CN113721099B - Fuse isolation test system in power capacitor and control method thereof - Google Patents
Fuse isolation test system in power capacitor and control method thereof Download PDFInfo
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- CN113721099B CN113721099B CN202111044526.6A CN202111044526A CN113721099B CN 113721099 B CN113721099 B CN 113721099B CN 202111044526 A CN202111044526 A CN 202111044526A CN 113721099 B CN113721099 B CN 113721099B
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- 239000003990 capacitor Substances 0.000 title claims abstract description 103
- 238000012360 testing method Methods 0.000 title claims abstract description 77
- 238000002955 isolation Methods 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title abstract description 20
- 238000005259 measurement Methods 0.000 claims abstract description 24
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 20
- 239000010959 steel Substances 0.000 claims abstract description 20
- 238000013102 re-test Methods 0.000 claims description 15
- 238000004891 communication Methods 0.000 claims description 11
- 230000015556 catabolic process Effects 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 239000010949 copper Substances 0.000 claims description 5
- 230000008569 process Effects 0.000 abstract description 8
- 206010014357 Electric shock Diseases 0.000 abstract description 4
- 208000027418 Wounds and injury Diseases 0.000 abstract description 4
- 230000006378 damage Effects 0.000 abstract description 4
- 208000014674 injury Diseases 0.000 abstract description 4
- 230000009471 action Effects 0.000 description 5
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000013101 initial test Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000010606 normalization Methods 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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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
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Abstract
The invention discloses a fuse isolation test system in a power capacitor and a control method thereof, wherein the system comprises a control terminal, a measurement module, a high-voltage direct-current power supply, a high-voltage alternating-current power supply, a switching wire device and a capacitor puncture test module, wherein the measurement module, the high-voltage direct-current power supply, the high-voltage alternating-current power supply, the switching wire device and the capacitor puncture test module are connected with the control terminal; the measuring module comprises a high-voltage bridge and a voltage measuring device, and the voltage measuring device is connected with the tested capacitor; one end of the switching wire device is connected with the high-voltage direct-current power supply, the high-voltage alternating-current power supply and the high-voltage bridge, and the other end of the switching wire device is connected with the tested capacitor; the capacitor puncture test module is used for placing a tested capacitor and driving steel nails into the tested capacitor. The system realizes automatic execution of the test process, automatic measurement, calculation and judgment, and effectively reduces the mechanical injury and electric shock risk of human bodies.
Description
Technical Field
The invention relates to the technical field of fuse isolation tests in power capacitors, in particular to a fuse isolation test system in a power capacitor and a control method thereof.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
The function of the fuse in the capacitor is to isolate the failed element when the internal element of the capacitor breaks down. The isolation test of fuses in capacitors generally adopts a direct-current voltage method, and simultaneously adopts a method of mechanically piercing a target element. However, the method has great difficulty in the specific operation process and has certain danger, and the concrete steps are as follows: before the test, the rated voltage of 1.27 times or 3.11 times is required to be applied to the two poles of the capacitor, and the rated voltage is usually tens of kilovolts; at the same time, nails need to be punched into the internal components of the capacitor through holes punched in the shell, so that the components are damaged, the internal fuse action is triggered, and the damaged components are isolated from other components. After the action, the change of the capacitance is measured and is not larger than the capacitance of one element, and the rated voltage is applied to the fracture of the element by 2.15 times, so that breakdown or flashover is not generated.
The existing test technology is as follows: the capacitor initial capacitance is measured using a high voltage bridge with reference to relevant national, industry standards. After the capacitor shell to be tested is drilled and manually wired, a specified direct-current voltage is applied to the capacitor by using a high-voltage direct-current power supply, and steel nails are knocked into the holes by using tools (insulating rods and the like), so that the risk to operators is high. And switching off the direct current power supply, then carrying out capacitance retest by adopting a high-voltage bridge, and finally carrying out a withstand voltage test on the capacitor by using a test transformer to observe whether breakdown flashover exists or not. The whole test process needs various equipment, is complex to operate and has high risk degree.
