CN106934115A - A kind of method and system of the wideband model for setting up gas-insulated switchgear damping bus - Google Patents
A kind of method and system of the wideband model for setting up gas-insulated switchgear damping bus Download PDFInfo
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- CN106934115A CN106934115A CN201710094857.8A CN201710094857A CN106934115A CN 106934115 A CN106934115 A CN 106934115A CN 201710094857 A CN201710094857 A CN 201710094857A CN 106934115 A CN106934115 A CN 106934115A
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- 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
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06N—COMPUTING ARRANGEMENTS BASED ON SPECIFIC COMPUTATIONAL MODELS
- G06N3/00—Computing arrangements based on biological models
- G06N3/12—Computing arrangements based on biological models using genetic models
- G06N3/126—Evolutionary algorithms, e.g. genetic algorithms or genetic programming
Abstract
It is a kind of to set up the method and system that gas-insulated switch GIS device damps bus wideband model.Wherein, methods described includes：Measure the frequency variable element that the equipment damps bus；Admittance characteristic curve is drawn with the frequency variable element of damping bus based on the equipment；The parameter of each the local peaking's point based on admittance characteristic curve obtains the parameter value of the element of each resistance-inductance-capacitance conductance RLCG branch road, and is overlapped the RLCG branch roads using image method and obtains equivalent-circuit model；Calculated with the successive ignition of variation using the intersection of genetic algorithm, determine the optimal value of the element of each RLCG branch road in equivalent-circuit model, obtain optimum circuit model；And frequency sweep emulation is carried out to optimum circuit model, and frequency sweep result and actual measured results are contrasted, the accuracy of optimum circuit model is verified to determine GIS device damps the wideband model of bus.
Description
Technical field
The present invention relates to T ＆ D Technology field, and gas-insulated switchgear use is set up more particularly, to one kind
Damp the method and system of the wideband model of bus.
Background technology
In gas-insulated switch (gas insulated switchgear, GIS) equipment, isolator operation produces special
Fast transient overvoltage (very fast transient overvoltage, VFTO), to GIS device, external connection apparatus with
And the safe operation of secondary device has a major impact, and with the raising of voltage class, this influence is more and more significant, in extra-high voltage
It is especially prominent in system.
Currently, mainly have to the suppressing method of VFTO installed additional in disconnecting switch parallel resistance, using actuating at a slow speed every
Pass is left, magnet ring is installed additional and increases damping bus etc..Suppress in the method for VFTO damping bus is increased, exist due to temporary
The change of wave impedance in state calculating process, it is impossible to the problem being modeled using master pattern.
The content of the invention
In order to solve the above mentioned problem of background technology presence, the present invention proposes one kind by measuring damping bus frequency change ginseng
Number, and using image method combination genetic algorithm method set up GIS device damp bus wideband model method and system.
The method of the wideband model for setting up GIS device damping bus includes：
Measure the frequency variable element that the GIS device damps bus.Preferably, the measurement GIS device frequency for damping bus
The method of variable element includes：The damping bus is positioned in GIS pipelines, two ends are fixed using disc insulator, to damping
Bus two ends apply the frequency conversion voltage of frequency 50Hz to 120MHzUsing wideband current sensor measurement by damping bus
Electric currentAccording toCalculate the frequency variable element of damping bus.
Admittance characteristic curve is drawn with the frequency variable element of damping bus based on the GIS device.
The parameter of each the local peaking's point based on admittance characteristic curve obtains each resistance-inductance-capacitance conductance RLCG branch
The parameter value of the element on road, and the RLCG branch roads are overlapped using image method obtain equivalent-circuit model.
Preferably, the GIS device damping bus is conductive helical pipe, the helicla flute spacing distance phase of the helix tube
Deng, and described each helicla flute two ends parallel connection damping resistance, the damping resistance is cascaded in helix tube moderate distance,
And be electrically connected with helix tube by inserts or spring leaf.
