A method for optimizing the configuration of distribution automation terminals

Abstract

This invention relates to a method for optimizing the configuration of a power distribution automation terminal, comprising the following steps: S1, providing a power distribution automation terminal, which has a built-in processor and memory; S2, providing a host computer and connecting it to the power distribution automation terminal, the host computer having protection logic configuration software, point table list generation software, and programming software; S3, the user drags and drops logic elements and connects them in the graphical programming interface of the protection logic configuration software to construct a logic diagram; S4, the point table list generation software converts the logic diagram into a point table list, which contains the logical mapping relationship between input signals and output actions; S5, the programming software compiles the point table list into PLC firmware and programs it into memory; S6, the power distribution automation terminal automatically restarts, the processor loads the PLC firmware, and executes the protection function in real time according to the logical mapping relationship. This method can improve the adaptability and scalability of the power distribution automation terminal, reduce costs, and increase efficiency.

Description

Technical Field

[0001] This invention relates to the field of power distribution system automation technology, and specifically to a method for optimizing the configuration of power distribution automation terminals. Background Technology

[0002] In power distribution systems, distribution automation terminals are key devices for realizing smart grids, typically deployed at critical nodes such as substations, switching stations, and distribution lines. The core functions of distribution automation terminals are to monitor grid operating parameters (such as voltage, current, and frequency) in real time, execute control operations on switching equipment (such as opening and closing switches), and implement relay protection functions for lines, transformers, and other equipment. This ensures that when faults occur (such as short circuits or overloads), the grid can quickly, reliably, and selectively isolate faulty areas, guaranteeing the safety of the main grid and the continuity of power supply.

[0003] Traditional power distribution automation terminals typically employ fixed hardware logic or pre-programmed software to implement protection functions, responsible for monitoring, controlling, and protecting equipment in the power distribution network. Fixed hardware logic circuits utilize specific electronic components (such as integrated circuits, programmable logic devices (PLDs / FPGAs) to construct protection logic, implementing specific protection functions (such as overcurrent protection, zero-sequence protection, etc.) through hard-wired connections. Changing these functions requires physical hardware replacement or rewiring. Pre-programmed software, on the other hand, consists of pre-written and burned protection programs embedded in the terminal device's microprocessor. These programs encapsulate specific protection algorithms and logical judgment processes, and are determined at the factory.

[0004] However, traditional power distribution automation terminals have the following problems in actual use: (1) The structure of fixed hardware logic or preset software program determines that its protection logic is not flexible enough and it is difficult to quickly adapt to the protection logic requirements of different scenarios; (2) The configuration process is complicated and requires professional programming knowledge. This not only requires high skills from the operator, but also the configuration process usually involves many steps, is prone to errors, and has a long debugging cycle, which increases the difficulty of operation and maintenance management and manpower costs; (3) The implementation of protection functions is highly dependent on the specific underlying hardware platform. The hardware is highly dependent, and the cost and upgrade are limited. Hardware failure may cause the protection function to fail completely. Software updates are also limited by the support capabilities of the hardware platform. Summary of the Invention

[0005] The technical problem to be solved by this invention is to provide an optimized configuration method for distribution automation terminals. This optimized configuration method enables flexible configuration of operating logic, improves the adaptability and scalability of distribution automation terminals, and not only offers high flexibility to adapt to the diverse needs of complex power systems, but also reduces hardware dependence, lowers system costs and maintenance expenses, and improves system deployment efficiency and operational reliability. The technical solution adopted is as follows:

[0006] A method for optimizing the configuration of a power distribution automation terminal includes the following steps: S1, providing a power distribution automation terminal, which has a built-in processor and memory; characterized in that it further includes the following steps:

[0007] S2. Provide a host computer and connect the host computer to the power distribution automation terminal. The host computer is equipped with protection logic configuration software, point table list generation software and programming software. The protection logic configuration software has a graphical programming interface.

[0008] S3. The user drags and drops logic elements and connects each logic element in the graphical programming interface of the protection logic configuration software to construct the logic diagram of the power distribution automation terminal operation.

[0009] S4. The user starts the point table list generation software, which converts the logic diagram into a point table list. The point table list contains the logical mapping relationship between input signals and output actions.

[0010] S5. The programming software compiles the point list into PLC firmware and programs it into the memory.

[0011] S6. The power distribution automation terminal automatically restarts, the processor loads the PLC firmware in the memory, and executes the protection function in real time according to the logical mapping relationship therein.

