CN104765920A - Insulation defect design method and device for capacitive sleeve - Google Patents
Insulation defect design method and device for capacitive sleeve Download PDFInfo
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- CN104765920A CN104765920A CN201510153046.1A CN201510153046A CN104765920A CN 104765920 A CN104765920 A CN 104765920A CN 201510153046 A CN201510153046 A CN 201510153046A CN 104765920 A CN104765920 A CN 104765920A
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Abstract
The invention provides an insulation defect design method and device for a capacitive sleeve. The method comprises the steps of building a normal capacitive sleeve model, and determining the electric field distribution of the normal capacitive sleeve model; B, adjusting the physical properties of the normal capacitive sleeve model to build a capacitive sleeve insulation defect model; C, determining the electric field distribution of the capacitive sleeve insulation defect model, and determining the maximum field strength distortion multiple according to the maximum field strength value of the normal capacitive sleeve model and the maximum field strength value of the insulation defect model; D, if the maximum field strength distortion multiple is less than the first preset threshold or more than the second preset threshold, adjusting the physical property of the insulation defect model, re-determining the maximum field strength distortion multiple until the maximum field strength distortion multiple is between the first preset threshold and the second preset threshold. With the adoption of the method and the device, the electric field distribution in the capacitive sleeve model can be controlled; the parameters can be conveniently adjusted; the actual condition can be matched well.
Description
Technical field
The present invention relates to high voltage and insulation technology field, particularly relate to the analytical design technique field of insulator arrangement.
Background technology
When current－carrying conductor needs through the metal box shell different from its current potential or wall, need to use sleeve pipe the metal box shell of conductor and zero potential or wall to be separated.Sleeve pipe is very important insulator arrangement in high voltage field.Bushing is divided into filling type sleeve pipe and condenser-type terminal, and the cable paper in filling type sleeve pipe is similar to all pressures pole plate in condenser-type terminal, and the capacitor core in condenser-type terminal is exactly the capacitor of a string coaxial cylindrical.Filling type sleeve pipe can be divided into again single oil clearance sleeve pipe and heavy wool gap sleeve pipe, and condenser-type terminal can be divided into again gummed paper and oilpaper sleeve pipe.
110kV exchanges above bushing and commonly uses condenser-type terminal, and it mainly improves Electric Field Distribution by capacitor core.Condenser-type terminal is in operation and is subject to the synergy of electricity, heat, mechanical stress and environment, usually because in manufacture process, cable paper drying is insufficient, flanging effect is bad, roll pretightning force deficiency make the implicit defect in fuse inside, if do not monitor out the sleeve pipe of band defect in delivery test and equipment commissioning test, after coming into operation, very easily cause sleeve pipe fuse internal discharge even explosion accident.Current sleeve pipe delivery test and routine test mainly adopt traditional Partial Discharge Detection and dielectric loss measurement to the monitoring and diagnosis of sleeve pipe, not high to the diagnosis accuracy of inner latency defect.
In general, the design of capacitor casing insulation defect mainly comprises to make moist defect model to make moist defect, capacitor core last layer of bottom offset defect, the capacitor core first floor based on stratum disjunction, obtaining inside pipe casing defect to the impact of former Electric Field Distribution, is one of important means analyzing sleeve pipe insulation defect discharge process.In the method for designing of current published sleeve pipe insulation defect, seldom have and consider the impact of insulation defect on former electric field distortion degree.In actual tests process, it is too serious that insulation defect model causes field intensity to distort, and test model can be made to puncture at short notice, well can not observe the evolution that insulation defect discharges.And insulation defect model causes field intensity distortion low effort, can make in pressing time long, test difficulty and cost are difficult to bear.
Summary of the invention
Given this, the object of the invention is to the shortcoming overcoming prior art, there is provided a kind of and can consider the condenser-type terminal insulation defect method for designing of insulation defect on the impact of former electric field distortion degree, by the physical attribute of adjustment condenser-type terminal model, weigh the capacitance profile of condenser-type terminal and electric field distortion degree, thus the electric discharge Analysis on development caused for condenser-type terminal insulation defect provides basis.
