CN116930736A - On-load tap-changer state monitoring method, system, terminal and medium - Google Patents
On-load tap-changer state monitoring method, system, terminal and medium Download PDFInfo
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
- G01R31/3271—Testing of circuit interrupters, switches or circuit-breakers of high voltage or medium voltage devices
- G01R31/3275—Fault detection or status indication
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
- G01R31/3271—Testing of circuit interrupters, switches or circuit-breakers of high voltage or medium voltage devices
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
- G01R31/3271—Testing of circuit interrupters, switches or circuit-breakers of high voltage or medium voltage devices
- G01R31/3272—Apparatus, systems or circuits therefor
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
- G01R31/3277—Testing of circuit interrupters, switches or circuit-breakers of low voltage devices, e.g. domestic or industrial devices, such as motor protections, relays, rotation switches
- G01R31/3278—Testing of circuit interrupters, switches or circuit-breakers of low voltage devices, e.g. domestic or industrial devices, such as motor protections, relays, rotation switches of relays, solenoids or reed switches
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Abstract
The application discloses a method for monitoring the state of an on-load tap-changer, and discloses a system, a terminal and a medium with the method for monitoring the state of the on-load tap-changer, wherein the method for monitoring the state of the on-load tap-changer provides a system and a method for monitoring the mechanical state of the on-load tap-changer, which can realize on-line monitoring of the state of the on-load tap-changer of a transformer under the electrified state of the on-load tap-changer of the transformer and ensure the safe operation of the transformer. The device can be widely used for monitoring the state of the tap switch of the on-load tap-changing transformer above 220kV, can measure parameters such as mechanical vibration, driving motor torque, driving motor current and the like of the tap switch of the transformer in real time, and transmits the parameters to a background diagnosis system, and an expert system judges the running state of equipment according to the data information, discovers hidden danger in running and avoids unplanned power failure and damage of power equipment.
Description
Technical Field
The application relates to the technical field of on-line monitoring of electrical equipment, in particular to a method and a system for monitoring the state of an on-load tap-changer.
Background
An On-Load Tap-Changer (OLTC) is one of the main components of the transformer, the operating state of which is directly related to the operational safety of the transformer and even of the whole power network. The device can realize stable voltage regulation under the loaded or excited state of the on-load voltage regulating transformer, is an electrical device applied to tapping conversion and connection of a transformer coil, and plays important roles of stabilizing the load center voltage, increasing the flexibility of a power grid, improving the quality of electric energy and the like.
The tapping switch is an extremely complex and precise mechanical element, the tapping switch is frequently executed, taking a direct current transmission system at two ends of +/-800 kV as an example, 48 OLTC (on-line voltage control) installed inside the converter transformer are arranged on average each day, 500 voltage regulating operations are executed, huge mechanical and current impact is born in the action process of the tapping switch, and mechanical faults such as contact arc, looseness and jamming of parts are easily caused. In recent years, the companies in the national network and the south network have multiple extra-high voltage transformers OLTC discharge accidents successively, the light OTLC is damaged, the line tripping loss transmits power, the heavy transformer is burnt and damaged, not only huge economic loss is caused, but also very bad social influence is generated, and related units bear great operation and maintenance pressure.
In the OLTC action process, vibration, driving motor current, torque conduction and transmission shaft rotation signals are generated, rich information in the operation process is contained in the signals, and the mechanical performance of the tapping switch can be obtained by detecting and analyzing the characteristics and the change rule of the signals. State monitoring research based on tap switch vibration and motor current signal association analysis has achieved a certain achievement in China so far, a certain experience is accumulated in the aspect of applicability of a signal processing method, but researches on analyzing a tap switch vibration signal, a driving motor current signal, a moment and a rotation state signal through comprehensive processing are few, most of the researches are stopped at a laboratory stage or only applied to power equipment with lower voltage level, and an online monitoring technology of a tap switch of an extra-high voltage large-sized oil filling device is still immature, so that a lot of practical problems are needed to be solved.
