CN117451785A - Early warning method and system for thermal defect of suspension clamp - Google Patents
Early warning method and system for thermal defect of suspension clamp Download PDFInfo
- Publication number
- CN117451785A CN117451785A CN202311408408.8A CN202311408408A CN117451785A CN 117451785 A CN117451785 A CN 117451785A CN 202311408408 A CN202311408408 A CN 202311408408A CN 117451785 A CN117451785 A CN 117451785A
- Authority
- CN
- China
- Prior art keywords
- thermal
- value
- heat source
- temperature
- source power
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000725 suspension Substances 0.000 title claims abstract description 123
- 230000007547 defect Effects 0.000 title claims abstract description 92
- 238000000034 method Methods 0.000 title claims abstract description 27
- 230000000875 corresponding effect Effects 0.000 claims abstract description 92
- 239000000463 material Substances 0.000 claims abstract description 71
- 230000009471 action Effects 0.000 claims abstract description 53
- 238000012545 processing Methods 0.000 claims description 21
- 230000000977 initiatory effect Effects 0.000 claims description 20
- 238000004458 analytical method Methods 0.000 claims description 10
- 238000004364 calculation method Methods 0.000 claims description 9
- 230000009191 jumping Effects 0.000 claims description 8
- 230000002159 abnormal effect Effects 0.000 claims description 5
- 230000001276 controlling effect Effects 0.000 claims description 4
- 230000004044 response Effects 0.000 claims description 3
- 230000007613 environmental effect Effects 0.000 claims description 2
- 238000009529 body temperature measurement Methods 0.000 abstract description 8
- 238000003331 infrared imaging Methods 0.000 abstract description 7
- 238000007689 inspection Methods 0.000 abstract description 2
- 238000003825 pressing Methods 0.000 description 11
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
- 229910052782 aluminium Inorganic materials 0.000 description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 230000001052 transient effect Effects 0.000 description 3
- 208000025274 Lightning injury Diseases 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000003685 thermal hair damage Effects 0.000 description 1
- 238000001931 thermography Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/72—Investigating presence of flaws
-
- G—PHYSICS
- G01—MEASURING; TESTING
- 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
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
- G06F17/10—Complex mathematical operations
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G7/00—Overhead installations of electric lines or cables
- H02G7/05—Suspension arrangements or devices for electric cables or lines
- H02G7/053—Suspension clamps and clips for electric overhead lines not suspended to a supporting wire
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/30—Computing systems specially adapted for manufacturing
Abstract
The invention discloses a method and a system for early warning of thermal defects of a suspension clamp, which are characterized in that when an early warning request of the suspension clamp to be measured is received, working condition parameters corresponding to the suspension clamp to be measured are obtained, the corresponding thermal parameters are determined according to the working condition parameters and preset material lengths, the working condition parameters are input into a preset heat source power model, corresponding first heat source power and second heat source power are determined, the thermal parameters, the first heat source power, the second heat source power, the working condition parameters and the preset heat path model are determined, corresponding action temperature values are determined, a thermal defect early warning device is adopted to collect the wire clamp temperature rise values of the suspension clamp to be measured, and whether to control the alarm of the thermal defect early warning device to pop up is determined according to the comparison result of the wire clamp temperature rise values and the action temperature values. The technical problems that the current infrared temperature measurement and infrared imaging can only capture the current line temperature of the inspection line, a specific suspension clamp damaged point cannot be obtained and the reliability of power grid operation is reduced are solved.
Description
Technical Field
The invention relates to the technical field of thermal defect early warning, in particular to an early warning method and system for thermal defects of suspension clamps.
Background
In grid operation, overhead lines are subject to lightning strikes to initiate disconnection, which is one of the common accidents. In order to avoid the lightning stroke of the overhead transmission line, an overhead ground wire is additionally arranged on the overhead transmission line, current is leaked into the ground through a ground wire, suspension clamp and tower, a certain contact resistance exists between the ground wire and the wire clamp at the suspension clamp, the contact resistance is gradually increased under the influence of wind blowing, sun drying and rain along with the growth of the outdoor operation time, and therefore heat generated by the lightning flowing through the position is also increased, and the ground wire in the wire clamp is thermally damaged. Therefore, the method is particularly important for detection work of thermal damage and thermal defects at the suspension clamp.
The current power grid system mainly converts the radiation intensity of infrared reaction into a temperature value through infrared temperature measurement and infrared thermal imaging technology to judge the current line temperature distribution condition, but the infrared temperature measurement and infrared imaging can only capture the current line temperature of a patrol line, the instantaneous high temperature of a lightning current passing through the suspension clamp can not be captured, a specific suspension clamp damage point can not be obtained, and the reliability of power grid operation is reduced.
Disclosure of Invention
The invention provides a method and a system for early warning of thermal defects of a suspension clamp, which solve the technical problems that the current infrared temperature measurement and infrared imaging can only capture the current line temperature of a line, the instantaneous high temperature of a lightning current passing through the suspension clamp can not be captured, a specific suspension clamp damaged point can not be obtained, and the reliability of power grid operation is reduced.
The invention provides an early warning method for thermal defects of a suspension clamp, which relates to a suspension clamp to be tested, wherein the suspension clamp to be tested is connected with a thermal defect early warning device and comprises the following steps:
when an early warning request of a suspension clamp to be detected is received, working condition parameters corresponding to the suspension clamp to be detected are obtained;
determining corresponding thermal parameters according to the working condition parameters and the preset material length;
inputting the working condition parameters into a preset heat source power model, and determining corresponding first heat source power and second heat source power;
determining a corresponding action temperature value by the thermal parameter, the first heat source power, the second heat source power, the working condition parameter and a preset thermal path model;
collecting a wire clamp Wen Shengzhi of the suspension wire clamp to be tested by adopting the thermal defect early warning device;
And determining whether to control the alarm of the thermal defect early warning device to pop up or not according to the comparison result of the wire temperature rise value and the action temperature value.
