CN113033834A - Ice coating intelligent sensing and early warning method based on Internet of things power communication cable - Google Patents
Ice coating intelligent sensing and early warning method based on Internet of things power communication cable Download PDFInfo
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Abstract
The invention discloses an ice coating intelligent sensing and early warning method based on an Internet of things power communication cable, and relates to the technical field of on-line monitoring of power transmission lines. The method comprises the steps of building a monitoring main machine on a central main tower; monitoring extension machines are set up on the auxiliary towers on the two sides of the central main tower; a camera on the monitoring main machine collects images of the power transmission lines on two sides for compression processing; the method comprises the following steps that data collected by sensors on a monitoring main branch machine and a monitoring branch machine are preprocessed; uploading the preprocessed data and the power transmission line image to a monitoring center through GPRS; and the monitoring center inputs the uploaded data into the icing calculation model, and the icing data is calculated. According to the invention, by building the monitoring host and the double monitoring auxiliary machines, and by combining various sensing monitoring and image monitoring technologies, the acquired data is input into the icing calculation model to obtain the icing thickness of the wire, so that the economic loss caused by power grid paralysis due to damage to the power transmission line caused by too heavy icing is avoided.
Description
Technical Field
The invention belongs to the technical field of on-line monitoring of power transmission lines, and particularly relates to an ice coating intelligent sensing and early warning method based on an internet of things power communication cable.
Background
In rainy and snowy days, the tension of the transmission line is increased, when the transmission line is in heavy snow days, the transmission line erected in the field is very easy to accumulate snow or cover ice, so that the tension of the line is further increased, and if the accumulated snow covered by the transmission line is not cleared in time and is frozen and then accumulated, the line is easily broken, and other accidents are easily caused, so that the large-area power failure phenomenon is caused, great inconvenience is brought to social production and life, and meanwhile, great economic loss is caused; therefore, the condition of ice and snow covering of the power transmission line needs to be monitored in real time, most of the existing power transmission line monitoring systems are monitored through manual inspection, all-weather monitoring on complex terrains cannot be realized, so that a device or a system which can monitor the condition of ice and snow covering of the power transmission line in all weather and all shapes is urgently needed to be used through a power transmission line on-line monitoring system, a worker can timely know the field condition of the power transmission line, so that when the ice is excessively thick on the power transmission line, deicing measures are timely taken, and the major loss of the large-area paralysis of the power grid.
Disclosure of Invention
The invention aims to provide an ice coating intelligent sensing and early warning method based on an Internet of things power communication cable.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the invention relates to an ice coating intelligent sensing and early warning method based on an Internet of things power communication cable, which is applied to a cable ice coating monitoring and early warning system; the method comprises the following steps:
step S1: a monitoring main machine is set up on the central main tower;
step S2: monitoring extension machines are set up on the auxiliary towers on the two sides of the central main tower;
step S3: a camera on the monitoring main machine collects images of the power transmission lines on two sides for compression processing;
step S4: the method comprises the following steps that data collected by sensors on a monitoring main branch machine and a monitoring branch machine are preprocessed;
step S5: uploading the preprocessed data and the power transmission line image to a monitoring center through GPRS;
step S6: the monitoring center inputs the uploaded data into an icing calculation model, and the icing data is obtained through calculation;
step S7: and when the icing data exceeds a preset threshold value, early warning is carried out.
Preferably, the cable icing monitoring and early warning system comprises a monitoring center, a sensor unit, a monitoring main machine, a monitoring branch machine and an image monitoring unit; the monitoring center is a monitoring center host; the monitoring center host is used for calculating the icing condition of the wire according to the uploaded data and giving early warning information after ice is given out in time; the monitoring sub-host is arranged on the central main tower and is used for monitoring field images, microclimate, conductor icing load of the central main tower and inclination angle of the insulator string and processing data; the monitoring branch machines are arranged on tower poles on two sides of the central main rod and used for monitoring ice coating loads of the tower poles on two sides, inclination angles of the insulator strings and temperature and transmitting monitoring information to the monitoring branch main machines through a ZigBee network; and the sensor unit is used for being connected with the monitoring extension set through an RS485 communication line.
