CN103258094A - Method of optimizing high-frequency magnetic rings used for restraining very fast transient overvoltage - Google Patents
Method of optimizing high-frequency magnetic rings used for restraining very fast transient overvoltage Download PDFInfo
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Abstract
The invention provides a method of optimizing high-frequency magnetic rings used for restraining very fast transient overvoltage. The method of optimizing the high-frequency magnetic rings used for restraining the very fast transient overvoltage comprises acquiring the structure of installing a gas insulate switchgear (GIS) of the high-frequency magnetic rings and an arrangement condition of electrical equipment in an electric substation with the GIS, confirming a performance index limiting condition of the high-frequency magnetic rings according to the structure of the GIS and the arrangement condition of the electrical equipment, inputting the performance index limiting condition into a pre-built equivalent electromagnetic transient model of the high-frequency magnetic rings, calculating suppression effect of different high-frequency magnetic rings satisfying the performance index limiting condition in a simulating mode on the very fast transient overvoltage through the equivalent electromagnetic transient model, and acquiring an optimized parameter of the high-frequency magnetic rings according to the suppression effect. According to technical scheme of the method of optimizing the high-frequency magnetic rings used for restraining the very fast transient overvoltage, the optimal optimized parameter of the high-frequency magnetic rings is acquired, a predetermined suppression target and the maximum optimized effect of the sizes and the weights of the high-frequency magnetic rings are achieved under a limiting condition, and therefore maximum technology economy is achieved.
Description
Technical field
The present invention relates to the high voltage field, in particular to a kind of optimization method for the high frequency magnet ring that suppresses very fast transient overvoltage.
Background technology
Tsing-Hua University has carried out and utilizes the high frequency magnet ring to suppress fully closed combined electric unit (Gas Insulate Switchgear, hereinafter to be referred as GIS) in very fast transient overvoltage (the Very Fast Transient Overvoltage that produces when suiting unloaded short bus of disconnector, hereinafter to be referred as VFTO) research work, and by a series of evidences validity and the feasibility of this method.Adopt the high frequency magnet ring to suppress VFTO, simple in structure, attonity parts, reliability height, good economy performance.
Following document has been introduced existing some achievements in research that the high frequency magnet ring suppressed VFTO:
Document 1: suppress the method for fully closed combined electric unit very fast transient overvoltage, Chinese patent application, application number is CN00100552.9;
Document 2: the simulating analysis of ferrimagnet in suppressing the application of GIS high frequency transient, Li Qingmin etc., electrotechnics journal, 11 phases in 2005;
Document 3:Simulation Method for the Applications of Ferromagnetic Materials in Suppressing High-Frequency Transients Within GIS, Li Qingmin etc., Power Delivery, IEEE Transactions on, 2007;
Document 4: suppress the ferritic characteristic research of VFTO among the GIS, Gionee army etc., electrotechnics journal, 04 phase in 2006;
Document 5: ferrite bead suppresses the possibility of the VFTO of GIS, Liu Weidong etc., electrotechnics journal, 04 phase in 2002;
Document 6: magnet ring suppresses the simulation test of very fast transient overvoltage in the extra-high voltage GIS equipment, close firm etc. forever, High-Voltage Technology, 03 phase in 2011.
Wherein, document 1 has been introduced magnet ring has been sleeved on principle method on the conducting rod among the GIS, but does not provide the system of selection of magnet ring material.Document 2 and document 3 hypothesis magnet rings do not take place saturated in the process of VFTO effect, namely are operated in linear zone, and only use a linear sense of power transformation frequently to the magnet ring modeling, and therefore the emulated computation method of setting up is not accurate enough.Document 4 has been enumerated the cardinal rule of the selection of magnetic material: saturation magnetic flux density is big, magnetic permeability is high, based on the equivalent model in parallel of linear resistance and linear inductance, has provided under a kind of appointment equivalent parameters condition the approximate calculation method of magnet ring size.But owing to do not consider that high frequency magnetic field is because of eddy effect factor pockety in the magnet ring, the accuracy of its result of calculation is also had a greatly reduced quality.Document 5 and 6 by verification experimental verification magnet ring suppress the feasibility of VFTO, and material and the geometric configuration of having discussed magnet ring have considerable influence to test findings, but do not point out selecting or how to optimize these parameters during the design magnet ring.
