CN110082652A - Choosing method, the device of arcing horn and insulator chain in overhead transmission line - Google Patents
Choosing method, the device of arcing horn and insulator chain in overhead transmission line Download PDFInfo
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- CN110082652A CN110082652A CN201910353575.4A CN201910353575A CN110082652A CN 110082652 A CN110082652 A CN 110082652A CN 201910353575 A CN201910353575 A CN 201910353575A CN 110082652 A CN110082652 A CN 110082652A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/02—Measuring effective values, i.e. root-mean-square values
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
- G01R31/1245—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of line insulators or spacers, e.g. ceramic overhead line cap insulators; of insulators in HV bushings
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Abstract
The present invention provides the choosing method and selecting device of arcing horn and insulator chain in a kind of overhead transmission line, choosing method is the following steps are included: choose preset arcing horn according to the impulse withstand voltage value that arcing horn in the transmission line of electricity is subjected to, and determine the pressure voltage of the preset arcing horn；According to the quantity of the parameter of given insulator and insulator, the pressure voltage of insulator chain is obtained；According to the pressure voltage of the pressure voltage of the preset arcing horn and the insulator chain, the preset arcing horn is calculated to the Validity Index parameter of the insulator chain；Arcing horn and insulator chain are determined according to the Validity Index parameter.The present invention is under the premise of the characteristic for randomness of discharging, cooperate convenient for the selection of arcing horn and insulator chain, it can be in the case where not needing complete trial, reference is provided for the selection cooperation of arcing horn and insulator chain, improve the efficiency for choosing arcing horn and insulator chain, high reliablity, this method period is short, and cost is few.
Description
Technical field
The present invention relates to power domain, in particular to the selection of arcing horn and insulator chain in a kind of overhead transmission line
Method, apparatus.
Background technique
It is a kind of diverting type lightning protection mode that insulator chain, which installs arcing horn additional, is widely applied in foreign countries, China is chiefly used in
On ground electrode circuit, the key parameter of design is the cooperation coefficient in arcing horn gap and insulator chain length, value size
Arcing horn is influenced for the size of insulator chain protecting effect.At present both at home and abroad mostly based on experimental study determine arcing horn gap and
The reliability of the matching relationship of insulator chain, experimental study has direct directive significance to determining arcing horn gap, but
It is that experimental study has the shortcomings that the period is long, cost is high, leads to the low efficiency for choosing arcing horn and insulator chain.
Summary of the invention
In view of this, the present invention provides the choosing method of arcing horn and insulator chain in a kind of overhead transmission line, dress
It sets, chooses the low efficiency for cooperating arcing horn and insulator chain to solve, the period is long, the high problem of cost.
In order to solve the above technical problems, the invention adopts the following technical scheme:
In a first aspect, the selection side of arcing horn and insulator chain in overhead transmission line according to an embodiment of the present invention
Method, comprising the following steps:
Step S1 chooses preset arcing horn according to the impulse withstand voltage value that arcing horn in the transmission line of electricity is subjected to, and
Determine the pressure voltage of the preset arcing horn；
Step S2 obtains the pressure voltage of insulator chain according to the quantity of the parameter of given insulator and insulator；
Step S3 is calculated described pre- according to the pressure voltage of the pressure voltage of the preset arcing horn and the insulator chain
If arcing horn to the Validity Index parameter of the insulator chain；
Step S4 determines arcing horn and insulator chain according to the Validity Index parameter.
Further, the step S4 includes:
When the Validity Index parameter meets preset value, using the preset arcing horn as determining arcing horn,
Using the insulator chain being made of the quantity of given insulator as determining insulator chain.
Further, the step S4 includes:
Increase the quantity of the insulator when the Validity Index parameter is lower than preset value, executes step S2 and step
S3 meets preset value up to the Validity Index parameter, will be by increasing using the preset arcing horn as determining arcing horn
The insulator chain of the quantity composition of insulator after adding is as determining insulator chain；
The quantity of the insulator is reduced when the Validity Index parameter is higher than preset value, executes step S2 and step
S3 meets preset value up to the Validity Index parameter, will be by subtracting using the preset arcing horn as determining arcing horn
The insulator chain of the quantity composition of insulator after few is as determining insulator chain.