Preferably, the monitoring main machine comprises an MCU main control unit, a wireless communication unit, a data storage module, a power supply module, a sensor monitoring unit and an image monitoring unit; the wireless communication unit comprises a GPRS communication module and a ZigBee communication module; the image monitoring unit is a camera; the camera is connected with the MCU through the image compression module; the image compression module compresses the ice-coated field image collected by the camera and transmits the compressed image to the monitoring main machine in real time through RS 485; the MCU main control unit is used for receiving data and calculating, storing effective numerical values and the data storage module, and transmitting monitoring information to the monitoring center through the GPRS communication module.
Preferably, the sensor monitoring unit comprises a tension sensor, an inclination angle sensor, a temperature and humidity sensor, a wind speed and direction sensor, an air pressure sensor and a rainfall sensor; the tension sensor, the inclination angle sensor, the temperature and humidity sensor, the wind speed and direction sensor, the air pressure sensor and the rainfall sensor are all connected with the MCU main control unit through the signal processing module; and the signal processing module is used for sequentially amplifying, filtering and A/D converting the data acquired by the sensor and transmitting the data to the MCU main control unit through RS 485.
Preferably, the monitoring extension comprises a main control power supply, a power supply module, a ZigBee communication module, a wire temperature monitoring unit, an inclination angle sensor and a tension sensor; the wire temperature monitoring unit is used for monitoring the temperature of the wire; the lead temperature monitoring unit comprises an MCU model, a power supply module and a lead temperature sensor; the wire temperature monitoring unit collects the wire temperature and sends the wire temperature to the monitoring extension set through the ZigBee communication module, the monitoring extension set processes the data, and the processed data are sent to the detection host through the ZigBee communication module according to preset time.
Preferably, in step S3, the camera acquires images of the power transmission lines on two sides, including images of the power transmission lines without ice coating and images of the power transmission lines with ice coating; and after the transmission line image is compressed, uploading the transmission line image to a monitoring center.
Preferably, in step S5, the monitoring center performs preprocessing on the compressed image of the power transmission line; the preprocessing comprises preprocessing the images of the power transmission line which is not coated with ice and preprocessing the images of the power transmission line which is coated with ice;
the pre-processing of the images of the power transmission line without ice coating comprises gray processing to obtain a gray image without ice coating and filtering processing to obtain a filtering image without ice coating;
the ice-coated power transmission line image preprocessing comprises gray processing to obtain an ice-coated gray image and filtering processing to obtain an ice-coated filtering image.
Preferably, in step S6, a central main rod tower is a, two side sub-towers are B and C, respectively, and a vertical tension T of the central main rod tower insulator string is usedVAnd the vertical load on the wire from the lowest point of the wires at the two sides to the A point of the main rod tower are balanced, and the following results are obtained:
obtaining the comprehensive load concentration q of ice and wind:
preferably, in step S8, the icing calculation model is:
if the ice coating is formed into a uniform cylinder, the equivalent ice coating thickness is:
in the formula, r0D is the diameter of the wire, which is the mass density of the ice.
The invention has the following beneficial effects:
according to the invention, by building the monitoring host machine and the double monitoring auxiliary machines, and by combining various sensing monitoring and image monitoring technologies, the acquired data is input into the icing calculation model to obtain the icing thickness of the wire, and when the icing thickness reaches a warning value, an alarm is timely sent out to inform workers to clear the wire, so that the economic loss caused by power grid paralysis due to the fact that the icing is too heavy and the power transmission line is damaged is avoided.
Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a step diagram of an ice coating intelligent sensing and early warning method based on an Internet of things power communication cable according to the invention;
FIG. 2 is a schematic structural diagram of a cable icing monitoring and early warning system;
FIG. 3 is a schematic diagram of a monitoring main machine;
fig. 4 is a schematic diagram of a monitoring extension.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-2, the invention relates to an ice coating intelligent sensing and early warning method based on an internet of things power communication cable, which is applied to a cable ice coating monitoring and early warning system; the method comprises the following steps:
step S1: a monitoring main machine is set up on the central main tower;
step S2: monitoring extension machines are set up on the auxiliary towers on the two sides of the central main tower;
step S3: a camera on the monitoring main machine collects images of the power transmission lines on two sides for compression processing;
step S4: the method comprises the following steps that data collected by sensors on a monitoring main branch machine and a monitoring branch machine are preprocessed;
step S5: uploading the preprocessed data and the power transmission line image to a monitoring center through GPRS;
step S6: the monitoring center inputs the uploaded data into an icing calculation model, and the icing data is obtained through calculation;
step S7: and when the icing data exceeds a preset threshold value, early warning is carried out.
