CN114397322B - Heat dissipation index measurement method, system and device based on shadow compensation - Google Patents
Heat dissipation index measurement method, system and device based on shadow compensation Download PDFInfo
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- CN114397322B CN114397322B CN202111422103.3A CN202111422103A CN114397322B CN 114397322 B CN114397322 B CN 114397322B CN 202111422103 A CN202111422103 A CN 202111422103A CN 114397322 B CN114397322 B CN 114397322B
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- 230000017525 heat dissipation Effects 0.000 title claims abstract description 122
- 238000000691 measurement method Methods 0.000 title claims description 9
- 238000005259 measurement Methods 0.000 claims abstract description 51
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 38
- 229910052742 iron Inorganic materials 0.000 claims abstract description 19
- 238000000034 method Methods 0.000 claims abstract description 16
- 238000004590 computer program Methods 0.000 claims description 11
- 238000004364 calculation method Methods 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 abstract description 11
- 230000002411 adverse Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000001514 detection method Methods 0.000 description 6
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- 238000012545 processing Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
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- 238000006243 chemical reaction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/20—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
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- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
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Abstract
The invention discloses a heat dissipation index measuring method, a system and a device based on shadow compensation, wherein the method comprises the following steps: calculating the time span of the heat dissipation index measuring device covered by the cross arm projection of the iron tower in a preset date; under standard conditions, calculating an average deviation value of cross arm projection on a measured value of the heat dissipation index; and in the time span range, if the deviation value of the current heat dissipation index measurement value and the previous heat dissipation index measurement value is smaller than the average deviation value, replacing the current heat dissipation index measurement value with the previous heat dissipation index measurement value. The beneficial effects of the invention are as follows: the time span of the heat dissipation index measuring device covered by the cross arm projection of the iron tower in the preset date is calculated, and the heat dissipation index measured value is continuously corrected in the measuring process, so that adverse deviation of measurement caused by the influence of the cross arm shadow of the iron tower can be effectively reduced, the situation that the dynamic capacity increasing margin of a transmission line wire is too large is avoided, and the risk that the actual control running current value of the transmission line is larger is reduced.
Description
Technical Field
The invention relates to the technical field of heat dissipation index measurement, in particular to a heat dissipation index measurement method, system and device based on shadow compensation.
Background
Along with the increase of the power load, part of the heavy-load line of the power grid becomes an obvious power transmission bottleneck, and the power transmission potential of the existing line is mined through dynamic capacity increase, so that the method has important significance in relieving urban power supply pressure.
The Chinese patent application CN110361415A discloses a heat dissipation index measuring method, wherein a heat dissipation test body is used for measuring, and the measured heat dissipation index is mainly used for dynamically compatibilizing a circuit wire. However, since the heat dissipation index measuring device is usually installed on the south-facing side (applicable to northern hemisphere) of the middle of the transmission line iron tower, for the transmission line with east-west trend, when the sun approaches to direct irradiation, the heat dissipation test body may be in the shadow of the cross arm of the iron tower, resulting in inaccurate measured data and causing the risk of overlarge dynamic capacity increasing margin of the calculated transmission line wire.
Disclosure of Invention
Aiming at the problems, the invention provides a heat dissipation index measuring method, a system and a device based on shadow compensation, which mainly solve the problem that the existing heat dissipation index measuring method has inaccurate measured data.
In order to solve the above technical problems, a first aspect of the present invention provides a heat dissipation index measurement method based on shadow compensation, including the following steps:
step one, calculating a time span of the heat dissipation index measuring device covered by the cross arm projection of the iron tower in a preset date;
step two, under standard conditions, calculating an average deviation value of the cross arm projection on the measured value of the heat dissipation index;
and step three, in the time span range, if the deviation value of the current heat dissipation index measurement value and the previous heat dissipation index measurement value is smaller than the average deviation value, replacing the current heat dissipation index measurement value by the previous heat dissipation index measurement value.
