CN109992851A - A kind of dielectric constant distribution optimization method of GIS functionally gradient insulator - Google Patents
A kind of dielectric constant distribution optimization method of GIS functionally gradient insulator Download PDFInfo
- Publication number
- CN109992851A CN109992851A CN201910199926.0A CN201910199926A CN109992851A CN 109992851 A CN109992851 A CN 109992851A CN 201910199926 A CN201910199926 A CN 201910199926A CN 109992851 A CN109992851 A CN 109992851A
- Authority
- CN
- China
- Prior art keywords
- insulator
- dielectric constant
- distribution
- gis
- coefficient
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000012212 insulator Substances 0.000 title claims abstract description 64
- 238000009826 distribution Methods 0.000 title claims abstract description 44
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000005457 optimization Methods 0.000 title claims abstract description 21
- 238000004364 calculation method Methods 0.000 claims abstract description 14
- 230000005684 electric field Effects 0.000 claims abstract description 8
- 238000012804 iterative process Methods 0.000 claims description 6
- 230000000638 stimulation Effects 0.000 claims description 3
- 238000000265 homogenisation Methods 0.000 abstract description 3
- 238000013461 design Methods 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 238000010146 3D printing Methods 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004422 calculation algorithm Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
- G06F30/23—Design optimisation, verification or simulation using finite element methods [FEM] or finite difference methods [FDM]
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/42—Means for obtaining improved distribution of voltage; Protection against arc discharges
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Power Engineering (AREA)
- Computer Hardware Design (AREA)
- Evolutionary Computation (AREA)
- Geometry (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Insulators (AREA)
Abstract
The present invention discloses a kind of dielectric constant distribution optimization method of GIS functionally gradient insulator, using GIS supporting insulator as Optimized model, is optimized using the gradient distribution for carrying out dielectric constant as direction (z-axis) from the high-field electrode of insulator to ground electrode and calculated.By insulator along face field distribution homogenization for the purpose of, the optimization gradient distribution of the dielectric constant of insulator obtained using the method for iterative calculation.The iteration variable of iterative calculation is the permittivity ε of regulation coefficient k (z) and insulatorr(z)；Nonuniformity coefficient f of the iteration ending-criterion for insulator along face field distribution is less than preset electric field nonuniformity coefficient f0.The present invention has important theoretical value and engineering significance to the safety of the operation stability and electric system that improve GIS.
Description
Technical field
The invention belongs to modified polymeric material and its preparation fields in high voltage installation manufacture, and it is diligent to be related to a kind of GIS
The dielectric constant distribution optimization method of energy gradient insulator.
Background technique
In recent years, gas-insulated metal-enclosed system (Gas Insulated System, GIS) relies on high reliablity, accounts for
The advantages that ground area is small, maintenance workload is small becomes the important directions of electric power development.Wherein, consolidating for insulating supporting is provided for GIS
The performance superiority and inferiority of body insulator plays conclusive key effect to the safe and stable operation of entire power grid.However, even if in matter
It measures in harsh 1000kV AC extra high voltage engineering, epoxy casting class insulator remains unchanged Frequent Troubles, wherein edge flashing failure
It is key problem.
It is generally believed that it is the major reason for leading to arcing fault that internal field is excessively high.By the functionally gradient in materialogy field
Material (Functionally GradedMaterial, FGM) concept is applied to electric insulation field, constructs relative dielectric constant
The insulator of gradient distribution regulates and controls the field distribution under exchange, to alleviate, internal field is excessively high, improves insulator
Flashover voltage.In recent years, domestic and foreign scholars have used the technologies such as lay-up method, centrifugal process and 3D printing successfully to prepare function ladder
Insulator is spent, and studies maximum field intensity at three binding sites of discovery and is effectively reduced, flashover voltage is significantly improved.However,
The dielectric constant of prepared functionally gradient insulator, which is distributed, at present is not yet designed optimization, and existing some algorithm for designs
Validity and universality there are some problems.Iterative calculation proposed by the present invention is to solve the dielectric of functionally gradient insulator
Constant distribution optimization provides a kind of simple, effective method.
