GIS fault early warning device and method, equipment and storage medium
Through sensor and data processing systems, the GIS isolation switch is monitored and fault warning is solved, and the problem of insufficient mechanical fault diagnosis of GIS isolation switch is achieved, achieving fast and accurate fault diagnosis.
Patent Information
- Application Number
- CN202410018253.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-05
- Publication Date
- 2025-07-25
AI Technical Summary
In the prior art, there are few researches on fault diagnosis of GIS isolation switches, especially insufficient mechanical fault diagnosis, resulting in long fault diagnosis time.
The sensor, data processing module and upper computer system are used to control the GIS isolating switch for opening and closing operations through the relay module to realize data acquisition in different states, and the MCU unit and ADC unit are used for analog-to-digital conversion. CS and RD read the converted data and upload it to the upper computer to judge the contact situation of the dynamic and static contacts for early warning.
It realizes online monitoring and diagnosis of the operational isolation switch, shortens the fault diagnosis time, and improves the efficiency and accuracy of fault diagnosis.
Smart Images
Figure CN120370144A_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of GIS disconnectors, and particularly relates to a GIS fault warning device, method, equipment, and storage medium. Background Art
[0002] The main faults of the disconnector in GIS are mainly divided into two categories: mechanical faults and discharge faults. Among them, mechanical faults account for a relatively large proportion, about 73% of all faults, mainly including mechanism jamming, transmission looseness, and incomplete opening and closing actions.
[0003] Currently, there is little research on the fault diagnosis technology of disconnectors in GIS, and there is no method for fault diagnosis of disconnectors in GIS. Summary of the Invention
[0004] The purpose of this application is to overcome the defects in the prior art and provide a GIS fault warning device, method, equipment, and storage medium.
[0005] A GIS fault warning device provided by this application includes: a sensor, a GIS disconnector, a data processing module, and a host computer;
[0006] The sensor is connected to the GIS disconnector, the GIS disconnector is connected to the data processing module, and the data processing module is connected to the host computer;
[0007] The GIS disconnector is controlled by a relay module to perform opening and closing operations, so as to realize data acquisition under different states of the GIS;
[0008] The data processing module uploads the analog quantity output by the sensor to the ADC unit via the MCU unit in the data processing module;
[0009] The ADC unit performs analog-to-digital conversion and saves the conversion data at a fixed sampling frequency;
[0010] The conversion data of the ADC unit is sequentially read through CS and RD and uploaded to the host computer;
[0011] The host computer judges the contact situation of the moving and static contacts according to the conversion data and gives a warning according to the contact situation.
[0012] Optionally, uploading the analog quantity output by the sensor to the ADC unit via the MCU unit in the data processing module further includes:
[0013] The AI1, AI3, and AI5 of the MCU unit receive the analog quantity signals of the Hall current sensor, and AI2, AI4, and AI6 receive the signals of the magnetic sensitive angular displacement sensor.
[0014] Optionally, the relay module receives a remote control signal through the data processing module.
[0015] Optionally, the ADC unit performs analog-to-digital conversion at a fixed sampling frequency, including:
[0016] Taking the average value of the conversion results of every 20 conversions of the ADC unit as the conversion result of this time.
[0017] Optionally, the host computer further includes:
[0018] Real-time display of current data and angular displacement data;
[0019] Remotely control the disconnector in the GIS to perform opening and closing operations.
[0020] Optionally, the steps of the ADC unit performing analog-to-digital conversion at a fixed sampling frequency include:
[0021] Enable CONT of the ADC_CR2 control register to make the ADC unit enter the continuous conversion mode;
[0022] Set the ADC conversion resolution to 12 and start analog-to-digital conversion.
[0023] Optionally, the sensor includes:
[0024] Convert the 4 - 20 mA of the analog signal to 0 - 50 A, and convert the 0 - 5 V output by the angular displacement sensor to 0 - 360°.
[0025] This application also provides a GIS fault warning method, including:
[0026] By controlling the opening and closing operations of the GIS disconnector, realize data acquisition under different states of the GIS;
[0027] Perform analog-to-digital conversion on the analog quantity output by the sensor at a fixed sampling frequency and save the conversion data;
[0028] Read the conversion data sequentially, judge the contact situation of the moving and static contacts according to the conversion data, and give a warning according to the contact situation.