Propose to suppress the optimization method of high frequency magnet ring of VFTO in the prior art to satisfy inhibition target and the restrictive condition under the different site environments, do not propose effective solution at present as yet at this problem.
Summary of the invention
The present invention aims to provide a kind of optimization method for the high frequency magnet ring that suppresses very fast transient overvoltage, with the optimization method that solves the high frequency magnet ring that does not suppress VFTO in the prior art to satisfy inhibition target under the different site environments and the problem of restrictive condition.
To achieve these goals, according to an aspect of the present invention, provide a kind of optimization method for the high frequency magnet ring that suppresses very fast transient overvoltage.
The optimization method that should be used for the high frequency magnet ring of inhibition very fast transient overvoltage comprises: obtain the structure of the fully closed combined electric unit GIS that the high frequency magnet ring is installed and the deployment scenarios that transformer station's electrical equipment of GIS is installed; Determine the performance index restrictive condition of high frequency magnet ring according to the deployment scenarios of the structure of GIS and electrical equipment; The performance index restrictive condition is imported the equivalent electromagnetism transient Model of the high frequency magnet ring of setting up in advance; Utilize equivalent electromagnetism transient Model simulation calculation to meet the different high frequency magnet rings of performance index restrictive condition to the inhibition of very fast transient overvoltage; Obtain the optimization parameter of high frequency magnet ring according to inhibition.
Further, the performance index restrictive condition of high frequency magnet ring comprises: the maximum of high frequency magnet ring allows size, the maximal value of high frequency magnet ring weight and the electric parameter allowed band of high frequency magnet ring.
Further, the high frequency magnet ring is composed in series by a plurality of cylindrical shape magnet rings, and the maximum of high frequency magnet ring allows size to comprise: the internal diameter numerical range of the greatest axial length of high frequency magnet ring, cylindrical shape magnet ring and the external diameter numerical range of cylindrical shape magnet ring.
Further, the electric parameter allowed band of high frequency magnet ring comprises: the resistivity value scope of magnetic material and this high frequency magnet ring are to the inhibition requirement of very fast transient overvoltage.
Further, suppress to require to comprise that inhibition to the very fast transient overvoltage amplitude requires and to the inhibition requirement of very fast transient overvoltage wave head steepness.
Further, the equivalent electromagnetism transient Model of the high frequency magnet ring of setting up in advance is: the multiloop equivalence electromagnetism transient Model of setting up in the electromagnetic transient simulation calculation procedure that is made of fixed value resistance and nonlinear inductance.
Further, the optimization parameter that obtains the high frequency magnet ring according to inhibition comprises: the inhibition to different high frequency magnet rings sorts, to pick out the high frequency magnet ring of inhibition optimum; With the parameter of the high frequency magnet ring of inhibition optimum as optimizing parameter.
Further, optimizing parameter comprises: the resistivity of the structure optimization parameter of high frequency magnet ring and high frequency magnet ring magnetic material.
Further, structure optimization parameter comprises: the internal diameter of the weight of magnet ring, the axial length of magnet ring, magnet ring and the external diameter of magnet ring.
Further, after obtaining the optimization parameter of high frequency magnet ring, also comprise: determine the structure and material of high frequency magnet ring according to optimizing parameter.