Optionally, the working condition parameters include line quality, line specific heat capacity, thermal conductivity and line cross-sectional area, and the step of determining the corresponding thermal parameters according to the working condition parameters and the preset material length includes:
multiplying the cross section area of the circuit with the heat conductivity to generate a first multiplied value;
carrying out ratio processing on the preset material length and the first multiplication value to generate a thermal resistance value;
multiplying the circuit quality and the circuit specific heat capacity to generate a heat capacity value;
the thermal resistance value and the heat capacity value are determined as thermal parameters.
Optionally, the heat source power model is specifically:
wherein I (t) is lightning current,is a heat source->For the first heat source power, +.>For the second heat source power, R (t) is the maximum radius of the heat source, R is the radius of the heat source, R is the contact resistance in the wire clamp, t l For the duration of the lightning current, t isTime.
Optionally, the working condition parameters further include a ground wire material parameter, and the step of determining the corresponding action temperature value by using the thermal parameter, the first heat source power, the second heat source power, the working condition parameters and a preset thermal path model includes:
Determining a corresponding target thermal path model according to the ground wire material parameters and a preset thermal path model;
inputting the thermal parameters, the first heat source power and the second heat source power into the target thermal circuit model to generate corresponding first line temperature, second line temperature and initial action temperature values;
performing difference processing on the first line temperature and a preset environment temperature value to generate a first difference value;
performing difference processing on the second line temperature and the environmental temperature value to generate a second difference value;
and determining a corresponding action temperature value according to the first difference value, the second difference value, the initial action temperature value and a preset approximate threshold value.
Optionally, the step of determining the corresponding action temperature value according to the first difference value, the second difference value, the initial action temperature value and a preset approximate threshold value includes:
judging whether the first difference value is smaller than or equal to a preset approximate threshold value or not;
if the first difference value is larger than the approximate threshold value, adjusting the material length and jumping to the step of determining the corresponding thermal parameter according to the working condition parameter and the preset material length;
If the first difference value is smaller than or equal to the approximate threshold value, judging whether the second difference value is smaller than or equal to the approximate threshold value;
if the second difference value is larger than the approximate threshold value, adjusting the material length and jumping to the step of determining the corresponding thermal parameter according to the working condition parameter and the preset material length;
and if the second difference value is smaller than or equal to the approximate threshold value, determining the initial action temperature value as an action temperature value.
Optionally, the step of determining whether to control the alarm of the thermal defect early warning device to pop up according to the comparison result of the wire temperature rise value and the action temperature value includes:
judging whether the wire clamp temperature rise value is smaller than the action temperature value or not;
if the wire clamp temperature rise value is smaller than the action temperature value, judging that the suspension wire clamp to be tested is normal;
if the wire clamp temperature rise value is larger than or equal to the action temperature value, judging that the suspension wire clamp to be detected is abnormal, and controlling an alarm of the thermal defect early warning device to pop up.
Optionally, the step of determining the corresponding target thermal path model according to the ground wire material parameter and the preset thermal path model includes:
Inputting the ground wire material parameters into a preset material-characteristic temperature rule base, and associating corresponding characteristic temperature values;
and adjusting a preset thermal path model according to the characteristic temperature value to generate a target thermal path model.
The invention provides an early warning system for thermal defects of a suspension clamp, which relates to a suspension clamp to be tested, wherein the suspension clamp to be tested is connected with a thermal defect early warning device, and the early warning system comprises:
the response module is used for acquiring working condition parameters corresponding to the suspension clamp to be tested when receiving an early warning request of the suspension clamp to be tested;
the thermal parameter calculation module is used for determining corresponding thermal parameters according to the working condition parameters and the preset material length;
the heat source power acquisition module is used for inputting the working condition parameters into a preset heat source power model and determining corresponding first heat source power and second heat source power;
the action temperature selection module is used for determining the corresponding action temperature value from the thermal parameter, the first heat source power, the second heat source power, the working condition parameter and a preset thermal path model;
the acquisition module is used for acquiring the wire clamps Wen Shengzhi of the suspension wire clamps to be detected by adopting the thermal defect early warning device;
And the analysis module is used for determining whether to control the alarm of the thermal defect early warning device to pop up or not according to the comparison result of the wire temperature rise value and the action temperature value.
Optionally, the working condition parameters include line quality, line specific heat capacity, thermal conductivity and line cross-sectional area, and the thermal parameter calculation module includes:
the first multiplication submodule is used for carrying out multiplication processing on the line sectional area and the heat conductivity to generate a first multiplication;
the ratio submodule is used for carrying out ratio processing on the preset material length and the first multiplication value to generate a thermal resistance value;
the heat capacity acquisition submodule is used for multiplying the circuit quality and the circuit specific heat capacity to generate a heat capacity value;
and the thermal parameter acquisition submodule is used for determining the thermal resistance value and the thermal capacity value as thermal parameters.
Optionally, the working condition parameters further include a ground wire material parameter, and the action temperature selecting module includes:
the target thermal path model submodule is used for determining a corresponding target thermal path model according to the ground wire material parameters and a preset thermal path model;
the first analysis submodule is used for inputting the thermal parameters, the first heat source power and the second heat source power into the target heat path model to generate corresponding first line temperature, second line temperature and initial action temperature values;
The first difference value submodule is used for carrying out difference value processing on the first line temperature and a preset environment temperature value to generate a first difference value;
the second difference submodule is used for carrying out difference processing on the second line temperature and the environment temperature value to generate a second difference value;
and the action temperature sub-module is used for determining a corresponding action temperature value according to the first difference value, the second difference value, the initial action temperature value and a preset approximate threshold value.
