High-voltage open-type circuit breaker fault detection system

Abstract

The invention, which relates to the field of power monitoring, discloses a high-voltage open-type circuit breaker fault detection system comprising a sensor module, a data acquisition and transmission module, a data analysis and processing module, and a background monitoring module. The sensor module is electrically connected with the data acquisition and transmission module and is used for monitoring various operation state parameters of the circuit breaker in real time; the data acquisition and transmission module transmits state parameters acquired by the sensor module to the data analysis and processing module, and the data analysis and processing module analyzes the data and judges the fault type; the background monitoring module receives an analysis result of the data analysis and processing module, and displays real-time state parameters, states and fault alarm information of the circuit breaker through a man-machine interaction interface; by using the circuit breaker detection system, the operation state of the circuit breaker can be effectively evaluated, rapid and accurate fault judgment of the circuit breaker can be realized, and meanwhile, the background monitoring module can mine and analyze historical data, so that potential faults can be pre-judged, and preventive maintenance can be guided.

Description

Technical Field

[0001] The invention relates to the field of electric power monitoring, in particular to a high-voltage open circuit breaker fault detection system. Background Art

[0002] As the core control and protection device of the power system, the operational reliability of high-voltage circuit breakers is directly related to the overall safety and stability of the power grid. The equipment mainly undertakes dual functions in the power grid: one is to realize the flexible regulation of the system operation mode by switching lines or equipment; the other is to rely on the relay protection system to quickly isolate the fault area to prevent the scope of the accident from expanding. With the expansion of the scale of the power system and the improvement of the level of intelligence, if the circuit breaker fails to operate due to mechanical jamming, insulation degradation or electrical circuit abnormality, it may cause over-tripping, equipment damage and even large-scale power outages and other serious consequences. Statistics show that only the two types of failures of refusal to open and refusal to close account for 29.15% of the total circuit breaker failures, highlighting the importance of strengthening status monitoring and fault warning.

[0003] In the existing technology, the fault detection methods for high-voltage circuit breakers mostly rely on manual inspections and regular tests, which lack real-time performance and accuracy. Although the existing system has certain monitoring functions, its data processing capabilities are limited, making it difficult to accurately identify and warn of complex faults. An efficient and intelligent fault detection system is urgently needed to improve the safety level of the power grid.

[0004] In view of the above problems, the present invention provides a high-voltage open type circuit breaker fault detection system to solve the above problems. Summary of the invention

[0005] To achieve the above object, the present invention provides the following technical solutions: A high-voltage open circuit breaker fault detection system, comprising: a sensor module, a data acquisition and transmission module, a data analysis and processing module, and a background monitoring module;

[0006] The sensor module is electrically connected to the data acquisition and transmission module, and is used to monitor various operating status parameters of the circuit breaker in real time; the data acquisition and transmission module transmits the status parameters acquired by the sensor module to the data analysis and processing module, and the data analysis and processing module analyzes the data to determine the fault type;

[0007] The background monitoring module receives the analysis results of the data analysis and processing module, and displays the real-time status parameters, status and fault alarm information of the circuit breaker through a human-computer interaction interface.

[0008] Further, preferably, the sensor module includes: a current sensor, a voltage sensor, a temperature sensor and a vibration sensor;

[0009] The current sensor is used to collect the main circuit current of the circuit breaker, and the main circuit current is analyzed by the data analysis and processing module to determine the operating status of the circuit breaker; the voltage sensor is used to monitor the voltage status at both ends of the circuit breaker, and the voltage status is analyzed by the data analysis and processing module to determine whether the circuit breaker voltage is normal; the temperature sensor monitors the temperature of key parts of the circuit breaker in real time to prevent abnormal increase of the key parts;

[0010] The vibration sensor is attached to the circuit breaker housing and the operating mechanism, and is used to collect vibration signals during the circuit breaker opening and closing process. The vibration signal is analyzed by the data analysis and processing module to analyze the vibration characteristics and determine whether the mechanical parts are normal.