Along with the rapid development of ultra-high voltage transmission engineering, high-voltage high-capacity oil-filled equipment has higher requirements on the monitoring of a tap changer, and the fault mechanism research, the fault characteristic analysis, the monitoring and the fault diagnosis research of the equipment need to be more deeply researched. Therefore, it is necessary to research on an online sensing technology of an OLTC typical insulation defect reasonably and effectively, develop an online sensing device and a fault early warning system, and realize comprehensive, real-time, effective and intelligent sensing and fault early warning of the running state of the on-load tap-changer through an advanced sensing technology, an artificial intelligence technology and an information technology, so as to ensure the running safety of equipment.
Disclosure of Invention
The present application aims to solve at least one of the technical problems existing in the prior art. Therefore, the application provides a method for monitoring the state of the on-load tap-changer, which can measure the operation parameters of the transformer tap-changer and transmit the operation parameters to a background diagnosis system, and the background diagnosis system performs detailed re-diagnosis according to the operation parameters to confirm the operation state so as to avoid unplanned power failure and damage of power equipment.
The application also provides a system, a terminal and a storage medium of the on-load tap-changer state monitoring method.
An on-load tap changer state detecting method according to an embodiment of the first aspect of the present application is characterized by comprising the steps of:
acquiring operation data of a transformer on-load tap-changer;
processing the operation data to obtain processed operation data and storing the processed operation data;
based on the processed operation data, realizing the pre-diagnosis of the on-load tap-changer, and obtaining a preliminary diagnosis result;
and sending the operation data and the primary diagnosis result to a background system for more detailed re-diagnosis so as to verify the primary diagnosis result and obtain a final diagnosis result.
The method for detecting the state of the on-load tap-changer has at least the following beneficial effects:
the application provides a system and a method for monitoring the mechanical state of an on-load tap-changer, which can realize on-line monitoring of the state of the on-load tap-changer of a transformer under the electrified state of the on-load tap-changer of the transformer and ensure the safe operation of the transformer.
According to some embodiments of the application, the operational data includes at least one of: vibration, current, drive shaft torque data for the on-load tap changer.
According to some embodiments of the application, the step of performing pre-diagnosis of the on-load tap-changer based on the processed operation data to obtain a preliminary diagnosis result further includes:
and carrying out early warning based on the preliminary diagnosis result.
Based on the operation data, the pre-diagnosis of the on-load tap-changer is realized, and the step of obtaining a preliminary diagnosis result comprises the following steps:
designing a test scheme according to a simulation method of typical mechanical faults;
acquiring the characteristics of operation data in the switching process under normal and typical defects of the on-load tap-changer;
researching typical change rules of the processed operation data and typical mechanical faults;
matching the typical change rule with the same part in the operation data;
and taking the matched result as a preliminary diagnosis result.
According to some embodiments of the present application, the typical mechanical faults include problems with drive shaft looseness simulation, spring energy storage starvation, contact looseness, contact wear, arc looseness, and drive mechanism bevel gear jamming.
According to some embodiments of the present application, in the step of researching the typical change rule of the operation data, the characteristics of the operation data in the normal and typical defect switching process of the on-load tap-changer are mainly analyzed from the angles of the time domain, the frequency domain and the Gao Weixiang space, so as to analyze the characteristics of non-stationarity, strong time variability and low-frequency chaotic dynamics of the signal.
An on-load tap changer status monitoring system according to an embodiment of the second aspect of the application is characterized by comprising:
the data receiving module is used for acquiring the operation data of the on-load tap-changer of the transformer;
the data processing module is capable of processing the operation data to obtain processed operation data and carrying out the operation data;
the pre-diagnosis module is used for realizing the pre-diagnosis of the on-load tap-changer based on the processed operation data to obtain a preliminary diagnosis result;
and the re-diagnosis module is used for sending the processed operation data and the primary diagnosis result to a background system for performing more detailed re-diagnosis so as to verify the primary diagnosis result and obtain a final diagnosis result.
