Power transformation loop reliability system management and analysis system and method thereof

Abstract

The invention discloses a power transformation loop reliability system management analysis system and method, and relates to the technical field of power transformation loop reliability, and the system comprises a basic data module, a data monitoring module, a data analysis module, a reliability evaluation module, a fault analysis module, and a result output module. According to the power transformation loop reliability system management and analysis system and the method thereof, various data required by power transformation loop reliability system management and analysis can be comprehensively acquired and managed through the basic data module and the data monitoring module, and the data analysis module is used for deeply analyzing the data; the system can accurately and efficiently extract useful information from mass data, can obtain an accurate quantitative evaluation result of the reliability of the power transformation loop in cooperation with the reliability evaluation module, and can predict and diagnose the fault of the power transformation loop in cooperation with the fault analysis module so as to send an early warning to a manager before the fault occurs, thereby improving the reliability of the power transformation loop. The whole relation analysis process does not need manual participation, and human factor errors are effectively avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of substation circuit reliability, and in particular to a substation circuit reliability system management and analysis system and method thereof. Background Art

[0002] Substation circuit reliability refers to the ability of a substation to provide users with stable and continuous power services during long-term operation. This requires that the substation circuit can maintain normal operation under various conditions without failures or accidents, thereby ensuring the continuity and stability of power supply. The reliability of the substation circuit is an important part of the reliability assessment of the power system, which is directly related to the safe and stable operation of the power system and the quality of electricity used by users. By selecting high-quality equipment, strengthening operation and maintenance, optimizing design solutions, improving environmental conditions, and applying intelligent technologies, the reliability of the substation circuit can be significantly improved to ensure the safe and stable operation of the power system and the quality of electricity used by users.

[0003] The evaluation methods of substation circuit reliability usually include qualitative and quantitative methods. Qualitative evaluation mainly evaluates the reliability of substation circuit by analyzing factors such as the structure, equipment quality, operation and maintenance of the substation circuit. Quantitative evaluation collects historical fault data and operation data of the substation circuit, and uses mathematical models and statistical methods to accurately calculate and analyze the reliability of the substation circuit.

[0004] However, in actual operation, since the management and analysis of the substation circuit reliability system usually requires processing a large amount of operating data, fault information and historical data, the data analysis process faces challenges, and the existing systems are often difficult to accurately and efficiently extract useful information from massive data and perform fault prediction and early warning. Especially in management and analysis systems with human participation, human factors will also have an impact on the operation of the system. For example, the operator's omissions, misjudgments and other behaviors will interfere with the management and analysis results of the system.

[0005] Therefore, it is urgent to improve this shortcoming. The present invention studies and improves the existing technology and its shortcomings, and provides a substation circuit reliability system management and analysis system and method. Summary of the invention

[0006] The object of the present invention is to provide a substation circuit reliability system management and analysis system and method thereof to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] On the one hand, a substation circuit reliability system management and analysis system is provided, comprising:

[0009] Basic data module, which is responsible for collecting, collating and storing all basic data related to the reliability of the substation circuit, such as equipment parameters (including basic information such as the model, specification, manufacturer, installation date, etc. of key equipment such as transformers, circuit breakers, disconnectors, etc., as well as electrical parameters such as the rated current, rated voltage, and short-circuit impedance of the equipment), operation records (various status information of the substation circuit during operation, such as real-time monitoring data such as current, voltage, power factor, temperature, and equipment operation records, maintenance records, etc.), fault history (various fault events that occurred in the substation circuit in the past, including fault time, fault type, fault cause, treatment measures and results, etc.), etc.;

[0010] A data monitoring module, which is responsible for real-time monitoring of the operating status of the substation circuit, including key parameters such as current, voltage, and power, to ensure the stable operation of the power system;

[0011] A data analysis module, which is responsible for in-depth analysis of basic data and real-time data to identify potential problems and risks in the substation circuit, and includes a basic data analysis submodule and a real-time data analysis submodule;

[0012] A reliability evaluation module, which is responsible for calculating reliability indicators such as availability, failure rate, repair time, etc. based on the results of the data analysis module, and performing quantitative evaluation on the reliability of the substation circuit;

[0013] A fault analysis module is responsible for predicting possible faults in the substation circuit based on real-time monitoring data and data analysis results, and for performing fault diagnosis, determining the cause and location of the fault, and providing fault warning;

[0014] The result output module is responsible for automatically generating a detailed report based on the results of the reliability assessment module and the fault analysis module, and the report content includes the reliability assessment results of the substation circuit, fault warning information, fault diagnosis results, etc., and provides a report export function, supporting multiple report export formats, such as PDF, Excel, Word, etc., so that managers can send reports to relevant personnel or archive them.

