CN106772015A - A kind of low capacity contactor electric life test system and method - Google Patents
A kind of low capacity contactor electric life test system and method Download PDFInfo
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- CN106772015A CN106772015A CN201611251984.6A CN201611251984A CN106772015A CN 106772015 A CN106772015 A CN 106772015A CN 201611251984 A CN201611251984 A CN 201611251984A CN 106772015 A CN106772015 A CN 106772015A
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- 238000012360 testing method Methods 0.000 title claims abstract description 75
- 238000000034 method Methods 0.000 title abstract description 18
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- 238000001514 detection method Methods 0.000 claims description 11
- 239000000853 adhesive Substances 0.000 claims description 7
- 230000001070 adhesive effect Effects 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000010998 test method Methods 0.000 claims description 3
- 230000006698 induction Effects 0.000 claims description 2
- 238000002474 experimental method Methods 0.000 description 11
- 238000005516 engineering process Methods 0.000 description 4
- 230000033228 biological regulation Effects 0.000 description 2
- 238000003032 molecular docking Methods 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 241000271559 Dromaiidae Species 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
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- 238000007789 sealing Methods 0.000 description 1
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Classifications
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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
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
Abstract
A kind of low capacity contactor electric life test system, including control loop power supply, main circuit power, load, an industrial computer is connected with load, industrial computer connects a voltage-current sensor and drive circuit respectively again, drive circuit connects control loop power supply again, voltage-current sensor is connected with main circuit power again, and main circuit power and control loop power supply are each connected with industrial computer respectively again；Contactor is arranged on test item erecting bed, contactor is connected with voltage-current sensor, drive circuit, main circuit power, load respectively, the main integrated all power supply outputs of test item erecting bed and the input interface of load, while being internally integrated various respective sensors；Test system automatic capability is high, electric life is tested by the decision method of various redundancies is more accurately judged, improves the accuracy rate of test and the reliability of test result.
Description
Technical field
The invention belongs to contactor electric life test system technical field, it is related to a kind of low capacity contactor electric life to test
System and method.
Background technology
Contactor is a kind of very strong self-action device for switching of versatility, is one kind in Electric Traction and automatic control system
Important low-voltage electrical apparatus.It can be frequently switched on and disconnect AC and DC main circuit and Large Copacity control circuit.Contactor should
With widely, such as the application on high speed motor car.Statistics shows, in current EMUs failure cause, because of electrical equipment unit
Part is aging, work is unreliable and causes the system failure to occupy ratio very high.Contactor is using very wide on high speed motor car
One important additional device, therefore, in-depth study is carried out to its electric life, to the operation stability and safety of its high speed motor car
Property has very important significance.Contactor experiment is the important means for checking contactor quality, wherein, electrical endurance test is weight
One of pilot project wanted, the electric life index of contactor can be not only obtained by electric life, and contributes to analysis to contact
The reason for device fails, for improve product quality provides important evidence.Therefore, the pilot system of contactor electric life and test side
Method is always the key areas of domestic and international electrical equipment academia research.
In contactor life test technology related fields, traditional contactors electric life test system it is main by controlling switch,
Pulse signal generator, low capacity relay, counter, load etc. constitute, in this test system control switching electricity the time and
The action such as number of times is required for artificial operation, and test operation process is cumbersome.The regulation of load is also required to regulation, the work(of load manually
The test parameters such as rate factor, time constant cannot also be directly obtained.Contactor electric life tests traditional scheme also by monolithic
Machine integrated technology is controlled to carry out data acquisition with PLC technology, and this scheme is in terms of data acquisition using circulation surface sweeping side
Formula, when main circuit goes wrong and needs the program of scanning a lot, main circuit can not timely be protected.Using
PLC boards are gathered, and not enough fully, easily by external interference, it is impossible to adopt and pass, data volume is less for isolation, in mass data treatment
It is inapplicable with more complicated application treatment aspect.At testing scheme involved by the scheme of existing contactor electric life test
Reason job order one, arithmetic speed is slow, is all not carried out in detection a period of time, and major loop two is measured during adhesive and release
End and the voltage and current value at main noddle on contactor two ends, it is impossible to obtain corresponding steadying resistance value.It is right in existing method of testing
The decision method of electric life is also only a kind of, it is impossible to more accurately judge the failure feelings of contactor test product during electrical endurance test
Condition.
