CN106126766A - Porcelain long rod insulator anti-pollution characteristic optimization method based on model test - Google Patents
Porcelain long rod insulator anti-pollution characteristic optimization method based on model test Download PDFInfo
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Abstract
The invention discloses porcelain long rod insulator anti-pollution characteristic optimization method based on model test, comprise the steps: that the porcelain long rod insulator modelling of step SS1 makes, specifically include: according to the model of existing porcelain long rod insulator, design the porcelain long rod insulator model of full skirt parameters different with current version, make porcelain long rod insulator model according to the full skirt parameter of porcelain long rod insulator model with polythene PE materials processing；The artificial pollution flashover test of step SS2 porcelain long rod insulator model, specifically includes: the porcelain long rod insulator model completing processing and fabricating carries out artificial pollution flashover test, obtains the pollution flashover voltage of each model；Step SS3 optimizes to be analyzed.The present invention does not accounts for using RTV antifouling flush paint, and the method for spraying RTV coating is relatively costly, and is the remedial measure under having pollution flashover risk, there is also degradation risk；Reduce optimization design cost simultaneously, use model test can conveniently change full skirt parameter, obtain optimal allocation.
Description
Technical field
The present invention relates to insulator anti-pollution characteristic optimization method, especially relate to long rod type porcelain based on model test insulation
Sub-anti-pollution characteristic Optimization Design.
Background technology
Insulator is one of key equipment of transmission line of electricity external insulation, and the topmost insulator of current China transmission line of electricity has
Suspension disc insulator, disk-shaped suspension glass insulator and rod insulator composite insulator, with three kinds of widely used insulation
Son is compared, and it is good that porcelain long rod insulator has self-cleaning property, and retting-flax wastewater is big, can not breakdown, without null value problem, electromechanical properties
The advantages such as good, non-maintaining, length in service life, in China Jiangsu, Hubei, Anhui, 220kV, 500kV alternating current circuit of zhejiang and other places
And ± 500kV DC line is used widely.Electric transmission line isolator is chronically exposed to open air, due to the ash that naturally falls,
The factor impacts such as industrial pollution, surface can be adhered to dunghill, form pollution layer.In the environment of humidity is relatively big, pollution layer can be subject in moisture absorption
Tide so that the solubility electrolyte dissolution in pollution layer, pollution layer starts conduction, and defilement and insulation sub-surface will flow through letting out of certain amplitude
Leakage current, progressively develops into shelf depreciation.When the development of electric arc runs through upper and lower two electrodes of insulator, insulating surface dodges
Network, causes pollution flashover phenomenon.Pollution flashover accident mostly occurs under working voltage, often results in power outage on a large scale, to power train
The safe operation of system is very harmful.In recent years, along with rapid industrial development, environmental pollution is day by day serious, and Defile-proof for Electric Transmitting Line dodges
Work faces immense pressure, and rarely the porcelain long rod insulator of pollution flashover tripping operation report occurs in that a lot of serious pollution flashover tripping operation thing
Therefore, such as North Jiangsu Area, Jiangsu there occurs some porcelain long rod insulator pollution flashover trip accidents winter in spring in 2011.Therefore, for
Preventing porcelain long rod insulator generation pollution flashover accident, the anti-pollution characteristic improving porcelain long rod insulator is the most necessary.
For insulator contamination accident, the method mainly spraying RTV antifouling work improving insulator anti-pollution characteristic at present is coated with
Material.CN201210151675 proposes a kind of antifouling flush paint being applied to insulator and using method thereof, it is achieved that antifouling work
Coating is keep while hydrophobicity can the Electric Field Distribution of uniform insulation.CN201410412093 is for different insulative subtype
Number, RTV antifouling flush paint type and RTV coating layer thickness propose the painting method of RTV antifouling flush paint of a kind of insulator.
CN201310635119 proposes and scribbles the method that the insulator of RTV antifouling flush paint coats RTV antifouling flush paint again.
CN201510078043 proposes a kind of method and device improving suspension insulator pollution flashover performance, on high-pressure side transmission pressure
Sheathed insulating sheath, arranges grading ring at wire folder, improves electric field distortion.To sum up, insulator anti-pollution characteristic is improved at present
Method is the most single, mainly spraying RTV coating, relatively costly economical not, installs insulating sheath and grading ring adds and executes
Work difficulty.And lack the anti-pollution characteristic optimization method for porcelain long rod insulator.Therefore, research porcelain long rod insulator resistant
Performance optimization method is the most necessary.
Summary of the invention
The purpose of the present invention is that the shortcoming and defect overcoming prior art to exist, it is provided that length based on model test
Bar-shaped porcelain insulator anti-pollution characteristic optimization method.