The cable icing monitoring and early warning system comprises a monitoring center, a sensor unit, a monitoring main machine, a monitoring branch machine and an image monitoring unit; the monitoring center is a monitoring center host; the monitoring center host is used for calculating the icing condition of the wire according to the uploaded data and giving early warning information after ice is given out in time; the monitoring sub-host is arranged on the central main tower and is used for monitoring field images, microclimate, conductor icing load of the central main tower and inclination angle of the insulator string and processing data; the monitoring branch machine is arranged on the tower poles on the two sides of the central main pole and is used for monitoring the ice coating load of the wires of the tower poles on the two sides, the inclination angle of the insulator string and the temperature and transmitting monitoring information to the monitoring branch main machine through a ZigBee network; and the sensor unit is used for being connected with the monitoring extension set through an RS485 communication line.
In step S3, the camera acquires images of the power transmission lines on both sides, including images of the power transmission lines without ice coating and images of the power transmission lines with ice coating; and after the transmission line image is compressed, uploading the transmission line image to a monitoring center.
In step S5, the monitoring center preprocesses the compressed image of the power transmission line; the preprocessing comprises preprocessing the images of the power transmission line which is not coated with ice and preprocessing the images of the power transmission line which is coated with ice;
the method comprises the following steps of preprocessing an ice-free power transmission line image, wherein the preprocessing comprises gray processing to obtain an ice-free gray image and filtering processing to obtain an ice-free filtering image;
the ice-coated power transmission line image preprocessing comprises the steps of obtaining an ice-coated gray image through gray processing and obtaining an ice-coated filtering image through filtering processing.
In step S6, a central main rod tower column is a, two side sub-towers are B and C, and a vertical tension T is generated by the central main rod tower column insulator stringVAnd the vertical load on the wire from the lowest point of the wires at the two sides to the A point of the main rod tower are balanced, and the following results are obtained:
obtaining the comprehensive load concentration q of ice and wind:
in step S8, the icing calculation model is:
if the ice coating is formed into a uniform cylinder, the equivalent ice coating thickness is:
in the formula, r0D is the diameter of the wire, which is the mass density of the ice.
When the thickness of the ice coating exceeds a preset threshold value, a worker is informed to go to the ice-coated wire section to carry out ice coating removal, and the ice coating is prevented from breaking the power transmission line.
Referring to fig. 3, the monitoring host computer includes an MCU main control unit, a wireless communication unit, a data storage module, a power module, a sensor monitoring unit, and an image monitoring unit; the wireless communication unit comprises a GPRS communication module and a ZigBee communication module; the image monitoring unit is a camera; the camera is connected with the MCU through the image compression module; the image compression module compresses the ice-coated field image collected by the camera and transmits the compressed image to the monitoring main machine in real time through RS 485; the MCU main control unit is used for receiving data and calculating, storing effective numerical values and the data storage module, and transmitting monitoring information to the monitoring center through the GPRS communication module.
The sensor monitoring unit comprises a tension sensor, an inclination angle sensor, a temperature and humidity sensor, a wind speed and direction sensor, an air pressure sensor and a rainfall sensor; the tension sensor, the inclination angle sensor, the temperature and humidity sensor, the wind speed and direction sensor, the air pressure sensor and the rainfall sensor are all connected with the MCU main control unit through the signal processing module; and the signal processing module is used for sequentially amplifying, filtering and A/D converting the data acquired by the sensor and transmitting the data to the MCU main control unit through RS 485.
