CN112857584A - Temperature rise monitoring system for transformer substation overhead line - Google Patents
Temperature rise monitoring system for transformer substation overhead line Download PDFInfo
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- CN112857584A CN112857584A CN202110265121.9A CN202110265121A CN112857584A CN 112857584 A CN112857584 A CN 112857584A CN 202110265121 A CN202110265121 A CN 202110265121A CN 112857584 A CN112857584 A CN 112857584A
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 91
- 238000003384 imaging method Methods 0.000 claims abstract description 23
- 238000001931 thermography Methods 0.000 claims abstract description 10
- 230000007613 environmental effect Effects 0.000 claims abstract description 5
- 239000000523 sample Substances 0.000 claims description 12
- 230000000694 effects Effects 0.000 claims description 11
- 238000007689 inspection Methods 0.000 claims description 5
- 238000012423 maintenance Methods 0.000 claims description 5
- 238000004040 coloring Methods 0.000 claims description 3
- 238000009877 rendering Methods 0.000 claims description 3
- 238000009529 body temperature measurement Methods 0.000 abstract description 4
- 238000003331 infrared imaging Methods 0.000 abstract description 4
- 238000001514 detection method Methods 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 abstract description 2
- 230000035945 sensitivity Effects 0.000 abstract description 2
- 230000000007 visual effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000006467 substitution reaction Methods 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002510 pyrogen Substances 0.000 description 2
- 206010037660 Pyrexia Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000001698 pyrogenic effect Effects 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/0096—Radiation pyrometry, e.g. infrared or optical thermometry for measuring wires, electrical contacts or electronic systems
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/02—Constructional details
- G01J5/06—Arrangements for eliminating effects of disturbing radiation; Arrangements for compensating changes in sensitivity
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/02—Constructional details
- G01J5/06—Arrangements for eliminating effects of disturbing radiation; Arrangements for compensating changes in sensitivity
- G01J5/064—Ambient temperature sensor; Housing temperature sensor; Constructional details thereof
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Abstract
The invention provides a temperature rise monitoring system for an overhead line of a transformer substation, which comprises: the system comprises an ambient temperature sensor, an infrared thermal imaging unmanned aerial vehicle, a data acquisition box and a temperature rise monitoring terminal; the environment temperature sensor is arranged on a monitoring node of the overhead line and used for acquiring the environment temperature of the monitoring node; the temperature rise monitoring terminal comprises an imaging modeling unit and a fault positioning unit; and the data acquisition box receives the data of the ambient temperature sensor and the infrared thermal imaging unmanned aerial vehicle and uploads the data to the temperature rise monitoring terminal. The invention utilizes the infrared imaging temperature measurement technology with high sensitivity and reliable data; the infrared imaging is acquired by means of the unmanned aerial vehicle, the influence of environmental factors is not limited, the application range is wide, power failure detection is not needed, and the safety factor of non-direct contact is higher; and a three-dimensional virtual scene of the temperature measurement of the transformer substation overhead line is established, so that the monitoring aspect is more visual.
Description
Technical Field
The invention belongs to the technical field of transformer substation maintenance, and particularly relates to a transformer substation overhead line temperature rise monitoring system.
Background
The overhead outgoing line sleeve of the 220kV or 110kV line of the transformer substation is higher than the ground, and the through-flow or magnetic conduction part of the outgoing line sleeve can generate a heating effect in the daily operation process. Normally, the heating effect does not affect the safe operation of the equipment. However, if the temperature rise problem caused by the faults of bolt fastening degree, uneven coating of the conductive paste, insulation aging, partial discharge, high-voltage leakage and the like occurs, the connection and contact points of the conductive parts are caused, load current acts on the conductive resistor, local overheating is generated, and the safe and stable operation of the power grid may be threatened.
The temperature rise problem of the transformer substation overhead line cannot be effectively monitored through manual means, the mode of temperature detection is carried out through a fixed temperature sensor at present, omission is easily caused, the overhead line is criss-cross, and maintenance work of the transformer substation is aggravated by adding numerous sensing devices.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a temperature rise monitoring system for an overhead line of a transformer substation, so as to solve the technical problems.
