CN109100676A - A kind of humidity stepping strenuous test method and system of intelligent electric energy meter - Google Patents
A kind of humidity stepping strenuous test method and system of intelligent electric energy meter Download PDFInfo
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- CN109100676A CN109100676A CN201811012368.4A CN201811012368A CN109100676A CN 109100676 A CN109100676 A CN 109100676A CN 201811012368 A CN201811012368 A CN 201811012368A CN 109100676 A CN109100676 A CN 109100676A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/04—Testing or calibrating of apparatus covered by the other groups of this subclass of instruments for measuring time integral of power or current
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- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The present invention provides a kind of humidity stepping strenuous test method and system of intelligent electric energy meter, belongs to reliability test technical field.The method of the present invention comprises determining that the humidity range for carrying out strenuous test to intelligent electric energy meter to be measured；1.1 carry out intelligent electric energy meter to be measured in chamber to test preceding pretest, determine the initial value of each parameter in multiple parameters；It determines that intelligent electric energy meter to be measured is completely drenched in 1.2 predetermined times, carries out strenuous test in 1.5 hours to intelligent electric energy meter to be measured according to pilot project, obtain the current value of each parameter；1.3 judge whether the difference of the current value of arbitrary parameter and initial value meets cut-off criterion, and when being unsatisfactory for cut-off criterion, RH=RH+5% when RH=RH+10% or RH > 85%, carries out step 1.1 when RH < 85%.The present invention obtains the test item of the intelligent electric energy meter under different step size combinations as a result, more accurately determining that the maximal work of intelligent electric energy meter temperature and humidity is horizontal.
Description
Technical field
The present invention relates to reliability test technical fields, and relate more specifically to a kind of humidity stepping of intelligent electric energy meter
Strenuous test method and system.
Background technique
In recent years, with the accelerated development of smart grid, the demand of intelligent electric energy meter is also increasingly increased, as intelligence
The basis of power grid, the long-term running reliability of intelligent electric energy meter are paid close attention to by people.At the same time, with manufacturing quality and technique
The reliability for developing intelligent electric energy meter it is higher and higher, traditional internal field test is no longer satisfied the requirement of user.
In order to study highly reliable intelligent electric energy meter life problems, the method for proposing accelerated test assesses its service life.It is logical
It crosses studies have shown that the main stress for influencing intelligent electric energy meter normal operation is temperature and humidity.
Summary of the invention
It is an object of the invention to determine that intelligent electric energy meter is mentioned in high temperature and high humility maximal work level and fault mode
A kind of humidity stepping strenuous test method of intelligent electric energy meter is gone out, the method for the present invention includes:
Determine the humidity range 50%~95% for carrying out strenuous test to intelligent electric energy meter to be measured；
1.1 carry out intelligent electric energy meter to be measured according to pilot project under natural environmental condition in chamber to test preceding prediction
Examination, loading current Imax obtain multiple parameters associated with intelligent electric energy meter to be measured, determine each parameter in multiple parameters
Initial value；
1.2 determine whether the performance of intelligent electric energy meter and function are normal according to the multiple parameters of pretest, intelligent when determining
When the performance and normal function of electric energy meter, the temperature and humidity of lifting test case is wet to strenuous test temperature range and strenuous test
Spend in range, determine that intelligent electric energy meter to be measured is completely drenched in the predetermined time, according to pilot project to intelligent electric energy meter to be measured into
Row strenuous test in 1.5 hours, obtains the current value of each parameter；
1.3 judge whether the difference of the current value of arbitrary parameter and initial value meets cut-off criterion, sentence if meeting cut-off
According to, it is determined that the intelligent electric energy meter to be measured is abnormal, otherwise determines whether humidity RH is equal to 95%, if it is, terminates, no
Then, otherwise, RH=RH+5% when RH=RH+10% or RH > 85% when RH < 85% carries out step 1.1.
Optional intelligent electric energy meter includes: single-phase intelligent electric energy meter and three-phase intelligent electric-energy meter.
