CN108872059B - Composite insulator aging state assessment method and terminal equipment - Google Patents
Composite insulator aging state assessment method and terminal equipment Download PDFInfo
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- 239000012212 insulator Substances 0.000 title claims abstract description 276
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Abstract
The invention is suitable for the technical field of power grid safety, and provides a composite insulator aging state evaluation method and terminal equipment. The method comprises the following steps: respectively carrying out anti-aging performance test, macroscopic hydrophobic performance test, hardness change value test, brightness change value test and molecular group change value test on the composite insulator to be tested, determining the aging state value of the composite insulator to be tested according to the anti-aging performance test result, the macroscopic hydrophobic performance test result, the hardness change value test result, the brightness change value test result and the molecular group change value test result of the composite insulator to be tested, and determining the aging degree of the composite insulator to be tested according to the aging state value. After the scheme is adopted, the quantitative evaluation of the aging state of the composite insulator can be realized, the seriously aged insulator can be replaced in time, and the safe and reliable operation of a power grid is guaranteed.
Description
Technical Field
The invention belongs to the technical field of power grid safety, and particularly relates to a composite insulator aging state evaluation method and terminal equipment.
Background
The composite insulator is widely applied to an electric power system due to the excellent pollution flashover resistance, particularly, the ecological environment is seriously damaged in recent years, although the social environmental awareness is continuously improved, the current situation of environmental pollution is still severe, and the excellent performance of the composite insulator in a large-area pollution flashover event makes the composite insulator gradually become the first choice for the external insulation of the transmission line in China.
However, the umbrella sleeve material for the composite insulator is made of silicon rubber, and due to the combined action of external environmental factors in the operation process, the operation performance of the umbrella sleeve material can be continuously aged, and along with the continuous increase of the aging degree, faults such as loss of hydrophobic performance, breakage of a sheath, exposure of a core rod and the like can occur, even severe power accidents such as pollution flashover, insulator string falling and the like are caused in severe cases, and the safe, reliable and stable operation of a power grid is influenced.
Disclosure of Invention
In view of this, the embodiment of the invention provides a method for evaluating an aging state of a composite insulator and a terminal device, so as to solve the problems that in the prior art, an umbrella sleeve material for the composite insulator is made of a silicon rubber material, the running performance is continuously aged, and faults such as loss of hydrophobic performance, cracking of a sheath, exposure of a core rod and the like occur.
A first aspect of an embodiment of the present invention provides a method for evaluating an aging state of a composite insulator, including:
respectively carrying out anti-aging performance test, macroscopic hydrophobicity performance test, hardness change value test, brightness change value test and molecular group change value test on the composite insulator to be tested;
determining the aging state value of the composite insulator to be tested according to the anti-aging performance test result, the macro-hydrophobic performance test result, the hardness change value test result, the brightness change value test result and the molecular group change value test result of the composite insulator to be tested;
and determining the aging degree of the composite insulator to be tested according to the aging state value.
In addition, in a specific example, the testing the aging resistance of the composite insulator to be tested includes:
carrying out thermal oxidation accelerated aging treatment on the umbrella skirt of the composite insulator to be detected;
and determining the anti-aging performance test result of the composite insulator to be tested according to the umbrella skirt initial hardness value of the composite insulator to be tested and the hardness value after the thermal oxidation accelerated aging treatment.
In addition, in a specific example, the performing a macro hydrophobic performance test on the composite insulator to be tested includes:
carrying out static contact angle treatment on the umbrella skirt of the composite insulator to be detected;
and determining a macroscopic hydrophobic performance test result of the composite insulator to be tested according to at least one static contact angle after the composite insulator to be tested is subjected to static contact angle treatment.
In addition, in a specific example, the performing of the hardness change value test on the composite insulator to be tested includes:
cutting the umbrella skirt of the composite insulator to be tested;
and determining a hardness change value test result of the composite insulator to be tested according to the umbrella skirt surface hardness value of the composite insulator to be tested and the cut surface hardness value after cutting treatment.
In addition, in a specific example, the performing of the brightness variation value test on the composite insulator to be tested includes:
cutting the umbrella skirt of the composite insulator to be tested;
and determining a brightness change value result of the composite insulator to be tested according to the brightness value of the umbrella skirt surface color space of the composite insulator to be tested and the brightness value of the cut surface color space after cutting treatment.
In addition, in a specific example, the performing of the molecular group variation value test on the composite insulator to be tested includes:
performing infrared spectrum analysis processing on the surface of the umbrella skirt of the composite insulator to be detected;
cutting the umbrella skirt of the composite insulator to be detected, and performing infrared spectrum analysis on a cut surface;
and determining the molecular group change value result of the composite insulator to be detected according to the surface absorbance ratio after infrared spectrum analysis and the cut surface absorbance ratio after infrared spectrum analysis.