According to some embodiments of the application, the pre-diagnosis module is further capable of performing an early warning based on the preliminary diagnosis result.
According to some embodiments of the application, the pre-diagnosis module comprises:
the scheme making module can design a test scheme according to a simulation method of a typical fault according to a typical mechanical fault;
the characteristic analysis module is used for acquiring the characteristics of the operation data in the normal and typical defect down-switching process of the on-load tap-changer;
the rule induction module can study the typical change rule of the processed operation data and typical mechanical faults;
the characteristic matching module is used for matching the typical change rule with the same part in the operation data;
and the result output module can take the matched result as a preliminary diagnosis result.
According to some embodiments of the present application, the typical mechanical faults include problems with drive shaft looseness simulation, spring energy storage starvation, contact looseness, contact wear, arc looseness, and drive mechanism bevel gear jamming.
According to a third aspect of the present application, there is provided a terminal comprising: the on-load tap-changer state monitoring system comprises a memory, a processor and a computer program stored in the memory and capable of running on the processor, wherein the processor executes the on-load tap-changer state monitoring method.
According to a fourth aspect of the present application, there is provided a computer readable storage medium storing computer executable instructions for performing the on-load tap changer status monitoring method described above.
Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application.
Drawings
The foregoing and/or additional aspects and advantages of the application will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
FIG. 1 is a schematic diagram illustrating steps of a monitoring method of an on-load tap-changer according to an embodiment of the application;
FIG. 2 is a schematic diagram illustrating steps of a method for simulating and testing mechanical defects of an on-load tap-changer according to an embodiment of the application;
FIG. 3 is a schematic diagram illustrating steps of a signal feature extraction technique of an on-load tap-changer according to an embodiment of the application;
fig. 4 is a schematic diagram of a torque sensor power supply system of an on-load tap-changer monitoring device according to an embodiment of the present application;
fig. 5 is a circuit diagram of a torque sensor of an on-load tap-changer monitoring device according to an embodiment of the application.
Detailed Description
Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the application.
Referring to fig. 1, a first aspect of the present application provides a method for monitoring a state of an on-load tap changer, the method comprising:
and step S100, acquiring operation data of the on-load tap-changer of the transformer.
And step 200, processing the operation data to obtain and store the processed operation data.
And step S300, based on the processed operation data, realizing the pre-diagnosis of the on-load tap-changer, and obtaining a preliminary diagnosis result.
And step 400, transmitting the processed operation data and the primary diagnosis result to a background system for more detailed re-diagnosis so as to verify the primary diagnosis result and obtain a final diagnosis result.
It will be appreciated that steps S100 to S400 are events within one period of the monitoring process, and continuous monitoring can be achieved by repeating the above method. In order to explain the operation principle of the monitoring method in one period in the present application in detail, the procedure thereof will be explained in detail.
The method comprises the following steps:
and step S100, acquiring operation data of the on-load tap-changer of the transformer.
Generally, the operation data mainly include vibration, current, and drive shaft torque data of the on-load tap changer.
And step 200, processing the operation data to obtain and store the processed operation data.
Converting the acquired data signals to obtain specific data and summarizing the specific data; processing the summarized data to eliminate error items; and then analyzing and synthesizing the data, and uniformly storing the data to facilitate subsequent retrieval.
And step S300, based on the processed operation data, realizing the pre-diagnosis of the on-load tap-changer, and obtaining a preliminary diagnosis result.
The simulation method of the typical mechanical fault is researched, a test scheme is designed, monitoring data of acoustic vibration, driving motor current, torque and rotation angle signals in the switching process under the normal and typical defects of the OLTC are obtained, and the change rule of the signals in the developing process of the OLTC fault is researched.