The parameter for being preferably based on each local peaking's point of admittance characteristic curve obtains the element of each RLCG branch road
Parameter value includes：
F is setmaxIt is corresponding frequency, y at local peaking's pointmaxIt is the admittance value at local peaking's point；
By fmaxAnd ymaxCalculate the resistance R of the RLCG branch roadsk, inductance Lk, electric capacity CkWith conductance Gk, derivation formula is as follows：
ak"=2 π × fmax
-ak'=ak″/100
ck'=- ak″/ak′×ck″
Rk=(- 2a'k+2(c'ka'k+c″ka″k)Lk)Lk
Gk=-2 (c'ka'k+c″ka″k)CkLk。
Calculated with the successive ignition of variation using the intersection of genetic algorithm, determine each RLCG branch road in equivalent-circuit model
Element optimal value, obtain optimum circuit model.
Preferably, calculated with the successive ignition of variation using the intersection of genetic algorithm, determined every in equivalent-circuit model
The optimal value of the element of individual RLCG branch roads, obtaining optimum circuit model includes：
Step 1, the maximum heredity number of times of setting, and hereditary number of times initial value is set equal to 0；
Step 2, using each RLCG branch road as original initial individuals, using all RLCG branch roads as original initial population；
Step 3, produced by the hybridization between the original initial individuals in original initial population and variation it is initial with original
The same number of new population of original initial individuals of population；
Step 4, in the population that new population and original initial population are constituted optimal individuality is selected to constitute new initial kind
Group, selected individual number is identical with the number of original initial individuals, when actual heredity number of times is not equal to the maximum of setting
During hereditary number of times, using new initial population as original initial population, repeat step 3 and step 4；
Step 5, when actual heredity number of times is equal to the maximum heredity number of times of setting, determine each individual optimal value, obtain
To optimum circuit model.
Frequency sweep emulation is carried out to optimum circuit model, frequency sweep result and actual measured results are contrasted, verified optimal
The accuracy of circuit model, the optimum circuit model that will meet accuracy requirement is defined as the wideband that GIS device damps bus
Model.
According to another aspect of the present invention, the wideband model that GIS device damps bus is set up the invention further relates to a kind of
System, the system includes：
Measurement apparatus, it is used to measure the frequency variable element that GIS device damps bus.
The method of the frequency variable element of the measurement apparatus measurement GIS device damping bus includes：Damping bus is placed
In in GIS pipelines, two ends are fixed using disc insulator, and damping bus two ends are applied with the variable-frequency electric of frequency 50Hz to 120MHz
PressureUsing wideband current sensor measurement by damping the electric current of busAccording toCalculate the frequency of damping bus
Variable element.
Drawing of Curve device, its frequency variable element for being used for the damping bus of the GIS device based on measurement draws admittance characteristic
Curve.
Equivalent-circuit model sets up device, and its parameter for being used for each the local peaking's point based on admittance characteristic curve is obtained
The parameter value of the element of each RLCG branch road, and the RLCG branch roads are overlapped using image method obtain equivalent circuit mould
Type.
The parameter that equivalent-circuit model sets up each local peaking's point that device is based on admittance characteristic curve obtains each
The parameter value of the element of RLCG branch roads includes：
F is setmaxIt is corresponding frequency, y at local peaking's pointmaxIt is the admittance value at local peaking's point；By fmaxAnd ymax
Calculate the resistance R of the RLCG branch roadsk, inductance Lk, electric capacity CkWith conductance Gk, derivation formula is as follows：
ak"=2 π × fmax
-ak'=ak″/100
ck'=- ak″/ak′×ck″
Rk=(- 2a'k+2(c'ka'k+c″ka″k)Lk)Lk
Gk=-2 (c'ka'k+c″ka″k)CkLk。
Optimum circuit model determining device, it is used to be calculated with the successive ignition of variation using the intersection of genetic algorithm, really
Determine the optimal value of the element of each RLCG branch road in equivalent-circuit model, obtain optimum circuit model.