[0011] Further, preferably, the data acquisition and transmission module includes: a data acquisition unit, a data transmission unit;

[0012] The data acquisition unit is responsible for collecting and summarizing the analog signals of the current sensor, voltage sensor, temperature sensor and vibration sensor, and converting the analog signals into digital signals to ensure high-precision capture of subtle changes;

[0013] The data transmission unit transmits the digital signal to the data analysis and processing module through optical fiber and wireless communication encryption technology to ensure data security and integrity.

[0014] Further, preferably, the data analysis and processing module includes: a signal processing unit, a fault diagnosis unit;

[0015] The signal processing unit receives the digital signal, performs filtering and noise reduction preprocessing on the data transmitted by the digital signal, and extracts key characteristic parameters; the fault diagnosis unit evaluates the operating status of the circuit breaker based on the extracted key characteristic parameters, using a fault diagnosis algorithm and an expert system, and determines the type and severity of the fault by comparing it with a preset threshold.

[0016] Further, preferably, the key characteristic parameters are extracted by using Fourier transform combined with wavelet analysis to accurately capture the signal frequency domain characteristics, extract key parameters reflecting the operating status of the circuit breaker, and ensure the accuracy and reliability of fault diagnosis.

[0017] Further, preferably, the background monitoring module includes: a human-computer interaction interface and a database;

[0018] The human-computer interaction interface receives the analysis result data of the data analysis and processing module, receives the analysis result data in a graphical form, and displays the real-time data, status and fault alarm of the circuit breaker, so as to facilitate intuitive monitoring by operation and maintenance personnel;

[0019] The database stores the operating data, fault records and equipment files of the circuit breaker, and predicts the fault trend through historical data analysis.

[0020] Compared with the prior art, the present invention provides a high-voltage open circuit breaker fault detection system, which has the following beneficial effects:

[0021] 1. The sensor module monitors the multi-dimensional data of the circuit breaker, and the signal processing unit filters and pre-processes the relevant data to reduce noise, and extracts key characteristic parameters. The fault diagnosis unit uses the fault diagnosis algorithm and expert system based on the extracted key characteristic parameters to evaluate the operating status of the circuit breaker, and judges the fault type and severity by comparing with the preset threshold. This can achieve rapid and accurate fault detection of the circuit breaker, improve operation and maintenance efficiency, ensure stable operation of the power system, reduce maintenance costs, and extend the service life of equipment.

[0022] 2. Operation and maintenance personnel can adjust parameters and query historical data based on the graphical interface. The historical data in the database can be deeply mined to accurately predict potential failures of circuit breakers, guide preventive maintenance, extend the service life of equipment, and ensure the stable operation of the power system. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The figure is a flow chart of a high voltage open type circuit breaker fault detection system. DETAILED DESCRIPTION

[0024] Reference Figure 1 ,The present invention provides a technical solution: a high-voltage open circuit breaker fault detection system, including: a sensor module, a data acquisition and transmission module, a data analysis and processing module, and a background monitoring module;

[0025] The sensor module is electrically connected to the data acquisition and transmission module, and is used to monitor various operating status parameters of the circuit breaker in real time; the data acquisition and transmission module transmits the status parameters acquired by the sensor module to the data analysis and processing module, and the data analysis and processing module analyzes the data to determine the fault type;

[0026] The background monitoring module receives the analysis results of the data analysis and processing module, and displays the real-time status parameters, status and fault alarm information of the circuit breaker through a human-computer interaction interface.

[0027] The sensor module monitors the status information parameters of various parts of the circuit breaker in real time, including key parameters such as current, voltage, temperature and vibration, to ensure that the operating status of the circuit breaker is fully captured. Through the collaborative work of multiple sensors, the system can efficiently and accurately identify various faults and improve the reliability and safety of circuit breaker operation.

[0028] The key parameters collected are efficiently encoded and transmitted through the data acquisition and transmission module to ensure data integrity and real-time performance. The data analysis and processing module receives data from the data acquisition and transmission module and uses advanced algorithms to perform fusion analysis on multi-source data to further improve the accuracy and response speed of fault diagnosis.