Use technical scheme of the present invention, physical condition according to the scene, determine the restrictive condition of magnet ring parameter, and in meeting the scope of restrictive condition through simulation calculation, obtain optimum magnet ring and optimize parameter, reached the effect of the largest optimization of magnet ring size and weight under predetermined inhibition target and the restrictive condition, thereby realize maximum Technological Economy, be beneficial to the high frequency magnet ring and suppress applying of VFTO technology, reduce the harm of VFTO, improve security and the reliability of Operation of Electric Systems, this achievement can be applicable in the electric system of the various electric pressures of using GIS equipment.
Description of drawings
The Figure of description that constitutes the application's a part is used to provide further understanding of the present invention, and illustrative examples of the present invention and explanation thereof are used for explaining the present invention, do not constitute improper restriction of the present invention.In the accompanying drawings:
Fig. 1 is the synoptic diagram according to the optimization method of the high frequency magnet ring that is used for the inhibition very fast transient overvoltage of the embodiment of the invention;
Fig. 2 is the structural representation according to the single magnet ring of high frequency magnet ring that is used for the inhibition very fast transient overvoltage of the embodiment of the invention;
Fig. 3 is the oscillogram according to the typical VFTO of the optimization method of the high frequency magnet ring that is used for the inhibition very fast transient overvoltage of the embodiment of the invention;
Fig. 4 is the synoptic diagram according to the multiloop equivalent-circuit model of the medium-high frequency magnet ring of the optimization method of the high frequency magnet ring that is used for the inhibition very fast transient overvoltage of the embodiment of the invention;
Fig. 5 is the shaft section view according to the subdivision subring of the optimization method of the high frequency magnet ring that is used for the inhibition very fast transient overvoltage of the embodiment of the invention, and
Fig. 6 is the process flow diagram of optimum implementation of optimization method of the high frequency magnet ring that be used for to suppress very fast transient overvoltage of the embodiment of the invention.
Embodiment
Need to prove that under the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.Describe the present invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
The basic functional principle of the high frequency magnet ring that is used for the inhibition very fast transient overvoltage that occurs in the embodiment of the invention is that a place or the plurality of positions on the conducting rod of the expert ripple process of metallic conduit of fully closed combined electric unit GIS puts the high frequency magnet ring that one or more magnetic materials are made, in order to change and the wave propagation of damping row.The preferred installation site of this high frequency magnet ring is on the conducting rod of close disconnector or isolating switch.This high frequency magnet ring requires the magnetic material that high frequency response characteristic is better, magnetic permeability is higher and saturation induction density is higher, and general magnetic material comprises ferrite, silicon steel, permalloy etc., and relatively Chang Yong magnet ring material is ferrite.Parameters such as the magnetic permeability of different materials, frequency response characteristic, saturation induction density, density, weight are all influential to the effect that the high frequency magnet ring suppresses VFTO.And because the high frequency magnet ring need be sleeved on the conducting rod of the expert ripple process of the metallic conduit of GIS, so the structure of high frequency magnet ring also is subjected to the influence of GIS device structure.Different electrical equipment is received the difference that influences of VFTO in addition, thus the high frequency magnet ring the influence that requirement also is subjected to other electrical equipment deployment scenarios in the transformer station is set.
In order to make the high frequency magnet ring can satisfy inhibition target under the different site environments, the embodiment of the invention provides a kind of optimization method for the high frequency magnet ring that suppresses very fast transient overvoltage, Fig. 1 is the synoptic diagram according to the optimization method of the high frequency magnet ring that is used for the inhibition very fast transient overvoltage of the embodiment of the invention, as shown in Figure 1, should comprise for the optimization method of the high frequency magnet ring that suppresses VFTO:
Step S11, the deployment scenarios of obtaining the structure of the fully closed combined electric unit GIS that the high frequency magnet ring is installed and electrical equipment in the transformer station of GIS being installed;
Step S13 determines the performance index restrictive condition of high frequency magnet ring according to the deployment scenarios of the structure of GIS and electrical equipment;
Step S15 imports the equivalent electromagnetism transient Model of the high frequency magnet ring of foundation in advance with the performance index restrictive condition;
Step S17 utilizes equivalent electromagnetism transient Model simulation calculation to meet the different high frequency magnet rings of performance index restrictive condition to the inhibition of very fast transient overvoltage;
Step S19 obtains the optimization parameter of high frequency magnet ring according to inhibition.