Preferably, optimum circuit model determining device is calculated using the intersection of genetic algorithm with the successive ignition of variation, really
Determine the optimal value of the element of each RLCG branch road in equivalent-circuit model, obtaining optimum circuit model includes：
Step 1, the maximum heredity number of times of setting, and hereditary number of times initial value is set equal to 0；
Step 2, using each RLCG branch road as original initial individuals, using all RLCG branch roads as original initial population；
Step 3, produced by the hybridization between the original initial individuals in original initial population and variation it is initial with original
The same number of new population of original initial individuals of population；
Step 4, in the population that new population and original initial population are constituted optimal individuality is selected to constitute new initial kind
Group, selected individual number is identical with the number of original initial individuals, when actual heredity number of times is not equal to the maximum of setting
During hereditary number of times, using new initial population as original initial population, repeat step 3 and step 4；
Step 5, when hereditary number of times is equal to maximum heredity number of times, determine each individual optimal value, obtain optimum circuit
Network model.
Circuit model verifies device, and it is used to carry out frequency sweep emulation to optimum circuit model, and frequency sweep result is surveyed with actual
Amount result contrasted, verify optimum circuit model accuracy, will meet optimum circuit model accuracy requirement it is optimal
Circuit model is defined as wideband model.
In sum, the side that gas-insulated switchgear damps the wideband model of bus is set up by what the present invention was provided
Method and system, can effectively set up the wideband model that gas-insulated switchgear damps bus, so as to in damping bus
In how effective distributed resistance, set resistance value with increase resist VFTO provide effective reference frame.
Brief description of the drawings
By reference to the following drawings, illustrative embodiments of the invention can be more fully understood by：
Fig. 1 is according to the GIS device of specific embodiment of the invention damping bus surface texture figure；
Fig. 2 is according to the GIS device of specific embodiment of the invention damping bus profile；
Fig. 3 is the stream of the method for setting up GIS device damping bus wideband model according to the specific embodiment of the invention
Cheng Tu；
Fig. 4 is to damp bus frequency variable element schematic diagram according to the measurement GIS device of the specific embodiment of the invention；
Fig. 5 is the admittance characteristic curve map according to the specific embodiment of the invention；
Fig. 6 is the equivalent-circuit model figure according to the specific embodiment of the invention；
Fig. 7 is the genetic computation flow chart according to the specific embodiment of the invention；And
Fig. 8 is the knot of the system for setting up GIS device damping bus wideband model according to the specific embodiment of the invention
Composition.
Specific embodiment
With reference now to accompanying drawing, illustrative embodiments of the invention are introduced, however, the present invention can use many different shapes
Formula is implemented, and is not limited to embodiment described herein, there is provided these embodiments are to disclose at large and fully
The present invention, and fully pass on the scope of the present invention to person of ordinary skill in the field.For showing for being illustrated in the accompanying drawings
Term in example property implementation method is not limitation of the invention.In the accompanying drawings, identical cells/elements are attached using identical
Icon is remembered.
Unless otherwise indicated, term (including scientific and technical terminology) used herein has to person of ordinary skill in the field
It is common to understand implication.Further it will be understood that the term limited with usually used dictionary, is appreciated that and it
The linguistic context of association area has consistent implication, and is not construed as Utopian or excessively formal meaning.
Fig. 1 is according to the GIS device of specific embodiment of the invention damping bus surface texture figure.Fig. 2 is according to this
The GIS device of invention specific embodiment damping bus profile.With reference to shown in Fig. 1 and Fig. 2, heretofore described GIS sets
Standby damping bus is conductive helical pipe, and the helicla flute spacing distance of the helix tube is equal, and described each helicla flute two ends
Damping resistance in parallel, the damping resistance is cascaded in helix tube moderate distance, and by inserts or spring leaf and spiral shell
Coil is electrically connected.
Fig. 3 is the stream of the method for setting up GIS device damping bus wideband model according to the specific embodiment of the invention
Cheng Tu.As shown in figure 3, the method 300 of the wideband model for setting up GIS device damping bus is since step S301.
In step S301, frequency variable element of the GIS device with damping bus is measured.
In step S302, admittance characteristic curve is drawn with the frequency variable element of damping bus based on the GIS device.
In step S303, the parameter of each the local peaking's point based on admittance characteristic curve obtains each resistance-inductance-capacitance
The parameter value of the element of conductance RLCG branch roads, and the RLCG branch roads are overlapped using image method obtain equivalent circuit mould
Type.
