CN109752685A - A kind of appraisal procedure, the system of distribution mutual inductor insulation performance - Google Patents
A kind of appraisal procedure, the system of distribution mutual inductor insulation performance Download PDFInfo
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- CN109752685A CN109752685A CN201910185191.6A CN201910185191A CN109752685A CN 109752685 A CN109752685 A CN 109752685A CN 201910185191 A CN201910185191 A CN 201910185191A CN 109752685 A CN109752685 A CN 109752685A
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- 238000000034 method Methods 0.000 title claims abstract description 36
- 238000009413 insulation Methods 0.000 title claims abstract description 27
- 239000003822 epoxy resin Substances 0.000 claims abstract description 85
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 85
- 230000032683 aging Effects 0.000 claims abstract description 79
- 238000003483 aging Methods 0.000 claims abstract description 67
- 239000004593 Epoxy Substances 0.000 claims abstract description 45
- 238000013528 artificial neural network Methods 0.000 claims abstract description 25
- 238000012549 training Methods 0.000 claims abstract description 14
- 238000004590 computer program Methods 0.000 claims description 10
- 239000000126 substance Substances 0.000 claims description 8
- 230000005611 electricity Effects 0.000 claims description 5
- 230000006870 function Effects 0.000 claims description 5
- 238000011156 evaluation Methods 0.000 claims description 4
- 239000010426 asphalt Substances 0.000 claims 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims 3
- 239000000203 mixture Substances 0.000 claims 3
- 241000208340 Araliaceae Species 0.000 claims 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 claims 1
- 235000003140 Panax quinquefolius Nutrition 0.000 claims 1
- 235000013399 edible fruits Nutrition 0.000 claims 1
- 235000008434 ginseng Nutrition 0.000 claims 1
- 238000005259 measurement Methods 0.000 abstract description 9
- 239000011810 insulating material Substances 0.000 abstract description 7
- 238000000691 measurement method Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000013459 approach Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 210000005036 nerve Anatomy 0.000 description 2
- 238000003062 neural network model Methods 0.000 description 2
- 210000002569 neuron Anatomy 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 210000004027 cell Anatomy 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 210000004218 nerve net Anatomy 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
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Abstract
The invention discloses a kind of appraisal procedures of distribution mutual inductor insulation performance, comprising: S1: choosing epoxy specimens, the epoxy specimens are classified according to different degree of agings；S2: assessment parameter relevant to the epoxy specimens ageing state in the S1 is measured respectively；S3: using the assessment parameter in the S2 as training sample data, constructing BP neural network, obtains the assessment models of the epoxy resin ageing state based on BP neural network；S4: determining the assessment parameter of the ageing state of epoxy resin to be measured, by the assessment models of the epoxy resin ageing state based on BP neural network described in the S3, assesses the ageing state of the epoxy resin to be measured, obtains assessment result.The state of insulation for pointedly reflecting insulating materials epoxy resin, also can be realized the ageing state assessment to epoxy resin when certain measurements are made a fault, and serious forgiveness is high.
Description
Technical field
The present invention relates to mutual inductor detection technique fields, and in particular to a kind of assessment side of distribution mutual inductor insulation performance
Method, system.
Background technique
Mutual inductor is to connect the once important electrical with electrical secondary system, plays and measures, monitors to power grid, protecting
With the important function of control.Cast-type mutual inductor is generally used in 10kV~35kV power distribution network, insulating materials is epoxy resin.
The environment as locating for mutual inductor is complicated severe, such as high temperature, extremely cold, jump in temperature, High aititude environmental factor are directly to metering
It is had an impact with the exterior insulation characteristic of distribution mutual inductor, eventually leads to mutual inductor failure.Under the influence of various environmental factors,
The electric property of epoxy resin, mechanical performance, physicochemical property can change, as dielectric dissipation factor increases, resistivity subtracts
Small etc., the items for analyzing epoxy resin are electrical, mechanical, physical and chemical index real-time monitoring and can assess the insulation shape of epoxy resin
State, and then reflect the insulation status of distribution mutual inductor, latency event existing for distribution mutual inductor insulating materials inside is found ahead of time
Barrier has very big meaning to the normal operation of mutual inductor.
The method for being directed to mutual inductor status assessment at present, is the overall operation state about mutual inductor mostly, cannot be complete
It is all-trans and mirrors the truth of mutual inductor insulation performance.
