CN219369917U - Equipment partial discharge intelligent monitoring device - Google Patents
Equipment partial discharge intelligent monitoring device Download PDFInfo
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- CN219369917U CN219369917U CN202320441946.6U CN202320441946U CN219369917U CN 219369917 U CN219369917 U CN 219369917U CN 202320441946 U CN202320441946 U CN 202320441946U CN 219369917 U CN219369917 U CN 219369917U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission
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Abstract
The utility model belongs to the technical field of equipment partial discharge monitoring, and particularly relates to an intelligent equipment partial discharge monitoring device. The MCU, the sensor circuit, the wireless communication module and the wired communication module are arranged in the partial discharge monitoring device, so that the acquisition of partial discharge signals can be realized through the sensor circuit, partial discharge data can be generated through conditioning, the discharge type is calculated in the MCU, the partial discharge signals can be effectively acquired and processed through the wireless communication module and transmitted to external equipment, the discharge type is calculated locally in real time, the occupation of communication bandwidth is reduced, the efficiency of partial discharge monitoring is improved, and the partial discharge monitoring of the electric equipment with economy, simplicity and convenience and high sensitivity is realized; meanwhile, by arranging the alarm circuit, the alarm circuit can give an alarm in real time when monitoring data are abnormal, reminds personnel to timely treat partial discharge abnormality, and achieves effective protection of electrical equipment.
Description
Technical Field
The utility model belongs to the technical field of equipment partial discharge monitoring, and particularly relates to an intelligent equipment partial discharge monitoring device.
Background
With the rapid development of high-voltage electricity in China, the safety problem of high-voltage electric equipment is more and more emphasized. When high-voltage electric equipment works, bad compounds generated by discharge can damage insulators slowly, insulation is broken down, partial discharge occurs near the equipment, and sudden faults of the equipment are caused. Therefore, the partial discharge detection technology of the high-voltage electrical equipment is particularly important, and the operation safety of the high-voltage electrical equipment is concerned.
In the prior art, a general partial discharge monitoring device of high-voltage electrical equipment directly collects partial discharge signals through a passive partial discharge sensor and transmits collected data to a background server to complete further analysis so as to identify discharge level and discharge type, but the signals collected by the passive partial discharge sensor are weak, certain attenuation exists in the transmission process, and the direct transmission of the collected signals occupies more communication bandwidth, so that the efficiency of partial discharge monitoring is lower.
Disclosure of Invention
The utility model aims to overcome the defect of low monitoring efficiency of a method for collecting and directly transmitting partial discharge sensor signals by a partial discharge monitoring device in the prior art, thereby providing an intelligent monitoring device for equipment partial discharge.
An intelligent monitoring device for partial discharge of equipment comprises an MCU, and a sensor circuit, a wireless communication module, a wired communication module and an alarm circuit which are respectively connected with the MCU;
the sensor circuit comprises a front-end signal conditioning module, a logic control module, a data storage module and a data transmission module; the signal conditioning module is used for collecting partial discharge signals and conditioning and generating partial discharge data; the data transmission storage module is used for storing the partial discharge data; the data transmission module is used for transmitting the partial discharge data in the data storage module to the MCU; the logic control module is respectively connected with the front-end signal conditioning module, the data storage module and the data transmission module and controls the generation, storage and transmission of the partial discharge data;
the MCU is used for processing the partial discharge data and calculating the discharge type;
the wireless communication module is connected with the MCU and used for realizing data wireless communication between the MCU and external equipment;
the wired communication module is connected with the MCU and used for programming and debugging the MCU;
the alarm circuit is connected with the MCU and used for realizing alarm when monitoring data are abnormal.
Further, the front-end signal conditioning module is provided with a plurality of paths of signal processing circuits, and each path of signal processing circuit comprises a partial discharge sensor, a signal conditioning circuit and an analog-to-digital conversion circuit which are sequentially connected; the signal conditioning circuit comprises an operational amplifier and a band-pass filter which are sequentially connected.
Further, the device also comprises a power supply module, wherein the power supply module provides working power for each part of the device.
Further, the wired communication module includes a JTAG interface.
Further, the MCU comprises a clock circuit, wherein the clock circuit is used for providing an external clock for the MCU.
Further, the MCU comprises a reset circuit, and the reset circuit is connected with the MCU and used for resetting the MCU.
Further, the wireless communication module is a LoRa module, and wireless communication is realized through a LoRa communication technology.
Further, the model of the MCU is STM32F103C886.