The content of the invention
It is an object of the invention to provide a kind of low capacity contactor electric life test system and method, the test system is automatic
Change degree is high, experiment process can be automatically performed by industrial computer, halfway without Human disturbance.Using various redundancies
Decision method, electric life is tested by voltage decision procedure and resistance and electric current decision procedure is more accurately sentenced
It is fixed, improve the accuracy rate of test and the reliability of test result.
For achieving the above object, the present invention provides a kind of low capacity contactor electric life test system, including control
Ring current, main circuit power, load, it is characterised in that：An industrial computer is connected with load, industrial computer connects a voltage respectively again
Current sensor and drive circuit, drive circuit connect control loop power supply, voltage-current sensor and and main circuit power again
It is connected, main circuit power and control loop power supply are each connected with industrial computer respectively again；Contactor is arranged on test item erecting bed
On, contactor is connected with voltage-current sensor, drive circuit, main circuit power, load respectively, and test item erecting bed mainly collects
The input interface for being exported into all power supplys and being loaded, while being internally integrated various respective sensors；Industrial computer is by bus to master
Ring current, control loop power supply and load send and set instruction, are automatically performed the bar of voltage, the setting of electric current and load impedance
Part, required to meet the test of contactor electric life, load refers to according to the control that the demand and industrial computer of specific test event send
Order carrys out the resistance and inductance value of adjust automatically major loop, obtains different bearing powers and power factor, time constant；Industrial computer
The command signal of transmission adhesive or release is supplied by drive circuit to drive circuit, control loop power supply to contactor coil
Electricity, the low and high level digital quantity that drive circuit exports industrial computer is converted into the switching value of coil, carrys out the adhesive of control contactor
And release；The voltage x current value that voltage-current sensor is gathered between main circuit power voltage and contactor main contacts passes to work
The test data of passback is analyzed and processed by control machine, industrial computer, and most result of the test shows and preserves at last.
Described load for manually with intelligent two ways, the aptitude manner of wherein AC load has two kinds, and one kind is straight
Connected setting voltage, electric current and power factor to select inductance and resistance value, second is by setting voltage, resistance and electricity
Feel calculating power factor；Manual mode is to need to calculate the current value of loading according to test, the electric current for loading as needed
Corresponding impedance and induction reactance value are calculated with power factor, corresponding resistance value is then selected.
Present invention also offers a kind of low capacity contactor electric life method of testing, it is characterised in that comprise the following steps：
All parameters required for the 1st, major loop and control loop test are set, starting load, main circuit power, control loop electricity
Source；
2nd, main circuit power and control loop power supply and corresponding contactless contactor, all touching of detection circuit docking tentaculum are closed
Head is detected that by the way of various judgement redundancies, main criterion is：（1）The contact drop of contact when contact
Whether the 5% of contact ring current voltage is exceeded；（2）Whether voltage during contact disjunction between contact is less than contact ring current electricity
The 90% of pressure；（3）Detect that the voltage and current at main contacts two ends calculates its contact resistance during contact, whether contact resistance is big
Transfinited setting in contact resistance；4）Whether the electric current at contact two ends is more than 0.5mA during contact disjunction.When the contact to contactor enters
When any of the above situation occurs during row detection is "Yes", that is, think that the contactor breaks down, repeat detection, when reaching
" the expected number of stoppages ", disconnects contactor, records current cycle time, and record data completes test, generation report.
The present invention has following main beneficial effect compared with prior art：
1. the test judgement method of the low capacity contactor electric life test system that the present invention is applied uses various judgement redundancies
Decision method.Test of the method that redundancy judges to electric life is accurate, improves the accuracy rate of test.
2. the low capacity contactor electric life test system that the present invention is applied, can be according to experiment by industrial computer control
Personnel's pre-sets automatic execution experiment process, halfway without Human disturbance.Industrial computer has good man machine operation interface,
The make-and-break time and break-make number of times of contacts of contactor can be automatically controlled, also can directly be sent out to power-supply system and load by industrial computer
Send setting to instruct, can automatically, accurately complete the electric life test of AC/DC contactor.
Brief description of the drawings
Fig. 1 is pilot system frame diagram of the present invention；
Fig. 2 is experimental test flow chart of the present invention.
