CN111796182A - AC contactor electric service life test method and device based on large-capacity electronic accompanying test article - Google Patents
AC contactor electric service life test method and device based on large-capacity electronic accompanying test article Download PDFInfo
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- CN111796182A CN111796182A CN202010767405.3A CN202010767405A CN111796182A CN 111796182 A CN111796182 A CN 111796182A CN 202010767405 A CN202010767405 A CN 202010767405A CN 111796182 A CN111796182 A CN 111796182A
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Abstract
The invention relates to an alternating current contactor electric service life test method and a device thereof based on a large-capacity electronic accompanying test article. The industrial control computer drives the test articles in the test article group of the first loop contactor and the test article group of the second loop contactor through the digital signal output circuit, and the test articles are switched on or switched off according to a test action mode required by AC3 or AC 4. By adding one set of load and one control loop, simultaneous tests of different types of test products with different current specifications are realized, the test efficiency is improved, and the test cost is reduced.
Description
Technical Field
The invention relates to an alternating current contactor electric service life test method and device based on a large-capacity electronic accompanying test article.
Background
The sampling schemes of double three tests and single eight tests of the contactor electric service life test need to be respectively input into 3 and 8 test articles once, and the power supply capacity is required to be large. However, in the case of a large number of types of ac contactor products and different types of test products and test currents, if it is desired to reduce the test time, a plurality of test devices need to be provided, which results in high test cost. The existing 'ac contactor life test device and control method' with patent number 201110152601.0 adopts alternate cycle test technology to test a plurality of test articles in turn in a single cycle test, thereby ensuring that only one test article is subjected to on-off current operation test at a certain time, and in a whole test flow, the single cycle test is taken as a unit to complete a specified number of action cycle tests without prolonging the test time. The drawbacks of this alternative control technique are: when the alternating cycle test is carried out on a test article, the electric service life test can be carried out only on the alternating current contactor with one test current specification, and the test efficiency is low.
Disclosure of Invention
In view of the above, the present invention aims to provide a method and an apparatus for testing the electrical life of an ac contactor based on a large-capacity electronic accompanying test article, which can realize a time-sharing test of test articles with different current specifications in a test period by adding a set of adjustable impedance load and a control loop under the condition that the original power capacity and equipment are not changed and adopting a multitask control technology
In order to achieve the purpose, the invention adopts the alternating current contactor electric service life testing device based on the large-capacity electronic accompanying test article, which comprises a first circuit breaker, a second circuit breaker, an 1/6Ue transformer, a first electronic accompanying test article, a second electronic accompanying test article, a loop contactor test article group, a two-loop contactor test article group, a loop adjustable impedance load and a two-loop adjustable impedance load, wherein three-phase alternating current is divided into two branches after passing through the first circuit breaker, one branch is connected to the input end of the first electronic accompanying test article through a fuse combination, the other branch is connected to the input end of the second electronic accompanying test article after being stepped down through the second circuit breaker and a 1/6Ue transformer, the output end of the first electronic accompanying test article is connected to the loop contactor test article group after being connected in parallel with the output end of the second electronic accompanying test article, the rear end of the loop contactor test article group is connected with the loop adjustable impedance load circuit, the parallel connection line ends of the output end of the first electronic accompanying test article and the output end of the second electronic accompanying test article are also connected to the two-loop adjustable impedance load circuit through the two-loop contactor test article group.
Particularly, the AC contactor electric service life test device based on the large-capacity electronic accompanying test article also comprises
The high-speed data acquisition card is used for detecting coil voltage, coil current, test voltage and test current;
the digital signal input circuit is used for detecting the switch states of the auxiliary contacts of the test articles in the first loop contactor test article group and the second loop contactor test article group;
the digital signal output circuit controls the solid state relay group to respectively drive the first electronic accompanying test article, the second electronic accompanying test article, the first loop contactor test article group and the second loop contactor test article group to be switched on or switched off through the output interlocking circuit and the output isolation circuit;
a loop large current detection mutual inductor, a loop small current detection mutual inductor, a secondary loop large current detection mutual inductor and a secondary loop small current detection mutual inductor with more than one transformation ratio;
and an industrial control computer for driving the test articles in the first loop contactor test article group and the second loop contactor test article group through the digital signal output circuit, the switch-on and switch-off are carried out according to the test action mode required by AC3 or AC4, the industrial control computer receives the signal input from the high-speed data acquisition card and the digital signal input circuit, outputs the control signal to the digital signal output circuit, and the transformation ratio switching module of a loop large current detection mutual inductor, the transformation ratio switching module of a loop small current detection mutual inductor, the transformation ratio switching module of a two-loop large current detection mutual inductor and the transformation ratio switching module of a two-loop small current detection mutual inductor are driven by a silicon controlled control circuit to respectively realize transformation ratio switching on the loop large current detection mutual inductor, the loop small current detection mutual inductor, the two-loop large current detection mutual inductor and the two-loop small current detection mutual inductor.