From the above technical scheme, the invention has the following advantages:
when an early warning request of the suspension clamp to be detected is received, working condition parameters corresponding to the suspension clamp to be detected are obtained, corresponding thermal parameters are determined according to the working condition parameters and the preset material length, the working condition parameters are input into a preset heat source power model, corresponding first heat source power and second heat source power are determined, the corresponding action temperature value is determined according to the heat parameters, the first heat source power, the second heat source power, the working condition parameters and the preset heat path model, a wire clamp temperature rise value of the suspension clamp to be detected is collected by adopting a thermal defect early warning device, and whether an alarm of the thermal defect early warning device is controlled to pop up is determined according to a comparison result of the wire clamp temperature rise value and the action temperature value. The technical problems that the current infrared temperature measurement and infrared imaging can only capture the current line temperature of a line, the instantaneous high temperature of the lightning current passing through the suspension clamp can not be captured, the specific damaged point of the suspension clamp can not be obtained, and the running reliability of a power grid is reduced are solved. By applying the thermal defect early warning device to the suspension clamp and establishing the thermal path model to combine the attribute of the length of the material along with the temperature change, the action temperature value of the thermal defect early warning device is calculated, so that the thermal defect early warning device can early warn in time when the thermal defect occurs in the suspension clamp to be detected, and the running reliability of a power grid is improved.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that other drawings can be obtained from these drawings without inventive faculty for a person skilled in the art.
FIG. 1 is a flow chart of steps of a method for early warning of thermal defects of suspension clamps according to an embodiment of the present invention;
fig. 2 is a flow chart of steps of a method for early warning of thermal defects of suspension clamps according to a second embodiment of the present invention;
fig. 3 is a schematic structural diagram of a thermal defect warning device according to a second embodiment of the present invention;
fig. 4 is a schematic structural diagram of a thermal circuit model according to a second embodiment of the present invention;
fig. 5 is a schematic structural diagram of a temperature sensing core according to a second embodiment of the present invention;
fig. 6 is a schematic partial view of a thermal defect warning device according to a second embodiment of the present invention installed on a suspension clamp;
FIG. 7 is a block diagram of a suspension clamp thermal defect warning system according to a third embodiment of the present invention;
Wherein the reference numerals have the following meanings:
1. a pressing plate; 2. a housing; 3. a temperature sensing core; 4. lever locking; 5. bimetallic strips; 6. a metal sleeve is arranged; 7. a metal sleeve is arranged on the steel pipe; 8. a spring; 9. red warning device.
Detailed Description
The embodiment of the invention provides a method and a system for early warning of thermal defects of a suspension clamp, which are used for solving the technical problems that the current line temperature of a line can only be captured by the current infrared temperature measurement and infrared imaging, the instantaneous high temperature of a lightning current passing through the suspension clamp can not be captured, a specific suspension clamp damaged point can not be obtained, and the running reliability of a power grid is reduced.
In order to make the objects, features and advantages of the present invention more comprehensible, the technical solutions in the embodiments of the present invention are described in detail below with reference to the accompanying drawings, and it is apparent that the embodiments described below are only some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, fig. 1 is a flowchart illustrating a step of a method for early warning of thermal defects of suspension clamps according to an embodiment of the present invention.
The invention provides a method for early warning of thermal defects of a suspension clamp, which relates to a suspension clamp to be tested, wherein the suspension clamp to be tested is connected with a thermal defect early warning device and comprises the following steps:
and 101, when an early warning request of the suspension clamp to be detected is received, acquiring working condition parameters corresponding to the suspension clamp to be detected.
The early warning request of the suspension clamp to be tested refers to evaluation request information aiming at whether the suspension clamp to be tested has thermal defects or not.
The working condition parameters refer to the working condition parameters of the line where the suspension clamp to be tested is located. Including but not limited to: ambient temperature, thermal resistance of the pressing plate, lightning current, line quality, specific heat capacity of the line, thermal conductivity, sectional area of the line, contact resistance in the wire clamp, ground wire material parameters and the like.
In the embodiment of the invention, when an early warning request of the suspension clamp to be detected is received, the working condition parameters of the line where the suspension clamp to be detected is positioned are obtained.
Step 102, determining corresponding thermal parameters according to the working condition parameters and the preset material length.
The thermal parameters refer to the thermal resistance and the thermal capacitance of an equivalent circuit of the ground wire-suspension clamp to be measured.
In the embodiment of the invention, according to the line quality, the line specific heat capacity, the thermal conductivity, the line cross-section area and the preset material length in the working condition parameters, substituting the heat parameter function to generate the corresponding thermal resistance value and the heat capacity value.
It should be noted that the thermal parameter function is specifically:
C x ＝m x c；
wherein R is x Is a thermal resistance value, C x Is the heat capacity value, m x For the line quality, c is the specific heat capacity of the line, lambda is the heat conductivity, S x Is the cross-sectional area of the line l x Is the length of the material.
Step 103, inputting the working condition parameters into a preset heat source power model, and determining corresponding first heat source power and second heat source power.
In the embodiment of the invention, lightning current in working condition parameters and contact resistance in a wire clamp are input into a preset heat source power model to generate corresponding first heat source power and second heat source power.
It should be noted that the first heat source power refers to heat source power of joule heat of the equivalent circuit of the ground wire-suspension clamp to be measured, and the second heat source power refers to heat source power of arc heat of the equivalent circuit of the ground wire-suspension clamp to be measured.
Step 104, determining the corresponding action temperature value by using the thermal parameter, the first heat source power, the second heat source power, the working condition parameter and the preset thermal path model.
In the embodiment of the invention, the thermal parameter, the first heat source power, the second heat source power and the working condition parameter are input into a preset thermal path model, the line temperature (which means that the line at the two ends of the vertical line clamp comprises the first line temperature and the second line temperature) and the initial action temperature value are generated, whether the line temperature is similar to the environment temperature in the working condition parameter or not is judged, if the line temperature is dissimilar to the environment temperature, the material length is adjusted, the material length is substituted into the step 102 for recalculation, and if the line temperature is similar to the environment temperature, the initial action temperature value is determined to be the corresponding action temperature value.
And 105, collecting the wire clamp temperature rise value of the suspension wire clamp to be tested by adopting a thermal defect early warning device.
In the embodiment of the invention, the wire clamp temperature rise value of the suspension wire clamp to be measured is acquired through the thermal defect early warning device arranged on the suspension wire clamp.
And step 106, determining whether to control the alarm of the thermal defect early warning device to pop up according to the comparison result of the wire temperature rise value and the action temperature value.
In the embodiment of the invention, the action temperature value is set as the early warning value of the thermal defect early warning device, and whether the alarm of the thermal defect early warning device is controlled to pop up is determined according to the comparison result of the wire temperature rise value and the action temperature value.