The invention provides a temperature rise monitoring system for an overhead line of a transformer substation, which comprises: the system comprises an ambient temperature sensor, an infrared thermal imaging unmanned aerial vehicle, a data acquisition box and a temperature rise monitoring terminal; the environment temperature sensor is arranged on a monitoring node of the overhead line and used for acquiring the environment temperature of the monitoring node; the temperature rise monitoring terminal comprises an imaging modeling unit and a fault positioning unit; the data acquisition box receives data of the ambient temperature sensor and the infrared thermal imaging unmanned aerial vehicle and uploads the data to the temperature rise monitoring terminal;
the infrared thermal image unmanned aerial vehicle is used for receiving infrared hot wires radiated outwards by an overhead line to obtain an infrared hot wire image of a monitoring node when the infrared thermal image unmanned aerial vehicle reaches a preset receiving point, and the receiving point is a position which is in the vertical direction of a line where the monitoring node is located and can receive the optimal infrared hot wire;
the infrared thermal image unmanned aerial vehicle is also provided with a GPS positioning module for recording coordinate information when the infrared thermal image unmanned aerial vehicle reaches a receiving point;
the data acquisition box is used for calculating the GPS coordinates of the monitoring nodes according to the coordinate information of the receiving points and the distance between the preset receiving points and the monitoring nodes, and integrating the GPS coordinates of the monitoring nodes, the infrared hotline images and the environmental temperature as imaging data of the three-dimensional virtual scene;
the imaging modeling unit is used for generating a three-dimensional virtual scene of the transformer substation overhead line through 3D modeling according to the imaging data of the three-dimensional virtual scene;
the fault positioning unit is used for judging the monitoring node with the monitoring temperature higher than the environmental temperature and exceeding a preset range as a fault node generating a thermal effect, and performing coloring rendering on the fault node in the three-dimensional virtual scene.
Furthermore, the infrared thermal image unmanned aerial vehicle is provided with three infrared thermal image probes at equal intervals, and when the infrared thermal image probes at the middle position reach the receiving point, the three infrared thermal image probes simultaneously acquire infrared hot line images of the monitoring nodes.
Furthermore, the imaging modeling unit is further used for drawing a three-dimensional space stereo image of the monitoring node according to the three infrared ray images and the GPS coordinates of the monitoring node, taking the ambient temperature as a three-dimensional space background, and generating a three-dimensional virtual scene of the transformer substation by performing 3D modeling on the plurality of monitoring nodes.
Furthermore, the infrared thermal imaging unmanned aerial vehicle is provided with a spiral sensor for recording space movement information during scanning of the unmanned aerial vehicle.
Further, the temperature rise monitoring terminal further comprises: the path presetting unit is used for carrying out sectional type monitoring on the overhead line, each section of overhead line is provided with a node, the nodes capable of achieving ideal imaging are set as overhead line monitoring nodes, and the optimal routing inspection path of the unmanned aerial vehicle is set according to the space moving information of the unmanned aerial vehicle scanning monitoring nodes.
Further, the system further comprises: and the alarm unit is used for sending the GPS coordinates of the fault node to the staff of the maintenance department.
Further, the system further comprises: and the 3D imaging display large screen is used for displaying the three-dimensional virtual scene of the transformer substation overhead line in real time.
Further, the system further comprises: and the unmanned aerial vehicle control terminal is used for remotely controlling the movement track of the unmanned aerial vehicle.
The beneficial effect of the invention is that,
the transformer substation overhead line temperature rise monitoring system provided by the invention has high sensitivity and reliable data by utilizing an infrared imaging temperature measurement technology; the infrared imaging is acquired by means of the unmanned aerial vehicle, the influence of environmental factors is not limited, the application range is wide, power failure detection is not needed, and the safety factor of non-direct contact is higher; establishing a three-dimensional virtual scene of the temperature measurement of the transformer substation overhead line, so that the monitoring aspect is more visual; meanwhile, the data obtained by comparison with the ambient temperature is more accurate, so that the time is saved for timely eliminating the shortage, and the reliability of the operation of the power grid line is improved.
In addition, the invention has reliable design principle, simple structure and very wide application prospect.
