CN-122001094-A - Distribution network automation feeder terminal switching method, system, equipment and medium with fault self-diagnosis

CN122001094ACN 122001094 ACN122001094 ACN 122001094ACN-122001094-A

Abstract

The invention discloses a distribution network automation feeder terminal switching method, a system, equipment and a medium with fault self-diagnosis, wherein the method comprises the steps of collecting original electrical signals through an input interface unit; the method comprises the steps of obtaining intermediate information data through a signal processing module, obtaining an interface type identification result through collecting electrical characteristics through a main control module, carrying out self-adaptive adjustment on the intermediate information data to obtain and output an adaptive signal, collecting and analyzing the digital signal to obtain device running state information, carrying out fault diagnosis by combining the interface type identification result, and triggering an alarm when abnormality is diagnosed. According to the invention, intelligent conversion is realized by integrating multiple interfaces, the problem of incompatibility of equipment interfaces of multiple manufacturers is solved, the complicated operation of on-site equipping of multiple adapters is avoided, the accuracy and stability of cross-over connection signal transmission are ensured, and the operation reliability, operation and maintenance convenience and overall system safety of the device under a complex environment are improved.

Inventors

XIA CHENCONG
CHEN ZILE
HAN RUOBING
Ye Gengsi
ZENG KAI
XIE LEI
LI YANZE
WANG YOUKANG

Assignees

海南电网有限责任公司昌江供电局

Dates

Publication Date: 20260508
Application Date: 20251216

Claims (10)

1. The utility model provides a distribution network automation feeder terminal switching method of area trouble self-diagnosis, characterized by is applied to a switching device, switching device includes integrated input interface unit, signal processing module, main control module and the output interface unit of multiple type interface, includes: Collecting an original electric signal through an input interface unit; converting the original electrical signal into a digital signal through a signal processing module, and processing the digital signal to obtain intermediate information data; Acquiring electrical characteristics of the input interface unit through a main control module, and obtaining an interface type identification result according to the electrical characteristics; according to the interface type identification result, the intermediate information data is adaptively adjusted through the signal processing module to obtain an adapted signal, and the adapted signal is output through the output interface unit; And acquiring and analyzing the digital signals through the main control module to obtain device running state information, carrying out fault diagnosis by combining the interface type identification result, and triggering an alarm when the diagnosis is abnormal.
2. The distribution network automation feeder terminal switching method with fault self-diagnosis as claimed in claim 1, wherein the step of collecting the original electrical signal through the input interface unit comprises: The original electrical signals from feeder terminals of different manufacturers are collected through an input interface unit integrating various types of wired communication interfaces and wireless communication interfaces.
3. A distribution network automation feeder terminal switching method with fault self-diagnosis as claimed in claim 2, wherein the step of processing the digital signal to obtain intermediate information data comprises: Performing signal conditioning and analog-to-digital conversion on the original electrical signal through a signal acquisition unit in the signal processing module to obtain a digital signal; and carrying out protocol analysis on the digital signal by using a plurality of communication protocol analysis chips corresponding to different types of interfaces through a protocol conversion unit in the signal processing module to obtain intermediate information data.
4. A distribution network automation feeder terminal switching method with fault self-diagnosis as claimed in claim 3, wherein the step of obtaining an interface type identification result according to the electrical characteristics comprises: and analyzing the impedance characteristic and the communication signal characteristic of the electrical characteristic by the main control module, and identifying the interface type of the access equipment to obtain an interface type identification result.
5. The distribution network automation feeder terminal switching method with fault self-diagnosis as claimed in claim 4, wherein the step of obtaining and outputting the adapted signal comprises: according to the interface type identification result, performing self-adaptive adjustment on the physical transmission characteristics of the intermediate information data through a signal adaptation unit in the signal processing module to generate an adapted signal; And outputting the adapted signal through the output interface unit.
6. The distribution network automation feeder terminal switching method with fault self-diagnosis as claimed in claim 5, wherein the step of obtaining the device operation state information comprises: And acquiring and analyzing the transmission quality of the digital signal, the connection state of the input interface unit and the working state parameter of at least one of the signal processing module and the main control module through the main control module to obtain the running state information of the device.
7. The distribution network automation feeder terminal switching method with fault self-diagnosis as claimed in claim 6, wherein the step of performing fault diagnosis on the interface type identification result and the device operation state information and triggering an alarm when abnormality is diagnosed comprises: presetting an abnormal condition, and judging whether at least one of the connection state of the input interface unit, the transmission quality of the digital signal or the working state parameter meets the preset abnormal condition according to the running state information of the device; And when the abnormal condition is met, judging that the diagnosis is abnormal, and triggering an alarm action.
8. A distribution network automated feeder terminal switching system with fault self-diagnosis, applying the method of any of claims 1-7, comprising: The interface module comprises an input interface unit and an output interface unit, wherein the input interface unit is integrated with a plurality of types of wired communication interfaces and wireless communication interfaces and is used for acquiring original electric signals, and the output interface unit is used for outputting the signals after adaptation; The signal processing module is connected with the interface module and is used for converting an original electric signal into a digital signal, carrying out protocol analysis on the digital signal to obtain intermediate information data, and carrying out self-adaptive adjustment on the intermediate information data to obtain an adapted signal; the main control module is connected with the interface module and the signal processing module and is used for collecting the electrical characteristics of the input interface unit and obtaining an interface type identification result, collecting and analyzing the digital signals to obtain the running state information of the device, and carrying out fault diagnosis and alarm by combining the interface type identification result.
9. An electronic device, comprising: A memory and a processor; The memory is configured to store computer executable instructions, and the processor is configured to execute the computer executable instructions, which when executed by the processor, implement the steps of the distribution network automation feeder terminal switching method with fault self-diagnosis of any one of claims 1 to 7.
10. A computer readable storage medium storing computer executable instructions which when executed by a processor perform the steps of the distribution network automated feeder terminal switching method with fault self-diagnosis of any one of claims 1 to 7.

