State monitoring method and system based on power distribution network cable well lid

Abstract

The invention discloses a state monitoring method and system based on a power distribution network cable well lid, and the method comprises the steps: obtaining in-well environment data collected by all environment sensors disposed in a cable well and cable operation data collected by all current sensors, and carrying out the analysis of the environment state based on a pre-constructed environment state analysis model, analyzing the in-well environment data to obtain state analysis data of the cable well, performing comparative analysis on the cable operation data and a pre-acquired power distribution network operation instruction to generate abnormal analysis data reflecting a cable operation state result, and controlling the power distribution network terminal to perform power distribution network operation according to the state analysis data and the abnormal analysis data. And generating associated monitoring log information. The state information in the target cable well is monitored in real time, and the safety performance and the power supply reliability of a power distribution network are improved; information such as the inclination state of the well lid is monitored in real time, potential safety hazards can be found and processed in time when the state of the well lid is abnormal, and threats to vehicles and personnel are avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of cable monitoring, and in particular to a device for detecting the status of a cable well cover in a distribution network. Background Art

[0002] As the pace of urbanization and modernization continues to accelerate, urban infrastructure construction continues to develop at a high speed, and various livelihood projects such as water, electricity, and gas in cities and municipal public underground pipeline facilities are increasing. With the continuous development of the power industry, the distribution network has also shifted from traditional ground poles to underground cable power supply.

[0003] In the underground cable power supply mode, various types of cable inspection wells on the road are increasing accordingly. The cable well provides a closed space for cable equipment to store power, communication and other types of cables to prevent them from physical damage or environmental factors. As a road equipment that can be opened and moved, the manhole cover plays an important role. If the distribution network cable manhole cover and the well environment monitoring and management are not properly managed, it will cause damage to the cable equipment, as well as serious consequences such as injury and damage to vehicles.

[0004] It can be seen that how to intelligently monitor the status of cable wells in distribution networks has become a technical problem that technical personnel in this field need to solve urgently. Summary of the invention

[0005] The present invention provides a method and system for monitoring the status of a cable well cover in a distribution network, so as to achieve a monitoring effect of the status of a cable well.

[0006] In order to solve the above technical problems, an embodiment of the present invention provides a state monitoring method based on a distribution network cable manhole cover, comprising:

[0007] Respectively acquiring well environment data collected by various environmental sensors installed in the cable well, wherein the well environment data at least includes temperature data, humidity data and water immersion data; and,

[0008] The cable operation data collected by each current sensor is obtained respectively.

[0009] Based on a pre-constructed environmental status analysis model, the environmental data in the well is analyzed to obtain the status analysis data of the cable well, wherein the environmental status analysis model is constructed by an improved multivariate statistical analysis algorithm, and the multivariate statistical analysis algorithm analyzes the changing trend of the data in combination with the time series during use.

[0010] The cable operation data is compared and analyzed with the distribution network operation instructions acquired in advance to generate abnormal analysis data reflecting the cable operation status results.

[0011] The distribution network terminal is controlled to generate associated monitoring log information according to the status analysis data and the abnormality analysis data respectively.

[0012] Furthermore, the method further comprises:

[0013] The placement status of the target cable well cover collected by the horizontal placement sensor is obtained, and the placement status is sent to the main processor.

[0014] The main processor determines whether the target cable well cover is abnormal according to the placement state, and if so, sends an abnormal signal to control the alarm component to issue an alarm message.

[0015] Furthermore, the alarm component includes a buzzer speaker and an LED warning light;

[0016] After receiving the abnormal signal sent by the main processor, the alarm component controls the buzzer speaker and the LED warning light to emit sound and light alarm information.

[0017] Furthermore, the well environment data is analyzed based on the pre-built environment state analysis model to obtain the state analysis data of the cable well, including:

[0018] The dynamic statistics of the environmental data in each well are calculated based on the affine relationship theory.

[0019] The current state and change trend of the environment in the well are analyzed according to each of the dynamic statistics to obtain state analysis data in the cable well.

[0020] Another embodiment of the present invention provides a status monitoring system based on a cable manhole cover of a distribution network, including a main processor and a cable manhole cover, a sensor component, an alarm component and a communication component respectively controlled by the main processor.

[0021] The main processor is arranged on the cable well cover, and the cable well cover is configured to implement a state monitoring method based on the distribution network cable well cover.

[0022] The signal output end of the sensor assembly is communicatively connected with the cable well cover; the sensor assembly includes a horizontally placed sensor, a plurality of environmental sensors and a plurality of current sensors.

[0023] The alarm component is arranged on the cable well cover, and the alarm component is communicatively connected with the main processor.

[0024] The communication component is arranged on the cable well cover, the input end of the communication component is connected to the output end of the main processor, and the output end of the communication component is connected to the cloud communication.