In some embodiments, the method for calculating the time span is: acquiring longitude and latitude a of an iron tower where the heat dissipation index measuring device is located, acquiring orientation b of a cross arm and shape and size c of the cross arm, and acquiring height difference d between the heat dissipation index measuring device and the cross arm; and calculating the corresponding projection area and projection path of the cross arm projection in the preset date by combining the longitude and latitude a, the orientation b, the shape and dimension c and the height difference d, comparing the projection area and the projection path with the position of the heat dissipation index measuring device, and calculating the time span of the heat dissipation index measuring device covered by the cross arm projection.
In some embodiments, the standard condition is that there is no cloudy or rainy shade on a sunny day.
In some embodiments, the heat dissipation index measurement device obtains at least three heat dissipation index measurements as samples to determine the average deviation value.
In some embodiments, the longitude and latitude a are measured by a theodolite.
In some embodiments, the orientation b is measured by a compass.
In some embodiments, the shape dimension c is measured by a length detection device and used to build a three-dimensional model.
In some embodiments, the height difference d is measured by a length detection device.
A second aspect of the present invention provides a heat dissipation index measurement system based on shadow compensation, including:
the time span calculation unit is used for calculating the time span of the heat dissipation index measurement device covered by the cross arm projection of the iron tower in a preset date;
the average deviation value calculation unit is used for calculating the average deviation value of the cross arm projection on the heat dissipation index measured value under the standard condition;
and the heat dissipation index measurement unit is used for replacing the current heat dissipation index measurement value with the previous heat dissipation index measurement value when the deviation value of the current heat dissipation index measurement value and the previous heat dissipation index measurement value is smaller than the average deviation value within the time span range.
A third aspect of the present invention proposes a heat dissipation index measurement device based on shadow compensation, comprising a memory, a processor and a computer program stored in the memory and executable on the processor, the processor implementing the steps of the above method when executing the computer program.
The beneficial effects of the invention are as follows: the time span of the heat dissipation index measuring device covered by the cross arm projection of the iron tower in the preset date is calculated, and the heat dissipation index measured value is continuously corrected in the measuring process, so that adverse deviation of measurement caused by the influence of the cross arm shadow of the iron tower can be effectively reduced, the situation that the dynamic capacity increasing margin of a transmission line wire is too large is avoided, and the risk that the actual control running current value of the transmission line is larger is reduced.
Drawings
FIG. 1 is a flow chart of a heat dissipation index measurement method based on shadow compensation according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a heat dissipation index measurement system based on shadow compensation according to a second embodiment of the present invention;
fig. 3 is a schematic structural diagram of a heat dissipation index measurement device based on shadow compensation according to a third embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the drawings and the detailed description below, in order to make the objects, technical solutions and advantages of the present invention more clear and distinct. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the matters related to the present invention are shown in the accompanying drawings.
Example 1
The embodiment provides a heat dissipation index measurement method based on shadow compensation, as shown in fig. 1, comprising the following steps:
step one, calculating a time span of the heat dissipation index measuring device covered by the cross arm projection of the iron tower in a preset date;
the time span calculation method comprises the following steps: acquiring longitude and latitude a of an iron tower where the heat dissipation index measuring device is located, acquiring orientation b of a cross arm and shape and size c of the cross arm, and acquiring height difference d between the heat dissipation index measuring device and the cross arm; and calculating the corresponding projection area and projection path of the cross arm projection in a preset date by combining the longitude and latitude a, the orientation b, the shape and dimension c and the height difference d, comparing the projection area and the projection path with the position of the heat dissipation index measuring device, and calculating to obtain the time span of the heat dissipation index measuring device covered by the cross arm projection.
In this embodiment, since the solar altitude is objectively changed according to time, the solar altitude can be obtained by a conventional method, and therefore, only the latitude a, the direction b, the shape and dimension c and the altitude difference d are required to be obtained, the corresponding projection area and projection path of the cross arm projection in the preset date can be calculated, and then whether the cross arm projection has shielding interference on the heat dissipation index measuring device in the preset date can be judged, and finally the time span covered by the cross arm projection is obtained. For example, the designer's experiment time (i.e., preset date) is selected from 2021X month X day to 2021X month X day at a certain point, through the steps one to three, finally, the length of time (i.e. the time span) that the heat dissipation index measuring device is covered by the cross arm projection can be calculated.