The present invention adopts the following technical scheme that porcelain long rod insulator anti-pollution characteristic optimization method based on model test,
It is characterized in that, comprise the steps:
The porcelain long rod insulator modelling of step SS1 makes, and specifically includes: according to the type of existing porcelain long rod insulator
Number, design the porcelain long rod insulator model of full skirt parameters different with current version, according to the umbrella of porcelain long rod insulator model
The polythene PE materials processing of skirt parameter makes porcelain long rod insulator model；
The artificial pollution flashover test of step SS2 porcelain long rod insulator model, specifically includes: complete processing and fabricating
Porcelain long rod insulator model carries out artificial pollution flashover test, obtains the pollution flashover voltage of each model；
Step SS3 optimizes to be analyzed, and specifically includes:
The pollution flashover voltage of model is contrasted by step SS31 with the pollution flashover voltage of corresponding actual (tube) length bar-shaped porcelain insulator, is become
Compare COEFFICIENT K；
Step SS32 analyzes the pollution flashover voltage data of each model, and the different full skirt parameter of research is to porcelain long rod insulator pollution flashover
The impact of characteristic, obtains the porcelain long rod insulator optimum full skirt parameter configuration with preferable Flashover Characteristics；
Step SS33, according to one porcelain long rod insulator model of optimal allocation processing and fabricating, carries out pollution flashover test to model
Obtain pollution flashover voltage, contrast with other models；Simultaneously according to no-load voltage ratio COEFFICIENT K, obtain the actual (tube) length rod that optimal allocation model is corresponding
The pollution flashover voltage of shape porcelain insulator, contrasts with existing actual (tube) length bar-shaped porcelain insulator, and checking optimizes the reasonability of design.
Preferably, the full skirt parameter described in described step SS1 includes: umbrella spacing, umbrella stretch out, diameter of mandrel.
Preferably, the porcelain long rod insulator model described in described step SS1 uses polythene PE material to be processed system
Make.
The beneficial effect that the present invention is reached: (1) compared with prior art, the present invention does not accounts for using RTV antifouling work
Coating, the method for spraying RTV coating is relatively costly, and is the remedial measure under having pollution flashover risk, there is also degradation risk；
(2) property of the present invention is directed to is relatively strong, is specific to very widely used today porcelain long rod insulator；(3) present invention is tried by model
Test the optimization method obtaining porcelain long rod insulator anti-pollution characteristic, reduce optimization design cost, use model test permissible
The convenient full skirt parameter that changes, acquisition optimal allocation；(4) present invention differentiated technology of porcelain long rod insulator is transformed, state
Overhaul significant.
Accompanying drawing explanation
Fig. 1 is the structural representation of the front view of the porcelain long rod insulator model of the present invention, wherein, 11-long rod type porcelain
Insulator model, 12-screw.
Fig. 2 is the structural representation of the axonometric chart of the porcelain long rod insulator model of the present invention, wherein, 21-plug, 22-
Big full skirt, the little full skirt of 23-, 24-screw.
Detailed description of the invention
The invention will be further described below in conjunction with the accompanying drawings.Following example are only used for clearly illustrating the present invention
Technical scheme, and can not limit the scope of the invention with this.
Fig. 1 is the structural representation of the front view of porcelain long rod insulator model, wherein, and 11-porcelain long rod insulator mould
Type, 12-screw.Map parameter is described as follows:
D diameter of mandrel, P1 gamp umbrella stretches out, and P2 umbellule umbrella stretches out, and the average umbrella of Pav stretches out, S1 gamp umbrella
Spacing, S2 adjacent umbrella umbrella spacing, H insulation distance, L1 first full skirt away from top distance, L2 every full skirt thickness,
The last a piece of full skirt of L3 is away from bottom distance.Wherein, Pav=(P1+P2)/2, for simplifying difficulty of processing, full skirt inclination angle is 0 °, spiral shell
Suspended model during the convenient test in hole 12.
The full skirt parameter of porcelain long rod insulator mainly include umbrella spacing, umbrella stretch out, diameter of mandrel.Existing five kinds of models are long
The parameter of bar-shaped porcelain insulator is as shown in table 1.Parameter according to existing porcelain long rod insulator adjusts, and changes umbrella spacing, umbrella
Stretch out, diameter of mandrel, design porcelain long rod insulator model, model parameter is as shown in table 2.Design considerations " the JB/ of model parameter
T5895-1991 filth area insulator uses directive/guide ", parameter need to meet: S1 > 30mm, S1/P1 >=0.8, P1-P2 >=15mm.
