Fault early warning method and system of alternating current and direct current integrated power supply for intelligent station

Abstract

The invention discloses a fault early warning method and system for an AC / DC integrated power supply for an intelligent station, and the system comprises a data collection module, a corrosion aging influence analysis module, and a fault early warning opportunity calculation module. The data acquisition module is suitable for acquiring related data of AC / DC integrated power supply equipment in a coastal area, and the corrosion and aging influence analysis module is used for analyzing influence data of corrosion and aging of the AC / DC integrated power supply equipment in the coastal area. The fault early warning opportunity calculation module is used for analyzing and predicting the fault early warning opportunity of the AC / DC integrated power supply equipment, the data acquisition module, the corrosion aging influence analysis module and the fault early warning opportunity calculation module are in communication connection with one another, and the AC / DC integrated power supply equipment fault early warning system has the advantages of being high in fault early warning precision and good in economic benefit.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent monitoring of power supply systems, and in particular to a fault early warning method and system for an AC / DC integrated power supply for an intelligent station. Background Art

[0002] With the widespread application of power systems in special environments such as coastal areas, AC / DC integrated power supplies have gradually become the core equipment for power supply for smart stations. However, the humidity and salt content in coastal air are high, posing a serious threat to the long-term operation of equipment. For example, the synergistic effect of salt spray and humidity significantly accelerates the electrochemical corrosion of metal parts, resulting in increased contact resistance, increased leakage current, and even short circuits. However, in the prior art, early warning is mostly carried out by directly monitoring humidity and salt concentration. However, since corrosion is a slow process, direct monitoring is difficult to reflect the real risk of equipment failure in a timely manner, and the deployment of independent sensor monitoring systems requires high costs, which is not conducive to large-scale promotion. Therefore, it is very necessary to design a fault warning method and system for AC / DC integrated power supplies for smart stations with high fault warning accuracy and good economic benefits. Summary of the invention

[0003] The object of the present invention is to provide a fault warning method and system for an AC / DC integrated power supply for an intelligent station, so as to solve the problems raised in the above-mentioned background technology.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions: a fault warning method and system for an AC / DC integrated power supply for an intelligent station, comprising a data acquisition module, a corrosion and aging impact analysis module and a fault warning timing calculation module, wherein the data acquisition module is suitable for collecting relevant data of AC / DC integrated power supply equipment in coastal areas, the corrosion and aging impact analysis module is used to analyze the impact data of corrosion and aging on the AC / DC integrated power supply equipment in coastal areas, and the fault warning timing calculation module is used to analyze and predict the timing of fault warning of the AC / DC integrated power supply equipment, and the data acquisition module, the corrosion and aging impact analysis module and the fault warning timing calculation module are communicatively connected to each other.

[0005] According to the above technical solution, the data acquisition module includes a coastline data monitoring module, an equipment data acquisition module and an environment acquisition module. The coastline data monitoring module is used to monitor the coastline wave height and sea surface height data at the coastline of the area where the AC / DC integrated power supply equipment is located. The equipment data acquisition module is used to collect equipment data of the AC / DC integrated power supply equipment. The environment acquisition module is used to collect environmental wind speed and sea and land wind direction data of the area where the AC / DC integrated power supply equipment is located.

[0006] According to the above technical scheme, the corrosion and aging impact analysis module includes a salt spray intensity index output module, a primary impact judgment module, a secondary impact judgment module and a comparative judgment module. The salt spray intensity index output module is used to analyze and calculate the salt spray intensity index at the monitored coastline. The primary impact judgment module, the secondary impact judgment module and the comparative judgment module are all communicatively connected to the salt spray intensity index output module. The primary impact judgment module is used to analyze and judge the AC / DC integrated power supply equipment affected by primary corrosion and aging. The secondary impact judgment module is used to analyze and judge the AC / DC integrated power supply equipment affected by secondary corrosion and aging. The comparative judgment module is used to compare the equipment component experimental database data to judge the AC / DC integrated power supply equipment severely affected by salt spray.