Particularly, a loop large current detection mutual inductor is arranged in a connecting line of a first electronic accompanying test article and a loop contactor test article group in a penetrating manner, a loop small current detection mutual inductor is arranged in a connecting line of a second electronic accompanying test article and a loop contactor test article group in a penetrating manner, a two-loop large current detection mutual inductor is arranged in a connecting line of a first electronic accompanying test article and a two-loop contactor test article group in a penetrating manner, and a two-loop small current detection mutual inductor is arranged in a connecting line of a second electronic accompanying test article and a two-loop contactor test article group in a penetrating manner.
The invention also provides an alternating current contactor electric service life test method based on the large-capacity electronic accompanying test article,
the first step is as follows: newly building a test file;
the second step is that: setting test parameters, storing the test parameters into a test file, wherein the test parameters comprise
Test sample information is input into the test file according to the test sample information, the test sample information comprises the model, the rated current and the rated voltage of the test sample in the first loop contactor test sample group and the second loop contactor test sample group,
test control parameters, which are used for controlling the actions of the test articles in the test article group of the first loop contactor and the test article group of the second loop contactor according to the test control parameters, wherein the test control parameters comprise the number of the test articles, the test switch-on current, the breaking current, the pull-in time, the release time, the operating frequency, the power factor and the test cycle number,
test detection parameters including coil voltage, coil current, test voltage, test current, and auxiliary contact switch state,
fault judgment parameters comprise a coil pull-in time overrun threshold, a coil release time overrun threshold, a main contact pressure drop upper limit threshold and a main contact pressure drop lower limit threshold, and fault analysis and judgment are carried out according to the fault judgment parameters;
the third step: adjusting control power supplies of the test products in the test product group of the primary loop contactor and the test product group of the secondary loop contactor, and adjustable load impedance of the primary loop and adjustable load impedance of the secondary loop according to the test product information and the test control parameters;
the fourth step: controlling the running of the test and starting the test, inquiring whether to start remote communication, and entering the next step when receiving a remote communication response;
the fifth step: judging the test mode of the test sample, when the test mode of the test sample is AC3, running the program to enter the sixth step, when the test mode of the test sample is AC4, running the program to enter the seventh step, and if the test mode of the test sample is neither AC3 nor AC4, running the program to enter the other mode judgment execution module;
and a sixth step: comprises that
The method comprises a first sub-step of carrying out transformation ratio gear switching aiming at a primary circuit large current detection mutual inductor, a primary circuit small current detection mutual inductor, a secondary circuit large current detection mutual inductor and a secondary circuit small current detection mutual inductor according to input test article information;
a second substep of connecting the first electronic accompanying test article;
a third substep, starting the high-speed data acquisition card, and carrying out data acquisition on the coil voltage, the coil current, the main contact voltage and the main contact current by the high-speed data acquisition card;
in the fourth substep, the Nth test sample coil of the test sample group of the primary loop contactor and the test sample group of the secondary loop contactor are electrified, and the contact is attracted;
a fifth substep, when the large current conducting time of the first electronic accompanying sample reaches the timing point, controlling the first electronic accompanying sample to be disconnected, and simultaneously controlling the second electronic accompanying sample to be conducted;
a sixth substep, controlling the N test article coil of the test article group to lose power and the contact to be disconnected when the conduction time of the N test article of the test article group reaches the specified pull-in time in the test control parameter;
a seventh substep, controlling the second electronic accompanying test article to be disconnected and then entering the eighth substep;
the seventh step: comprises that
The first sub-process is used for carrying out transformation ratio gear switching aiming at a primary loop large current detection mutual inductor and a secondary loop large current detection mutual inductor according to input test article information;
a second sub-process, wherein the first electronic accompanying test article is connected;
in the third sub-process, starting a high-speed data acquisition card, and performing data acquisition on the coil voltage, the coil current, the main contact voltage and the main contact current by the high-speed data acquisition card;