Description

Distribution network automation feeder terminal switching method, system, equipment and medium with fault self-diagnosis Technical Field The invention relates to the technical field of power distribution automation, in particular to a method, a system, equipment and a medium for switching a distribution network automation feeder terminal with fault self-diagnosis. Background In a distribution network automation system of 40.5kV or below, an automation feeder terminal is used as key equipment for realizing real-time monitoring of line state, rapid fault positioning and remote control, and is required to perform efficient and reliable data interaction and collaborative operation with a pole-mounted circuit breaker, a load switch and a master station system. However, in the actual construction of the distribution network, because the physical interfaces, the electrical specifications and the communication protocols adopted by the automation feeder terminals from different equipment manufacturers are different, there is a situation that multiple interface systems such as RS232, RS485, ethernet, optical fibers and wireless communication coexist and are mutually incompatible, and the fragmented interface standards lead to the fact that the equipment of different manufacturers cannot be directly interconnected for communication, thus severely restricting the overall integration efficiency, the operation and maintenance flexibility and the collaborative capability of the cross-manufacturer equipment of the distribution automation system. For the problem of interface incompatibility, common solution is to use a one-to-one special physical adapter, namely each adapter can only realize the conversion between two specific interface types, but when the system is integrated and operated and maintained on site, a plurality of adapters are required to be equipped for different interface combinations, so that the equipment purchasing and inventory management cost is increased, the problems of complex interface matching, low replacement efficiency and the like are brought about when the site is constructed, the quick deployment and fault recovery are not facilitated, the traditional adapter has single function and lacks signal recognition and adaptation capability, and when the characteristics of level signals, signal transmission rate, current driving capability and the like of different interfaces are different, signal attenuation, distortion or transmission errors are easily caused, the real-time performance and accuracy of data interaction are influenced, and potential threat is formed to the safe and reliable operation of a power distribution system. Disclosure of Invention The present invention has been made in view of the above-described problems occurring in the prior art. Therefore, the invention provides a distribution network automation feeder terminal switching method, system, equipment and medium with fault self-diagnosis, which solve the problems that the existing scheme adopts a one-to-one special adapter, needs to be provided with various models, has high interface cost, complex matching, low operation and maintenance efficiency, lacks intelligent signal adaptation capability, is easy to cause signal attenuation or transmission errors under different characteristic differences, and influences the real-time performance, accuracy and reliability of data interaction. In order to solve the technical problems, the invention provides the following technical scheme: In a first aspect, the present invention provides a method for switching an automatic feeder terminal of a distribution network with fault self-diagnosis, which is applied to a switching device, where the switching device includes an input interface unit, a signal processing module, a main control module and an output interface unit that integrate multiple types of interfaces, and the method includes: Collecting an original electric signal through an input interface unit; converting the original electrical signal into a digital signal through a signal processing module, and processing the digital signal to obtain intermediate information data; Acquiring electrical characteristics of the input interface unit through a main control module, and obtaining an interface type identification result according to the electrical characteristics; according to the interface type identification result, the intermediate information data is adaptively adjusted through the signal processing module to obtain an adapted signal, and the adapted signal is output through the output interface unit; And acquiring and analyzing the digital signals through the main control module to obtain device running state information, carrying out fault diagnosis by combining the interface type identification result, and triggering an alarm when the diagnosis is abnormal. As a preferable scheme of the distribution network automation feeder terminal switching method with fault self-diagnosis,