AI-based intelligent fusion terminal fault real-time diagnosis system

Abstract

This invention discloses an AI-based intelligent fusion terminal fault real-time diagnosis system, comprising: an intelligent fusion terminal installed in a corresponding transformer area and intelligent circuit breaker structures installed at the ends of each line branch within the transformer area; the intelligent fusion terminal includes a line branch fault detection module, which controls the intelligent circuit breaker structures to perform opening and closing operations, collects and calculates the reference resistance-to-inductance ratio and reference phase difference when the line branch is normal as a comparison benchmark, then periodically or as needed collects the resistance-to-inductance ratio and the phase difference to be detected for the line branch, and finally determines whether poor contact has occurred in the line branch based on the comparison results between the resistance-to-inductance ratio and the phase difference to be detected and the reference resistance-to-inductance ratio and the reference phase difference. This invention can promptly detect poor contact problems in line branches, achieving early warning of contact faults, preventing problems before they occur, and avoiding greater losses caused by the continued development of faults.

Description

Technical Field

[0001] This invention relates to the field of power equipment, and in particular to an AI-based intelligent fusion terminal fault real-time diagnosis system. Background Technology

[0002] Low-voltage distribution transformer substations are the final point of contact between the power system and users, and their operational status directly affects power supply reliability and power quality. Line connection points within these substations (such as meter box terminals, circuit breaker contacts, and cable joints) are susceptible to oxidation, corrosion, and vibration due to their long-term outdoor operation, leading to increased contact resistance and potential contact defects. If these defects are not detected in time, they can cause continuous overheating and insulation aging at the connection points, ultimately resulting in equipment burnout or even fires, posing a serious threat to power grid safety and the safety of users' lives and property.

[0003] Currently, the detection of contact faults in low-voltage distribution areas mainly relies on the following methods: 1. Manual inspection and infrared thermography: Maintenance personnel regularly inspect the power distribution facilities and use infrared thermal imagers to detect abnormal temperatures at connection points. This method is inefficient, costly, and cannot achieve real-time monitoring. Infrared thermography is easily affected by environmental interference and can only be detected when the contact resistance increases to a certain extent and generates significant heat, failing to provide early warning and essentially being a passive, reactive strategy. 2. Methods based on steady-state electrical quantity monitoring: Existing intelligent integrated terminals for distribution areas have the function of collecting and monitoring steady-state parameters such as voltage and current RMS values. Alarms are issued for events such as overcurrent and voltage anomalies by setting thresholds. However, this method has the following drawbacks: Insufficient sensitivity: In the early stages of a fault, increased contact resistance causes millivolt-level voltage drop changes and weak thermal effects, which are far smaller than the voltage and current changes caused by normal load fluctuations in the power grid and are easily overlooked by RMS monitoring. False alarms and missed alarms: Fluctuations in steady-state quantities are greatly affected by changes in load type (such as the starting of high-power motors). The system cannot distinguish between minor changes caused by the user adding a resistive load or by an increase in line contact resistance, resulting in poor specificity and a tendency to generate false alarms or missed alarms.

[0004] In summary, the common flaw of existing technologies lies in their "lag": most of them are dedicated to identifying and alerting when a fault has already occurred or has developed to the middle or late stages, rather than predicting and intervening in the early stages of potential problems, which leads to greater losses. Summary of the Invention

[0005] In view of the aforementioned deficiencies of the prior art, the technical problem to be solved by the present invention is to provide an AI-based intelligent fusion terminal fault real-time diagnosis system, which aims to promptly detect poor contact problems in line branches and avoid greater losses caused by the continued development of poor contact faults.

[0006] To achieve the above objectives, this invention provides an AI-based intelligent fusion terminal fault real-time diagnosis system. The system includes: an intelligent fusion terminal installed in a corresponding transformer area and intelligent circuit breaking structures installed at the ends of each line branch within the transformer area. The intelligent fusion terminal includes a line branch fault detection module, which includes: a first circuit breaking trigger unit, a reference data acquisition unit, a reference parameter establishment unit, a second circuit breaking trigger unit, a daily data acquisition unit, a daily parameter calculation unit, and a comparison detection unit.