In addition, in a specific example, the determining the aging state value of the composite insulator to be tested according to the anti-aging performance test result, the macro hydrophobic performance test result, the hardness change value test result, the brightness change value test result, and the molecular group change value test result of the composite insulator to be tested includes:
according to the expression FState of aging＝a*△Hx℃+b*Aav-c*△Hshore-d*△L*-e*△IRw/n-f, determining the aging state value of the composite insulator to be tested, wherein a, b, c, d, e and f are respectively preset coefficient values, △ Hx℃For the result of the aging resistance test of the composite insulator to be tested, Aav△ H, a test result of macroscopic hydrophobicity of the composite insulator to be testedshore△ L, the hardness variation value test result of the composite insulator to be tested*△ IR test results of Brightness variation values of composite insulators to be testedw/nThe test result is the molecular group variation value test result of the composite insulator to be tested.
In addition, in a specific example, the determining the aging degree of the composite insulator to be tested according to the aging state value includes:
acquiring the maximum value of the aging state values;
and determining the aging degree corresponding to the maximum value as the aging degree of the composite insulator to be detected.
A second aspect of an embodiment of the present invention provides a composite insulator aging state evaluation apparatus, including:
the performance testing module is used for respectively carrying out anti-aging performance testing, macroscopic hydrophobicity performance testing, hardness change value testing, brightness change value testing and molecular group change value testing on the composite insulator to be tested;
the aging state value determining module is used for determining the aging state value of the composite insulator to be tested according to the aging resistance test result, the macroscopic hydrophobic property test result, the hardness change value test result, the brightness change value test result and the molecular group change value test result of the composite insulator to be tested;
and the aging degree determining module is used for determining the aging degree of the composite insulator to be tested according to the aging state value.
A third aspect of the embodiments of the present invention provides a terminal device for evaluating an aging state of a composite insulator, including: a memory, a processor and a computer program stored in the memory and executable on the processor, the processor when executing the computer program implementing the method according to the first aspect as described above.
Compared with the prior art, the embodiment of the invention has the following beneficial effects: after the scheme is adopted, the aging state value of the composite insulator can be determined by performing the anti-aging performance test, the macroscopic hydrophobic performance test, the hardness change value test, the brightness change value test and the molecular group change value test on the composite insulator, and then the aging state of the composite insulator is determined according to the aging state value, so that the quantitative evaluation of the aging state of the composite insulator can be realized, the seriously aged insulator can be replaced in time, and the safe and reliable operation of a power grid is ensured.
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In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a flowchart illustrating steps of a method for evaluating an aging state of a composite insulator according to an embodiment of the present invention;
fig. 2 is a flowchart illustrating steps of a method for evaluating an aging state of a composite insulator according to another embodiment of the present invention;
fig. 3 is a schematic structural diagram of a composite insulator aging state evaluation apparatus according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a composite insulator aging state evaluation terminal device according to an embodiment of the present invention.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
In order to explain the technical means of the present invention, the following description will be given by way of specific examples.
As shown in fig. 1, a flowchart of the steps of the method for evaluating the aging state of a composite insulator according to the embodiment of the present invention includes:
step S101, respectively carrying out anti-aging performance test, macroscopic hydrophobicity performance test, hardness change value test, brightness change value test and molecular group change value test on the composite insulator to be tested.
Specifically, the method and the device for measuring the aging resistance, the macroscopic hydrophobicity and the variation of the aging related performance of the composite insulator to be measured reduce the influence of single performance test result errors on the final judgment result, realize the quantitative evaluation of the aging state of the composite insulator, and provide scientific basis for the formulation of the alternate strategy of the composite insulator.
And S102, determining the aging state value of the composite insulator to be tested according to the anti-aging performance test result, the macro-hydrophobic performance test result, the hardness change value test result, the brightness change value test result and the molecular group change value test result of the composite insulator to be tested.
Specifically, the aging state of the composite insulator to be tested can be divided into three types, namely, unaged state, moderate aging state and severe aging state, and the possibility that the composite insulator is in a certain aging state is calculated by using possibility calculation formulas of a large number of composite insulator samples in three aging states of unaged state, moderate aging state and severe aging state. In addition, other schemes for differentiating the aging states are also within the scope of the present application, such as dividing the aging states into two, four, or more aging states.
And S103, determining the aging degree of the composite insulator to be tested according to the aging state value.