[0012] In the above-mentioned optimized configuration method for power distribution automation terminals, in the power distribution automation terminal and host computer provided in steps S1-S2, the processor is used to run various software and coordinate the work of various modules; the protection logic configuration software can provide a graphical programming interface, and users can construct the logic diagram of the power distribution automation terminal by dragging and dropping logic elements (such as AND gates, OR gates, NOT gates, time delays, etc.) and connecting them; the point table list generation software can parse the logic diagram drawn by the user into a point table list; the burning software can compile the point table list into PLC firmware and burn it into the memory. In step S3, users can drag and drop logic elements to construct logic diagrams in the graphical programming interface of the protection logic configuration software. For example, defining "when an overcurrent signal (I1) and a voltage anomaly signal (I2) occur simultaneously, the circuit breaker will be triggered to trip (O1) after a 5-second delay" is allowed. Users can connect logic elements with the mouse to complete the logic diagram drawing. The logic diagram can define the logical relationship between input signals (such as voltage, current, and switch status) and output actions (such as circuit breaker tripping and alarm signals). The protection logic configuration software supports dynamic logic updates, realizing the visual definition of the operating logic. Users do not need to delve into programming; they can define and modify the operating logic simply through the graphical programming interface. Users can modify the logic diagram and rewrite it at any time, adapting to the diverse needs of complex power systems and offering high flexibility. In steps S4-S5, the user can click the "Generate Point List" button to start the point list generation software. The point list generation software converts the logic diagram drawn by the user into a point list. The point list is stored in MTB format and contains the logical mapping relationship between input signals (such as voltage, current, and switch status) and output actions (such as circuit breaker tripping and alarm signals). Then, the programming software compiles the point list into PLC firmware (PLC firmware is the software part embedded in the controller hardware. It is a collection of control logic, operating system, and drivers that enables the PLC to perform its predetermined functions), ensuring hardware compatibility, and then transfers it to the memory. This realizes the automatic generation of point lists and the automation of the programming process, reducing deployment time from many hours in the traditional method to several minutes, improving system deployment efficiency, enhancing user experience, and improving market competitiveness. In step S6, after the programming software is completed, the power distribution automation terminal will automatically start. The processor will automatically load the PLC firmware in the memory, collect input signals in real time, and execute protection functions in real time according to the logic mapping. For example, when I1 (overcurrent) and I2 (voltage anomaly) simultaneously meet the conditions, the processor triggers a delay timer according to the logic mapping, and executes O1 (circuit breaker trip) after 5 seconds, supporting real-time execution of protection functions. In addition, users can modify the logic diagram and regenerate the point table list during the operation of the power distribution automation terminal, and then update the configuration of the power distribution automation terminal through the programming software to achieve rapid adjustment of the protection logic.

[0013] Specifically, the power distribution automation terminal can be a domestically produced device, and the processor can be a domestically produced Fuxi processor.

[0014] As a preferred embodiment of the present invention, the memory is a non-volatile memory. Non-volatile memory is used to store PLC firmware transmitted from the programming software, and has advantages such as data persistence, fast read / write speed, low power consumption, and high storage density.

[0015] As a preferred embodiment of the present invention, in step S4, the point table generation software converts the logic diagram into a point table list, including: (1) parsing the logic diagram: identifying the input signals, output actions and logical relationships of the logic diagram, and extracting each logic element and their logical relationships; (2) generating a point table list: converting the parsed logical relationships into a constructed point table list (mtb format), and displaying the logical mapping relationship from input signals to output actions (such as "input I1 AND I2 → output O1").

[0016] As a preferred embodiment of the present invention, in step S4, before converting the logic diagram into a point table list, the point table generation software automatically verifies the logic diagram to detect whether there are loops or conflicts. If loops or conflicts exist, the user is prompted to modify the logic diagram; if there are no loops or conflicts, the point table generation software converts the logic diagram into a point table list and displays it to the user for confirmation. By adding a logic verification function before converting the logic diagram into a point table list, the correctness of the configured logic can be ensured, thereby reducing the system malfunction rate and improving the reliability of system operation.

[0017] As a further preferred embodiment of the present invention, in step S4, if loops or conflicts exist in the logic diagram, the point table generation software performs logic verification and optimizes the execution order through a topological sorting algorithm and a conflict detection mechanism, and then prompts the user to modify the logic diagram to ensure that the logic diagram configured by the user is correct. Specifically, the point table generation software uses a topological sorting algorithm to detect loops, uses a conflict detection mechanism to ensure that there are no logical contradictions, and optimizes the execution order to improve efficiency.