In step S304, calculated with the successive ignition of variation using the intersection of genetic algorithm, in determining equivalent-circuit model
The optimal value of the element of each RLCG branch road, obtains optimum circuit model.
In step S305, frequency sweep emulation is carried out to optimum circuit model, it is right that frequency sweep result and actual measured results are carried out
Than verifying the accuracy of optimum circuit model to determine GIS device and damping the wideband model of bus.
Fig. 4 is to damp bus frequency variable element schematic diagram according to the measurement GIS device of the specific embodiment of the invention.As schemed
Shown in 4, the method for the frequency variable element of measurement GIS device damping bus includes：The damping bus 401 is positioned over into GIS to set
In standby 406 pipeline, two ends are fixed using disc insulator 402, are applied using 404 pairs of damping bus 401 two ends of variable-frequency power sources
The frequency conversion voltage of frequency 50Hz to 120MHzElectric current by damping bus 401 is measured using wideband current sensor 405
According toCalculate the frequency variable element of damping bus 401.
Fig. 5 is the admittance characteristic curve map according to the specific embodiment of the invention.As shown in figure 5, this specific embodiment
In admittance characteristic curve have 4 local peaking's points, fmaxIt is corresponding frequency, y at local peaking's pointmaxIt is local peaking Dian Chu
Admittance value.
The parameter for being preferably based on each local peaking's point of admittance characteristic curve obtains the element of each RLCG branch road
Parameter value refers to by fmaxAnd ymaxCalculate the resistance R of the RLCG branch roadsk, inductance Lk, electric capacity CkWith conductance Gk, derivation formula is as follows：
ak"=2 π × fmax
-ak'=ak″/100
ck'=- ak″/ak′×ck″
Rk=(- 2a'k+2(c'ka'k+c″ka″k)Lk)Lk
Gk=-2 (c'ka'k+c″ka″k)CkLk。
By the parameter value calculation of each RLCG circuit out after, be that can obtain equivalent-circuit model by each branch circuit parallel connection.
Fig. 6 is the equivalent-circuit model figure according to the specific embodiment of the invention.As shown in fig. 6, being n RLCG branch circuit parallel connection in this figure
And the equivalent-circuit model for being formed.
Fig. 7 is the genetic computation flow chart according to the specific embodiment of the invention.As shown in fig. 7, using genetic algorithm
Intersect and calculated with the successive ignition of variation, determine the n optimal value of the element of RLCG branch roads in equivalent-circuit model, obtain most
Excellent circuit model is since step S701.
In step S701, the maximum heredity number of times of setting, and hereditary number of times initial value is set equal to 0；
In step S702, using n RLCG branch road as original initial individuals, using all RLCG branch roads as original initial kind
Group N；
In step S703, there is n by the hybridization between the original initial individuals in original initial population N and variation
Individual new population, when actual heredity number of times is not equal to the maximum heredity number of times of setting, using new initial population as original
Initial population, repeat step 3 and step 4；
In step S704, select n optimal individual composition new in the population that new population and original initial population are constituted
Initial population, when actual heredity number of times is not equal to the maximum heredity number of times of setting, using new initial population as it is original just
Beginning population, repeat step 3 and step 4；
In step S705, when actual heredity number of times is equal to the maximum heredity number of times of setting, the optimal of each individuality is determined
Value, obtains optimum circuit model.
According to another aspect of the present invention, the wideband model that GIS device damps bus is set up the invention further relates to a kind of
System.Fig. 8 is the structure of the system for setting up GIS device damping bus wideband model according to the specific embodiment of the invention
Figure.As shown in figure 8, the system 800 includes：
Measurement apparatus 801, it is used to measure the frequency variable element that GIS device damps bus.
Drawing of Curve device 802, it is special that its frequency variable element for being used for the damping bus of the GIS device based on measurement draws admittance
Linearity curve.
Equivalent-circuit model sets up device 803, its parameter for being used for each the local peaking's point based on admittance characteristic curve
The parameter value of the element of each RLCG branch road is obtained, and the RLCG branch roads are overlapped using image method are obtained equivalent circuit
Model.