Summary of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of GIS dielectrics of functionally gradient insulator
Constant distribution optimization method.By the dielectric constant distribution of the method design optimization functionally gradient insulator of iterative calculation, in turn
Flexible modulation insulator improves the electric durability energy of GIS insulator along the field distribution in face.
Technical scheme is as follows: a kind of dielectric constant distribution optimization method of GIS functionally gradient insulator, with
GIS is Optimized model with supporting insulator, to carry out dielectric constant from the high-field electrode of insulator to ground electrode as direction (z-axis)
Gradient distribution optimize calculate.
The present invention by insulator along face field distribution homogenization for the purpose of, insulator obtained using the method for iterative calculation
Dielectric constant optimization gradient distribution.
The iteration variable that the present invention iterates to calculate is the permittivity ε of regulation coefficient k (z) and insulatorr(z)；Iteration knot
Nonuniformity coefficient f of the beam criterion for insulator along face field distribution is less than preset electric field nonuniformity coefficient f0。
Iterative process of the present invention is as follows:
1) expected insulator is set along face non-uniform electric coefficient f0And the dielectric of initial homogeneous insulator is normal
Numerical value εr(z)；
2) by finite element stimulation obtain insulator along face field distribution E (z)；
3) calculate insulator along face electric field nonuniformity coefficientWherein EmaxIt is strong for the maximum field in E (z)
Degree, unit kV/mm；EavFor the average field intensity of E (z), unit kV/mm；
4) judge f < f0It is whether true? if so, the dielectric constant distribution ε then optimizedr(z)；If not, then count
Calculate regulation coefficientAnd dielectric constant values ε is updated using regulation coefficient k (z)r(z)=k (z) εr(z), from step
(2) it recycles；
5) iterative process terminates.
Beneficial effect
The present invention is based on GIS functionally gradient supporting insulators, optimize dielectric constant gradient with the method for iterative calculation
Distribution, and then achieve the purpose that be homogenized Spacer Under AC Voltage along face electric field and promote insulation system electric durability energy.Therefore this hair
The bright safety to the operation stability and electric system that improve GIS has important theoretical value and engineering significance.
Detailed description of the invention
Fig. 1 is the epoxy resin support insulator of the simplification for simulation calculation.
Fig. 2 is the iterative calculation flow chart being distributed for the dielectric constant of insulator.
Fig. 3 is the insulator under different the number of iterations along face field distribution.
Fig. 4 is the dielectric constant gradient distribution of the insulator under different the number of iterations.
Specific embodiment
Below by specific embodiments and the drawings, the present invention is further illustrated.The embodiment of the present invention is in order to more
So that those skilled in the art is more fully understood the present invention well, any limitation is not made to the present invention.
A kind of dielectric constant distribution optimization method of GIS functionally gradient insulator, it is characterised in that: with GIS support
Insulator is Optimized model, using the gradient point for carrying out dielectric constant as direction (z-axis) from the high-field electrode of insulator to ground electrode
Cloth optimization calculates；By insulator along face field distribution homogenization for the purpose of, insulator obtained using the method for iterative calculation
The optimization gradient distribution of dielectric constant；The iteration variable of iterative calculation is the permittivity ε of regulation coefficient k (z) and insulatorr
(z)；Nonuniformity coefficient f of the iteration ending-criterion for insulator along face field distribution is less than preset electric field nonuniformity coefficient f0。
Specific iterative process is as follows:
1) expected insulator is set along face non-uniform electric coefficient f0=1.001 and initial homogeneous insulator
Dielectric constant values εr(z)=4.
2) by finite element stimulation obtain insulator along face field distribution E (z).
3) calculate insulator along face electric field nonuniformity coefficientWherein EmaxIt is strong for the maximum field in E (z)
Degree, unit kV/mm；EavFor the average field intensity of E (z), unit kV/mm.