[0029] This application provides a GIS fault warning device, including:
[0030] A memory for storing the computer executable program of the above-mentioned GIS fault warning method;
[0031] A processor is configured to read the executable program and execute operations of opening and closing the GIS disconnector to achieve data acquisition of the GIS under different states; perform analog-to-digital conversion on the analog quantity output by the sensor at a fixed sampling frequency and save the converted data; sequentially read the converted data and judge the contact condition of the moving and static contacts based on the converted data, and give an early warning according to the contact condition.
[0032] The present application also provides a storage medium storing a computer executable program, which is configured to be read by a processor and execute the steps of the above-mentioned GIS fault early warning method.
[0033] Advantages and beneficial effects of the present application:
[0034] A GIS fault early warning device provided by the present application includes: a sensor, a GIS disconnector, a data processing module and a host computer; the sensor is connected to the GIS disconnector, the GIS disconnector is connected to the data processing module, and the data processing module is connected to the host computer; the GIS disconnector is controlled to perform opening and closing operations through a relay module to achieve data acquisition of the GIS under different states; the data processing module uploads the analog quantity output by the sensor to the ADC unit via the MCU unit in the data processing module; the ADC unit performs analog-to-digital conversion at a fixed sampling frequency and saves the converted data; the converted data of the ADC unit is sequentially read through CS and RD and uploaded to the host computer; the host computer judges the contact condition of the moving and static contacts based on the converted data and gives an early warning according to the contact condition. The present application can perform online monitoring and diagnosis on the operating disconnector, and can perform data acquisition, data processing, data analysis and fault diagnosis during the opening and closing stages, shortening the fault diagnosis time. Description of the Drawings
[0035] Figure 1 is a schematic diagram of the GIS fault early warning device in the present application;
[0036] Figure 2 is a schematic diagram of the power supply circuit in the present application;
[0037] Figure 3 is a schematic diagram of the MCU circuit in the present application;
[0038] Figure 4 is a schematic diagram of the relay module in the present application;
[0039] Figure 5 is a schematic diagram of the wireless communication module in the present application; Detailed Embodiments
[0040] The present application will be further described below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present application and implement it.
[0041] The following content is all examples of the specific implementation process provided to detail the technical solution to be protected by the present application. However, the present application can also be implemented in other ways different from the descriptions herein. Under the guidance of the concept of the present application, those skilled in the art can use different technical means to implement the present application. Therefore, the present application is not limited by the following specific embodiments.
[0042] As Figure 1 shown, a GIS fault warning device mainly includes: a sensor 101, a GIS disconnector 102, a data processing module 103, and a host computer 104.
[0043] First, select appropriate Hall current sensors 101 and magnetosensitive angular displacement sensors 101, and install them on the GIS in corresponding installation manners. The magnetosensitive angular displacement sensor 101 can detect the rotation angle of an object relative to a certain point and is usually used for angle measurement in mechanical applications or motion control applications.
[0044] Then, correctly connect the GIS disconnector 102 to the data processing module 103 and start the work process.
[0045] The GIS fault warning device further includes a power supply module, as Figure 2 shown.
[0046] The power supply module includes: an AC-DC main power supply module: Input: 220V 50HZ alternating current. Output: DC 12V.
[0047] The AC-DC main power supply module is used to provide a stable DC power supply for data acquisition, sensor 101, and the wireless communication module. At the same time, it is also the main power supply for other power supply modules, mainly including:
[0048] On-board DC-DC conversion chip: Adopt the LM2596-ADJ module. Input: DC 12V. Output: Output a stable DC 5V power supply after processing. It is used to regulate and filter the power supply of the development board to ensure the power quality.
[0049] MD7533 module: Input: DC 5V power supply output by LM2596-ADJ. Output: DC 3.3V. It is used to provide a stable DC power supply for the ADC module to ensure the normal operation of the ADC module.
[0050] In the present application, the output ports of various sensors 101 are connected to the data processing module 103. The following will detail each part involved and its functions.
[0051] The output ports of various sensors 101 (Hall current sensor 101 and magnetosensitive angular displacement sensor 101) are responsible for outputting the analog quantities (such as current, voltage, angle, etc.) detected by the sensor 101 to the data processing module 103.