[0025] Furthermore, the system also includes a battery assembly, and the battery assembly is used to provide power for the devices in the system.

[0026] Furthermore, the battery assembly includes a lithium battery pack and a solar charger, and the input end of the lithium battery pack is connected to the output end of the solar charger.

[0027] Furthermore, the system also includes a positioning device and a timing chip, and the timing chip synchronizes time with the satellite.

[0028] Furthermore, the current sensor is arranged in a shielding layer of the cable in the target cable well, and each current sensor corresponds to one cable.

[0029] Furthermore, the communication connection between the main processor and each sensor is achieved through a ZigBee network.

[0030] Compared with the prior art, the embodiments of the present invention have the following advantages:

[0031] (1) The manhole cover monitoring device monitors the status information of the target cable well in real time and reports any abnormalities in a timely manner. This can detect abnormalities in cable equipment and handle them in a timely manner to avoid further damage. This improves the safety performance and operation and maintenance efficiency of the distribution network and improves power supply reliability.

[0032] (2) By real-time monitoring of the position, tilt status and other information of the manhole cover, an alarm signal is issued when the target cable manhole cover is illegally moved or opened, which helps to promptly discover and deal with potential safety hazards, avoid threats to vehicles and personnel, and ensure the safe operation of the distribution network. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 A flow chart of the steps of a method for monitoring the status of a cable manhole cover in a distribution network provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0034] 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. The purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive. 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.

[0035] In the description of this application, the terms "first", "second", "third", etc. are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first", "second", "third", etc. may explicitly or implicitly include one or more of the feature. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0036] In the description of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be a connection between the two elements. The terms "vertical", "horizontal", "left", "right", "upper", "lower" and similar expressions used herein are only for illustrative purposes, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0037] In the description of this application, it should be noted that, unless otherwise defined, all technical and scientific terms used in the present invention have the same meaning as those commonly understood by those skilled in the art. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood by specific circumstances.

[0038] An embodiment of the present invention provides a method for monitoring the status of a cable manhole cover in a distribution network. For details, see Figure 1 , Figure 1 The flowchart of the method for monitoring the state of a cable manhole cover in a power distribution network according to one embodiment of the present invention includes steps S11 to S15:

[0039] Step S11, respectively acquiring the well environment data collected by each environmental sensor installed in the cable well, wherein the well environment data at least includes temperature data, humidity data and water immersion data.

[0040] Cable wells are an important part of power and communication systems, and their safe operation is crucial to the power supply and communication in buildings. Obtaining well environment data helps to timely discover and deal with safety hazards and ensure the safe operation of cable wells and the cables inside them.

[0041] In order to obtain the well environment data collected by various environmental sensors in the cable well, this embodiment uses a water immersion sensor, a temperature sensor and a humidity sensor to measure the well environment data of the cable well.

[0042] By acquiring real-time environmental data in the cable well, abnormal conditions such as excessive temperature, excessive humidity or water immersion can be discovered in a timely manner, thereby triggering an early warning mechanism and notifying relevant personnel in a timely manner to handle the situation and prevent potential safety hazards.

[0043] Step S12, respectively acquiring the cable operation data collected by each current sensor.

[0044] In addition to obtaining well environment data, obtaining leakage current data is also crucial. Leakage current data can reflect the insulation performance of electrical equipment. When the insulation performance of the equipment decreases, the leakage current will increase. By monitoring the leakage current data, insulation failures of the equipment can be discovered in time to avoid equipment damage or greater safety accidents.

[0045] This embodiment uses a current sensor to monitor leakage current to obtain cable operation data reflecting whether the cable is leaking. Specifically, the current sensor is set in the shielding layer of the cable in the target cable well. The insulation state of the cable can be effectively grasped through the leakage current of the shielding layer. When there is an abnormality in the distribution network cable, the relationship between the leakage current of the cable and the temperature and humidity environment can be timely understood. The insulation dynamics of the distribution network cable can also be compared through the leakage current at a certain time of the day, and can also be compared under the temperature and humidity environment to achieve the monitoring of the underground cables of the distribution network. Different leakage current sensors can be installed according to the actual number of cables in a cable well, and each sensor corresponds to one cable.

[0046] Step S13, based on a pre-constructed environmental status analysis model, the environmental data in the well is analyzed to obtain the status analysis data of the cable well, wherein the environmental status analysis model is constructed by an improved multivariate statistical analysis algorithm, and the multivariate statistical analysis algorithm analyzes the changing trend of the data in combination with the time series during use.

[0047] Due to the complex environment of the cable well, the interference to the data collected by the sensor is relatively large. Therefore, the data collected by the sensor is cleaned and de-redundanted.