[0007] According to the above technical solution, the fault warning timing calculation module includes a reference aging speed output module, a time axis marking module, a corrosion aging impact calculation module and a warning judgment module. The reference aging speed output module is used to statistically output the aging rate of each component of the AC / DC integrated power supply device, the time axis marking module is used to mark the service life of each component based on the time axis, the corrosion aging impact calculation module is used to analyze and calculate the effective service life of the AC / DC integrated power supply device after being affected by salt spray, and the pre-preg judgment module is used to judge the timing of the fault warning based on the analysis and calculation results.

[0008] According to the above technical solution, the equipment data acquisition module further includes a positioning submodule and an equipment component experimental database, the positioning submodule is used to locate the position of the AC / DC integrated power supply equipment, and the equipment component experimental database is used to statistically store the historical corrosion and aging experimental data of each component of the AC / DC integrated power supply equipment.

[0009] According to the above technical solution, the fault warning method of the AC / DC integrated power supply for intelligent station, the fault warning method of the AC / DC integrated power supply for intelligent station comprises the following steps:

[0010] Step S1: First, the data acquisition module is used to collect monitoring data of the coastline, data of equipment deployed in the coastal area, and environmental data, wherein the equipment data includes equipment positioning information and equipment historical aging test data, and the environmental data mainly includes sea and land wind direction and wind speed values ​​in the coastal area;

[0011] Step S2: Acquire the collected coastline monitoring data, analyze the corrosion and aging influencing factors according to the coastline monitoring data, and classify the corrosion and aging impact level of each AC / DC integrated power supply device in combination with the equipment positioning and environmental wind speed and direction data;

[0012] Step S3: Establish an equipment component test database, record the historical corrosion aging test data of the internal components, ports and connection lines of the AC / DC integrated power supply equipment into the equipment component test database, classify and organize the equipment component test database, and obtain the benchmark aging rate of each component of the equipment. i , first-level corrosion aging influence coefficient α i , Secondary corrosion aging influence coefficient β i , where i = 1, 2, ..., m;

[0013] Step S4: Perform a comprehensive fault warning timing calculation on each AC / DC integrated power supply device. When it is determined that the fault warning timing is reached, an electrical signal triggers a fault warning to prompt maintenance personnel to troubleshoot potential faults.

[0014] According to the above technical solution, the step S1 of collecting the monitoring data of the coastline by using the data collection module specifically includes:

[0015] Electromagnetic waves are emitted by radar sensors near the coastline to reach the sea surface, and part of the reflected electromagnetic wave signals are captured. The distance from the sea surface to the radar is calculated based on the average time delay of the reflected signals, thereby obtaining the sea surface height h;

[0016] Further, according to the difference in time delays of different reflected signals, the time-distance conversion relationship is also used to obtain the distance value g corresponding to the maximum time difference, that is, the wave height value g.

[0017] According to the above technical solution, step S2 further includes:

[0018] Step S21: obtaining the sea surface height h and wave height g collected in real time;

[0019] Step S22: The salt spray intensity index output module calculates the salt spray intensity at the coastline according to the sea level and the current wave height, and outputs the calculation result as a salt spray intensity index value Q;

[0020] Step S23: Then obtain the positioning information, and obtain the distance l={l1, l2, ..., l n};

[0021] Step S24: then obtaining the wind speed v and sea and land wind directions collected by the environment collection module;

[0022] Step S25: Calculate the salt spray intensity at each AC / DC integrated power supply device according to the salt spray intensity index at the coastline, the distance from the AC / DC integrated power supply device to the coastline, and the influence of the ambient wind speed and direction, and output the salt spray intensity index value q={q1, q2, ..., q n};

[0023] Step S26: Preset the salt spray intensity index threshold q of the first-level impact judgment module a , the salt spray intensity index threshold q of the secondary impact judgment module b ;

[0024] Retrieve the maximum salt spray intensity index that each component of the AC / DC integrated power supply equipment can withstand during operation from the equipment component test database, and then take the minimum value q min , where q a b min ;

[0025] Step S27: Selecting a target AC / DC integrated power supply device;

[0026] When the salt spray intensity index value q of the target equipment a ≤q b When the first-level impact judgment module triggers an electrical signal, it is judged that the target AC / DC integrated power supply equipment is affected by the first-level corrosion aging;