[0052] The data processing module 103 has the ability to receive and process data from multiple sensors 101 and is connected to the sensor 101 through corresponding interfaces. Specifically, the data processing module 103 includes:
[0053] A microcontroller unit (MCU unit) such as Figure 3 As shown, in this application, the MCU based on the Cortex-M3 core is adopted, with an operating frequency as high as 72MHZ and a large number of built-in peripherals, which can meet the requirements of high-speed and high-precision data processing.
[0054] The MCU data acquisition unit is responsible for receiving and processing the analog quantity signals output by the sensor 101.
[0055] Among them, the three interfaces AI1, AI3, and AI5 of the MCU unit respectively receive the analog quantity signals output by the Hall current sensor 101. The Hall current sensor 101 can detect the magnitude and direction of the current and is usually used for the monitoring and protection of the power application in this application. The three interfaces AI2, AI4, and AI6 are respectively connected to the signal lines of the magnetosensitive angular displacement sensor 101 to receive the analog quantity signals output by the angular displacement sensor 101.
[0056] Through the above connections, the data processing module 103 can realize the real-time acquisition, conversion, and processing of data from multiple sensors 101, providing strong support for the status monitoring and fault warning of the power application in this application.
[0057] This process starts from the AI1 to AI6 interfaces of the MCU, and these interfaces receive the analog quantity signals from various sensors 101. The analog quantity signal is a continuously changing physical quantity, such as voltage or current.
[0058] To process these analog signals, an ADC (analog-to-digital converter) unit is used. In this application, the preferred ADC unit is AD7656.
[0059] Features of AD7656: It has 16 independent analog-to-digital conversion channels. This means it can simultaneously receive, detect, and process 16 different external analog quantity signals. Up to 2.4MHz, indicating that this module can complete a large number of analog-to-digital conversion operations in a very short time. The conversion speed and accuracy are jointly controlled by the CONVST signal and the crystal oscillator inside the unit. In particular, when the CONVST pin is connected, all 16 sampling channels will be simultaneously activated and start sampling.
[0060] The ADC unit is connected to the MCU unit.
[0061] The ADC unit is equipped with high-speed parallel and serial interfaces, enabling it to communicate with a variety of microcontrollers. In this application, it establishes a connection with the MCU. To ensure smooth data transmission, channels AI1 to AI8 of the MCU unit are specifically initialized to analog input mode.
[0062] The MCU unit triggers the conversion process of the ADC unit by sending a specific start instruction. This is achieved by pulling up the CONVST signal to a high level. This high-level signal not only initiates the conversion process but also activates the CONT bit of the ADC_CR2 control register. Once this bit is activated, the ADC enters continuous conversion mode, which means it continuously performs analog-to-digital conversion operations rather than just executing once.
[0063] In this application, the resolution of the analog-to-digital conversion is set to 12 bits. This means that the digital output can vary between 0 and 4095, providing sufficient precision and dynamic range for the analog signal.
[0064] When the ADC unit completes the analog-to-digital conversion, the converted digital data is stored in the ADC_DR register inside the ADC unit. Subsequently, by operating the CS (chip select) and RD (read) signals, the AD conversion values of 8 channels can be sequentially read from this register. After completing the data reading, to prepare for the next round of analog-to-digital conversion, the CONVST signal is pulled down to a low level. This low-level signal marks the end of the current conversion cycle and prepares for the next cycle.
[0065] To meet different data acquisition requirements, this application provides the function of remotely controlling the opening and closing operations of the disconnector 102 in the GIS. This function is achieved through a relay module, as Figure 4 shown.
[0066] In this application, the relay module is a key component that allows this application to control the opening and closing of the GIS disconnector 102 as needed. This control is achieved by driving the forward and reverse rotation of the motor. The forward rotation of the driving motor closes the disconnector 102, while the reverse rotation opens it.
[0067] To implement the remote control function, the MCU unit is connected to a ULN2003 (ULN2003 is a high-voltage and high-current Darlington transistor array that can directly drive a relay) driver chip. The DO1 to DO6 interfaces of the MCU unit are connected to the IN1 to IN6 interfaces of the ULN2003 one by one. This connection allows the MCU unit to send instructions to the ULN2003, thereby controlling the opening and closing of the GIS disconnector 102.
[0068] When the MCU unit needs to control the disconnector 102, it outputs a high-level signal through the corresponding DO interface. After this high-level signal is received by the ULN2003, it triggers its internal working mechanism.