in the fourth sub-process, the Nth test sample coil of the test sample group is electrified, and the contact is attracted;
in the fifth sub-process, the conduction time of the Nth test article in the test article group reaches the specified attraction time in the test control parameters, the Nth test article coil in the test article group is controlled to lose power, and the contact is disconnected;
a sixth sub-process, which is to control the first electronic accompanying test article to enter the eighth step after being disconnected;
eighth step: calling a parameter calculation and waveform display module, reading test detection parameters acquired by a high-speed data acquisition card to a program buffer area, calculating the test detection parameters, and displaying the test voltage, the test current, the coil voltage and the waveform of the coil current of a test article;
the ninth step: judging whether the state of the current test sample is abnormal according to the collected test detection parameters, if so, entering a fault processing program, judging the fault form of the test sample, displaying the fault state of the test sample, accumulating the fault times of the current test sample, and if so, rejecting the test sample; otherwise, entering the next step;
the tenth step: inquiring whether a keyboard of the industrial control computer inputs a pause test instruction, if so, skipping the program to the fourth step, and if not, entering the next step;
the eleventh step: judging whether the test articles in the test article group of the first loop contactor and the test article group of the second loop contactor have finished single test action circulation or not, if not, carrying out the connection or disconnection operation of the next test article, skipping the program to the fifth step, if so, accumulating the times of the single test action circulation, and entering the next step;
and step ten, judging whether the times of single test action circulation reach a set value, the times are reached or all the test articles fail, finishing the test, and if not, skipping the program to the step five.
Compared with the prior art, the invention has the beneficial technical effects that:
1. by adding a set of load and a control loop, different types of test products with different current specifications are tested in a time-sharing mode in one test period, so that the test efficiency is improved, and the test cost is reduced;
2. the test process data is recorded in real time in the test process, and data resources can be provided for the service life prediction of the contactor;
3. the primary loop large current detection mutual inductor, the primary loop small current detection mutual inductor, the secondary loop large current detection mutual inductor and the secondary loop small current detection mutual inductor are all provided with transformation ratios of a plurality of gears, so that the accuracy of data acquisition can be ensured;
4. the test can also automatically detect the product fault, and the fault test article is rejected when the fault occurs by utilizing the software and hardware dual protection.
Drawings
FIG. 1 is a primary electrical diagram of an embodiment of the present invention;
FIG. 2 is a block diagram of a first portion of the control principles in an embodiment of the present invention;
FIG. 3 is a block diagram of the second part of the control principle in the embodiment of the present invention;
FIG. 4 is a block diagram of a third control principle in an embodiment of the present invention;
FIG. 5 is a flow control diagram of an embodiment of the present invention.
Detailed Description
As shown in figure 1, an alternating current contactor electric life test device based on a large-capacity electronic accompanying test article comprises a first breaker QF1, a second breaker QF2, a 1/6Ue transformer T, a first electronic accompanying test article KS1, a second electronic accompanying test article KS2, a loop contactor test article group 2, a second loop contactor test article group 3, a loop adjustable impedance load and a two-loop adjustable impedance load, three-phase alternating currents L1, L2 and L3 are divided into two branches after passing through the first breaker QF1, one branch is connected to the input end of the first electronic accompanying test article KS1 through a fuse combination, the other branch is connected to the input end of the second electronic accompanying test article KS2 after being stepped down through the second breaker QF2 and the 1/6Ue transformer T, the output end of the first electronic accompanying test article KS1 is connected to the output end of the loop contactor test article group 2 after being connected to the output end of the loop adjustable impedance load circuit of the second electronic accompanying test article KS2, the parallel connection terminal of the output terminal of the first electronic test article KS1 and the output terminal of the second electronic test article KS2 is also connected to a two-loop adjustable impedance load circuit through a two-loop contactor test article group 3. Here, the primary loop contactor sample group includes contactors SP 1-SP 3, the secondary loop contactor sample group includes contactors SP 4-SP 6, the primary loop adjustable impedance load provides load for the primary loop contactor sample group 2, and the secondary loop adjustable impedance load provides load for the secondary loop contactor sample group 3.