Specific embodiment
Reference picture 1, the present invention includes control loop power supply, main circuit power, industrial computer, drive circuit, load, voltage electricity
Flow sensor.Contactor is arranged on test item erecting bed, and voltage sensor and current sensor in test system
Binding post is arranged on the backboard inside test item erecting bed, and experiment every time can need to be connected to holding wire according to pilot project
Specify binding post.The main integrated all power supply outputs of test item erecting bed and the input interface of load, while being internally integrated voltage
Sensor, current sensor, temperature sensor, humidity sensor etc. need for system testing.It is loaded with manual and intelligence two
The mode of kind, load is internal control circuit, and inside has contactor and communication device；Work control machine is sensed with voltage x current respectively
Device, drive circuit, main circuit power, control loop power supply, load are connected.Voltage-current sensor and contactor, major loop electricity
Source, industrial computer are connected.Drive circuit is connected with contactor, industrial computer and control circuit power.Contactor is sensed with voltage x current
Device, drive circuit, main circuit power, load are connected.Main circuit power is connected to form survey with the main contacts of contactor and load
The major loop of examination.Industrial computer is sent to main power source, control loop power supply and load by bus and sets instruction, is automatically performed electricity
The condition of pressure, the setting of electric current and load impedance, it is required to meet the test of contactor electric life, load according to specific test event
Demand and the control instruction that sends of industrial computer come the resistance and inductance value of adjust automatically major loop, obtain different bearing powers
With power factor, time constant.The command signal of adhesive or release is passed to drive circuit, control loop power supply by industrial computer
The instruction for obtaining industrial computer transmission is powered by drive circuit to contactor coil, the height electricity that drive circuit exports industrial computer
Flat digital quantity, is converted into the switching value of coil, that is, high level is open-minded, low level shut-off, come control contactor adhesive and
Release.Voltage-current sensor gathers the voltage x current value between main circuit power voltage and contactor main contacts and passes to work
Control machine, industrial control computer returns the test data of distal end, and benefit reason is analyzed on this basis, and most experiment is tied at last
Fruit shows and preserves.Experiment can be suspended in contactor electric life test process or experiment is exited, when the experiment for reaching setting is followed
Ring number of times meets " life expectancy device " or the number of stoppages meets " the expected number of stoppages ", and experiment stops, and industrial computer disconnects contact
Device simultaneously stops cumulative number, and the numerical value is electric life.If electric life test is time-consuming more long, it may appear that test has to half faces
The demand of Shi Jinhang other performance tests, can now suspend experiment, after waiting the interim performance test of completion, continue life test, survey
Examination data can continue.
The selection mode of load that the present invention is applied in low capacity contactor electric life test system has manually and intelligence
Can two ways, can according to the demand of specific test event to control instruction that industrial computer sends come the electricity of adjust automatically major loop
Resistance and inductance value, obtain different bearing powers and power factor, time constant.Compared to the load linearity degree that traditional test is used
Good, time control high precision substantially increases operating efficiency, can save the operating time and can meet cycle count requirement.
Wherein intelligent load is operated by PC softwares, the resistance of impedance, and inductance is automatically switched using contactor etc., between resistance
Replace air switch with contactor.Intelligence has two ways, and for AC load, the first is directly to set voltage x current and work(
Rate factor is tested, it is not necessary to calculated.Second is to set voltage resistance and inductance, seeks power factor.Wherein second side
Formula is directed to that circuit is long, in system resistance it is more can cause to be applied when measurement result deviation is big, it is necessary to calculate power because
Number, the system of choosing can automatically distribute electric current and be loaded, and the parameter for loading calculates very accurate and efficient and convenient.
The operation of main circuit power is man-machine interface in the low capacity contactor electric life test system that the present invention is applied,
Display is comprehensive, simple to operate, is interacted using touch screen, with good man-machine interface, can intuitively monitoring device fortune
Market condition and fault alarm situation, can check the parameters of power supply, failure logging etc., support remote monitoring.