Further, in step s3, the calculation method of the Validity Index parameter includes:
U is calculated according to following formula (1)I50%, U is calculated according to following formula (2)A50%,
Wherein, UIAnd UANormal Distribution, stochastic variable UIFor the impulse flashover voltage of insulator chain, stochastic variable UA
For the impulse flashover voltage of arcing horn, UI50%For 50% discharge voltage of insulator chain, σIFor the mark of insulator chain discharge voltage
Poor, the U of standardA50% is 50% discharge voltage of arcing horn, σAFor the standard deviation of arcing horn discharge voltage；
The Validity Index parameter is calculated according to following formula (3):
Wherein,δ~N (0,1), Δ U=UA-UI,
σ is the standard deviation of Δ U,For the mean value of Δ U, P is probability-distribution function.
Second aspect, the selection dress of arcing horn and insulator chain in overhead transmission line according to an embodiment of the present invention
It sets, comprising:
First obtains module, and the impulse withstand voltage value for being subjected to according to arcing horn in the transmission line of electricity is chosen preset
Arcing horn, and determine the pressure voltage of the preset arcing horn；
Second obtains module, for obtaining insulator chain according to the parameter of given insulator and the quantity of insulator
Pressure voltage；
Computing module, for calculating according to the pressure voltage of the preset arcing horn and the pressure voltage of the insulator chain
Validity Index parameter of the preset arcing horn to the insulator chain；
Judgment module, for determining arcing horn and insulator chain according to the Validity Index parameter.
Further, the judgment module, for that described will preset when the Validity Index parameter meets preset value
Arcing horn as determining arcing horn, using the insulator chain being made of the quantity of given insulator as the insulator of determination
String.
Further, applied to the choosing method as described in above-described embodiment, the judgment module, for when described effective
Property index parameter increase the quantity of the insulator when being lower than preset value, execute step S2 and step S3 until the validity refers to
Mark parameter meets preset value, will be by the quantity of the insulator after increasing using the preset arcing horn as determining arcing horn
The insulator chain of composition is as determining insulator chain；
For reducing the quantity of the insulator when the Validity Index parameter is higher than preset value, execute step S2 and
Step S3 meets preset value up to the Validity Index parameter, will using the preset arcing horn as determining arcing horn
The insulator chain being made of the quantity of the insulator after reducing is as determining insulator chain.
Further, the computing module is used to calculate U according to following formula (1)I50%, U is calculated according to following formula (2)A50%,
Wherein, UIAnd UANormal Distribution, stochastic variable UIFor the impulse flashover voltage of insulator chain, stochastic variable UA
For the impulse flashover voltage of arcing horn, UI50%For 50% discharge voltage of insulator chain, σIFor the mark of insulator chain discharge voltage
Poor, the U of standardA50%For 50% discharge voltage of arcing horn, σAFor the standard deviation of arcing horn discharge voltage；
The computing module is used to calculate the Validity Index parameter according to following formula (3):
Wherein,δ~N (0,1), Δ U=UA-UI,
σ is the standard deviation of Δ U,For the mean value of Δ U, P is probability-distribution function.
It the third aspect, terminal according to an embodiment of the present invention, including processor, memory and is stored on the memory
And the computer program that can be run on the processor, it realizes when the computer program is executed by the processor as above-mentioned
The step of choosing method described in embodiment.
Fourth aspect, computer readable storage medium according to an embodiment of the present invention, the computer readable storage medium
Upper storage computer program, the computer program realize the step of choosing method described in above-described embodiment when being executed by processor
Suddenly.
The advantageous effects of the above technical solutions of the present invention are as follows:
The choosing method of arcing horn and insulator chain in overhead transmission line according to the present invention, according to the power transmission line
The impulse withstand voltage value that arcing horn is subjected in road chooses preset arcing horn, and determines the pressure voltage of the preset arcing horn；
According to the quantity of the parameter of given insulator and insulator, the pressure voltage of insulator chain is obtained；According to the preset trick arc
The pressure voltage of the pressure voltage at angle and the insulator chain calculates the preset arcing horn and refers to the validity of the insulator chain
Mark parameter；Arcing horn and insulator chain are determined according to the Validity Index parameter.The present invention is before the characteristic of electric discharge randomness
It puts, cooperates convenient for the selection of arcing horn and insulator chain, it can be in the case where not needing complete trial, for arcing horn and absolutely
The selection cooperation of edge substring provides reference, improves the efficiency for choosing arcing horn and insulator chain, high reliablity, this method period
Short, cost is few.