[0007] The first circuit breaker triggering unit is used to control the intelligent circuit breaker structure corresponding to each line branch to complete a circuit break and connection operation to generate a circuit breaker of a first duration after the transformer area is put into operation or overhauled and it is confirmed that each line branch is well connected; wherein, the first duration is determined according to the shortest power supply holding time of the load in the line branch.

[0008] The reference data acquisition unit is used to acquire the reference voltage change and reference current change of each of the line branches during the operation of the first circuit breaker triggering unit.

[0009] The reference parameter establishment unit is used to obtain the reference resistance-inductance ratio and the reference phase difference based on the changes in each reference voltage and each reference current, and to store the reference resistance-inductance ratio and the reference phase difference in a database; wherein, the reference resistance-inductance ratio is the ratio of the fundamental resistance to the fundamental reactance, and the reference phase difference is the phase difference between the corresponding reference voltage and the reference current;

[0010] The second circuit breaker triggering unit is used to periodically or in response to detection requirements to control the intelligent circuit breaker structure corresponding to each of the line branches to complete a switching operation to generate a circuit breaker of the first duration.

[0011] The daily data acquisition unit is used to collect the voltage change and current change of each line branch during the operation of the second circuit breaker triggering unit.

[0012] The daily parameter calculation unit is used to calculate the resistance-inductance ratio and phase difference of each of the line branches based on the change in voltage to be detected and the change in current to be detected.

[0013] The comparison detection unit is used to compare the resistance-inductance ratio to be detected and the phase difference to be detected with the reference resistance-inductance ratio and the reference phase difference, and to determine whether there is poor contact in the corresponding line branch based on the comparison result.

[0014] Optionally, the intelligent circuit breaker structure includes two circuit breakers connected in parallel, one of which is in an open state and the other is in a closed state; the first closing time corresponding to the closing process of the circuit breaker is greater than the first opening time corresponding to the opening process; when the intelligent circuit breaker structure receives a command corresponding to the opening and closing operation, it simultaneously closes the circuit breaker in the open state and opens the circuit breaker in the closed state, so that the first circuit breaking time of the intelligent circuit breaker structure when performing the opening and closing operation is less than the first opening time.

[0015] Optionally, the reference parameter establishment unit is specifically used for:

[0016] Based on the changes in each reference voltage and each reference current, the fundamental impedance amplitude and the reference phase difference corresponding to each of the line branches are obtained.

[0017] Based on the fundamental impedance amplitude and the reference phase difference, the fundamental resistance and fundamental reactance of each line branch are obtained, and the ratio of the fundamental resistance and fundamental reactance is used as the reference resistance-inductance ratio.

[0018] The reference resistance-to-inductance ratio and the reference phase difference are stored in the database.

[0019] Optionally, the fundamental impedance amplitude, the fundamental resistance, and the fundamental reactance difference satisfy:

[0020]

[0021] in, The fundamental impedance amplitude, The change in the reference voltage. The change in the reference current. The fundamental frequency resistance, For the fundamental reactance, The reference phase difference is given.

[0022] Optionally, the daily parameter calculation unit is specifically used for:

[0023] Based on the changes in the voltage to be detected and the changes in the current to be detected, the amplitude of the impedance to be detected and the phase difference to be detected for each of the line branches are obtained.

[0024] Based on the amplitude of the impedance to be detected and the phase difference to be detected, the resistance and reactance to be detected for each of the line branches are calculated; based on the resistance and reactance to be detected, the resistance-to-inductance ratio to be detected is obtained.

[0025] Optionally, the comparison detection unit is specifically used for:

[0026] The resistance-inductance ratio to be detected and the phase difference to be detected are compared with the reference resistance-inductance ratio and the reference phase difference;

[0027] If the difference between the resistance-inductance ratio to be detected and the reference resistance-inductance ratio is less than a first threshold, and the difference between the phase difference to be detected and the reference phase difference is less than a first threshold, then the line branch is judged to be normal; otherwise, the line branch is judged to have poor contact; wherein, poor contact is a precursor to a fault.

