Lightning protection counter monitoring device

Abstract

The utility model relates to the field of power equipment monitoring, and discloses a lightning protection counter monitoring device, which comprises a casing, a circuit board and a voiceprint acquisition module. The top of the housing is provided with a grounding bolt. The circuit board is arranged in the machine shell, and a signal processing module, a counting module and a microcontroller are integrated on the circuit board; and the voiceprint acquisition module is arranged on the outer side of the shell and is electrically connected with the signal processing module. According to the utility model, the voiceprint acquisition module acquires a sound signal when the lightning arrester acts, the sound signal is analyzed and processed by the signal processing module and the microcontroller, the action condition of the lightning arrester can be monitored in real time, and the counter and the display module are used for displaying, so that a worker can conveniently know the working state of the lightning arrester in time, and the working efficiency is improved. And the safety and the reliability of the power system are improved.

Description

Technical Field

[0001] The utility model relates to the field of power equipment monitoring, and in particular to a lightning arrester counter monitoring device. Background Art

[0002] In a power system, a lightning arrester is an important device for protecting electrical equipment from lightning overvoltage damage. Due to various reasons such as high-voltage impact, construction industry, and component life limitation, the failure rate of lightning arresters is relatively high, posing certain potential safety hazards to the protected electrical equipment. A lightning arrester counter is used to monitor the operation times of the lightning arrester and its internal insulation performance to evaluate the health status and remaining life of the lightning arrester. However, the traditional lightning arrester counter has a single function and can only record the operation times and the magnitude of the ground leakage current, and cannot effectively monitor the fault types of the lightning arrester. Content of the Utility Model

[0003] The purpose of the utility model is to provide a lightning arrester counter monitoring device, which can effectively monitor the fault types of the lightning arrester.

[0004] To achieve the above purpose, the utility model provides a lightning arrester counter monitoring device, including:

[0005] A casing, on the top of which a grounding bolt is provided;

[0006] A circuit board, which is arranged inside the casing, and a signal processing module, a counting module and a microcontroller are integrated on the circuit board;

[0007] A voiceprint acquisition module, which is arranged outside the casing and is electrically connected to the signal processing module;

[0008] The voiceprint acquisition module is used to acquire the sound signal generated when the lightning arrester operates and convert it into an electrical signal for transmission to the signal processing module;

[0009] The signal processing module is used to process the electrical signal acquired by the voiceprint acquisition module and transmit the processed electrical signal to the microcontroller;

[0010] The microcontroller is used to analyze and process the electrical signal transmitted by the signal processing module, judge the operation situation of the lightning arrester, and transmit the processing result to the counting module;

[0011] The counting module is used to record the operation times of the lightning arrester.

[0012] Preferably, the signal processing module includes a circuit amplification module and an AD conversion module;

[0013] The circuit amplification module is used to amplify the weak mV signal collected by the voiceprint acquisition module into a V-level signal;

[0014] The AD conversion module is used to perform AD conversion on the amplified signal.

[0015] Preferably, the AD conversion module is a 16-bit AD converter.

[0016] Preferably, the signal processing module further includes a band-pass filtering module, and the band-pass filtering module is used to filter out high-frequency interference from the electrical signal amplified by the circuit amplification module and retain the voice signal of 20 Hz to 20 KHz.

[0017] Preferably, it further includes a display screen, and the display screen is arranged on the counting module and is electrically connected to the counting module and the microcontroller.

[0018] Preferably, the voiceprint acquisition module is a voiceprint sensor.

[0019] Preferably, the counting module is a counter.

[0020] Preferably, two installation parts are symmetrically arranged at the bottom of the casing.

[0021] Compared with the prior art, the beneficial effects of the present utility model are as follows: By collecting the voice signal during the operation of the lightning arrester through the voiceprint acquisition module, and through the analysis and processing of the signal processing module and the microcontroller, the operation situation of the lightning arrester can be monitored in real time, and it is displayed through the counter and the display module, which is convenient for the staff to timely understand the working state of the lightning arrester and improves the safety and reliability of the power system.