Detailed description of the invention
Fig. 1 is a stream of the choosing method of the arcing horn and insulator chain in the overhead transmission line of the embodiment of the present invention
Journey schematic diagram；
Fig. 2 is a connection schematic diagram of the selecting device of the embodiment of the present invention.
Appended drawing reference
First obtains module 10；Second obtains module 20；
Computing module 30；Judgment module 40.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
Attached drawing, the technical solution of the embodiment of the present invention is clearly and completely described.Obviously, described embodiment is this hair
Bright a part of the embodiment, instead of all the embodiments.Based on described the embodiment of the present invention, ordinary skill
Personnel's every other embodiment obtained, shall fall within the protection scope of the present invention.
Arcing horn in overhead transmission line according to an embodiment of the present invention and absolutely is specifically described in conjunction with attached drawing first below
The choosing method of edge substring.
As shown in Figure 1, the selection side of arcing horn and insulator chain in overhead transmission line according to an embodiment of the present invention
Method, comprising the following steps: step S1 chooses preset trick according to the impulse withstand voltage value that arcing horn in the transmission line of electricity is subjected to
Arc angle, and determine the pressure voltage of the preset arcing horn, the impulse withstand voltage value that arcing horn is subjected to that is to say that route infects arc
The switching overvoltage or lightning surge at angle；Step S2 is obtained exhausted according to the quantity of the parameter of given insulator and insulator
The pressure voltage of edge substring；Step S3 is calculated according to the pressure voltage of the pressure voltage of the preset arcing horn and the insulator chain
Validity Index parameter of the preset arcing horn to the insulator chain；Step S4, according to the Validity Index parameter
Determine arcing horn and insulator chain.The present invention is under the premise of the characteristic for randomness of discharging, convenient for the choosing of arcing horn and insulator chain
Cooperation is taken, reference can be provided in the case where not needing complete trial for the selection cooperation of arcing horn and insulator chain, improve
The efficiency of arcing horn and insulator chain is chosen, high reliablity, this method period is short, and cost is few.
It in step sl, may include ground electrode circuit and neutral pole bus in transmission line of electricity, it can be according to ground connection polar curve
The switching overvoltage of road and the switching-surge protective level of neutral pole bus, the tolerance electricity in arcing horn gap needed for determining
Pressure, and determined between the arcing horn according to the withstanding voltage in the required arcing horn gap.Operation on ground electrode circuit is excessively electric
The switching-surge protective level of pressure and neutral pole bus can reasonably select according to the actual situation, this is to carry out ground electrode circuit
The basis of Insulation Coordination under switching overvoltage.Generally, the switching-surge protective level on ground electrode circuit can pass through direct current
The modeling simulation analysis of transmission system obtains, and the switching-surge protective level of neutral pole bus can be by neutral pole bus arrester
Parameter obtain, then determine arcing horn gap withstanding voltage, the withstanding voltage with reference to existing design regulation, specification determine,
On the basis of the withstanding voltage in arcing horn gap, it is based on regulation or test data, with arcing horn gap under switching overvoltage
Do not puncture as principle, determine arcing horn gap, and then choose preset arcing horn, can be determined according to demand, so as to true
It protects the arcing horn chosen and insulator chain can satisfy protection needs, improve protecting effect.
In some embodiments of the invention, the step S4 may include: when the Validity Index parameter meet it is pre-
If when value, using the preset arcing horn as determining arcing horn, the insulator that will be made of the quantity of given insulator
It goes here and there as determining insulator chain.It is made of in each insulator chain multiple insulators, insulation can be chosen according to actual needs
The parameter of son, for example, the structure height etc. of insulator, the length of each insulator chain passes through the structure height by multiple insulators
The sum of obtain, Validity Index parameter that is to say the probability of protection circuit safety, when the Validity Index parameter meet it is pre-
It, can be using preset arcing horn as determining trick arc if when value, illustrating that the protection validity of entire circuit reaches protection and requires
Angle, using the insulator chain being made of the quantity of given insulator as determining insulator chain, so that the arcing horn after choosing
Meet protection with insulator chain to require.