Specifically, the aging degree corresponding to the aging state value is determined according to a pre-stored aging degree determination rule of the composite insulator to be tested, wherein the aging state corresponding to the maximum value in the aging state values can be obtained by using a maximum value criterion, namely the aging state of the composite insulator to be tested. In addition, a threshold value can be determined, the difference value between the aging state value and the threshold value is calculated, and the aging state corresponding to the aging state value with the minimum absolute value of the difference value is the aging state of the composite insulator to be tested.
After the scheme is adopted, the aging state value of the composite insulator can be determined by performing the anti-aging performance test, the macroscopic hydrophobic performance test, the hardness change value test, the brightness change value test and the molecular group change value test on the composite insulator, and then the aging state of the composite insulator is determined according to the aging state value, so that the quantitative evaluation of the aging state of the composite insulator can be realized, the seriously aged insulator can be replaced in time, and the safe and reliable operation of a power grid is ensured.
In addition, as shown in fig. 2, in an embodiment, the performing the anti-aging performance test on the composite insulator to be tested includes:
step S201, carrying out thermal oxidation accelerated aging treatment on the umbrella skirt of the composite insulator to be tested.
And S202, determining an anti-aging performance test result of the composite insulator to be tested according to the umbrella skirt initial hardness value of the composite insulator to be tested and the hardness value after the thermal oxidation accelerated aging treatment.
Specifically, a part of umbrella skirt of the composite insulator to be tested is cut and tested for Shore hardness, and the record is HBefore accelerationCarrying out thermal oxidation accelerated aging treatment on the cut umbrella skirt sample of the composite insulator to be tested, testing the Shore hardness of the sample after accelerated aging, and recording the Shore hardness as HAfter accelerationThe hardness increase value before and after accelerated aging of the shed of the composite insulator is △ Hx＝HAfter acceleration-HBefore accelerationAnd obtaining the anti-aging performance test result of the composite insulator to be tested. Wherein, the artificial accelerated thermal-oxidative aging treatment is carried out in a muffle furnace for 12 hours at 290 ℃.
In addition, in an embodiment, the performing a macro hydrophobic performance test on the composite insulator to be tested includes:
and carrying out static contact angle treatment on the umbrella skirt of the composite insulator to be detected.
And determining a macroscopic hydrophobic performance test result of the composite insulator to be tested according to at least one static contact angle after the composite insulator to be tested is subjected to static contact angle treatment.
Specifically, the static contact angle of the umbrella skirt at least one position is measured by a static contact angle method, and the average SCA of the static contact angles is calculatedavNamely the macroscopic hydrophobic property of the composite insulator. The static contact angles of five positions of the umbrella skirt are measured, and the five positions are uniformly selected on the upper surface of the umbrella skirt by taking the central shaft of the umbrella skirt as a standard.
In addition, in an embodiment, the performing the hardness change value test on the composite insulator to be tested includes:
and cutting the umbrella skirt of the composite insulator to be tested. And determining a hardness change value test result of the composite insulator to be tested according to the umbrella skirt surface hardness value of the composite insulator to be tested and the cut surface hardness value after cutting treatment.
Specifically, cutting off the silicon rubber of the part of the composite insulator to be testedThe hardness of the upper surface of the rubber umbrella skirt is measured and recorded as HUpper surface ofCutting the umbrella skirt of the composite insulator to be measured, cutting the umbrella skirt along the longitudinal center of the cut umbrella skirt sample, measuring the hardness value of the cut surface, and recording the hardness value as HCenter layerThe difference between the hardness of the inner layer and the hardness of the outer layer is △ Hshore＝HUpper surface of-HCenter layerNamely the test result of the hardness change value of the composite insulator to be tested after aging.
In addition, in an embodiment, the performing the brightness variation test on the composite insulator to be tested includes:
and cutting the umbrella skirt of the composite insulator to be tested. And determining a brightness change value result of the composite insulator to be tested according to the brightness value of the umbrella skirt surface color space of the composite insulator to be tested and the brightness value of the cut surface color space after cutting treatment.
Specifically, a part of the silicon rubber umbrella skirt of the composite insulator to be measured is cut, and the brightness value of the surface color space of the composite insulator to be measured is measured, wherein the brightness value of the upper surface color space can be measured, namely the L value of the L ＊ a ＊ b color space is recorded as LUpper surface ofCutting along the longitudinal center of the umbrella skirt sample, measuring the L value of the cut surface, and recording as LCenter layerCalculating the difference △ L between the L values of the inner and outer layers*＝LUpper surface of-LCenter layerAnd the result is the brightness change value after the composite insulator to be tested is aged.