In order to realize this object, the technical scheme that the present invention takes is as follows.
A kind of condenser-type terminal insulation defect method for designing, comprises step:
A, set up condenser-type terminal normal model, determine the Electric Field Distribution of condenser-type terminal normal model, extract the field intensity maximal value of condenser-type terminal normal model;
The physical attribute of B, adjustment condenser-type terminal normal model is to set up condenser-type terminal insulation defect model;
C, determine the Electric Field Distribution of condenser-type terminal insulation defect model, extract the field intensity maximal value of insulation defect model, according to the field intensity maximal value of condenser-type terminal normal model and the field intensity maximal value of insulation defect model, determine maximum field strength distortion multiple;
If D described maximum field strength distortion multiple is less than the first predetermined threshold, or maximum field strength distortion multiple is greater than the second predetermined threshold, then adjust the physical attribute of insulation defect model, redefine maximum field strength distortion multiple, until maximum field strength distortion multiple is between the first predetermined threshold and the second predetermined threshold.
Wherein said first predetermined threshold is the 1.1, second predetermined threshold is 1.2.
In addition, the physical attribute of described insulation defect model is the length of stratum disjunction to bottom offset this layer of pole plate, correspondingly,
When described maximum field strength distortion multiple is less than the first predetermined threshold, increase the length of stratum disjunction to bottom offset this layer of pole plate;
When described maximum field strength distortion multiple is greater than the second predetermined threshold, reduce the length of stratum disjunction to bottom offset this layer of pole plate.
Or the physical attribute of described insulation defect model is that capacitor core makes moist the water percentage of the first floor, correspondingly,
When described maximum field strength distortion multiple is less than the first predetermined threshold, increases capacitor core and to make moist the water percentage of the first floor;
When described maximum field strength distortion multiple is greater than the second predetermined threshold, reduces capacitor core and to make moist the water percentage of the first floor.
Or the physical attribute of described insulation defect model is that capacitor core makes moist the water percentage of last layer, correspondingly,
When described maximum field strength distortion multiple is less than the first predetermined threshold, increases capacitor core and to make moist the water percentage of last layer;
When described maximum field strength distortion multiple is greater than the second predetermined threshold, reduces capacitor core and to make moist the water percentage of last layer.
After step D, comprise further:
E, for stratum disjunction to bottom offset defect, when differ with maximal value that field strength distribution volume within 5% exceedes described stratum disjunction volume 10%, be then defined as reasonable insulation defect.
Or after step D, comprise further:
E, defect of making moist for the capacitor core first floor or capacitor core last layer are made moist defect, and when making moist, defect volume exceedes 15% of capacitor core volume, be then defined as reasonable insulation defect.
Especially, described condenser-type terminal normal model or condenser-type terminal insulation defect model comprise capacitor core, centre pilot, dipping, flange and overcoat, adopt the Electric Field Distribution of analysis of finite element method condenser-type terminal normal model or condenser-type terminal insulation defect model, wherein the stress and strain model precision of condenser-type terminal normal model or condenser-type terminal insulation defect model is 0.001mm.
A kind of condenser-type terminal insulation defect design apparatus, comprises normal model analytic unit, unit is set up by insulation defect model, insulation defect model analysis unit and insulation defect model adjustment unit, wherein,
Normal model analytic unit is used for setting up condenser-type terminal normal model, determines the Electric Field Distribution of condenser-type terminal normal model, extracts the field intensity maximal value of condenser-type terminal normal model;
Insulation defect model sets up unit for adjusting the physical attribute of condenser-type terminal normal model to set up condenser-type terminal insulation defect model;
Insulation defect model analysis unit is for determining the Electric Field Distribution of condenser-type terminal insulation defect model, extract the field intensity maximal value of insulation defect model, according to the field intensity maximal value of condenser-type terminal normal model and the field intensity maximal value of insulation defect model, determine maximum field strength distortion multiple;
Insulation defect model adjustment unit, for being less than the first predetermined threshold when described maximum field strength distortion multiple, or maximum field strength distortion multiple is when being greater than the second predetermined threshold, the physical attribute of adjustment insulation defect model, redefine maximum field strength distortion multiple, until maximum field strength distortion multiple is between the first predetermined threshold and the second predetermined threshold.