[0028] Optionally, the line branch fault detection module further includes: a reconfirmation unit;

[0029] The reconfirmation unit is used to regenerate the detection cycle of the line branch in response to the poor contact of the line branch, so that the second circuit breaker trigger unit shortens the detection interval of the line branch, thereby obtaining multiple comparison results within a first preset time period; in response to a preset number of comparison results being poor contact among the multiple comparison results, the poor contact of the line branch is determined, and a maintenance command is issued.

[0030] Optionally, the time or period for the second circuit breaker triggering unit to control the intelligent circuit breaker structure to perform switching operations in each of the line branches is determined according to the power consumption fluctuations of each of the line branches; wherein, the second circuit breaker triggering unit performs switching operations during off-peak hours.

[0031] The beneficial effects of this invention are as follows: 1. By actively monitoring the change in the ratio of the resistive component to the fundamental reactance component in the line impedance, this invention can detect minute increases in contact resistance at the micro-ohm level. This change occurs much earlier than phenomena such as voltage RMS exceeding limits, significant temperature increases, or partial discharge, which are relied upon by traditional methods. This significantly advances the fault detection time from "post-event repair" to "pre-event warning," completely changing the passive response maintenance mode and effectively avoiding equipment burnout and fire accidents caused by poor contact, thus greatly improving the safe operation level of the distribution network. 2. Using a single circuit breaker for opening and closing operations can lead to a circuit breaker time exceeding the minimum power supply holding time of the load in the line branch, thus affecting the normal use of the load. Therefore, the intelligent circuit breaker structure of this invention uses two parallel circuit breakers to perform opening and closing operations. By utilizing the time difference between the closing and opening operations, a new circuit breaker time shorter than the first opening time is formed, thereby shortening the circuit breaker time and ensuring that the circuit breaker time is less than the minimum power supply holding time, reducing the impact on load use and thus avoiding affecting users. 3. This invention, by actively controlling the downstream load to trip, performs measurements under no-load conditions, fundamentally eliminating the influence of major interference sources such as load fluctuations and changes in load type on the measurement results. By analyzing the specific indicators of the changing trends of the impedance ratio and phase angle, rather than a single impedance amplitude, it can clearly distinguish between the increase in the line resistance itself and changes in the downstream load, thereby ensuring high accuracy and reliability of the early warning results and greatly reducing the false alarms and missed alarms caused by interference in traditional monitoring methods.

[0032] In summary, this invention can promptly detect poor contact problems in line branches, achieving early warning of contact faults, preventing problems before they occur, and avoiding greater losses caused by the continued development of faults. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the structure of an AI-based intelligent fusion terminal fault real-time diagnosis system provided in a specific embodiment of the present invention;

[0034] Figure 2 This is a schematic diagram of the structure of a line branch fault detection module provided in a specific embodiment of the present invention. Detailed Implementation

[0035] This invention discloses an AI-based intelligent fusion terminal fault real-time diagnosis system. Those skilled in the art can refer to the content of this document and appropriately improve the technical details. It is particularly important to note that all similar substitutions and modifications are obvious to those skilled in the art and are considered to be included in this invention. The apparatus and application of this invention have been described through preferred embodiments. Those skilled in the art can obviously make modifications or appropriate alterations and combinations to the apparatus and application described herein without departing from the content, spirit, and scope of this invention to implement and apply the technology of this invention.

[0036] The applicant's research found that the common defect of existing technologies in line fault detection is their "lag": most of them are committed to identifying and alarming when the fault has already occurred or has developed to the middle or late stage, rather than predicting and intervening in the early stage of potential problems, which leads to greater losses.

