CN106771888A - A kind of dirty pressure-resistant altitude correcting method of ultra-high/extra-high voltage line insulator - Google Patents
A kind of dirty pressure-resistant altitude correcting method of ultra-high/extra-high voltage line insulator Download PDFInfo
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- CN106771888A CN106771888A CN201510797352.9A CN201510797352A CN106771888A CN 106771888 A CN106771888 A CN 106771888A CN 201510797352 A CN201510797352 A CN 201510797352A CN 106771888 A CN106771888 A CN 106771888A
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- G—PHYSICS
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- 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 invention provides a kind of dirty pressure-resistant altitude correcting method of ultra-high/extra-high voltage line insulator, including step 1：Carry out the artificial pollution test under the conditions of 0~4km of height above sea level, determine insulator umbrella shape modifying factor a and insulator serial type modifying factor b；Step 2：Height above sea level correction model k is built according to insulator umbrella shape modifying factor a, insulator serial type modifying factor b, height above sea level characteristic index n and height above sea level HH, obtain altitude correction factor.Compared with prior art, the dirty pressure-resistant altitude correcting method of a kind of ultra-high/extra-high voltage line insulator that the present invention is provided, different umbrella shapes, the altitude correction factor of different serial type insulators can be carried out to calculate, result of calculation is small compared with power industry enterprise target altitude correcting method error, more accurately filth insulation can be effectively instructed to configure, the safe and stable operation to circuit is significant.
Description
Technical field
The present invention relates to super/high voltage power transmission technical field, and in particular to a kind of dirty pressure-resistant height above sea level amendment side of ultra-high/extra-high voltage line insulator
Method.
Background technology
Line insulator is chronically exposed in air, surface can the accumulative filth of nature, dunghill reach it is a certain amount of after, snow, mist,
Pollution flashover may occur under the bad weathers such as drizzle, the safe and stable operation of circuit is had a strong impact on.Ultra-high/extra-high voltage transmission line of electricity can not
What is avoided will be by High aititude area, in high altitude localities, and transmission line of electricity will equally be subject to industrial pollution and salt, alkali etc. naturally dirty
Dye, and due to the reduction of high altitude localities atmospheric density, the reason such as ultraviolet irradiation is strong, insulator contamination external insulating strength is compared with Plain
Area is low, and with the rising of height above sea level, the pollution flashover voltage of insulator will also be reduced, and the amplitude of height above sea level reduction higher is bigger, therefore
Compared with plains region, the configuration of High aititude filthy area insulator will select level higher.In high altitude localities power transmission and transformation work
In Cheng Jianshe, in order to both ensure line insulation intensity, construction costs is saved again, it is necessary to which the insulation characterisitic to high altitude localities is carried out
Experimental study, Rule Summary proposes the modification method being adapted in a certain regional, a certain altitude ranges, and then instruct High aititude ground
The circuit design in area.
At present, filth insulation modification method in high altitude localities marks the correction formula in DLT368-2010 using power industry enterprise
KH=1-0.12n (H-1) is modified, and obtains altitude correction factor kH by height above sea level characteristic index n, and then carry out dirty pressure-resistant
Height above sea level amendment, characteristic index n relies on artificial pollution test to obtain, and the tolerance of Criterion of Polluted Insulator different altitude height is obtained by experiment
Voltage, by the relativity with air pressure, according to formulaObtain height above sea level characteristic index n, power industry enterprise mark
The n values that commensurate does not obtain are given in DLT368-2010 annex, but does not provide the experiment under different umbrella shapes and different serial types
As a result, research shows that insulator umbrella shape and serial type have an impact to characteristic index n, for different umbrella shapes, different serial type insulators
Dirty pressure-resistant height above sea level configuration, differentiation modification method need to be given.
The content of the invention
The need in order to meet prior art, the invention provides a kind of dirty pressure-resistant height above sea level amendment side of ultra-high/extra-high voltage line insulator
Method.
The technical scheme is that：
Methods described includes：
Step 1：Carry out the artificial pollution test under the conditions of 0~4km of height above sea level, determine insulator umbrella shape modifying factor a and insulator
Serial type modifying factor b；
Step 2：According to the insulator umbrella shape modifying factor a, insulator serial type modifying factor b, height above sea level characteristic index n and sea
Degree of lifting H builds height above sea level correction model kH, obtain altitude correction factor.