Drawings
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
FIG. 1 is a schematic block diagram of a system according to an embodiment of the present application;
FIG. 2 is a schematic block diagram of a system according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of a system according to an embodiment of the present application.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not all 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.
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
Example 1
As shown in fig. 1, an embodiment of the present application provides a substation overhead line temperature rise monitoring system, including: the system comprises an ambient temperature sensor, an infrared thermal imaging unmanned aerial vehicle, a data acquisition box and a temperature rise monitoring terminal; the temperature rise monitoring terminal comprises an imaging modeling unit and a fault positioning unit; and the data acquisition box receives the data of the ambient temperature sensor and the infrared thermal imaging unmanned aerial vehicle and uploads the data to the temperature rise monitoring terminal.
(1) In order to realize a virtual scene with a 3D imaging effect, three thermal infrared image probes are arranged on the thermal infrared image unmanned aerial vehicle to scan an overhead line of a transformer substation, and three same thermal infrared image probes are used for acquiring three infrared heat ray images of the same monitoring node and in different directions; each monitoring node corresponds to a receiving point, the infrared thermal image unmanned aerial vehicle starts to work after being parked at the receiving point, the receiving point is in the vertical direction of the line of the monitoring node and can receive the position of the optimal infrared hot line, the optimal measuring distance of the infrared thermal image probe product is obtained, and the position reaching the optimal measuring distance on the line of the monitoring node is the receiving point of the unmanned aerial vehicle;
when the infrared thermal image unmanned aerial vehicle reaches a receiving point, the three infrared thermal image probes obtain three infrared hot wire images by receiving infrared hot wires radiated outwards by the overhead line, and the infrared hot wire images at the moment are two-dimensional plane images. This application sets up three infrared thermal imagery probe, can make the wider coverage overhead line of infrared ray.
(2) The infrared thermal imagery unmanned aerial vehicle still sets up the coordinate information when unmanned aerial vehicle reachs the receiving point when GPS orientation module record scans to and set up spiral sensor record unmanned aerial vehicle's space movement information, conveniently track unmanned aerial vehicle's the orbit of traveling, be favorable to the follow-up setting of patrolling and examining the route, and acquire unmanned aerial vehicle's coordinate information and be favorable to the information contrast and the formation of image integration of the three-dimensional virtual scene of transformer substation overhead line in different regions.
(3) The embodiment is provided with a data acquisition box, on one hand, data of the environment temperature sensor are acquired, the environment temperature data are processed and uploaded, the corresponding relation between the ratio and the temperature is preset by calculating the ratio of the voltage of one end, close to a power supply, of the thermistor to the voltage of one end, far away from the power supply, of the thermistor, and the real-time temperature of the environment where the thermistor is located is determined according to the real-time ratio; the data acquisition box of second aspect is still used for uploading the data that infrared ray unmanned aerial vehicle gathered, includes: infrared heat ray images and space movement information of the unmanned aerial vehicle; and in a third aspect, the data acquisition box is used for calculating a GPS coordinate of the monitoring node according to the coordinate information of the receiving point when the unmanned aerial vehicle reaches the receiving point and the distance between the preset receiving point and the monitoring node, namely the position for receiving the optimal infrared hot line, integrating the GPS coordinate, the infrared hot line image and the ambient temperature as imaging data of the three-dimensional virtual scene, and establishing a corresponding relation with the monitoring node.
(4) The method comprises the steps that a temperature rise monitoring terminal is arranged in a monitoring center of the transformer substation, an imaging modeling unit of the temperature rise monitoring terminal can draw a three-dimensional space stereo image of a monitoring node based on three infrared heat ray images and a GPS coordinate of the monitoring node, the ambient temperature is used as a three-dimensional space background, and a three-dimensional virtual scene of the transformer substation is generated by performing 3D modeling on a plurality of monitoring nodes; the method comprises the steps of setting a plurality of monitoring nodes for the overhead line, simultaneously ensuring that all the monitoring nodes can cover the overhead line of the whole transformer substation, and summarizing three-dimensional virtual scenes of the monitoring nodes to obtain the three-dimensional virtual scene of the overhead line of the whole transformer substation.