Table 1 existing porcelain long rod insulator parameter
Table 2 porcelain long rod insulator model parameter
For reducing processing cost and short form test amount, the present invention devises A1, A2, A3, B1, B2, C1, C2, D1 eight kinds altogether
Porcelain long rod insulator model, wherein A1, A2, A3 umbrella stretches out identical with diameter of mandrel, and umbrella spacing is different, can be used to study between umbrella
Away from impact；A2, B1, B2 umbrella spacing is identical with diameter of mandrel, and umbrella stretches out difference, can be used to study the impact that umbrella stretches out；A2、
C1, C2 umbrella spacing and umbrella stretch out identical, and diameter of mandrel is different, can be used to study the impact of diameter of mandrel；A2, D1 full skirt parameter phase
With, umbrella shape is different, can be used to contrast the difference of different umbrella shape.Long rod is made according to model parameter polythene PE materials processing
Porcelain insulator model.
(2) the artificial pollution flashover test of porcelain long rod insulator model
The artificial pollution flashover test of porcelain long rod insulator model is according to " GB/T 4585-2004 AC system high pressure
The artificial pollution test of insulator " carry out.Use artificial fog chamber to simulate wet weather, test voltage through wall bushing from mist
Outdoor testing transformer high-pressure side introduces, and capacitive divider is for exchanging the measurement of pollution flashover voltage.
Test uses solid layer method.Before test, cleaning porcelain long rod insulator model is also dried.Test NaCl simulation is led
Isoelectric substance, simulates insoluble substance with kieselguhr, and polluting manners uses quantitative brushing method.According to the salt needed for test product to be coated
Close, grey close and test product surface area, calculates the NaCl required for every test product of coating and diatomaceous weight, weighs aequum
NaCl and kieselguhr, the filthy solution of configuration, according to quantitative brushing method, filth solution is painted on completely, equably model table
Face.After brushing, test product is vertically placed or is hung on naturally to dry in the shade 24 hours on indoor test product frame and waits to try.
Test is taked, by charged for test product rear moistening test method, to use the flashover voltage of constant voltage Up-and-down test model.
First to test product apply constant voltage, then make test product gradually make moist, in the process voltages keep constant and maintain 35 minutes to 1
More than hour, until flashover or tolerance.Having not less than 10 times is done in the test requirements document of 50% flashover voltage under a certain pollution degree
Effect test, if front once not over tolerance during test, then the test voltage reducing by 10% is tested again, if front once
Having passed through tolerance, then raised 10% and test, such repetition test, until efficiency test number of times reaches more than ten times and is
Only.50% flashover voltage is calculated as follows:
Keeping gray density during test is that 1.0mg/cm2 is constant, and salt density takes two kinds of feelings of 0.05mg/cm2 and 0.1mg/cm2
Condition, defiles to model A1, A2, A3, B1, B2, C1, C2, D1 respectively, measures its pollution flashover voltage.Result is as shown in table 3.With
Time also the single-unit porcelain long rod insulator of LP85/19+18/1500 model is defiled, record its pollution flashover voltage in salt density
It is respectively U1, U2 during for 0.05mg/cm2 and 0.1mg/cm2.
Table 3 model pollution flashover voltage result of the test
(3) analysis is optimized
Owing to the full skirt parameter of A2 model is consistent with the porcelain long rod insulator of LP85/19+18/1500 model, will test
In both pollution flashover voltage compare available porcelain long rod insulator model and correspondence actual single-unit porcelain long rod insulator pollution flashover
The no-load voltage ratio coefficient of voltage.When salt density is 0.05mg/cm2, no-load voltage ratio COEFFICIENT K 1=U1/UA21；When salt density is 0.1mg/cm2
Time, no-load voltage ratio COEFFICIENT K 2=U2/UA22.
Light filthy and two kinds of situations of heavy pollution are represented respectively when salt density is 0.05mg/cm2 and 0.1mg/cm2.A1、A2、
The umbrella spacing difference of A3 is respectively 56,66,90mm, compare the pollution flashover voltage of A1, A2, A3, make under two kinds of salt density case dirty
Lightning pressure, with the change curve of umbrella spacing, analyzes the impact on Flashover Characteristics of the umbrella spacing.The umbrella of A2, B1, B2 stretches out different difference
Be 62,53,70mm, compare the pollution flashover voltage of A2, B1, B2, make the change that under two kinds of salt density case, pollution flashover voltage stretches out with umbrella
Change curve, analyze umbrella and stretch out the impact on Flashover Characteristics.The diameter of mandrel difference of A2, C1, C2 is respectively 85,75,105mm, than
The pollution flashover voltage of relatively A2, C1, C2, make two kinds of salt close in the case of pollution flashover voltage with the change curve of diameter of mandrel, analyze plug
The diameter impact on Flashover Characteristics.A2 umbrella shape is small one and large one, and D1 umbrella shape is isometrical, compares the pollution flashover voltage of A2, D1, analyzes not
Difference with umbrella shape Flashover Characteristics.