Optimum circuit model determining device 804, it is used to be calculated with the successive ignition of variation using the intersection of genetic algorithm,
Determine the optimal value of the element of each RLCG branch road in equivalent-circuit model, obtain optimum circuit model.
Circuit model verifies device 805, and it is used to carry out frequency sweep emulation to optimum circuit model, by frequency sweep result and reality
Measurement result is contrasted, and verifies the accuracy of optimum circuit model, and the optimum circuit model that will meet accuracy requirement determines
It is wideband model.
Fig. 4 is to damp bus frequency variable element schematic diagram according to the measurement GIS device of the specific embodiment of the invention.As schemed
Shown in 4, the method for the frequency variable element of the measurement GIS device damping bus of measurement apparatus 801 includes：By the damping bus 401
It is positioned in the pipeline of GIS device 406, two ends are fixed using disc insulator 402, using 404 pairs of damping buses of variable-frequency power sources
401 two ends apply the frequency conversion voltage of frequency 50Hz to 120MHzMeasured by damping bus using wideband current sensor 405
401 electric currentAccording toCalculate the frequency variable element of damping bus 401.
Fig. 5 is the admittance characteristic curve map according to the specific embodiment of the invention.As shown in figure 5, this specific embodiment
In admittance characteristic curve have 4 local peaking's points, fmaxIt is corresponding frequency at local peaking's point, ymax is local peaking's point
The admittance value at place.
The parameter that equivalent-circuit model sets up each local peaking's point that device 803 is based on admittance characteristic curve obtains each
The parameter value of the element of RLCG branch roads refers to by fmaxAnd ymaxCalculate the resistance R of the RLCG branch roadsk, inductance Lk, electric capacity CkAnd conductance
Gk, derivation formula is as follows：
ak"=2 π × fmax
-ak'=ak″/100
ck'=- ak″/ak′×ck″
Rk=(- 2a'k+2(c'ka'k+c″ka″k)Lk)Lk
Gk=-2 (c'ka'k+c″ka″k)CkLk。
By the parameter value calculation of each RLCG circuit out after, will each branch circuit parallel connection can equivalent-circuit model set up
Equivalent-circuit model is obtained in device 803.Fig. 6 is the equivalent-circuit model figure according to the specific embodiment of the invention.Such as Fig. 6 institutes
Show, be n RLCG branch circuit parallel connection in this figure and the equivalent-circuit model that is formed.
Fig. 7 is the genetic computation flow chart according to the specific embodiment of the invention.As shown in fig. 7, optimum circuit model is true
Determine device 804 to be calculated with the successive ignition of variation using the intersection of genetic algorithm, determine n RLCG branch in equivalent-circuit model
The optimal value of the element on road, obtains optimum circuit model since step S701.
In step S701, the maximum heredity number of times of setting, and hereditary number of times initial value is set equal to 0；
In step S702, using n RLCG branch road as original initial individuals, using all RLCG branch roads as original initial kind
Group N；
In step S703, there is n by the hybridization between the original initial individuals in original initial population N and variation
Individual new population, when actual heredity number of times is not equal to the maximum heredity number of times of setting, using new initial population as original
Initial population, repeat step 3 and step 4；
In step S704, select n optimal individual composition new in the population that new population and original initial population are constituted
Initial population, when actual heredity number of times is not equal to the maximum heredity number of times of setting, using new initial population as it is original just
Beginning population, repeat step 3 and step 4；
In step S705, when actual heredity number of times is equal to the maximum heredity number of times of setting, the optimal of each individuality is determined
Value, obtains optimum circuit model.
By above embodiments describing the present invention.However, it is known in those skilled in the art, as subsidiary
Patent right requirement limited, except the present invention other embodiments disclosed above equally fall in the scope of the present invention
It is interior.
Normally, all terms for using in the claims are all solved according to them in the usual implication of technical field
Release, unless clearly defined in addition wherein.All of reference " one/described/be somebody's turn to do【Device, component etc.】" all it is opened ground
At least one of described device, component etc. example is construed to, unless otherwise expressly specified.Any method disclosed herein
Step need not all be run with disclosed accurate order, unless explicitly stated otherwise.
