CN110133460A - The ageing properties of zinc oxide resistance sheet test appraisal procedure - Google Patents
The ageing properties of zinc oxide resistance sheet test appraisal procedure Download PDFInfo
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- CN110133460A CN110133460A CN201910462988.6A CN201910462988A CN110133460A CN 110133460 A CN110133460 A CN 110133460A CN 201910462988 A CN201910462988 A CN 201910462988A CN 110133460 A CN110133460 A CN 110133460A
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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
- G01R31/003—Environmental or reliability tests
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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
- G01R31/1236—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 surge arresters
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Abstract
The invention discloses a kind of ageing properties of zinc oxide resistance sheet to test appraisal procedure, parameter before the assessment including obtaining zinc oxide resistance sheet to be tested and assessed；The zinc oxide resistance sheet for treating assessment carries out ageing properties test；Parameter after the assessment of zinc oxide resistance sheet after obtaining assessment；Calculate the aging coefficient of zinc oxide resistance sheet to be tested and assessed；The zinc oxide resistance sheet for treating assessment carries out ageing properties assessment.The present invention passes through the method for being stepped up voltage and environment temperature stage by stage, the actual ageing process of artifical resistance piece；The method of the present invention has comprehensively considered three kinds of important performance characteristics of zinc oxide resistance sheet simultaneously, more scientific, and the overall merit ageing properties of resistor disc；Finally, the method for the present invention can be quickly obtained the aging coefficient of resistor disc, efficiency is higher and high reliablity.
Description
Technical field
Present invention relates particularly to a kind of ageing properties of zinc oxide resistance sheet to test appraisal procedure.
Background technique
With the gradually expansion of power grid, many transmission lines of electricity have all been stretched over some mountain areas with a varied topography, climate variability.
When the route of these geographical environment Special sections meets with the bad weathers such as thunderstorm, route is easy to that lightning stroke trip, thunder occurs
Line-outage contingency is hit, the stable operation of power grid has been seriously affected.Therefore power grid largely adds line thunder protection equipment, zinc oxide resistance sheet
Since its excellent nonlinear characteristic is widely used in electric system lightning protection.
The electric parameter of zinc oxide lightning protection device includes through-flow energy, residual voltage, 1mA reference voltage, external insulation parameter etc..Oxygen
Change the long-term charging operation of zinc resistor disc, projected life is up to more than ten years or even decades, and aging characteristics need to study.It is existing
Aging characteristics research method, at specific temperature and voltage carry out long-time aging tolerance, analyze the change of its leakage current
Change, to obtain the ageing properties of such resistor disc, the testing time is up to 1000h or even longer.Since the aging of resistor disc is
More slow process, voltage and temperature are all variations in actual ageing process, and gradually with later period resistor disc
Aging, internal Leakage Current and temperature rise are all gradually increasing, but existing test method does not simulate this process effectively, so that
The aging characteristics of resistor disc and actual conditions difference, influence the operation of resistor disc.Furthermore existing aging coefficient is only to letting out
Leakage current is evaluated, the science of failing, the ageing properties for effectively determining resistor disc.
Summary of the invention
The purpose of the present invention is to provide a kind of high reliablity and can effectively to the ageing properties of zinc oxide resistance sheet into
The ageing properties of the zinc oxide resistance sheet of row test assessment test appraisal procedure.
The ageing properties of this zinc oxide resistance sheet provided by the invention test appraisal procedure, include the following steps:
S1. the zinc oxide resistance sheet for treating assessment is tested, to obtain the assessment of zinc oxide resistance sheet to be tested and assessed
Preceding parameter；
S2. under different temperatures environment, the zinc oxide resistance sheet load different voltages grade of assessment is treated, aging is carried out
It can test；
S3. after step S2 is completed, the zinc oxide resistance sheet for treating assessment again is tested, thus after obtaining assessment
Zinc oxide resistance sheet assessment after parameter；
S4. parameter after the assessment that parameter and step S3 are obtained before the assessment obtained according to step S1, calculates oxygen to be tested and assessed
Change the aging coefficient of zinc resistor disc；
S5. according to the calculated result of step S4, the zinc oxide resistance sheet for treating assessment carries out ageing properties assessment.