[0015] Furthermore, the basic data module provides data query and retrieval functions to facilitate data analysis in other modules. Users can quickly search based on keywords such as equipment name, model, fault type, or filter and sort according to conditions such as time range and equipment type. It also supports fuzzy query and combined query to meet users' diverse query needs.

[0016] Furthermore, the monitoring content of the data monitoring module includes current, voltage, power and other related parameters, such as frequency, harmonics, temperature, etc., so as to fully reflect the operating status of the substation circuit;

[0017] Current: Real-time monitoring of the current value in the substation circuit, including the magnitude of each phase current, balance (measurement of whether the three-phase current is uniform), etc., to determine whether the current exceeds the rated range or has abnormal fluctuations;

[0018] Voltage: monitor the voltage value in the substation circuit, including bus voltage, system frequency, etc., to ensure the voltage stability and qualification rate;

[0019] Power: Monitor parameters such as active power (active power reflects the actual work capacity of the power system), reactive power (reactive power is closely related to the voltage stability of the power system. Reasonable reactive power compensation can improve the power factor of the power system and reduce line losses) and power factor (an indicator to measure the efficiency of power system energy utilization) in the substation circuit to evaluate the energy efficiency and stability of the power system;

[0020] Other related parameters: including frequency, harmonics, and temperature, as follows:

[0021] The frequency reflects the changes in the speed and load of the generator set, and by real-time monitoring of the frequency value of the power system, it is determined whether it fluctuates within a specified range;

[0022] The harmonics are waveform distortions caused by nonlinear loads, which can cause voltage and current distortion, thereby affecting the normal operation of power equipment. By real-time monitoring of the harmonic content and frequency in the power system, it is determined whether there is a harmonic pollution problem;

[0023] The temperature is the temperature of equipment such as transformers, capacitors, and inductors. By monitoring the temperature value of power equipment in real time, overheating problems of the equipment can be discovered.

[0024] Furthermore, the monitoring method of the data monitoring module includes:

[0025] Sensors and instruments: Sensors and instruments (such as multi-function power meters, current transformers, voltage transformers, etc.) installed in the substation circuit collect current, voltage and other parameters in real time and transmit the data to the data monitoring module;

[0026] Remote monitoring: Use modern communication technologies (such as RS485, LoRa, NB-IoT, 4G, etc.) to achieve remote monitoring, and transmit the status data of the substation circuit to the remote monitoring center in real time, so that the operation and maintenance personnel can grasp the operating status of the substation circuit at any time.

[0027] Furthermore, the basic data analysis submodule specifically includes:

[0028] Equipment parameter analysis: Understand the performance and operating characteristics of the equipment by analyzing the basic parameters of the equipment (such as model, specification, manufacturer, etc.) and electrical parameters (such as rated current, rated voltage, etc.);

[0029] Operation record analysis: Statistical analysis of the operation records of the substation circuit, including the change trends and distribution characteristics of parameters such as current, voltage, and power, to evaluate the operating status and energy efficiency of the equipment;

[0030] Fault history analysis: Summarize and summarize past fault events in the substation circuit, analyze the type, cause, treatment measures and results of the fault, and provide reference for fault warning and prevention.

[0031] Furthermore, the real-time data analysis submodule is responsible for real-time analysis and processing of real-time monitoring parameters such as current, voltage, power, frequency, harmonics, temperature, etc., timely detection of abnormal changes and potential risks, and use of data mining technology to extract useful information from massive data, identify operating modes and fault modes in substation circuits, and provide a basis for fault prediction and diagnosis.

