An online monitoring system for contact line lightning arresters based on the Internet of Things

Abstract

The invention discloses an online monitoring system for a catenary arrester based on the Internet of Things, comprising a central processing unit and a current wave detection unit, wherein the input end of the current wave detection unit is connected to the output end of a current acquisition unit of the arrester, the input end of the current acquisition unit of the arrester is connected to the output end of a power management unit, the output end of the central processing unit is connected to the input end of a data processing and analysis unit, and the output end of the data processing and analysis unit is connected to the input end of a wireless transmission unit. The online monitoring system for a catenary arrester based on the Internet of Things can comprehensively monitor the state of the arrester and timely update its data through the coordinated setting of the current wave detection unit, the arrester current acquisition unit and the data processing and analysis unit, and can timely alarm and prompt monitoring personnel after a problem occurs, so that the monitoring personnel can find the abnormality of the arrester in time and perform maintenance on it.

Description

Technical Field

[0001] The invention relates to the technical field of online monitoring of a catenary arrester, and in particular to an online monitoring system for a catenary arrester based on the Internet of Things. Background Art

[0002] The overhead contact network is a high-voltage transmission line that is zigzag-shapedly erected above the rails in electrified railways and is used to draw current from pantographs. The overhead contact network is the main structure of railway electrification projects and is a special form of transmission line erected above the railway line to supply power to electric locomotives. It consists of contact suspension, supporting devices, positioning devices, pillars and foundations. The contact suspension includes contact wires, droppers, load-bearing cables, connecting parts and insulators. The contact suspension is erected on the pillars through supporting devices. Its function is to transmit the electric energy obtained from the traction substation to the electric locomotive.

[0003] The catenary arrester is an important safety facility in the catenary system. It is mainly used to protect the catenary pillars, cable trays and other metal components from damage caused by natural and induced lightning strikes. Its working principle mainly includes the formation of arcs through air gap discharge to disperse electromagnetic energy, or the transfer and dispersion of electromagnetic energy through rapid grounding discharge. The arrester is usually composed of metal oxide MO elements and ceramic insulators. The MO elements will form ionization channels under specific voltage conditions, so that the electromagnetic energy can be discharged and dispersed quickly. At the same time, the metal oxide elements have self-healing properties and can automatically repair damaged electrical properties. The arresters in traction substations are all gapless products. They are mainly monitored by close observation of the action count and current conditions indicated by the monitor, and regular observation and recording.

[0004] However, the existing devices have the following problems:

[0005] The existing equipment mainly relies on close manual observation to monitor the action count and current conditions, and can only monitor and record them regularly. The data update is slow. Once the electrical parameters of the lightning arrester are abnormal, it cannot be discovered in time. At the same time, only fixed parameters can be recorded through close manual observation. The recorded data is limited, and the operation and maintenance personnel cannot understand and evaluate the operating status of the lightning arrester in time. Summary of the invention

[0006] 1. Technical issues to be resolved

[0007] In view of the shortcomings of the prior art, the present invention provides an online monitoring system for contact network lightning arresters based on the Internet of Things, which has the advantages of comprehensive monitoring data and timely data update, and solves the problems of slow data update and incomplete monitoring.

[0008] (II) Technical solution

[0009] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an online monitoring system for contact network lightning arresters based on the Internet of Things, comprising a central processing unit and a current wave detection unit, the input end of the current wave detection unit is connected to the output end of the lightning arrester current acquisition unit, the input end of the lightning arrester current acquisition unit is connected to the output end of the power management unit, the output end of the central processing unit is connected to the input end of the data processing and analysis unit, the output end of the data processing and analysis unit is connected to the input end of the wireless transmission unit, the output end of the wireless transmission unit is connected to the input end of the parameter imaging unit, the output end of the parameter imaging unit is connected to the input end of the alarm unit, the output end of the wireless transmission unit is connected to the input end of the cloud platform, the output end of the cloud platform is connected to the input end of the data extraction unit, and the output end of the data extraction unit is connected to the input end of the mobile data terminal.