Alternatively, the longitude and latitude a are measured by theodolite. The orientation b is measured by a compass. The shape and size c is measured by a length detection device and used for building a three-dimensional model. The height difference d is measured by the length detection means.
Step two, under the standard condition, calculating the average deviation value of the cross arm projection on the measured value of the heat dissipation index;
the standard condition is that no cloud and rain are shielded on a sunny day, and under the condition, the heat dissipation index measuring device at least obtains three heat dissipation index measuring values as samples to obtain an average deviation value.
And step three, in the time span range, if the deviation value of the current heat dissipation index measurement value and the previous heat dissipation index measurement value is smaller than the average deviation value, replacing the current heat dissipation index measurement value with the previous heat dissipation index measurement value.
According to the method, the device and the system, the time span of the heat dissipation index measuring device covered by the cross arm projection of the iron tower in the preset date is calculated, and the heat dissipation index measured value is continuously corrected in the measuring process, so that adverse deviation of measurement caused by the influence of the shadow of the cross arm of the iron tower can be effectively reduced, the situation that the dynamic capacity increasing margin of a wire of a transmission line is too large is avoided, and the risk that the actual control running current value of the transmission line is larger is reduced.
Example two
Referring to fig. 2, the present embodiment provides a heat dissipation index measurement system based on shadow compensation, including:
a time span calculation unit 201, configured to calculate a time span of the heat dissipation index measurement device covered by the cross arm projection of the iron tower within a preset date;
the time span calculation method comprises the following steps: acquiring longitude and latitude a of an iron tower where the heat dissipation index measuring device is located, acquiring orientation b of a cross arm and shape and size c of the cross arm, and acquiring height difference d between the heat dissipation index measuring device and the cross arm; and calculating the corresponding projection area and projection path of the cross arm projection in a preset date by combining the longitude and latitude a, the orientation b, the shape and dimension c and the height difference d, comparing the projection area and the projection path with the position of the heat dissipation index measuring device, and calculating to obtain the time span of the heat dissipation index measuring device covered by the cross arm projection.
Alternatively, longitude and latitude a are measured by a theodolite, orientation b is measured by a compass, shape and dimension c is measured by a length detection device and used for building a three-dimensional model, and height difference d is measured by the length detection device.
An average deviation value calculating unit 202, configured to calculate an average deviation value of the cross arm projection on the heat dissipation index measurement value under the standard condition;
the standard condition is that no cloud and rain are shielded on a sunny day, and the heat dissipation index measuring device at least obtains three heat dissipation index measuring values as samples to obtain an average deviation value.
The heat dissipation index measurement unit 203 is configured to replace the current heat dissipation index measurement value with the previous heat dissipation index measurement value if the deviation value between the current heat dissipation index measurement value and the previous heat dissipation index measurement value is smaller than the average deviation value within the time span range.
Example III
Referring to fig. 3, the heat dissipation index measurement device based on shadow compensation provided in this embodiment includes a processor 31, a memory 32, and a computer program 33 stored in the memory 32 and capable of running on the processor 31, such as a heat dissipation index measurement method program based on shadow compensation. The processor 31, when executing the computer program 33, implements the steps of the first embodiment described above, such as the steps shown in fig. 1.
Illustratively, the computer program 33 may be partitioned into one or more modules/units that are stored in the memory 32 and executed by the processor 31 to complete the present invention. The one or more modules/units may be a series of computer program instruction segments capable of performing a specific function for describing the execution of the computer program 33 in the shading compensation based heat dissipation index measuring device. For example, the computer program 33 may be divided into a conversion module and a matching operation module.
The heat dissipation index measuring device based on shadow compensation can be a computing device such as a desktop computer, a notebook computer, a palm computer and a cloud server. The heat dissipation index measurement device based on shadow compensation may include, but is not limited to, a processor 31, a memory 32. It will be appreciated by those skilled in the art that fig. 3 is merely an example of a shading compensation based heat dissipation index measuring device, and does not constitute a limitation of a shading compensation based heat dissipation index measuring device, and may include more or less components than illustrated, or may combine certain components, or different components, e.g., the shading compensation based heat dissipation index measuring device may further include an input/output device, a network access device, a bus, etc.