The beneficial effects are that:
1. the MCU, the sensor circuit, the wireless communication module and the wired communication module are arranged in the partial discharge monitoring device, so that the acquisition of the partial discharge signal can be realized through the sensor circuit, partial discharge data can be generated by conditioning, the discharge type is calculated in the MCU, the partial discharge signal can be effectively acquired and processed through the wireless communication module and transmitted to external equipment, the discharge type is calculated locally in real time, the occupation of communication bandwidth is reduced, the efficiency of partial discharge monitoring is improved, and the partial discharge monitoring of the electric equipment with economy, simplicity and convenience and high sensitivity is realized; meanwhile, by arranging the alarm circuit, the alarm circuit can give an alarm in real time when monitoring data are abnormal, reminds personnel to timely treat partial discharge abnormality, and achieves effective protection of electrical equipment.
2. According to the utility model, the front-end signal conditioning module is provided with the multipath signal processing circuits, so that partial discharge signals are respectively collected and processed, and the monitoring reliability can be effectively improved; and an operational amplifier and a band-pass filter are arranged, and the collected weak signals are processed so that the discharge type can be effectively detected.
Drawings
FIG. 1 is a schematic block diagram of the overall structure of the present utility model;
fig. 2 is a schematic block diagram of a sensor circuit of the present utility model.
Detailed Description
In order to better understand the technical solutions in the present application, the following description will clearly and completely describe the technical solutions in the embodiments of the present application in conjunction with the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
Referring to fig. 1, the embodiment provides an intelligent monitoring device for partial discharge of equipment, which comprises an MCU, and a sensor circuit, a wireless communication module, a wired communication module and an alarm circuit which are respectively connected with the MCU;
referring to fig. 2, the sensor circuit includes a front-end signal conditioning module, a logic control module, a data storage module, and a data transmission module; the signal conditioning module is used for collecting partial discharge signals and conditioning and generating partial discharge data; the data transmission storage module is used for storing the partial discharge data; the data transmission module is used for transmitting the partial discharge data in the data storage module to the MCU; the logic control module is respectively connected with the front-end signal conditioning module, the data storage module and the data transmission module and controls the generation, storage and transmission of the partial discharge data;
the MCU is used for processing the partial discharge data and calculating the discharge type; preferably, the model of the MCU is STM32F103C886.
The wireless communication module is connected with the MCU and used for realizing data wireless communication between the MCU and external equipment; the wireless communication module is a LoRa module, and wireless communication is realized through a LoRa communication technology.
The wired communication module is connected with the MCU and used for programming and debugging the MCU; the wired communication module includes a JTAG interface.
The alarm circuit is connected with the MCU and used for realizing alarm when monitoring data are abnormal.
According to the embodiment, the MCU, the sensor circuit, the wireless communication module and the wired communication module are arranged in the partial discharge monitoring device, so that the acquisition of the partial discharge signal can be realized through the sensor circuit, partial discharge data can be generated through conditioning, the discharge type is calculated in the MCU, the partial discharge signal can be effectively acquired and processed through the wireless communication module and transmitted to external equipment, the discharge type is calculated locally in real time, the occupation of communication bandwidth is reduced, and the efficiency of partial discharge monitoring is improved; meanwhile, by arranging the alarm circuit, the alarm circuit can give an alarm in real time when monitoring data are abnormal, reminds personnel to timely treat partial discharge abnormality, and achieves effective protection of electrical equipment.
Specifically, the front-end signal conditioning module is provided with a plurality of paths of signal processing circuits, and each path of signal processing circuit comprises a partial discharge sensor, a signal conditioning circuit and an analog-to-digital conversion circuit which are sequentially connected; the signal conditioning circuit comprises an operational amplifier and a band-pass filter which are sequentially connected.
Because the partial discharge signals acquired by the partial discharge sensor are weak and the signals are further attenuated in the transmission process and are difficult to directly measure, an amplifying circuit is required to amplify the signals and is provided with a higher gain bandwidth product, so that the requirements of signal bandwidth and gain are met; in the embodiment, the partial discharge sensor adopts a passive device, so that the load capacity is low, and the amplifying circuit is designed to have higher input impedance so as to reduce the loss of a source signal and lower output impedance, thereby obtaining stronger load capacity; therefore, as a preferable choice of the present embodiment, the design amplification circuit includes two stages of operational amplifiers, each of which amplifies ten times; in this embodiment, the preferred operational amplifier model is LMH6609, the gain bandwidth product is 900MHz, and the conversion speed is 1400V/. Mu.s.