Optionally, the predetermined time is 0~1.5 hour.
Optionally, pilot project includes: accuracy requirement test, electric requirement test, insulation, EMC test, machine
Tool test, function, temperature, communication function and relay function.
Optionally, parameter includes: elementary error, error variance, lifting error, error of time of day, liquid crystal display, communication function
Energy and cell voltage.
The present invention also provides a kind of humidity stepping strenuous test system of intelligent electric energy meter, present system includes:
Humidity range determining module, the determining humidity range 50% for carrying out strenuous test to intelligent electric energy meter to be measured~
95%；
Tentative module, 1.1 carry out intelligent electric energy meter to be measured according to pilot project under natural environmental condition in chamber
Pretest before testing, loading current Imax obtain multiple parameters associated with intelligent electric energy meter to be measured, determine in multiple parameters
Each parameter initial value；
1.2 determine whether the performance of intelligent electric energy meter and function are normal according to pretest multiple parameters, intelligent electric when determining
Can table performance and normal function when, the temperature and humidity of lifting test case to strenuous test temperature range and strenuous test humidity
It determines that intelligent electric energy meter to be measured is completely drenched in range, in the predetermined time, intelligent electric energy meter to be measured is carried out according to pilot project
1.5 the strenuous test of hour obtains the current value of each parameter；
1.3 judge whether the difference of the current value of arbitrary parameter and initial value meets cut-off criterion, sentence if meeting cut-off
According to, it is determined that the intelligent electric energy meter to be measured is abnormal, otherwise determines whether humidity RH is equal to 95%, if it is, terminates, no
Then, otherwise, RH=RH+5% when RH=RH+10% or RH > 85% when RH < 85% carries out step 1.1.
Optionally, intelligent electric energy meter includes: single-phase intelligent electric energy meter and three-phase intelligent electric-energy meter.
Optionally, the predetermined time is 0~1.5 hour.
Optionally, pilot project includes: accuracy requirement test, electric requirement test, insulation, EMC test, machine
Tool test, function, temperature, communication function and relay function.
Optionally, parameter includes: elementary error, error variance, lifting error, error of time of day, liquid crystal display, communication function
Energy and cell voltage.
The present invention has the advantages that
The present invention is mainly influenced by temperature and humidity according to intelligent electric energy meter normal operation, determines high temperature and humidity
Trial stretch ensure that the reasonability of test；
The present invention carries out pretest before strenuous test, can find early intelligent electric energy meter to be measured there are the problem of, from
And reduce testing cost；
The present invention sets different temperatures and humidity step-length according to the difference of deterioration velocity, obtains the intelligence under different step size combinations
The test item of energy electric energy meter is as a result, to more accurately determine the maximal work of each sensitive stress type of intelligent electric energy meter
Stress level.
The present invention is according to test item in different temperature and humidities as a result, determining the corresponding failure of intelligent electric energy meter
Mode.
Detailed description of the invention
Fig. 1 is a kind of humidity stepping strenuous test method flow diagram of intelligent electric energy meter of the present invention；
Fig. 2 is a kind of humidity stepping strenuous test system construction drawing of intelligent electric energy meter of the present invention.
Specific embodiment
Exemplary embodiments of the present invention are introduced referring now to the drawings, however, the present invention can use many different shapes
Formula is implemented, and is not limited to the embodiment described herein, and to provide these embodiments be at large and fully disclose
The present invention, and the scope of the present invention is sufficiently conveyed to person of ordinary skill in the field.Show for what is be illustrated in the accompanying drawings
Term in example property embodiment is not limitation of the invention.In the accompanying drawings, identical cells/elements use identical attached
Icon note.
Unless otherwise indicated, term (including scientific and technical terminology) used herein has person of ordinary skill in the field
It is common to understand meaning.Further it will be understood that with the term that usually used dictionary limits, should be understood as and its
The context of related fields has consistent meaning, and is not construed as Utopian or too formal meaning.