Parameter before assessment described in step S1 specifically includes nonlinear factor and assessment before assessment preceding Leakage Current, assessment
Preceding relative dielectric constant.
The zinc oxide resistance sheet that assessment is treated described in step S1 is tested, to obtain ZnO resistors to be tested and assessed
Parameter before the assessment of piece is specially tested using following steps:
A. the voltage U of zinc oxide resistance sheet to be tested and assessed under 1mA electric current is tested1mA；
B. zinc oxide resistance sheet to be tested and assessed is tested in 0.75U1mALeakage Current I under voltage0；
C. the relative dielectric constant ε of zinc oxide resistance sheet to be tested and assessed at 50 hz is tested0；
D. the nonlinear factor a of zinc oxide resistance sheet to be tested and assessed is calculated using following formula0:
In formulaFor the voltage of zinc oxide resistance sheet to be tested and assessed under 1mA electric current every square centimeter,For the voltage of zinc oxide resistance sheet to be tested and assessed under 0.1mA electric current every square centimeter.
Described in step S2 under different temperatures environment, the zinc oxide resistance sheet load different voltages grade of assessment is treated,
Ageing properties test is carried out, specially carries out ageing properties test in accordance with the following steps:
A. in the case where environment temperature is 80~100 DEG C, apply 0.2~0.4 times at zinc oxide resistance sheet both ends to be tested and assessed
Voltage U under 1mA electric current1mA, and application time is 6~12h；
B. in the case where environment temperature is 100~130 DEG C, apply 0.4~0.6 times at zinc oxide resistance sheet both ends to be tested and assessed
Voltage U under 1mA electric current1mA, and application time is 12~20h；
C. in the case where environment temperature is 120~150 DEG C, apply 0.6~0.8 times at zinc oxide resistance sheet both ends to be tested and assessed
Voltage U under 1mA electric current1mA, and application time is 15~30h；
D. in the case where environment temperature is 150~200 DEG C, apply 0.8~1.0 times at zinc oxide resistance sheet both ends to be tested and assessed
Voltage U under 1mA electric current1mA, and application time is 6~15h；
In above-mentioned each step, environment temperature, application 1mA electric current under voltage U1mAMultiple and application time,
It is voluntarily determined by tester.
Parameter after assessment described in step S3 specifically includes nonlinear factor and assessment after Leakage Current, assessment after testing and assessing
Relative dielectric constant afterwards.
The zinc oxide resistance sheet that assessment is treated described in step S3 is tested, to obtain the ZnO resistors after assessment
Parameter after the assessment of piece is specially tested and is obtained using following steps:
(1) zinc oxide resistance sheet wait test and assess is tested after carrying out burn-in test described in step S2, under 1mA electric current
Voltage U after assessment1mA'；
(2) zinc oxide resistance sheet wait test and assess is tested after carrying out burn-in test described in step S2, in 0.75U1mAVoltage
Under assessment after Leakage Current I0'；
(3) zinc oxide resistance sheet wait test and assess is tested after carrying out burn-in test described in step S2, survey at 50 hz
Comment rear relative dielectric constant ε0'；
(4) zinc oxide resistance sheet to be tested and assessed after carrying out burn-in test described in step S2 is calculated using following formula
Nonlinear factor a after assessment0':
In formulaFor after carrying out burn-in test described in step S2, zinc oxide resistance sheet to be tested and assessed is put down often
Voltage after assessment under square centimetre of 1mA electric current；It is to be tested and assessed after the burn-in test described in progress step S2
Zinc oxide resistance sheet voltage after the assessment under 0.1mA electric current every square centimeter.
Aging coefficient described in step S4 specifically includes Leakage Current aging coefficient, nonlinear factor aging coefficient and phase
To dielectric constant aging coefficient.
The aging coefficient of zinc oxide resistance sheet to be tested and assessed is calculated described in step S4, is specially carried out using following formula
It calculates:
In formula, k1For Leakage Current aging coefficient, k2For nonlinear factor aging coefficient, k3For relative dielectric constant aging
Coefficient；I0' it is zinc oxide resistance sheet to be tested and assessed after carrying out burn-in test described in step S2 in 0.75U1mASurvey under voltage
Comment rear Leakage Current, a0' it is non-after the assessment for the zinc oxide resistance sheet tested and assessed after carrying out burn-in test described in step S2
Linear coefficient, ε0' it is the assessment of zinc oxide resistance sheet to be tested and assessed after carrying out burn-in test described in step S2 at 50 hz
Relative dielectric constant afterwards；I0It is zinc oxide resistance sheet to be tested and assessed before burn-in test in 0.75U1mAIt is revealed before assessment under voltage
Electric current, ε0For relative dielectric constant before the assessment of zinc oxide resistance sheet to be tested and assessed before burn-in test at 50 hz；a0For aging survey
Nonlinear factor before the assessment of zinc oxide resistance sheet to be tested and assessed before examination.