[0018] In a preferred embodiment of the present invention, in step S2, the host computer is connected to the power distribution automation terminal via a serial port or communication interface; in step S5, the programming software compiles the point list into PLC firmware and programs it into the memory via a serial port or communication interface. Typically, the programming software supports multiple communication protocols (such as TCP / IP wireless communication) to ensure compatibility with different models of power distribution automation terminals and to prevent communication interruptions during programming, ensuring stable data transmission.

[0019] Compared with the prior art, the present invention has the following advantages:

[0020] (1) This invention applies graphical PLC configuration technology to domestic power distribution automation terminals. The protection logic configuration software supports dynamic logic updates and realizes the visual definition of the operating logic. Users do not need to go into deep programming. They can define and modify the operating logic through the graphical programming interface. Users can modify the logic diagram and rewrite it at any time. It adapts to the diverse needs of complex power systems and is highly flexible. Moreover, the reliability of the logic configuration is ensured by the topology sorting algorithm and conflict detection mechanism. The system malfunction rate is reduced, which can improve the reliability of system operation.

[0021] (2) The present invention can realize the automatic generation of the point table list and the automation of the burning process, and the deployment time is shortened from several hours in the traditional method to several minutes, thereby improving the system deployment efficiency, enhancing user experience and market competitiveness;

[0022] (3) This invention is based on domestically developed hardware and software design. By reducing hardware dependence through software configuration, it improves the adaptability and scalability of distribution automation terminals, while reducing system costs and maintenance expenses. It solves the problems of complex logic configuration, insufficient flexibility and high cost of traditional distribution automation terminals, and promotes the application of domestically produced equipment. With the acceleration of the intelligentization and localization process of power systems, it has broad market prospects, especially in the fields of smart grids and new energy distribution. Attached Figure Description

[0023] Figure 1 This is a logic block diagram of the power distribution automation terminal and host computer provided in a preferred embodiment of the present invention.

[0024] Figure 2 This is a flowchart illustrating the optimized configuration method for power distribution automation terminals provided in a preferred embodiment of the present invention. Detailed Implementation

[0025] like Figure 1-Figure 2 As shown, this method for optimizing the configuration of distribution automation terminals includes the following steps:

[0026] S1. Provide a power distribution automation terminal 1, which has a built-in processor 11 and a non-volatile memory 12;

[0027] S2. Provide a host computer 2 and connect the host computer 2 to the power distribution automation terminal 1. The host computer 2 is equipped with protection logic configuration software 21, point table list generation software 22 and programming software 23. The protection logic configuration software 21 has a graphical programming interface.

[0028] S3. The user drags and drops logic elements (such as AND gate, OR gate, NOT gate, timer, etc.) and connects each logic element in the graphical programming interface of the protection logic configuration software 21. For example, the user defines "when the overcurrent signal (I1) and the voltage abnormal signal (I2) occur at the same time, the circuit breaker trips (O1) after a delay of 5 seconds" to construct the logic diagram 210 for the operation of the power distribution automation terminal 1. The logic diagram 210 can define the logical relationship between input signals (such as voltage, current, and switch status) and output actions (such as circuit breaker tripping and alarm signals).

[0029] S4. The user starts the point table list generation software 22, which converts the logic diagram 210 into a point table list 220. The point table list 220 is stored in MTB format and contains the logical mapping relationship between input signals (such as voltage, current, and switch status) and output actions (such as circuit breaker tripping and alarm signals).

[0030] S5. The programming software 23 compiles the point list 220 into PLC firmware 230 and programs it into the non-volatile memory 12.

[0031] S6. After the programming software 23 is completed, the power distribution automation terminal 1 automatically restarts, the processor 11 automatically loads the PLC firmware 230 in the non-volatile memory 12, collects input signals in real time, and executes protection functions in real time according to the logic mapping therein. For example, when I1 (overcurrent) and I2 (voltage abnormality) meet the conditions at the same time, the processor 11 triggers the delay device according to the logic mapping, and executes O1 (circuit breaker trip) after 5 seconds.

[0032] In this embodiment, the power distribution automation terminal 1 is a domestically produced power distribution automation terminal, and the processor 11 is a domestically produced Fuxi processor.