In the process of partial discharge monitoring, interference of environmental noise exists, so that a filter circuit is arranged to filter interference outside a measuring frequency band; the filter circuit comprises a band-pass filter, in the embodiment, the band of the band-pass filter is 500 KHz-22 MHz, the band-pass filter is formed by connecting a high-pass filter and a low-tube filter in series, and a second-order structure is selected, so that a higher attenuation rate is obtained.
The front-end signal conditioning module is provided with a plurality of paths of signal processing circuits for respectively collecting and processing partial discharge signals, so that the monitoring reliability can be effectively improved; and an operational amplifier and a band-pass filter are arranged, and the collected weak signals are processed so that the discharge type can be effectively detected.
As a further improvement of this embodiment, a power module is also included, which provides operating power to the various parts of the device. The MCU is also provided with a clock circuit, wherein the clock circuit is used for providing an external clock for the MCU. The MCU is connected with the power supply, and the MCU is used for resetting the power supply.
The foregoing is a further detailed description of the utility model in connection with the preferred embodiments, and it is not intended that the utility model be limited to the specific embodiments described. It will be apparent to those skilled in the art that several equivalent substitutions and obvious modifications can be made without departing from the spirit of the utility model, and the same should be considered to be within the scope of the utility model.
Claims (8)
1. The intelligent monitoring device for the partial discharge of the equipment is characterized by comprising an MCU, and a sensor circuit, a wireless communication module, a wired communication module and an alarm circuit which are respectively connected with the MCU;
the sensor circuit comprises a front-end signal conditioning module, a logic control module, a data storage module and a data transmission module; the signal conditioning module is used for collecting partial discharge signals and conditioning and generating partial discharge data; the data transmission storage module is used for storing the partial discharge data; the data transmission module is used for transmitting the partial discharge data in the data storage module to the MCU; the logic control module is respectively connected with the front-end signal conditioning module, the data storage module and the data transmission module and controls the generation, storage and transmission of the partial discharge data;
the MCU is used for processing the partial discharge data and calculating the discharge type;
the wireless communication module is connected with the MCU and used for realizing data wireless communication between the MCU and external equipment;
the wired communication module is connected with the MCU and used for programming and debugging the MCU;
the alarm circuit is connected with the MCU and used for realizing alarm when monitoring data are abnormal.
2. The intelligent monitoring device for the partial discharge of equipment according to claim 1, wherein the front-end signal conditioning module is provided with a plurality of signal processing circuits, and each signal processing circuit comprises a partial discharge sensor, a signal conditioning circuit and an analog-to-digital conversion circuit which are sequentially connected; the signal conditioning circuit comprises an operational amplifier and a band-pass filter which are sequentially connected.
3. The intelligent monitoring device for partial discharge of equipment of claim 1, further comprising a power module that provides operating power to various parts of the device.
4. The device partial discharge intelligent monitoring apparatus of claim 1, wherein the wired communication module comprises a JTAG interface.
5. The device partial discharge intelligent monitoring apparatus of claim 1, further comprising a clock circuit for providing an external clock to the MCU.
6. The device partial discharge intelligent monitoring apparatus of claim 1, further comprising a reset circuit connected to the MCU for resetting the MCU.
7. The intelligent monitoring device for partial discharge of equipment according to claim 1, wherein the wireless communication module is a LoRa module, and wireless communication is realized through a LoRa communication technology.
8. The intelligent monitoring device for partial discharge of equipment according to claim 1, wherein the model number of the MCU is STM32F103C886.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320441946.6U CN219369917U (en) | 2023-03-10 | 2023-03-10 | Equipment partial discharge intelligent monitoring device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320441946.6U CN219369917U (en) | 2023-03-10 | 2023-03-10 | Equipment partial discharge intelligent monitoring device |
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| Publication Number | Publication Date |
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| CN219369917U true CN219369917U (en) | 2023-07-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202320441946.6U Active CN219369917U (en) | 2023-03-10 | 2023-03-10 | Equipment partial discharge intelligent monitoring device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117309766A (en) * | 2023-10-20 | 2023-12-29 | 苏州宣雄智能科技有限公司 | Visual detection method and system for product surface defects |
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2023
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117309766A (en) * | 2023-10-20 | 2023-12-29 | 苏州宣雄智能科技有限公司 | Visual detection method and system for product surface defects |
| CN117309766B (en) * | 2023-10-20 | 2024-03-29 | 苏州宣雄智能科技有限公司 | Visual detection method and system for product surface defects |
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