Referring to fig. 4, the monitoring extension includes a main control power supply, a power supply module, a ZigBee communication module, a wire temperature monitoring unit, an inclination sensor, and a tension sensor; the wire temperature monitoring unit is used for monitoring the wire temperature; the lead temperature monitoring unit comprises an MCU model, a power supply module and a lead temperature sensor; the wire temperature monitoring unit collects the wire temperature and sends the wire temperature to the monitoring extension set through the ZigBee communication module, the monitoring extension set processes the data, and the processed data are sent to the detection host through the ZigBee communication module according to preset time.
It should be noted that, in the above system embodiment, each included unit is only divided according to functional logic, but is not limited to the above division as long as the corresponding function can be implemented; in addition, specific names of the functional units are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present invention.
In addition, it is understood by those skilled in the art that all or part of the steps in the method for implementing the embodiments described above may be implemented by a program instructing associated hardware, and the corresponding program may be stored in a computer-readable storage medium.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (9)
1. An ice coating intelligent sensing and early warning method based on an internet of things power communication cable is characterized in that the ice coating intelligent sensing and early warning method of the cable is applied to a cable ice coating monitoring early warning system; the method comprises the following steps:
step S1: a monitoring main machine is set up on the central main tower;
step S2: monitoring extension machines are set up on the auxiliary towers on the two sides of the central main tower;
step S3: a camera on the monitoring main machine collects images of the power transmission lines on two sides for compression processing;
step S4: the method comprises the following steps that data collected by sensors on a monitoring main branch machine and a monitoring branch machine are preprocessed;
step S5: uploading the preprocessed data and the power transmission line image to a monitoring center through GPRS;
step S6: the monitoring center inputs the uploaded data into an icing calculation model, and the icing data is obtained through calculation;
step S7: and when the icing data exceeds a preset threshold value, early warning is carried out.
2. The ice coating intelligent sensing and early warning method based on the power communication cable of the internet of things according to claim 1, wherein the cable ice coating monitoring and early warning system comprises a monitoring center, a sensor unit, a monitoring main machine, a monitoring branch machine and an image monitoring unit; the monitoring center is a monitoring center host; the monitoring center host is used for calculating the icing condition of the wire according to the uploaded data and giving early warning information after ice is given out in time; the monitoring sub-host is arranged on the central main tower and is used for monitoring field images, microclimate, conductor icing load of the central main tower and inclination angle of the insulator string and processing data; the monitoring branch machines are arranged on tower poles on two sides of the central main rod and used for monitoring ice coating loads of the tower poles on two sides, inclination angles of the insulator strings and temperature and transmitting monitoring information to the monitoring branch main machines through a ZigBee network; and the sensor unit is used for being connected with the monitoring extension set through an RS485 communication line.
3. The ice coating intelligent sensing and early warning method based on the power communication cable of the internet of things according to claim 2, wherein the monitoring main machine comprises an MCU main control unit, a wireless communication unit, a data storage module, a power supply module, a sensor monitoring unit and an image monitoring unit; the wireless communication unit comprises a GPRS communication module and a ZigBee communication module; the image monitoring unit is a camera; the camera is connected with the MCU through the image compression module; the image compression module compresses the ice-coated field image collected by the camera and transmits the compressed image to the monitoring main machine in real time through RS 485; the MCU main control unit is used for receiving data and calculating, storing effective numerical values and the data storage module, and transmitting monitoring information to the monitoring center through the GPRS communication module.
4. The ice coating intelligent sensing and early warning method based on the power communication cable of the Internet of things according to claim 3, wherein the sensor monitoring unit comprises a tension sensor, an inclination sensor, a temperature and humidity sensor, a wind speed and direction sensor, an air pressure sensor and a rainfall sensor; the tension sensor, the inclination angle sensor, the temperature and humidity sensor, the wind speed and direction sensor, the air pressure sensor and the rainfall sensor are all connected with the MCU main control unit through the signal processing module; and the signal processing module is used for sequentially amplifying, filtering and A/D converting the data acquired by the sensor and transmitting the data to the MCU main control unit through RS 485.
