power distribution equipment stability management program, and when the power distribution equipment stability management program is executed by a processor, the steps of the power distribution equipment stability management method according to any one of claims 1 to 4 are implemented.

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