Preferably, insulator umbrella shape modifying factor a is determined in the step 1：
Step 111：Single I insulator strings respectively to four kinds of umbrella shapes under the conditions of 0~4km of height above sea level carry out artificial pollution test, obtain
To the characteristic index of every kind of umbrella insulator；Four kinds of umbrella insulators include plain edition insulator, double umbellate form insulators, three
Umbellate form insulator and compound type insulating；The compound type insulating attached bag includes two different umbrellas in umbrella footpath；
Step 112：On the basis of the characteristic index of plain edition insulator, determine respectively plain edition insulator, double umbellate form insulators,
The umbrella shape modifying factor of three-umbrella-type insulator and compound type insulating；
Preferably, insulator serial type modifying factor b is determined in the step 1：
Step 121：Insulator respectively to different umbrella shapes difference serial type under the conditions of 0~4km of height above sea level carries out artificial pollution test,
Obtain the characteristic index of every kind of insulator；
The insulator of the different umbrella shape difference serial types includes that umbrella shape is medium-sized single I insulator strings and list V insulator strings, umbrella
Shape is single I insulator strings, list V insulator strings and the strain insulator insulator string of double umbellate forms, and umbrella shape is single I insulator strings of three umbellate forms,
Umbrella shape is compound single I insulator strings；
Step 122：On the basis of the characteristic index of plain edition list I insulator strings, determine respectively medium-sized single I insulator strings and
The serial type modifying factor of single V insulator strings, the string of single I insulator strings, list V insulator strings and strain insulator insulator string of double umbellate forms
The serial type modifying factor of type modifying factor, the modifying factor of single I insulator strings of three umbellate forms, and compound single I insulator strings
Son；
Preferably, insulator umbrella shape modifying factor a is determined in the step step 1：
(1) the umbrella shape modifying factor a of plain edition insulator is determined1Including：
When height above sea level is 1≤H≤2km, it is 0.06~0.15mg/cm that salt is close2When, the umbrella shape modifying factor of plain edition insulator
a1=0.67~1；When height above sea level is 2≤H≤4km, it is 0.06~0.15mg/cm that salt is close2When, the umbrella of plain edition insulator
Shape modifying factor a1=1.22~1.53；
(2) the umbrella shape modifying factor a of double umbellate form insulators is determined2Including：
When height above sea level is 1≤H≤4km, it is 0.06~0.25mg/cm that salt is close2When, the umbrella shape modifying factor of double umbellate form insulators
a2=0.79~1.17；
(3) the umbrella shape modifying factor a of three-umbrella-type insulator is determined3Including：
When height above sea level is 1≤H≤4km, it is 0.15mg/cm that salt is close2When, the umbrella shape modifying factor of three-umbrella-type insulator
a3=0.71；
(4) the umbrella shape modifying factor a of compound type insulating is determined4Including：
When height above sea level is 1≤H≤2km, it is 0.06~0.25mg/cm that salt is close2When, the umbrella shape modifying factor of compound type insulating
a4=0.17~0.56；When height above sea level is 3≤H≤4km, it is 0.06~0.25mg/cm that salt is close2When, compound type insulating
Umbrella shape modifying factor a4=0.33~0.64；
Preferably, insulator serial type modifying factor b is determined in the step step 1：
(1) the insulator serial type modifying factor b of list I insulator strings is determined1=1：
(2) the insulator serial type modifying factor b of list V insulator strings is determined2：
When height above sea level is 1≤H≤2km, the serial type modifying factor b of plain edition insulator21=0.67；
When height above sea level is 3≤H≤4km, the serial type modifying factor b of plain edition insulator21=1.22；
When height above sea level is 1≤H≤4km, the serial type modifying factor b of double umbellate form insulators22=1.22；
(3) the insulator serial type modifying factor b of strain insulator insulator string is determined3：
When height above sea level is 1≤H≤4km, the serial type modifying factor of double umbellate form insulators；
Preferably, the height above sea level correction model kHExpression formula be：
kH=1-0.12 × a × b × n (H-1) (1)
It is H is height above sea level.