To sum up, the optimum full skirt ginseng with the porcelain long rod insulator model of preferable Flashover Characteristics is obtained according to analysis result
Number (umbrella spacing, umbrella stretch out, diameter of mandrel) configuration.According to optimal allocation according to one long rod of the method processing and fabricating in (1)
Porcelain insulator model E, carries out pollution flashover test according to the method in (2) to model E and obtains pollution flashover voltage UE, with other model pollution flashovers
Voltage data contrasts；Simultaneously according to no-load voltage ratio coefficient, obtain the pollution flashover of actual (tube) length bar-shaped porcelain insulator corresponding to optimal allocation model E
Voltage is KUE, and with existing actual (tube) length bar-shaped porcelain insulator pollution flashover voltage Data Comparison, checking optimizes the reasonability of design.Long rod
Shape porcelain insulator full skirt parameter optimal allocation can instruct design and the remodeling of existing porcelain long rod insulator.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For Yuan, on the premise of without departing from the technology of the present invention principle, it is also possible to make some improvement and deformation, these improve and deformation
Also should be regarded as protection scope of the present invention.
Claims (3)
1. porcelain long rod insulator anti-pollution characteristic optimization method based on model test, it is characterised in that comprise the steps:
The porcelain long rod insulator modelling of step SS1 makes, and specifically includes: according to the model of existing porcelain long rod insulator,
Design the porcelain long rod insulator model of full skirt parameters different with current version, join according to the full skirt of porcelain long rod insulator model
Number polythene PE materials processing makes porcelain long rod insulator model；
The artificial pollution flashover test of step SS2 porcelain long rod insulator model, specifically includes: the long rod completing processing and fabricating
Shape porcelain insulator model carries out artificial pollution flashover test, obtains the pollution flashover voltage of each model；
Step SS3 optimizes to be analyzed, and specifically includes:
The pollution flashover voltage of model is contrasted by step SS31 with the pollution flashover voltage of corresponding actual (tube) length bar-shaped porcelain insulator, obtains no-load voltage ratio system
Number K；
Step SS32 analyzes the pollution flashover voltage data of each model, and the different full skirt parameter of research is to porcelain long rod insulator Flashover Characteristics
Impact, obtain the porcelain long rod insulator optimum full skirt parameter configuration with preferable Flashover Characteristics；
Step SS33, according to one porcelain long rod insulator model of optimal allocation processing and fabricating, carries out pollution flashover test to model and obtains
Pollution flashover voltage, contrasts with other models；Simultaneously according to no-load voltage ratio COEFFICIENT K, obtain the actual (tube) length rod type porcelain that optimal allocation model is corresponding
The pollution flashover voltage of insulator, contrasts with existing actual (tube) length bar-shaped porcelain insulator, and checking optimizes the reasonability of design.
Porcelain long rod insulator anti-pollution characteristic optimization method based on model test the most according to claim 1, its feature
Being, the full skirt parameter described in described step SS1 includes: umbrella spacing, umbrella stretch out, diameter of mandrel.
Porcelain long rod insulator anti-pollution characteristic optimization method based on model test the most according to claim 1, its feature
Being, the porcelain long rod insulator model described in described step SS1 uses polythene PE material to be processed making.
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| CN201610150618.5A CN106126766B (en) | 2016-03-16 | 2016-03-16 | Model test-based method for optimizing stain resistance of long rod-shaped porcelain insulator |
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| CN201610150618.5A CN106126766B (en) | 2016-03-16 | 2016-03-16 | Model test-based method for optimizing stain resistance of long rod-shaped porcelain insulator |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107576896A (en) * | 2017-08-30 | 2018-01-12 | 中国南方电网有限责任公司电网技术研究中心 | Rain-lightning voltage test method for porcelain post insulator |
| CN110018402A (en) * | 2019-04-18 | 2019-07-16 | 国网山东省电力公司电力科学研究院 | A kind of analog insulation sublist face RTV coating deteriorates the pollution flashover test method of aging |
-
2016
- 2016-03-16 CN CN201610150618.5A patent/CN106126766B/en active Active
Non-Patent Citations (2)
| Title |
|---|
| 本刊通讯员: "塑料绝缘子试验", 《科技简报》 * |
| 赵宇明等: "高压直流线路用长棒形瓷绝缘子的绝缘特性", 《南方电网技术》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107576896A (en) * | 2017-08-30 | 2018-01-12 | 中国南方电网有限责任公司电网技术研究中心 | Rain-lightning voltage test method for porcelain post insulator |
| CN110018402A (en) * | 2019-04-18 | 2019-07-16 | 国网山东省电力公司电力科学研究院 | A kind of analog insulation sublist face RTV coating deteriorates the pollution flashover test method of aging |
| CN110018402B (en) * | 2019-04-18 | 2021-05-25 | 国网山东省电力公司电力科学研究院 | Pollution flashover test method for simulating corrosion and aging of RTV coating on surface of insulator |
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