In other embodiments of the invention, the step S4 includes: when the Validity Index parameter is lower than default
Increasing the quantity of the insulator when value, execution step S2 and step S3 meets preset value up to the Validity Index parameter,
Using the preset arcing horn as determining arcing horn, using the insulator chain being made of the quantity of the insulator after increasing as
Determining insulator chain.It that is to say, the protecting effect for circuit is illustrated when the Validity Index parameter is lower than preset value
Pre-provisioning request is not achieved, the quantity of the insulator can be increased at this time, repeats step S2 and step S3 until described have
Effect property index parameter meets preset value, can be using preset arcing horn as determining arcing horn, will be by the insulator after increasing
Quantity composition insulator chain as determining insulator chain wanted so that the arcing horn and insulator chain after choosing meet to protect
It asks.
The quantity of the insulator is reduced when the Validity Index parameter is higher than preset value, executes step S2 and step
S3 meets preset value up to the Validity Index parameter, will be by subtracting using the preset arcing horn as determining arcing horn
The insulator chain of the quantity composition of insulator after few is as determining insulator chain.It that is to say, when the Validity Index is joined
Number illustrates to be higher than pre-provisioning request for the protecting effect of circuit when being higher than preset value, in order to subtract under the premise of meeting pre-provisioning request
Few cost, it is possible to reduce the quantity of insulator can reduce the quantity of the insulator at this time, then repeat step S2 and
Step S3 meets preset value up to the Validity Index parameter, can be using preset arcing horn as determining arcing horn, will
The insulator chain being made of the quantity of the insulator after reducing is as determining insulator chain, so that arcing horn after choosing and absolutely
Edge substring meets protection and requires.
In an embodiment of the present invention, in step s3, the calculation method of the Validity Index parameter includes: with reference to not
With typical discharges test of the insulator chain under switching overvoltage, the impulse flashover voltage of insulator chain is stochastic variable UI, ginseng
Typical discharges test of the different the air gaps under switching overvoltage is examined, the impulse flashover voltage of arcing horn is stochastic variable UA,
U can be calculated according to following formula (1)I50%, U can be calculated according to following formula (2)A50%,
Wherein, UIAnd UANormal Distribution, stochastic variable UIFor the impulse flashover voltage of insulator chain, stochastic variable UA
For the impulse flashover voltage of arcing horn, UI50%For 50% discharge voltage of insulator chain, σIFor the mark of insulator chain discharge voltage
Poor, the U of standardA50%For 50% discharge voltage of arcing horn, σAFor the standard deviation of arcing horn discharge voltage；
The Validity Index parameter can be calculated according to following formula (3):
Wherein,δ~N (0,1), Δ U=UA-UI,
σ is the standard deviation of Δ U, σ2For the variance of Δ U,For the mean value of Δ U, P is probability-distribution function.
According to probability theory, Δ U also Normal Distribution, it is assumed that UAAnd UIIndependently of each other, mean value isΔ U is obeyed
Normal distribution, variances sigma2For
Δ U such as following formula (3a) indicates are as follows:
According to the basic principle of flashover, as the impulse flashover voltage U of insulator chainIGreater than the impulse flashover voltage of arcing horn
UAWhen, it will it is discharged first by arcing horn, realizes the purpose of protection insulator chain, as Δ U < 0, arcing horn can be protected effectively
Insulator chain is protected, enabling arcing horn is ρ to the Validity Index parameter of insulator chain, that is to say that arcing horn can be insulated with effective protection
The probability of substring is ρ, and ρ is expressed as following formula (3b):
ρ=P (Δ U < 0) (3b)
Using normalized, enable
Then (0,1) δ~N obtains following formula (3c)
And then above-mentioned formula (3) are obtained, found out by above formula, the mark of 50% discharge voltage of insulator chain and arcing horn, discharge voltage
Quasi- difference directly affects Validity Index parameter ρ, calculates Validity Index parameter ρ using above-mentioned formula (3).Pass through above method energy
It is enough rapidly and accurately to calculate Validity Index parameter ρ, improve the accuracy and reliability of calculated result.