Under the condition, a device is very needed to replace manual test, the whole process is automatically executed, and the personal safety risk of operators is greatly reduced.
Through searching and investigation, no ideal complete test system for the fuse isolation test in the capacitor is found in China at present, and the invention can effectively solve the problem of safe operation of the fuse isolation test in the capacitor.
Disclosure of Invention
In order to solve the problems, the invention provides a fuse isolation test system in a power capacitor and a control method thereof, which realize automatic execution, automatic measurement, calculation and judgment of a test process and effectively reduce the risk of mechanical injury and electric shock of a person.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
A first aspect of the present invention provides a power capacitor internal fuse isolation test system comprising: the device comprises a control terminal, a measurement module, a high-voltage direct-current power supply, a high-voltage alternating-current power supply, a switching wire device and a capacitor puncture test module, wherein the measurement module, the high-voltage direct-current power supply, the high-voltage alternating-current power supply, the switching wire device and the capacitor puncture test module are connected with the control terminal;
The measuring module comprises a high-voltage bridge and a voltage measuring device, and the voltage measuring device is connected with the tested capacitor;
One end of the switching wire device is connected with the high-voltage direct-current power supply, the high-voltage alternating-current power supply and the high-voltage bridge, and the other end of the switching wire device is connected with the tested capacitor;
the capacitor puncture test module is used for placing a tested capacitor and driving steel nails into the tested capacitor.
Further, the capacitor puncture test module comprises a test bed, wherein the test bed comprises a support frame and a pneumatic nailing gun;
The support frame comprises an upper support rod and a third bearing plate, and the top end of the upper support rod is fixedly connected with the third bearing plate.
Further, the capacitor puncture test module further comprises a PLC communication control module and an air pump, wherein the PLC communication control module is connected with the air pump, the pneumatic nail gun and the control terminal, and the pneumatic nail gun is further connected with the air pump.
Further, a through groove for the pneumatic nail gun to pass through is formed in the third bearing plate, second movable guide rails are fixed on the lower surface of the third bearing plate at two sides of the through groove, and second sliding blocks matched with the second movable guide rails are arranged on the pneumatic nail gun.
Further, the support frame also comprises a lower support rod, a second bearing plate and a first bearing plate;
the second bearing plate is fixed at the top of the lower supporting rod, and the first bearing plate is fixed at the middle part of the lower supporting rod.
Further, a grounding copper bar is arranged on the first bearing plate; an insulating plate is arranged on the upper surface of the third bearing plate.
Further, the left and right sides of the upper surface of the second bearing plate are respectively fixed with a first movable guide rail, a convex guide rail groove is formed in the first movable guide rail, and a first sliding block matched with the convex guide rail groove is fixedly arranged at the lower end of the upper supporting rod.
Further, the voltage measuring device is internally provided with a power electronic module for measuring direct current and alternating current voltages.
A second aspect of the present invention provides a control method of a fuse isolation test system in a power capacitor, comprising the steps of:
The system is started, and the air pump is put into operation;
the switching line device is controlled to cut into the high-voltage bridge, and the high-voltage bridge is controlled to perform initial capacitance measurement on the tested capacitor;
After the initial measurement of the capacitor is finished, the switching line device is controlled to cut into a high-voltage direct-current power supply, a first rated voltage is applied to the tested capacitor, meanwhile, the power electronic module arranged in the voltage measuring device is controlled to be switched to a direct-current gear, and the voltage of the tested capacitor is measured;
After the voltage measuring device displays stable voltage, controlling the nail gun to act, taking the air pump as an air source, driving steel nails into the tested capacitor by utilizing the pneumatic nail gun, and triggering the internal fuse to act;
The switching wire device is controlled to disconnect the high-voltage direct-current power supply, cut into the high-voltage bridge, and control the high-voltage bridge to retest the capacitance;
after the capacitance retests are finished, the switching line device is controlled to disconnect the high-voltage bridge and the high-voltage alternating current power supply.