[0037] Therefore, embodiments of the present invention provide an AI-based intelligent fusion terminal fault real-time diagnosis system, such as... Figure 1 As shown, the intelligent fusion terminal 101 is installed in the corresponding transformer area, and the intelligent circuit breaker structure 103 is installed at the end of each line branch 102 in the transformer area; the intelligent fusion terminal 101 includes a line branch 102 fault detection module, such as... Figure 2 As shown, the fault detection module for line branch 102 includes: a first circuit breaker triggering unit 201, a reference data acquisition unit 202, a reference parameter establishment unit 203, a second circuit breaker triggering unit 204, a daily data acquisition unit 205, a daily parameter calculation unit 206, and a comparison detection unit 207. Figure 1 In the diagram, 104 is the user terminal, and the power supply at the end of the line branch 102 is delivered to the user terminal 104.

[0038] The first circuit breaker triggering unit 201 is used to control the intelligent circuit breaker structure 103 corresponding to each line branch 102 to complete a circuit break operation and generate a circuit breaker of the first duration after the transformer area is put into operation or overhauled and it is confirmed that each line branch 102 is well connected. The first duration is determined according to the shortest power supply holding time of the load in the line branch 102.

[0039] The reference data acquisition unit 202 is used to acquire the reference voltage change and reference current change of each line branch 102 during the operation of the first circuit breaker triggering unit 201.

[0040] The reference parameter establishment unit 203 is used to obtain the reference resistance-inductance ratio and the reference phase difference based on the changes in each reference voltage and the changes in each reference current, and to store the reference resistance-inductance ratio and the reference phase difference in the database; wherein, the reference resistance-inductance ratio is the ratio of the fundamental resistance to the fundamental reactance, and the reference phase difference is the phase difference between the corresponding reference voltage and the reference current.

[0041] The second circuit breaker triggering unit 204 is used to periodically or in response to detection requirements to control the intelligent circuit breaker structure 103 corresponding to each line branch 102 to complete a single opening and closing operation to generate a circuit breaker of the first duration.

[0042] The daily data acquisition unit 205 is used to collect the changes in the voltage and current to be detected in each line branch 102 during the operation of the second circuit breaker triggering unit 204.

[0043] The daily parameter calculation unit 206 is used to calculate the resistance-inductance ratio and phase difference of each line branch 102 based on the changes in the voltage and current to be detected.

[0044] The comparison detection unit 207 is used to compare the resistance-inductance ratio and the phase difference to be detected with the reference resistance-inductance ratio and the reference phase difference, and to determine whether there is poor contact in the corresponding line branch 102 based on the comparison result.

[0045] It should be noted that this embodiment of the invention monitors the changes in the resistive and inductive components of the line impedance, particularly the dynamic characteristics of their ratio (phase angle), rather than focusing solely on the impedance amplitude (Z) in the traditional approach. This allows for the effective detection of minute increases in contact resistance at the micro-ohm level, enabling timely detection of poor contact and preventing the fault from escalating and causing greater losses. The intelligent circuit breaker structure 103 in this embodiment effectively eliminates the influence of the load at the end of the line on the resistive and inductive components, thereby improving the accuracy of detection.

[0046] In this specific embodiment, the fault detection module of line branch 102 and the intelligent circuit breaker structure 103 are connected by communication, including wired and wireless connections. Both the fault detection module of line branch 102 and the intelligent circuit breaker structure 103 have independent power supplies.

[0047] In this specific embodiment, the intelligent circuit breaker structure 103 includes two circuit breakers connected in parallel, one of which is in an open state and the other is in a closed state; the first closing time corresponding to the closing process of the circuit breaker is greater than the first opening time corresponding to the opening process; when the intelligent circuit breaker structure 103 receives the corresponding instruction for the opening and closing operation, it simultaneously closes the circuit breaker in the open state and opens the circuit breaker in the closed state, so that the first circuit breaking time of the intelligent circuit breaker structure 103 when performing the opening and closing operation is less than the first opening time.