[0010] Preferably, the arrester current collection unit includes an impulse current receiving module, a current signal collection module, a transformer and a voltage comparison circuit module, the output end of the impulse current receiving module is connected to the input end of the current signal collection module, the output end of the current signal collection module is connected to the input end of the transformer, and the output end of the transformer is connected to the input end of the voltage comparison circuit module.

[0011] Preferably, the power management unit includes a current access module, an electric energy conversion module, an electric energy storage module and a power supply module, the output end of the current access module is connected to the input end of the electric energy conversion module, the output end of the electric energy conversion module is connected to the input end of the electric energy storage module, and the output end of the electric energy storage module is connected to the input end of the power supply module.

[0012] Preferably, the current wave detection unit includes a current intensity detection module, a voltage intensity detection module, a voltage and current analysis module and a parameter transmission module, the output end of the current intensity detection module is connected to the input end of the voltage intensity detection module, the output end of the voltage intensity detection module is connected to the input end of the voltage and current analysis module, and the output end of the voltage and current analysis module is connected to the input end of the parameter transmission module.

[0013] Preferably, the data processing and analysis unit includes a data cleaning module, a data integration module, an analog-to-digital conversion module, a data analysis module and an intelligent judgment module, the output end of the data cleaning module is connected to the input end of the data integration module, the output end of the data integration module is connected to the input end of the analog-to-digital conversion module, the output end of the analog-to-digital conversion module is connected to the input end of the data analysis module, and the output end of the data analysis module is connected to the input end of the intelligent judgment module.

[0014] Preferably, the wireless transmission unit includes a signal receiving module, a signal enhancing module, a signal amplifying module and a signal transmission module, the output end of the signal receiving module is connected to the input end of the signal enhancing module, the output end of the signal enhancing module is connected to the input end of the signal amplifying module, and the output end of the signal amplifying module is connected to the input end of the signal transmission module.

[0015] Preferably, the cloud platform includes an information receiving module, an information storage module and an information extraction module, the output end of the information receiving module is connected to the input end of the information storage module, the output end of the information storage module is connected to the input end of the information extraction module, the data extraction unit includes a data extraction module, a data comparison module and a comparison graphic generation module, the output end of the data extraction module is connected to the input end of the data comparison module, and the output end of the data comparison module is connected to the input end of the comparison graphic generation module.

[0016] Preferably, the mobile data terminal comprises an online login module, a data viewing module and a data storage module, the output end of the online login module is connected to the input end of the data viewing module, and the output end of the data viewing module is connected to the input end of the data storage module.

[0017] Preferably, the parameter imaging unit includes a voltage waveform display module, a current waveform display module, a data control module and a data storage module, the output end of the voltage waveform display module is connected to the input end of the current waveform display module, the output end of the current waveform display module is connected to the input end of the data control module, and the output end of the data control module is connected to the input end of the data storage module.

[0018] Preferably, the alarm unit includes a warning light on module, a buzzer, a warning light off module and a manual off module, the output end of the warning light on module is connected to the input end of the buzzer, the output end of the buzzer is connected to the input end of the warning light off module, and the output end of the warning light off module is connected to the input end of the manual off module.

[0019] (III) Beneficial effects

[0020] Compared with the prior art, the present invention provides an online monitoring system for overhead line arresters based on the Internet of Things, which has the following beneficial effects:

[0021] The online monitoring system for the catenary arrester based on the Internet of Things can comprehensively monitor the state of the arrester and timely update its data through the coordinated setting of the current wave detection unit, the arrester current acquisition unit and the data processing and analysis unit. With the help of the setting of the alarm unit, it can timely alarm and remind the monitoring personnel after a problem occurs, so that the monitoring personnel can find the abnormality of the arrester in time and maintain it. At the same time, with the help of the setting of the mobile data terminal, it is convenient for the staff to view the monitored data at any time, which increases the convenience of the device and avoids the problem that the staff can only observe and record it regularly and cannot find the problem in time after the problem occurs. At the same time, it also further reduces the labor intensity of the staff. With the help of the setting of the data extraction unit, the data recorded in the past can be compared, which is convenient for the staff to find the change of data in time, understand and evaluate the running state of the arrester in the past in time, find and record the problems that often occur, and adjust the existing arrester according to the shortcomings of the running state of the arrester in the past to reduce the frequency of abnormality of the arrester. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The present invention proposes a structural schematic diagram of an online monitoring system for overhead line lightning arresters based on the Internet of Things;