[0032] Furthermore, the reliability index specifically includes:

[0033] 1) Availability: The probability that the substation circuit can complete the required functions under the specified execution conditions. It reflects the ability of the substation circuit to continuously supply power for a long time. The availability includes system availability and component availability. The calculation method is as follows:

[0034] System availability: calculated by counting the ratio of available hours of the substation circuit within a certain period of time to the total hours. The specific formula is: System availability = the sum of available hours of all lines / (number of lines × number of hours) × 100%;

[0035] Component availability: For a specific component, the probability of it working normally at the beginning and still working normally at a certain point in time is calculated;

[0036] 2) Failure rate: The probability of failure of a substation circuit or component after a period of normal operation. It reflects the reliability and durability of the substation circuit or component. The calculation method is calculated by counting the number of failures of the substation circuit or component within a certain period of time and the total operating time. The specific formula is: Failure rate = number of failures / total operating time;

[0037] 3) Repair time: The time required from the occurrence of a fault to the restoration of normal operation after a substation circuit or component fails. It reflects the repair capability and operation and maintenance efficiency of the substation circuit or component. The calculation method is:

[0038] Mean time to repair (MTTR): obtained by counting all fault repair times of substation circuits or components within a certain period of time and calculating their average value. Specific methods include simple average method, weighted average method, fault tree analysis method and simulation method;

[0039] Specific repair time: For each fault, the specific time from discovery to repair is recorded to evaluate the response speed and repair capabilities of the emergency repair team.

[0040] Furthermore, the fault analysis module specifically includes the following submodules:

[0041] Fault prediction submodule: Based on historical data and real-time monitoring data, a fault prediction model is established using machine learning algorithms (such as regression analysis, time series prediction, deep learning, etc.) to predict the type and time of possible future faults.

[0042] Fault diagnosis submodule: When a fault occurs in the substation circuit, data mining technology is used to extract fault characteristics (such as fault time, type, location, etc.), and matched and diagnosed in combination with the fault mode library. Then, fault diagnosis is performed by using decision trees, neural networks and other algorithms to help operation and maintenance personnel quickly locate the problem and take corresponding treatment measures.

[0043] Fault warning submodule: Before a substation circuit fails, it sends a warning signal to the operation and maintenance management personnel to remind them to take timely measures to troubleshoot and repair the fault.

[0044] Furthermore, the report content specifically includes:

[0045] Substation circuit reliability assessment: Provide reliability indicators of the substation circuit as a whole and each key component, such as availability, failure rate, etc., as well as reliability assessment results, including indicator change trends, potential problems in substation circuit operation and improvement directions;

[0046] Fault warning information: summarizes recent fault warning information, including warning time, warning level, warning reason, etc., and provides detailed analysis and handling suggestions for fault warnings to help operation and maintenance personnel take timely measures to prevent faults from occurring;

[0047] Fault diagnosis results: Lists detailed information about the faults that have occurred, including fault type, fault location, fault time, etc., and provides detailed fault diagnosis process and conclusions, as well as repair suggestions and preventive measures;

[0048] Summary and Suggestions: Summarize the key findings in the report, put forward targeted suggestions and improvement measures, and provide scientific basis and decision-making support for the operation and maintenance of substation circuits, equipment selection, and power grid planning.

[0049] On the other hand, a substation circuit reliability system management and analysis method is provided, which is applied to the substation circuit reliability system management and analysis system as described above, and includes the following steps:

[0050] S1. Collect, organize and store all basic data related to the reliability of the substation circuit through the basic data module, and monitor the operating status of the substation circuit in real time through the data monitoring module to obtain real-time operating data;

[0051] S2. Analyze the data using the data analysis module, specifically, conduct in-depth analysis of the basic data and real-time data through the basic data analysis submodule and the real-time data analysis submodule respectively;

[0052] S3, the reliability evaluation module calculates the reliability index based on the results of the data analysis module, performs quantitative evaluation on the reliability of the substation circuit, and sends the evaluation results to the result output module;

[0053] S4, the fault analysis module predicts the possible faults of the substation circuit based on the real-time monitoring data and data analysis results, determines the cause and location of the fault through fault diagnosis, sends the fault information to the result output module, and sends an early warning to the operation and maintenance management personnel;

[0054] S5. The result output module automatically generates a detailed report based on the results of the reliability assessment module and the fault analysis module and sends it to the management personnel.