In addition, in an embodiment, the performing the molecular group variation value test on the composite insulator to be tested includes:
and carrying out infrared spectrum analysis processing on the surface of the umbrella skirt of the composite insulator to be detected. And cutting the umbrella skirt of the composite insulator to be detected, and performing infrared spectrum analysis processing on the cut surface. And determining the molecular group change value result of the composite insulator to be detected according to the surface absorbance ratio after infrared spectrum analysis and the cut surface absorbance ratio after infrared spectrum analysis.
Specifically, a part of silicon rubber umbrella skirt of the composite insulator to be tested is cut, and Fourier transform infrared light is carried out on the surface of the umbrella skirtSpectral analysis, wherein Si-O-Si clusters and Si- (CH) can be calculated for the upper surface of the shed3)2The ratio of absorbance of the resultant mixture was expressed as IRUpper surface ofCutting along the longitudinal center of the umbrella skirt sample, performing Fourier transform infrared spectroscopy analysis on the cut surface, and calculating Si-O-Si group and Si- (CH)3)2The ratio of absorbance of the resultant mixture was expressed as IRCenter layerCalculating the ratio of the two △ IRw/n＝IRUpper surface of/IRCenter layer(ii) a Namely the result of the molecular group change value after the composite insulator to be tested is aged.
In addition, in an embodiment, the determining the aging state value of the composite insulator to be tested according to the aging resistance test result, the macro hydrophobic property test result, the hardness change value test result, the brightness change value test result, and the molecular group change value test result of the composite insulator to be tested includes:
according to the expression FState of aging＝a*△Hx℃+b*Aav-c*△Hshore-d*△L*-e*△IRw/n-f, determining the aging state value of the composite insulator to be tested, wherein a, b, c, d, e and f are respectively preset coefficient values, △ Hx℃For the result of the aging resistance test of the composite insulator to be tested, Aav△ H, a test result of macroscopic hydrophobicity of the composite insulator to be testedshore△ L, the hardness variation value test result of the composite insulator to be tested*△ IR test results of Brightness variation values of composite insulators to be testedw/nThe test result is the molecular group variation value test result of the composite insulator to be tested.
Specifically, the aging state is divided into three types of non-aging, moderate aging and severe aging, and the state values corresponding to the aging degrees of the composite insulator, namely 'non-aging', 'moderate aging' and 'severe aging', are calculated according to a preset formula: fNot aged、FAged moderateAnd FSevere aging of the skin. Wherein, in one embodiment,
Fnot aged＝0.444△H290℃+4.858SCAav-2.911△Hshore-1.124△L*-1.421△IRw/n-311.268；
FAged moderate＝0.535△H290℃+4.373SCAav-2.258△Hshore-1.134△L*-1.127△IRw/n-254.870；
FSevere aging of the skin＝0.096△H290℃+5.126SCAav-3.796△Hshore-0.126△L*-1.631△IRw/n-346.936；
To FNot aged、FAged moderateAnd FSevere aging of the skinThe magnitude of the values are compared, if FNot agedThe maximum aging degree of the composite insulator to be tested is 'unaged', if F is the maximum aging degreeAged moderateThe maximum aging degree of the composite insulator to be tested is 'aging moderate', if F isSevere aging of the skinAnd if the aging degree of the composite insulator to be tested is the maximum, the aging degree of the composite insulator to be tested is 'severe aging'.
In addition, in a specific embodiment, the determining the aging degree of the composite insulator to be tested according to the aging state value includes:
and acquiring the maximum value in the aging state values. And determining the aging degree corresponding to the maximum value as the aging degree of the composite insulator to be detected.
In addition, in a specific example, three composite insulators to be tested are selected, the numbers of the composite insulators are 1#, 2#, and 3#, a part of umbrella skirt is cut from each insulator, thermal oxidation aging is carried out in a muffle furnace, the aging temperature is set to 290 ℃, the aging time is 12 hours, hardness values of umbrella skirt samples before and after thermal oxidation aging are tested, and hardness increasing values are calculated to correspond to delta H1#290 ℃ ═ 22.5, [ delta ] H2#290 ℃ ═ 16.6, and [ delta ] H3#290 ℃ ] 6.9.