Because the structure of high frequency magnet ring is subjected to installing the restriction of the GIS structure of this high frequency magnet ring, step S13 utilizes the structure of GIS can obtain the concrete structure restrictive condition of high frequency magnet ring, particularly, this restrictive condition comprises: the maximum of high frequency magnet ring allows the maximal value of size, high frequency magnet ring weight.Wherein, the space constraint of installation site the maximum of high frequency magnet ring allow size, the structural strength of installation site has determined the maximal value of high frequency magnet ring weight.
In addition, the deployment scenarios of electrical equipment has also determined the high frequency magnet ring is suppressed the target of VFTO in the transformer station of installation GIS, and the inhibition of high frequency magnet ring also is subjected to the influence of electric parameter factor except the influence of structure.The performance index restrictive condition of high frequency magnet ring can also comprise the electric parameter allowed band of high frequency magnet ring.
General high frequency magnet ring is to be composed in series by a plurality of cylindrical shape magnet rings, Fig. 2 is the structural representation according to the single magnet ring of high frequency magnet ring that is used for the inhibition very fast transient overvoltage of the embodiment of the invention, wherein single magnet ring is axisymmetric columnar structured, wherein, D is the magnet ring external diameter, d is the magnet ring internal diameter, H is ring axial magnetic length, then (D-d)/2 are the radial thickness of magnet ring, and the maximum of above-mentioned high frequency magnet ring allows size to comprise: the internal diameter numerical range of the greatest axial length of high frequency magnet ring, cylindrical shape magnet ring, the external diameter numerical range of cylindrical shape magnet ring.The electric parameter allowed band of high frequency magnet ring specifically can comprise: the resistivity value scope of magnetic material and this high frequency magnet ring are to the inhibition requirement of very fast transient overvoltage.
Fig. 3 is the oscillogram according to the typical VFTO of the optimization method of the high frequency magnet ring that is used for the inhibition very fast transient overvoltage of the embodiment of the invention, as shown in the figure, the VFTO of GIS can reach very high amplitude and steepness, and for example, amplitude can reach the several times of the normal working voltage of GIS.The insulation with neighboring device of the GIS of the VFTO of GIS self has constituted serious threat.Especially the higher transformer station of electric pressure (for example 500kV and more than), apparatus insulated nargin is relatively low, and the harm of VFTO is bigger.Therefore, above-mentioned high frequency magnet ring requires to comprise that to the inhibition of very fast transient overvoltage inhibition to the very fast transient overvoltage amplitude requires and to the inhibition requirement of very fast transient overvoltage wave head steepness.
Before the high frequency magnet ring is changed again, the equivalent electromagnetism transient Model that needs the high frequency magnet ring set up in advance, the preferred multiloop equivalence electromagnetism transient Model of in the electromagnetic transient simulation calculation procedure, setting up that is constituted by fixed value resistance and nonlinear inductance of using in the present embodiment.The electromagnetic transient simulation calculation procedure can select to use softwares such as EMTP or PSCAD.
Fig. 4 is the synoptic diagram according to the multiloop equivalent-circuit model of the optimization method medium-high frequency magnet ring of the high frequency magnet ring that is used for the inhibition very fast transient overvoltage of the embodiment of the invention.The circuit model of this multiloop equivalent-circuit model medium-high frequency magnet ring is made of a plurality of coils that intercouple, and each coil is with a fixed value resistance and a nonlinear inductance modeling, in the drawings, and R
1, R
2, R
3... R
nBe the fixed value resistance in the circuit model, i
1, i
2, i
3... i
nBe respectively the electric current by each resistance, L
1, L
2... L
N-1, Ln-1 is the nonlinear inductance of n layer circuit.