Claims (10)
1. a kind of to set up the method that gas-insulated switch GIS device damps the wideband model of bus, methods described includes：
Measure the frequency variable element that the GIS device damps bus；
Admittance characteristic curve is drawn with the frequency variable element of damping bus based on the GIS device；
The parameter of each the local peaking's point based on admittance characteristic curve obtains each resistance-inductance-capacitance conductance RLCG branch road
The parameter value of element, and the RLCG branch roads are overlapped using image method obtain equivalent-circuit model；
Calculated with the successive ignition of variation using the intersection of genetic algorithm, determine the unit of each RLCG branch road in equivalent-circuit model
The optimal value of part, obtains optimum circuit model；And
Frequency sweep emulation is carried out to optimum circuit model, frequency sweep result and actual measured results are contrasted, verify optimum circuit
The accuracy of model, the optimum circuit model that will meet accuracy requirement is defined as the wideband model that GIS device damps bus.
2. method according to claim 1, it is characterised in that the GIS device damping bus is conductive helical pipe, institute
The helicla flute spacing distance for stating helix tube is equal, and described each helicla flute two ends parallel connection damping resistance, and the damping resistance exists
Helix tube moderate distance it is cascaded, and is electrically connected with helix tube by inserts or spring leaf.
3. method according to claim 1, it is characterised in that the measurement GIS device side of the frequency variable element of damping bus
Method includes：The damping bus is positioned in GIS pipelines, two ends are fixed using disc insulator, damping bus two ends are applied
Plus the frequency conversion voltage of frequency 50Hz to 120MHzUsing wideband current sensor measurement by damping the electric current of busAccording toCalculate the frequency variable element of damping bus.
4. method according to claim 1, it is characterised in that the ginseng of each the local peaking's point based on admittance characteristic curve
The parameter value of the element that number obtains each RLCG branch road includes：
F is setmaxIt is corresponding frequency, y at local peaking's pointmaxIt is the admittance value at local peaking's point；
By fmaxAnd ymaxCalculate the resistance R of the RLCG branch roadsk, inductance Lk, electric capacity CkWith conductance Gk, derivation formula is as follows：
ak"=2 π × fmax
-ak'=ak″/100
ck'=- ak″/ak′×ck″
Rk=(- 2a 'k+2(c′ka′k+c″ka″k)Lk)Lk
Gk=-2 (c 'ka′k+c″ka″k)CkLk。
5. method according to claim 1, it is characterised in that using the successive ignition meter of intersection and the variation of genetic algorithm
Calculate, determine the optimal value of the element of each RLCG branch road in equivalent-circuit model, obtaining optimum circuit model includes：
Step 1, the maximum heredity number of times of setting, and hereditary number of times initial value is set equal to 0；
Step 2, using each RLCG branch road as original initial individuals, using all RLCG branch roads as original initial population；
Step 3, by the hybridization between the original initial individuals in original initial population and variation produce and original initial population
The same number of new population of original initial individuals；
Step 4, in the population that new population and original initial population are constituted optimal individuality is selected to constitute new initial population, institute
The individual number of selection is identical with the number of original initial individuals, when actual heredity number of times is not equal to the maximum heredity time of setting
During number, using new initial population as original initial population, repeat step 3 and step 4；
Step 5, when actual heredity number of times is equal to the maximum heredity number of times of setting, determine each individual optimal value, obtain most
Excellent circuit model.
6. a kind of to set up the system that gas-insulated switchgear GIS device damps the wideband model of bus, the system includes：
Measurement apparatus, it is used to measure the frequency variable element that GIS device damps bus；
Drawing of Curve device, its frequency variable element for being used for the damping bus of the GIS device based on measurement draws admittance characteristic curve；
Equivalent-circuit model sets up device, and its parameter for being used for each the local peaking's point based on admittance characteristic curve obtains each
The parameter value of the element of RLCG branch roads, and the RLCG branch roads are overlapped using image method obtain equivalent-circuit model；
Optimum circuit model determining device, it is used to be calculated with the successive ignition of variation using the intersection of genetic algorithm, it is determined that etc.