Further, the method also comprises the following steps:
The switching line device is controlled to cut in a high-voltage direct-current power supply, a second rated voltage is applied to the tested product, meanwhile, a power electronic module arranged in the voltage measuring device is controlled to be switched to a direct-current gear, and the voltage of the tested capacitor is measured for the second time;
after the voltage measuring device displays stable voltage, controlling the nailing gun to act for the second time, taking the air pump as an air source, driving the steel nail into the tested capacitor by utilizing the pneumatic nailing gun, and triggering the internal fuse to act;
The switching wire device is controlled to disconnect the high-voltage direct-current power supply, cut into the high-voltage bridge and the high-voltage alternating-current power supply, and control the high-voltage bridge to conduct secondary retest on the capacitance;
And controlling the switching wire device to disconnect the high-voltage bridge, cut in the high-voltage alternating-current power supply, simultaneously controlling the power electronic module arranged in the voltage measuring device to switch to an alternating-current gear, applying a third rated voltage to the fuse wire fracture, and observing whether breakdown and flashover exist or not.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a fuse isolation test system in a power capacitor, which can realize the isolation test of fuses in the capacitor, automatically execute the test process, automatically measure, calculate and judge, and effectively reduce the mechanical injury and the electric shock risk of human bodies.
The invention provides a fuse isolation test system in a power capacitor, which realizes the movement of a pneumatic nail gun to any direction through a first movable guide rail and a second movable guide rail.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application.
FIG. 1 is a schematic diagram of the isolation test system of the present invention;
FIG. 2 is a front view of the test stand of the present invention;
FIG. 3 is a right side view of the test stand of the present invention;
FIG. 4 is a top view of the test stand of the present invention;
FIG. 5 is a top view of a third carrier plate according to the present invention;
FIG. 6 is a right side view of a third carrier plate according to the present invention;
FIG. 7 is a schematic view of a second slide and pneumatic nailer of the present invention;
FIG. 8 is a schematic view of a first movable rail of the present invention;
FIG. 9 is a schematic diagram of the control logic of the isolation test system of the present invention;
Wherein: 1. the pneumatic nail gun comprises a support frame, 2, a pneumatic nail gun, 3, a first bearing plate, 4, a second bearing plate, 5, a third bearing plate 6, an upper supporting rod, 7, a lower supporting rod, 8, a first movable guide rail, 9, a second movable guide rail, 10, an upper buckle, 11, a through groove, 12, a second slider, 13, a grounding copper bar, 14, a convex guide rail groove, 15, a first slider, 16 and an insulating plate.
The specific embodiment is as follows:
The invention will be further described with reference to the drawings and examples.
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
The embodiments of the present application and features of the embodiments may be combined with each other without conflict, and the present application will be further described with reference to the drawings and embodiments.
Example 1:
An object of this embodiment 1 is to provide a fuse isolation test system in a power capacitor.
The following embodiment is a typical implementation manner of the present application, and the fuse isolation test system in a power capacitor as shown in fig. 1, through remote control, effectively improves the operation normalization and safety of the fuse isolation test in the power capacitor, improves the test efficiency, and provides a valuable reference for the specific operation of the current test.
The fuse isolation test system in the power capacitor shown in fig. 1 comprises a control terminal, and a measurement module, a high-voltage direct-current power supply, a high-voltage alternating-current power supply, a switching wire device and a capacitor puncture test module which are connected with the control terminal.
The measuring module comprises a high-voltage bridge and a voltage measuring device and is used for measuring the voltage and the capacitance of the tested capacitor; the high-voltage bridge and the voltage measuring device are both connected with the control terminal, the voltage measuring device is also connected with the tested capacitor, the voltage measuring device collects and measures voltage signals by adopting the principle of a capacitive voltage divider, a power electronic module is arranged in the voltage measuring device, and the voltage measuring device is used for measuring direct current and alternating current voltages, and the measuring range is 0-150 kilovolts.
The high voltage dc power supply can stably supply a dc voltage of 0 to 150 kv, and the high voltage ac power supply can stably supply an ac voltage (including compensation reactance) of 0 to 100 kv.
One end of the switching wire device is connected with the high-voltage direct-current power supply, the high-voltage alternating-current power supply and the high-voltage bridge, and the other end of the switching wire device is used for being connected with a tested capacitor. And a step of visual test of the switching wire device, in which the switching wire is automatically switched by receiving an instruction of the control terminal, unnecessary equipment is disconnected, and the necessary equipment is connected without manually switching the equipment to the site. The switching wire device can realize automatic switching of two voltage sources, and the wire is not required to be manually detached through remote control.
The capacitor puncture test module comprises a test bed, a pneumatic device and a PLC communication control module; the test stand shown in fig. 2-4 comprises a support frame 1 and a pneumatic nailing gun 2; the support frame 1 comprises a first bearing plate 3, a second bearing plate 4, a third bearing plate 5, an upper support rod 6, a lower support rod 7, a first movable guide rail 8 and a second movable guide rail 9.
Preferably, the number of the upper support bars 6 and the lower support bars 7 is four.
The top end of the upper supporting rod 6 is fixedly connected with the third bearing plate 5, and specifically, the top end of the upper supporting rod 6 is connected with the third bearing plate 5 through an upper buckle 10 and a lower buckle 10. The width of the third carrier plate 5 is smaller than the width of the first carrier plate and the second carrier plate, for example, the length and the width of the first carrier plate and the second carrier plate are both 1 meter, the length of the third carrier plate is also 1 meter, but the width of the third carrier plate is 30 cm.
As shown in fig. 5, a through groove 11 for the pneumatic nail gun 2 to pass through is formed in the third bearing plate 5, the second movable guide rail 9 is fixed on the lower surface of the third bearing plate 5, and specifically, the second movable guide rail 9 is fixed on the lower surface of the third bearing plate 5 at both sides of the through groove 11. The second movable rail 9 is perpendicular to the direction of the first movable rail 8, and the second movable rail 9 is disposed along the length direction of the third loading plate 5. As shown in fig. 6, the second movable rail 9 is L-shaped in cross section. As shown in fig. 7, the pneumatic nail gun 2 is provided with a second sliding block 12 matched with the second movable guide rail 9, so that the pneumatic nail gun 2 can slide along the second movable guide rail 9.
The second bearing plate 4 is fixed at the top of the lower supporting rod 7, the first bearing plate 3 is fixed at the middle part of the lower supporting rod 7, the first bearing plate 3 is provided with a grounding copper bar 13, the grounding copper bar 13 is used as a ground electrode in the test process, one end of the capacitor is connected with a high-voltage end, and the other end of the capacitor is grounded; as shown in fig. 8, the left and right sides of the upper surface of the second bearing plate 4 are respectively fixed with a first movable guide rail 8, and the first movable guide rail 8 is provided with a convex guide rail groove 14; the lower end of the upper supporting rod 6 is fixedly provided with a first sliding block 15 matched with the convex guide rail groove 14; so that the upper support bar 6 can move along the first movable guide rail 8, thereby driving the third bearing plate 5 and the pneumatic nail gun 2 on the third bearing plate 5 to move.
The upper surface of the third loading plate 5 is provided with an insulating plate 16, and the upper surface of the specific third loading plate is provided with an insulating plate except for the position where the first movable guide rail is arranged.
The capacitor puncture test module realizes remote control puncture by utilizing a pneumatic device, the PLC communication control module is connected with the air pump, the pneumatic nail gun and the control terminal, and the pneumatic nail gun is also connected with the air pump. One end of the PLC communication control module is connected with the control terminal, the air pump is controlled by the PLC communication control module, the air pump is connected with the pneumatic nail gun, and the pneumatic nail gun is further connected with the PLC communication control module. The PLC communication control module receives data and instructions of the control terminal, judges whether the action condition is met, has overpressure locking, and controls the action of the pneumatic nailing gun. The air pump provides an air source for the capacitor puncture test module.
The control terminal is connected with the PLC communication control module, the high-voltage direct-current power supply, the high-voltage alternating-current power supply, the switching line device, the high-voltage bridge and the voltage measuring device, and matched test control software is configured in the control terminal to realize remote automatic operation of the whole device; the device comprises a remote control high-voltage direct-current power supply, a high-voltage alternating-current power supply, a switching wire device, a high-voltage bridge, a voltage measuring device and a capacitor puncture test module; the control terminal is used for calculating and displaying the measurement result. The control terminal can automatically control other devices except the control terminal, and comprises a measurement module, a high-voltage direct-current power supply, a high-voltage alternating-current power supply, a switching wire device and a capacitor puncture test module, and the measurement data is automatically calculated and compared, so that the device has overcurrent protection and scram functions.
As shown in fig. 9, the specific usage method is as follows:
Preprocessing the capacitor to be tested, and drilling 2 holes in the shell of the capacitor to be tested;
Placing the pretreated capacitor on an insulating plate of a capacitor puncture test module, placing and fixing steel nails, and moving the steel nails through a first movable guide rail and a second movable guide rail to align the steel nails with one hole of a steel nail shell;
the air pump is put into operation to provide an air source for the capacitor puncture test module, the tested capacitor is connected with the voltage measuring device of the measuring module and the switching wire device by using a high-voltage line, and all control loops in the air pump are connected. After wiring is completed, the control terminal controls the switching wire device to cut into the high-voltage bridge, controls the high-voltage bridge to perform initial capacitance measurement on the capacitor, and the system automatically acquires a measurement result;
The control terminal controls the switching wire device to cut in a high-voltage direct-current power supply, applies a first rated voltage, namely 1.27 times of rated voltage, to the tested capacitor, controls the power electronic module arranged in the voltage measuring device to switch to a direct-current gear for voltage measurement, and after the voltage measuring device displays stable voltage, the control terminal communicates with the PLC module of the capacitor puncture test module, and uses a matched air pump as an air source to control the nail gun to act, and the pneumatic nail gun is used for driving steel nails into the capacitor to trigger the action of an internal fuse;
The control terminal controls the switching line device to disconnect the high-voltage direct-current power supply, cuts in the high-voltage bridge and the high-voltage alternating-current power supply, controls the high-voltage bridge to retest the capacitance, automatically records retest values, and compares the retest values with initial measurement values;
the control terminal controls the switching wire device to disconnect the high-voltage bridge and the high-voltage alternating current power supply, aligns the steel nails to the 2 nd hole, cuts in the high-voltage direct current power supply, applies a second rated voltage, namely 3.11 times of the rated voltage, to the tested object, and repeatedly performs the steps of measuring the direct current voltage, actuating the pneumatic nail gun and re-measuring the capacitance.
The control terminal controls the switching wire device to disconnect the high-voltage bridge and cut in the high-voltage alternating current power supply, the control terminal controls the power electronic module arranged in the voltage measuring device to switch to the alternating current gear, and a third rated voltage, namely 2.15 times of the rated voltage, is applied to the fuse wire fracture for 10 seconds, so that whether breakdown and flashover exist or not is observed.
The system for testing the isolation of the fuse wire in the power capacitor strictly checks whether the tested capacitor meets the national standard, can realize the isolation test of the fuse wire in the capacitor, can automatically execute the test process through the operation control terminal, realizes the remote control of mechanical nailing to replace the manual nailing, and avoids the mechanical injury and the electric shock risk of human bodies.