Summary of the invention
One of the technical issues of the present invention is directed to solve in the related technology at least to some extent.
For this purpose, the first purpose of this invention is to propose a kind of appraisal procedure of distribution mutual inductor insulation performance, it can
Reflect the truth of mutual inductor insulation performance.
Second object of the present invention is to propose a kind of assessment system of distribution mutual inductor insulation performance.
Third object of the present invention is to propose a kind of computer equipment.
Fourth object of the present invention is to propose a kind of computer readable storage medium.
In order to achieve the above objectives, a kind of assessment for distribution mutual inductor insulation performance that first aspect present invention embodiment proposes
Method, which comprises
S1: epoxy specimens are chosen, the epoxy specimens are classified according to different degree of agings.
S2: assessment parameter relevant to the epoxy specimens ageing state in the S1 is measured respectively.
S3: using the assessment parameter in the S2 as training sample data, BP neural network is constructed, the base is obtained
In the assessment models of the epoxy resin ageing state of BP neural network.
S4: determining the assessment parameter of the ageing state of epoxy resin to be measured, by described in the S3 based on BP nerve
The assessment models of the epoxy resin ageing state of network are assessed the ageing state of the epoxy resin to be measured, are commented
Estimate result.
According to one embodiment of present invention, in the S1 by the epoxy specimens according to different degree of agings into
Row classification, comprising: the epoxy specimens are divided into different ranks according to different degree of agings, every kind of rank
Epoxy specimens number is greater than 10 parts.
According to one embodiment of present invention, the assessment parameter relevant to the epoxy resin ageing state, comprising:
Electricity function index relevant parameter, mechanical performance index relevant parameter, physical and chemical index relevant parameter.
According to one embodiment of present invention, the electricity function index relevant parameter includes: epoxy resin medium loss
Factor, epoxy resin volume resistivity, epoxy resin partial discharge quantity, epoxy resin industrial frequency withstand voltage value.
According to one embodiment of present invention, the mechanical performance index relevant parameter includes: that epoxy resin stretches intensity.
According to one embodiment of present invention, the physical and chemical index relevant parameter include: epoxy resin stretch intensity,
Epoxy resin surface hydrophobicity.
The technical solution and the prior art of a kind of appraisal procedure of the distribution mutual inductor insulation performance provided through the invention
It compares, can achieve the following beneficial effects:
Firstly, it is a kind of right to establish the present invention is based on the electric property of epoxy resin, mechanical performance, physical and chemical index
The method that the ageing state of distribution mutual inductor insulating materials epoxy resin is assessed, using this method can from many aspects compared with
Adequately reflect the ageing state of epoxy resin, and then reflect the insulation performance state of distribution mutual inductor, assessment is matched
The operating status of net mutual inductor has certain directive significance.
Secondly, measuring device required for parameter according to the present invention is relatively simple, it is to epoxy resin aging
The conventional parameter being capable of measuring, simplicity needed for equipment, test method are easily understood, at the same can using electric property, mechanical performance,
The parameter of three aspects of physicochemical property establishes the corresponding relationship between ageing state.
Finally, the method applied in the present invention is different from traditional distribution mutual inductor state evaluating method, with more being directed to
Property reflect the state of insulation of insulating materials epoxy resin, also can be realized when certain measurements are made a fault to epoxy resin
Ageing state assessment, serious forgiveness is high, while increasing with measurement sample size, and tested epoxy specimens can be used as BP
The training sample of neural network model of performance appraisal is preferably learnt and is trained to model, is further increased epoxy resin aging and is commented
Estimate ability.
A kind of assessment system for distribution mutual inductor insulation performance that second aspect of the present invention embodiment proposes, the system packet
Include: first obtains module, and for choosing epoxy specimens, the epoxy specimens are carried out according to different degree of agings
Classification.
Second obtains module, for measuring assessment relevant to the epoxy specimens ageing state in the S1 respectively
Parameter.
Training module constructs BP nerve net using the assessment parameter in second module as training sample data
Network obtains the assessment models of the epoxy resin ageing state based on BP neural network.
Evaluation module, the assessment parameter of the ageing state for determining epoxy resin to be measured, described in the S3
The assessment models of epoxy resin ageing state based on BP neural network comment the ageing state of the epoxy resin to be measured
Estimate.
According to one embodiment of present invention, it described first obtains the epoxy specimens in module according to different
Degree of aging is classified, comprising: the epoxy specimens are divided into different ranks according to different degree of agings, it is described
The epoxy specimens number of every kind of rank is greater than 10 parts.