Resistance value and nonlinear inductance parameter can be determined by following method in the above equivalent-circuit model:
Determine the following parameter of high frequency magnet ring: treat the physical dimension of the magnet ring of modeling, the electricalresistivity of this magnet ring, the magnetization curve (BH curve) of magnet ring material, physical dimension comprises promising magnet ring external diameter r
2, magnet ring internal diameter r
1, the thickness w of magnet ring;
Magnet ring is divided into some hollow subrings along the direction of eddy current, determine the partition patterns (such as being divided into several subrings to the magnet ring equal thickness) of subring, determine the physical dimension of each subring, Fig. 5 is the shaft section view according to the subdivision subring of the optimization method of the high frequency magnet ring that is used for the inhibition very fast transient overvoltage of the embodiment of the invention, according to the dimensioning among Fig. 5, this physical dimension comprises the internal diameter r of each subring
1, n, external diameter r
2, n, axial width w
n, axial wall thickness Δ w
n, radial thickness Δ rn, n=1,2,3 ..., during concrete subdivision, can suitably neglect inner some subrings, need to determine the subring number that keeps.
According to the dimensional parameters of Fig. 5, can utilize the resistance value parameter in formula (1) the computation model equivalent circuit diagram:
Magnetic flux-current curve of nonlinear inductance L can be calculated by formula (2):
Utilize equivalent electromagnetism transient Model that the inhibition of the different high frequency magnet rings that meet the performance index restrictive condition is carried out the inhibition that emulation can obtain different high frequency magnet rings among the step S17.Thereby the optimization parameter that obtains the high frequency magnet ring according to inhibition among the step S19 specifically comprises: the inhibition to different high frequency magnet rings sorts, to pick out the high frequency magnet ring of inhibition optimum; With the parameter of the high frequency magnet ring of inhibition optimum as optimizing parameter.Above-mentioned optimization parameter can comprise: the resistivity of the structural parameters of high frequency magnet ring and high frequency magnet ring magnetic material.Particularly, the structural parameters after the optimization can comprise best axially and the best axial length of radial dimension, magnet ring string, and specifically use which kind of magnetic material.
After obtaining the optimization parameter of high frequency magnet ring, can determine the structure and material of high frequency magnet ring according to optimizing parameter.Thereby obtain meeting the optimum high frequency magnet ring of field requirement, realize maximum Technological Economy, be beneficial to the high frequency magnet ring and suppress applying of VFTO technology, reduce the harm of VFTO, security and the reliability of raising Operation of Electric Systems.
A kind of optimum implementation to the optimization method of the high frequency magnet ring that be used for to suppress very fast transient overvoltage of the embodiment of the invention describes below.Fig. 6 is the process flow diagram of optimum implementation of optimization method of the high frequency magnet ring that be used for to suppress very fast transient overvoltage of the embodiment of the invention.
At first, suppress the concrete condition that electrical equipment is arranged in the GIS equipment of VFTO and the transformer station as required, the VFTO amplitude that definite inhibition will reach and steepness of wave edge target determine that the installation site of high frequency magnet ring, the maximum of high frequency magnet ring string allow the restrictive conditions such as permission variation range of axial length and Maximum Permissible Weight, magnet ring internal diameter and external diameter and magnetic material resistivity.Also can provide restriction to the overall weight of magnet ring material in the practical application.
Particularly, when determining above restrictive condition, need to consider to note following some:
1, the different riding position of magnet ring has different inhibitions.Should make magnet ring as far as possible near the switch fracture during installation, can suppress capable wave amplitude and steepness on the whole bus, have best inhibition.
2, the selection of magnet ring material. the magnet ring material has the isoparametric difference of frequency response characteristic, magnetic permeability and saturation induction density.VFTO with magnet ring inhibition GIS should select the material that high frequency response characteristic is better, magnetic permeability is higher and saturation induction density is higher as far as possible.In actual applications, preferably select Ferrite Material.