Typical faults of parts of the action of the change-over switch in the OLTC comprise transmission shaft loosening simulation, spring loosening simulation, insufficient spring energy storage, loosening of a contact, contact wear, loosening of an arc plate, jamming of a bevel gear of a transmission mechanism and the like. Referring to fig. 2, the test method is as follows:
performing full gear test under the normal state of the OLTC;
estimating whether an internal fault or an external fault is based on the vibration signal and the current motor signal;
1) If the internal fault is detected, the following internal fault causes are tested in sequence: the problem of insufficient energy storage of the spring, abrasion of fixed contacts on two sides, loosening of an arc moving contact, abrasion of a transition contact, loosening of soft connection, loosening of an arc plate and deformation/fracture of a connecting taper rod;
2) If an external fault problem, the following external fault causes are tested: slide and jam.
And step 400, transmitting the processed operation data and the primary diagnosis result to a background system for re-diagnosis so as to verify the primary diagnosis result and obtain a final diagnosis result.
Further, in the switching process of the on-load tap-changer, the characteristic quantity extraction method of the signals of acoustic vibration, driving motor current, torque and rotation angle mainly develops researches on the characteristics of non-stationarity, strong time variability and low-frequency chaotic dynamics of the signals from the angles of time domain, frequency domain, gao Weixiang space and the like.
And extracting signal characteristics of acoustic vibration, driving motor current, torque and rotation angle under the OLTC typical mechanical defects, and analyzing the association relation between the signal characteristics and the mechanical defects. Based on an artificial intelligence algorithm, a typical mechanical fault diagnosis method research of the OLTC is developed.
Referring to fig. 3, the principle of feature extraction and fault diagnosis is as follows:
extracting a test set and a sample set based on the data sample, and then manufacturing a decision tree diagnosis model for the test set and the training set based on a CART algorithm; and diagnosing the unknown class data based on the diagnosis model to obtain a diagnosis result.
According to some preferred embodiments of the application, the method is implemented in the form of a device, and is specifically as follows:
the on-load tap-changer monitoring device acquires vibration and driving motor current data of the transformer tap-changer through a wired sensor, and acquires driving shaft torque data through a wireless sensor. And the obtained data is preprocessed, and the mechanical characteristics of the tapping switch of the transformer are simply pre-diagnosed, so that the functions of early warning and alarming are realized. And transmitting the information to the background through the Ethernet, and diagnosing the faults of the split switch by the background system according to a multi-parameter fault diagnosis algorithm.
The vibration and motor current sensor is connected with the monitoring device through the BNC interface and is used for outputting analog signals, and the torque and rotation speed sensor is connected with the monitoring device through the wireless interface and is used for outputting digital signals. The device communicates with the background via ethernet. The device comprises a power port, an indicator lamp, an alarm lamp and other interfaces. Wherein the power port is an AC/DC 85-265V input; the indicator lamp can display signal receiving and transmitting instructions, and the device normally operates; the alarm lamp can indicate abnormal alarm.
(1) The device is provided with a high-speed and low-speed acquisition card
The device is provided with a high-speed acquisition card and a low-speed acquisition card simultaneously, wherein the high-speed card can be externally connected with a local discharge high-frequency signal, the low-speed card can be externally connected with signals such as current, torque, vibration and the like, and the class 2 acquisition card performs data processing through an internal communication mode, so that the performance of the device is ensured. The high-speed acquisition card is designed for margin, and the acquisition main board can be not required to be changed in consideration of the possibility of increasing the acquisition function of the sensor in the future.
(2) Wireless power supply for torque sensor
Referring to fig. 4, the induction power supply system is composed of a moving ring and a stationary ring, the stationary ring portion including: the device comprises a transmitting module, a transmitting coil and a mounting ring; the moving ring portion includes: the receiving coil, the receiving module and the mounting ring. Short-range (1-100 cm) wireless power transmission. When the rotary ring works, the rotary ring rotates along with the shaft, the stationary ring is externally connected with a 220V power supply, electricity is transmitted to the rotary ring by the stationary ring in an electromagnetic induction mode, and after the rotary ring is processed by a circuit, the electricity is provided for a wireless sensor rotating along with the shaft, so that the rotary ring continuously and stably works.