As shown in fig. 2, 3 and 4, the ac contactor electric life test device based on the large-capacity electronic accompanying test article further comprises
The high-speed data acquisition card 7 is used for detecting coil voltage, coil current, test voltage and test current;
the digital signal input circuit 6 is used for detecting the switch states of the auxiliary contacts of the test products in the first loop contactor test product group 2 and the second loop contactor test product group 3;
the digital signal output circuit 8 controls the solid relay group 83 to respectively drive the first electronic accompanying test article KS1, the second electronic accompanying test article KS2, the first loop contactor test article group 2 and the second loop contactor test article group 3 to be switched on or switched off through the output interlocking circuit 81 and the output isolation circuit 82;
a loop large current detection transformer 1TA1, a loop small current detection transformer 1TA2, a two-loop large current detection transformer 2TA1 and a two-loop small current detection transformer 2TA2 with more than one transformation ratio;
and an industrial control computer 1, the industrial control computer 1 drives the test articles in the primary loop contactor test article group 2 and the secondary loop contactor test article group 3 through a digital signal output circuit 8, and performs on-off or on-off according to a test action mode required by AC3 or AC4, the industrial control computer 1 receives signal input from a high-speed data acquisition card 7 and a digital signal input circuit 6, outputs a control signal to the digital signal output circuit 8, and drives a primary loop large current detection transformer transformation ratio switching module 8a, a primary loop small current detection transformer transformation ratio switching module 8b, a secondary loop large current detection transformer transformation ratio switching module 8c and a secondary loop small current detection transformer transformation ratio switching module 8d to respectively realize transformation ratio switching on a primary loop large current detection transformer 1TA1, a primary loop small current detection transformer 1TA2, a secondary loop large current detection transformer 2TA1 and a secondary loop small current detection transformer 2TA 2.
Here, the transformation ratios of the primary large current detection transformer 1TA1 are 7500/5, 2000/5 and 500/5, the transformation ratios of the primary small current detection transformer 1TA2 are 750/5, 200/5 and 50/5, the transformation ratios of the secondary large current detection transformer 2TA1 are 1500/5, 500/5 and 150/5, and the transformation ratios of the secondary small current detection transformer 2TA2 are 250/5, 75/5 and 25/5.
A loop heavy current detection mutual-inductor 1TA1 wears to arrange in the connecting wire of first electron accompanying article KS1 and a loop contactor article group 2, a loop small current detection mutual-inductor 1TA2 wears to arrange in the connecting wire of second electron accompanying article KS2 and a loop contactor article group 2, two return circuits heavy current detection mutual-inductor 2TA1 wears to arrange in the connecting wire of first electron accompanying article KS1 and two return circuits contactor article group 3, two return circuits small current detection mutual-inductor 2TA2 wears to arrange in the connecting wire of second electron accompanying article KS2 and two return circuits contactor article group 3.