4) judge f < f0It is whether true? if so, the dielectric constant distribution ε then optimizedr(z)；If not, then count
Calculate regulation coefficientAnd dielectric constant values ε is updated using regulation coefficient k (z)r(z)=k (z) εr(z), from step
(2) it recycles.
5) iterative process terminates.
Fig. 1 is the epoxy resin support insulator of the simplification for simulation calculation.
Fig. 2 is the iterative calculation flow chart being distributed for the dielectric constant of insulator.
Fig. 3 is the insulator under different the number of iterations along face field distribution.As seen from the figure, as the number of iterations increases,
Along face, field distribution is more and more uniform, finally tends towards stability.
Fig. 4 is the dielectric constant gradient distribution of the insulator under different the number of iterations.As seen from the figure, as the number of iterations increases
Add, the distribution of insulator dielectric constant constantly changes and is finally reached optimization distribution.
It should be understood that embodiment and example discussed herein simply to illustrate that, to those skilled in the art
For, it can be improved or converted, and all these modifications and variations all should belong to the protection of appended claims of the present invention
Range.
Claims (4)
1. a kind of dielectric constant distribution optimization method of GIS functionally gradient insulator, it is characterised in that: exhausted with support with GIS
Edge is Optimized model, using the gradient distribution for carrying out dielectric constant as direction (z-axis) from the high-field electrode of insulator to ground electrode
Optimization calculates.
2. a kind of dielectric constant distribution optimization method of GIS according to claim 1 functionally gradient insulator, feature
It is: obtains the optimization gradient distribution of the dielectric constant of insulator with the method for iterative calculation.
3. a kind of dielectric constant distribution optimization method of GIS according to claim 1 functionally gradient insulator, feature
Be: the iteration variable of iterative calculation is the permittivity ε of regulation coefficient k (z) and insulatorr(z)；Iteration ending-criterion is exhausted
Edge is less than preset electric field nonuniformity coefficient f along the nonuniformity coefficient f of face field distribution0。
4. a kind of dielectric constant distribution optimization of GIS functionally gradient insulator according to any one of claim 2 to 3
Method, which is characterized in that iterative process is as follows:
1) expected insulator is set along face non-uniform electric coefficient f0And the dielectric constant values ε of initial homogeneous insulatorr
(z)；
2) by finite element stimulation obtain insulator along face field distribution E (z)；
3) calculate insulator along face electric field nonuniformity coefficientWherein EmaxIt is single for the maximum field intensity in E (z)
Position is kV/mm；EavFor the average field intensity of E (z), unit kV/mm；
4) judge f < f0It is whether true? if so, the dielectric constant distribution ε then optimizedr(z)；If not, then calculate tune
Integral coefficientAnd dielectric constant values ε is updated using regulation coefficient k (z)r(z)=k (z) εr(z), from step (2)
Circulation；
5) iterative process terminates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910199926.0A CN109992851A (en) | 2019-03-15 | 2019-03-15 | A kind of dielectric constant distribution optimization method of GIS functionally gradient insulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910199926.0A CN109992851A (en) | 2019-03-15 | 2019-03-15 | A kind of dielectric constant distribution optimization method of GIS functionally gradient insulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109992851A true CN109992851A (en) | 2019-07-09 |
Family
ID=67130641