Measuring the static contact angles of the three composite insulators at different positions for five times, and calculating the formula average value SCA1# av＝130.8°、SCA2# av＝119.4°、SCA3# av＝136.6°。
Selecting one umbrella skirt for each composite insulator to be tested, measuring the hardness of the inner layer and the outer layer of the umbrella skirt, and calculating the difference value of the hardness of the umbrella skirt △ H1# shore＝2.9、△H2# shore＝1.2、△H3# shore＝3.7。
Selecting one umbrella skirt for each composite insulator to be tested, measuring the L value of the inner and outer layers L a b color space by using a color difference meter, and calculating the difference value △ L1# ＊＝7.83、△L2# ＊＝-2.10、△L3# ＊＝13.48。
Selecting one umbrella skirt for each composite insulator to be tested, carrying out FTIR test on the inner and outer layers of the composite insulator to obtain the absorbances corresponding to the Si-O-Si group and the Si- (CH3)2 group, calculating the ratio of the absorbances corresponding to the two groups, and calculating the ratio of the inner layer to the outer layer of the composite insulator to be tested △ IR1# w/n＝-0.1081、△IR2# w/n＝0.3945、△IR3# w/n＝－0.6582。
According to FNot aged＝0.444△H290℃+4.858SCAav-2.911△Hshore-1.124△L*-1.421△IRw/n-311.268；
FAged moderate＝0.535△H290℃+4.373SCAav-2.258△Hshore-1.134△L*-1.127△IRw/n-254.870；
FSevere aging of the skin＝0.096△H290℃+5.126SCAav-3.796△Hshore-0.126△L*-1.631△IRw/n-346.936; calculating three aging state values of each composite insulator:
| sample numbering | FNot aged | FAged moderate | FSevere aging of the skin |
| 1# | 317.0591901 | 313.8503087 | 313.8861311 |
| 2# | 274.4542155 | 275.3743985 | 261.7679705 |
| 3# | 330.4114822 | 323.2741714 | 339.2678442 |
Comparing the three aging state values calculated by each insulator to be tested, 1# composite insulator FNot agedMaximum, indicating that it is not aged; 2# composite insulator FAged moderateThe maximum characteristic is that the aging degree is moderate, and the operation observation needs to be strengthened; 3# composite insulator FSevere aging of the skinAt the maximum, it is characterized by severe aging and requires immediate replacement.
As shown in fig. 3, a schematic structural diagram of an apparatus for evaluating an aging state of a composite insulator according to an embodiment of the present invention includes:
the performance testing module 301 is configured to perform an anti-aging performance test, a macro-hydrophobic performance test, a hardness change value test, a brightness change value test, and a molecular group change value test on the composite insulator to be tested, respectively.
An aging state value determining module 302, configured to determine an aging state value of the composite insulator to be tested according to an aging resistance test result, a macro hydrophobic property test result, a hardness change value test result, a brightness change value test result, and a molecular group change value test result of the composite insulator to be tested.
And the aging degree determining module 303 is configured to determine the aging degree of the composite insulator to be tested according to the aging state value.
After the scheme is adopted, the aging state value of the composite insulator can be determined by performing the anti-aging performance test, the macroscopic hydrophobic performance test, the hardness change value test, the brightness change value test and the molecular group change value test on the composite insulator, and then the aging state of the composite insulator is determined according to the aging state value, so that the quantitative evaluation of the aging state of the composite insulator can be realized, the seriously aged insulator can be replaced in time, and the safe and reliable operation of a power grid is ensured.
Furthermore, in a specific embodiment, the performance testing module 301 is further configured to:
and carrying out thermal oxidation accelerated aging treatment on the umbrella skirt of the composite insulator to be detected.
And determining the anti-aging performance test result of the composite insulator to be tested according to the umbrella skirt initial hardness value of the composite insulator to be tested and the hardness value after the thermal oxidation accelerated aging treatment.
In addition, in an embodiment, the performing a macro hydrophobic performance test on the composite insulator to be tested includes:
and carrying out static contact angle treatment on the umbrella skirt of the composite insulator to be detected.
And determining a macroscopic hydrophobic performance test result of the composite insulator to be tested according to at least one static contact angle after the composite insulator to be tested is subjected to static contact angle treatment.
Furthermore, in a specific embodiment, the performance testing module 301 is further configured to:
and cutting the umbrella skirt of the composite insulator to be tested.
And determining a hardness change value test result of the composite insulator to be tested according to the umbrella skirt surface hardness value of the composite insulator to be tested and the cut surface hardness value after cutting treatment.
Furthermore, in a specific embodiment, the performance testing module 301 is further configured to:
and cutting the umbrella skirt of the composite insulator to be tested.
And determining a brightness change value result of the composite insulator to be tested according to the brightness value of the umbrella skirt surface color space of the composite insulator to be tested and the brightness value of the cut surface color space after cutting treatment.
Furthermore, in a specific embodiment, the performance testing module 301 is further configured to:
and carrying out infrared spectrum analysis processing on the surface of the umbrella skirt of the composite insulator to be detected.
And cutting the umbrella skirt of the composite insulator to be detected, and performing infrared spectrum analysis processing on the cut surface.