[0023] Figure 2 The present invention proposes a schematic structural diagram of a lightning arrester current acquisition unit of an online monitoring system for a catenary lightning arrester based on the Internet of Things;

[0024] Figure 3 The present invention proposes a structural schematic diagram of a wireless transmission unit of an online monitoring system for a contact line lightning arrester based on the Internet of Things. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] See also Figure 1-3, including a central processing unit and a current wave detection unit. The current wave detection unit includes a current intensity detection module, a voltage intensity detection module, a voltage and current analysis module and a parameter transmission module. The parameters obtained by analysis are transmitted to the central processing unit for further processing. The output end of the current intensity detection module is connected to the input end of the voltage intensity detection module. The voltage intensity at both ends of the lightning arrester is detected at the same time to fully reflect the working state of the lightning arrester. The output end of the voltage intensity detection module is connected to the input end of the voltage and current analysis module. The detected voltage and current signals are analyzed to extract characteristic parameters such as waveform and peak value. The output end of the voltage and current analysis module is connected to the input end of the parameter transmission module to detect the current intensity and voltage intensity on the lightning arrester, and perform preliminary analysis. Then the analysis results are transmitted to the central processing unit. Output to the subsequent processing unit, the input end of the current wave detection unit is connected to the output end of the arrester current collection unit, the arrester current collection unit includes an impact current receiving module, a current signal collection module, a mutual inductor and a voltage comparison circuit module, the output end of the impact current receiving module is connected to the input end of the current signal collection module, the impact current receiving module is responsible for receiving the transient large current generated by the arrester under the lightning impact, and at the same time, the current signal collection module performs preliminary processing on the received impact current signal, such as filtering, amplification, etc., so that the subsequent modules can read it accurately, the output end of the current signal collection module is connected to the input end of the mutual inductor, and the high voltage and large current signal is converted into a low voltage and small current signal to ensure the safety of the subsequent circuit, and the output end of the mutual inductor is connected to the input end of the voltage comparison circuit module;

[0027] The input end of the arrester current acquisition unit is connected to the output end of the power management unit. The power management unit includes a current access module, an electric energy conversion module, an electric energy storage module and a power supply module. The output end of the current access module is connected to the input end of the electric energy conversion module to convert the accessed electric energy into the voltage and current levels required by each module inside the system. The output end of the electric energy conversion module is connected to the input end of the electric energy storage module to provide backup power when the system is powered off or the voltage fluctuates to ensure continuous operation of the system. The output end of the electric energy storage module is connected to the input end of the power supply module to stably supply the converted and stored electric energy to each power-consuming module in the system to provide a stable power supply for the system, including functions such as current access, electric energy conversion, storage and power supply.

[0028] The output end of the central processing unit is connected to the input end of the data processing and analysis unit. The data processing and analysis unit includes a data cleaning module, a data integration module, an analog-to-digital conversion module, a data analysis module and an intelligent judgment module. The output end of the data cleaning module is connected to the input end of the data integration module, the output end of the data integration module is connected to the input end of the analog-to-digital conversion module, the output end of the analog-to-digital conversion module is connected to the input end of the data analysis module, and the output end of the data analysis module is connected to the input end of the intelligent judgment module. The received data is cleaned, integrated, analog-to-digital converted, deeply analyzed and intelligently judged to identify possible anomalies or faults. The output end of the analysis unit is connected to the input end of the wireless transmission unit. The wireless transmission unit includes a signal receiving module, a signal enhancement module, a signal amplification module and a signal transmission module. The output end of the signal receiving module is connected to the input end of the signal enhancement module to enhance the signal strength and ensure the stability of long-distance transmission. The output end of the signal enhancement module is connected to the input end of the signal amplification module to further amplify the signal to overcome the attenuation during the transmission process. The output end of the signal amplification module is connected to the input end of the signal transmission module to send the processed data to the remote cloud platform safely and reliably through the signal receiving, enhancement, amplification and transmission modules.