By adopting condenser-type terminal insulation defect method for designing of the present invention, distribute controlled, parameter of the insulation defect model Electric field of condenser-type terminal can be made to be convenient to adjustment, good with the actual conditions goodness of fit; Conveniently for the electric discharge Analysis on development that condenser-type terminal insulation defect causes, thus efficient diagnostic method can be provided for seeking Exemplary insulative defect.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of condenser-type terminal insulation defect method for designing in embodiment of the present invention.
Fig. 2 is the Electric Field Distribution schematic diagram of condenser-type terminal normal model in embodiment of the present invention.
Fig. 3 be in embodiment of the present invention condenser-type terminal generation stratum disjunction to Electric Field Distribution schematic diagram during bottom offset defect.
Fig. 4 be in embodiment of the present invention the condenser-type terminal generation capacitor core first floor make moist defect time Electric Field Distribution schematic diagram.
Fig. 5 be in embodiment of the present invention condenser-type terminal generation capacitor core last layer make moist defect time Electric Field Distribution schematic diagram.
Embodiment
Below in conjunction with accompanying drawing, the present invention is elaborated.
The example embodiment that following discloses are detailed.But concrete structure disclosed herein and function detail are only the objects for describing example embodiment.
But should be appreciated that, the present invention is not limited to disclosed concrete example embodiment, but covers all modifications, equivalent and the alternative that fall within the scope of the disclosure.In the description to whole accompanying drawing, identical Reference numeral represents identical element.
Should be appreciated that, term "and/or" as used in this comprises one or morely relevant lists any of item and all combinations simultaneously.Should be appreciated that in addition, when parts or unit are called as " connection " or " coupling " to another parts or unit, it can be directly connected or coupled to miscellaneous part or unit, or also can there is intermediate member or unit.In addition, other words being used for describing relation between parts or unit should be understood according to identical mode (such as, " between " to " directly ", " adjacent " to " direct neighbor " etc.).
As shown in Figure 1, in embodiment of the present invention, condenser-type terminal insulation defect method for designing comprises the following steps:
A, set up condenser-type terminal normal model, determine the Electric Field Distribution of condenser-type terminal normal model, extract the field intensity maximal value of condenser-type terminal normal model;
The physical attribute of B, adjustment condenser-type terminal normal model is to set up condenser-type terminal insulation defect model;
C, determine the Electric Field Distribution of condenser-type terminal insulation defect model, extract the field intensity maximal value of insulation defect model, according to the field intensity maximal value of condenser-type terminal normal model and the field intensity maximal value of insulation defect model, determine maximum field strength distortion multiple;
If D described maximum field strength distortion multiple is less than the first predetermined threshold, or maximum field strength distortion multiple is greater than the second predetermined threshold, then adjust the physical attribute of insulation defect model, redefine maximum field strength distortion multiple, until maximum field strength distortion multiple is between the first predetermined threshold and the second predetermined threshold.
Condenser-type terminal comprises multilayer in general, the material of the number of plies and each layer is different as the case may be, such as in an embodiment, described condenser-type terminal normal model or condenser-type terminal insulation defect model comprise capacitor core, centre pilot, dipping, flange and overcoat.In a specific embodiment, the geometric parameter value of described each layer is as following table:
The Electric Field Distribution of analysis of finite element method condenser-type terminal normal model or condenser-type terminal insulation defect model is adopted in the present invention, there is multiple finite element analysis software in the market, such as Ansys, ABAQUS, LS-DYNA, ADINA, COMSOL etc., adopt Ansys to analyze Electric Field Distribution in embodiment of the present invention, but this does not mean that condenser-type terminal insulation defect method for designing of the present invention is only limited to adopt and obtains Electric Field Distribution in this way, but can arbitrarily adopt finite element software to realize.