And determining the molecular group change value result of the composite insulator to be detected according to the surface absorbance ratio after infrared spectrum analysis and the cut surface absorbance ratio after infrared spectrum analysis.
Furthermore, in a specific embodiment, the aging status value determination module 302 is further configured to:
according to the expression FState of aging＝a*△Hx℃+b*Aav-c*△Hshore-d*△L*-e*△IRw/n-f, determining the aging state value of the composite insulator to be tested, wherein a, b, c, d, e and f are respectively preset coefficient values, △ Hx℃For the result of the aging resistance test of the composite insulator to be tested, Aav△ H, a test result of macroscopic hydrophobicity of the composite insulator to be testedshore△ L, the hardness variation value test result of the composite insulator to be tested*△ IR test results of Brightness variation values of composite insulators to be testedw/nThe test result is the molecular group variation value test result of the composite insulator to be tested.
In addition, in a specific embodiment, the aging degree determining module 303 is further configured to:
and acquiring the maximum value in the aging state values.
And determining the aging degree corresponding to the maximum value as the aging degree of the composite insulator to be detected.
By adopting the scheme, the aging depth research result in the existing aging mechanism research of the composite insulator is fully utilized, the silicon rubber material of the umbrella skirt central layer represents a new silicon rubber product, the measurement error caused by the change of the formula and the process of the composite insulator is avoided, the aging resistance, the macroscopic hydrophobicity and the variation of the aged related performance of the composite insulator are measured by adopting the method, the possibility that the composite insulator is in a certain aging state is obtained by formula calculation, the influence of the error of a single performance test result on the final judgment result is reduced, the quantitative evaluation of the aging state of the composite insulator is realized, and a scientific basis is provided for the formulation of the composite insulator rotation strategy.
It should be understood that, the sequence numbers of the steps in the foregoing embodiments do not imply an execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.
Fig. 4 is a schematic diagram of a composite insulator aging state evaluation terminal device according to an embodiment of the present invention, where the terminal device 4 of the embodiment includes: a processor 40, a memory 41 and a computer program 42, such as a composite insulator state of aging evaluation program, stored in said memory 41 and executable on said processor 40. The processor 40, when executing the computer program 42, implements the steps in the above-described embodiments of the method for estimating the aging state of a composite insulator, such as the steps 101 to 103 shown in fig. 1. Alternatively, the processor 40, when executing the computer program 42, implements the functions of each module/unit in each device embodiment described above, for example, the functions of the modules 301 to 303 shown in fig. 3.
Illustratively, the computer program 42 may be partitioned into one or more modules/units that are stored in the memory 41 and executed by the processor 40 to implement the present invention. The one or more modules/units may be a series of computer program instruction segments capable of performing specific functions, which are used for describing the execution process of the computer program 42 in the composite insulator aging state evaluation terminal device 4. For example, the computer program 42 may be divided into a synchronization module, a summary module, an acquisition module, and a return module (a module in a virtual device), and each module has the following specific functions:
and respectively carrying out anti-aging performance test, macroscopic hydrophobicity performance test, hardness change value test, brightness change value test and molecular group change value test on the composite insulator to be tested.
And determining the aging state value of the composite insulator to be tested according to the anti-aging performance test result, the macro-hydrophobic performance test result, the hardness change value test result, the brightness change value test result and the molecular group change value test result of the composite insulator to be tested.
And determining the aging degree of the composite insulator to be tested according to the aging state value.
The anti-aging performance test of the composite insulator to be tested comprises the following steps:
and carrying out thermal oxidation accelerated aging treatment on the umbrella skirt of the composite insulator to be detected.
And determining the anti-aging performance test result of the composite insulator to be tested according to the umbrella skirt initial hardness value of the composite insulator to be tested and the hardness value after the thermal oxidation accelerated aging treatment.
The macroscopic hydrophobic performance test of the composite insulator to be tested comprises the following steps:
and carrying out static contact angle treatment on the umbrella skirt of the composite insulator to be detected.
And determining a macroscopic hydrophobic performance test result of the composite insulator to be tested according to at least one static contact angle after the composite insulator to be tested is subjected to static contact angle treatment.
The test of the hardness change value of the composite insulator to be tested comprises the following steps:
and cutting the umbrella skirt of the composite insulator to be tested.
And determining a hardness change value test result of the composite insulator to be tested according to the umbrella skirt surface hardness value of the composite insulator to be tested and the cut surface hardness value after cutting treatment.
The brightness change value test of the composite insulator to be tested comprises the following steps:
and cutting the umbrella skirt of the composite insulator to be tested.
And determining a brightness change value result of the composite insulator to be tested according to the brightness value of the umbrella skirt surface color space of the composite insulator to be tested and the brightness value of the cut surface color space after cutting treatment.