[0027] When the salt spray intensity index value q of the target equipment b ≤q min When the secondary impact judgment module triggers an electrical signal, it is judged that the target AC / DC integrated power supply equipment is affected by the secondary corrosion aging;

[0028] When the salt spray intensity index value of the target equipment q ≥ q min When the comparison judgment module triggers an electrical signal, it is judged that the target AC / DC integrated power supply equipment is seriously affected by salt spray, and the electrical signal is directly transmitted to the early warning judgment module to prompt the maintenance personnel to troubleshoot potential faults;

[0029] When the salt spray intensity index value q of the target equipment a When , no electrical signal is triggered and it is not within the analysis scope of the corrosion aging impact analysis module.

[0030] According to the above technical solution, in step S22, the calculation formula of the salt spray intensity index value at the coastline is:

[0031] Q=k1(h+100)g 2 ;

[0032] Among them, Q is the salt spray intensity index value at the coastline; h is the sea level collected in real time, in meters; g is the wave height collected in real time, in meters; k1 is the conversion coefficient; the salt spray intensity index value at the coastline is affected by the sea level and wave height. When the sea level and wave height are higher, the salt spray intensity index at the coastline is greater; ​​​​​

[0033] In step S25, the calculation formula of the salt spray intensity index value arriving at the AC / DC integrated power supply device is:

[0034]

[0035] Among them, q is the salt spray intensity index value arriving at the AC / DC integrated power supply equipment; l is the distance value from the AC / DC integrated power supply equipment to the coastline; v is the wind speed value; μ is the attenuation coefficient of the salt spray index with the propagation distance; σ is the control parameter of the wind speed value; μ and σ are both constants greater than 0.

[0036] According to the above technical solution, step S4 further includes:

[0037] Step S41: Calculate the aging index E of each component of the AC / DC integrated power supply device, wherein the calculation formula is:

[0038] E i =O i ·t 总 +α i ·t 一 +β i ·t 二

[0039] Among them, E i is the aging index of AC / DC integrated power supply equipment components; i is the baseline aging rate of the target component; α i is the first-level corrosion aging influence coefficient; β i is the secondary corrosion aging influence coefficient; t 总 is the total duration of the target component from being put into use to the current time, and the time of being put into use is obtained from the time point marked on the time axis; t 一 is the total time that the target component has been affected by primary corrosion aging since it was put into use; t 二 The total length of time that the target component has been affected by secondary corrosion aging since it was put into use;

[0040] Step S42: setting an aging index threshold E0 of a component that is reached when a fault warning timing of a component of the AC / DC integrated power supply device is reached;

[0041] Step S43: Based on a complete AC / DC integrated power supply device, calculate the aging index E of all components in the device. i Compared with the aging index threshold E0, when there is E i >E0, the early warning judgment module determines that the fault early warning timing has been reached, and the electrical signal triggers the fault early warning, prompting the maintenance personnel to troubleshoot the potential fault.

[0042] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: the present invention, by providing a data acquisition module, a corrosion aging impact analysis module and a fault warning timing calculation module, can analyze the salt spray intensity at the coastline by collecting monitoring data at the coastline, and combine the different distances between the AC / DC integrated power supply equipment in the coastal area and the coastline, the time the equipment has been put into operation, and the actual aging degree of each component of the equipment caused by the influence of the environmental sea and land wind speed, and calculate the equipment aging status through the baseline aging and corrosion aging impact calculation methods, so as to comprehensively give an accurate warning timing, thereby achieving the effect of high-precision fault warning. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0044] In the attached picture:

[0045] Figure 1 It is a schematic diagram of the system module composition of the present invention. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions 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 are within the scope of protection of the present invention.