A kind of computer equipment that third aspect present invention embodiment proposes, computer equipment, including memory, processor
And store the computer program that can be run on a memory and on a processor, which is characterized in that the processor executes institute
The step of realizing approach described above when stating computer program.
A kind of computer readable storage medium that fourth aspect present invention embodiment proposes, is stored thereon with computer journey
Sequence, it is characterised in that: the step of approach described above is realized when the computer program is executed by processor.
Additional aspect of the invention and advantage will be set forth in part in the description, partially will from the following description
Become obvious, or practice through the invention is recognized.
Detailed description of the invention
By reference to the following drawings, exemplary embodiments of the present invention can be more fully understood by:
Fig. 1 is a kind of appraisal procedure flow chart for distribution mutual inductor insulation performance that the present invention discloses embodiment；
Fig. 2 is a kind of assessment system block diagram for distribution mutual inductor insulation performance that the present invention discloses embodiment.
Specific embodiment
Exemplary embodiments of the present invention are introduced referring now to the drawings, however, the present invention can use many different shapes
Formula is implemented, and is not limited to the embodiment described herein, and to provide these embodiments be at large and fully disclose
The present invention, and the scope of the present invention is sufficiently conveyed to person of ordinary skill in the field.Show for what is be illustrated in the accompanying drawings
Term in example property embodiment is not limitation of the invention.In the accompanying drawings, identical cells/elements use identical attached
Icon note.
Unless otherwise indicated, term (including scientific and technical terminology) used herein has person of ordinary skill in the field
It is common to understand meaning.Further it will be understood that with the term that usually used dictionary limits, should be understood as and its
The context of related fields has consistent meaning, and is not construed as Utopian or too formal meaning.
A kind of appraisal procedure of distribution mutual inductor insulation performance provided by the invention, including the measurement of epoxy resin different kinds of parameters
And the aging performance using neural network analysis epoxy resin, the epoxy resin different kinds of parameters should include the electricity of material
Gas performance indicator, such as dielectric dissipation factor, volume resistivity, partial discharge quantity, industrial frequency withstand voltage value；Mechanical performance index is such as drawn
Stretch intensity；Physical and chemical index, such as surface hydrophobicity.The neural network
It is assessed using aging conditions of many reference amounts testing result to epoxy resin, finally obtains the exhausted of distribution mutual inductor
Edge condition evaluation results.The present invention is measured by the multiple performance index to epoxy resin, and utilizes BP neural network mould
Pattern synthesis judges the state of insulation of epoxy resin, to realize the ageing state assessment of epoxy resin.
In order to make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with flow diagram to this
The implementing procedure of invention is described in detail.Specific implementation step is as follows:
S1: epoxy specimens are chosen, epoxy specimens are classified according to different degree of agings.
According to one embodiment of present invention, epoxy specimens are classified according to different degree of agings, comprising:
The degree of aging of epoxy specimens is divided into normal, good, general, four degree of aging, chooses 4 different degree of agings
Epoxy specimens are each several, and the epoxy specimens number for being guaranteed at different conditions is no less than 10 parts.
S2: assessment parameter relevant to epoxy specimens ageing state described in S1 is measured respectively.
According to one embodiment of present invention, epoxy resin ageing state assessment parameter includes dielectric dissipation factor, volume
Resistivity, partial discharge quantity, industrial frequency withstand voltage value, tensile strength, surface hydrophobicity.
Wherein, epoxy resin medium loss factor measurement method should be carried out according to national standard GB/T 1409-1978, be used
Dielectric and magnetic tester measures, and need to guarantee that the voltage swing measured every time is identical with frequency, take the average value measured twice
As final data.
The measurement method of epoxy resin volume resistivity should be carried out according to national standard GB/T 1410-1989, using insulated electro
Resistance tester measures, meanwhile, the volume resistivity of epoxy resin is closely related with the electrochemical time, more unified in order to obtain
It should guarantee to measure under conditions of the electrochemical time is 1min as far as possible with the volume resistivity of standard.
Epoxy resin shelf depreciation measuring method should be carried out according to national standard GB/T 7354-2003, partial discharge in this patent
Measurement parameters include 1pC partial discharge amount starting voltage, 1 minute partial discharge total amount, two parameters.