The step of testing the molecular group variation value of the composite insulator to be tested comprises the following steps:
and carrying out infrared spectrum analysis processing on the surface of the umbrella skirt of the composite insulator to be detected.
And cutting the umbrella skirt of the composite insulator to be detected, and performing infrared spectrum analysis processing on the cut surface.
And determining the molecular group change value result of the composite insulator to be detected according to the surface absorbance ratio after infrared spectrum analysis and the cut surface absorbance ratio after infrared spectrum analysis.
The determining the aging state value of the composite insulator to be tested according to the anti-aging performance test result, the macro-hydrophobic performance test result, the hardness change value test result, the brightness change value test result and the molecular group change value test result of the composite insulator to be tested comprises the following steps:
according to the expression FState of aging＝a*△Hx℃+b*Aav-c*△Hshore-d*△L*-e*△IRw/n-f, determining the aging state value of the composite insulator to be tested, wherein a, b, c, d, e and f are respectively preset coefficient values, △ Hx℃For the result of the aging resistance test of the composite insulator to be tested, Aav△ H, a test result of macroscopic hydrophobicity of the composite insulator to be testedshore△ L, the hardness variation value test result of the composite insulator to be tested*△ IR test results of Brightness variation values of composite insulators to be testedw/nThe test result is the molecular group variation value test result of the composite insulator to be tested.
The determining the aging degree of the composite insulator to be tested according to the aging state value comprises the following steps:
and acquiring the maximum value in the aging state values.
And determining the aging degree corresponding to the maximum value as the aging degree of the composite insulator to be detected.
The composite insulator aging state evaluation terminal device 4 may be a desktop computer, a notebook, a palm computer, a cloud server, or other computing devices. The composite insulator aging state evaluation terminal device can include, but is not limited to, a processor 40 and a memory 41. Those skilled in the art will appreciate that fig. 4 is merely an example of the composite insulator aging state evaluation terminal device 4, and does not constitute a limitation to the composite insulator aging state evaluation terminal device 4, and may include more or less components than those shown, or combine some components, or different components, for example, the composite insulator aging state evaluation terminal device may further include an input/output device, a network access device, a bus, and the like.
The Processor 40 may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory 41 may be an internal storage unit of the composite insulator aging state evaluation terminal device 4, for example, a hard disk or a memory of the composite insulator aging state evaluation terminal device 4. The memory 41 may also be an external storage device of the composite insulator aging state evaluation terminal device 4, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), and the like equipped on the composite insulator aging state evaluation terminal device 4. Further, the memory 41 may also include both an internal storage unit and an external storage device of the composite insulator aging state evaluation terminal device 4. The memory 41 is used for storing the computer program and other programs and data required by the composite insulator aging state evaluation terminal device. The memory 41 may also be used to temporarily store data that has been output or is to be output.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned function distribution may be performed by different functional units and modules according to needs, that is, the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-mentioned functions. Each functional unit and module in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one unit, and the integrated unit may be implemented in a form of hardware, or in a form of software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working processes of the units and modules in the system may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus/terminal device and method may be implemented in other ways. For example, the above-described embodiments of the apparatus/terminal device are merely illustrative, and for example, the division of the modules or units is only one logical division, and there may be other divisions when actually implemented, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed 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 can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated modules/units, if implemented in the form of software functional units and sold or used as separate products, may be stored in a computer readable storage medium. Based on such understanding, all or part of the flow of the method according to the embodiments of the present invention may also be implemented by a computer program, which may be stored in a computer-readable storage medium, and when the computer program is executed by a processor, the steps of the method embodiments may be implemented. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, usb disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution medium, and the like. It should be noted that the computer readable medium may contain other components which may be suitably increased or decreased as required by legislation and patent practice in jurisdictions, for example, in some jurisdictions, computer readable media which may not include electrical carrier signals and telecommunications signals in accordance with legislation and patent practice.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present 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 solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.
Claims (8)
1. A method for evaluating the aging state of a composite insulator is characterized by comprising the following steps:
respectively carrying out anti-aging performance test, macroscopic hydrophobicity performance test, hardness change value test, brightness change value test and molecular group change value test on the composite insulator to be tested;
△ H according to the anti-aging performance test result of the composite insulator to be testedx℃Macro hydrophobic property test result AavHardness Change value test result △ HshoreBrightness variation test result △ L*And molecular group variation value test result △ IRw/nAnd determining the aging state value of the composite insulator to be tested, comprising the following steps: according to the expression FState of aging＝a*△Hx℃+b*Aav-c*△Hshore-d*△L*-e*△IRw/nDetermining an aging state value of the composite insulator to be tested, wherein a, b, c, d, e and f are preset coefficient values respectively;
determining the aging degree of the composite insulator to be tested according to the aging state value, comprising the following steps: acquiring the maximum value of the aging state values; and determining the aging degree corresponding to the maximum value as the aging degree of the composite insulator to be detected.