Reference picture 2, carries out contactor life test under industrial computer control, and its test run process is as follows：
1. main circuit voltage, current-order are set, i.e. " voltage of major loop, electric current are set "；
2. voltage, the electric current of control coil power supply are set, i.e. " control loop voltage, electric current are set "；
3. configuration load parameter, main test parameters includes：Coil control voltage, contact power supply overcurrent protection value, loop electricity
Pressure, loop current, the series of contact, pickup time, release time, life expectancy setting, expected failure setting, contact resistance surpass
Limit is set；
4. starting load, starts main circuit power, starts control loop power supply；
5. closure main circuit power and the corresponding contactless contactor of control loop power supply, i.e. input power _ enable DO are electric with control
Source _ enable DO；
6. sealing voltage sensing switch DO, i.e. voltage detecting _ enable DO；
7. the switch S1, i.e. AC/DC contactor _ control DO of control contactor coil are closed；
8. time delay, length is " pickup time setting "；
9. all contacts of detection circuit docking tentaculum are detected that this test system can at most be detected to 9 groups of contacts；
10. in 40% time of the " on " phase circulated every time in contactor, 9 groups of contact voltages of contact when detection contact is contacted
Drop；
11., if the contact drop of contact exceedes the 5% of contact ring current voltage during contact, the number of stoppages adds 1,
Perform step 20；
The voltage and current at 12. detection 9 groups of contacts two ends, calculates 9 contact resistances；
More than " contact resistance transfinite settings ", then the number of stoppages adds 1 to 13. contact resistances, execution step 20；
14. disconnect contactor _ control DO；
15. time delays, length is " release time setting "；
In 40% time of 16. " disjunction " phases circulated every time in contactor, voltage during detection contact disjunction between 9 groups of contacts；
If less than the 90% of contact ring current voltage, the number of stoppages adds 1 to voltage during 17. contact disjunction between contact,
Perform step 20；
The electric current at 18. detection 9 groups of contacts two ends；
If 19. electric currents are more than 0.5mA, the number of stoppages adds 1；
20. repeat step 7-19, until cycle-index meets " life expectancy setting " or number of stoppages satisfaction " expected failure time
Number "；
21. off voltages detect _ enable DO；
22. record current cycle times.Record data；
Complete test, generation report.
Claims (3)
1. a kind of low capacity contactor electric life test system, including control loop power supply, main circuit power, load, its feature
It is：An industrial computer is connected with load, industrial computer connects a voltage-current sensor and drive circuit respectively again, and drive circuit is again
Connection control loop power supply, voltage-current sensor is connected with main circuit power again, and main circuit power and control loop power supply are again
Difference is each connected with industrial computer；Contactor be arranged on test item erecting bed on, contactor respectively with voltage-current sensor, drive
Dynamic circuit, main circuit power, load are connected, the input interface of the main integrated all power supply outputs of test item erecting bed and load,
It is internally integrated various respective sensors simultaneously；Industrial computer is sent by bus to main circuit power, control loop power supply and load
Instruction is set, the condition of voltage, the setting of electric current and load impedance is automatically performed, it is required to meet the test of contactor electric life,
The control instruction according to the transmission of the demand and industrial computer of specific test event is loaded come the resistance and inductance of adjust automatically major loop
Value, obtains different bearing powers and power factor, time constant；Industrial computer transmits the command signal of adhesive or release to drive
Dynamic circuit, control loop power supply is powered by drive circuit to contactor coil, the height electricity that drive circuit exports industrial computer
Flat digital quantity is converted into the switching value of coil, comes the adhesive and release of control contactor；Voltage-current sensor gathers major loop
Voltage x current value between supply voltage and contactor main contacts passes to industrial computer, and industrial computer carries out the test data of passback
Analysis and treatment, most result of the test shows and preserves at last.
2. a kind of low capacity contactor electric life test system according to claim 1, it is characterised in that：Described load
For manual with intelligent two ways, the aptitude manner of wherein AC load has two kinds, and one kind is directly by setting voltage, electric current
Inductance and resistance value are selected with power factor, second is to calculate power factor by setting voltage, resistance and inductance；Hand
Flowing mode is to need to calculate the current value of loading according to test, and the electric current and power factor for loading as needed are calculated accordingly
Impedance and induction reactance value, then select corresponding resistance value.