[0029] The output end of the wireless transmission unit is connected to the input end of the parameter imaging unit. The parameter imaging unit includes a voltage waveform display module, a current waveform display module, a data control module and a data storage module. The output end of the voltage waveform display module is connected to the input end of the current waveform display module to display the voltage signal in the form of a waveform to reflect the voltage change trend and also display the waveform of the current signal. The output end of the current waveform display module is connected to the input end of the data control module to control the display parameters of the waveform, such as the time axis, zoom ratio, etc. The output end of the data control module is connected to the input end of the data storage module to generate voltage and current waveforms to provide an intuitive monitoring interface for the staff. The output end of the parameter imaging unit is connected to the input end of the alarm unit. The alarm unit includes a warning light on module, a buzzer, a warning light off module and a manual off module. The output end of the warning light on module is connected to the input end of the buzzer, the output end of the buzzer is connected to the input end of the warning light off module, and the output end of the warning light off module is connected to the input end of the manual off module. When an abnormality or fault is detected, the warning light and the buzzer are used to promptly alarm and notify the staff to handle it.

[0030] The output end of the wireless transmission unit is connected to the input end of the cloud platform. The cloud platform includes an information receiving module, an information storage module and an information extraction module. The output end of the information receiving module is connected to the input end of the information storage module to store the received data in the cloud database to achieve long-term storage and backup of the data. The output end of the information storage module is connected to the input end of the information extraction module to extract data of a specific time period or a specific type from the database according to user needs or preset conditions. The data extraction unit includes a data extraction module, a data comparison module and a comparison graph generation module. The output end of the data extraction module is connected to the input end of the data comparison module. The output end of the data comparison module is connected to the input end of the comparison graph generation module. As a center for data storage and management, it receives and saves the transmitted data and supports data extraction and remote access. The output end of the cloud platform is connected to the input end of the data extraction unit to extract data from the cloud platform for data comparison and graphical display to help staff members intuitively understand the changes in the operating status of the lightning arrester. The output end of the data extraction unit is connected to the input end of the mobile data terminal to allow staff members to obtain and monitor the real-time data of the lightning arrester anytime and anywhere through online login, data viewing and data storage functions.

[0031] The mobile data terminal includes an online login module, a data viewing module and a data storage module. The output end of the online login module is connected to the input end of the data viewing module to display the data transmitted from the cloud platform or the data extraction unit, including real-time data and historical data. The output end of the data viewing module is connected to the input end of the data storage module to allow the user to save the viewed data to a local device for offline viewing or further analysis.

[0032] To sum up, when in use, the online monitoring system for contact network lightning arresters based on the Internet of Things can monitor the status of the lightning arrester in all aspects and update its data in time through the coordinated setting of the current wave detection unit, the lightning arrester current acquisition unit and the data processing and analysis unit. With the help of the setting of the alarm unit, it can promptly alarm and remind the monitoring personnel after a problem occurs, which is convenient for the monitoring personnel to promptly discover the abnormality of the lightning arrester and maintain it, avoiding the situation where the staff can only observe and record it regularly and cannot discover the problem in time after it occurs, and also further reduces the labor intensity of the staff.

[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise one" do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An online monitoring system for overhead line lightning arresters based on the Internet of Things, comprising a central processing unit and a current wave detection unit, characterized in that: The input end of the current wave detection unit is connected to the output end of the lightning arrester current collection unit, the input end of the lightning arrester current collection unit is connected to the output end of the power management unit, the output end of the central processing unit is connected to the input end of the data processing and analysis unit, the output end of the data processing and analysis unit is connected to the input end of the wireless transmission unit, the output end of the wireless transmission unit is connected to the input end of the parameter imaging unit, the output end of the parameter imaging unit is connected to the input end of the alarm unit, the output end of the wireless transmission unit is connected to the input end of the cloud platform, the output end of the cloud platform is connected to the input end of the data extraction unit, and the output end of the data extraction unit is connected to the input end of the mobile data terminal.