Epoxy resin industrial frequency withstand voltage measurement method is carried out according to national standard GB/T 16927.1-1997, wherein voltage according to
The speed of 2kV/s rises, until puncturing, repeats 6 tests, calculates average voltage breakdown as industrial frequency withstand voltage value.
Epoxy resin stretches strength measurement method and should carry out according to national standard GB/T 2567-2008, using the omnipotent examination of material
Test machine or the measurement of individual cupping machine, test speed 10mm/min, when should be noted clamping sample, the central axis of sample
It is consistent with the centring of upper and lower fixture, it is loaded by fixing speed uniformly continuous, until destroying.
Epoxy resin surface hydrophobicity measurement method should be carried out according to GB/T 1462-2005, using water injector to survey
It measures sample and carries out water spray test, the reading for the HC value that complete paired samples hydrophobicity is classified within 30s after water spray.
Measure dielectric dissipation factor, the volume resistivity, shelf depreciation water of epoxy specimens respectively according to above method
Flat, industrial frequency withstand voltage level, tensile strength, surface hydrophobicity, form the sample of four kinds of different degree of agings, and each sample includes to be situated between
Electrical loss factor, volume resistivity, 1pC partial discharge amount starting voltage, 1 minute partial discharge total amount, industrial frequency withstand voltage value, tensile strength, table
Face 7 parameters of hydrophobicity HC value input network for the data being collected into as the training sample set of BP neural network, are instructed
Practice.
S3: using the assessment parameter in S2 as training sample data, BP neural network is constructed, sample data is carried out
Repetition training obtains the assessment models of the epoxy resin ageing state based on BP neural network, comprising:
S31: the BP neural network number of plies is determined: theoretically it has been proved that the network of single hidden layer can solve major part
Problem, it is only necessary to which the number of the neuron node appropriate for increasing hidden layer, Lai Shixian arbitrary nonlinear mapping, the present invention are built
Vertical network model has one layer of input layer, and one layer of hidden layer, one layer of output layer, that is, the BP neural network number of plies established is 3 layers.
S32: determine input number of nodes: measured in the present invention epoxy resin sample dielectric dissipation factor, volume resistivity,
7 1pC partial discharge amount starting voltage, 1 minute partial discharge total amount, industrial frequency withstand voltage value, tensile strength, surface hydrophobicity HC value parameters, because
This input number of nodes is 7.
S33: determine node in hidden layer: hidden layer determination is based primarily upon empirical equationIt determines,
Wherein n is input layer number, and M is hidden layer number of nodes, and m is output layer number of nodes, and a is the constant between 1~10.
S34: determine output layer neuron number: the output result of this patent only one, i.e. the aging shape of epoxy resin
Condition, therefore the number of output layer is 1.When export result be ∈ (0.75,1] when, epoxy resin situation is normal；When output result
For ∈ (0.5,0.75] when, epoxy resin situation is good；When export result be ∈ (0.25,0.5] when, epoxy resin situation is
Generally；When exporting result is [0,0.25] ∈, epoxy resin situation is aging.
S4: determining the assessment parameter of the ageing state of epoxy resin to be measured, by being based on BP neural network described in S3
Epoxy resin ageing state assessment models, the ageing state of the epoxy resin to be measured is assessed.
For estimation epoxy specimens to be evaluated, its parameters successively is measured according to the method in S4, and measurement is joined
Number inputs in established neural network, assesses epoxy specimens ageing state.
The technical solution and the prior art of a kind of appraisal procedure of the distribution mutual inductor insulation performance provided through the invention
It compares, can achieve the following beneficial effects:
Firstly, it is a kind of right to establish the present invention is based on the electric property of epoxy resin, mechanical performance, physical and chemical index
The method that the ageing state of distribution mutual inductor insulating materials epoxy resin is assessed, using this method can from many aspects compared with
Adequately reflect the ageing state of epoxy resin, and then reflect the insulation performance state of distribution mutual inductor, assessment is matched
The operating status of net mutual inductor has certain directive significance.
Secondly, measuring device required for parameter according to the present invention is relatively simple, it is to epoxy resin aging
The conventional parameter being capable of measuring, simplicity needed for equipment, test method are easily understood, at the same can using electric property, mechanical performance,
The parameter of three aspects of physicochemical property establishes the corresponding relationship between ageing state.