It should be noted that, when determining the corresponding action temperature value according to the early warning request of the suspension clamp to be detected, and setting the action temperature value as the early warning value of the thermal defect early warning device, the suspension clamp to be detected is monitored online in real time, and when the wire clamp Wen Shengzhi exceeds the action temperature value, the warning device is controlled to pop up for early warning.
In the embodiment of the invention, when an early warning request of the suspension clamp to be detected is received, working condition parameters corresponding to the suspension clamp to be detected are obtained, corresponding thermal parameters are determined according to the working condition parameters and the preset material length, the working condition parameters are input into a preset heat source power model, corresponding first heat source power and second heat source power are determined, the thermal parameters, the first heat source power, the second heat source power, the working condition parameters and the preset heat path model are determined, corresponding action temperature values are determined, a thermal defect early warning device is adopted to collect the wire clamp temperature rise value of the suspension clamp to be detected, and whether the attention device of the thermal defect early warning device is controlled to pop up is determined according to the comparison result of the wire clamp temperature rise value and the action temperature value. The technical problems that the current infrared temperature measurement and infrared imaging can only capture the current line temperature of a line, the instantaneous high temperature of the lightning current passing through the suspension clamp can not be captured, the specific damaged point of the suspension clamp can not be obtained, and the running reliability of a power grid is reduced are solved. By applying the thermal defect early warning device to the suspension clamp and establishing the thermal path model to combine the attribute of the length of the material along with the temperature change, the action temperature value of the thermal defect early warning device is calculated, so that the thermal defect early warning device can early warn in time when the thermal defect occurs in the suspension clamp to be detected, and the running reliability of a power grid is improved.
Referring to fig. 2, fig. 2 is a flowchart illustrating a step of a method for early warning of thermal defects of suspension clamps according to a second embodiment of the present invention.
The invention provides a method for early warning of thermal defects of a suspension clamp, which relates to a suspension clamp to be tested, wherein the suspension clamp to be tested is connected with a thermal defect early warning device and comprises the following steps:
it is worth mentioning that the temperature sensing core 3 in the thermal defect early warning device is applied to transient temperature rise detection of the suspension clamp lightning stroke, and the temperature sensing point is arranged at the end part of the pressing plate 1, and the structure of the end part of the pressing plate 1 is modified to adapt to the structure of the temperature sensing core 3, so that the temperature sensing point is closer to a circuit, the temperature sensing area is larger, and the temperature sensing capability is more accurate and efficient.
It should be noted that, referring to fig. 3 and 5, the thermal defect early warning device is a temperature sensing core 3 capable of resetting and a detachable mechanical structure design device, and the thermal defect early warning device includes a pressing plate 1, a housing 2 and the temperature sensing core 3. The top of the pressing plate 1 is fixedly connected with the bottom of the shell 2, the temperature sensing core 3 is arranged inside the shell 2, and the temperature sensing core 3 consists of a bimetallic strip 5 core temperature sensing action element, a lever latch 4, a spring 8 indication action element and a metal jacket. The lower metal sleeve 6 is internally provided with a bimetallic strip 5, a lever latch 4, a spring 8 and a red warning indicator 9 in sequence from bottom to top, and then is connected with the upper metal sleeve by means of threads. The lower end of the lever is propped against the bimetallic strip 5, and the upper end is clamped with the alarm. The spring 8 is also positioned between the alarm and the bimetallic strip 5 and normally works in a compressed state. The upper metal tube is provided with a hole, so that the red warning indicator 9 can pop up after being operated. The pipe clamp is arranged at the lower end of the warning device, so that the warning device can be clamped after being ejected. When the temperature of the bottom portion rises to a preset temperature (thermal defect temperature). When the temperature of the bottom reaches the preset temperature, the bimetallic strip 5 is heated, and the two layers of metals are heated to have different expansion degrees, the bimetallic strip 5 bends to unlock the lever lock 4, the lever lock 4 is separated from the clamping groove, and the spring 8 releases the elasticity upwards to enable the red warning device to pop up, so that the warning effect is realized.
And 201, when an early warning request of the suspension clamp to be detected is received, working condition parameters corresponding to the suspension clamp to be detected are obtained.
In the embodiment of the invention, when an early warning request of the suspension clamp to be detected is received, the working condition parameters of the line where the suspension clamp to be detected is positioned are obtained.
Step 202, determining corresponding thermal parameters according to the working condition parameters and the preset material length.
Further, the operating condition parameters include line quality, line specific heat capacity, thermal conductivity, and line cross-sectional area, and step 202 includes the sub-steps of:
s11, multiplying the cross section area of the circuit and the heat conductivity to generate a first multiplication.
S12, carrying out ratio processing on the preset material length and the first multiplication value to generate a thermal resistance value.
In the embodiment of the invention, the thermal resistance value is related to the thermal conductivity and the line cross-section area in the working condition parameters and the preset material length, and the first ratio between the preset material length and the first multiplication value is calculated by calculating the first multiplication value between the line cross-section area and the thermal conductivity, so that the first ratio is determined as the thermal resistance value.
S13, multiplying the circuit quality and the circuit specific heat capacity to generate a heat capacity value.
S14, determining the thermal resistance value and the heat capacity value as thermal parameters.
In the embodiment of the invention, the heat capacity value is related to the line quality and the line specific heat capacity, and the thermal resistance value and the heat accommodation are determined as the thermal parameters by calculating a second multiplication value between the line quality and the line specific heat capacity and determining the second multiplication value as the heat capacity value.
It should be noted that the line quality may be calculated by calculating the volume of the material according to the parameters such as the cross-sectional area and the length of the material, and then multiplying the volume by the density to calculate the line quality.
Step 203, inputting the working condition parameters into a preset heat source power model, and determining the corresponding first heat source power and second heat source power.
It should be noted that the heat source power model specifically includes:
Q J (t)＝I(t) 2 R；
wherein I (t) is lightning current,is a heat source->For the first heat source power, +.>For the second heat source power, R (t) is the maximum radius of the heat source, R is the radius of the heat source, R is the contact resistance in the wire clamp, t l Is the lightning current duration, t is the time.