5. The ice coating intelligent sensing and early warning method based on the power communication cable of the Internet of things according to claim 2, wherein the monitoring extension comprises a main control power supply, a power supply module, a ZigBee communication module, a wire temperature monitoring unit, an inclination angle sensor and a tension sensor; the wire temperature monitoring unit is used for monitoring the temperature of the wire; the lead temperature monitoring unit comprises an MCU model, a power supply module and a lead temperature sensor; the wire temperature monitoring unit collects the wire temperature and sends the wire temperature to the monitoring extension set through the ZigBee communication module, the monitoring extension set processes the data, and the processed data are sent to the detection host through the ZigBee communication module according to preset time.
6. The ice coating intelligent sensing and early warning method based on the power communication cable of the internet of things according to claim 1, wherein in the step S3, the camera collects images of the power transmission lines on two sides, including images of the power transmission lines without ice coating and images of the power transmission lines with ice coating; and after the transmission line image is compressed, uploading the transmission line image to a monitoring center.
7. The ice coating intelligent sensing and early warning method based on the power communication cable of the internet of things according to claim 1, wherein in the step S5, the monitoring center preprocesses the compressed image of the power transmission line; the preprocessing comprises preprocessing the images of the power transmission line which is not coated with ice and preprocessing the images of the power transmission line which is coated with ice;
the pre-processing of the images of the power transmission line without ice coating comprises gray processing to obtain a gray image without ice coating and filtering processing to obtain a filtering image without ice coating;
the ice-coated power transmission line image preprocessing comprises gray processing to obtain an ice-coated gray image and filtering processing to obtain an ice-coated filtering image.
8. The method of claim 1The ice coating intelligent sensing and early warning method based on the Internet of things power communication cable is characterized in that in the step S6, a central main rod tower column is set to be A, auxiliary towers on two sides are respectively set to be B and C, and tension T in the vertical direction of a central main rod tower column insulator string is used for providing tension to the auxiliary towersVAnd the vertical load on the wire from the lowest point of the wires at the two sides to the A point of the main rod tower are balanced, and the following results are obtained:
obtaining the comprehensive load concentration q of ice and wind:
9. the ice coating intelligent sensing and early warning method based on the power communication cable of the internet of things according to claim 1 or 8, wherein in the step S8, the ice coating calculation model is as follows:
if the ice coating is formed into a uniform cylinder, the equivalent ice coating thickness is:
in the formula, r0D is the diameter of the wire, which is the mass density of the ice.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115239997A (en) * | 2022-07-19 | 2022-10-25 | 哈尔滨市爱硕电力工程有限公司 | High and cold area transmission line shaft tower state monitoring system based on 5G thing networking |
| CN116255916A (en) * | 2022-12-13 | 2023-06-13 | 杭州马太能源互联网技术有限公司 | Device and method for monitoring icing of power transmission line |
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| CN103017714A (en) * | 2012-12-10 | 2013-04-03 | 西安工程大学 | Online monitoring system and monitoring method for equivalent icing thicknesses of power transmission lines |
| CN103033216A (en) * | 2012-12-03 | 2013-04-10 | 西安工程大学 | On-line monitoring system and monitoring method for icing density of electric transmission line |
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| CN103033216A (en) * | 2012-12-03 | 2013-04-10 | 西安工程大学 | On-line monitoring system and monitoring method for icing density of electric transmission line |
| CN103017714A (en) * | 2012-12-10 | 2013-04-03 | 西安工程大学 | Online monitoring system and monitoring method for equivalent icing thicknesses of power transmission lines |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115239997A (en) * | 2022-07-19 | 2022-10-25 | 哈尔滨市爱硕电力工程有限公司 | High and cold area transmission line shaft tower state monitoring system based on 5G thing networking |
| CN115239997B (en) * | 2022-07-19 | 2023-06-09 | 哈尔滨市爱硕电力工程有限公司 | High and cold region transmission line tower state monitoring system based on 5G Internet of things |
| CN116255916A (en) * | 2022-12-13 | 2023-06-13 | 杭州马太能源互联网技术有限公司 | Device and method for monitoring icing of power transmission line |
| CN116255916B (en) * | 2022-12-13 | 2024-04-16 | 杭州马太能源互联网技术有限公司 | Device and method for monitoring icing of power transmission line |
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Application publication date: 20210625 |