[0047] See also Figure 1The present invention provides a technical solution: a fault warning system for an AC / DC integrated power supply for an intelligent station, comprising a data acquisition module, a corrosion aging impact analysis module and a fault warning timing calculation module, wherein the data acquisition module is suitable for collecting data related to AC / DC integrated power supply equipment in coastal areas, the corrosion aging impact analysis module is used to analyze the impact data of corrosion aging on AC / DC integrated power supply equipment in coastal areas, the fault warning timing calculation module is used to analyze and predict the timing of fault warning of AC / DC integrated power supply equipment, and the data acquisition module, the corrosion aging impact analysis module and the fault warning timing calculation module are communicatively connected to each other; by providing the data acquisition module, the corrosion aging impact analysis module and the fault warning timing calculation module, the monitoring data at the coastline can be collected to analyze the faults at the coastline. The intensity of salt spray is taken into consideration, and the different distances between AC / DC integrated power supply equipment and the coastline in coastal areas, the time the equipment has been put into operation, and the actual aging degree of each equipment component caused by the influence of environmental sea and land wind speeds are different. The equipment aging is calculated through the baseline aging and corrosion aging influence calculation methods, so as to give a comprehensive and accurate warning opportunity and achieve the role of high-precision fault warning. At the same time, by adopting the method of observing and monitoring the coastline and centrally managing the equipment in coastal areas, the high cost of deploying an independent sensor monitoring system for each device is effectively reduced, and the high error rate caused by the traditional equipment aging fault warning based on historical experience is avoided. The traditional high error rate causes equipment failure and the failure to take timely countermeasures greatly increases the economic losses, thereby significantly improving the economic efficiency.

[0048] The data acquisition module includes a coastline data monitoring module, an equipment data acquisition module and an environment acquisition module. The coastline data monitoring module is used to monitor the coastline wave height and sea surface height data at the coastline of the area where the AC / DC integrated power supply equipment is located. The equipment data acquisition module is used to collect equipment data of the AC / DC integrated power supply equipment. The environment acquisition module is used to collect environmental wind speed and sea and land wind direction data of the area where the AC / DC integrated power supply equipment is located.

[0049] The corrosion aging impact analysis module includes a salt spray intensity index output module, a primary impact judgment module, a secondary impact judgment module and a comparative judgment module. The salt spray intensity index output module is used to analyze and calculate the salt spray intensity index at the monitored coastline. The primary impact judgment module, the secondary impact judgment module and the comparative judgment module are all communicatively connected to the salt spray intensity index output module. The primary impact judgment module is used to analyze and judge the AC / DC integrated power supply equipment affected by primary corrosion aging. The secondary impact judgment module is used to analyze and judge the AC / DC integrated power supply equipment affected by secondary corrosion aging. The comparative judgment module is used to compare the equipment component experimental database data to judge the AC / DC integrated power supply equipment severely affected by salt spray.

[0050] The fault warning timing calculation module includes a reference aging speed output module, a time axis marking module, a corrosion aging impact calculation module and a warning judgment module. The reference aging speed output module is used to statistically output the aging rate of each component of the AC / DC integrated power supply device, the time axis marking module is used to mark the service life of each component based on the time axis, the corrosion aging impact calculation module is used to analyze and calculate the effective service life of the AC / DC integrated power supply device after being affected by salt spray, and the pre-preg judgment module is used to judge the timing of the fault warning according to the analysis and calculation results.

[0051] The equipment data acquisition module further includes a positioning submodule and an equipment component test database, wherein the positioning submodule is used to locate the position of the AC / DC integrated power supply equipment, and the equipment component test database is used to statistically store historical corrosion aging test data of various components of the AC / DC integrated power supply equipment.

[0052] A fault early warning method for an AC / DC integrated power supply for an intelligent station, the fault early warning method for an AC / DC integrated power supply for an intelligent station comprising the following steps:

[0053] Step S1: First, the data acquisition module is used to collect monitoring data of the coastline, data of equipment deployed in the coastal area, and environmental data, wherein the equipment data includes equipment positioning information and equipment historical aging test data, and the environmental data mainly includes sea and land wind direction and wind speed values ​​in the coastal area;

[0054] Step S2: Acquire the collected coastline monitoring data, analyze the corrosion and aging influencing factors according to the coastline monitoring data, and classify the corrosion and aging impact level of each AC / DC integrated power supply device in combination with the equipment positioning and environmental wind speed and direction data;

[0055] Step S3: Establish an equipment component test database, record the historical corrosion aging test data of the internal components, ports and connection lines of the AC / DC integrated power supply equipment into the equipment component test database, classify and organize the equipment component test database, and obtain the benchmark aging rate of each component of the equipment. i , first-level corrosion aging influence coefficient α i , Secondary corrosion aging influence coefficient β i , where i = 1, 2, ..., m;

[0056] Step S4: Perform a comprehensive fault warning timing calculation on each AC / DC integrated power supply device. When it is determined that the fault warning timing is reached, an electrical signal triggers a fault warning to prompt maintenance personnel to troubleshoot potential faults.