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910199926.0A Pending CN109992851A (en) | 2019-03-15 | 2019-03-15 | A kind of dielectric constant distribution optimization method of GIS functionally gradient insulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109992851A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111180150A (en) * | 2020-01-03 | 2020-05-19 | 天津大学 | Preparation method of nonlinear insulator with optimized surface conductance |
| CN111460642A (en) * | 2020-03-25 | 2020-07-28 | 天津大学 | High-voltage GI L gas-solid interface electric field distribution optimization method |
| CN111553089A (en) * | 2020-05-07 | 2020-08-18 | 西安交通大学 | Multi-level optimization design method for GIS/GIL basin-type insulator with high power-resisting performance |
| CN111709165A (en) * | 2020-05-21 | 2020-09-25 | 天津大学 | Parameter optimization method for surface functional gradient cable accessory |
| CN113470907A (en) * | 2021-06-23 | 2021-10-01 | 西安交通大学 | Method for inhibiting partial discharge at flange of GIS/GIL supporting insulator |
| CN114188108A (en) * | 2021-10-25 | 2022-03-15 | 西安交通大学 | Insulator and method for improving electric strength of vacuum edge surface of insulator |
| CN115358131A (en) * | 2022-10-19 | 2022-11-18 | 广东电网有限责任公司 | Insulator design method, device, storage medium and system |
| CN115408965A (en) * | 2022-10-31 | 2022-11-29 | 西安交通大学 | High-power chip insulation packaging local field intensity optimization method and device |
| CN116936009A (en) * | 2023-09-13 | 2023-10-24 | 国网山东省电力公司东营供电公司 | Electric field distribution regulation and control method and system for high-voltage insulating dielectric functionally-graded material |
| CN117059212A (en) * | 2023-10-11 | 2023-11-14 | 国网山东省电力公司东营供电公司 | Method and system for optimizing dielectric constant distribution of functionally-graded insulating partition plate |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108447631A (en) * | 2018-03-16 | 2018-08-24 | 天津大学 | GIS insulator design methods with the U-shaped gradient distribution of two-dimentional dielectric constant |
-
2019
- 2019-03-15 CN CN201910199926.0A patent/CN109992851A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108447631A (en) * | 2018-03-16 | 2018-08-24 | 天津大学 | GIS insulator design methods with the U-shaped gradient distribution of two-dimentional dielectric constant |
Non-Patent Citations (2)
| Title |
|---|
| 孙秋芹等: "基于介电功能梯度材料的盆式绝缘子电场分布优化", 《湖南大学学报(自然科学版)》 * |
| 李文栋等: "叠层式介电功能梯度绝缘子的介电常数分布优化", 《西安交通大学学报》 * |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111180150A (en) * | 2020-01-03 | 2020-05-19 | 天津大学 | Preparation method of nonlinear insulator with optimized surface conductance |
| CN111460642A (en) * | 2020-03-25 | 2020-07-28 | 天津大学 | High-voltage GI L gas-solid interface electric field distribution optimization method |
| CN111460642B (en) * | 2020-03-25 | 2022-07-01 | 天津大学 | High-voltage GIL gas-solid interface electric field distribution optimization method |
| CN111553089A (en) * | 2020-05-07 | 2020-08-18 | 西安交通大学 | Multi-level optimization design method for GIS/GIL basin-type insulator with high power-resisting performance |
| CN111709165B (en) * | 2020-05-21 | 2022-05-13 | 天津大学 | Parameter optimization method for surface functional gradient cable accessory |
| CN111709165A (en) * | 2020-05-21 | 2020-09-25 | 天津大学 | Parameter optimization method for surface functional gradient cable accessory |
| CN113470907B (en) * | 2021-06-23 | 2022-07-12 | 西安交通大学 | Method for inhibiting partial discharge at flange of GIS/GIL supporting insulator |
| CN113470907A (en) * | 2021-06-23 | 2021-10-01 | 西安交通大学 | Method for inhibiting partial discharge at flange of GIS/GIL supporting insulator |
| CN114188108A (en) * | 2021-10-25 | 2022-03-15 | 西安交通大学 | Insulator and method for improving electric strength of vacuum edge surface of insulator |
| CN114188108B (en) * | 2021-10-25 | 2022-08-26 | 西安交通大学 | Insulator and method for improving electric strength of vacuum edge surface of insulator |
| CN115358131A (en) * | 2022-10-19 | 2022-11-18 | 广东电网有限责任公司 | Insulator design method, device, storage medium and system |
| CN115408965A (en) * | 2022-10-31 | 2022-11-29 | 西安交通大学 | High-power chip insulation packaging local field intensity optimization method and device |