Referring to fig. 5, the torque sensor adopts a strain gauge electrical measurement technology to form a strain bridge on the elastic shaft, and the strain bridge is provided with a power supply to measure the electric signal of the torsion of the elastic shaft. After the strain signal is amplified, the strain signal is converted into a torque signal proportional to the torsion strain through the pressure-frequency conversion.
In a second aspect of the present application, there is provided an on-load tap-changer condition monitoring system, the system 60 comprising: a data receiving module 601, a data processing module 602, a pre-diagnosis module 603, and a re-diagnosis module 604.
The data receiving module 601 is configured to obtain operation data of the on-load tap changer of the transformer;
the data processing module 602 is capable of processing the operation data to obtain and store the processed operation data;
the pre-diagnosis module 603 is used for realizing pre-diagnosis of the on-load tap-changer based on the processed operation data to obtain a preliminary diagnosis result;
and a re-diagnosis module 604, configured to send the processed operation data and the preliminary diagnosis result to a background system for performing more detailed re-diagnosis to verify the preliminary diagnosis result, so as to obtain a final diagnosis result.
According to the embodiment of the application, the on-load tap-changer state monitoring system is used for analyzing the vibration, voiceprint, motor current and rotating speed information of the on-load tap-changer, so that the running state of the on-load tap-changer is confirmed, and an equipment foundation is provided for the stable running of a power system.
In a third aspect of the present application, there is provided a terminal comprising: the on-load tap changer monitoring system comprises a memory, a processor and a computer program stored in the memory and capable of running on the processor, wherein the processor is used for realizing the on-load tap changer monitoring method when executing the computer program.
In particular, the processor may be a CPU, general purpose processor, DSP, ASIC, FPGA or other programmable logic device, transistor logic device, hardware component, or any combination thereof. Which may implement or perform the various exemplary logic blocks, modules and circuits described in connection with this disclosure. A processor may also be a combination that performs computing functions, e.g., including one or more microprocessors, a combination of a DSP and a microprocessor, and the like.
In particular, the processor is coupled to the memory via a bus, which may include a path for communicating information. The bus may be a PCI bus or an EISA bus, etc. The buses may be divided into address buses, data buses, control buses, etc.
The memory may be, but is not limited to, ROM or other type of static storage device, RAM or other type of dynamic storage device, which can store static information and instructions, EEPROM, CD-ROM or other optical disk storage, optical disk storage (including compact disk, laser disk, optical disk, digital versatile disk, blu-ray disc, etc.), magnetic disk storage or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer.
In the alternative, the memory is used for storing the code of the computer program for executing the scheme of the application, and the execution is controlled by the processor. The processor is configured to execute application code stored in the memory to implement the actions of the on-load tap-changer monitoring system.
Yet another embodiment of the present application provides a computer-readable storage medium storing computer-executable instructions for performing the on-load tap changer monitoring method described above and shown in fig. 1.
The above described apparatus embodiments are merely illustrative, wherein the units illustrated as separate components may or may not be physically separate, i.e. may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
Those of ordinary skill in the art will appreciate that all or some of the steps, systems, and methods disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). The term computer storage media includes both volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, as known to those skilled in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can be accessed by a computer. Furthermore, as is well known to those of ordinary skill in the art, communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media.
While the preferred embodiment of the present application has been described in detail, the present application is not limited to the above embodiment, and those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present application, and these equivalent modifications or substitutions are included in the scope of the present application as defined in the appended claims.
The embodiments of the present application have been described in detail with reference to the accompanying drawings, but the present application is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present application.