[0055] The present invention provides a substation circuit reliability system management and analysis system and method thereof, which have the following beneficial effects:

[0056] The present invention can comprehensively acquire and manage various data required for the management and analysis of the substation circuit reliability system through the basic data module and the data monitoring module, and use the data analysis module to conduct in-depth analysis of the data to accurately and efficiently extract useful information from massive data. In conjunction with the reliability evaluation module, accurate quantitative evaluation results of the substation circuit reliability can be obtained. In conjunction with the fault analysis module, substation circuit faults can be predicted and diagnosed so that early warnings can be sent to management personnel before the fault occurs. The entire relationship analysis process does not require human participation, effectively avoiding errors caused by human factors, and reducing the workload of management personnel, which helps to accurately and efficiently execute the management and analysis tasks of the substation circuit reliability system. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] Figure 1 A logic block diagram of a substation circuit reliability system management and analysis system of the present invention;

[0058] Figure 2 A reliability index diagram of a substation circuit reliability system management and analysis system according to the present invention;

[0059] Figure 3 The present invention is a schematic flow chart of the steps of a method for managing and analyzing a substation circuit reliability system. DETAILED DESCRIPTION

[0060] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0061] like Figure 1-Figure 2 As shown, a substation circuit reliability system management and analysis system includes: a basic data module, a data monitoring module, a data analysis module, a reliability evaluation module, a fault analysis module, and a result output module;

[0062] Basic data module: responsible for collecting, organizing and storing all basic data related to the reliability of substation circuits, such as equipment parameters (including basic information such as the model, specification, manufacturer, installation date, etc. of key equipment such as transformers, circuit breakers, disconnectors, and rated current, rated voltage, short-circuit impedance, and other electrical parameters of the equipment), operation records (various status information of substation circuits during operation, such as real-time monitoring data such as current, voltage, power factor, temperature, and equipment operation records, maintenance records, etc.), fault history (various fault events that occurred in substation circuits in the past, including fault time, fault type, fault cause, treatment measures and results, etc.); and provides data query and retrieval functions to facilitate data analysis in other modules. Users can quickly search based on keywords such as equipment name, model, fault type, or filter and sort according to time range, equipment type, and other conditions. At the same time, it supports fuzzy query and combined query to meet users' diverse query needs;

[0063] Data monitoring module: responsible for real-time monitoring of the operating status of the substation circuit to ensure the stable operation of the power system; in this embodiment, the monitoring content specifically includes current, voltage, power and other related parameters, such as frequency, harmonics, temperature, etc., to fully reflect the operating status of the substation circuit;

[0064] Current: Real-time monitoring of the current value in the substation circuit, including the magnitude of each phase current, balance (measurement of whether the three-phase current is uniform), etc., to determine whether the current exceeds the rated range or has abnormal fluctuations;

[0065] Voltage: monitor the voltage value in the substation circuit, including bus voltage, system frequency, etc., to ensure the voltage stability and qualification rate;

[0066] Power: Monitor parameters such as active power (active power reflects the actual work capacity of the power system), reactive power (reactive power is closely related to the voltage stability of the power system. Reasonable reactive power compensation can improve the power factor of the power system and reduce line losses) and power factor (an indicator to measure the efficiency of power system energy utilization) in the substation circuit to evaluate the energy efficiency and stability of the power system;

[0067] Other related parameters: including frequency, harmonics, and temperature, as follows:

[0068] The frequency reflects the changes in the speed and load of the generator set. By monitoring the frequency value of the power system in real time, it can be determined whether it fluctuates within the specified range;

[0069] Harmonics are waveform distortions caused by nonlinear loads, which can cause voltage and current distortion, thus affecting the normal operation of power equipment. By real-time monitoring of the harmonic content and frequency in the power system, it is possible to determine whether there is a harmonic pollution problem.

[0070] Temperature refers to the temperature of transformers, capacitors, inductors and other equipment. By monitoring the temperature of power equipment in real time, overheating problems of equipment can be discovered.

[0071] In this embodiment, the monitoring method of the data monitoring module includes:

[0072] Sensors and instruments: Sensors and instruments (such as multi-function power meters, current transformers, voltage transformers, etc.) installed in the substation circuit collect current, voltage and other parameters in real time and transmit the data to the data monitoring module;

[0073] Remote monitoring: Use modern communication technologies (such as RS485, LoRa, NB-IoT, 4G, etc.) to achieve remote monitoring, and transmit the status data of the substation circuit to the remote monitoring center in real time, so that the operation and maintenance personnel can grasp the operating status of the substation circuit at any time;

[0074] Data analysis module: responsible for in-depth analysis of basic data and real-time data, identifying potential problems and risks in the substation circuit, including basic data analysis submodule and real-time data analysis submodule;

[0075] In this embodiment, the basic data analysis submodule specifically includes:

[0076] Equipment parameter analysis: Understand the performance and operating characteristics of the equipment by analyzing the basic parameters of the equipment (such as model, specification, manufacturer, etc.) and electrical parameters (such as rated current, rated voltage, etc.);

[0077] Operation record analysis: Statistical analysis of the operation records of the substation circuit, including the change trends and distribution characteristics of parameters such as current, voltage, and power, to evaluate the operating status and energy efficiency of the equipment;

[0078] Fault history analysis: summarize and conclude past fault events of substation circuits, analyze the types, causes, treatment measures and results of faults, and provide reference for fault warning and prevention;

[0079] In this embodiment, the real-time data analysis submodule is responsible for real-time analysis and processing of real-time monitoring parameters such as current, voltage, power, frequency, harmonics, temperature, etc., timely discovering abnormal changes and potential risks, and using data mining technology to extract useful information from massive data, identify the operation mode and fault mode in the substation circuit, and provide a basis for fault prediction and diagnosis;

[0080] Reliability evaluation module: Based on the results of the data analysis module, calculate reliability indicators such as availability, failure rate, repair time, etc., and conduct quantitative evaluation of the reliability of the substation circuit;

[0081] In this embodiment, the reliability index specifically includes:

[0082] 1) Availability: The probability that the substation circuit can complete the required functions under the specified execution conditions. It reflects the ability of the substation circuit to continuously supply power for a long time. The availability includes system availability and component availability. The calculation method is as follows:

[0083] System availability: calculated by counting the ratio of available hours of the substation circuit within a certain period of time to the total hours. The specific formula is: System availability = the sum of available hours of all lines / (number of lines × number of hours) × 100%;

[0084] Component availability: For a specific component, the probability of it working normally at the beginning and still working normally at a certain point in time is calculated;

[0085] 2) Failure rate: The probability of failure of a substation circuit or component after a period of normal operation. It reflects the reliability and durability of the substation circuit or component. The calculation method is calculated by counting the number of failures of the substation circuit or component within a certain period of time and the total operating time. The specific formula is: Failure rate = number of failures / total operating time;

[0086] 3) Repair time: The time required from the occurrence of a fault to the restoration of normal operation after a substation circuit or component fails. It reflects the repair capability and operation and maintenance efficiency of the substation circuit or component. The calculation method is:

[0087] Mean time to repair (MTTR): obtained by counting all fault repair times of substation circuits or components within a certain period of time and calculating their average value. Specific methods include simple average method, weighted average method, fault tree analysis method and simulation method;

[0088] Specific repair time: For each fault, the specific time from discovery to repair is recorded to evaluate the response speed and repair capability of the repair team;

[0089] Fault analysis module: responsible for predicting possible faults in the substation circuit based on real-time monitoring data and data analysis results, and performing fault diagnosis, determining the cause and location of the fault, and providing fault warning; and the fault analysis module specifically includes the following submodules:

[0090] Fault prediction submodule: Based on historical data and real-time monitoring data, a fault prediction model is established using machine learning algorithms (such as regression analysis, time series prediction, deep learning, etc.) to predict the type and time of possible future faults.

[0091] Fault diagnosis submodule: When a fault occurs in the substation circuit, data mining technology is used to extract fault characteristics (such as fault time, type, location, etc.), and matched and diagnosed in combination with the fault mode library. Then, fault diagnosis is performed by using decision trees, neural networks and other algorithms to help operation and maintenance personnel quickly locate the problem and take corresponding treatment measures.

[0092] Fault warning submodule: Before a substation circuit fails, it sends a warning signal to the operation and maintenance management personnel to remind them to take timely measures to troubleshoot and repair the fault.

[0093] Result output module: responsible for automatically generating detailed reports based on the results of the reliability assessment module and the fault analysis module. The report content includes the reliability assessment results of the substation circuit, fault warning information, fault diagnosis results, etc. It also provides report export function and supports multiple report export formats, such as PDF, Excel, Word, etc., so that managers can send reports to relevant personnel or archive them;

[0094] In this embodiment, the report content specifically includes:

[0095] Substation circuit reliability assessment: Provide reliability indicators of the substation circuit as a whole and each key component, such as availability, failure rate, etc., as well as reliability assessment results, including indicator change trends, potential problems in substation circuit operation and improvement directions;

[0096] Fault warning information: summarizes recent fault warning information, including warning time, warning level, warning reason, etc., and provides detailed analysis and handling suggestions for fault warnings to help operation and maintenance personnel take timely measures to prevent faults from occurring.