[0069] When the IN interface of the ULN2003 receives a high level, its corresponding output channel outputs a low level. This low level energizes the coil in the relay module. According to the principle of electromagnetic induction, the energized coil generates a magnetic field, and this magnetic field causes the relay output terminal to conduct. The conducting output terminal then drives the motor to rotate forward.
[0070] The forward rotation of the driving motor causes the disconnector 102 to complete the closing operation. Correspondingly, if an opening operation is to be performed, the MCU unit sends a reverse instruction to the ULN2003, thereby driving the motor to rotate in reverse and completing the opening action. All operations in this process are precisely controlled by the MCU unit through the ULN2003, ensuring the safety and reliability of this application.
[0071] As Figure 5 shown, the MCU unit needs to be connected to the USR-W610 through a serial port. The selected serial port here is RS485 because its communication speed is about twice that of RS232, making data transmission more efficient.
[0072] In this application, one USR-W610 is configured in server mode and connected to the MCU through RS485. The other USR-W610 is configured in client mode and connected to the host computer 104 through an RS485 to USB module.
[0073] After establishing the hardware connection, it is necessary to configure the two modules by accessing the built-in web page of the USR-W610.
[0074] The configured parameters mainly include: baud rate, data bits, stop bits, parity bits, working mode, and server address.
[0075] After the configuration is completed, both modules need to be restarted.
[0076] The MCU needs to pack data according to the inherent protocol format of the USR-W610. This means that the data must conform to a specific format for transmission.
[0077] When the host computer 104 needs to send instructions, it must also encapsulate the data in the same format as the USR-W610. This ensures that the data sent from the host computer 104 can be correctly received and parsed by the wireless transmission module.
[0078] Before starting data acquisition, a program needs to be written to perform range transformation on the sensor 101.
[0079] In this application, the 4-20mA current signal output by the current sensor 101 is converted to a range of 0-50A. The 0-5V voltage signal output by the angular displacement sensor 101 is converted to an angular range of 0-360°.
[0080] Before starting data acquisition, during the initialization process of each module's program, the multiplexing function of the pins is mainly configured. This means that some pins can be used for other functions in addition to their basic functions.
[0081] The initialization includes: setting the input mode of the IO to determine whether the pin is used as an input or output. Configuring the clock frequency, which is the basis for the operation of the microcontroller. Setting the prescaler coefficient, which is used to reduce the clock frequency to match other components or meet specific timing requirements. Configuring the count value of the timer, which is used to determine the working mode and duration of the timer.
[0082] First, call the initialization functions of each module to ensure that all modules are in the correct initial state.
[0083] Through a loop program, the average value of the ADC (analog-to-digital converter) module's conversion results for every 20 conversions is calculated and used as the conversion result for this time. This is to improve the conversion accuracy and reduce the influence of noise or other interferences.
[0084] The average conversion result is encapsulated in json format. JSON is a commonly used data exchange format that makes the data easier to read and process.
[0085] The encapsulated data is wirelessly transmitted to the host computer 104 through the serial communication module. The host computer 104 is usually a more powerful computer or device for further processing or displaying this data.
[0086] The software of the host computer 104 is mainly responsible for real-time display of the current data and angular displacement data collected from the hardware of this application.
[0087] In addition to real-time display, the software can also post-process data, which may include data analysis, storage, or other processing functions, including:
[0088] Remote control function:
[0089] Through the host computer 104 software, the user can remotely control the disconnector 102 in the GIS (Geographic Information of this application) to perform opening and closing operations.
[0090] The software also allows the user to make a preliminary judgment on the contact situation of the moving and static contacts, which helps to monitor the working state of the disconnector 102.
[0091] Composition modules of the host computer 104 software:
[0092] Three-phase state parameter and moving and static contact situation display module: This module can display the state parameters of the three phases and the contact situation of the moving and static contacts in real time.
[0093] Current curve and angular displacement curve real-time display module: This module can draw and display the curve graphs of current and angular displacement in real time, helping the user to more intuitively understand the change trend of the data.
[0094] Historical data query module: This module allows the user to query and review historical data, which may include past current, angular displacement records, or other relevant information.
[0095] Real-time information prompt module: This module can provide real-time information prompts for the user in a timely manner, such as warnings, errors, or other important notifications.