[0048] In addition, because the well environmental data consists of multiple types of environmental data, the multivariate statistical analysis method is used to analyze the well environmental data to obtain the environmental status analysis data in the cable well. The data in the well is dynamically changing, and the change in a period of time can reflect important status information. Therefore, the changing trend of multivariate environmental data is dynamically analyzed by combining time series to obtain status analysis data.

[0049] The specific process is: based on the affine relationship theory, the dynamic statistics of the environmental data in each well based on the time series are calculated, and the current state and change trend of the environment in the well are analyzed according to the dynamic statistics to obtain the state analysis data in the cable well.

[0050] Step S14, comparing and analyzing the cable operation data with the distribution network operation instructions acquired in advance, and generating abnormal analysis data reflecting the cable operation status results.

[0051] The leakage current value of the cable operation data obtained in step S12 is compared with the normalized current value specified in the distribution network operation instruction. When a current value greater than the normalized current value is monitored, it is determined that a leakage abnormality has occurred in the cable.

[0052] Preferably, the cable operation data in this embodiment can also be combined with the well environment data to further improve the accuracy of the judgment. Specifically: when the leakage current value of the cable operation data is monitored to be greater than the normalized current value, the next step is to confirm the temperature and humidity conditions and water immersion in the cable well. If there is no obvious abnormality in temperature and humidity, and no water immersion occurs in the cable well, it can be judged that the cable has a leakage current abnormality.

[0053] Preferably, when it is determined that there is leakage current, the system reads the position, location and coordinates of the cable well according to the Beidou navigation and positioning system, and confirms the time of occurrence and other information through the Beidou timing chip to form a complete leakage current environment, time and space information. In the next step, the cable well monitoring device will alarm the time, environment, location and other information of the abnormal leakage current of the cable through the cable well monitoring device, and contact the 95598 platform, so that the background staff can timely understand the situation of the cable well and cable leakage current.

[0054] In addition, since the cable manhole cover is an important part of the urban infrastructure and is located on the road surface, when it is tilted or opened abnormally, it is easy to cause damage to the life and property safety of passing vehicles and pedestrians. Therefore, the method of this embodiment also includes obtaining the placement state of the target cable manhole cover collected by the horizontal placement sensor, and sending the placement state to the main processor in the cable manhole cover. The main processor determines whether the target cable manhole cover is abnormal according to the placement state. If so, it sends an abnormal signal to control the alarm component to issue an alarm message.

[0055] After receiving the abnormal signal sent by the main processor, the alarm component controls the buzzer horn and LED warning light to emit sound and light alarm information to remind passers-by and vehicles to pay attention. The main processor also uploads the abnormal information to the server to remind the staff to deal with it in time.

[0056] Step S15: The main processor generates associated monitoring log information according to the status analysis data and the abnormality analysis data respectively.

[0057] After completing a cable well abnormality monitoring, the main processor generates relevant monitoring log information based on the analysis data obtained in the previous steps. By analyzing these data, potential problems in the power grid can be discovered in time, providing guidance for subsequent maintenance and management.

[0058] The state monitoring method based on the cable manhole cover of the distribution network of the present invention monitors the state information in the target cable manhole in real time through the manhole cover monitoring device, and reports it in time when an abnormality is found, so that the abnormality of the cable equipment can be found and handled in time to avoid further damage. The safety performance and operation and maintenance efficiency of the distribution network are improved, and the power supply reliability is improved; by real-time monitoring of the position, tilt state and other information of the manhole cover, an alarm signal is issued when the target cable manhole cover is illegally moved or opened, which helps to timely discover and deal with potential safety hazards, avoid threats to vehicles and personnel, and also ensure the safe operation of the distribution network.

[0059] An embodiment of the present invention also provides a status monitoring system based on a distribution network cable manhole cover, comprising a main processor and a cable manhole cover, a sensor component, an alarm component, a communication component, a battery component, a positioning device and a timing chip, which are respectively controlled by the main processor, and the timing chip synchronizes time with a satellite.

[0060] The main processor is disposed on the cable manhole cover, and the cable manhole cover is configured to implement the state monitoring method based on the distribution network cable manhole cover as described above.

[0061] The signal output end of the sensor assembly is communicatively connected with the cable well cover; the sensor assembly includes a horizontally placed sensor, a plurality of environmental sensors and a plurality of current sensors.

[0062] The alarm component is arranged on the cable well cover, and the alarm component is communicatively connected with the main processor.

[0063] The communication component is arranged on the cable well cover, the input end of the communication component is connected to the output end of the main processor, and the output end of the communication component is connected to the cloud communication.

[0064] The battery assembly is used to provide power for devices in the system. The battery assembly includes a lithium battery pack and a solar charger. The input end of the lithium battery pack is connected to the output end of the solar charger.

[0065] The communication connection between the main processor and each sensor is achieved through a ZigBee network.