[0033] In this embodiment, in step S4, the point table generation software 22 converts the logic diagram 210 into a point table list 220, including: (1) parsing the logic diagram 210: identifying the input signals (such as voltage and current signals), output actions (such as trigger actions) and logical relationships (such as AND gates and OR gates) of the logic diagram 210, and extracting each logic element and their connection relationship; (2) generating a point table list 220: converting the parsed logical relationship into a point table list 220 (mtb format), and displaying the logical mapping relationship from input signals to output actions (such as "input I1 AND I2 → output O1").

[0034] In this embodiment, in step S4, before converting the logic diagram 210 into a point table list 220, the point table list generation software 22 automatically verifies the logic diagram 210 to detect whether there are loops or conflicts. If loops or conflicts exist in the logic diagram 210, the point table list generation software 22 uses a topological sorting algorithm to detect loops and a conflict detection mechanism to ensure that there are no logical contradictions. This achieves logic verification and optimizes the execution order to improve efficiency. The software also prompts the user to modify the logic diagram 210 to ensure that the user-configured logic diagram 210 is correct. If there are no loops or conflicts in the logic diagram 210, the point table list generation software 22 converts the logic diagram 210 into a point table list 220 and displays it to the user for confirmation. By adding a logic verification function before converting the logic diagram 210 into a point table list 220, the correctness of the configured logic can be ensured, thereby reducing the system malfunction rate and improving the reliability of system operation.

[0035] In this embodiment, in step S2, the host computer 2 connects to the power distribution automation terminal 1 via a serial port or communication interface; in step S5, the programming software 23 compiles the point list 220 into PLC firmware 230 and programs it into the non-volatile memory 12 via a serial port or communication interface. Typically, the programming software 23 supports multiple communication protocols (such as TCP / IP wireless communication) to ensure compatibility with different models of the power distribution automation terminal 1 and to prevent communication interruptions during the programming process, ensuring stable data transmission.

[0036] Furthermore, it should be noted that the names of the various parts of the specific embodiments described in this specification may differ. All equivalent or simple variations made to the structure, features, and principles of this invention are included within the scope of protection of this invention. Those skilled in the art can make various modifications or additions to the described specific embodiments or use similar methods to replace them, as long as they do not deviate from the structure of this invention or exceed the scope defined by the claims, all of which should fall within the scope of protection of this invention.

Claims

1. A method for optimizing the configuration of distribution automation terminals, comprising the following steps: S1. Provide a power distribution automation terminal, which has a built-in processor and memory; Its features are: It also includes the following steps: S2. Provide a host computer and connect the host computer to the power distribution automation terminal. The host computer is equipped with protection logic configuration software, point table list generation software and programming software. The protection logic configuration software has a graphical programming interface. S3. The user drags and drops logic elements and connects each logic element in the graphical programming interface of the protection logic configuration software to construct the logic diagram of the power distribution automation terminal operation. S4. The user starts the point table list generation software, which converts the logic diagram into a point table list. The point table list contains the mapping relationship between input signals and output actions. Before converting the logic diagram into a point table list, the point table list generation software will automatically verify the logic diagram and detect whether there are loops or conflicts in the logic diagram. If there are loops or conflicts in the logic diagram, the user will be prompted to modify the logic diagram. If there are no loops or conflicts in the logic diagram, the point table list generation software will convert the logic diagram into a point table list and display it to the user for confirmation. The process of converting the logic diagram into a point table list by the point table list generation software includes: (1) parsing the logic diagram: identifying the input signals, output actions and logical relationships of the logic diagram, and extracting each logical element and their logical relationships; (2) generating a point table list: converting the parsed logical relationships into a constructed point table list and displaying the mapping relationship between input signals and output actions. S5. The programming software compiles the point list into PLC firmware and programs it into the memory. S6. The power distribution automation terminal automatically restarts, the processor loads the PLC firmware in the memory, and executes the protection function in real time according to the logic mapping therein.

2. The method for optimizing the configuration of a power distribution automation terminal according to claim 1, characterized in that: The memory is a non-volatile memory.

3. The method for optimizing the configuration of a power distribution automation terminal according to claim 1, characterized in that: In step S4, if there are loops or conflicts in the logic diagram, the point table generation software uses a topology sorting algorithm and a conflict detection mechanism to perform logic verification and optimize the execution order, and then prompts the user to modify the logic diagram to ensure that the logic diagram configured by the user is correct.

4. The method for optimizing the configuration of a power distribution automation terminal according to claim 1, characterized in that: In step S2, the host computer connects to the power distribution automation terminal via a serial port or communication interface; in step S5, the programming software compiles the point list into PLC firmware and programs it into the memory via a serial port or communication interface.

Images