The present invention provides a kind of humidity stepping strenuous test method of intelligent electric energy meter, as shown in Figure 1, detailed process packet
It includes:
Determine the humidity range 50%~95% for carrying out strenuous test to intelligent electric energy meter to be measured, wherein intelligence electricity
Energy table includes: single-phase intelligent electric energy meter and three-phase intelligent electric-energy meter；
1.1 carry out intelligent electric energy meter to be measured according to pilot project under natural environmental condition in chamber to test preceding prediction
Examination, loading current Imax obtain multiple parameters associated with intelligent electric energy meter to be measured, determine each parameter in multiple parameters
Initial value；
1.2 determine whether the performance of intelligent electric energy meter and function are normal according to pretest multiple parameters, intelligent electric when determining
Can table performance and normal function when, the temperature and humidity of lifting test case to strenuous test temperature range and strenuous test humidity
Determine that intelligent electric energy meter to be measured is completely drenched in range, in 0~1.5 hour predetermined time, according to pilot project to intelligence to be measured
Electric energy meter carries out strenuous test in 1.5 hours, obtains the current value of each parameter, wherein parameter includes: elementary error, error
It is deteriorated, goes up and down error, error of time of day, liquid crystal display, communication function and cell voltage；
Wherein, pilot project includes: accuracy requirement test, electric requirement test, insulation, EMC test, machinery
Test, function, temperature, communication function and relay function；
Pilot project is referring specifically to Tables 1 and 2；
1 single-phase intelligent electric energy meter test item of table
2 three-phase intelligent electric-energy meter test item of table
1.3 judge whether the difference of the current value of arbitrary parameter and initial value meets cut-off criterion, sentence if meeting cut-off
According to, it is determined that the intelligent electric energy meter to be measured is abnormal, otherwise determines whether humidity RH is equal to 95%, if it is, terminates, no
Then, RH=RH+5% when RH=RH+10% or RH > 85% when RH < 85% carries out step 1.1；
Wherein, the acquisition of parameter and cut-off criterion to meet condition as follows:
The acquisition of elementary error and the condition for ending criterion, the elementary error of intelligent electric energy meter is expressed as, in electric energy meter
The metrical pulse of some lower reference table of load point subtracts the metrical pulse of tested table, then compared with the metrical pulse of reference table.Such as
Following formula:
Elementary error test load point is respectively as follows: 1.0Imax, 0.5L Imax, 0.8C Imax, 1.00.5Imax, 0.5L
0.5Imax、0.8C 0.5Imax、1.0Ib、0.5L Ib、0.8C Ib、1.0 0.5Ib、0.5L 0.5Ib、0.8C 0.5Ib、
0.5L 0.2Ib、0.8C 0.2Ib、1.0 0.1Ib、0.5L 0.1Ib、0.8C0.1Ib、1.0 0.05Ib。
Failure criteria ends criterion referring to " JJG 596-2012 electronic type AC energy meter vertification regulation ":
The 3 percent error limit of table (0.2S grades and 0.5S grades of instrument)
The 4 percent error limit of table (1 grade and 2 grades of instrument)
The acquisition of error variance and cut-off criterion, intelligent electric energy meter load 30min in reference voltage, reference current
Afterwards, to same by test agent, at reference voltage, Ib, power factor 1 and 0.5L, sample is done and is tested for the first time；In test bar
After being spaced 5min in the case that part is constant, second of test is done to sample, the difference of the test result twice at same test point
Absolute value is not to be exceeded 0.2%.
The acquisition of difference between rising and falling and the condition for ending criterion, Basic Error of Energy Meter according to load current from small to large, so
Sequence from big to small is tested twice afterwards, record load point tolerance；Power factor 1.0, load current 0.01Ib~
In Imax variation range, the absolute value of the same error change by test agent at identical load point is not to be exceeded 0.25%.