| CN115408965B (en) * | 2022-10-31 | 2023-02-03 | 西安交通大学 | High-power chip insulation packaging local field intensity optimization method and device |
| CN116936009A (en) * | 2023-09-13 | 2023-10-24 | 国网山东省电力公司东营供电公司 | Electric field distribution regulation and control method and system for high-voltage insulating dielectric functionally-graded material |
| CN116936009B (en) * | 2023-09-13 | 2023-11-28 | 国网山东省电力公司东营供电公司 | Electric field distribution regulation and control method and system for high-voltage insulating dielectric functionally-graded material |
| CN117059212A (en) * | 2023-10-11 | 2023-11-14 | 国网山东省电力公司东营供电公司 | Method and system for optimizing dielectric constant distribution of functionally-graded insulating partition plate |
| CN117059212B (en) * | 2023-10-11 | 2024-01-05 | 国网山东省电力公司东营供电公司 | Method and system for optimizing dielectric constant distribution of functionally-graded insulating partition plate |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109992851A (en) | A kind of dielectric constant distribution optimization method of GIS functionally gradient insulator | |
| Li et al. | Electric field calculation and grading ring optimization of composite insulator for 500kV AC transmission lines | |
| Shu et al. | Three‐dimensional electric field simulation and flashover path analysis of ice‐covered suspension insulators | |
| Jiang et al. | Effect of inverted T arrangement on AC pollution flashover characteristics of insulator strings | |
| Zhang et al. | Optimization of corona ring structure for UHV composite insulator using finite element method and PSO algorithm | |
| CN109494029B (en) | Superconducting GIL insulator electric field homogenization method based on surface gradient conductance | |
| Huang et al. | Electric Field Simulation of a Voltage Graded Type Insulator for DC GIL | |
| CN207116125U (en) | The insulator of Electric Field Distribution near high-field electrode can be improved | |
| CN106446418A (en) | Cable terminal inflow water defect electric-field distribution analysis method and device | |
| Wang et al. | The electric energy loss in overhead ground wires of 110kV six-circuit transmission line on the same tower | |
| CN109858141A (en) | 220kVGIL insulator method for equalizing voltage based on nonlinear conductance epoxy resin | |
| CN204926930U (en) | A runway type equalizer ring for block of four string composite insulator that dangles | |
| CN108875225A (en) | Regulation method for insulator and its surface field in GIS/GIL | |
| Zhang | Research on digital twin virtual model of UHV core power equipment | |
| CN201868164U (en) | Voltage-equalizing ring with inner insulating structure | |
| Zhang | The Electrical and Thermal Multi-Physical Field Simulation of HVDC | |
| Guo et al. | Optimization design on shielding electrodes for PLC reactor in UHV indoor DC yard | |
| Hu et al. | Influence of tower width and ion current on gap flashover characteristics of EHV/UHV AC and DC hybrid transmission lines during live-working | |
| Wu et al. | Calculation of Electric Field and Configuration of Grading Ring for Composite Tower of 500 kV AC Double Circuit Transmission Lines | |
| Wang | Analysis of the Influence of the Number of Split Wires on the UHV Electromagnetic Environment | |
| CN107359022A (en) | The insulator of Electric Field Distribution near high-field electrode can be improved | |
| Wang et al. | Research on the Electromagnetic Characteristics of UHV-VSC Converter Valve | |
| Han et al. | Study on the influence of conductor arrangement on the electromagnetic environment of DC transmission line constructed with AC transmission line in the same transmission line corridor | |
| CN117059212B (en) | Method and system for optimizing dielectric constant distribution of functionally-graded insulating partition plate | |
| CN202600062U (en) | High-voltage heavy-current composite thermal stability testing device for high voltage bushings |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190709 |
|
| WD01 | Invention patent application deemed withdrawn after publication |