After utilizing finite element software to carry out Geometric Modeling, carry out physical parameter assignment and stress and strain model, such as, the stress and strain model precision of condenser-type terminal normal model or condenser-type terminal insulation defect model is defined as 0.001mm.In general, the overstocked then calculated amount of stress and strain model is large, crosses and slightly then adds analytical error.
In addition, finite element analysis needs the physical parameter of Confirming model, and in an embodiment, the physical parameter of various material is as shown in the table:
In addition, finite element analysis also needs the external condition of Confirming model, in an embodiment, after stress and strain model completes, needs the stress and strain model removing conducting rod and flange metal position; Next voltage couples is carried out to the 2nd, 3,4,5 layer of pole plate of floating potential, make the current potential of pole plate keep equal; Load 23kV voltage at guide rod place, load zero potential on end shield, flange and field domain border.
Next determine the Electric Field Distribution of condenser-type terminal normal model, extract the field intensity maximal value of condenser-type terminal normal model.In embodiments of the present invention, as shown in Figure 2, under the Parameter Conditions of aforementioned exemplary, field intensity maximal value is 5219.82 volts/rice to the Electric Field Distribution of condenser-type terminal normal model.
Next carry out step B, the physical attribute of adjustment condenser-type terminal normal model is to set up condenser-type terminal insulation defect model.
In embodiments of the present invention, described insulation defect comprises stratum disjunction and to make moist defect to make moist defect or capacitor core last layer of bottom offset defect, the capacitor core first floor.Correspondingly, the physical attribute of stratum disjunction to bottom offset defect is adjusted to increase or reduces the length of stratum disjunction to bottom offset this layer of pole plate, such as, to bottom offset is this layer of pole plate length 10%; To make moist defect for make moist defect or capacitor core last layer of the capacitor core first floor, physical attribute is adjusted to and increases or reduce capacitor core and to make moist the water percentage of the first floor or last layer of making moist, and such as water percentage is 3%, 5% or 7%.
Illustrate in Fig. 3 and stratum disjunction has occurred to Electric Field Distribution during bottom offset defect, to have illustrated in Fig. 4 occur the capacitor core first floor make moist defect time Electric Field Distribution, to illustrate in Fig. 5 that capacitor core last layer occurs makes moist the Electric Field Distribution of defect, as can be seen from the figure, under various defect situation, electric field all there occurs distortion, all adds during field intensity maximal value ratio capacitance formula sleeve pipe normal model.
Therefore, judge that condenser-type terminal insulation defect model is whether reasonable, should compare the field intensity maximal value of condenser-type terminal insulation defect model whether in a zone of reasonableness, this zone of reasonableness determines according to practice and system requirements.Such as in an embodiment, according to the field intensity maximal value of condenser-type terminal normal model and the field intensity maximal value of insulation defect model, determine maximum field strength distortion multiple.
Correspondingly, described zone of reasonableness is that maximum field strength distortion multiple should be greater than the first predetermined threshold and be less than the second predetermined threshold, if namely described maximum field strength distortion multiple is less than the first predetermined threshold, or maximum field strength distortion multiple is greater than the second predetermined threshold, then adjust the physical attribute of insulation defect model, redefine maximum field strength distortion multiple, until maximum field strength distortion multiple is between the first predetermined threshold and the second predetermined threshold.
In an embodiment, described first predetermined threshold is the 1.1, second predetermined threshold is 1.2.Namely the field intensity maximal value of condenser-type terminal insulation defect model should between 1.1 times-1.2 times of the field intensity maximal value of condenser-type terminal normal model.