[0057] In step S1, the monitoring data of the coastline is collected by the data collection module, specifically including:

[0058] Electromagnetic waves are emitted by radar sensors near the coastline to reach the sea surface, and part of the reflected electromagnetic wave signals are captured. The distance from the sea surface to the radar is calculated based on the average time delay of the reflected signals, thereby obtaining the sea surface height h;

[0059] Further, based on the difference in time delays of different reflected signals, the time-distance conversion relationship is also used to obtain the distance value g corresponding to the maximum time difference, that is, the wave height value g; when the reflection signal at the top of the wave is captured, the distance to the transmitting end of the radar sensor is closest, and the time delay of the reflected signal is the shortest; when the reflection model at the bottom of the wave is captured, the distance to the transmitting end of the radar sensor is farthest, and the time delay of the reflected signal is the longest. By calculating the time difference between the above situations, the wave height at the measured coastline can be measured in real time.

[0060] Step S2 further comprises:

[0061] Step S21: obtaining the sea surface height h and wave height g collected in real time;

[0062] Step S22: The salt spray intensity index output module calculates the salt spray intensity at the coastline according to the sea level and the current wave height, and outputs the calculation result as a salt spray intensity index value Q;

[0063] Step S23: Then obtain the positioning information, and obtain the distance l={l1, l2, ..., l n};

[0064] Step S24: then obtaining the wind speed v and sea and land wind directions collected by the environment collection module;

[0065] Step S25: Calculate the salt spray intensity at each AC / DC integrated power supply device according to the salt spray intensity index at the coastline, the distance from the AC / DC integrated power supply device to the coastline, and the influence of the ambient wind speed and direction, and output the salt spray intensity index value q={q1, q2, ..., q n};

[0066] Step S26: Preset the salt spray intensity index threshold q of the first-level impact judgment module a , the salt spray intensity index threshold q of the secondary impact judgment module b ;

[0067] Retrieve the maximum salt spray intensity index that each component of the AC / DC integrated power supply equipment can withstand during operation from the equipment component test database, and then take the minimum value q min , where q a b min ​​;

[0068] Step S27: Selecting a target AC / DC integrated power supply device;

[0069] When the salt spray intensity index value q of the target equipment a ≤q b When the first-level impact judgment module triggers an electrical signal, it is judged that the target AC / DC integrated power supply equipment is affected by the first-level corrosion aging;

[0070] When the salt spray intensity index value q of the target equipment b ≤q min When the secondary impact judgment module triggers an electrical signal, it is judged that the target AC / DC integrated power supply equipment is affected by the secondary corrosion aging;

[0071] When the salt spray intensity index value of the target equipment q ≥ q min When the salt spray intensity index value q≥q min When the salt spray intensity reaching the target equipment exceeds the maximum salt spray intensity index that some components in the equipment can withstand, there is a risk of failure if the equipment continues to operate at this salt spray concentration. Therefore, a fault warning is directly triggered, prompting the equipment to be shut down and perform maintenance and repairs, effectively maintaining the equipment, extending the service life of the equipment, and reducing the possibility of failures during equipment operation and the difficulty in taking timely countermeasures, resulting in large economic losses;

[0072] When the salt spray intensity index value q of the target equipment a When , no electrical signal is triggered and it is not within the analysis scope of the corrosion aging impact analysis module.