As shown in fig. 5, a method for testing the electrical life of an ac contactor based on a large-capacity electronic accompanying sample,
a first step 101: newly building a test file;
a second step 102: setting test parameters, storing the test parameters into a test file, wherein the test parameters comprise
Test sample information is input into a test file according to the test sample information, the test sample information comprises the model, rated current and rated voltage of the test sample in the first loop contactor test sample group 2 and the second loop contactor test sample group 3,
test control parameters, the test articles in the first loop contactor test article group 2 and the second loop contactor test article group 3 are controlled according to the test control parameters, the test control parameters comprise the number of the test articles, the test switch-on current, the breaking current, the pull-in time, the release time, the operating frequency, the power factor and the test cycle number,
test detection parameters including coil voltage, coil current, test voltage, test current, and auxiliary contact switch state,
fault judgment parameters comprise a coil pull-in time overrun threshold, a coil release time overrun threshold, a main contact pressure drop upper limit threshold and a main contact pressure drop lower limit threshold, and fault analysis and judgment are carried out according to the fault judgment parameters;
a third step 103: adjusting control power supplies of the test products in the primary circuit contactor test product group 2 and the secondary circuit contactor test product group 3, and adjustable load impedance of the primary circuit and the adjustable load impedance of the secondary circuit according to the test product information and the test control parameters;
fourth steps 104, 105, 106: controlling the running of the test and starting the test, inquiring whether to start remote communication, and entering the next step when receiving a remote communication response;
the fifth step 107: judging the test mode of the test sample, when the test mode of the test sample is AC3, running the program to enter the sixth step, when the test mode of the test sample is AC4, running the program to enter the seventh step, and if the test mode of the test sample is neither AC3 nor AC4, running the program to enter the other mode judgment execution module;
and a sixth step: comprises that
The first substep 109, according to the input test article information, performing transformation ratio gear switching for a primary circuit large current detection transformer 1TA1, a primary circuit small current detection transformer 1TA2, a secondary circuit large current detection transformer 2TA1 and a secondary circuit small current detection transformer 2TA 2;
a second substep 1091 of switching on the first electronic test article KS 1;
a third substep 1092 of starting the high speed data acquisition card 7, and performing data acquisition on the coil voltage, the coil current, the main contact voltage and the main contact current by the high speed data acquisition card 7;
a fourth substep 1093, energizing the coil of the Nth test product SPN of the first loop contactor test product group 2 and the second loop contactor test product group 3, and closing the contact;
in the fifth substeps 1094 and 1095, the large-current conducting time of the first electronic test article KS1 reaches a timing point, the first electronic test article KS1 is controlled to be disconnected, and meanwhile, the second electronic test article KS2 is controlled to be connected;
a sixth substep 1096, in which the turn-on time of the nth test product SPN of the test product group reaches the specified pull-in time in the test control parameters, the nth test product SPN coil of the test product group is controlled to lose power, and the contact is disconnected;
a seventh substep 1097 of controlling the second electronic test article KS2 to be disconnected, and then entering an eighth substep 111;
the seventh step: comprises that
The first sub-process 110 is used for carrying out transformation ratio gear shifting aiming at a primary loop large current detection transformer 1TA1 and a secondary loop large current detection transformer 2TA1 according to input test article information;
a second sub-process 1101, in which the first electronic test article KS1 is switched on;
in a third sub-process 1102, starting the high-speed data acquisition card 7, and performing data acquisition on the coil voltage, the coil current, the main contact voltage and the main contact current by the high-speed data acquisition card 7;
in the fourth sub-process 1103, the nth test piece SPN coil of the test piece group is powered on, and the contact is closed;
in the fifth sub-process 1104, the on time of the nth test product SPN in the test product group reaches the specified pull-in time in the test control parameters, and the nth test product SPN coil in the test product group is controlled to lose power, and the contact is disconnected;
a sixth sub-process 1105, after controlling the first electronic test article KS1 to be disconnected, entering the eighth step 111;
an eighth step 111: calling a parameter calculation and waveform display module, reading test detection parameters acquired by the high-speed data acquisition card 7 to a program buffer area, calculating the test detection parameters, and displaying the test voltage, the test current, the coil voltage and the waveform of the coil current of the test article;
ninth steps 112, 113: judging whether the state of the current test sample is abnormal according to the collected test detection parameters, if so, entering a fault processing program 114, judging the fault form of the test sample, displaying the fault state of the test sample, accumulating the fault times of the current test sample, and if so, rejecting the test sample; otherwise, entering the next step;
the tenth step 115: inquiring whether a keyboard of the industrial control computer inputs a pause test instruction, if so, skipping the program to the fourth steps 104, 105 and 106, and if not, entering the next step;
eleventh step 116: judging whether the test articles in the first loop contactor test article group 2 and the second loop contactor test article group 3 have completed single test action circulation or not, if not, carrying out the connection or disconnection operation of the next test article, skipping the program to the fifth step 107, if so, accumulating the times of the single test action circulation, and entering the next step;
twelfth step 118: and judging whether the times of the single test action circulation reach a set value or not, the times are reached or all the test articles fail, finishing the test, and if not, skipping to the fifth step 107.