According to 50% discharge voltage of arcing horn, 50% discharge voltage of insulator chain, cooperation coefficient and mark parital coefficient
Between relationship, available following formula:
UA50%=kUI50%(8), σA=γAUA50%(9), σI=γIUI50%(10),
In conjunction with above-mentioned formula (3), (8), (9) and (10) available following formula (4):
Wherein, k (k≤1) be arcing horn 50% discharge voltage and insulator chain 50% discharge voltage cooperation coefficient,
Can be approximately considered be arcing horn gap length and insulator chain effective length ratio be cooperation coefficient k, γAFor arcing horn
The mark parital coefficient of 50% discharge voltage, γIFor the mark parital coefficient of 50% discharge voltage of insulator chain.Above-mentioned formula (4) represents
Relationship between the cooperation coefficient of arcing horn and insulator chain, Validity Index parameter ρ, cooperation coefficient and mark parital coefficient,
In known other parameters, Validity Index parameter ρ can be obtained by cooperation coefficient, Validity Index parameter can also be passed through
ρ obtains corresponding cooperation coefficient.Cooperation coefficient k is also determined that when arcing horn is determined with insulator chain, similarly, arcing horn and absolutely
Arcing horn also can determine with insulator chain when the cooperation coefficient k of edge substring is determined.
Validity Index parameter ρ can be rapidly and accurately determined by the above method, convenient for arcing horn and insulator chain
Cooperation is chosen, reference can be provided in the case where not needing complete trial for the selection cooperation of arcing horn and insulator chain, subtract
Few test number (TN), improves the efficiency for choosing arcing horn and insulator chain, high reliablity, this method period is short, and cost is few.
The embodiment of the present invention also provides the selecting device of arcing horn and insulator chain in a kind of overhead transmission line, such as schemes
Shown in 2, selecting device includes: the first acquisition module 10, for resistance to according to the impact that arcing horn is subjected in the transmission line of electricity
Pressure value chooses preset arcing horn, and determines the pressure voltage of the preset arcing horn；Second obtains module 20, gives for basis
The parameter of fixed insulator and the quantity of insulator, obtain the pressure voltage of insulator chain；Computing module 30, for according to described pre-
If arcing horn pressure voltage and the insulator chain pressure voltage, calculate the preset arcing horn to the insulator chain
Validity Index parameter；Judgment module 40, for determining arcing horn and insulator chain according to the Validity Index parameter.Pass through
Selecting device can rapidly and accurately determine Validity Index parameter, cooperate convenient for the selection of arcing horn and insulator chain, can
In the case where not needing complete trial, reference is provided for the selection cooperation of arcing horn and insulator chain, test number (TN) is reduced, mentions
Height chooses the efficiency of arcing horn and insulator chain, and high reliablity, this method period is short, and cost is few.
In some embodiments of the invention, the judgment module 40, for when the Validity Index parameter meet it is pre-
If when value, using the preset arcing horn as determining arcing horn, the insulator that will be made of the quantity of given insulator
It goes here and there as determining insulator chain.
In other embodiments of the invention, applied to the choosing method in above-described embodiment, the judgment module 40
For increasing the quantity of the insulator when the Validity Index parameter is lower than preset value, it is straight to execute step S2 and step S3
Meet preset value to the Validity Index parameter, using the preset arcing horn as the arcing horn of determination, will be by increasing after
Insulator quantity composition insulator chain as determination insulator chain；The judgment module 40 is used to work as the validity
Index parameter reduces the quantity of the insulator when being higher than preset value, execute step S2 and step S3 until the Validity Index
Parameter meets preset value, will be by the sets of numbers of the insulator after reducing using the preset arcing horn as determining arcing horn
At insulator chain as determining insulator chain.
According to some embodiments of the present invention, the computing module 30 can be used for calculating U according to following formula (1)I50%, root
U is calculated according to following formula (2)A50%,
Wherein, UIAnd UANormal Distribution, stochastic variable UIFor the impulse flashover voltage of insulator chain, stochastic variable UA
For the impulse flashover voltage of arcing horn, UI50%For 50% discharge voltage of insulator chain, σIFor the mark of insulator chain discharge voltage
Poor, the U of standardA50%For 50% discharge voltage of arcing horn, σAFor the standard deviation of arcing horn discharge voltage；
The computing module 30 can be used for calculating the Validity Index parameter according to following formula (3):
Wherein,δ~N (0,1), Δ U=UA-UI,
σ is the standard deviation of Δ U,For the mean value of Δ U, P is probability-distribution function.
Validity Index parameter can be accurately calculated by computing module 30, improves checkout result accuracy, improves and recruits
Arc angle and insulator chain choose the reliability of cooperation.
Selecting device and the above-mentioned implementation of arcing horn and insulator chain in sky transmission line of electricity according to an embodiment of the present invention
Choosing method in example is corresponding, specifically may refer to arcing horn in the hollow transmission line of electricity of above-described embodiment and insulator chain
Choosing method, details are not described herein.