(5) This application adopts the mode of comparing with ambient temperature, confirms to produce the fault position that leads to the thermal effect and rise, so this application divides overhead line according to the region segmentation, sets up the real-time temperature of environment temperature sensor collection environment on the monitoring node in every region, set up thermistor in the ambient temperature sensor, when overhead line temperature is higher than ambient temperature and surpasss the scope of predetermineeing, then show that this position exists the trouble that causes the thermal effect. In this embodiment, the method for determining the generation of the pyrogenic effect is: the monitoring temperature surpasses ambient temperature, and the scope that surpasss reaches the threshold value that can trigger the thermal effect, if ambient temperature is 24 degrees centigrade, overhead line can be because the cable heat absorption is more than 24 degrees centigrade under the normal condition, and the setting is predetermine the scope and is 3 degrees centigrade, and when the temperature of monitoring node reached 30 degrees centigrade, surpassed ambient temperature, and surpassed and predetermine the scope, then judged to produce and send the fever effect.
(6) The fault positioning unit carries out fault positioning on the monitoring node causing the pyrogenicity effect, and carries out coloring and rendering on the fault positioned line part in the three-dimensional virtual scene, so that the monitoring node is convenient for workers to visually observe; the alarm unit sends the GPS coordinates of the monitoring nodes causing the pyrogenicity effect to the staff of the maintenance department, so that the related staff can conveniently repair the fault in time and maintain the normal operation of the overhead line of the transformer substation.
(7) The invention carries out sectional monitoring on the overhead line, each section of overhead line is provided with a node, as three infrared thermal imaging probes are installed at equal intervals, the node is arranged at the middle position of the section of line, a path presetting unit acquires the data of an imaging modeling unit, and carries out a plurality of experiments and analyses, the node which can achieve ideal imaging is set as the current overhead line monitoring node, and the optimal routing inspection path of the unmanned aerial vehicle is set according to the space movement information of the unmanned aerial vehicle scanning monitoring node, namely the optimal routing inspection path can acquire the three-dimensional imaging infrared hot line image of the substation overhead line in the shortest time, and is set as the working path of the unmanned aerial vehicle on the current overhead line, and when the unmanned aerial vehicle inspects the overhead line, the unmanned aerial vehicle can drive according to the optimal routing inspection path.
Example 2
As shown in fig. 2, an embodiment of the present application provides a substation overhead line temperature rise monitoring system, and on the basis of embodiment 1, the present embodiment adds: the 3D imaging display large screen displays a three-dimensional virtual scene of the transformer substation overhead line in real time through the large screen, and the temperature rise condition of the transformer substation overhead line is visually and clearly displayed.
Example 3
As shown in fig. 3, an embodiment of the present application provides a substation overhead line temperature rise monitoring system, and in this embodiment, on the basis of embodiment 2, there are added: the unmanned aerial vehicle control terminal is used for remotely controlling the motion trail of the unmanned aerial vehicle and remotely controlling the unmanned aerial vehicle to conduct infrared thermal image scanning by workers under special conditions or special requirements.
Although the present invention has been described in detail by referring to the drawings in connection with the preferred embodiments, the present invention is not limited thereto. Various equivalent modifications or substitutions can be made on the embodiments of the present invention by those skilled in the art without departing from the spirit and scope of the present invention, and these modifications or substitutions are within the scope of the present invention/any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. The utility model provides a transformer substation overhead line temperature rise monitored control system which characterized in that includes: the system comprises an ambient temperature sensor, an infrared thermal imaging unmanned aerial vehicle, a data acquisition box and a temperature rise monitoring terminal; the environment temperature sensor is arranged on a monitoring node of the overhead line and used for acquiring the environment temperature of the monitoring node; the temperature rise monitoring terminal comprises an imaging modeling unit and a fault positioning unit; the data acquisition box receives data of the ambient temperature sensor and the infrared thermal imaging unmanned aerial vehicle and uploads the data to the temperature rise monitoring terminal;
the infrared thermal image unmanned aerial vehicle is used for receiving infrared hot wires radiated outwards by an overhead line to obtain an infrared hot wire image of a monitoring node when the infrared thermal image unmanned aerial vehicle reaches a preset receiving point, and the receiving point is a position which is in the vertical direction of a line where the monitoring node is located and can receive the optimal infrared hot wire;
the infrared thermal image unmanned aerial vehicle is also provided with a GPS positioning module for recording coordinate information when the infrared thermal image unmanned aerial vehicle reaches a receiving point;
the data acquisition box is used for calculating the GPS coordinates of the monitoring nodes according to the coordinate information of the receiving points and the distance between the preset receiving points and the monitoring nodes, and integrating the GPS coordinates, the infrared hotline images and the environment temperature of the monitoring nodes as imaging data of the three-dimensional virtual scene; the imaging modeling unit is used for generating a three-dimensional virtual scene of the transformer substation overhead line through 3D modeling according to the imaging data of the three-dimensional virtual scene;
the fault positioning unit is used for judging the monitoring node with the monitoring temperature higher than the environmental temperature and exceeding a preset range as a fault node generating a thermal effect, and performing coloring rendering on the fault node in the three-dimensional virtual scene.