Finally, the method applied in the present invention is different from traditional distribution mutual inductor state evaluating method, with more being directed to
Property reflect the state of insulation of insulating materials epoxy resin, also can be realized when certain measurements are made a fault to epoxy resin
Ageing state assessment, serious forgiveness is high, while increasing with measurement sample size, and tested epoxy specimens can be used as BP
The training sample of neural network model of performance appraisal is preferably learnt and is trained to model, is further increased epoxy resin aging and is commented
Estimate ability.
Second aspect of the present invention discloses a kind of assessment system 200 of distribution mutual inductor insulation performance, comprising:
First obtains module 201, for choosing epoxy specimens, by the epoxy specimens according to different agings
Degree is classified.
Second obtains module 203, relevant to the epoxy specimens ageing state in the S1 for measuring respectively
Assess parameter.
Training module 205 constructs BP nerve using the assessment parameter in second module as training sample data
Network obtains the assessment models of the epoxy resin ageing state based on BP neural network
Evaluation module 207, the assessment parameter of the ageing state for determining epoxy resin to be measured, passes through the institute in the S3
The assessment models for stating the epoxy resin ageing state based on BP neural network carry out the ageing state of the epoxy resin to be measured
Assessment.
According to one embodiment of present invention, it first obtains the epoxy specimens in module according to different agings
Degree is classified, comprising: the epoxy specimens are divided into different ranks according to different degree of agings, it is every kind described
The epoxy specimens number of rank is greater than 10 parts.
Third aspect present invention discloses a kind of computer equipment, computer equipment, including memory, processor and deposits
The computer program that can be run on a memory and on a processor is stored up, when processor executes the computer program more than realization
The step of method.
Fourth aspect present invention discloses a kind of computer readable storage medium, is stored thereon with computer program, calculates
The step of above method is realized when machine program is executed by processor.
The present invention is described by reference to a small amount of embodiment.However, it is known in those skilled in the art, as
Defined by subsidiary Patent right requirement, in addition to the present invention other embodiments disclosed above equally fall in it is of the invention
In range.
Normally, all terms used in the claims are all solved according to them in the common meaning of technical field
It releases, unless in addition clearly being defined wherein.All references " one/described/be somebody's turn to do [device, component etc.] " are all opened ground
At least one example being construed in described device, component etc., unless otherwise expressly specified.Any method disclosed herein
Step need not all be run with disclosed accurate sequence, unless explicitly stated otherwise.
Claims (10)
1. a kind of appraisal procedure of distribution mutual inductor insulation performance, which is characterized in that the described method includes:
S1: epoxy specimens are chosen, the epoxy specimens are classified according to different degree of agings；
S2: assessment parameter relevant to the epoxy specimens ageing state in the S1 is measured respectively；
S3: using the assessment parameter in the S2 as training sample data, constructing BP neural network, obtains described based on BP
The assessment models of the epoxy resin ageing state of neural network；
S4: determining the assessment parameter of the ageing state of epoxy resin to be measured, by being based on BP neural network described in the S3
Epoxy resin ageing state assessment models, the ageing state of the epoxy resin to be measured is assessed, obtain assessment knot
Fruit.
2. the method according to claim 1, wherein by the epoxy specimens according to different in the S1
Degree of aging is classified, comprising: the epoxy specimens are divided into different ranks according to different degree of agings, it is described
The epoxy specimens number of every kind of rank is greater than 10 parts.
3. the method according to claim 1, wherein the assessment relevant to the epoxy resin ageing state
Parameter, comprising: electricity function index relevant parameter, mechanical performance index relevant parameter, physical and chemical index relevant parameter.
4. according to the method described in claim 3, it is characterized in that, the electricity function index relevant parameter includes: asphalt mixtures modified by epoxy resin
Rouge dielectric dissipation factor, epoxy resin volume resistivity, epoxy resin partial discharge quantity, epoxy resin industrial frequency withstand voltage value.
5. according to the method described in claim 3, it is characterized in that, the mechanical performance index relevant parameter includes: asphalt mixtures modified by epoxy resin
Rouge tensile strength.
6. according to the method described in claim 3, it is characterized in that, the physical and chemical index relevant parameter includes: asphalt mixtures modified by epoxy resin
Rouge tensile strength, epoxy resin surface hydrophobicity.