[0066] The technical features and technical effects of the system proposed in the embodiment of the present invention are the same as those of the method proposed in the embodiment of the present invention, and are not described in detail here. Each module in the above system can be implemented in whole or in part by software, hardware, and a combination thereof. Each of the above modules can be embedded in or independent of a processor in a computer device in the form of hardware, or can be stored in a memory in a computer device in the form of software, so that the processor can call and execute operations corresponding to each of the above modules.

[0067] In summary, the method and system for monitoring the state of a distribution network cable manhole cover provided by the embodiment of the present invention have the following beneficial effects compared with the prior art:

[0068] (1) The manhole cover monitoring device monitors the status information of the target cable well in real time and reports any abnormalities in a timely manner. This can detect abnormalities in cable equipment and handle them in a timely manner to avoid further damage. This improves the safety performance and operation and maintenance efficiency of the distribution network and improves power supply reliability.

[0069] (2) By real-time monitoring of the position, tilt status and other information of the manhole cover, an alarm signal is issued when the target cable manhole cover is illegally moved or opened, which helps to promptly discover and deal with potential safety hazards, avoid threats to vehicles and personnel, and ensure the safe operation of the distribution network.

[0070] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A method for monitoring the status of a cable manhole cover in a distribution network, characterized in that: Applied in cable wells consisting of intelligent manhole covers, including: Respectively acquiring well environment data collected by various environmental sensors installed in the cable well, wherein the well environment data at least includes temperature data, humidity data and water immersion data; and, respectively acquiring the cable operation data collected by each current sensor; Based on a pre-built environmental state analysis model, the well environment data is analyzed to obtain the state analysis data of the cable well, wherein the environmental state analysis model is constructed by an improved multivariate statistical analysis algorithm, and the multivariate statistical analysis algorithm analyzes the change trend of the data in combination with the time series during use; Compare and analyze the cable operation data with the distribution network operation instructions acquired in advance to generate abnormal analysis data reflecting the cable operation status results; The distribution network terminal is controlled to generate associated monitoring log information according to the status analysis data and the abnormality analysis data respectively.

2. The state monitoring method based on the distribution network cable manhole cover according to claim 1 is characterized in that: The method further comprises: Acquire the placement status of the target cable manhole cover collected by the horizontal placement sensor, and send the placement status to the main processor; The main processor determines whether the target cable well cover is abnormal according to the placement state, and if so, sends an abnormal signal to control the alarm component to issue an alarm message.

3. The method for monitoring the state of a distribution network cable manhole cover according to claim 2, characterized in that: The alarm component includes a buzzer speaker and an LED warning light; After receiving the abnormal signal sent by the main processor, the alarm component controls the buzzer speaker and the LED warning light to emit sound and light alarm information.

4. The method for monitoring the state of a distribution network cable manhole cover according to claim 1, characterized in that: The method of analyzing the well environment data based on the pre-built environment state analysis model to obtain the state analysis data of the cable well includes: Calculating dynamic statistics of each of the well environment data based on affine relationship theory; The current state and change trend of the environment in the well are analyzed according to each of the dynamic statistics to obtain state analysis data in the cable well.

5. A state monitoring system based on a cable manhole cover of a distribution network, comprising a main processor and a cable manhole cover, a sensor component, an alarm component and a communication component respectively controlled by the main processor; The main processor is arranged on the cable well cover, and the cable well cover is configured to implement the state monitoring method based on the distribution network cable well cover according to claims 1 to 4; The signal output end of the sensor assembly is communicatively connected with the cable well cover; the sensor assembly includes a horizontal placement sensor, a plurality of environmental sensors and a plurality of current sensors; The alarm component is arranged on the cable well cover, and the alarm component is communicatively connected with the main processor; The communication component is arranged on the cable well cover, the input end of the communication component is connected to the output end of the main processor, and the output end of the communication component is connected to the cloud communication.

6. The state monitoring system based on the distribution network cable manhole cover according to claim 5 is characterized in that: The system further comprises a battery assembly for providing power to devices in the system.

7. The state monitoring system based on the distribution network cable manhole cover according to claim 6 is characterized in that: The battery assembly comprises a lithium battery pack and a solar charger, and the input end of the lithium battery pack is connected to the output end of the solar charger.

8. The state monitoring system based on the cable manhole cover of the distribution network according to claim 5, characterized in that: The system also includes a positioning device and a timing chip, and the timing chip synchronizes time with the satellite.

9. The state monitoring system based on the distribution network cable manhole cover according to claim 5, characterized in that: The current sensor is arranged in the shielding layer of the cable in the cable well, and each current sensor corresponds to one cable.

10. The state monitoring system based on the cable manhole cover of the distribution network according to claim 5, characterized in that: The communication connection between the main processor and each sensor is achieved through a ZigBee network.

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