The embodiment of the present invention also provides a kind of terminal, including processor, memory and is stored on the memory and can
The computer program run on the processor, the computer program realize following steps when being executed by the processor:
Step S1 chooses preset arcing horn according to the impulse withstand voltage value that arcing horn in the transmission line of electricity is subjected to, and described in determination
The pressure voltage of preset arcing horn；Step S2 obtains insulator chain according to the quantity of the parameter of given insulator and insulator
Pressure voltage；Step S3 is calculated described pre- according to the pressure voltage of the pressure voltage of the preset arcing horn and the insulator chain
If arcing horn to the Validity Index parameter of the insulator chain；Step S4 is determined according to the Validity Index parameter and is recruited
Arc angle and insulator chain.By above-mentioned terminal, cooperates convenient for the selection of arcing horn and insulator chain, can not need to try completely
In the case where testing, reference is provided for the selection cooperation of arcing horn and insulator chain, improves the effect for choosing arcing horn and insulator chain
Rate, high reliablity, this method period is short, and cost is few.
Optionally, following steps are also realized when the computer program is executed by the processor:
The step S4 includes: to make the preset arcing horn when the Validity Index parameter meets preset value
For determining arcing horn, using the insulator chain being made of the quantity of given insulator as the insulator chain of determination.
Optionally, following steps are also realized when the computer program is executed by the processor:
The step S4 includes: the quantity for increasing the insulator when the Validity Index parameter is lower than preset value,
Step S2 and step S3 is executed until the Validity Index parameter meets preset value, using the preset arcing horn as determination
Arcing horn, using the insulator chain being made of the quantity of the insulator after increasing as determining insulator chain；
The quantity of the insulator is reduced when the Validity Index parameter is higher than preset value, executes step S2 and step
S3 meets preset value up to the Validity Index parameter, will be by subtracting using the preset arcing horn as determining arcing horn
The insulator chain of the quantity composition of insulator after few is as determining insulator chain.
Optionally, following steps are also realized when the computer program is executed by the processor:
In step s3, the calculation method of the Validity Index parameter includes:
U is calculated according to following formula (1)I50%, U is calculated according to following formula (2)A50%,
Wherein, UIAnd UANormal Distribution, stochastic variable UIFor the impulse flashover voltage of insulator chain, stochastic variable UA
For the impulse flashover voltage of arcing horn, U150%For 50% discharge voltage of insulator chain, σIFor the mark of insulator chain discharge voltage
Poor, the U of standardA50%For 50% discharge voltage of arcing horn, σAFor the standard deviation of arcing horn discharge voltage；
The Validity Index parameter is calculated according to following formula (3):
Wherein,δ~N (0,1), Δ U=UA-UI,
σ is the standard deviation of Δ U,For the mean value of Δ U, P is probability-distribution function.
The embodiment of the present invention also provides a kind of computer readable storage medium, stores on the computer readable storage medium
The step of computer program, the computer program realizes choosing method described in above-described embodiment when being executed by processor.
The above is a preferred embodiment of the present invention, it is noted that for those skilled in the art
For, without departing from the principles of the present invention, it can also make several improvements and retouch, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (10)
1. the choosing method of arcing horn and insulator chain in a kind of overhead transmission line, which comprises the following steps:
Step S1 chooses preset arcing horn according to the impulse withstand voltage value that arcing horn in the transmission line of electricity is subjected to, and determines
The pressure voltage of the preset arcing horn；
Step S2 obtains the pressure voltage of insulator chain according to the quantity of the parameter of given insulator and insulator；
Step S3 is calculated described preset according to the pressure voltage of the pressure voltage of the preset arcing horn and the insulator chain
Validity Index parameter of the arcing horn to the insulator chain；
Step S4 determines arcing horn and insulator chain according to the Validity Index parameter.
2. choosing method according to claim 1, which is characterized in that the step S4 includes:
It, will be by using the preset arcing horn as determining arcing horn when the Validity Index parameter meets preset value
The insulator chain of the quantity composition of given insulator is as determining insulator chain.