[0048] It should be noted that the interruption time generated by the sequential opening and closing operations of a typical circuit breaker will exceed the minimum power holding time of the load in line branch 102, thus affecting the normal operation of the load. To avoid this situation, this embodiment of the invention provides an intelligent circuit breaking structure 103 with two circuit breakers connected in parallel. Based on the time difference between the closing and opening operations, a new interruption time is formed. This new interruption time effectively shortens the interruption time generated by the opening and closing operations of a single circuit breaker, thereby ensuring that the new interruption time is less than the minimum power holding time and guaranteeing the normal operation of the load electrical appliances.

[0049] It is worth noting that the circuit breaker generally does not disconnect instantaneously during the disconnection operation; therefore, the operation time for the disconnection operation is longer than the disconnection time. Similarly, the circuit breaker does not close instantaneously during the closing operation. This mechanism further shortens the disconnection time of the intelligent circuit breaker structure 103 in this embodiment of the invention.

[0050] Furthermore, the circuit breaker can be a magnetic latching relay.

[0051] In this specific embodiment, the reference parameter establishment unit 203 is specifically used for:

[0052] Based on the changes in each reference voltage and each reference current, the fundamental impedance amplitude and reference phase difference corresponding to each line branch 102 are obtained.

[0053] Based on the fundamental impedance amplitude and the reference phase difference, the fundamental resistance and fundamental reactance of each line branch 102 are obtained, and the ratio of the fundamental resistance and fundamental reactance is used as the reference resistance-inductance ratio.

[0054] Store the reference resistance-to-inductance ratio and the reference phase difference in the database.

[0055] Furthermore, the fundamental impedance amplitude, fundamental resistance, and fundamental reactance difference satisfy:

[0056]

[0057] in, This represents the fundamental impedance amplitude. The change in reference voltage. The reference current change For fundamental frequency resistance, For fundamental frequency reactance, This is the reference phase difference.

[0058] It should be noted that the reference phase difference can be obtained through the changes in the reference voltage and reference current.

[0059] In this specific embodiment, the daily parameter calculation unit 206 is specifically used for:

[0060] Based on the changes in each voltage and current to be detected, the amplitude of the impedance to be detected and the phase difference to be detected corresponding to each line branch 102 are obtained.

[0061] Based on the amplitude of the impedance to be tested and the phase difference to be tested, the resistance and reactance to be tested corresponding to each line branch 102 are calculated; based on the resistance and reactance to be tested, the resistance-inductance ratio to be tested is obtained.

[0062] In this specific embodiment, the comparison detection unit 207 is specifically used for:

[0063] The resistance-inductance ratio and phase difference to be detected are compared with the reference resistance-inductance ratio and reference phase difference;

[0064] If the difference between the resistance ratio to be tested and the reference resistance ratio is less than the first threshold, and the difference between the phase difference to be tested and the reference phase difference is less than the first threshold, then the line branch 102 is judged to be normal; otherwise, the line branch 102 is judged to have poor contact; where poor contact is a precursor to a fault.

[0065] In this specific embodiment, the fault detection module for line branch 102 further includes: a reconfirmation unit;

[0066] The reconfirmation unit is used to regenerate the detection cycle of line branch 102 in response to poor contact in line branch 102, so that the second circuit breaker triggering unit 204 shortens the detection interval of line branch 102, thereby obtaining multiple comparison results within a first preset time period; in response to a preset number of comparison results being poor contact among the multiple comparison results, it is determined that poor contact has occurred in line branch 102, and a maintenance command is issued.

[0067] It should be noted that the present invention, by setting up a reconfirmation unit, obtains multiple comparison results after an anomaly, thereby repeatedly confirming poor contact and eliminating short-term interference from other factors, so as to ensure the accuracy and reliability of the results.

[0068] In this specific embodiment, the time or period for the second circuit breaker triggering unit 204 to control the intelligent circuit breaker structure 103 to perform the switching and closing operations in each line branch 102 is determined according to the power consumption fluctuation of each line branch 102; wherein, the second circuit breaker triggering unit 204 performs the switching and closing operations during the power consumption off-peak hours.