[0029] The background monitoring module displays the analysis results in a graphical way, which is convenient for operation and maintenance personnel to quickly understand the operation status of the circuit breaker. At the same time, the data is centrally stored and managed. Through the historical records and trend analysis of circuit breaker data, potential faults can be predicted, maintenance strategies can be formulated in advance, the service life of equipment can be extended, and operation and maintenance costs can be reduced.

[0030] As a preferred embodiment, the sensor module includes: a current sensor, a voltage sensor, a temperature sensor and a vibration sensor;

[0031] The current sensor is used to collect the main circuit current of the circuit breaker. The main circuit current is analyzed by the data analysis and processing module to determine the operating state of the circuit breaker. It mainly determines whether the circuit breaker has overload, short circuit and other faults based on the current size, waveform and other parameters;

[0032] The voltage sensor is used to monitor the voltage status at both ends of the circuit breaker. The voltage status is analyzed by the data analysis and processing module to determine whether the circuit breaker voltage is normal. It mainly determines whether there are faults such as overvoltage and undervoltage, and whether the opening and closing status of the circuit breaker is normal based on the voltage amplitude, frequency and other parameters;

[0033] The temperature sensor monitors the temperature of key parts of the circuit breaker in real time to prevent abnormal temperature rise in key parts;

[0034] The vibration sensor is attached to the circuit breaker housing and the operating mechanism, and is used to collect vibration signals during the circuit breaker opening and closing process. The vibration signal is analyzed by the data analysis and processing module to analyze the vibration characteristics and determine whether the mechanical parts are normal, wherein the operating mechanism mainly includes the circuit breaker's opening and closing parts, transmission parts, etc.

[0035] It should be noted that the relevant data collected by the current sensor and the voltage sensor can accurately measure the loop resistance and determine the contact condition of the contacts. If the loop resistance is too large, it may cause poor contact of the contacts, causing local overheating and increasing the risk of failure.

[0036] In addition, by using vibration sensors to detect small abnormal vibrations during the opening and closing process, combined with current and voltage data, the system can more comprehensively diagnose mechanical and electrical faults inside the circuit breaker and improve diagnostic accuracy. Spectral analysis of vibration signals reveals the degree of mechanical wear, assists in predicting maintenance needs, and ensures long-term stable operation of the circuit breaker.

[0037] As a preferred embodiment, the data acquisition and transmission module includes: a data acquisition unit and a data transmission unit;

[0038] The data acquisition unit is responsible for collecting and summarizing the analog signals of the current sensor, voltage sensor, temperature sensor and vibration sensor, and converting the analog signals into digital signals to ensure high-precision capture of subtle changes;

[0039] The data transmission unit transmits the digital signal to the data analysis and processing module through optical fiber and wireless communication encryption technology to ensure data security and integrity.

[0040] As a preferred embodiment, the data analysis and processing module includes: a signal processing unit, a fault diagnosis unit;

[0041] The signal processing unit receives the digital signal, performs filtering and noise reduction preprocessing on the data transmitted by the digital signal, and extracts key characteristic parameters; the fault diagnosis unit evaluates the operating status of the circuit breaker based on the extracted key characteristic parameters, using a fault diagnosis algorithm and an expert system, and determines the type and severity of the fault by comparing it with a preset threshold.

[0042] As a preferred embodiment, the key characteristic parameters are extracted by using Fourier transform combined with wavelet analysis to accurately capture the signal frequency domain characteristics, extract key parameters reflecting the operating status of the circuit breaker, and ensure the accuracy and reliability of fault diagnosis.

[0043] As a preferred embodiment, the background monitoring module includes: a human-computer interaction interface and a database;

[0044] The human-computer interaction interface receives the analysis result data of the data analysis and processing module, receives the analysis result data in a graphical form, and displays the real-time data, status and fault alarm of the circuit breaker, so as to facilitate intuitive monitoring by operation and maintenance personnel; the database stores the operation data, fault records and equipment files of the circuit breaker, and predicts fault trends through historical data analysis.