[0097] Fault diagnosis results: Lists detailed information about the faults that have occurred, including fault type, fault location, fault time, etc., and provides detailed fault diagnosis process and conclusions, as well as repair suggestions and preventive measures;

[0098] Summary and Suggestions: Summarize the key findings in the report, put forward targeted suggestions and improvement measures, and provide scientific basis and decision-making support for the operation and maintenance of substation circuits, equipment selection, and power grid planning.

[0099] like Figure 3 As shown, a substation circuit reliability system management and analysis method is applied to the substation circuit reliability system management and analysis system as described above, comprising the following steps:

[0100] S1. Collect, organize and store all basic data related to the reliability of the substation circuit through the basic data module, and monitor the operating status of the substation circuit in real time through the data monitoring module to obtain real-time operating data;

[0101] S2. Analyze the data using the data analysis module, specifically, conduct in-depth analysis of the basic data and real-time data through the basic data analysis submodule and the real-time data analysis submodule respectively;

[0102] S3, the reliability evaluation module calculates the reliability index based on the results of the data analysis module, performs quantitative evaluation on the reliability of the substation circuit, and sends the evaluation results to the result output module;

[0103] S4, the fault analysis module predicts the possible faults of the substation circuit based on the real-time monitoring data and data analysis results, determines the cause and location of the fault through fault diagnosis, sends the fault information to the result output module, and sends an early warning to the operation and maintenance management personnel;

[0104] S5. The result output module automatically generates a detailed report based on the results of the reliability assessment module and the fault analysis module and sends it to the management personnel.

[0105] The embodiments of the present invention are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A substation circuit reliability system management and analysis system, characterized in that: include: A basic data module, which is responsible for collecting, collating and storing all basic data related to the reliability of the substation circuit; A data monitoring module, which is responsible for real-time monitoring of the operating status of the substation circuit; A data analysis module, which is responsible for in-depth analysis of basic data and real-time data, and includes a basic data analysis submodule and a real-time data analysis submodule; A reliability evaluation module, which is responsible for calculating reliability indicators based on the results of the data analysis module and performing quantitative evaluation on the reliability of the substation circuit; A fault analysis module is responsible for predicting possible faults in the substation circuit based on real-time monitoring data and data analysis results, and for performing fault diagnosis, determining the cause and location of the fault, and providing fault warning; The result output module is responsible for automatically generating a detailed report based on the results of the reliability evaluation module and the fault analysis module, and provides a report export function.

2. A substation circuit reliability system management and analysis system according to claim 1, characterized in that: The basic data module provides data query and retrieval functions, which can perform rapid retrieval based on keywords, or filter and sort based on conditions, and also supports fuzzy query and combined query.

3. A substation circuit reliability system management and analysis system according to claim 1, characterized in that: The monitoring content of the data monitoring module includes current, voltage, power and other related parameters; Current: Real-time monitoring of the current value in the substation circuit, including the magnitude and balance of each phase current, to determine whether the current exceeds the rated range or has abnormal fluctuations; Voltage: monitor the voltage value in the substation circuit, including bus voltage and system frequency, to ensure the voltage stability and qualification rate; Power: Monitor active power, reactive power and power factor in the substation circuit to evaluate the energy efficiency and stability of the power system; Other related parameters: including frequency, harmonics, and temperature, as follows: The frequency reflects the changes in the speed and load of the generator set, and by real-time monitoring of the frequency value of the power system, it is determined whether it fluctuates within a specified range; The harmonics are waveform distortions caused by nonlinear loads. By real-time monitoring of the harmonic content and frequency in the power system, it is determined whether there is a harmonic pollution problem. The temperature is the temperature of equipment such as transformers, capacitors, and inductors. By monitoring the temperature value of power equipment in real time, overheating problems of the equipment can be discovered.

4. A substation circuit reliability system management and analysis system according to claim 1, characterized in that: The monitoring method of the data monitoring module includes: Sensors and instruments: Sensors and instruments installed in the substation circuit collect parameters such as current and voltage in real time and transmit the data to the data monitoring module; Remote monitoring: Use modern communication technology to achieve remote monitoring and transmit the status data of the substation circuit to the remote monitoring center in real time.