Comprise stratum disjunction for insulation defect in embodiment of the present invention to make moist the situations such as defect to make moist defect or capacitor core last layer of bottom offset defect, the capacitor core first floor, in all cases, if when maximum field strength distortion multiple is not between the first predetermined threshold and the second predetermined threshold, should according to the physical attribute of following manner adjustment model.
When insulation defect be stratum disjunction to bottom offset defect time, the physical attribute of the insulation defect model of described adjustment is the length of stratum disjunction to bottom offset this layer of pole plate, correspondingly,
When described maximum field strength distortion multiple is less than the first predetermined threshold (1.1), increase the length of stratum disjunction to bottom offset this layer of pole plate;
When described maximum field strength distortion multiple is greater than the second predetermined threshold (1.2), reduce the length of stratum disjunction to bottom offset this layer of pole plate.
When insulation defect be the capacitor core first floor make moist defect time, the physical attribute of the insulation defect model of described adjustment is that capacitor core makes moist the water percentage of the first floor, correspondingly,
When described maximum field strength distortion multiple is less than the first predetermined threshold (1.1), increases capacitor core and to make moist the water percentage of the first floor;
When described maximum field strength distortion multiple is greater than the second predetermined threshold (1.2), reduces capacitor core and to make moist the water percentage of the first floor.
When insulation defect be capacitor core last layer make moist defect time, the physical attribute of the insulation defect model of described adjustment is that capacitor core makes moist the water percentage of last layer, correspondingly,
When described maximum field strength distortion multiple is less than the first predetermined threshold (1.1), increases capacitor core and to make moist the water percentage of last layer;
When described maximum field strength distortion multiple is greater than the second predetermined threshold (1.2), reduces capacitor core and to make moist the water percentage of last layer.
Specifically, the water percentage meeting material adjusting the capacitor core first floor or last layer causes the change of specific inductive capacity.Such as in an embodiment, under several typical water percentage condition, the specific inductive capacity of oil-paper is as shown in the table.
After the step D of the embodiment of the invention, also comprise further:
E, for stratum disjunction to bottom offset defect, when differ with maximal value that field strength distribution volume within 5% exceedes described stratum disjunction volume 10%, be then defined as reasonable insulation defect.
Or after the step D of another embodiment of the present invention, also comprise further:
E, defect of making moist for the capacitor core first floor or capacitor core last layer are made moist defect, and when making moist, defect volume exceedes 15% of capacitor core volume, be then defined as reasonable insulation defect.
In order to realize condenser-type terminal insulation defect method for designing of the present invention, a kind of condenser-type terminal insulation defect design apparatus is also comprised in embodiment of the present invention, described condenser-type terminal insulation defect design apparatus comprises normal model analytic unit, unit set up by insulation defect model, insulation defect model analysis unit and insulation defect model adjustment unit, wherein:
Normal model analytic unit is used for setting up condenser-type terminal normal model, determines the Electric Field Distribution of condenser-type terminal normal model, extracts the field intensity maximal value of condenser-type terminal normal model;
Insulation defect model sets up unit for adjusting the physical attribute of condenser-type terminal normal model to set up condenser-type terminal insulation defect model;
Insulation defect model analysis unit is for determining the Electric Field Distribution of condenser-type terminal insulation defect model, extract the field intensity maximal value of insulation defect model, according to the field intensity maximal value of condenser-type terminal normal model and the field intensity maximal value of insulation defect model, determine maximum field strength distortion multiple;
Insulation defect model adjustment unit, for being less than the first predetermined threshold when described maximum field strength distortion multiple, or maximum field strength distortion multiple is when being greater than the second predetermined threshold, the physical attribute of adjustment insulation defect model, redefine maximum field strength distortion multiple, until maximum field strength distortion multiple is between the first predetermined threshold and the second predetermined threshold.