[0073] In step S22, the calculation formula of the salt spray intensity index value at the coastline is:

[0074] Q=k1(h+100)g 2 ;

[0075] ​​​Among them, Q is the salt spray intensity index value at the coastline; h is the sea level height collected in real time, in "meters"; g is the wave height collected in real time, in "meters"; k1 is the conversion coefficient; in the formula, the salt spray intensity index value at the coastline is affected by the sea level and wave height. When the sea level and wave height are higher, the salt spray intensity index at the coastline is greater; the larger the waves, the more bubbles will be formed after the waves hit the coast or the sea surface breaks at the coastline. During the bubble bursting process, the salt in the seawater is thrown into the air in the form of tiny droplets, forming more salt spray. Affected by the tide, the sea surface has different heights, and the higher the sea surface, the closer it is to the measured coastline, and the less obstacles there are to the spread of salt spray. Therefore, the salt spray intensity at the coastline is stronger;

[0076] In step S25, the calculation formula of the salt spray intensity index value arriving at the AC / DC integrated power supply device is:

[0077]

[0078] Among them, q is the salt spray intensity index value arriving at the AC / DC integrated power supply equipment; l is the distance value from the AC / DC integrated power supply equipment to the coastline; v is the wind speed value; μ is the attenuation coefficient of the salt spray index with the propagation distance; σ is the control parameter of the wind speed value; μ and σ are both constants greater than 0;

[0079] In the formula, the farther the equipment is from the coastline, the smaller the impact of salt fog at the coastline on the target equipment. At the same time, if it is in the sea breeze stage, that is, the wind blowing from the sea to the land, the amplitude and intensity of the spread of salt fog are increased, and the increase ratio is affected by the sea breeze speed. The greater the sea breeze speed, the greater the increase ratio. On the contrary, if it is in the land breeze stage, that is, the wind blowing from the land to the ocean, the amplitude and intensity of the spread of salt fog are suppressed, and the suppression ratio is affected by the sea breeze speed. The greater the sea breeze speed, the greater the suppression ratio.

[0080] Step S4 further comprises:

[0081] Step S41: Calculate the aging index E of each component of the AC / DC integrated power supply device, wherein the calculation formula is:

[0082] E i =O i ·t 总 +α i ·t 一 +β i ·t 二

[0083] Among them, E i is the aging index of AC / DC integrated power supply equipment components; i is the baseline aging rate of the target component; α iis the first-level corrosion aging influence coefficient; β i is the secondary corrosion aging influence coefficient; t 总 is the total duration of the target component from being put into use to the current time, and the time of being put into use is obtained from the time point marked on the time axis; t 一 is the total time that the target component has been affected by primary corrosion aging since it was put into use; t 二 The total length of time that the target component has been affected by secondary corrosion aging since it was put into use;

[0084] Step S42: setting an aging index threshold E0 of a component that is reached when a fault warning timing of a component of the AC / DC integrated power supply device is reached;

[0085] Step S43: Based on a complete AC / DC integrated power supply device, calculate the aging index E of all components in the device. i Compared with the aging index threshold E0, when there is E i >E0, the early warning judgment module determines that the fault early warning timing has been reached, and the electrical signal triggers the fault early warning, prompting the maintenance personnel to troubleshoot the potential fault.

[0086] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0087] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A fault warning system for an AC / DC integrated power supply for an intelligent station, characterized in that: The fault warning system of the AC / DC integrated power supply for the intelligent station includes a data acquisition module, a corrosion and aging impact analysis module and a fault warning timing calculation module. The data acquisition module is suitable for collecting relevant data of AC / DC integrated power supply equipment in coastal areas. The corrosion and aging impact analysis module is used to analyze the impact data of corrosion and aging on the AC / DC integrated power supply equipment in coastal areas. The fault warning timing calculation module is used to analyze and predict the timing of fault warning of the AC / DC integrated power supply equipment. The data acquisition module, the corrosion and aging impact analysis module and the fault warning timing calculation module are communicatively connected to each other.

2. The fault warning system for the AC / DC integrated power supply for intelligent stations according to claim 1 is characterized in that: The data acquisition module includes a coastline data monitoring module, an equipment data acquisition module and an environment acquisition module. The coastline data monitoring module is used to monitor the coastline wave height and sea surface height data at the coastline of the area where the AC / DC integrated power supply equipment is located. The equipment data acquisition module is used to collect equipment data of the AC / DC integrated power supply equipment. The environment acquisition module is used to collect environmental wind speed and sea and land wind direction data of the area where the AC / DC integrated power supply equipment is located.