5. A substation circuit reliability system management and analysis system according to claim 1, characterized in that: The basic data analysis submodule specifically includes: Equipment parameter analysis: Understand the performance and operating characteristics of the equipment through analysis of the basic parameters and electrical parameters of the equipment; Operation record analysis: Statistical analysis of the operation records of the substation circuit, including the change trends and distribution characteristics of parameters such as current, voltage, and power, to evaluate the operating status and energy efficiency of the equipment; Fault history analysis: Summarize and summarize past fault events in the substation circuit, analyze the type, cause, treatment measures and results of the fault, and provide reference for fault warning and prevention.

6. A substation circuit reliability system management and analysis system according to claim 1, characterized in that: The real-time data analysis submodule is responsible for real-time analysis and processing of real-time monitoring parameters such as current, voltage, power, frequency, harmonics, temperature, etc., timely discovering abnormal changes and potential risks, and using data mining technology to extract useful information from massive data, identify operating modes and fault modes in substation circuits, and provide a basis for fault prediction and diagnosis.

7. A substation circuit reliability system management and analysis system according to claim 1, characterized in that: The reliability indicators specifically include: 1) Availability: The probability that the substation circuit can complete the required functions under the specified execution conditions. The availability includes system availability and component availability. The calculation method is as follows: System availability: calculated by counting the ratio of available hours of the substation circuit within a certain period of time to the total hours. The specific formula is: System availability = the sum of available hours of all lines / (number of lines × number of hours) × 100%; Component availability: For a specific component, the probability of it working normally at the beginning and still working normally at a certain point in time is calculated; 2) Failure rate: The probability of failure of a substation circuit or component after a period of normal operation. Calculation method: Calculate by counting the ratio of the number of failures of the substation circuit or component within a certain period of time to the total operating time. The specific formula is: Failure rate = number of failures / total operating time; 3) Repair time: The time required from the occurrence of a fault to the restoration of normal operation after a transformer circuit or component fails. The calculation method is: Mean repair time: obtained by counting all fault repair times of substation circuits or components within a certain period of time and calculating their average value; Specific repair time: For each fault, the specific time from discovery to repair is recorded to evaluate the response speed and repair capabilities of the emergency repair team.

8. A substation circuit reliability system management and analysis system according to claim 1, characterized in that: The fault analysis module specifically includes the following submodules: Fault prediction submodule: Based on historical data and real-time monitoring data, a machine learning algorithm is used to establish a fault prediction model to predict the type and time of possible future faults; Fault diagnosis submodule: When a fault occurs in the substation circuit, data mining technology is used to extract fault characteristics, and the fault pattern library is combined for matching and diagnosis. Then, the decision tree, neural network and other algorithms are used for fault diagnosis to help operation and maintenance personnel quickly locate the problem and take corresponding treatment measures. Fault warning submodule: Before a substation circuit fails, it sends a warning signal to the operation and maintenance management personnel to remind them to take timely measures to troubleshoot and repair the fault.

9. A substation circuit reliability system management and analysis system according to claim 1, characterized in that: The report specifically includes: Substation circuit reliability assessment: Provide reliability indicators of the substation circuit as a whole and each key component, as well as reliability assessment results; Fault warning information: summarize recent fault warning information and provide detailed analysis and handling suggestions for fault warnings; Fault diagnosis results: List the detailed information of the fault that has occurred, and provide the detailed process and conclusion of the fault diagnosis, as well as repair suggestions and preventive measures; Summary and Recommendations: Summarize the key findings in the report and put forward targeted recommendations and improvement measures.

10. A method for managing and analyzing a reliability system of a power substation circuit, applied to a management and analyzing system for a reliability system of a power substation circuit as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: S1. Collect, organize and store all basic data related to the reliability of the substation circuit through the basic data module, and monitor the operating status of the substation circuit in real time through the data monitoring module to obtain real-time operating data; S2. Analyze the data using the data analysis module, specifically, conduct in-depth analysis of the basic data and real-time data through the basic data analysis submodule and the real-time data analysis submodule respectively; S3, the reliability evaluation module calculates the reliability index based on the results of the data analysis module, performs quantitative evaluation on the reliability of the substation circuit, and sends the evaluation results to the result output module; S4, the fault analysis module predicts the possible faults of the substation circuit based on the real-time monitoring data and data analysis results, determines the cause and location of the fault through fault diagnosis, sends the fault information to the result output module, and sends an early warning to the operation and maintenance management personnel; S5. The result output module automatically generates a detailed report based on the results of the reliability assessment module and the fault analysis module and sends it to the management personnel.

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