[0069] It should be noted that performing testing during off-peak hours can, firstly, avoid affecting normal electricity use, and secondly, reduce the impact of excessive electricity consumption on testing due to overheating, overload, and other issues.

[0070] This invention, through active monitoring of the ratio of resistive to fundamental reactance components in line impedance, can detect minute increases in contact resistance at the micro-ohm level. This change occurs much earlier than traditional methods rely on phenomena such as exceeding effective voltage limits, significant temperature increases, or partial discharge. This significantly advances fault detection from "post-incident repair" to "pre-incident warning," completely changing the reactive maintenance model and effectively preventing equipment burnout and fires caused by poor contact, thus greatly improving the safety of the power distribution network.

[0071] Using a single circuit breaker for opening and closing operations can lead to a circuit breaker time exceeding the minimum power holding time for the load in line branch 102, thus affecting the normal operation of the load. Therefore, the intelligent circuit breaker structure 103 of this embodiment uses two parallel circuit breakers to perform opening and closing operations. By utilizing the time difference between the closing and opening operations, a new circuit breaker time shorter than the first opening time is formed, thereby shortening the circuit breaker time and ensuring it is less than the minimum power holding time. This reduces the impact on load operation and avoids affecting users.

[0072] This invention, by actively controlling the downstream load to trip, performs measurements under no-load conditions, fundamentally eliminating the influence of major interference sources such as load fluctuations and changes in load type on the measurement results. By analyzing the specific indicators of the changing trends in the impedance ratio and phase angle, rather than simply the impedance amplitude, it can clearly distinguish between increases in the line's own resistance and changes in the downstream load, thus ensuring high accuracy and reliability of the early warning results and greatly reducing the false alarms and missed alarms caused by interference in traditional monitoring methods.

[0073] In summary, the embodiments of the present invention can promptly detect poor contact problems in line branch 102, realize early warning of contact faults, prevent problems before they occur, and avoid greater losses caused by the continued development of faults.

[0074] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0075] The various embodiments in this specification are described in a related manner. Similar or identical parts between embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions of the method embodiments.

[0076] The above are merely preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention are included within the scope of protection of the present invention.

Claims

1. A real-time fault diagnosis system for an AI-based intelligent fusion terminal, characterized in that, The system includes: an intelligent fusion terminal set in the corresponding transformer area and an intelligent circuit breaker structure set at the end of each line branch in the transformer area; the intelligent fusion terminal includes a line branch fault detection module, which includes: a first circuit breaker triggering unit, a reference data acquisition unit, a reference parameter establishment unit, a second circuit breaker triggering unit, a daily data acquisition unit, a daily parameter calculation unit, and a comparison detection unit; The first circuit breaker triggering unit is used to control the intelligent circuit breaker structure corresponding to each line branch to complete a circuit break and connection operation to generate a circuit breaker of a first duration after the transformer area is put into operation or overhauled and it is confirmed that each line branch is well connected; wherein, the first duration is determined according to the shortest power supply holding time of the load in the line branch. The reference data acquisition unit is used to acquire the reference voltage change and reference current change of each of the line branches during the operation of the first circuit breaker triggering unit. The reference parameter establishment unit is used to obtain the reference resistance-inductance ratio and the reference phase difference based on the changes in each reference voltage and each reference current, and to store the reference resistance-inductance ratio and the reference phase difference in a database; wherein, the reference resistance-inductance ratio is the ratio of the fundamental resistance to the fundamental reactance, and the reference phase difference is the phase difference between the corresponding reference voltage and the reference current; The second circuit breaker triggering unit is used to periodically or in response to detection requirements to control the intelligent circuit breaker structure corresponding to each of the line branches to complete a switching operation to generate a circuit breaker of the first duration. The daily data acquisition unit is used to collect the voltage change and current change of each line branch during the operation of the second circuit breaker triggering unit. The daily parameter calculation unit is used to calculate the resistance-inductance ratio and phase difference of each of the line branches based on the change in voltage to be detected and the change in current to be detected. The comparison detection unit is used to compare the resistance-inductance ratio to be detected and the phase difference to be detected with the reference resistance-inductance ratio and the reference phase difference, and to determine whether there is poor contact in the corresponding line branch based on the comparison result.