3, the physical dimension of magnet ring.In actual applications, the size of magnet ring is subjected to the restriction of space and insulation, and that can not design is very big, need reach the effect of effective inhibition VETO in taking suitable spatial dimension as far as possible.The physical dimension of magnet ring can be selected as follows: when magnet ring is arranged on high potential position, should closely be enclosed within on the conducting rod of GIS, namely the radius of the inside radius of magnet ring and conducting rod is identical.When magnet ring was arranged on the earth potential, the external radius of magnet ring was identical with the inside radius of the metallic conduit of GIS.The selection poor, the wall thickness of magnet ring just of the interior external radius of magnet ring is advisable can reasonably realize insulating Design.The axial dimension of single magnet ring is programmable smaller, is chosen in tens millimeter and gets final product.Select magnet ring to stack number according to concrete needs, can change the axial length of magnet ring neatly.
, in electromagnetic transient simulation calculation procedure (as EMTP or PSCAD etc.), set up circuit model that the electro-magnetic transient of in substation equipment and circuit with VFTO relevant circuit part calculate, set up the multiloop equivalence electromagnetism transient Model of high frequency magnet ring thereafter.
Again, in the parameter variation range of permission, calculate by the electromagnetic transient simulation calculation procedure under the situation of the radial thickness of different single magnet rings and axial length, the whole axial length of magnet ring string, magnet ring material electric conductivity, high frequency magnet ring device is to the influence of VFTO inhibition.
Finally, determine according to top simulation calculation result and multivariate optimization method, VFTO suppresses with the axially best and radial dimension of high frequency magnet ring, the best axial length of magnet ring string, the best electrical conductivity of magnet ring material under specified criteria.In order to produce the high frequency magnet ring according to above optimization parameter.
Optimization method for the high frequency magnet ring that suppresses very fast transient overvoltage of the present invention, physical condition according to the scene, determine the restrictive condition of magnet ring parameter, and in meeting the scope of restrictive condition through simulation calculation, obtain optimum magnet ring and optimize parameter, reached the effect of the largest optimization of magnet ring size and weight under predetermined inhibition target and the restrictive condition, thereby realize maximum Technological Economy, be beneficial to the high frequency magnet ring and suppress applying of VFTO technology, reduce the harm of VFTO, improve security and the reliability of Operation of Electric Systems, this achievement can be applicable in the electric system of the various electric pressures of using GIS equipment.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. an optimization method that is used for the high frequency magnet ring of inhibition very fast transient overvoltage is characterized in that, comprising:
The deployment scenarios of obtaining the structure of the fully closed combined electric unit GIS that described high frequency magnet ring is installed and electrical equipment in the transformer station of described GIS being installed;
Determine the performance index restrictive condition of described high frequency magnet ring according to the deployment scenarios of the structure of described GIS and described electrical equipment;
Described performance index restrictive condition is imported the equivalent electromagnetism transient Model of the high frequency magnet ring of setting up in advance;
Utilize described equivalent electromagnetism transient Model simulation calculation to meet the different high frequency magnet rings of described performance index restrictive condition to the inhibition of very fast transient overvoltage;
Obtain the optimization parameter of described high frequency magnet ring according to described inhibition.
2. optimization method according to claim 1, it is characterized in that the performance index restrictive condition of described high frequency magnet ring comprises: the maximum of described high frequency magnet ring allows size, the maximal value of described high frequency magnet ring weight and the electric parameter allowed band of described high frequency magnet ring.
3. optimization method according to claim 2, it is characterized in that, described high frequency magnet ring is composed in series by a plurality of cylindrical shape magnet rings, and the maximum of described high frequency magnet ring allows size to comprise: the internal diameter numerical range of the greatest axial length of described high frequency magnet ring, described cylindrical shape magnet ring and the external diameter numerical range of described cylindrical shape magnet ring.