Claims (4)
1. The utility model provides a test device of ac contactor electricity life-span based on article are accompanied to large capacity electron, its characterized in that: comprises a first circuit breaker, a second circuit breaker, an 1/6Ue transformer, a first electronic accompanying test article, a second electronic accompanying test article, a loop contactor test article group, a second loop contactor test article group, a loop adjustable impedance load and a second loop adjustable impedance load, wherein three-phase alternating current is divided into two branches after passing through the first circuit breaker, one branch is connected to the input end of the first electronic accompanying test article through a fuse combination, the other branch is connected to the input end of the second electronic accompanying test article after being subjected to voltage reduction through the second circuit breaker and a 1/6Ue transformer, the output end of the first electronic accompanying test article is connected with the output end of the second electronic accompanying test article in parallel, the circuit is connected to a loop contactor test article group, the rear end of the loop contactor test article group is connected with a loop adjustable impedance load circuit, and the parallel connection line ends of the output end of the first electronic accompanying test article and the output end of the second electronic accompanying test article are also connected to a second loop adjustable impedance load circuit through a second loop contactor test article group.
2. The AC contactor electric life test device based on the large-capacity electronic accompanying test article as claimed in claim 1, wherein: AC contactor electric life test device based on large capacity electron accompany examination article still includes
The high-speed data acquisition card is used for detecting coil voltage, coil current, test voltage and test current;
the digital signal input circuit is used for detecting the switch states of the auxiliary contacts of the test articles in the first loop contactor test article group and the second loop contactor test article group;
the digital signal output circuit controls the solid state relay group to respectively drive the first electronic accompanying test article, the second electronic accompanying test article, the first loop contactor test article group and the second loop contactor test article group to be switched on or switched off through the output interlocking circuit and the output isolation circuit;
a loop large current detection mutual inductor, a loop small current detection mutual inductor, a secondary loop large current detection mutual inductor and a secondary loop small current detection mutual inductor with more than one transformation ratio;
and an industrial control computer for driving the test articles in the first loop contactor test article group and the second loop contactor test article group through the digital signal output circuit, the switch-on and switch-off are carried out according to the test action mode required by AC3 or AC4, the industrial control computer receives the signal input from the high-speed data acquisition card and the digital signal input circuit, outputs the control signal to the digital signal output circuit, and the transformation ratio switching module of a loop large current detection mutual inductor, the transformation ratio switching module of a loop small current detection mutual inductor, the transformation ratio switching module of a two-loop large current detection mutual inductor and the transformation ratio switching module of a two-loop small current detection mutual inductor are driven by a silicon controlled control circuit to respectively realize transformation ratio switching on the loop large current detection mutual inductor, the loop small current detection mutual inductor, the two-loop large current detection mutual inductor and the two-loop small current detection mutual inductor.
3. The AC contactor electric life test device based on the large-capacity electronic accompanying test article as claimed in claim 2, wherein: a loop heavy current detection mutual-inductor wears to arrange in the connecting wire that first electron was accompanied the test article and a loop contactor test article group, and a loop low current detection mutual-inductor wears to arrange in the connecting wire that second electron was accompanied the test article and a loop contactor test article group, and two loop heavy current detection mutual-inductors wear to arrange in the connecting wire that first electron was accompanied the test article and two loop contactor test article groups, and two loop low current detection mutual-inductors wear to arrange in the connecting wire that second electron was accompanied the test article and two loop contactor test article groups.