2. The AI-based intelligent fusion terminal fault real-time diagnosis system according to claim 1, characterized in that, The intelligent circuit breaker structure includes two circuit breakers connected in parallel, one of which is in an open state and the other is in a closed state; the first closing time corresponding to the closing process of the circuit breaker is greater than the first opening time corresponding to the opening process. When the intelligent circuit breaker receives a command corresponding to the opening and closing operation, it simultaneously closes the circuit breaker in the open state and opens the circuit breaker in the closed state. As a result, the first duration of the circuit breaker when the intelligent circuit breaker performs the opening and closing operation is less than the first duration of the circuit breaker opening.

3. The AI-based intelligent fusion terminal fault real-time diagnosis system according to claim 1, characterized in that, The reference parameter establishment unit is specifically used for: Based on the changes in each reference voltage and each reference current, the fundamental impedance amplitude and the reference phase difference corresponding to each of the line branches are obtained. Based on the fundamental impedance amplitude and the reference phase difference, the fundamental resistance and fundamental reactance of each line branch are obtained, and the ratio of the fundamental resistance and fundamental reactance is used as the reference resistance-inductance ratio. The reference resistance-to-inductance ratio and the reference phase difference are stored in the database.

4. The AI-based intelligent fusion terminal fault real-time diagnosis system according to claim 3, characterized in that, The fundamental impedance amplitude, the fundamental resistance, and the fundamental reactance difference satisfy the following: in, The fundamental impedance amplitude, The change in the reference voltage. The change in the reference current. The fundamental frequency resistance, For the fundamental reactance, The reference phase difference is given.

5. The AI-based intelligent fusion terminal fault real-time diagnosis system according to claim 1, characterized in that, The daily parameter calculation unit is specifically used for: Based on the changes in the voltage to be detected and the changes in the current to be detected, the amplitude of the impedance to be detected and the phase difference to be detected for each of the line branches are obtained. Based on the amplitude of the impedance to be detected and the phase difference to be detected, the resistance and reactance to be detected for each of the line branches are calculated; based on the resistance and reactance to be detected, the resistance-to-inductance ratio to be detected is obtained.

6. The AI-based intelligent fusion terminal fault real-time diagnosis system according to claim 1, characterized in that, The comparison detection unit is specifically used for: The resistance-inductance ratio to be detected and the phase difference to be detected are compared with the reference resistance-inductance ratio and the reference phase difference; When the difference between the resistance-inductance ratio to be detected and the reference resistance-inductance ratio is less than a first threshold, and the difference between the phase difference to be detected and the reference phase difference is less than a first threshold, the line branch is determined to be normal. Otherwise, it is determined that there is poor contact in the line branch; poor contact is a precursor to a fault.

7. The AI-based intelligent fusion terminal fault real-time diagnosis system according to claim 1, characterized in that, The line branch fault detection module also includes: a reconfirmation unit; The reconfirmation unit is used to regenerate the detection cycle of the line branch in response to the poor contact of the line branch, so that the second circuit breaker trigger unit shortens the detection interval of the line branch, thereby obtaining multiple comparison results within a first preset time period; in response to a preset number of comparison results being poor contact among the multiple comparison results, the poor contact of the line branch is determined, and a maintenance command is issued.

8. The AI-based intelligent fusion terminal fault real-time diagnosis system according to claim 1, characterized in that, The time or period for the second circuit breaker triggering unit to control the intelligent circuit breaker structure to perform opening and closing operations in each of the line branches is determined according to the power consumption fluctuations of each of the line branches; wherein, the second circuit breaker triggering unit performs opening and closing operations during off-peak hours.

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