7. a kind of assessment system of distribution mutual inductor insulation performance, which is characterized in that the system comprises:
First obtain module, for choosing epoxy specimens, by the epoxy specimens according to different degree of agings into
Row classification；
Second obtains module, for measuring assessment ginseng relevant to the epoxy specimens ageing state in the S1 respectively
Amount；
Training module constructs BP neural network, obtains using the assessment parameter in second module as training sample data
To the assessment models of the epoxy resin ageing state based on BP neural network；
Evaluation module, the assessment parameter of the ageing state for determining epoxy resin to be measured, by being based on described in the S3
The assessment models of the epoxy resin ageing state of BP neural network assess the ageing state of the epoxy resin to be measured.
8. system according to claim 7, which is characterized in that described first obtains the epoxy specimens in module
It is classified according to different degree of agings, comprising: the epoxy specimens are divided into difference according to different degree of agings
Rank, the epoxy specimens number of every kind of rank is greater than 10 parts.
9. a kind of computer equipment, computer equipment, including memory, processor and storage on a memory and can handled
The computer program run on device, which is characterized in that the processor realized when executing the computer program claim 1 to
The step of any one of 6 the method.
10. a kind of computer readable storage medium, is stored thereon with computer program, it is characterised in that: the computer program
The step of any one of claim 1 to 6 the method is realized when being executed by processor.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112147473A (en) * | 2020-09-28 | 2020-12-29 | 哈尔滨理工大学 | Screening method of high-insulation-strength gas |
| CN112162182A (en) * | 2020-09-28 | 2021-01-01 | 哈尔滨理工大学 | Gas dielectric strength prediction method based on neural network |
| CN112305338A (en) * | 2020-09-21 | 2021-02-02 | 中国电力科学研究院有限公司 | Aging degree detection method and system for dry-type transformer |
| CN112305339A (en) * | 2020-09-28 | 2021-02-02 | 中国电力科学研究院有限公司 | Method for testing aging performance of insulating film of dry-type air-core reactor |
| CN112733349A (en) * | 2020-12-31 | 2021-04-30 | 国网天津市电力公司 | Epoxy resin performance evaluation method based on fuzzy comprehensive evaluation method |
| CN113447783A (en) * | 2021-08-30 | 2021-09-28 | 武汉格蓝若智能技术有限公司 | Voltage transformer insulation fault identification model construction method and device |
| CN114167221A (en) * | 2021-12-13 | 2022-03-11 | 华北电力大学（保定） | Epoxy resin insulation aging discrimination and inspection method under different voltage frequencies |
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| CN108959769A (en) * | 2018-06-29 | 2018-12-07 | 国网北京市电力公司 | A kind of state evaluating method and device of insulating oil |
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- 2019-03-12 CN CN201910185191.6A patent/CN109752685A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108959769A (en) * | 2018-06-29 | 2018-12-07 | 国网北京市电力公司 | A kind of state evaluating method and device of insulating oil |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112305338A (en) * | 2020-09-21 | 2021-02-02 | 中国电力科学研究院有限公司 | Aging degree detection method and system for dry-type transformer |
| CN112305338B (en) * | 2020-09-21 | 2022-10-25 | 中国电力科学研究院有限公司 | Aging degree detection method and system for dry-type transformer |
| CN112147473A (en) * | 2020-09-28 | 2020-12-29 | 哈尔滨理工大学 | Screening method of high-insulation-strength gas |
| CN112162182A (en) * | 2020-09-28 | 2021-01-01 | 哈尔滨理工大学 | Gas dielectric strength prediction method based on neural network |
| CN112305339A (en) * | 2020-09-28 | 2021-02-02 | 中国电力科学研究院有限公司 | Method for testing aging performance of insulating film of dry-type air-core reactor |
| CN112733349A (en) * | 2020-12-31 | 2021-04-30 | 国网天津市电力公司 | Epoxy resin performance evaluation method based on fuzzy comprehensive evaluation method |
| CN113447783A (en) * | 2021-08-30 | 2021-09-28 | 武汉格蓝若智能技术有限公司 | Voltage transformer insulation fault identification model construction method and device |
| CN113447783B (en) * | 2021-08-30 | 2021-11-26 | 武汉格蓝若智能技术有限公司 | Voltage transformer insulation fault identification model construction method and device |
| CN114167221A (en) * | 2021-12-13 | 2022-03-11 | 华北电力大学（保定） | Epoxy resin insulation aging discrimination and inspection method under different voltage frequencies |
| CN114167221B (en) * | 2021-12-13 | 2023-06-13 | 华北电力大学（保定） | Epoxy resin insulation aging discrimination and test method under different voltage frequencies |
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Application publication date: 20190514 |