In slope change procedure, 3 representative points recording errors are chosen, calculate variation value, test point load current are as follows:
0.05Ib、Ib、Imax。
The acquisition of error of time of day and the condition for ending criterion, the accuracy of clock crystal oscillator and stability are when influencing real-time
One of the principal element of time accuracy of clock chip；The temperature drift of same crystal oscillator is cause its deviations in accuracy main
Reason.Therefore error of time of day depends primarily on the accuracy and stability of crystal oscillator.Intelligent electric energy meter, which uses, has temperature
The hardware clock circuit of compensation function is spent, terminal output frequency is 1Hz.Under reference temperature (23 DEG C), clock accuracy
≤±0.5s/d；Then once standard increases 0.1s/d to the every raising of temperature, but no more than 1.0s/d within the scope of 60 DEG C.
The acquisition of communication function parameter and the condition for ending criterion, intelligent electric energy meter communication function include infrared communication, carry
Wave communication and RS-485 communication.485 communication failures can carry out Address Confirmation to electric energy meter by test stage body, i.e., logical by 485
News carry out the address information of reading power meters to judge whether the communication of electric energy meter 485 is normal.
The acquisition of liquid crystal display parameter and the condition for ending criterion, chamber directly acquire the liquid crystal display of intelligent electric energy meter
Parameter, directly judges whether normally, is likely to occur liquid crystal at high temperature without aobvious according to the result liquid crystal display of strenuous test
Show and meets test cut-off criterion.
The acquisition of cell voltage parameter and the condition for ending criterion, cell voltage are directly read according to chamber, battery electricity
Failure criteria is pressed, according to State Grid Corporation of China's company standard " Q/GDW 11179.7-2014 ", the work of single phase clock cell load
Voltage < 3.20V；Three-phase meter reading battery < 5.40V.
The present invention also provides a kind of humidity stepping strenuous test systems of intelligent electric energy meter, as shown in Fig. 2, system 200 is wrapped
It includes:
Humidity range determining module 201 determines the humidity range for carrying out strenuous test to intelligent electric energy meter to be measured
50%~95%, wherein intelligent electric energy meter includes: single-phase intelligent electric energy meter and three-phase intelligent electric-energy meter；
Tentative module 202,1.1 in chamber under natural environmental condition according to pilot project to intelligent electric energy meter to be measured into
Pretest before row is tested, loading current Imax obtain multiple parameters associated with intelligent electric energy meter to be measured, wherein parameter packet
Include: elementary error, error variance, lifting error, error of time of day, liquid crystal display, communication function and cell voltage determine multiple
The initial value of each parameter in parameter, wherein pilot project include: accuracy requirement test, electric requirement test, insulation,
EMC test, mechanical test, function, temperature, communication function and relay function；
1.2 determine whether the performance of intelligent electric energy meter and function are normal according to the multiple parameters of pretest, intelligent when determining
When the performance and normal function of electric energy meter, the temperature and humidity of lifting test case is wet to strenuous test temperature range and strenuous test
It spends in range, determines that intelligent electric energy meter to be measured is completely drenched in 0~1.5 hour predetermined time, according to pilot project to intelligence to be measured
Energy electric energy meter carries out strenuous test in 1.5 hours, obtains the current value of each parameter；
1.3 judge whether the difference of the current value of arbitrary parameter and initial value meets cut-off criterion, sentence if meeting cut-off
According to, it is determined that the intelligent electric energy meter to be measured is abnormal, otherwise determines whether humidity RH is equal to 95%, if it is, terminates, no
Then, RH=RH+5% when RH=RH+10% or RH > 85% when RH < 85% carries out step 1.1.
The present invention is mainly influenced by temperature and humidity according to intelligent electric energy meter normal operation, determines high temperature and humidity
Trial stretch ensure that the reasonability of test；
The present invention carries out pretest before strenuous test, can find early intelligent electric energy meter to be measured there are the problem of, from
And reduce testing cost；
The present invention sets different temperatures and humidity step-length according to the difference of deterioration velocity, obtains the intelligence under different step size combinations
The test item of energy electric energy meter is as a result, to more accurately determine the maximal work of each sensitive stress type of intelligent electric energy meter
Stress level.