The optimal value of the element of each RLCG branch road, obtains optimum circuit model in effect circuit model；And
Circuit model verifies device, and it is used to carry out frequency sweep emulation to optimum circuit model, by frequency sweep result and actual measurement knot
Fruit is contrasted, and verifies the accuracy of optimum circuit model, and the optimum circuit model that will meet accuracy requirement is defined as wideband
Model.
7. system according to claim 6, it is characterised in that the GIS device damping bus of the measurement apparatus measurement
It is conductive helical pipe, the helicla flute spacing distance of the helix tube is equal, and described each helicla flute two ends parallel connection damping resistance,
The damping resistance is cascaded in helix tube moderate distance, and is electrically connected with helix tube by inserts or spring leaf.
8. system according to claim 6, it is characterised in that the measurement apparatus measurement GIS device damping bus
The method of frequency variable element includes：Damping bus is positioned in GIS pipelines, two ends are fixed using disc insulator, it is female to damping
Line two ends apply the frequency conversion voltage of frequency 50Hz to 120MHzUsing wideband current sensor measurement by damping the electricity of bus
StreamAccording toCalculate the frequency variable element of damping bus.
9. system according to claim 6, it is characterised in that equivalent-circuit model sets up device and is based on admittance characteristic curve
The parameter value of the parameter element that obtains each RLCG branch road of each local peaking's point include：
F is setmaxIt is corresponding frequency, y at local peaking's pointmaxIt is the admittance value at local peaking's point；
By fmaxAnd ymaxCalculate the resistance R of the RLCG branch roadsk, inductance Lk, electric capacity CkWith conductance Gk, derivation formula is as follows：
ak"=2 π × fmax
-ak'=ak″/100
ck'=- ak″/ak′×ck″
Rk=(- 2a 'k+2(c′ka′k+c″ka″k)Lk)Lk
Gk=-2 (c 'ka′k+c″ka″k)CkLk。
10. system according to claim 6, it is characterised in that optimum circuit model determining device is using genetic algorithm
Intersect and calculated with the successive ignition of variation, determine the optimal value of the element of each RLCG branch road in equivalent-circuit model, obtain
Optimum circuit model includes：
Step 1, the maximum heredity number of times of setting, and hereditary number of times initial value is set equal to 0；
Step 2, using each RLCG branch road as original initial individuals, using all RLCG branch roads as original initial population；
Step 3, by the hybridization between the original initial individuals in original initial population and variation produce and original initial population
The same number of new population of original initial individuals；
Step 4, in the population that new population and original initial population are constituted optimal individuality is selected to constitute new initial population, institute
The individual number of selection is identical with the number of original initial individuals, when actual heredity number of times is not equal to the maximum heredity time of setting
During number, using new initial population as original initial population, repeat step 3 and step 4；
Step 5, when hereditary number of times is equal to maximum heredity number of times, determine each individual optimal value, obtain optimum circuit network
Model.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108595774A (en) * | 2018-03-28 | 2018-09-28 | 中国电力科学研究院有限公司 | A kind of damping busbar Simulation Calculation method for building up and system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108595774A (en) * | 2018-03-28 | 2018-09-28 | 中国电力科学研究院有限公司 | A kind of damping busbar Simulation Calculation method for building up and system |
| CN109100620A (en) * | 2018-06-08 | 2018-12-28 | 中国电力科学研究院有限公司 | A kind of verify inhibits conducting wire to the system and method for GIS substation VFTO inhibitory effect |
| CN109100620B (en) * | 2018-06-08 | 2022-04-22 | 中国电力科学研究院有限公司 | System and method for verifying suppression effect of suppression guide wire on VFTO of GIS transformer substation |
| CN115688661A (en) * | 2022-12-30 | 2023-02-03 | 华中科技大学 | Modeling method for full circuit parameters of spiral tube type damping bus for VFTO (very fast transient overvoltage) suppression |
| CN116663435A (en) * | 2023-08-01 | 2023-08-29 | 华中科技大学 | Damping bus structure parameter optimization method, damping bus structure parameter optimization device and storage medium |
| CN116663435B (en) * | 2023-08-01 | 2023-10-20 | 华中科技大学 | Damping bus structure parameter optimization method, damping bus structure parameter optimization device and storage medium |
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