[0045] Operation and maintenance personnel can adjust parameters and query historical data based on the graphical interface to improve operation and maintenance efficiency. After deep mining of historical data in the database, it can accurately predict potential failures of circuit breakers, guide preventive maintenance, extend the service life of equipment, and ensure stable operation of the power system.

[0046] In specific implementation, each sensor monitors the various states of the circuit breaker in real time, the data acquisition unit converts the analog signal into a digital signal, and the transmission unit transmits it to the background through optical fiber and wireless communication encryption. The signal processing unit filters and reduces noise on its signal, extracts key characteristic parameters, and the fault diagnosis unit uses algorithms and expert systems to evaluate the state of the circuit breaker based on the extracted key characteristic parameters. The human-computer interaction interface graphically displays the results, and the database stores data, which helps operation and maintenance personnel to monitor and preventively maintain efficiently.

[0047] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A high voltage open circuit breaker fault detection system, characterized in that: include: Sensor module, data acquisition and transmission module, data analysis and processing module, background monitoring module; The sensor module is electrically connected to the data acquisition and transmission module, and is used to monitor various operating status parameters of the circuit breaker in real time; the data acquisition and transmission module transmits the status parameters acquired by the sensor module to the data analysis and processing module, and the data analysis and processing module analyzes the data to determine the fault type; The background monitoring module receives the analysis results of the data analysis and processing module, and displays the real-time status parameters, status and fault alarm information of the circuit breaker through a human-computer interaction interface.

2. A high voltage open type circuit breaker fault detection system according to claim 1, characterized in that: The sensor module includes: a current sensor, a voltage sensor, a temperature sensor and a vibration sensor; The current sensor is used to collect the main circuit current of the circuit breaker, and the main circuit current is analyzed by the data analysis and processing module to determine the operating status of the circuit breaker; the voltage sensor is used to monitor the voltage status at both ends of the circuit breaker, and the voltage status is analyzed by the data analysis and processing module to determine whether the circuit breaker voltage is normal; the temperature sensor monitors the temperature of key parts of the circuit breaker in real time to prevent abnormal increase of the key parts; The vibration sensor is attached to the circuit breaker housing and the operating mechanism, and is used to collect vibration signals during the circuit breaker opening and closing process. The vibration signal is analyzed by the data analysis and processing module to analyze the vibration characteristics and determine whether the mechanical parts are normal.

3. A high voltage open type circuit breaker fault detection system according to claim 2, characterized in that: The data acquisition and transmission module includes: a data acquisition unit and a data transmission unit; The data acquisition unit is responsible for collecting and summarizing the analog signals of the current sensor, voltage sensor, temperature sensor and vibration sensor, and converting the analog signals into digital signals to ensure high-precision capture of subtle changes; The data transmission unit transmits the digital signal to the data analysis and processing module through optical fiber and wireless communication encryption technology to ensure data security and integrity.

4. A high voltage open type circuit breaker fault detection system according to claim 3, characterized in that: The data analysis and processing module includes: a signal processing unit and a fault diagnosis unit; The signal processing unit receives the digital signal, performs filtering and noise reduction preprocessing on the data transmitted by the digital signal, and extracts key characteristic parameters; the fault diagnosis unit evaluates the operating status of the circuit breaker based on the extracted key characteristic parameters, using a fault diagnosis algorithm and an expert system, and determines the type and severity of the fault by comparing it with a preset threshold.

5. A high voltage open circuit breaker fault detection system according to claim 4, characterized in that: The key characteristic parameters are extracted by using Fourier transform combined with wavelet analysis to accurately capture the signal frequency domain characteristics, extract key parameters reflecting the operating status of the circuit breaker, and ensure the accuracy and reliability of fault diagnosis.

6. A high voltage open type circuit breaker fault detection system according to claim 4, characterized in that: The background monitoring module includes: a human-computer interaction interface and a database; The human-computer interaction interface receives the analysis result data of the data analysis and processing module, receives the analysis result data in a graphical form, and displays the real-time data, status and fault alarm of the circuit breaker, so as to facilitate intuitive monitoring by operation and maintenance personnel; The database stores the operating data, fault records and equipment files of the circuit breaker, and predicts the fault trend through historical data analysis.

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