The zinc oxide resistance sheet that assessment is treated described in step S5 carries out ageing properties assessment, specially uses following steps
It tests and assesses:
1) grading of degree of aging is carried out using the zinc oxide resistance sheet that following rule treats assessment:
Slight aging: Leakage Current aging coefficient k1≤ 1, nonlinear factor aging coefficient k2≤ 2, relative dielectric constant is old
Change coefficient k3≤10；
Mittlere alterung: 1 < k of Leakage Current aging coefficient1≤ 2,2 < k of nonlinear factor aging coefficient2≤ 3, opposite dielectric
10 < k of constant aging coefficient3≤30；
Severe aging: Leakage Current aging coefficient k1> 2, nonlinear factor aging coefficient k2> 3, relative dielectric constant are old
Change coefficient k3> 30；
For any zinc oxide resistance sheet to be tested and assessed, in Leakage Current aging coefficient k1, nonlinear factor aging coefficient k2
With relative dielectric constant aging coefficient k3In three parameters, grade corresponding to the parameter of three parameter middle grade most serious is taken to make
For the grade of the zinc oxide resistance sheet to be tested and assessed；The severity of grade is defined as: severe aging > mittlere alterung > slight
Aging；Grade includes slight aging, mittlere alterung and severe aging；
2) the synthesis aging coefficient of zinc oxide resistance sheet to be tested and assessed is calculated using weighted sum algorithm.
The synthesis aging coefficient that zinc oxide resistance sheet to be tested and assessed is calculated using weighted sum algorithm, is specially adopted
Comprehensive aging coefficient K is calculated with following formula:
K=η1k1+η2k2+η3k3
K in formula1For Leakage Current aging coefficient, the k of zinc oxide resistance sheet to be tested and assessed2For ZnO resistors to be tested and assessed
The nonlinear factor aging coefficient of piece, k3For the relative dielectric constant aging coefficient of zinc oxide resistance sheet to be tested and assessed, η1、η2With
η3For weighted value.
The ageing properties of this zinc oxide resistance sheet provided by the invention test appraisal procedure, by being stepped up stage by stage
The method of voltage and environment temperature, the actual ageing process of artifical resistance piece；The method of the present invention has comprehensively considered zinc oxide simultaneously
Three kinds of important performance characteristics of resistor disc, it is more scientific, and the overall merit ageing properties of resistor disc；Finally, this hair
Bright method can be quickly obtained the aging coefficient of resistor disc, and efficiency is higher and high reliablity.
Detailed description of the invention
Fig. 1 is the method flow schematic diagram of the method for the present invention.