2. The substation overhead line temperature rise monitoring system according to claim 1, wherein the thermographic unmanned aerial vehicle is provided with three equally spaced thermographic probes, and when the thermographic probe at the middle position reaches the receiving point, the three thermographic probes simultaneously acquire infrared hot line images of the monitoring node.
3. The substation overhead line temperature rise monitoring system according to claim 2, wherein the imaging modeling unit is further configured to draw a three-dimensional space stereo image of the monitoring node according to the three infrared heat ray images and the GPS coordinates of the monitoring node, and generate a three-dimensional virtual scene of the substation by performing 3D modeling on the plurality of monitoring nodes with the ambient temperature as a three-dimensional space background.
4. The substation overhead line temperature rise monitoring system according to claim 1, wherein the infrared thermographic unmanned aerial vehicle is provided with a spiral sensor for recording space movement information during scanning of the unmanned aerial vehicle.
5. The substation overhead line temperature rise monitoring system according to claim 4, wherein the temperature rise monitoring terminal further comprises: the path presetting unit is used for carrying out sectional type monitoring on the overhead line, each section of overhead line is provided with a node, the nodes capable of achieving ideal imaging are set as overhead line monitoring nodes, and the optimal routing inspection path of the unmanned aerial vehicle is set according to the space moving information of the unmanned aerial vehicle scanning monitoring nodes.
6. The substation overhead line temperature rise monitoring system of claim 1, further comprising: and the alarm unit is used for sending the GPS coordinates of the fault node to the staff of the maintenance department.
7. The substation overhead line temperature rise monitoring system of claim 1, further comprising: and the 3D imaging display large screen is used for displaying the three-dimensional virtual scene of the transformer substation overhead line in real time.
8. The substation overhead line temperature rise monitoring system of claim 1, further comprising: and the unmanned aerial vehicle control terminal is used for remotely controlling the movement track of the unmanned aerial vehicle.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110265121.9A CN112857584B (en) | 2021-03-11 | 2021-03-11 | Temperature rise monitoring system for transformer substation overhead line |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110265121.9A CN112857584B (en) | 2021-03-11 | 2021-03-11 | Temperature rise monitoring system for transformer substation overhead line |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115219061A (en) * | 2022-09-13 | 2022-10-21 | 国网湖北省电力有限公司电力科学研究院 | Temperature monitoring method and system for on-load capacity and voltage regulating distribution transformer |
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| CN104298279A (en) * | 2014-10-23 | 2015-01-21 | 国家电网公司 | Transformer substation intelligent remote temperature control system based on infrared identification and passive sensing technology |
| CN107170045A (en) * | 2017-03-21 | 2017-09-15 | 国网湖北省电力公司检修公司 | The method being modeled based on cloud data to substation transformer |
| CN111652977A (en) * | 2020-04-17 | 2020-09-11 | 国网山西省电力公司晋中供电公司 | Intelligent roaming method for three-dimensional scene of transformer substation |
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| US20150009336A1 (en) * | 2012-01-12 | 2015-01-08 | Mission Infrared Electro Optics Technology Co., Ltd | Thermal imaging device and normative photographing method for thermal image |
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