3. choosing method according to claim 1, which is characterized in that the step S4 includes:
Increase the quantity of the insulator when the Validity Index parameter is lower than preset value, it is straight to execute step S2 and step S3
Meet preset value to the Validity Index parameter, using the preset arcing horn as the arcing horn of determination, will be by increasing after
Insulator quantity composition insulator chain as determination insulator chain；
The quantity of the insulator is reduced when the Validity Index parameter is higher than preset value, and it is straight to execute step S2 and step S3
Meet preset value to the Validity Index parameter, using the preset arcing horn as the arcing horn of determination, will be by reducing after
Insulator quantity composition insulator chain as determination insulator chain.
4. choosing method according to claim 1, which is characterized in that in step s3, the Validity Index parameter
Calculation method includes:
U is calculated according to following formula (1)150%, U is calculated according to following formula (2)A50%,
Wherein, UIAnd UANormal Distribution, stochastic variable UIFor the impulse flashover voltage of insulator chain, stochastic variable UATo recruit arc
The impulse flashover voltage at angle, UI50%For 50% discharge voltage of insulator chain, σIFor the standard deviation of insulator chain discharge voltage,
UA50%For 50% discharge voltage of arcing horn, σAFor the standard deviation of arcing horn discharge voltage；
The Validity Index parameter is calculated according to following formula (3):
Wherein,δ~N (0,1), Δ U=UA-UI,σ is the standard of Δ U
Difference,For the mean value of Δ U, P is probability-distribution function.
5. the selecting device of arcing horn and insulator chain in a kind of overhead transmission line characterized by comprising
First obtains module, and the impulse withstand voltage value for being subjected to according to arcing horn in the transmission line of electricity chooses preset trick arc
Angle, and determine the pressure voltage of the preset arcing horn；
Second obtains module, for obtaining the pressure resistance of insulator chain according to the parameter of given insulator and the quantity of insulator
Value；
Computing module, for according to the pressure voltage of the preset arcing horn and the pressure voltage of the insulator chain, described in calculating
Validity Index parameter of the preset arcing horn to the insulator chain；
Judgment module, for determining arcing horn and insulator chain according to the Validity Index parameter.
6. selecting device according to claim 5, which is characterized in that the judgment module, for referring to when the validity
It, will be by the quantity of given insulator using the preset arcing horn as determining arcing horn when mark parameter meets preset value
The insulator chain of composition is as determining insulator chain.
7. selecting device according to claim 5 is applied to such as choosing method of any of claims 1-4,
It is characterized in that, the judgment module, for increasing the insulator when the Validity Index parameter is lower than preset value
Quantity executes step S2 and step S3 until the Validity Index parameter meets preset value, by the preset arcing horn work
For determining arcing horn, using the insulator chain being made of the quantity of the insulator after increasing as determining insulator chain；
For reducing the quantity of the insulator when the Validity Index parameter is higher than preset value, step S2 and step are executed
S3 meets preset value up to the Validity Index parameter, will be by subtracting using the preset arcing horn as determining arcing horn
The insulator chain of the quantity composition of insulator after few is as determining insulator chain.
8. selecting device according to claim 5, which is characterized in that the computing module is based on according to following formula (1)
Calculate UI50%, U is calculated according to following formula (2)A50%,
Wherein, UIAnd UANormal Distribution, stochastic variable UIFor the impulse flashover voltage of insulator chain, stochastic variable UATo recruit arc
The impulse flashover voltage at angle, UI50%For 50% discharge voltage of insulator chain, σIFor the standard deviation of insulator chain discharge voltage,
UA50%For 50% discharge voltage of arcing horn, σAFor the standard deviation of arcing horn discharge voltage；
The computing module is used to calculate the Validity Index parameter according to following formula (3):
Wherein,δ~N (0,1), Δ U=UA-UI,
σ is the standard deviation of Δ U,For the mean value of Δ U, P is probability-distribution function.
9. a kind of terminal, which is characterized in that including processor, memory and be stored on the memory and can be in the processing
The computer program run on device is realized when the computer program is executed by the processor as any in Claims 1-4
The step of choosing method described in item.
10. a kind of computer readable storage medium, which is characterized in that store computer journey on the computer readable storage medium
Sequence, the computer program realize the step of choosing method according to any one of claims 1 to 4 when being executed by processor
Suddenly.
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Cited By (1)
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| RU203898U1 (en) * | 2020-12-11 | 2021-04-26 | федеральное государственное бюджетное образовательное учреждение высшего образования "Национальный исследовательский университет "МЭИ" (ФГБОУ ВО "НИУ "МЭИ") | BREAKDOWN AND OVERLAPPED INSULATOR INDICATOR |
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