In the embodiment of the invention, the working condition parameters comprise lightning current and contact resistance in the wire clamp, the lightning current and the contact resistance in the wire clamp are input into a preset heat source power model, and corresponding first heat source power and second heat source power are generated.
It should be noted that, in the heat source power model, the heat source radius and the lightning current duration may be set to be 5mm for convenience of calculation, and the lightning current duration is set to be not more than 1s.
Step 204, determining the corresponding action temperature value by using the thermal parameter, the first heat source power, the second heat source power, the working condition parameter and the preset thermal path model.
Further, step 204 comprises the sub-steps of:
s21, determining a corresponding target thermal path model according to the ground wire material parameters and a preset thermal path model;
further, S21 includes the sub-steps of:
s211, inputting the ground wire material parameters into a preset material-characteristic temperature rule base, and associating corresponding characteristic temperature values.
In the embodiment of the invention, the ground wire material parameters are input into a preset material-characteristic temperature rule base to be matched with corresponding characteristic temperature values.
In another embodiment, when the broken strand of the ground wire under the action of lightning current is considered, the influence caused by melting of the ground wire and the change of the mechanical property of the ground wire due to the temperature rise is considered at the same time. As the temperature of the ground wire increases, its tensile strength R gradually decreases. When the strand temperature was raised to 800 ℃, its tensile strength decayed to 2.3% of 20 ℃ and became smooth after 800 ℃. Thus, the strand temperature can be raised to 800 ℃ as the characteristic temperature value.
S212, adjusting a preset thermal path model according to the characteristic temperature value to generate a target thermal path model.
In the embodiment of the present invention, referring to fig. 4, the characteristic temperature T of a single broken strand in a wire strand in a preset thermal circuit model is adjusted according to the characteristic temperature value 0 And generating a target hot path model.
S22, inputting the thermal parameters, the first heat source power and the second heat source power into a target heat path model, and generating corresponding first line temperature, second line temperature and initial action temperature values.
In the embodiment of the present invention, please refer to fig. 4, in which the thermal resistance value, the heat capacity value, the first heat source power, and the second heat source power are input into the target heat circuit model, the target heat circuit model is manually solved or the target heat circuit model is input into the circuit simulation software such as simulink, and the corresponding first circuit temperature, second circuit temperature, and initial operation temperature values are calculated.
S23, performing difference processing on the first line temperature and a preset environment temperature value to generate a first difference value.
In an embodiment of the present invention, a first difference between a first line temperature and a preset ambient temperature value is calculated.
S24, performing difference processing on the second line temperature and the ambient temperature value to generate a second difference value.
In an embodiment of the invention, a second difference between the second line temperature and the ambient temperature value is calculated.
S25, determining a corresponding action temperature value according to the first difference value, the second difference value, the initial action temperature value and a preset approximate threshold value.
Further, S25 includes the sub-steps of:
s251, judging whether the first difference value is smaller than or equal to a preset approximate threshold value;
and S252, if the first difference value is larger than the approximate threshold value, adjusting the material length and jumping to a step of determining a corresponding thermal parameter according to the working condition parameter and the preset material length.
In the embodiment of the invention, whether the first difference value is smaller than or equal to the preset approximate threshold value is judged, when the first difference value is larger than the approximate threshold value, the fact that the first line temperature calculated by the thermal circuit model is larger than the ambient temperature is indicated, the material length is required to be readjusted, the step of determining the corresponding thermal parameters according to the working condition parameters and the preset material length is required, and the initial action temperature value is recalculated.
S253, if the first difference value is smaller than or equal to the approximate threshold value, judging whether the second difference value is smaller than or equal to the approximate threshold value.
And S254, if the second difference value is larger than the approximate threshold value, adjusting the material length and jumping to a step of determining a corresponding thermal parameter according to the working condition parameter and the preset material length.
In the embodiment of the invention, when the first difference value is smaller than or equal to the approximate threshold value, whether the second difference value is smaller than or equal to the approximate threshold value is judged. When the second difference value is larger than the approximate threshold value, the fact that the second line temperature calculated by the thermal circuit model is larger than the ambient temperature is indicated, the material length is required to be readjusted, the step of determining the corresponding thermal parameters according to the working condition parameters and the preset material length is needed to be skipped, and the initial action temperature value is recalculated.
And S255, if the second difference value is smaller than or equal to the approximate threshold value, determining the initial operation temperature value as the operation temperature value.
In the embodiment of the invention, when the second difference value is smaller than or equal to the approximate threshold value, the first line temperature, the second line temperature and the environment temperature are similar, and the initial action temperature value is determined as the action temperature value.
It should be noted that, referring to fig. 6, for the whole ground wire-clip system, heat is mainly generated at the first contact point of the ground wire and the clip under the platen 1, i.e. the contact point between the ground wire and the aluminum tape. On the premise of local area and short-time temperature rise, solar radiation can be ignored, and the joule heat and the arc heat at the position are considered to be the only heat sources of the system. When heat is generated, the heat is mainly transferred and diffused outwards along the radial direction of the ground wire. A portion of the heat diffuses into the air near the contact point. A part of heat flows to the strand body from the contact point, so that the strand is locally damaged under the combined action of heat and tension, and is directly broken even under severe conditions. Part of heat flows to the aluminum wrapping tape from the contact point, flows to the end part of the pressing plate 1, and then flows into the thermal bimetallic strip 5 at the bottom of the temperature sensing core 3, so that the temperature sensing core 3 reaches the designated temperature to give an alarm. Because the area range is small, the heating time is short, the heating position is tightly attached to the thin aluminum wrapping tape, the influence of surrounding air convection can be ignored, the influence of the aluminum wrapping tape on heat transfer is ignored, the heat capacity of each layer of material except the wire strand is ignored, and only the thermal resistance of the material is considered. The area where the first contact point is located is divided into three parts, namely the outer side of the pressing plate 1, the heating section and the inner side of the pressing plate 1. Wherein the heat source is present only in the section where the first contact point is located. Furthermore, according to the above assumptions and simplifications, and the simulation calculation results provided in the existing papers, it can be considered that the heat source only affects the local temperature of the single strand, and in the whole transient temperature rise process, except for the strand and the aluminum tape above the strand, the pressing plate 1, the thermal parameters of other strands and the aluminum tape at the bottom of the ground wire, the wire clamp hull and other parts have negligible effect on the thermal calculation, and the temperature is considered to be unchanged in the transient process and equal to the ambient temperature.