[0022] Other features and advantages of the present utility model will be described in detail in the subsequent specific implementation part. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings are used to provide a further understanding of the present utility model and constitute a part of the specification. Together with the following specific implementation, they are used to explain the present utility model, but do not constitute a limitation to the present utility model. In the drawings:

[0024] Figure 1 Shows a schematic structural diagram of a lightning arrester counter monitoring device according to an embodiment of the present utility model;

[0025] Figure 2 Shows a schematic structural diagram of a lightning arrester counter monitoring device according to an embodiment of the present utility model (from another angle);

[0026] Figure 3 Shows a cross-sectional view of a lightning arrester counter monitoring device according to an embodiment of the present utility model;

[0027] Figure 4 Shows a cross-sectional view (from another angle) of the lightning arrester counter monitoring device according to an embodiment of the present invention;

[0028] Figure 5 Shows a schematic diagram of the internal structure of the lightning arrester counter monitoring device according to an embodiment of the present invention.

[0029] Description of reference numerals:

[0030] 1. Housing, 11. Grounding bolt, 12. Mounting part;

[0031] 2. Circuit board, 21. Signal processing module, 22. Counting module, 23. Microcontroller, 24. Display screen;

[0032] 3. Voiceprint acquisition module. Specific embodiments

[0033] The following will describe the specific embodiments of the present invention in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only for the purpose of illustrating and explaining the present invention, and are not used to limit the present invention.

[0034] Please refer to Figures 1 - 5 , this embodiment provides a lightning arrester counter monitoring device, including a housing 1, a circuit board 2, and a voiceprint acquisition module 3. Wherein, a grounding bolt 11 is provided at the top of the housing 1, the circuit board 2 is disposed inside the housing 1, the circuit board 2 is integrated with a signal processing module 21, a counting module 22, a microcontroller 23, and a display screen 24, the voiceprint acquisition module 3 is disposed outside the housing 1 and is electrically connected to the signal processing module 21. The display screen 24 is disposed on the counting module 22 and is electrically connected to the counting module 22 and the microcontroller 23.

[0035] Specifically, in this embodiment, the voiceprint acquisition module 3, the counting module 22, and the microcontroller 23 are common voiceprint collectors, counters, and controllers on the market, and the innovation point of this embodiment does not lie in this, so no further description will be given here.

[0036] The voiceprint acquisition module 3 is used to collect the sound signal generated when the lightning arrester operates and convert it into an electrical signal and transmit it to the signal processing module 21.

[0037] The signal processing module 21 is used to process the electrical signal collected by the voiceprint acquisition module 3 and transmit the processed electrical signal to the microcontroller 23. Specifically, the signal processing module 21 performs filtering, amplification, and analog-to-digital conversion processing on the electrical signal collected by the voiceprint acquisition module 3, extracts the characteristic parameters of the sound, and finally transmits the processed signal to the microcontroller 23.

[0038] In this embodiment, the signal processing module 21 further includes a circuit amplification module, a band-pass filtering module, and an AD conversion module. The circuit amplification module is used to amplify the weak mV signal collected by the voiceprint acquisition module into a V-level signal; the AD conversion module is used to perform AD conversion on the amplified signal, and the band-pass filtering module is used to filter out high-frequency interference from the electrical signal amplified by the circuit amplification module and retain the 20 Hz - 20 KHz voice signal. Specifically, the voice signal collected by the voiceprint acquisition module 3 passes through the circuit amplification module of the signal processing module 21, converts the weak mV signal of the voiceprint sensor into a V-level signal, then enters the band-pass filtering module to filter out high-frequency interference and retain the 20 Hz - 20 KHz voice signal. Then, the 20 Hz - 20 KHz voice signal enters the AD conversion module. The AD conversion module is a 16-bit AD converter, which converts it into 65,536 quantization levels, and each quantization level corresponds to a specific digital code. Then, the signal after AD conversion is connected to the microcontroller 23 through parallel data.

[0039] The microcontroller 23 is used to analyze and process the electrical signal transmitted by the signal processing module 21, judge the action condition of the lightning arrester, and transmit the processing result to the counting module 22. The counting module 22 is used to record the action times of the lightning arrester, and the display screen 24 is used to display the action times information of the lightning arrester.