Compared with immediate prior art, excellent effect of the invention is：
The dirty pressure-resistant altitude correcting method of a kind of ultra-high/extra-high voltage line insulator that the present invention is provided, can carry out different umbrella shapes, difference
The altitude correction factor of serial type is calculated, and result of calculation is small compared with power industry enterprise target altitude correcting method error, can be more accurate
Effectively instruct filth insulation to configure, the safe and stable operation to circuit is significant.
Brief description of the drawings
The present invention is further described below in conjunction with the accompanying drawings.
Fig. 1：The dirty pressure-resistant altitude correcting method flow chart of a kind of ultra-high/extra-high voltage line insulator in the embodiment of the present invention.
Specific embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein it is identical from start to finish or
Similar label represents same or similar element or the element with same or like function.Below with reference to Description of Drawings
Embodiment is exemplary, it is intended to for explaining the present invention, and be not considered as limiting the invention.
A kind of embodiment of the dirty pressure-resistant altitude correcting method of ultra-high/extra-high voltage line insulator disclosed by the invention is as shown in figure 1, specific
For：
First, carry out the artificial pollution test under the conditions of 0~4km of height above sea level, determine insulator umbrella shape modifying factor a and insulator serial type
Modifying factor b.
1st, insulator umbrella shape modifying factor a is determined
(1) the single I insulator strings respectively to four kinds of umbrella shapes under the conditions of 0~4km of height above sea level carry out artificial pollution test, obtain every kind of
The characteristic index of umbrella insulator；Four kinds of umbrella insulators include that plain edition insulator, double umbellate form insulators, three umbellate forms are exhausted
Edge and compound type insulating, wherein compound type insulating attached bag includes two different umbrellas in umbrella footpath.
The parameters of plain edition insulator, double umbellate form insulators and three-umbrella-type insulator are as shown in table 1 in the present embodiment：
Table 1
The parameters of compound type insulating are as shown in table 2 in the present embodiment：
Table 2
(2) on the basis of the characteristic index of plain edition insulator, plain edition insulator, double umbellate form insulators, three umbrellas are determined respectively
The umbrella shape modifying factor of type insulator and compound type insulating.
The specific value of determination insulator umbrella shape modifying factor a is in the present embodiment：
①：Determine the umbrella shape modifying factor a of plain edition insulator1Including：
When height above sea level is 1≤H≤2km, it is 0.06~0.15mg/cm that salt is close2When, the umbrella shape modifying factor of plain edition insulator
a1=0.67~1；When height above sea level is 2≤H≤4km, it is 0.06~0.15mg/cm that salt is close2When, the umbrella of plain edition insulator
Shape modifying factor a1=1.22~1.53.
②：It is determined that the umbrella shape modifying factor a of double umbellate form insulators2Including：
When height above sea level is 1≤H≤4km, it is 0.06~0.25mg/cm that salt is close2When, the umbrella shape modifying factor of double umbellate form insulators
a2=0.79~1.17.
③：Determine the umbrella shape modifying factor a of three-umbrella-type insulator3Including：
When height above sea level is 1≤H≤4km, it is 0.15mg/cm that salt is close2When, the umbrella shape modifying factor of three-umbrella-type insulator
a3=0.71.
④：Determine the umbrella shape modifying factor a of compound type insulating4Including：
When height above sea level is 1≤H≤2km, it is 0.06~0.25mg/cm that salt is close2When, the umbrella shape modifying factor of compound type insulating
a4=0.17~0.56；When height above sea level is 3≤H≤4km, it is 0.06~0.25mg/cm that salt is close2When, compound type insulating
Umbrella shape modifying factor a4=0.33~0.64.
2nd, insulator serial type modifying factor b is determined
(1) insulator respectively to different umbrella shapes difference serial type under the conditions of 0~4km of height above sea level carries out artificial pollution test, obtains
The characteristic index of every kind of insulator；
In the present embodiment, the insulator of different umbrella shape difference serial types includes that umbrella shape is that medium-sized single I insulator strings and list V strings are exhausted
Edge, umbrella shape is single I insulator strings, list V insulator strings and the strain insulator insulator string of double umbellate forms, and umbrella shape is single I of three umbellate forms
Insulator string, umbrella shape is compound single I insulator strings.
(3) on the basis of the characteristic index of plain edition list I insulator strings, medium-sized single I insulator strings and list V are determined respectively
The serial type modifying factor of insulator string, the serial type of single I insulator strings, list V insulator strings and strain insulator insulator string of double umbellate forms is repaiied
The serial type modifying factor of positive divisor, the modifying factor of single I insulator strings of three umbellate forms, and compound single I insulator strings.