And 205, acquiring a wire clamp temperature rise value of the suspension wire clamp to be tested by adopting a thermal defect early warning device.
In the embodiment of the invention, the action temperature value is set as the early warning value of the thermal defect early warning device, and the thermal defect early warning device is adopted to collect the wire clamp temperature rise value of the suspension wire clamp to be detected.
Step 206, judging whether the wire temperature rise value is smaller than the action temperature value.
In the embodiment of the invention, whether the wire clamp temperature rise value acquired by the thermal defect early warning device is smaller than the action temperature value is judged.
And 207, if the wire clamp temperature rise value is smaller than the action temperature value, judging that the suspension clamp to be tested is normal.
In the embodiment of the invention, when the wire clamp temperature rise value is smaller than the action temperature value, the suspension wire clamp to be tested is judged to be normal, and the alarm of the thermal defect early warning device does not act.
And step 208, if the wire clamp temperature rise value is greater than or equal to the action temperature value, judging that the suspension wire clamp to be tested is abnormal, and controlling the alarm of the thermal defect early warning device to pop up.
In the embodiment of the invention, when the wire clamp temperature rise value is greater than or equal to the action temperature value, the suspension wire clamp to be detected is judged to be abnormal, and the alarm of the thermal defect early warning device is controlled to pop up.
It should be noted that, referring to fig. 3 and 5, the pressing plate 1 is fixedly installed on the suspension clamp to be tested, lightning current causes the temperature of the ground wire clamp to rise during lightning strike, the red alarm 9 of the temperature sensing core 3 pops up when reaching the action temperature value, and the inspection personnel manually inspect the defect when finding the red alarm 9, and the temperature sensing core 3 on the thermal defect early warning device.
In the embodiment of the invention, when an early warning request of the suspension clamp to be detected is received, working condition parameters corresponding to the suspension clamp to be detected are obtained, corresponding thermal parameters are determined according to the working condition parameters and the preset material length, the working condition parameters are input into a preset heat source power model, corresponding first heat source power and second heat source power are determined, the thermal parameters, the first heat source power, the second heat source power, the working condition parameters and the preset heat path model are determined, corresponding action temperature values are determined, a thermal defect early warning device is adopted to collect the wire clamp temperature rise value of the suspension clamp to be detected, and whether the attention device of the thermal defect early warning device is controlled to pop up is determined according to the comparison result of the wire clamp temperature rise value and the action temperature value. The technical problems that the current infrared temperature measurement and infrared imaging can only capture the current line temperature of a line, the instantaneous high temperature of the lightning current passing through the suspension clamp can not be captured, the specific damaged point of the suspension clamp can not be obtained, and the running reliability of a power grid is reduced are solved. By applying the thermal defect early warning device to the suspension clamp and establishing the thermal path model to combine the attribute of the length of the material along with the temperature change, the action temperature value of the thermal defect early warning device is calculated, so that the thermal defect early warning device can early warn in time when the thermal defect occurs in the suspension clamp to be detected, and the running reliability of a power grid is improved.
Referring to fig. 7, fig. 7 is a block diagram illustrating a thermal defect warning system for suspension clamps according to a third embodiment of the present invention.
The invention provides an early warning system for thermal defects of a suspension clamp, which relates to a suspension clamp to be tested, wherein the suspension clamp to be tested is connected with a thermal defect early warning device, and the early warning system comprises the following components:
the response module 301 is configured to obtain a working condition parameter corresponding to the suspension clamp to be tested when receiving an early warning request of the suspension clamp to be tested;
the thermal parameter calculation module 302 is configured to determine a corresponding thermal parameter according to the working condition parameter and a preset material length;
the heat source power obtaining module 303 is configured to input the working condition parameter into a preset heat source power model, and determine a corresponding first heat source power and second heat source power;
the action temperature selection module 304 is configured to determine a corresponding action temperature value by using the thermal parameter, the first heat source power, the second heat source power, the working condition parameter and a preset thermal path model;
the acquisition module 305 is used for acquiring a wire clamp Wen Shengzhi of the suspension wire clamp to be detected by adopting a thermal defect early warning device;
and the analysis module 306 is used for determining whether to control the alarm of the thermal defect early warning device to pop up according to the comparison result of the wire temperature rise value and the action temperature value.
Further, the operating condition parameters include line quality, line specific heat capacity, thermal conductivity, and line cross-sectional area, and the thermal parameter calculation module 302 includes:
the first multiplication submodule is used for carrying out multiplication processing on the sectional area of the circuit and the heat conductivity to generate a first multiplication;
the ratio submodule is used for carrying out ratio processing on the preset material length and the first multiplication value to generate a thermal resistance value;
the heat capacity acquisition submodule is used for multiplying the circuit quality and the circuit specific heat capacity to generate a heat capacity value;
and the thermal parameter acquisition sub-module is used for determining the thermal resistance value and the thermal capacitance value as thermal parameters.
Further, the operating condition parameters further include a ground wire material parameter, and the action temperature selecting module 304 includes:
the target thermal path model submodule is used for determining a corresponding target thermal path model according to the ground wire material parameters and a preset thermal path model;
the first analysis submodule is used for inputting the thermal parameters, the first heat source power and the second heat source power into the target heat path model and generating corresponding first line temperature, second line temperature and initial action temperature values;
the first difference value submodule is used for carrying out difference value processing on the first line temperature and a preset environment temperature value to generate a first difference value;
The second difference submodule is used for carrying out difference processing on the second line temperature and the ambient temperature value to generate a second difference;
and the action temperature sub-module is used for determining a corresponding action temperature value according to the first difference value, the second difference value, the initial action temperature value and a preset approximate threshold value.