4. optimization method according to claim 2 is characterized in that, the electric parameter allowed band of described high frequency magnet ring comprises: the resistivity value scope of magnetic material and this high frequency magnet ring are to the inhibition requirement of very fast transient overvoltage.
5. optimization method according to claim 4 is characterized in that, described inhibition requires to comprise that the inhibition to the very fast transient overvoltage amplitude requires and to the inhibition requirement of very fast transient overvoltage wave head steepness.
6. optimization method according to claim 1, it is characterized in that the equivalent electromagnetism transient Model of the described high frequency magnet ring of setting up in advance is: the multiloop equivalence electromagnetism transient Model of setting up in the electromagnetic transient simulation calculation procedure that is constituted by fixed value resistance and nonlinear inductance.
7. optimization method according to claim 1, it is characterized in that, the described optimization parameter that obtains described high frequency magnet ring according to described inhibition comprises: the inhibition to described different high frequency magnet rings sorts, to pick out the high frequency magnet ring of inhibition optimum; With the parameter of the high frequency magnet ring of described inhibition optimum as described optimization parameter.
8. optimization method according to claim 7 is characterized in that, described optimization parameter comprises: the resistivity of the structure optimization parameter of high frequency magnet ring and high frequency magnet ring magnetic material.
9. optimization method according to claim 8 is characterized in that, described structure optimization parameter comprises: the internal diameter of the weight of magnet ring, the axial length of magnet ring, magnet ring and the external diameter of magnet ring.
10. according to each described optimization method in the claim 1 to 9, it is characterized in that, after obtaining the optimization parameter of described high frequency magnet ring, also comprise: the structure and material of determining described high frequency magnet ring according to described optimization parameter.
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| CN111475922A (en) * | 2020-03-16 | 2020-07-31 | 大唐水电科学技术研究院有限公司 | Power plant booster station main transformer switching-on overvoltage simulation modeling method |
| CN111475923A (en) * | 2020-03-16 | 2020-07-31 | 大唐水电科学技术研究院有限公司 | Electromagnetic transient analysis modeling method for sulfur hexafluoride gas insulated switchgear |
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| CN103678808A (en) * | 2013-12-12 | 2014-03-26 | 中国能源建设集团广东省电力设计研究院 | Transformer substation electromagnetic field simulation method based on component library |
| CN103678808B (en) * | 2013-12-12 | 2017-04-05 | 中国能源建设集团广东省电力设计研究院有限公司 | Transformer station's electromagnetic field analogy method based on component library |
| CN105223479A (en) * | 2015-10-22 | 2016-01-06 | 江苏省电力公司电力科学研究院 | A kind of extra-high voltage GIS testing on-site impact transient overvoltage suppressing method |
| CN106972396A (en) * | 2017-03-20 | 2017-07-21 | 平高集团有限公司 | VFTO restraining devices, damping bus unit, bus and GIS |
| CN106992509A (en) * | 2017-05-18 | 2017-07-28 | 中国电力科学研究院 | A kind of laminated bus guide rod and suppressing method for being used to suppress VFTO |
| CN106992509B (en) * | 2017-05-18 | 2019-04-30 | 中国电力科学研究院 | It is a kind of for inhibiting the laminated bus guide rod and suppressing method of VFTO |
| CN107153743A (en) * | 2017-05-27 | 2017-09-12 | 山东大学 | VFTO intelligent simulations analysis method and system based on intelligent search algorithm |
| CN107153743B (en) * | 2017-05-27 | 2019-10-18 | 山东大学 | VFTO intelligent simulation analysis method and system based on intelligent search algorithm |
| CN111475922A (en) * | 2020-03-16 | 2020-07-31 | 大唐水电科学技术研究院有限公司 | Power plant booster station main transformer switching-on overvoltage simulation modeling method |
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| CN111475922B (en) * | 2020-03-16 | 2023-03-28 | 大唐水电科学技术研究院有限公司 | Power plant booster station main transformer switching-on overvoltage simulation modeling method |
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