3. a kind of low capacity contactor electric life method of testing according to claim 1, it is characterised in that including following step
Suddenly：
（1）Major loop is set with all parameters required for control loop test, starting load, main circuit power, control loop
Power supply；
（2）Closure main circuit power and control loop power supply and corresponding contactless contactor, detection circuit dock all of tentaculum
Contact is detected that by the way of various judgement redundancies, main criterion is：（1）The contact voltage of contact when contact
Whether drop exceedes the 5% of contact ring current voltage；（2）Whether voltage during contact disjunction between contact is less than contact ring current
The 90% of voltage；（3）Detect that the voltage and current at main contacts two ends calculates its contact resistance during contact, whether is contact resistance
Transfinited setting more than contact resistance；4）Whether the electric current at contact two ends is more than 0.5mA during contact disjunction；When the contact to contactor
When any of the above situation occurs when being detected is "Yes", that is, think that the contactor breaks down, repeat detection, when reaching
" the expected number of stoppages ", disconnects contactor, records current cycle time, and record data completes test, generation report.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611251984.6A CN106772015A (en) | 2016-12-30 | 2016-12-30 | A kind of low capacity contactor electric life test system and method |
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| CN201611251984.6A CN106772015A (en) | 2016-12-30 | 2016-12-30 | A kind of low capacity contactor electric life test system and method |
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ID=58928483
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107685032A (en) * | 2017-08-14 | 2018-02-13 | 苏州新视野自动化科技有限公司 | High-voltage DC contactor all-round property testing streamline |
| CN108362955A (en) * | 2017-11-30 | 2018-08-03 | 中国航空综合技术研究所 | A method of dynamic contact element is tested under vibration, load-up condition |
| CN109828198A (en) * | 2019-01-15 | 2019-05-31 | 哈尔滨工业大学 | A kind of A.C. contactor life prediction module |
| CN110031756A (en) * | 2019-05-30 | 2019-07-19 | 西北工业大学青岛研究院 | A kind of method of D.C. contactor performance test conversion circuit and life test |
| CN110045272A (en) * | 2018-12-21 | 2019-07-23 | 核动力运行研究所 | Relay test platform composite control apparatus |
| CN110678763A (en) * | 2017-09-29 | 2020-01-10 | 株式会社Lg化学 | Contactor failure rate prediction system and method |
| CN112067989A (en) * | 2020-09-29 | 2020-12-11 | 国网北京市电力公司 | High-speed train electromagnetic contactor test system |
| CN112731133A (en) * | 2020-12-25 | 2021-04-30 | 格力电器（武汉）有限公司 | Method and device for detecting electrical service life of alternating current contactor |
| CN112964926A (en) * | 2021-02-04 | 2021-06-15 | 国网浙江省电力有限公司电力科学研究院 | Method for managing service life of large-current power device test fixture |
| CN113687145A (en) * | 2020-05-18 | 2021-11-23 | 贵州振华群英电器有限公司（国营第八九一厂） | Voltage drop testing device of alternating current contactor |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107685032A (en) * | 2017-08-14 | 2018-02-13 | 苏州新视野自动化科技有限公司 | High-voltage DC contactor all-round property testing streamline |
| US11307254B2 (en) | 2017-09-29 | 2022-04-19 | Lg Energy Solution, Ltd. | Contactor failure rate prediction system and method |
| CN110678763B (en) * | 2017-09-29 | 2022-03-18 | 株式会社Lg化学 | Contactor failure rate prediction system and method |
| CN110678763A (en) * | 2017-09-29 | 2020-01-10 | 株式会社Lg化学 | Contactor failure rate prediction system and method |
| CN108362955A (en) * | 2017-11-30 | 2018-08-03 | 中国航空综合技术研究所 | A method of dynamic contact element is tested under vibration, load-up condition |
| CN108362955B (en) * | 2017-11-30 | 2020-04-07 | 中国航空综合技术研究所 | Method for testing movable contact element under vibration and load conditions |
| CN110045272A (en) * | 2018-12-21 | 2019-07-23 | 核动力运行研究所 | Relay test platform composite control apparatus |
| CN109828198B (en) * | 2019-01-15 | 2021-04-20 | 哈尔滨工业大学 | Service life prediction module of alternating current contactor |
| CN109828198A (en) * | 2019-01-15 | 2019-05-31 | 哈尔滨工业大学 | A kind of A.C. contactor life prediction module |
| CN110031756B (en) * | 2019-05-30 | 2021-05-18 | 西北工业大学青岛研究院 | DC contactor performance test conversion circuit and service life test method |
| CN110031756A (en) * | 2019-05-30 | 2019-07-19 | 西北工业大学青岛研究院 | A kind of method of D.C. contactor performance test conversion circuit and life test |
| CN113687145A (en) * | 2020-05-18 | 2021-11-23 | 贵州振华群英电器有限公司（国营第八九一厂） | Voltage drop testing device of alternating current contactor |
| CN112067989A (en) * | 2020-09-29 | 2020-12-11 | 国网北京市电力公司 | High-speed train electromagnetic contactor test system |
| CN112731133A (en) * | 2020-12-25 | 2021-04-30 | 格力电器（武汉）有限公司 | Method and device for detecting electrical service life of alternating current contactor |
| CN112964926A (en) * | 2021-02-04 | 2021-06-15 | 国网浙江省电力有限公司电力科学研究院 | Method for managing service life of large-current power device test fixture |
| CN112964926B (en) * | 2021-02-04 | 2022-05-13 | 国网浙江省电力有限公司电力科学研究院 | Method for managing service life of large-current power device test fixture |
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Application publication date: 20170531 |
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