Further, the heat source power model is specifically:
wherein I (t) is lightning current, Q D (r, t) is a heat source, Q J (t) is the first heat source power,for the second heat source power, R (t) is the maximum radius of the heat source, R is the radius of the heat source, R is the contact resistance in the wire clamp, t l Is the lightning current duration, t is the time.
Further, the analysis module 306 includes:
the first analysis submodule is used for judging whether the wire clamp temperature rise value is smaller than the action temperature value or not;
the first control submodule is used for judging that the suspension clamp to be tested is normal if the wire clamp temperature rise value is smaller than the action temperature value;
and the second control submodule is used for judging that the suspension clamp to be tested is abnormal if the wire clamp temperature rise value is greater than or equal to the action temperature value and controlling the alarm of the thermal defect early warning device to pop up.
Further, the action temperature submodule includes:
the first analysis unit is used for judging whether the first difference value is smaller than or equal to a preset approximate threshold value;
If the first difference value is larger than the approximate threshold value, adjusting the material length and jumping to a step of determining a corresponding thermal parameter according to the working condition parameter and the preset material length;
the second analysis unit is used for judging whether the second difference value is smaller than or equal to the approximate threshold value or not if the first difference value is smaller than or equal to the approximate threshold value;
if the second difference value is larger than the approximate threshold value, adjusting the material length and jumping to a step of determining a corresponding thermal parameter according to the working condition parameter and the preset material length;
if the second difference is less than or equal to the approximate threshold, the initial operating temperature value is determined to be the operating temperature value.
Further, the target hot-path model submodule includes:
the characteristic temperature selecting unit is used for inputting the ground wire material parameters into a preset material-characteristic temperature rule base and associating corresponding characteristic temperature values;
and the target thermal path model unit is used for adjusting a preset thermal path model according to the characteristic temperature value to generate a target thermal path model.
It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, which are not repeated herein.
In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods may be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
The above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. The utility model provides a warning method of suspension clamp thermal defect, which is characterized in that it relates to suspension clamp to be measured, the suspension clamp to be measured is connected with thermal defect warning device, including:
when an early warning request of a suspension clamp to be detected is received, working condition parameters corresponding to the suspension clamp to be detected are obtained;
determining corresponding thermal parameters according to the working condition parameters and the preset material length;
inputting the working condition parameters into a preset heat source power model, and determining corresponding first heat source power and second heat source power;
determining a corresponding action temperature value by the thermal parameter, the first heat source power, the second heat source power, the working condition parameter and a preset thermal path model;
collecting a wire clamp Wen Shengzhi of the suspension wire clamp to be tested by adopting the thermal defect early warning device;
and determining whether to control the alarm of the thermal defect early warning device to pop up or not according to the comparison result of the wire temperature rise value and the action temperature value.
2. The method for early warning of a suspension clamp thermal defect according to claim 1, wherein the working condition parameters include line quality, specific heat capacity, thermal conductivity and line sectional area, and the step of determining the corresponding thermal parameters according to the working condition parameters and the preset material length includes:
Multiplying the cross section area of the circuit with the heat conductivity to generate a first multiplied value;
carrying out ratio processing on the preset material length and the first multiplication value to generate a thermal resistance value;
multiplying the circuit quality and the circuit specific heat capacity to generate a heat capacity value;
the thermal resistance value and the heat capacity value are determined as thermal parameters.
3. The method for early warning of a suspension clamp thermal defect according to claim 1, wherein the heat source power model is specifically:
Q J (t)＝I(t) 2 R；
wherein I (t) is lightning current,is a heat source->For the first heat source power, +.>For the second heat source power, R (t) is the maximum radius of the heat source, R is the radius of the heat source, R is the contact resistance in the wire clamp, t l Is the lightning current duration, t is the time.
4. The method for early warning of a thermal defect of a suspension clamp according to claim 1, wherein the working condition parameters further include a ground wire material parameter, and the step of determining the corresponding action temperature value by using the thermal parameter, the first heat source power, the second heat source power, the working condition parameter and a preset heat path model includes:
determining a corresponding target thermal path model according to the ground wire material parameters and a preset thermal path model;
Inputting the thermal parameters, the first heat source power and the second heat source power into the target thermal circuit model to generate corresponding first line temperature, second line temperature and initial action temperature values;
performing difference processing on the first line temperature and a preset environment temperature value to generate a first difference value;
performing difference processing on the second line temperature and the environmental temperature value to generate a second difference value;
and determining a corresponding action temperature value according to the first difference value, the second difference value, the initial action temperature value and a preset approximate threshold value.
5. The method of claim 4, wherein determining the corresponding operating temperature value according to the first difference, the second difference, the initial operating temperature value, and a predetermined approximate threshold value comprises:
judging whether the first difference value is smaller than or equal to a preset approximate threshold value or not;
if the first difference value is larger than the approximate threshold value, adjusting the material length and jumping to the step of determining the corresponding thermal parameter according to the working condition parameter and the preset material length;
if the first difference value is smaller than or equal to the approximate threshold value, judging whether the second difference value is smaller than or equal to the approximate threshold value;
If the second difference value is larger than the approximate threshold value, adjusting the material length and jumping to the step of determining the corresponding thermal parameter according to the working condition parameter and the preset material length;
and if the second difference value is smaller than or equal to the approximate threshold value, determining the initial action temperature value as an action temperature value.
6. The method for warning of a thermal defect of a suspension clamp according to claim 1, wherein the step of determining whether to control ejection of a warning device of the thermal defect warning device according to a comparison result of the clamp temperature rise value and the action temperature value comprises:
judging whether the wire clamp temperature rise value is smaller than the action temperature value or not;
if the wire clamp temperature rise value is smaller than the action temperature value, judging that the suspension wire clamp to be tested is normal;
if the wire clamp temperature rise value is larger than or equal to the action temperature value, judging that the suspension wire clamp to be detected is abnormal, and controlling an alarm of the thermal defect early warning device to pop up.