[0096] Opening and closing remote control module: Through this module, the user can remotely control the opening and closing operations of the disconnector 102 in the GIS.
[0097] This application also provides a GIS fault warning method, including:
[0098] By controlling the opening and closing operations of the GIS disconnector 102, data collection in different states of the GIS is realized;
[0099] The analog quantity output by the sensor 101 is subjected to analog-to-digital conversion and the converted data is saved at a fixed sampling frequency;
[0100] The converted data is read sequentially, and the contact situation of the moving and static contacts is judged according to the converted data, and early warning is carried out according to the contact situation.
[0101] This application provides a GIS fault warning device, including:
[0102] A memory for storing the computer-executable program of the above-mentioned GIS fault warning method;
[0103] A processor is configured to read the executable program and execute opening and closing operations by controlling the GIS disconnector 102 to achieve data acquisition in different states of the GIS; perform analog-to-digital conversion on the analog quantity output by the sensor 101 at a fixed sampling frequency and save the converted data; sequentially read the converted data, judge the contact condition of the moving and static contacts according to the converted data, and give an early warning according to the contact condition.
[0104] The present application further provides a storage medium storing a computer executable program, and the computer executable program is configured to be read by a processor and execute the steps of the above-mentioned GIS fault early warning method.
Claims
1. A GIS fault warning device, characterized in that, Including: A sensor, a GIS disconnector, a data processing module, and a host computer; The connection between the sensor and the GIS disconnector, the connection between the GIS disconnector and the data processing module, and the connection between the data processing module and the host computer; Controlling the opening and closing operations of the GIS disconnector through a relay module to achieve data acquisition under different states of the GIS; The data processing module performs analog-to-digital conversion on the analog quantity output by the sensor and saves the converted data; Sequentially reading the converted data through CS and RD, judging the contact situation of the moving and static contacts according to the converted data, and giving an early warning according to the contact situation.
2. The GIS fault warning device according to claim 1, wherein Uploading the analog quantity output by the sensor to the ADC unit via the MCU unit in the data processing module, and further including: The AI1, AI3, and AI5 of the MCU unit receive the analog quantity signals of the Hall current sensor, and AI2, AI4, and AI6 receive the signals of the magnetosensitive angular displacement sensor.
3. The GIS fault warning device according to claim 1, wherein The relay module receives remote control signals through the data processing module.
4. The GIS fault warning device according to claim 1, wherein The ADC unit performs analog-to-digital conversion at a fixed sampling frequency, including: Taking the average value of every 20 conversion results of the ADC unit as the conversion result of this time.
5. The GIS fault warning device according to claim 1, wherein The host computer, further including: Real-time displaying the current data and angular displacement data; Remotely controlling the opening and closing operations of the disconnector in the GIS.
6. The GIS fault warning device according to claim 1, wherein The steps for the ADC unit to perform analog-to-digital conversion at a fixed sampling frequency include: Enabling CONT of the ADC_CR2 control register to make the ADC unit enter the continuous conversion mode; Setting the ADC conversion resolution to 12 and starting analog-to-digital conversion.
7. The GIS fault warning device according to claim 2, wherein The sensor, including: Converting the 4 - 20 mA of the analog quantity signal to 0 - 50 A, and converting the 0 - 5 V output by the angular displacement sensor to 0 - 360°.
8. A GIS fault warning method, characterized in that, Including: Realizing data acquisition under different states of the GIS by controlling the opening and closing operations of the GIS disconnector; Performing analog-to-digital conversion on the analog quantity output by the sensor at a fixed sampling frequency and saving the converted data; Sequentially reading the converted data and judging the contact situation of the moving and static contacts according to the converted data, and giving an early warning according to the contact situation.
9. A GIS fault warning device, characterized in that, Including: A memory for storing the computer-executable program of the GIS fault warning method described in claim 8; A processor for reading the executable program and executing realizing data acquisition under different states of the GIS by controlling the opening and closing operations of the GIS disconnector; performing analog-to-digital conversion on the analog quantity output by the sensor at a fixed sampling frequency and saving the converted data; sequentially reading the converted data and judging the contact situation of the moving and static contacts according to the converted data, and giving an early warning according to the contact situation.
10. A storage medium, characterized in that, Stored with a computer-executable program, which is used to be read by a processor and execute the steps of the GIS fault warning method described in claim 8.