Thus, by adopting condenser-type terminal insulation defect method for designing of the present invention and device, distribute controlled, parameter of the insulation defect model Electric field of condenser-type terminal can be made to be convenient to adjustment, good with the actual conditions goodness of fit; Conveniently for the electric discharge Analysis on development that condenser-type terminal insulation defect causes, thus efficient diagnostic method can be provided for seeking Exemplary insulative defect.
It should be noted that; above-mentioned embodiment is only the present invention's preferably embodiment; can not limiting the scope of the invention be understood as, not depart under concept thereof of the present invention, all protection scope of the present invention is belonged to modification to any subtle change that the present invention does.
Claims (9)
1. a condenser-type terminal insulation defect method for designing, comprises step:
A, set up condenser-type terminal normal model, determine the Electric Field Distribution of condenser-type terminal normal model, extract the field intensity maximal value of condenser-type terminal normal model;
The physical attribute of B, adjustment condenser-type terminal normal model is to set up condenser-type terminal insulation defect model;
C, determine the Electric Field Distribution of condenser-type terminal insulation defect model, extract the field intensity maximal value of insulation defect model, according to the field intensity maximal value of condenser-type terminal normal model and the field intensity maximal value of insulation defect model, determine maximum field strength distortion multiple;
If D described maximum field strength distortion multiple is less than the first predetermined threshold, or maximum field strength distortion multiple is greater than the second predetermined threshold, then adjust the physical attribute of insulation defect model, redefine maximum field strength distortion multiple, until maximum field strength distortion multiple is between the first predetermined threshold and the second predetermined threshold.
2. according to the condenser-type terminal insulation defect method for designing described in claim 1, it is characterized in that, described first predetermined threshold is the 1.1, second predetermined threshold is 1.2.
3. according to the condenser-type terminal insulation defect method for designing described in claim 1, it is characterized in that, the physical attribute of described insulation defect model is the length of stratum disjunction to bottom offset this layer of pole plate, correspondingly,
When described maximum field strength distortion multiple is less than the first predetermined threshold, increase the length of stratum disjunction to bottom offset this layer of pole plate;
When described maximum field strength distortion multiple is greater than the second predetermined threshold, reduce the length of stratum disjunction to bottom offset this layer of pole plate.
4. according to the condenser-type terminal insulation defect method for designing described in claim 1, it is characterized in that, the physical attribute of described insulation defect model is that capacitor core makes moist the water percentage of the first floor, correspondingly,
When described maximum field strength distortion multiple is less than the first predetermined threshold, increases capacitor core and to make moist the water percentage of the first floor;
When described maximum field strength distortion multiple is greater than the second predetermined threshold, reduces capacitor core and to make moist the water percentage of the first floor.
5. according to the condenser-type terminal insulation defect method for designing described in claim 1, it is characterized in that, the physical attribute of described insulation defect model is that capacitor core makes moist the water percentage of last layer, correspondingly,
When described maximum field strength distortion multiple is less than the first predetermined threshold, increases capacitor core and to make moist the water percentage of last layer;
When described maximum field strength distortion multiple is greater than the second predetermined threshold, reduces capacitor core and to make moist the water percentage of last layer.
6., according to the condenser-type terminal insulation defect method for designing described in claim 3, it is characterized in that, after step D, comprise further:
E, for stratum disjunction to bottom offset defect, when differ with maximal value that field strength distribution volume within 5% exceedes described stratum disjunction volume 10%, be then defined as reasonable insulation defect.
7. the condenser-type terminal insulation defect method for designing according to any one of claim 4 or 5, is characterized in that, after step D, comprise further:
E, defect of making moist for the capacitor core first floor or capacitor core last layer are made moist defect, and when making moist, defect volume exceedes 15% of capacitor core volume, be then defined as reasonable insulation defect.