3. The fault warning system for the AC / DC integrated power supply for intelligent stations according to claim 1 is characterized in that: The corrosion aging impact analysis module includes a salt spray intensity index output module, a primary impact judgment module, a secondary impact judgment module and a comparative judgment module. The salt spray intensity index output module is used to analyze and calculate the salt spray intensity index at the monitored coastline. The primary impact judgment module, the secondary impact judgment module and the comparative judgment module are all communicatively connected to the salt spray intensity index output module. The primary impact judgment module is used to analyze and judge the AC / DC integrated power supply equipment affected by primary corrosion aging. The secondary impact judgment module is used to analyze and judge the AC / DC integrated power supply equipment affected by secondary corrosion aging. The comparative judgment module is used to compare the equipment component experimental database data to judge the AC / DC integrated power supply equipment severely affected by salt spray.

4. The fault warning system for the AC / DC integrated power supply for intelligent stations according to claim 1 is characterized in that: The fault warning timing calculation module includes a reference aging speed output module, a time axis marking module, a corrosion aging impact calculation module and a warning judgment module. The reference aging speed output module is used to statistically output the aging rate of each component of the AC / DC integrated power supply device, the time axis marking module is used to mark the service life of each component based on the time axis, the corrosion aging impact calculation module is used to analyze and calculate the effective service life of the AC / DC integrated power supply device after being affected by salt spray, and the pre-preg judgment module is used to judge the timing of the fault warning according to the analysis and calculation results.

5. The fault warning system for the AC / DC integrated power supply for intelligent stations according to claim 2 is characterized in that: The equipment data acquisition module further includes a positioning submodule and an equipment component test database, wherein the positioning submodule is used to locate the position of the AC / DC integrated power supply equipment, and the equipment component test database is used to statistically store historical corrosion aging test data of various components of the AC / DC integrated power supply equipment.

6. A fault warning method for an AC / DC integrated power supply for an intelligent station, characterized in that: The fault early warning method of the AC / DC integrated power supply for the intelligent station comprises the following steps: Step S1: First, the data acquisition module is used to collect monitoring data of the coastline, data of equipment deployed in the coastal area, and environmental data, wherein the equipment data includes equipment positioning information and equipment historical aging test data, and the environmental data mainly includes sea and land wind direction and wind speed values ​​in the coastal area; Step S2: Acquire the collected coastline monitoring data, analyze the corrosion and aging influencing factors according to the coastline monitoring data, and classify the corrosion and aging impact level of each AC / DC integrated power supply device in combination with the equipment positioning and environmental wind speed and direction data; Step S3: Establish an equipment component test database, record the historical corrosion aging test data of the internal components, ports and connection lines of the AC / DC integrated power supply equipment into the equipment component test database, classify and organize the equipment component test database, and obtain the benchmark aging rate of each component of the equipment. i , first-level corrosion aging influence coefficient α i , Secondary corrosion aging influence coefficient β i , where i = 1, 2, ..., m; Step S4: Perform a comprehensive fault warning timing calculation on each AC / DC integrated power supply device. When it is determined that the fault warning timing is reached, an electrical signal triggers a fault warning to prompt maintenance personnel to troubleshoot potential faults.

7. The fault early warning method of the AC / DC integrated power supply for intelligent station according to claim 6, characterized in that: The step S1 of collecting the monitoring data of the coastline by using the data collection module specifically includes: Electromagnetic waves are emitted by radar sensors near the coastline to reach the sea surface, and part of the reflected electromagnetic wave signals are captured. The distance from the sea surface to the radar is calculated based on the average time delay of the reflected signals, thereby obtaining the sea surface height h; Further, according to the difference in time delays of different reflected signals, the time-distance conversion relationship is also used to obtain the distance value g corresponding to the maximum time difference, that is, the wave height value g.