The processor 31 may be a central processing unit (Central Processing Unit, CPU), but may also be other general purpose processors, digital signal processors (Digital Signal Processor, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC), off-the-shelf programmable gate arrays (FieldProgrammable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory 32 may be an internal memory element of the shading-compensation-based heat dissipation index measuring device, such as a hard disk or a memory of the shading-compensation-based heat dissipation index measuring device. The memory 32 may also be an external storage device of the heat dissipation index measuring device based on shadow compensation, for example, a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash Card (Flash Card) or the like, which are provided on the heat dissipation index measuring device based on shadow compensation. Further, the memory 32 may also include both an internal memory unit and an external memory device of the shading-compensation-based heat dissipation index measuring device. The memory 32 is used to store the computer program and other programs and data required by the shading compensation based heat dissipation index measuring device. The memory 32 may also be used to temporarily store data that has been output or is to be output.
The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement the same, and are not intended to limit the scope of the present invention. All equivalent changes or modifications made in accordance with the essence of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. The heat dissipation index measuring method based on shadow compensation is characterized by comprising the following steps of:
calculating the time span of the heat dissipation index measuring device covered by the cross arm projection of the iron tower in a preset date;
under standard conditions, calculating an average deviation value of the cross arm projection on the measured value of the heat dissipation index; the standard condition is that no cloud and rain shielding exists on sunny days; the heat dissipation index measuring device at least obtains three heat dissipation index measurement values as samples to obtain the average deviation value;
and in the time span range, if the deviation value of the current heat dissipation index measurement value and the previous heat dissipation index measurement value is smaller than the average deviation value, replacing the current heat dissipation index measurement value with the previous heat dissipation index measurement value.
2. The shadow compensation-based heat dissipation index measurement method of claim 1, wherein the time span calculation method is as follows:
acquiring longitude and latitude a of an iron tower where the heat dissipation index measuring device is located, acquiring orientation b of a cross arm and shape and size c of the cross arm, and acquiring height difference d between the heat dissipation index measuring device and the cross arm;
and calculating the corresponding projection area and projection path of the cross arm projection in the preset date by combining the longitude and latitude a, the orientation b, the shape and dimension c and the height difference d, comparing the projection area and the projection path with the position of the heat dissipation index measuring device, and calculating the time span of the heat dissipation index measuring device covered by the cross arm projection.
3. The shadow compensation-based heat dissipation index measurement method of claim 2, wherein the longitude and latitude a are measured by a theodolite.
4. The shadow compensation-based heat dissipation index measurement method of claim 2, wherein the orientation b is measured by a compass.
5. The shadow compensation-based heat dissipation index measuring method of claim 2, wherein the shape dimension c is measured by a length detecting means and is used to build a three-dimensional model.
6. The shadow compensation-based heat dissipation index measuring method of claim 2, wherein the height difference d is measured by a length detecting means.
7. A shading compensation based heat dissipation index measurement system, comprising:
the time span calculation unit is used for calculating the time span of the heat dissipation index measurement device covered by the cross arm projection of the iron tower in a preset date;
the average deviation value calculation unit is used for calculating the average deviation value of the cross arm projection on the heat dissipation index measured value under the standard condition; the standard condition is that no cloud and rain shielding exists on sunny days; the heat dissipation index measuring device at least obtains three heat dissipation index measurement values as samples to obtain the average deviation value;
and the heat dissipation index measurement unit is used for replacing the current heat dissipation index measurement value with the previous heat dissipation index measurement value when the deviation value of the current heat dissipation index measurement value and the previous heat dissipation index measurement value is smaller than the average deviation value within the time span range.
8. A shading compensation based heat dissipation index measuring device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that the processor implements the steps of the shading compensation based heat dissipation index measuring method according to any one of claims 1-6 when executing the computer program.
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