2. According to the Internet of Things-based online monitoring system for overhead line lightning arresters according to claim 1, it is characterized in that: The arrester current collection unit includes an impulse current receiving module, a current signal collection module, a transformer and a voltage comparison circuit module, the output end of the impulse current receiving module is connected to the input end of the current signal collection module, the output end of the current signal collection module is connected to the input end of the transformer, and the output end of the transformer is connected to the input end of the voltage comparison circuit module.

3. According to the Internet of Things-based contact line arrester online monitoring system of claim 1, it is characterized by: The power management unit includes a current access module, an electric energy conversion module, an electric energy storage module and a power supply module. The output end of the current access module is connected to the input end of the electric energy conversion module, the output end of the electric energy conversion module is connected to the input end of the electric energy storage module, and the output end of the electric energy storage module is connected to the input end of the power supply module.

4. The online monitoring system for overhead line lightning arrester based on the Internet of Things according to claim 1 is characterized in that: The current wave detection unit includes a current intensity detection module, a voltage intensity detection module, a voltage and current analysis module and a parameter transmission module. The output end of the current intensity detection module is connected to the input end of the voltage intensity detection module, the output end of the voltage intensity detection module is connected to the input end of the voltage and current analysis module, and the output end of the voltage and current analysis module is connected to the input end of the parameter transmission module.

5. The online monitoring system for overhead line lightning arrester based on the Internet of Things according to claim 1 is characterized in that: The data processing and analysis unit includes a data cleaning module, a data integration module, an analog-to-digital conversion module, a data analysis module and an intelligent judgment module. The output end of the data cleaning module is connected to the input end of the data integration module, the output end of the data integration module is connected to the input end of the analog-to-digital conversion module, the output end of the analog-to-digital conversion module is connected to the input end of the data analysis module, and the output end of the data analysis module is connected to the input end of the intelligent judgment module.

6. The online monitoring system for overhead line lightning arrester based on the Internet of Things according to claim 1 is characterized in that: The wireless transmission unit includes a signal receiving module, a signal enhancing module, a signal amplifying module and a signal transmission module. The output end of the signal receiving module is connected to the input end of the signal enhancing module, the output end of the signal enhancing module is connected to the input end of the signal amplifying module, and the output end of the signal amplifying module is connected to the input end of the signal transmission module.

7. The online monitoring system for overhead line arresters based on the Internet of Things according to claim 1 is characterized in that: The cloud platform includes an information receiving module, an information storage module and an information extraction module. The output end of the information receiving module is connected to the input end of the information storage module, and the output end of the information storage module is connected to the input end of the information extraction module. The data extraction unit includes a data extraction module, a data comparison module and a comparison graphic generation module. The output end of the data extraction module is connected to the input end of the data comparison module, and the output end of the data comparison module is connected to the input end of the comparison graphic generation module.

8. The online monitoring system for overhead line lightning arrester based on Internet of Things according to claim 1 is characterized by: The mobile data terminal comprises an online login module, a data viewing module and a data storage module. The output end of the online login module is connected to the input end of the data viewing module, and the output end of the data viewing module is connected to the input end of the data storage module.

9. The online monitoring system for overhead line lightning arrester based on Internet of Things according to claim 1 is characterized in that: The parameter imaging unit includes a voltage waveform display module, a current waveform display module, a data control module and a data storage module. The output end of the voltage waveform display module is connected to the input end of the current waveform display module, the output end of the current waveform display module is connected to the input end of the data control module, and the output end of the data control module is connected to the input end of the data storage module.

10. The online monitoring system for overhead line lightning arrester based on Internet of Things according to claim 1 is characterized in that: The alarm unit includes a warning light on module, a buzzer, a warning light off module and a manual off module, the output end of the warning light on module is connected to the input end of the buzzer, the output end of the buzzer is connected to the input end of the warning light off module, and the output end of the warning light off module is connected to the input end of the manual off module.

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