4. A method for testing the electric service life of an alternating current contactor based on a high-capacity electronic accompanying test article is characterized by comprising the following steps of:
the first step is as follows: newly building a test file;
the second step is that: setting test parameters, storing the test parameters into a test file, wherein the test parameters comprise
Test sample information is input into the test file according to the test sample information, the test sample information comprises the model, the rated current and the rated voltage of the test sample in the first loop contactor test sample group and the second loop contactor test sample group,
test control parameters, which are used for controlling the actions of the test articles in the test article group of the first loop contactor and the test article group of the second loop contactor according to the test control parameters, wherein the test control parameters comprise the number of the test articles, the test switch-on current, the breaking current, the pull-in time, the release time, the operating frequency, the power factor and the test cycle number,
test detection parameters including coil voltage, coil current, test voltage, test current, and auxiliary contact switch state,
fault judgment parameters comprise a coil pull-in time overrun threshold, a coil release time overrun threshold, a main contact pressure drop upper limit threshold and a main contact pressure drop lower limit threshold, and fault analysis and judgment are carried out according to the fault judgment parameters;
the third step: adjusting control power supplies of the test products in the test product group of the primary loop contactor and the test product group of the secondary loop contactor, and adjustable load impedance of the primary loop and adjustable load impedance of the secondary loop according to the test product information and the test control parameters;
the fourth step: controlling the running of the test and starting the test, inquiring whether to start remote communication, and entering the next step when receiving a remote communication response;
the fifth step: judging the test mode of the test sample, when the test mode of the test sample is AC3, running the program to enter the sixth step, when the test mode of the test sample is AC4, running the program to enter the seventh step, and if the test mode of the test sample is neither AC3 nor AC4, running the program to enter the other mode judgment execution module;
and a sixth step: comprises that
The method comprises a first sub-step of carrying out transformation ratio gear switching aiming at a primary circuit large current detection mutual inductor, a primary circuit small current detection mutual inductor, a secondary circuit large current detection mutual inductor and a secondary circuit small current detection mutual inductor according to input test article information;
a second substep of connecting the first electronic accompanying test article;
a third substep, starting the high-speed data acquisition card, and carrying out data acquisition on the coil voltage, the coil current, the main contact voltage and the main contact current by the high-speed data acquisition card;
in the fourth substep, the Nth test sample coil of the test sample group of the primary loop contactor and the test sample group of the secondary loop contactor are electrified, and the contact is attracted;
a fifth substep, when the large current conducting time of the first electronic accompanying sample reaches the timing point, controlling the first electronic accompanying sample to be disconnected, and simultaneously controlling the second electronic accompanying sample to be conducted;
a sixth substep, controlling the N test article coil of the test article group to lose power and the contact to be disconnected when the conduction time of the N test article of the test article group reaches the specified pull-in time in the test control parameter;
a seventh substep, controlling the second electronic accompanying test article to be disconnected and then entering the eighth substep;
the seventh step: comprises that
The first sub-process is used for carrying out transformation ratio gear switching aiming at a primary loop large current detection mutual inductor and a secondary loop large current detection mutual inductor according to input test article information;
a second sub-process, wherein the first electronic accompanying test article is connected;
in the third sub-process, starting a high-speed data acquisition card, and performing data acquisition on the coil voltage, the coil current, the main contact voltage and the main contact current by the high-speed data acquisition card;
in the fourth sub-process, the Nth test sample coil of the test sample group is electrified, and the contact is attracted;
in the fifth sub-process, the conduction time of the Nth test article in the test article group reaches the specified attraction time in the test control parameters, the Nth test article coil in the test article group is controlled to lose power, and the contact is disconnected;
a sixth sub-process, which is to control the first electronic accompanying test article to enter the eighth step after being disconnected;
eighth step: calling a parameter calculation and waveform display module, reading test detection parameters acquired by a high-speed data acquisition card to a program buffer area, calculating the test detection parameters, and displaying the test voltage, the test current, the coil voltage and the waveform of the coil current of a test article;
the ninth step: judging whether the state of the current test sample is abnormal according to the collected test detection parameters, if so, entering a fault processing program, judging the fault form of the test sample, displaying the fault state of the test sample, accumulating the fault times of the current test sample, and if so, rejecting the test sample; otherwise, entering the next step;
the tenth step: inquiring whether a keyboard of the industrial control computer inputs a pause test instruction, if so, skipping the program to the fourth step, and if not, entering the next step;
the eleventh step: judging whether the test articles in the test article group of the first loop contactor and the test article group of the second loop contactor have finished single test action circulation or not, if not, carrying out the connection or disconnection operation of the next test article, skipping the program to the fifth step, if so, accumulating the times of the single test action circulation, and entering the next step;
and step ten, judging whether the times of single test action circulation reach a set value, the times are reached or all the test articles fail, finishing the test, and if not, skipping the program to the step five.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114034896A (en) * | 2021-11-15 | 2022-02-11 | 中国南方电网有限责任公司超高压输电公司柳州局 | Current multiplication device, control method and control device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114034896A (en) * | 2021-11-15 | 2022-02-11 | 中国南方电网有限责任公司超高压输电公司柳州局 | Current multiplication device, control method and control device |
| CN114034896B (en) * | 2021-11-15 | 2024-05-24 | 中国南方电网有限责任公司超高压输电公司柳州局 | Current multiplying device, control method and control device |
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