Specific embodiment
It is as shown in Figure 1 the method flow schematic diagram of the method for the present invention: this zinc oxide resistance sheet provided by the invention
Ageing properties test appraisal procedure, include the following steps:
S1. the zinc oxide resistance sheet for treating assessment is tested, to obtain the assessment of zinc oxide resistance sheet to be tested and assessed
Preceding parameter specifically includes nonlinear factor and preceding relative dielectric constant of testing and assessing before assessment preceding Leakage Current, assessment；
It is tested using following steps:
A. the voltage U of zinc oxide resistance sheet to be tested and assessed under 1mA electric current is tested1mA；
B. zinc oxide resistance sheet to be tested and assessed is tested in 0.75U1mALeakage Current I under voltage0；
C. the relative dielectric constant ε of zinc oxide resistance sheet to be tested and assessed at 50 hz is tested0；
D. the nonlinear factor a of zinc oxide resistance sheet to be tested and assessed is calculated using following formula0:
In formulaFor the voltage of zinc oxide resistance sheet to be tested and assessed under 1mA electric current every square centimeter,For the voltage of zinc oxide resistance sheet to be tested and assessed under 0.1mA electric current every square centimeter；
S2. under different temperatures environment, the zinc oxide resistance sheet load different voltages grade of assessment is treated, aging is carried out
It can test；
Ageing properties test is specially carried out in accordance with the following steps:
A. in the case where environment temperature is 80~100 DEG C, apply 0.2~0.4 times at zinc oxide resistance sheet both ends to be tested and assessed
Voltage U under 1mA electric current1mA, and application time is 6~12h；
B. in the case where environment temperature is 100~130 DEG C, apply 0.4~0.6 times at zinc oxide resistance sheet both ends to be tested and assessed
Voltage U under 1mA electric current1mA, and application time is 12~20h；
C. in the case where environment temperature is 120~150 DEG C, apply 0.6~0.8 times at zinc oxide resistance sheet both ends to be tested and assessed
Voltage U under 1mA electric current1mA, and application time is 15~30h；
D. in the case where environment temperature is 150~200 DEG C, apply 0.8~1.0 times at zinc oxide resistance sheet both ends to be tested and assessed
Voltage U under 1mA electric current1mA, and application time is 6~15h；
In above-mentioned each step, environment temperature, application 1mA electric current under voltage U1mAMultiple and application time,
It is voluntarily determined by tester；
S3. after step S2 is completed, the zinc oxide resistance sheet for treating assessment again is tested, thus after obtaining assessment
Zinc oxide resistance sheet assessment after parameter, specifically include after assessment after Leakage Current, assessment phase after nonlinear factor and assessment
To dielectric constant；
It is tested and is obtained using following steps:
(1) zinc oxide resistance sheet wait test and assess is tested after carrying out burn-in test described in step S2, under 1mA electric current
Voltage U after assessment1mA'；
(2) zinc oxide resistance sheet wait test and assess is tested after carrying out burn-in test described in step S2, in 0.75U1mAVoltage
Under assessment after Leakage Current I0'；
(3) zinc oxide resistance sheet wait test and assess is tested after carrying out burn-in test described in step S2, survey at 50 hz
Comment rear relative dielectric constant ε0'；
(4) zinc oxide resistance sheet to be tested and assessed after carrying out burn-in test described in step S2 is calculated using following formula
Nonlinear factor a after assessment0':
In formulaFor after carrying out burn-in test described in step S2, zinc oxide resistance sheet to be tested and assessed is put down often
Voltage after assessment under square centimetre of 1mA electric current；It is to be tested and assessed after the burn-in test described in progress step S2
Zinc oxide resistance sheet voltage after the assessment under 0.1mA electric current every square centimeter；
S4. parameter after the assessment that parameter and step S3 are obtained before the assessment obtained according to step S1, calculates oxygen to be tested and assessed
It is normal to specifically include Leakage Current aging coefficient, nonlinear factor aging coefficient and opposite dielectric for the aging coefficient for changing zinc resistor disc
Number aging coefficient；It is calculated using following formula:
In formula, k1For Leakage Current aging coefficient, k2For nonlinear factor aging coefficient, k3For relative dielectric constant aging
Coefficient；I0' it is zinc oxide resistance sheet to be tested and assessed after carrying out burn-in test described in step S2 in 0.75U1mASurvey under voltage
Comment rear Leakage Current, a0' it is non-after the assessment for the zinc oxide resistance sheet tested and assessed after carrying out burn-in test described in step S2
Linear coefficient, ε0' it is the assessment of zinc oxide resistance sheet to be tested and assessed after carrying out burn-in test described in step S2 at 50 hz
Relative dielectric constant afterwards；I0It is zinc oxide resistance sheet to be tested and assessed before burn-in test in 0.75U1mAIt is revealed before assessment under voltage
Electric current, ε0For relative dielectric constant before the assessment of zinc oxide resistance sheet to be tested and assessed before burn-in test at 50 hz；a0For aging survey
Nonlinear factor before the assessment of zinc oxide resistance sheet to be tested and assessed before examination；
S5. according to the calculated result of step S4, the zinc oxide resistance sheet for treating assessment carries out ageing properties assessment；Specially
It is tested and assessed using following steps:
1) grading of degree of aging is carried out using the zinc oxide resistance sheet that following rule treats assessment:
Slight aging: Leakage Current aging coefficient k1≤ 1, nonlinear factor aging coefficient k2≤ 2, relative dielectric constant is old
Change coefficient k3≤10；
Mittlere alterung: 1 < k of Leakage Current aging coefficient1≤ 2,2 < k of nonlinear factor aging coefficient2≤ 3, opposite dielectric
10 < k of constant aging coefficient3≤30；
Severe aging: Leakage Current aging coefficient k1> 2, nonlinear factor aging coefficient k2> 3, relative dielectric constant are old
Change coefficient k3> 30；
For any zinc oxide resistance sheet to be tested and assessed, in Leakage Current aging coefficient k1, nonlinear factor aging coefficient k2
With relative dielectric constant aging coefficient k3In three parameters, grade corresponding to the parameter of three parameter middle grade most serious is taken to make
For the grade of the zinc oxide resistance sheet to be tested and assessed；The severity of grade is defined as: severe aging > mittlere alterung > slight
Aging；Grade includes slight aging, mittlere alterung and severe aging；
2) the synthesis aging coefficient of zinc oxide resistance sheet to be tested and assessed is calculated using weighted sum algorithm.