[0040] Specifically, the microcontroller 23 first collects and stores the voiceprint features of the ambient noise, and enters the typical discharge signal and lightning voiceprint information. When the lightning arrester counter generates a lightning strike action, it starts the voiceprint monitoring and performs 1-minute wave recording. Then, the microcontroller 23 uses the adaptive filtering algorithm to analyze the lightning sound or electrical discharge sound from the voiceprint information, and compares it with the stored lightning strike voiceprint and discharge voiceprint (the electrical signal transmitted through the signal processing module 21), so as to determine whether the current action of the lightning arrester counter is caused by a lightning strike or an electrical discharge. Combining with the lightning arrester current monitoring, it improves the judgment accuracy of the lightning arrester counter for faults. During a lightning strike, the counter only performs the counting action and is displayed through the counter and the display screen 24, which is convenient for the staff to timely understand the working state of the lightning arrester and improves the safety and reliability of the power system.

[0041] Two installation parts 12 are symmetrically arranged at the bottom of the machine shell 1. The installation parts 12 are ear plates, and threaded holes are provided thereon. The specific installation can be carried out by screwing through the threaded holes.

[0042] Optionally, this application further includes a communication module. The communication module adopts the LoRa wireless communication method and communicates with the external aggregation node regularly, transmitting information such as the leakage current, resistive current, third harmonic, action times, and time in the lightning arrester counter to the centralized control system.

[0043] In summary, in this embodiment, the sound acquisition module 3 acquires the sound signal when the lightning arrester operates. Through the analysis and processing of the signal processing module 21 and the microcontroller 23, the operation of the lightning arrester can be monitored in real time, and the counter 22 and the display module 24 are used for display, which is convenient for the staff to timely understand the working state of the lightning arrester and improves the safety and reliability of the power system.

[0044] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention. In addition, it should be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, the present invention will not separately describe various possible combination methods.

[0045] In addition, any combination can be made between different embodiments of the present invention as long as it does not violate the idea of the present invention, and it should also be regarded as the content disclosed by the present invention.

Claims

1. A lightning protection counter monitoring device, characterized in that: include: A casing, wherein a grounding bolt is disposed on the top of the casing; A circuit board, which is arranged inside the housing and has a signal processing module, a counting module and a microcontroller integrated thereon; A voiceprint collection module, which is disposed outside the housing and is electrically connected to the signal processing module; The voiceprint collection module is used to collect the sound signal generated when the arrester is in action, and convert it into an electrical signal and transmit it to the signal processing module; The signal processing module is used to process the electrical signal collected by the voiceprint collection module and transmit the processed electrical signal to the microcontroller; The microcontroller is used to analyze and process the electrical signal transmitted by the signal processing module, determine the action of the lightning arrester, and transmit the processing result to the counting module; The counting module is used to record the number of times the lightning arrester operates.

2. The lightning protection counter monitoring device according to claim 1, characterized in that: The signal processing module includes a circuit amplification module and an AD conversion module; The circuit amplification module is used to amplify the weak mV signal collected by the voiceprint collection module into a V-level signal; The AD conversion module is used to perform AD conversion on the amplified signal.

3. The lightning protection counter monitoring device according to claim 2, characterized in that: The AD conversion module is a 16-bit AD converter.

4. The lightning protection counter monitoring device according to claim 2, characterized in that: The signal processing module also includes a bandpass filtering module, which is used to filter out high-frequency interference from the electrical signal amplified by the circuit amplification module and retain 20Hz-20KHz sound signals.

5. The lightning protection counter monitoring device according to any one of claims 1 to 4, characterized in that: It also includes a display screen, which is arranged on the counting module and is electrically connected to the counting module and the microcontroller.

6. The lightning protection counter monitoring device according to any one of claims 1 to 4, characterized in that: The voiceprint collection module is a voiceprint sensor.

7. The lightning protection counter monitoring device according to any one of claims 1 to 4, characterized in that: The counting module is a counter.

8. The lightning protection counter monitoring device according to any one of claims 1 to 4, characterized in that: Two mounting parts are symmetrically arranged on the bottom of the housing.

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