The specific value of determination insulator serial type modifying factor b is in the present embodiment：
①：It is determined that the insulator serial type modifying factor b of list I insulator strings1=1.
②：It is determined that the insulator serial type modifying factor b of list V insulator strings2：
When height above sea level is 1≤H≤2km, the serial type modifying factor b of plain edition insulator21=0.67；
When height above sea level is 3≤H≤4km, the serial type modifying factor b of plain edition insulator21=1.22；
When height above sea level is 1≤H≤4km, the serial type modifying factor b of double umbellate form insulators22=1.22；
③：Determine the insulator serial type modifying factor b of strain insulator insulator string3：
When height above sea level is 1≤H≤4km, the serial type modifying factor of double umbellate form insulators.
2nd, the present invention based on the insulator artificial pollution test of 0~4km of height above sea level, by carry out include analog conducting wire, gold utensil,
Artificial pollution test under the high altitude condition of insulator, proposes to be adapted to the dirty pressure-resistant height above sea level of insulator of different umbrella shapes, different serial types
Correction model, i.e., according to insulator umbrella shape modifying factor a, insulator serial type modifying factor b, height above sea level characteristic index n and height above sea level
Degree H builds height above sea level correction model kH, obtain altitude correction factor.
The present embodiment intermediate altitude correction model kHExpression formula be：
kH=1-0.12 × a × b × n (H-1) (1)
It is H is height above sea level.
The altitude correction factor k for being calculated height above sea level correction model disclosed by the invention of sampling in the present embodimentH1, and using electricity
The altitude correction factor k that Lixing industry enterprise mark is obtainedH2, carry out the correction factor that dirty pressure-resistant height above sea level amendment experiment is obtained with actual respectively
kHIt is compared, concrete outcome is：
1st, different umbrella shape altitude correction factor comparing results are as shown in table 3：
Table 3
Correction factor k can be determined by table 3H1With correction factor kHError in -5.98%~3.14%, and correction factor kH2With
Correction factor kHError -17.44%~26.47%, altitude correcting method error disclosed by the invention is small, the degree of accuracy is high.
2nd, different serial type altitude correction factor comparing results are as shown in table 4：
Table 4
Correction factor k can be determined by table 4H1With correction factor kHError in -5.98%~4.05%, and correction factor kH2With
Correction factor kHError -2.41%~26.47%, altitude correcting method error disclosed by the invention is small, the degree of accuracy is high.
Finally it should be noted that：Described embodiment is only some embodiments of the present application, rather than whole embodiments.
Based on the embodiment in the application, this area logical technical staff of spectrum obtained under the premise of creative work is not made it is all its
His embodiment, belongs to the scope of the application protection.
Claims (6)
1. the dirty pressure-resistant altitude correcting method of a kind of ultra-high/extra-high voltage line insulator, it is characterised in that methods described includes：
Step 1：Carry out the artificial pollution test under the conditions of 0~4km of height above sea level, determine insulator umbrella shape modifying factor a and insulator
Serial type modifying factor b；
Step 2：According to the insulator umbrella shape modifying factor a, insulator serial type modifying factor b, height above sea level characteristic index n and sea
Degree of lifting H builds height above sea level correction model kH, obtain altitude correction factor.
2. the dirty pressure-resistant altitude correcting method of a kind of ultra-high/extra-high voltage line insulator as claimed in claim 1, it is characterised in that
Insulator umbrella shape modifying factor a is determined in the step 1：
Step 111：Single I insulator strings respectively to four kinds of umbrella shapes under the conditions of 0~4km of height above sea level carry out artificial pollution test, obtain
To the characteristic index of every kind of umbrella insulator；Four kinds of umbrella insulators include plain edition insulator, double umbellate form insulators, three
Umbellate form insulator and compound type insulating；The compound type insulating attached bag includes two different umbrellas in umbrella footpath；
Step 112：On the basis of the characteristic index of plain edition insulator, determine respectively plain edition insulator, double umbellate form insulators,
The umbrella shape modifying factor of three-umbrella-type insulator and compound type insulating.