The synthesis aging coefficient that zinc oxide resistance sheet to be tested and assessed is calculated using weighted sum algorithm, is specially adopted
Comprehensive aging coefficient K is calculated with following formula:
K=η1k1+η2k2+η3k3
K in formula1For Leakage Current aging coefficient, the k of zinc oxide resistance sheet to be tested and assessed2For ZnO resistors to be tested and assessed
The nonlinear factor aging coefficient of piece, k3For the relative dielectric constant aging coefficient of zinc oxide resistance sheet to be tested and assessed, η1、η2With
η3For weighted value.
The method of the present invention is further described with one embodiment below:
Test relative dielectric constant by nonlinear factor before Leakage Current, assessment before the assessment of test specimen and before testing and assessing；
Then, burn-in test is carried out:
It is 85 DEG C in environment temperature, resistor disc both ends apply 0.3 times of 1mA reference voltage, application time 10h；
It is 120 DEG C in environment temperature, resistor disc both ends apply 0.6 times of 1mA reference voltage, application time 18h；
It is 145 DEG C in environment temperature, resistor disc both ends apply 0.7 times of 1mA reference voltage, application time 28h；
It is 180 DEG C in environment temperature, resistor disc both ends apply 1 times of 1mA reference voltage, application time 12h；
After testing, parameter is as shown in table 1；Shown in aging coefficient and degree of aging and table 2.
1 aging coefficient schematic table of table
2 aging coefficient of table and degree of aging schematic table
| Type | k1 | k2 | k3 | Degree of aging | k |
| Sample 1 | 3.40 | 2.55 | 21.34 | Severe aging | 1.97 |
| Sample 2 | 6.06 | 2.43 | 33.95 | Severe aging | 2.95 |
| Sample 3 | 14.31 | 3.76 | 54.09 | Severe aging | 5.10 |
| Sample 4 | 0.61 | 1.09 | 9.34 | Slight aging | 0.78 |
| Sample 5 | 0.97 | 0.61 | 7.15 | Slight aging | 0.61 |
Analysis shows 1 > sample of sample 5 > sample, 4 > sample, 2 > sample 3 in terms of ageing properties.Wherein sample 4 and sample
5 degree of aging is slight aging, and the degree of aging of remaining sample is serious aging.
Claims (10)
1. a kind of ageing properties of zinc oxide resistance sheet test appraisal procedure, include the following steps:
S1. the zinc oxide resistance sheet for treating assessment is tested, to join before obtaining the assessment of zinc oxide resistance sheet to be tested and assessed
Number；
S2. under different temperatures environment, the zinc oxide resistance sheet load different voltages grade of assessment is treated, ageing properties survey is carried out
Examination；
S3. after step S2 is completed, the zinc oxide resistance sheet for treating assessment again is tested, to obtain the oxygen after assessment
Parameter after the assessment of change zinc resistor disc；
S4. parameter after the assessment that parameter and step S3 are obtained before the assessment obtained according to step S1, calculates zinc oxide to be tested and assessed
The aging coefficient of resistor disc；
S5. according to the calculated result of step S4, the zinc oxide resistance sheet for treating assessment carries out ageing properties assessment.