7. The method for pre-warning the thermal defect of the suspension clamp according to claim 4, wherein the step of determining the corresponding target thermal path model according to the ground wire material parameter and the preset thermal path model comprises the following steps:
Inputting the ground wire material parameters into a preset material-characteristic temperature rule base, and associating corresponding characteristic temperature values;
and adjusting a preset thermal path model according to the characteristic temperature value to generate a target thermal path model.
8. An early warning system of suspension clamp thermal defect, characterized in that relates to the suspension clamp that awaits measuring, the suspension clamp that awaits measuring is connected with thermal defect early warning device, includes:
the response module is used for acquiring working condition parameters corresponding to the suspension clamp to be tested when receiving an early warning request of the suspension clamp to be tested;
the thermal parameter calculation module is used for determining corresponding thermal parameters according to the working condition parameters and the preset material length;
the heat source power acquisition module is used for inputting the working condition parameters into a preset heat source power model and determining corresponding first heat source power and second heat source power;
the action temperature selection module is used for determining the corresponding action temperature value from the thermal parameter, the first heat source power, the second heat source power, the working condition parameter and a preset thermal path model;
the acquisition module is used for acquiring the wire clamps Wen Shengzhi of the suspension wire clamps to be detected by adopting the thermal defect early warning device;
And the analysis module is used for determining whether to control the alarm of the thermal defect early warning device to pop up or not according to the comparison result of the wire temperature rise value and the action temperature value.
9. The early warning system of suspension clamp thermal defect of claim 8, wherein the operating condition parameters include line quality, line specific heat capacity, thermal conductivity and line cross-sectional area, the thermal parameter calculation module comprises:
the first multiplication submodule is used for carrying out multiplication processing on the line sectional area and the heat conductivity to generate a first multiplication;
the ratio submodule is used for carrying out ratio processing on the preset material length and the first multiplication value to generate a thermal resistance value;
the heat capacity acquisition submodule is used for multiplying the circuit quality and the circuit specific heat capacity to generate a heat capacity value;
and the thermal parameter acquisition submodule is used for determining the thermal resistance value and the thermal capacity value as thermal parameters.
10. The suspension clamp thermal defect warning system of claim 8, wherein the operating condition parameters further comprise ground wire material parameters, the action temperature selection module comprising:
the target thermal path model submodule is used for determining a corresponding target thermal path model according to the ground wire material parameters and a preset thermal path model;
The first analysis submodule is used for inputting the thermal parameters, the first heat source power and the second heat source power into the target heat path model to generate corresponding first line temperature, second line temperature and initial action temperature values;
the first difference value submodule is used for carrying out difference value processing on the first line temperature and a preset environment temperature value to generate a first difference value;
the second difference submodule is used for carrying out difference processing on the second line temperature and the environment temperature value to generate a second difference value;
and the action temperature sub-module is used for determining a corresponding action temperature value according to the first difference value, the second difference value, the initial action temperature value and a preset approximate threshold value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311408408.8A CN117451785A (en) | 2023-10-26 | 2023-10-26 | Early warning method and system for thermal defect of suspension clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311408408.8A CN117451785A (en) | 2023-10-26 | 2023-10-26 | Early warning method and system for thermal defect of suspension clamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117451785A true CN117451785A (en) | 2024-01-26 |
Family
ID=89581262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311408408.8A Pending CN117451785A (en) | 2023-10-26 | 2023-10-26 | Early warning method and system for thermal defect of suspension clamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117451785A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117824876A (en) * | 2024-03-05 | 2024-04-05 | 浙江正泰电器股份有限公司 | Terminal over-temperature early warning method and device, meter box equipment and storage medium |
-
2023
- 2023-10-26 CN CN202311408408.8A patent/CN117451785A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117824876A (en) * | 2024-03-05 | 2024-04-05 | 浙江正泰电器股份有限公司 | Terminal over-temperature early warning method and device, meter box equipment and storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN117451785A (en) | Early warning method and system for thermal defect of suspension clamp | |
| CN109781268A (en) | Keypoint part temperature monitoring system in a kind of switchgear based on the infrared thermovision technology of low cost | |
| CN104198068A (en) | Temperature monitoring device and temperature monitoring method for winding of oil immersed transformer | |
| CN107290062A (en) | A kind of power transmission and transformation equipment state analysis method based on Infrared Thermogram | |
| CN111307480B (en) | Embedded heat pipe-based heat transfer management system, method and storage medium | |
| CN116086650B (en) | Distributed cable bridge temperature monitoring method and system based on Internet of things | |
| CN111562450B (en) | System and method for monitoring service life of reactor | |
| CN116205058A (en) | Bus duct insulation performance evaluation method and system | |
| CN111832186A (en) | Weld performance prediction method | |
| CN116203060A (en) | Effectiveness test system and method for transformer winding material detection device | |
| CN114942075A (en) | Power equipment fault detection and analysis method | |
| CN210863483U (en) | Detection device for evaluating uniform corrosion of metal material | |
| CN113269941A (en) | Electrical fire alarm device based on multi-information fusion judgment and control method | |
| CN117405240B (en) | Electrical equipment metal surface temperature difference detection method and system | |
| CN108827483B (en) | Bare conductor thermal state early warning method and system | |
| CN111159650A (en) | Artificial intelligence electric line aging degree detection method and system | |
| CN106814070B (en) | A kind of aluminium hydraulic pressed connecting pipe defect dipoles method and system based on infrared measurement of temperature | |
| CN115308537B (en) | Overhead ground wire lightning stroke positioning and strand damage monitoring method and system | |
| CN110763933A (en) | Heating defect grading device | |
| CN117030048B (en) | Temperature detection and overheat early warning system suitable for power equipment | |
| CN116990321B (en) | Image recognition-based sheath flat cable product quality analysis system | |
| CN113790861B (en) | Intelligent detection method for cooling water leakage of hydropower station | |
| CN211180033U (en) | Heating defect grading device | |
| CN117347422A (en) | Method, system and device for detecting thermal defects of plate-type bolt connecting piece | |
| US20220102049A1 (en) | Electric transformer assembly, method for determining a thermal state of an electric transformer, and determination device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |