CN113533920B - Automatic withstand voltage test device and method for insulating partition plate - Google Patents
Automatic withstand voltage test device and method for insulating partition plate Download PDFInfo
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- CN113533920B CN113533920B CN202111065760.7A CN202111065760A CN113533920B CN 113533920 B CN113533920 B CN 113533920B CN 202111065760 A CN202111065760 A CN 202111065760A CN 113533920 B CN113533920 B CN 113533920B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
- G01R31/1263—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
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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
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/52—Testing for short-circuits, leakage current or ground faults
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Abstract
The application discloses automatic withstand voltage test device and method for insulating partition plates. The test voltage is input to the to-be-tested insulating partition plates on the multiple voltage branches by setting the voltage applying value and the voltage applying time of the automatic discharge module, the leakage current is collected by the leakage current collecting module, the qualified condition of the insulating strength of the to-be-tested insulating partition plates is judged according to the leakage current by the central controller, and the branch control module is driven to close the test voltage conducting state of the unqualified to-be-tested insulating partition plates, so that the voltage withstand test on the branch is only stopped, and the voltage withstand test of other qualified to-be-tested insulating partition plates is not influenced. Compared with manual tests, the device has the advantages of higher working efficiency of the pressure-resistant test of the edge partition plate, simple and convenient test process and lower possibility of misjudgment.
Description
Technical Field
The application relates to the technical field of insulating material performance testing, in particular to an automatic withstand voltage test device and method for an insulating partition plate.
Background
The voltage test of the insulating partition plate is to apply voltage specified by regulations to one end of the insulating partition plate to be tested, and the other end of the insulating partition plate is grounded, if no breakdown, no flashover and no overheating phenomenon occur in the process of the voltage test, the insulating partition plate is regarded as qualified.
The traditional insulation partition plate voltage-withstand test method is that before a test, a tester checks the surface condition of an insulation partition plate, the check is carried out on the insulation partition plates without abnormity piece by piece, each test places one insulation partition plate on a test platform, the test of a first insulation partition plate is completed, whether the insulation partition plate is qualified or not is judged manually, then the test of a second insulation partition plate is carried out, and the process is repeated until all the insulation partition plate tests are completed. And finally, manually inputting a test report of the insulation partition board by a tester, and manually writing a calibration certificate one by the tester to be attached to each qualified insulation partition board. Therefore, in the existing edge partition plate voltage-withstand test, testers check the surface condition of each insulating partition plate, the working efficiency is low due to the fact that manual voltage boosting and manual voltage reducing are adopted in the test process, the voltage boosting and the voltage reducing are adopted block by block, time and labor are wasted in the voltage-withstand test, the test process is repeated and tedious, meanwhile, whether the insulating partition plates are qualified or not is judged manually, and the possibility of misjudgment is high.
Disclosure of Invention
The application provides an automatic withstand voltage test device and method for an insulating partition plate, which are used for solving the technical problems that the working efficiency of the withstand voltage test of the edge partition plate is low, the test process is repeated and tedious, and the possibility of misjudgment is high.
In view of this, the first aspect of the present application provides an automatic withstand voltage test apparatus for an insulating partition, including: the device comprises a laser scanning imaging module, a central controller, a leakage current acquisition module, a test platform, a branch control module and an automatic discharge module; the test platform is used for placing a plurality of insulating partition plates to be tested;
the laser scanning imaging module is used for performing laser scanning on the surface of the insulating partition plate to be detected to obtain a surface image and transmitting the surface image to the central controller;
the automatic discharging module is used for inputting test voltage to each insulating partition plate to be tested through a plurality of preset voltage branches; the leakage current acquisition module is used for acquiring the leakage current value of the insulation partition plate to be detected and transmitting the leakage current value to the central controller;
the central controller is used for receiving the surface image and the leakage current which are respectively transmitted by the laser scanning imaging module and the leakage current acquisition module; the device is also used for judging whether the surface state of the insulation partition board to be detected is qualified or not according to the surface image based on a preset expert database, judging whether the insulation strength of the insulation partition board to be detected is qualified or not according to the leakage current value based on the preset expert database, and if the surface state and/or the insulation strength of the insulation partition board to be detected are/is unqualified, marking the corresponding insulation partition board to be detected as unqualified, generating a branch control signal and sending the branch control signal to the branch control module; if the surface state and the insulation strength of the insulation partition plate to be detected are both qualified, marking the corresponding insulation partition plate to be detected as qualified;
a microcomputer control voltage source is arranged in the central controller, is electrically connected with the automatic discharge module and is used for controlling the applied voltage value and the applied voltage time of the test voltage of the automatic discharge module;
the branch control module is arranged on a voltage branch circuit between the automatic discharge module and each insulating partition plate to be tested and used for transmitting the test voltage transmitted by the automatic discharge module to the insulating partition plate to be tested; and the test voltage input device is also used for receiving the branch control signal sent by the central controller and switching the conduction state according to the branch control signal, so that the test voltage is stopped being input to the to-be-tested insulating partition plate marked as unqualified.
Optionally, the leakage current collecting module includes a leakage current transformer and an a/D converter, the leakage current transformer is configured to collect a simulated leakage current value of the insulating partition to be detected, and is further configured to transmit the simulated leakage current value to the a/D converter, and the a/D converter is configured to analog-to-digital convert the simulated leakage current value into a digital leakage current value, and is further configured to transmit the digital leakage current value to the central controller.
Optionally, the bypass control module comprises a thyristor switch.
Optionally, the apparatus further comprises a printing module, the central controller being electrically connected to the printing module;
the central controller is further used for generating a withstand voltage test report according to the attribute information of the insulating partition plate to be tested, the qualified condition of the surface state, the qualified condition of the insulating strength, the leakage current value, the applied voltage value and the voltage application time, and is further used for transmitting the withstand voltage test report to the printing module for printing.
Optionally, the device further comprises a human-computer interaction module, wherein the human-computer interaction module is electrically connected with the central processing unit, and is used for realizing human-computer data interaction and displaying attribute information, qualified surface state, qualified insulation strength, leakage current value, applied voltage value and voltage application time of each insulating partition plate to be tested;
and when the insulation partition board to be tested is marked as unqualified, alarming according to the corresponding attribute information of the insulation partition board to be tested.
Optionally, the device further comprises a communication module, a first end of the communication module is electrically connected with the laser scanning imaging module, the leakage current collecting module, the branch control module and the automatic discharging module, and a second end of the communication module is electrically connected with the central processing unit.
Optionally, the device further comprises a power module electrically connected to the central controller.
In a second aspect, the invention further provides a testing method based on the automatic withstand voltage testing device for the insulating partition, which includes the following steps:
s1, carrying out laser scanning on the surface of each insulating partition plate to be tested preset on the test platform through a laser scanning imaging module to obtain a surface image, and transmitting the surface image to a central controller;
s2, judging whether the surface state of the insulating partition board to be detected is qualified or not according to the surface image through the central controller based on a preset expert database, if so, executing a step S3, and if not, executing a step S7;
s3, setting the applied voltage value and the voltage application time of the test voltage of the automatic discharge module through a microcomputer control voltage source, and transmitting the test voltage to the insulating partition plate to be tested through the automatic discharge module and the branch control module;
s4, collecting the leakage current value of the insulation partition plate to be detected through a leakage current collecting module, and transmitting the leakage current value to the central controller;
s5, judging whether the insulation strength of the insulation partition board to be detected is qualified or not according to the leakage current value through the central controller based on the preset expert database, and executing the step S6 if the insulation strength of the insulation partition board to be detected is judged to be qualified; if the insulation strength of the insulation partition board to be tested is judged to be unqualified, executing step S7;
s6, marking the corresponding insulating partition board to be tested as qualified, and controlling the automatic discharging module to stop discharging of the corresponding voltage branch circuit through the central controller when the voltage application time reaches the set voltage application time;
and S7, marking the corresponding insulation partition board to be tested as unqualified, generating a branch control signal through the central controller, sending the branch control signal to the branch control module, and switching the conduction state through the branch control module according to the branch control signal, so as to stop inputting the test voltage to the insulation partition board to be tested marked as unqualified.
Optionally, the method further comprises:
generating a withstand voltage test report according to the attribute information of the insulating partition plate to be tested, the qualified condition of the surface state, the qualified condition of the insulating strength, the leakage current value, the applied voltage value and the voltage application time by the central controller;
and transmitting the withstand voltage test report to a printing module for printing through the central controller.
Optionally, the method further comprises:
realizing man-machine data interaction with the central controller through a man-machine interaction module, and displaying attribute information, qualified surface state, qualified insulation strength, leakage current value, applied voltage value and voltage application time of each insulating partition plate to be tested; and when the insulating partition board to be tested is marked as unqualified, giving an alarm according to the corresponding attribute information of the insulating partition board to be tested.
According to the technical scheme, the invention has the following advantages:
the invention can place a plurality of insulation partition boards to be tested at one time for a voltage withstand test, and the laser scanning imaging module is used for carrying out surface imaging on the insulation partition boards to be tested so as to detect the surface state of the insulation partition boards. The central controller is used for setting the voltage applying value and the voltage applying time of the automatic discharging module to input test voltage to the insulating partition plates to be tested on the multiple voltage branches, the leakage current collecting module is used for collecting leakage current, the central controller is used for judging the qualified condition of the insulating strength of the insulating partition plates to be tested according to the leakage current, and when the surface state and/or the insulating strength of a certain insulating partition plate to be tested are unqualified, the branch control module is driven to close the test voltage conduction state of the unqualified insulating partition plate to be tested, so that the voltage withstand test on the branch is only stopped, and the voltage withstand test of other qualified insulating partition plates to be tested is not influenced. Compared with a manual test, the working efficiency of the pressure-resistant test of the edge partition plate is high, the test process is simple and convenient, and the possibility of misjudgment is low.
Drawings
FIG. 1 is a flow chart of a pressure resistance test in the prior art;
fig. 2 is a schematic structural diagram of an automatic withstand voltage test apparatus for an insulating partition provided in an embodiment of the present application;
FIG. 3 is an electrical primary wiring diagram provided by an embodiment of the present application;
FIG. 4 is a graph of applied voltage values versus voltage application times provided by an embodiment of the present application;
fig. 5 is a flowchart of a testing method based on an automatic withstand voltage testing apparatus for an insulating spacer according to an embodiment of the present application.
Detailed Description
In order to make the technical solutions of the present application better understood, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Currently, in the prior art, as shown in fig. 1, 10 insulating separators are taken as an example of a batch. According to the pressure resistance test procedure of the prior art method, the pressure resistance test of one insulating separator takes about 5 minutes, and then the total pressure resistance test of 10 insulating separators takes about 50 minutes. After the batch of tests is finished, the testers need to issue test reports of the batch again, the time is about 5 minutes, and the testers can take about 3 minutes by handwriting the calibration card one by one. The total time it takes for a batch of work to complete is about 58 minutes. Therefore, the surface condition of each insulating partition plate is checked by a tester, manual boosting and manual voltage reduction are adopted in the test process, so that the working efficiency is low, the voltage is increased block by block, so that the voltage-withstanding test is time-consuming and labor-consuming, the test process is repeated and tedious, and meanwhile, whether the insulating partition plates are qualified or not is judged manually, so that the possibility of misjudgment is high.
Therefore, referring to fig. 2, the present invention provides an automatic voltage withstand test device for an insulating partition, comprising: the device comprises a laser scanning imaging module 100, a central controller 200, a leakage current acquisition module 300, a test platform 400, a branch control module 500 and an automatic discharge module 600;
the test platform 400 is used for placing a plurality of insulating partition boards 700 to be tested;
in this embodiment, the testing platform 400 can once hold a plurality of insulating spacers, one end of which is connected to the high voltage testing dedicated line, and the other end of which is grounded.
The laser scanning imaging module 100 is configured to perform laser scanning on the surface of the insulating partition 700 to be tested to obtain a surface image, and is further configured to transmit the surface image to the central controller 200;
it should be noted that the laser scanning imaging module 100 specifically collects the surface condition of the insulating partition, and mainly includes two aspects: firstly, whether the whole insulating partition plate is damaged, such as unfilled corner; and whether the insulating partition has cracks invisible to naked eyes or not. If the whole insulation partition board is damaged, the insulation partition board belongs to the insulation partition board with unqualified appearance inspection.
The automatic discharging module 600 is configured to input a test voltage to each insulating spacer 700 to be tested through a plurality of preset voltage branches;
the leakage current collecting module 300 is configured to collect a leakage current value of the insulating partition 700 to be detected, and further configured to transmit the leakage current value to the central controller 200;
the central controller 200 is configured to receive the surface image and the leakage current respectively transmitted by the laser scanning imaging module 100 and the leakage current collecting module 300; the device is further used for judging whether the surface state of the insulating partition 700 to be tested is qualified or not according to the surface image based on a preset expert database, judging whether the insulating strength of the insulating partition 700 to be tested is qualified or not according to the leakage current value based on the preset expert database, and if the surface state and/or the insulating strength of the insulating partition 700 to be tested are/is unqualified, marking the corresponding insulating partition 700 to be tested as unqualified, generating a branch control signal and sending the branch control signal to the branch control module 500; if the surface state and the insulation strength of the insulating partition 700 to be tested are qualified, marking the corresponding insulating partition 700 to be tested as qualified;
it should be noted that an expert database is established in the central controller 200, that is, an insulating partition board with a surface condition free from damage and cracks, that is, an insulating partition board with a qualified appearance, which is also a motherboard, is established. And polylith insulation barrier on test support can regard as the daughter board, after laser scanning imaging module 100 carries out the surface condition scanning to polylith daughter board, transmits the data of gathering to central controller 200 in real time, and central controller 200 compares polylith daughter board and mother board. If one of the data of the daughter board does not correspond to the data of the motherboard, the central controller 200 judges the daughter board as unqualified; if both the data of the daughter board correspond to the motherboard, the central controller 200 judges the daughter board as being qualified.
Meanwhile, a leakage current passing value is set in the expert database, when the leakage current value acquired by the leakage current acquisition module 300 is greater than the leakage current passing value, the insulation strength of the insulation partition plate is not qualified, and when the leakage current value acquired by the leakage current acquisition module 300 is not greater than the leakage current passing value, the insulation strength of the insulation partition plate is qualified.
A microcomputer control voltage source is arranged in the central controller 200, electrically connected with the automatic discharge module 600, and used for controlling the applied voltage value and the voltage application time of the test voltage of the automatic discharge module 600;
it is understood that the voltage value and the voltage application time of the test voltage may be set according to the requirement.
The branch control module 500 is arranged on a voltage branch between the automatic discharge module 600 and each insulating partition 700 to be tested, and is used for transmitting the test voltage transmitted by the automatic discharge module 600 to the insulating partition 700 to be tested; and is further configured to receive a branch control signal sent by the central controller 200, and switch the conduction state according to the branch control signal, thereby stopping inputting the test voltage to the insulation barrier 700 to be tested, which is marked as being unqualified.
The automatic withstand voltage test device of insulating barrier that this embodiment provided, it can once only place the polylith insulating barrier that awaits measuring and carry out withstand voltage test to carry out surface imaging to the insulating barrier that awaits measuring through laser scanning imaging module, detect its surface condition. The central controller is used for setting the voltage applying value and the voltage applying time of the automatic discharging module to input test voltage to the insulating partition plates to be tested on the multiple voltage branches, the leakage current collecting module is used for collecting leakage current, the central controller is used for judging the qualified condition of the insulating strength of the insulating partition plates to be tested according to the leakage current, and when the surface state and/or the insulating strength of a certain insulating partition plate to be tested are unqualified, the branch control module is driven to close the test voltage conduction state of the unqualified insulating partition plate to be tested, so that the voltage withstand test on the branch is only stopped, and the voltage withstand test of other qualified insulating partition plates to be tested is not influenced. Compared with a manual test, the working efficiency of the pressure-resistant test of the edge partition plate is high, the test process is simple and convenient, and the possibility of misjudgment is low.
The following is a detailed description of a specific embodiment of the automatic withstand voltage test device for the insulating partition provided by the invention.
As shown in FIG. 3, FIG. 3 is a diagram illustrating an electrical primary wiring diagram of the device, wherein the automatic discharging module comprises a thyristor VTAAnd a current limiting protection resistor R2. In normal withstand voltage test, i.e. applying voltage value U>0, voltage application time t>At 0, the thyristor VT on the self-discharge loopAIs in a normally open state; after the withstand voltage test is completed, the voltage value U is applied to 0When the adding time t is equal to 0, the self-discharging module is electrified and started, and the silicon controlled switch VTAAnd the self-discharge circuit is switched from a normally open state to a normally closed state, is conducted and electrically connected with the grounding end, and starts to discharge all the electric circuits of the insulating partition plates, so that the self-discharge function is realized.
The relation between the voltage value applied by the microcomputer controlled voltage source and the voltage application time is shown in fig. 4, wherein U is the voltage value of the high voltage side applied to the insulating separator to be tested, and the U value is boosted to the specified value shown in table 1 according to GB/T16927.1 between the two electrodes. t is t1In order to achieve the time when the voltage value of the insulation partition board is withstand, the voltage is automatically boosted at the boosting speed required by the national standard, generally 20 to 30s, t2Time for the central controller module to start voltage reduction, where t2And t1The difference was 1min, which is the withstand voltage test time.
TABLE 1 test items, periods and requirements of insulating separators
As shown in table 1, the voltage source setting application voltage value U of the microcomputer is set to four values of 30kV, 50kV, 60kV, and 80 kV. Before the tester carries out the test, directly select the required voltage value on the operation interface. For example, when a surface power frequency withstand voltage test with the rated voltage of 6-35kV of the insulating partition plate is carried out, a tester can directly select the required voltage value of 60kV on an operation interface to carry out the test; when a power frequency withstand voltage test with a rated voltage of 10kV insulation partition plate is carried out, a tester can directly select a required voltage value of 30kV on an operation interface, and then the test can be carried out; when a power frequency withstand voltage test with the rated voltage of 20kV of the insulating partition plate is carried out, a tester can directly select the required voltage value of 50kV on an operation interface, and then the test can be carried out. When a power frequency withstand voltage test with the rated voltage of 35kV of the insulating partition plate is carried out, a tester can directly select the required voltage value of 80kV on an operation interface, and then the test can be carried out.
As shown in fig. 3, R1 represents a protection resistance of the entire voltage-resistant circuit. The function of the test transformer is to limit the output current of the test transformer when the insulation partition board is broken down, thereby protecting the microcomputer control voltage source.
Furthermore, the leakage current collecting module comprises a leakage current transformer and an A/D converter, the leakage current transformer is used for collecting the analog leakage current value of the insulating partition plate to be detected and transmitting the analog leakage current value to the A/D converter, and the A/D converter is used for converting the analog leakage current value into a digital leakage current value in an analog-to-digital mode and transmitting the digital leakage current value to the central controller.
In this embodiment, as shown in fig. 3, there are a plurality of leakage current transformers CTA1、CTA2、...CTAnAre distributed on each voltage branch in turn and are connected with a plurality of corresponding insulation separators R to be testedPanel 1、RPlate 2、...RPlate nAnd the series connection is used for measuring the leakage current of each insulating partition plate.
Further, the branch control module comprises a silicon controlled switch.
As shown in FIG. 3, a thyristor switch VT is arranged on each insulation partition branchA1、VTA2、...VTAnThe thyristor switch is in a normally open state when the insulating partition plate of the branch is unqualified, so that the branch is disconnected from the microcomputer control voltage source, and other branches are not influenced to be continuously pressurized; when the insulating partition board of the branch circuit is abnormal, the silicon controlled switch is in a normally closed state, so that the branch circuit is kept connected with the microcomputer control voltage source, and the pressure of the branch circuit is continuously applied.
Furthermore, the system also comprises a printing module, wherein the central controller is electrically connected with the printing module;
the central controller is also used for generating a withstand voltage test report according to the attribute information of the insulating partition plate to be tested, the qualified condition of the surface state, the qualified condition of the insulating strength, the leakage current value, the applied voltage value and the voltage application time, and is also used for transmitting the withstand voltage test report to the printing module for printing.
Before the voltage-withstanding test, a plurality of insulating partition plates to be tested can be numbered, the attribute information of the insulating partition plates to be tested comprises basic information such as numbers, service lives, specifications and the like, a voltage-withstanding test report is generated according to the attribute information of the insulating partition plates to be tested, the qualified condition of the surface state, the qualified condition of the insulating strength, the leakage current value, the applied voltage value and the applied voltage time, and the voltage-withstanding test report is printed into a paper-version voltage-withstanding test report, so that the intelligence is improved, meanwhile, manual input of the test report is replaced, the test time is greatly shortened, the working efficiency is improved, and the problem that the original test process is repeated and complicated is solved.
Furthermore, the device also comprises a human-computer interaction module, wherein the human-computer interaction module is electrically connected with the central processing unit and is used for realizing human-computer data interaction and displaying attribute information, qualified surface state conditions, qualified insulation strength conditions, leakage current values, applied voltage values and voltage application time of each insulating partition plate to be tested;
and when the insulation partition board to be tested is marked as unqualified, alarming according to the attribute information of the corresponding insulation partition board to be tested.
In this embodiment, the human-computer interaction module includes a keyboard, a display and a conversion interface, and is used for human-computer interaction, parameter setting, and real-time display of the leakage current value and the surface state of each insulating partition plate.
And when the insulating partition board to be detected is marked as unqualified, alarming according to the attribute information of the corresponding insulating partition board to be detected, so that the unqualified insulating partition board to be detected can be quickly determined.
Furthermore, the device also comprises a communication module, wherein the first end of the communication module is respectively electrically connected with the laser scanning imaging module, the leakage current acquisition module, the branch control module and the automatic discharge module, and the second end of the communication module is electrically connected with the central processing unit.
It should be noted that the communication module may be wired or wireless.
Furthermore, the device also comprises a power supply module which is electrically connected with the central controller.
In this embodiment, the power module uses 20V/50HZ ac power to provide working power for the central controller.
The above is a detailed description of an embodiment of the automatic withstand voltage testing apparatus for an insulating spacer according to the present invention, and the following is a testing method based on the automatic withstand voltage testing apparatus for an insulating spacer, as shown in fig. 5, the method includes the following steps:
s1, performing laser scanning on the surface of each insulating partition plate to be tested preset on the test platform through a laser scanning imaging module to obtain a surface image, and transmitting the surface image to the central controller;
s2, judging whether the surface state of the insulation partition board to be detected is qualified or not according to the surface image through the central controller based on a preset expert database, if so, executing a step S3, and if not, executing a step S7;
s3, setting the applied voltage value and the voltage application time of the test voltage of the automatic discharge module through the microcomputer control voltage source, and transmitting the test voltage to the insulating partition plate to be tested through the automatic discharge module and the branch control module;
s4, collecting the leakage current value of the insulation partition board to be detected through a leakage current collecting module, and transmitting the leakage current value to a central controller;
s5, judging whether the insulation strength of the insulation partition board to be detected is qualified or not according to the leakage current value through the central controller based on a preset expert database, and executing the step S6 if the insulation strength of the insulation partition board to be detected is judged to be qualified; if the insulation strength of the insulation partition board to be tested is judged to be unqualified, executing step S7;
s6, marking the corresponding insulation partition board to be tested as qualified, and controlling the automatic discharging module to stop discharging of the corresponding voltage branch circuit through the central controller when the voltage application time reaches the set voltage application time;
and S7, marking the corresponding insulation partition board to be tested as unqualified, generating a branch control signal through the central controller, sending the branch control signal to the branch control module, and switching the conduction state through the branch control module according to the branch control signal, so as to stop inputting the test voltage to the insulation partition board to be tested marked as unqualified.
According to the test method based on the automatic voltage withstand test device for the insulating partition boards, provided by the embodiment, a plurality of insulating partition boards to be tested can be placed at one time for voltage withstand test, surface imaging is carried out on the insulating partition boards to be tested through the laser scanning imaging module, and the surface state of the insulating partition boards is detected. The central controller is used for setting the voltage applying value and the voltage applying time of the automatic discharging module to input test voltage to the insulating partition plates to be tested on the multiple voltage branches, the leakage current collecting module is used for collecting leakage current, the central controller is used for judging the qualified condition of the insulating strength of the insulating partition plates to be tested according to the leakage current, and when the surface state and/or the insulating strength of a certain insulating partition plate to be tested are unqualified, the branch control module is driven to close the test voltage conduction state of the unqualified insulating partition plate to be tested, so that the voltage withstand test on the branch is only stopped, and the voltage withstand test of other qualified insulating partition plates to be tested is not influenced. Compared with a manual test, the working efficiency of the pressure-resistant test of the edge partition plate is high, the test process is simple and convenient, and the possibility of misjudgment is low.
Further, the method also comprises the following steps:
s8, generating a withstand voltage test report according to the attribute information of the insulating partition plate to be tested, the qualified condition of the surface state, the qualified condition of the insulating strength, the leakage current value, the applied voltage value and the voltage application time through the central controller;
and S9, transmitting the withstand voltage test report to a printing module through the central controller for printing.
Before the voltage-withstanding test, a plurality of insulating partition plates to be tested can be numbered, the attribute information of the insulating partition plates to be tested comprises basic information such as numbers, service lives, specifications and the like, a voltage-withstanding test report is generated according to the attribute information of the insulating partition plates to be tested, the qualified condition of the surface state, the qualified condition of the insulating strength, the leakage current value, the applied voltage value and the applied voltage time, and the voltage-withstanding test report is printed into a paper-version voltage-withstanding test report, so that the intelligence is improved, meanwhile, manual input of the test report is replaced, the test time is greatly shortened, the working efficiency is improved, and the problem that the original test process is repeated and complicated is solved.
Further, the method also comprises the following steps:
s10, realizing man-machine data interaction with a central controller through a man-machine interaction module, and displaying attribute information, qualified surface state, qualified insulation strength, leakage current value, applied voltage value and voltage application time of each insulation partition board to be tested;
and when the insulating partition board to be detected is marked as unqualified, alarming according to the attribute information of the corresponding insulating partition board to be detected.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, a division of a unit is merely a logical division, and an actual implementation may have another division, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
Units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.
Claims (10)
1. The utility model provides an automatic withstand voltage test device of insulating barrier which characterized in that includes: the device comprises a laser scanning imaging module, a central controller, a leakage current acquisition module, a test platform, a branch control module and an automatic discharge module;
the test platform is used for placing a plurality of insulating partition plates to be tested;
the laser scanning imaging module is used for performing laser scanning on the surface of the insulating partition plate to be detected to obtain a surface image and transmitting the surface image to the central controller;
the automatic discharging module is used for inputting test voltage to each insulating partition plate to be tested through a plurality of preset voltage branches;
the leakage current acquisition module is used for acquiring the leakage current value of the insulating partition plate to be detected and transmitting the leakage current value to the central controller;
the central controller is used for receiving the surface image and the leakage current value which are respectively transmitted by the laser scanning imaging module and the leakage current acquisition module; the device is also used for judging whether the surface state of the insulation partition board to be detected is qualified or not according to the surface image based on a preset expert database, judging whether the insulation strength of the insulation partition board to be detected is qualified or not according to the leakage current value based on the preset expert database, and if the surface state and/or the insulation strength of the insulation partition board to be detected are/is unqualified, marking the corresponding insulation partition board to be detected as unqualified, generating a branch control signal and sending the branch control signal to the branch control module; if the surface state and the insulation strength of the insulation partition plate to be detected are both qualified, marking the corresponding insulation partition plate to be detected as qualified;
a microcomputer control voltage source is arranged in the central controller, is electrically connected with the automatic discharge module and is used for controlling the applied voltage value and the applied voltage time of the test voltage of the automatic discharge module;
the branch control module is arranged on a voltage branch circuit between the automatic discharge module and each insulating partition plate to be tested and used for transmitting the test voltage transmitted by the automatic discharge module to the insulating partition plate to be tested; and the test voltage input device is also used for receiving the branch control signal sent by the central controller and switching the conduction state according to the branch control signal, so that the test voltage is stopped being input to the to-be-tested insulating partition plate marked as unqualified.
2. The automatic withstand voltage test device of claim 1, wherein the leakage current collecting module comprises a leakage current transformer and an a/D converter, the leakage current transformer is configured to collect an analog leakage current value of the insulation barrier to be tested and further configured to transmit the analog leakage current value to the a/D converter, and the a/D converter is configured to analog-to-digital convert the analog leakage current value into a digital leakage current value and further configured to transmit the digital leakage current value to the central controller.
3. The automatic withstand voltage test device of claim 1, wherein the branch control module comprises a thyristor switch.
4. The automatic withstand voltage test device of the insulating separator according to claim 1, further comprising a printing module, wherein the central controller is electrically connected to the printing module;
the central controller is further used for generating a withstand voltage test report according to the attribute information of the insulating partition plate to be tested, the qualified condition of the surface state, the qualified condition of the insulating strength, the leakage current value, the applied voltage value and the voltage application time, and is further used for transmitting the withstand voltage test report to the printing module for printing.
5. The automatic withstand voltage test device of the insulating partition plate according to claim 1, further comprising a human-computer interaction module, wherein the human-computer interaction module is electrically connected with the central controller, is used for realizing human-computer data interaction, and is further used for displaying attribute information, qualified surface state conditions, qualified insulating strength conditions, leakage current values, applied voltage values and voltage application time of each insulating partition plate to be tested;
and when the insulation partition board to be tested is marked as unqualified, alarming according to the corresponding attribute information of the insulation partition board to be tested.
6. The automatic withstand voltage test device of claim 1, further comprising a communication module, wherein a first end of the communication module is electrically connected to the laser scanning imaging module, the leakage current collection module, the branch control module and the automatic discharge module, respectively, and a second end of the communication module is electrically connected to the central controller.
7. The automatic withstand voltage test device of claim 1, further comprising a power module electrically connected to the central controller.
8. A test method based on the automatic withstand voltage test device for the insulating partition board as claimed in any one of claims 1 to 7, is characterized by comprising the following steps:
s1, carrying out laser scanning on the surface of each insulating partition plate to be tested preset on the test platform through a laser scanning imaging module to obtain a surface image, and transmitting the surface image to a central controller;
s2, judging whether the surface state of the insulating partition board to be detected is qualified or not according to the surface image through the central controller based on a preset expert database, if so, executing a step S3, and if not, executing a step S7;
s3, setting the applied voltage value and the voltage application time of the test voltage of the automatic discharge module through a microcomputer control voltage source, and transmitting the test voltage to the insulating partition plate to be tested through the automatic discharge module and the branch control module;
s4, collecting the leakage current value of the insulation partition plate to be detected through a leakage current collecting module, and transmitting the leakage current value to the central controller;
s5, judging whether the insulation strength of the insulation partition board to be detected is qualified or not according to the leakage current value through the central controller based on the preset expert database, and executing the step S6 if the insulation strength of the insulation partition board to be detected is judged to be qualified; if the insulation strength of the insulation partition board to be tested is judged to be unqualified, executing step S7;
s6, marking the corresponding insulating partition board to be tested as qualified, and controlling the automatic discharging module to stop discharging of the corresponding voltage branch circuit through the central controller when the voltage application time reaches the set voltage application time;
and S7, marking the corresponding insulation partition board to be tested as unqualified, generating a branch control signal through the central controller, sending the branch control signal to the branch control module, and switching the conduction state through the branch control module according to the branch control signal, so as to stop inputting the test voltage to the insulation partition board to be tested marked as unqualified.
9. The testing method of claim 8, the automatic withstand voltage testing apparatus for insulating partition further comprising a printing module, the central controller being electrically connected to the printing module; it is characterized by also comprising:
generating a withstand voltage test report according to the attribute information of the insulating partition plate to be tested, the qualified condition of the surface state, the qualified condition of the insulating strength, the leakage current value, the applied voltage value and the voltage application time by the central controller;
and transmitting the withstand voltage test report to a printing module for printing through the central controller.
10. The testing method of claim 8, wherein the automatic withstand voltage testing device further comprises a human-computer interaction module electrically connected to the central controller, and further comprises:
realizing man-machine data interaction with the central controller through a man-machine interaction module, and displaying attribute information, qualified surface state, qualified insulation strength, leakage current value, applied voltage value and voltage application time of each insulating partition plate to be tested;
and when the insulating partition board to be tested is marked as unqualified, giving an alarm according to the corresponding attribute information of the insulating partition board to be tested.
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