8. The fault early warning method of the AC / DC integrated power supply for intelligent station according to claim 6, characterized in that: The step S2 further comprises: Step S21: obtaining the sea surface height h and wave height g collected in real time; Step S22: The salt spray intensity index output module calculates the salt spray intensity at the coastline according to the sea level and the current wave height, and outputs the calculation result as a salt spray intensity index value Q; Step S23: Then obtain the positioning information, and obtain the distance l={l1, l2, ..., l n }; Step S24: then obtaining the wind speed v and sea and land wind directions collected by the environment collection module; Step S25: Calculate the salt spray intensity at each AC / DC integrated power supply device according to the salt spray intensity index at the coastline, the distance from the AC / DC integrated power supply device to the coastline, and the influence of the ambient wind speed and direction, and output the salt spray intensity index value q={q1, q2, ..., q n }; Step S26: Preset the salt spray intensity index threshold q of the first-level impact judgment module a , the salt spray intensity index threshold q of the secondary impact judgment module b ; Retrieve the maximum salt spray intensity index that each component of the AC / DC integrated power supply equipment can withstand during operation from the equipment component test database, and then take the minimum value q min , where q a b min ;​​ Step S27: Selecting a target AC / DC integrated power supply device; When the salt spray intensity index value q of the target equipment a ≤q b When the first-level impact judgment module triggers an electrical signal, it is judged that the target AC / DC integrated power supply equipment is affected by the first-level corrosion aging;​ When the salt spray intensity index value q of the target equipment b ≤q min When the secondary impact judgment module triggers an electrical signal, it is judged that the target AC / DC integrated power supply equipment is affected by the secondary corrosion aging;​ When the salt spray intensity index value of the target equipment q ≥ q min When the comparison judgment module triggers an electrical signal, it is judged that the target AC / DC integrated power supply equipment is seriously affected by salt spray, and the electrical signal is directly transmitted to the early warning judgment module to prompt the maintenance personnel to troubleshoot potential faults; When the salt spray intensity index value q of the target equipment a When , no electrical signal is triggered and it is not within the analysis scope of the corrosion aging impact analysis module.​ 9. The fault early warning method of the AC / DC integrated power supply for intelligent station according to claim 8, characterized in that: In step S22, the calculation formula of the salt spray intensity index value at the coastline is: Q=k1(h+100)g 2 ; Among them, Q is the salt spray intensity index value at the coastline; h is the sea level collected in real time, in meters; g is the wave height collected in real time, in meters; k1 is the conversion coefficient; the salt spray intensity index value at the coastline is affected by the sea level and wave height. When the sea level and wave height are higher, the salt spray intensity index at the coastline is greater; In step S25, the calculation formula of the salt spray intensity index value arriving at the AC / DC integrated power supply device is: Among them, q is the salt spray intensity index value arriving at the AC / DC integrated power supply equipment; l is the distance value from the AC / DC integrated power supply equipment to the coastline; v is the wind speed value; μ is the attenuation coefficient of the salt spray index with the propagation distance; σ is the control parameter of the wind speed value; μ and σ are both constants greater than 0.

10. The fault warning method of the AC / DC integrated power supply for intelligent station according to claim 6, characterized in that: The step S4 further comprises: Step S41: Calculate the aging index E of each component of the AC / DC integrated power supply device, wherein the calculation formula is: E i =O i ·t 总 +a i ·t 一 +b i ·t 二 Among them, E i is the aging index of AC / DC integrated power supply equipment components; i is the benchmark aging rate of the target component; α i is the first-level corrosion aging influence coefficient; β i is the secondary corrosion aging influence coefficient; t 总 is the total duration of the target component from being put into use to the current time, and the time of being put into use is obtained from the time point marked on the time axis; t 一 is the total time that the target component has been affected by primary corrosion aging since it was put into use; t 二 The total length of time that the target component has been affected by secondary corrosion aging since it was put into use; Step S42: setting an aging index threshold E0 of a component that is reached when a fault warning timing of a component of the AC / DC integrated power supply device is reached; Step S43: Based on a complete AC / DC integrated power supply device, calculate the aging index E of all components in the device. i Compared with the aging index threshold E0, when there is E i >E0, the early warning judgment module determines that the fault early warning timing has been reached, and the electrical signal triggers the fault early warning, prompting the maintenance personnel to troubleshoot the potential fault.

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