8. according to the condenser-type terminal insulation defect method for designing described in claim 1, it is characterized in that, described condenser-type terminal normal model or condenser-type terminal insulation defect model comprise capacitor core, centre pilot, dipping, flange and overcoat, adopt the Electric Field Distribution of analysis of finite element method condenser-type terminal normal model or condenser-type terminal insulation defect model, wherein the stress and strain model precision of condenser-type terminal normal model or condenser-type terminal insulation defect model is 0.001mm.
9. a condenser-type terminal insulation defect design apparatus, comprises normal model analytic unit, unit is set up by insulation defect model, insulation defect model analysis unit and insulation defect model adjustment unit, wherein,
Normal model analytic unit is used for setting up condenser-type terminal normal model, determines the Electric Field Distribution of condenser-type terminal normal model, extracts the field intensity maximal value of condenser-type terminal normal model;
Insulation defect model sets up unit for adjusting the physical attribute of condenser-type terminal normal model to set up condenser-type terminal insulation defect model;
Insulation defect model analysis unit is for determining the Electric Field Distribution of condenser-type terminal insulation defect model, extract the field intensity maximal value of insulation defect model, according to the field intensity maximal value of condenser-type terminal normal model and the field intensity maximal value of insulation defect model, determine maximum field strength distortion multiple;
Insulation defect model adjustment unit, for being less than the first predetermined threshold when described maximum field strength distortion multiple, or maximum field strength distortion multiple is when being greater than the second predetermined threshold, the physical attribute of adjustment insulation defect model, redefine maximum field strength distortion multiple, until maximum field strength distortion multiple is between the first predetermined threshold and the second predetermined threshold.
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| CN201510153046.1A CN104765920B (en) | 2015-04-01 | 2015-04-01 | Condenser-type terminal insulation defect design method and device |
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| CN201510153046.1A CN104765920B (en) | 2015-04-01 | 2015-04-01 | Condenser-type terminal insulation defect design method and device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106054047A (en) * | 2016-08-18 | 2016-10-26 | 广东电网有限责任公司电力科学研究院 | Insulation breakdown development characteristic test method and fault diagnosis method of sleeve |
| CN107085645A (en) * | 2017-04-28 | 2017-08-22 | 南方电网科学研究院有限责任公司 | Optimize the method and system of Oil-impregnated Paper Condenser Bushing in History |
| CN112115633A (en) * | 2020-09-18 | 2020-12-22 | 国网天津市电力公司 | Partial discharge simulation method for silicone rubber gap aging process under application of alternating current electric field |
| CN117849560A (en) * | 2024-03-07 | 2024-04-09 | 南京中鑫智电科技有限公司 | Valve side sleeve insulation monitoring method and system combining end screen voltage and partial discharge |
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2015
- 2015-04-01 CN CN201510153046.1A patent/CN104765920B/en not_active Expired - Fee Related
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| 肖朋: ""超高压电力变压器高压引线及套管电场分析"", 《中国优秀硕士学位论文全文数据库》 * |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106054047A (en) * | 2016-08-18 | 2016-10-26 | 广东电网有限责任公司电力科学研究院 | Insulation breakdown development characteristic test method and fault diagnosis method of sleeve |
| CN107085645A (en) * | 2017-04-28 | 2017-08-22 | 南方电网科学研究院有限责任公司 | Optimize the method and system of Oil-impregnated Paper Condenser Bushing in History |
| CN112115633A (en) * | 2020-09-18 | 2020-12-22 | 国网天津市电力公司 | Partial discharge simulation method for silicone rubber gap aging process under application of alternating current electric field |
| CN117849560A (en) * | 2024-03-07 | 2024-04-09 | 南京中鑫智电科技有限公司 | Valve side sleeve insulation monitoring method and system combining end screen voltage and partial discharge |
| CN117849560B (en) * | 2024-03-07 | 2024-05-28 | 南京中鑫智电科技有限公司 | Valve side sleeve insulation monitoring method and system combining end screen voltage and partial discharge |
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| Publication number | Publication date |
|---|---|
| CN104765920B (en) | 2018-04-10 |
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