Claims (12)
1. The on-load tap-changer state monitoring method is characterized by comprising the following steps of:
acquiring operation data of a transformer on-load tap-changer;
processing the operation data to obtain processed operation data and storing the processed operation data;
based on the processed operation data, realizing the pre-diagnosis of the on-load tap-changer, and obtaining a preliminary diagnosis result;
and sending the processed operation data and the primary diagnosis result to a background system for re-diagnosis so as to verify the primary diagnosis result and obtain a final diagnosis result.
2. The method of claim 1, wherein the operational data comprises at least one of: vibration, current, drive shaft torque data for the on-load tap changer.
3. The method of claim 1, wherein the step of performing a pre-diagnosis of the on-load tap-changer based on the processed operational data to obtain a preliminary diagnosis result further comprises:
and carrying out early warning based on the preliminary diagnosis result.
4. The method of claim 1, wherein the step of performing a pre-diagnosis of the on-load tap-changer based on the processed operation data to obtain a preliminary diagnosis result comprises:
designing a test scheme according to a simulation method of typical mechanical faults;
acquiring the characteristics of operation data in the switching process under normal and typical defects of the on-load tap-changer;
researching typical change rules of the processed operation data and typical mechanical faults;
matching the typical change rule with the same part in the operation data;
and taking the matched result as a preliminary diagnosis result.
5. The method of claim 4, wherein the typical mechanical failure includes problems of spring energy storage starvation, contact loosening, contact wear, arc loosening, and gear bevel gear jamming.
6. The method of claim 4, wherein the step of obtaining the characteristic of the operation data in the normal and typical defect down-switching process of the on-load tap-changer, and researching the typical change rule of the operation data, analyzes the characteristics of non-stationarity, strong time-variability and low-frequency chaotic dynamics of the signal mainly from the angles of time domain, frequency domain and Gao Weixiang space.
7. An on-load tap-changer condition monitoring system, comprising:
the data receiving module is used for acquiring the operation data of the on-load tap-changer of the transformer;
the data processing module is capable of processing the operation data to obtain and store the processed operation data;
the pre-diagnosis module is used for realizing the pre-diagnosis of the on-load tap-changer based on the processed operation data to obtain a preliminary diagnosis result;
and the re-diagnosis module is used for sending the processed operation data and the primary diagnosis result to a background system for performing more detailed re-diagnosis so as to verify the primary diagnosis result and obtain a final diagnosis result.
8. The system of claim 7, wherein the pre-diagnostic module is further configured to perform an early warning based on the preliminary diagnostic result.
9. The system of claim 7, wherein the pre-diagnostic module comprises:
the scheme making module can design a test scheme according to a simulation method of a typical fault according to a typical mechanical fault;
the characteristic analysis module is used for acquiring the characteristics of the operation data in the normal and typical defect down-switching process of the on-load tap-changer;
the rule induction module can study the typical change rule of the processed operation data and typical mechanical faults;
the characteristic matching module is used for matching the typical change rule with the same part in the operation data;
and the result output module can take the matched result as a preliminary diagnosis result.
10. The system of claim 9, wherein the typical mechanical failure includes problems of spring under-storage, contact loosening, contact wear, arc loosening, and drive mechanism bevel gear jamming.
11. A terminal, comprising: a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor executes the computer program to implement the method of any one of claims 1 to 6.
12. A computer readable storage medium storing computer executable instructions for performing the method of any one of claims 1 to 6.
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| CN117434437A (en) * | 2023-12-14 | 2024-01-23 | 清华四川能源互联网研究院 | Transformer on-load tap-changer switching program analysis method |
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| CN117434437A (en) * | 2023-12-14 | 2024-01-23 | 清华四川能源互联网研究院 | Transformer on-load tap-changer switching program analysis method |
| CN117434437B (en) * | 2023-12-14 | 2024-03-15 | 清华四川能源互联网研究院 | Transformer on-load tap-changer switching program analysis method |
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