2. the ageing properties of zinc oxide resistance sheet according to claim 1 test appraisal procedure, it is characterised in that step S1
Parameter before the assessment specifically includes nonlinear factor and preceding relative dielectric constant of testing and assessing before assessment preceding Leakage Current, assessment.
3. the ageing properties of zinc oxide resistance sheet according to claim 2 test appraisal procedure, it is characterised in that step S1
The zinc oxide resistance sheet for treating assessment is tested, to join before obtaining the assessment of zinc oxide resistance sheet to be tested and assessed
Number is specially tested using following steps:
A. the voltage U of zinc oxide resistance sheet to be tested and assessed under 1mA electric current is tested1mA；
B. zinc oxide resistance sheet to be tested and assessed is tested in 0.75U1mALeakage Current I under voltage0；
C. the relative dielectric constant ε of zinc oxide resistance sheet to be tested and assessed at 50 hz is tested0；
D. the nonlinear factor a of zinc oxide resistance sheet to be tested and assessed is calculated using following formula0:
In formulaFor the voltage of zinc oxide resistance sheet to be tested and assessed under 1mA electric current every square centimeter,For
The voltage of zinc oxide resistance sheet to be tested and assessed under 0.1mA electric current every square centimeter.
4. the ageing properties of zinc oxide resistance sheet described according to claim 1~one of 3 test appraisal procedure, it is characterised in that
Described in step S2 under different temperatures environment, the zinc oxide resistance sheet load different voltages grade of assessment is treated, aging is carried out
Performance test specially carries out ageing properties test in accordance with the following steps:
A. in the case where environment temperature is 80~100 DEG C, apply 0.2~0.4 times of 1mA electricity at zinc oxide resistance sheet both ends to be tested and assessed
The voltage U flowed down1mA, and application time is 6~12h；
B. in the case where environment temperature is 100~130 DEG C, apply 0.4~0.6 times of 1mA at zinc oxide resistance sheet both ends to be tested and assessed
Voltage U under electric current1mA, and application time is 12~20h；
C. in the case where environment temperature is 120~150 DEG C, apply 0.6~0.8 times of 1mA at zinc oxide resistance sheet both ends to be tested and assessed
Voltage U under electric current1mA, and application time is 15~30h；
D. in the case where environment temperature is 150~200 DEG C, apply 0.8~1.0 times of 1mA at zinc oxide resistance sheet both ends to be tested and assessed
Voltage U under electric current1mA, and application time is 6~15h；
In above-mentioned each step, environment temperature, application 1mA electric current under voltage U1mAMultiple and application time, by
Tester voluntarily determines.
5. the ageing properties of zinc oxide resistance sheet according to claim 3 test appraisal procedure, it is characterised in that step S3
Parameter after the assessment specifically includes after assessment after Leakage Current, assessment relative dielectric constant after nonlinear factor and assessment.
6. the ageing properties of zinc oxide resistance sheet according to claim 5 test appraisal procedure, it is characterised in that step S3
The zinc oxide resistance sheet for treating assessment is tested, thus obtain assessment after zinc oxide resistance sheet assessment after join
Number is specially tested and is obtained using following steps:
(1) assessment of the zinc oxide resistance sheet wait test and assess after carrying out burn-in test described in step S2, under 1mA electric current is tested
Voltage U afterwards1mA'；
(2) zinc oxide resistance sheet wait test and assess is tested after carrying out burn-in test described in step S2, in 0.75U1mAUnder voltage
Leakage Current I after assessment0'；
(3) zinc oxide resistance sheet wait test and assess is tested after carrying out burn-in test described in step S2, after assessment at 50 hz
Relative dielectric constant ε0'；
(4) assessment of zinc oxide resistance sheet to be tested and assessed after carrying out burn-in test described in step S2 is calculated using following formula
Nonlinear factor a afterwards0':
In formulaFor after carrying out burn-in test described in step S2, zinc oxide resistance sheet to be tested and assessed is at every square li
Voltage after assessment under rice 1mA electric current；After the burn-in test described in progress step S2, oxidation to be tested and assessed
Zinc resistor disc voltage after the assessment under 0.1mA electric current every square centimeter.