3. the dirty pressure-resistant altitude correcting method of a kind of ultra-high/extra-high voltage line insulator as claimed in claim 1, it is characterised in that
Insulator serial type modifying factor b is determined in the step 1：
Step 121：Insulator respectively to different umbrella shapes difference serial type under the conditions of 0~4km of height above sea level carries out artificial pollution test,
Obtain the characteristic index of every kind of insulator；The insulator of the different umbrella shape difference serial types includes that umbrella shape is exhausted for medium-sized single I strings
Edge and list V insulator strings, umbrella shape are single I insulator strings, list V insulator strings and the strain insulator insulator string of double umbellate forms, umbrella shape
It is single I insulator strings of three umbellate forms, umbrella shape is compound single I insulator strings；
Step 122：On the basis of the characteristic index of plain edition list I insulator strings, determine respectively medium-sized single I insulator strings and
The serial type modifying factor of single V insulator strings, the string of single I insulator strings, list V insulator strings and strain insulator insulator string of double umbellate forms
The serial type modifying factor of type modifying factor, the modifying factor of single I insulator strings of three umbellate forms, and compound single I insulator strings
Son.
4. the dirty pressure-resistant altitude correcting method of a kind of ultra-high/extra-high voltage line insulator as claimed in claim 1, it is characterised in that
Determine insulator umbrella shape modifying factor a in the step step 1：
(1) the umbrella shape modifying factor a of plain edition insulator is determined1Including：
When height above sea level is 1≤H≤2km, it is 0.06~0.15mg/cm that salt is close2When, the umbrella shape modifying factor of plain edition insulator
a1=0.67~1；When height above sea level is 2≤H≤4km, it is 0.06~0.15mg/cm that salt is close2When, the umbrella of plain edition insulator
Shape modifying factor a1=1.22~1.53；
(2) the umbrella shape modifying factor a of double umbellate form insulators is determined2Including：
When height above sea level is 1≤H≤4km, it is 0.06~0.25mg/cm that salt is close2When, the umbrella shape modifying factor of double umbellate form insulators
a2=0.79~1.17；
(3) the umbrella shape modifying factor a of three-umbrella-type insulator is determined3Including：
When height above sea level is 1≤H≤4km, it is 0.15mg/cm that salt is close2When, the umbrella shape modifying factor of three-umbrella-type insulator
a3=0.71；
(4) the umbrella shape modifying factor a of compound type insulating is determined4Including：
When height above sea level is 1≤H≤2km, it is 0.06~0.25mg/cm that salt is close2When, the umbrella shape modifying factor of compound type insulating
a4=0.17~0.56；When height above sea level is 3≤H≤4km, it is 0.06~0.25mg/cm that salt is close2When, compound type insulating
Umbrella shape modifying factor a4=0.33~0.64.
5. the dirty pressure-resistant altitude correcting method of a kind of ultra-high/extra-high voltage line insulator as claimed in claim 1, it is characterised in that
Determine insulator serial type modifying factor b in the step step 1：
(1) the insulator serial type modifying factor b of list I insulator strings is determined1=1：
(2) the insulator serial type modifying factor b of list V insulator strings is determined2：
When height above sea level is 1≤H≤2km, the serial type modifying factor b of plain edition insulator21=0.67；
When height above sea level is 3≤H≤4km, the serial type modifying factor b of plain edition insulator21=1.22；
When height above sea level is 1≤H≤4km, the serial type modifying factor b of double umbellate form insulators22=1.22；
(3) the insulator serial type modifying factor b of strain insulator insulator string is determined3：
When height above sea level is 1≤H≤4km, the serial type modifying factor of double umbellate form insulators.
6. the dirty pressure-resistant altitude correcting method of a kind of ultra-high/extra-high voltage line insulator as claimed in claim 1, it is characterised in that
Height above sea level correction model k described in the step 2HExpression formula be：
kH=1-0.12 × a × b × n (H-1) (1)
Wherein, H is height above sea level.
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| CN112130035A (en) * | 2020-09-11 | 2020-12-25 | 国网福建省电力有限公司检修分公司 | Insulator discharge sound wave and electromagnetic wave detection method and device based on unmanned aerial vehicle |
| CN113514013A (en) * | 2021-04-20 | 2021-10-19 | 广西电网有限责任公司南宁供电局 | Sag measuring method, sag measuring device, computer equipment and storage medium |
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