The present invention is according to test item in different temperature and humidities as a result, determining the corresponding failure of intelligent electric energy meter
Mode.
Claims (10)
1. a kind of humidity stepping strenuous test method of intelligent electric energy meter, which comprises
Determine the humidity range 50%~95% for carrying out strenuous test to intelligent electric energy meter to be measured；
1.1 carry out intelligent electric energy meter to be measured according to pilot project under natural environmental condition in chamber to test preceding pretest,
Loading current Imax obtains multiple parameters associated with intelligent electric energy meter to be measured, determines each parameter in multiple parameters
Initial value；
1.2 determine whether the performance of intelligent electric energy meter and function are normal according to the multiple parameters of pretest, when determining intelligent electric energy
When the performance and normal function of table, the temperature and humidity of lifting test case to strenuous test temperature range and strenuous test humidity model
It determines that intelligent electric energy meter to be measured is completely drenched in enclosing, in the predetermined time, 1.5 is carried out to intelligent electric energy meter to be measured according to pilot project
The strenuous test of hour, obtains the current value of each parameter；
1.3 judge whether the difference of the current value of arbitrary parameter and initial value meets cut-off criterion, if meeting cut-off criterion,
It determines that the intelligent electric energy meter to be measured is abnormal, otherwise determines whether humidity RH is equal to 95%, if it is, terminate, otherwise, RH <
RH=RH+5% when RH=RH+10% or RH > 85% when 85% carries out step 1.1.
2. according to the method described in claim 1, the intelligent electric energy meter includes: single-phase intelligent electric energy meter and three-phase intelligent electricity
It can table.
3. according to the method described in claim 1, the predetermined time is 0~1.5 hour.
4. accuracy requirement is tested, electric requirement is tested according to the method described in claim 1, the pilot project includes:,
Insulation, EMC test, mechanical test, function, temperature, communication function and relay function.
5. according to the method described in claim 1, the parameter includes: elementary error, error variance, lifting error, day meter
When error, liquid crystal display, communication function and cell voltage.
6. a kind of humidity stepping strenuous test system of intelligent electric energy meter, the system comprises:
Humidity range determining module, the determining humidity range 50% for carrying out strenuous test to intelligent electric energy meter to be measured~
95%；
Tentative module, 1.1 test intelligent electric energy meter to be measured according to pilot project under natural environmental condition in chamber
Preceding pretest, loading current Imax obtain multiple parameters associated with intelligent electric energy meter to be measured, determine every in multiple parameters
The initial value of a parameter；
1.2 determine whether the performance of intelligent electric energy meter and function are normal according to the multiple parameters of pretest, when determining intelligent electric energy
When the performance and normal function of table, the temperature and humidity of lifting test case to strenuous test temperature range and strenuous test humidity model
It determines that intelligent electric energy meter to be measured is completely drenched in enclosing, in the predetermined time, 1.5 is carried out to intelligent electric energy meter to be measured according to pilot project
The strenuous test of hour, obtains the current value of each parameter；
1.3 judge whether the difference of the current value of arbitrary parameter and initial value meets cut-off criterion, if meeting cut-off criterion,
It determines that the intelligent electric energy meter to be measured is abnormal, otherwise determines whether humidity RH is equal to 95%, if it is, terminate, it is otherwise, no
Then, RH=RH+5% when RH=RH+10% or RH > 85% when RH < 85% carries out step 1.1.
7. system according to claim 6, the intelligent electric energy meter includes: single-phase intelligent electric energy meter and three-phase intelligent electricity
It can table.
8. system according to claim 6, the predetermined time is 0~1.5 hour.
9. system according to claim 6, the pilot project include: accuracy requirement test, electric requirement test,
Insulation, EMC test, mechanical test, function, temperature, communication function and relay function.
10. system according to claim 6, the parameter includes: elementary error, error variance, lifting error, day meter
When error, liquid crystal display, communication function and cell voltage.
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Application publication date: 20181228 |