7. the ageing properties of zinc oxide resistance sheet according to claim 6 test appraisal procedure, it is characterised in that step S4
The aging coefficient specifically includes Leakage Current aging coefficient, nonlinear factor aging coefficient and relative dielectric constant aging
Coefficient.
8. the ageing properties of zinc oxide resistance sheet according to claim 7 test appraisal procedure, it is characterised in that step S4
The aging coefficient for calculating zinc oxide resistance sheet to be tested and assessed specially is calculated using following formula:
In formula, k1For Leakage Current aging coefficient, k2For nonlinear factor aging coefficient, k3For relative dielectric constant aging coefficient；
I0' it is zinc oxide resistance sheet to be tested and assessed after carrying out burn-in test described in step S2 in 0.75U1mAAfter assessment under voltage
Leakage Current, a0' it is non-linear after the assessment for the zinc oxide resistance sheet tested and assessed after carrying out burn-in test described in step S2
Coefficient, ε0' for the phase after carrying out the assessment of zinc oxide resistance sheet at 50 hz described in step S2 after burn-in test wait test and assess
To dielectric constant；I0It is zinc oxide resistance sheet to be tested and assessed before burn-in test in 0.75U1mALeakage Current before assessment under voltage,
ε0For relative dielectric constant before the assessment of zinc oxide resistance sheet to be tested and assessed before burn-in test at 50 hz；a0Before burn-in test
Nonlinear factor before the assessment of zinc oxide resistance sheet to be tested and assessed.
9. the ageing properties of zinc oxide resistance sheet according to claim 8 test appraisal procedure, it is characterised in that step S5
The zinc oxide resistance sheet for treating assessment carries out ageing properties assessment, is specially tested and assessed using following steps:
1) grading of degree of aging is carried out using the zinc oxide resistance sheet that following rule treats assessment:
Slight aging: Leakage Current aging coefficient k1≤ 1, nonlinear factor aging coefficient k2≤ 2, relative dielectric constant aging system
Number k3≤10；
Mittlere alterung: 1 < k of Leakage Current aging coefficient1≤ 2,2 < k of nonlinear factor aging coefficient2≤ 3 relative dielectric constants are old
Change 10 < k of coefficient3≤30；
Severe aging: Leakage Current aging coefficient k1> 2, nonlinear factor aging coefficient k2> 3 or relative dielectric constant aging system
Number k3> 30；
For any zinc oxide resistance sheet to be tested and assessed, in Leakage Current aging coefficient k1, nonlinear factor aging coefficient k2And phase
To dielectric constant aging coefficient k3In three parameters, taking grade corresponding to the parameter of three parameter middle grade most serious to be used as should
The grade of zinc oxide resistance sheet to be tested and assessed；The severity of grade is defined as: severe aging > mittlere alterung > slight aging；
Grade includes slight aging, mittlere alterung and severe aging；
2) the synthesis aging coefficient of zinc oxide resistance sheet to be tested and assessed is calculated using weighted sum algorithm.
10. the ageing properties of zinc oxide resistance sheet according to claim 9 test appraisal procedure, it is characterised in that described
The synthesis aging coefficient of zinc oxide resistance sheet to be tested and assessed is calculated using weighted sum algorithm, is specially calculated using following formula
Comprehensive aging coefficient K:
K=η1k1+η2k2+η3k3
K in formula1For Leakage Current aging coefficient, the k of zinc oxide resistance sheet to be tested and assessed2For zinc oxide resistance sheet to be tested and assessed
Nonlinear factor aging coefficient, k3For the relative dielectric constant aging coefficient of zinc oxide resistance sheet to be tested and assessed, η1、η2And η3For
Weighted value.
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| CN201910462988.6A CN110133460B (en) | 2019-05-30 | 2019-05-30 | Aging performance test evaluation method of zinc oxide resistance card |
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| CN201910462988.6A CN110133460B (en) | 2019-05-30 | 2019-05-30 | Aging performance test evaluation method of zinc oxide resistance card |
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| CN113960424A (en) * | 2021-10-19 | 2022-01-21 | 广东电网有限责任公司 | Continuous lightning deterioration evaluation method for valve plate of lightning arrester |
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| CN113960424A (en) * | 2021-10-19 | 2022-01-21 | 广东电网有限责任公司 | Continuous lightning deterioration evaluation method for valve plate of lightning arrester |
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