2. The method for evaluating the aging state of the composite insulator according to claim 1, wherein the testing the aging resistance of the composite insulator to be tested comprises:
carrying out thermal oxidation accelerated aging treatment on the umbrella skirt of the composite insulator to be detected;
and determining the anti-aging performance test result of the composite insulator to be tested according to the umbrella skirt initial hardness value of the composite insulator to be tested and the hardness value after the thermal oxidation accelerated aging treatment.
3. The method for evaluating the aging state of the composite insulator according to claim 1, wherein the step of performing macroscopic hydrophobic performance test on the composite insulator to be tested comprises the steps of:
carrying out static contact angle treatment on the umbrella skirt of the composite insulator to be detected;
and determining a macroscopic hydrophobic performance test result of the composite insulator to be tested according to at least one static contact angle after the composite insulator to be tested is subjected to static contact angle treatment.
4. The method for evaluating the aging state of a composite insulator according to claim 1, wherein the testing the hardness change value of the composite insulator to be tested comprises:
cutting the umbrella skirt of the composite insulator to be tested;
and determining a hardness change value test result of the composite insulator to be tested according to the umbrella skirt surface hardness value of the composite insulator to be tested and the cut surface hardness value after cutting treatment.
5. The method for evaluating the aging state of a composite insulator according to claim 1, wherein the testing the brightness change value of the composite insulator to be tested comprises:
cutting the umbrella skirt of the composite insulator to be tested;
and determining a brightness change value result of the composite insulator to be tested according to the brightness value of the umbrella skirt surface color space of the composite insulator to be tested and the brightness value of the cut surface color space after cutting treatment.
6. The method for evaluating the aging state of a composite insulator according to claim 1, wherein the step of performing a molecular group variation value test on the composite insulator to be tested comprises:
performing infrared spectrum analysis processing on the surface of the umbrella skirt of the composite insulator to be detected;
cutting the umbrella skirt of the composite insulator to be detected, and performing infrared spectrum analysis on a cut surface;
and determining the molecular group change value result of the composite insulator to be detected according to the surface absorbance ratio after infrared spectrum analysis and the cut surface absorbance ratio after infrared spectrum analysis.
7. An aging state evaluation device for a composite insulator, comprising:
the performance testing module is used for respectively carrying out anti-aging performance testing, macroscopic hydrophobicity performance testing, hardness change value testing, brightness change value testing and molecular group change value testing on the composite insulator to be tested;
an aging state value determining module for determining △ H according to the aging resistance test result of the composite insulator to be testedx℃Macro hydrophobic property test result AavHardness Change value test result △ HshoreBrightness variation test result △ L*And molecular group variation value test result △ IRw/nAnd determining the aging state value of the composite insulator to be tested, comprising the following steps: according to the expression FState of aging＝a*△Hx℃+b*Aav-c*△Hshore-d*△L*-e*△IRw/nDetermining an aging state value of the composite insulator to be tested, wherein a, b, c, d, e and f are preset coefficient values respectively;
the aging degree determining module is used for determining the aging degree of the composite insulator to be tested according to the aging state value, and comprises: acquiring the maximum value of the aging state values; and determining the aging degree corresponding to the maximum value as the aging degree of the composite insulator to be detected.
8. A composite insulator ageing state assessment terminal device comprising a memory, a processor and a computer program stored in said memory and executable on said processor, characterized in that said processor implements the steps of the method according to any one of claims 1 to 6 when executing said computer program.
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| CN110426320B (en) * | 2019-07-24 | 2022-03-29 | 国网湖南省电力有限公司 | Method for judging aging degree of composite insulator |
| CN111089831B (en) * | 2020-01-03 | 2021-03-23 | 北京科技大学 | Corrosion resistance evaluation method of low-alloy structural steel |
| CN111965097A (en) * | 2020-09-29 | 2020-11-20 | 海南电网有限责任公司电力科学研究院 | Method for evaluating anti-aging performance of new composite insulator in tropical environment |
| CN112432969B (en) * | 2020-11-06 | 2022-04-08 | 电子科技大学 | Composite insulator aging degree improvement detection method based on modulation photothermal radiation technology |
| CN114371372A (en) * | 2021-12-08 | 2022-04-19 | 国网河北省电力有限公司电力科学研究院 | Method and device for evaluating aging state of silicone rubber composite insulator |
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