Example 2:
An object of this embodiment 2 is to provide a control method of a fuse isolation test system in a power capacitor, including the following steps:
(1) The system is started, and the air pump is put into operation to provide an air source for the capacitor puncture test module; at this time, the user moves through the first movable guide rail and the second movable guide rail to align the steel nail with one of the holes of the steel nail shell;
(2) The switching line device is controlled to cut into the high-voltage bridge, and the high-voltage bridge is controlled to perform initial capacitance measurement on the tested capacitor, so that a measurement result is obtained;
(3) After the initial measurement of the capacitor is finished, the switching line device is controlled to cut into a high-voltage direct-current power supply, a first rated voltage, namely 1.27 times of rated voltage, is applied to the tested capacitor, and meanwhile, the power electronic module arranged in the voltage measuring device is controlled to be switched to a direct-current gear for voltage measurement, and the voltage of the tested capacitor is measured;
(4) After the voltage measuring device displays stable voltage, controlling the nailing gun to act, taking the matched air pump as an air source, driving steel nails into the tested capacitor by utilizing the pneumatic nailing gun, and triggering the internal fuse to act;
(5) The switching wire device is controlled to disconnect the high-voltage direct-current power supply, cut in the high-voltage bridge and the high-voltage alternating-current power supply, and control the high-voltage bridge to retest the capacitance of the tested capacitor, automatically record retest values and compare the retest values with initial test values; after the capacitance retests are finished, the switching line device is controlled to disconnect the high-voltage bridge and the high-voltage alternating current power supply; at the moment, the steel nails can be aligned with the other holes of the steel nail shell by moving the first movable guide rail and the second movable guide rail;
(6) The switching line device is controlled to cut in a high-voltage direct-current power supply, a second rated voltage which is 3.11 times of rated voltage is applied to the tested product, meanwhile, the power electronic module arranged in the voltage measuring device is controlled to be switched to a direct-current gear, and the voltage of the tested capacitor is measured for the second time;
(7) After the voltage measuring device displays stable voltage, controlling the nailing gun to act for the second time, taking the air pump as an air source, driving the steel nail into the tested capacitor by utilizing the pneumatic nailing gun, and triggering the internal fuse to act;
(8) The switching wire device is controlled to disconnect the high-voltage direct-current power supply, cut into the high-voltage bridge and the high-voltage alternating-current power supply, and control the high-voltage bridge to conduct secondary retest on the capacitance;
(9) And controlling the switching wire device to disconnect the high-voltage bridge, switching into a high-voltage alternating-current power supply, simultaneously controlling the power electronic module arranged in the voltage measuring device to switch to an alternating-current gear, applying a third rated voltage, namely 2.15 times of the rated voltage, to the fuse wire fracture for 10 seconds, and observing whether breakdown and flashover exist.
The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
While the foregoing description of the embodiments of the present invention has been presented in conjunction with the drawings, it should be understood that it is not intended to limit the scope of the invention, but rather, it is intended to cover all modifications or variations within the scope of the invention as defined by the claims of the present invention.
Claims (5)
1. A fuse isolation test system in a power capacitor is characterized in that: the device comprises a control terminal, a measurement module, a high-voltage direct-current power supply, a high-voltage alternating-current power supply, a switching wire device and a capacitor puncture test module, wherein the measurement module, the high-voltage direct-current power supply, the high-voltage alternating-current power supply, the switching wire device and the capacitor puncture test module are connected with the control terminal;
The measuring module comprises a high-voltage bridge and a voltage measuring device, and the voltage measuring device is connected with the tested capacitor;
One end of the switching wire device is connected with the high-voltage direct-current power supply, the high-voltage alternating-current power supply and the high-voltage bridge, and the other end of the switching wire device is connected with the tested capacitor;
The capacitor puncture test module comprises a test bed, wherein the test bed comprises a support frame and a pneumatic nail gun, and is used for placing a tested capacitor and driving steel nails into the tested capacitor; the support frame comprises an upper support rod and a third bearing plate, and the top end of the upper support rod is fixedly connected with the third bearing plate;
The third bearing plate is provided with a through groove for the pneumatic nailing gun to pass through, the lower surface of the third bearing plate is fixedly provided with second movable guide rails at two sides of the through groove, and the pneumatic nailing gun is provided with a second sliding block matched with the second movable guide rails;
The support frame also comprises a lower support rod, a second bearing plate and a first bearing plate;
the second bearing plate is fixed at the top of the lower supporting rod, and the first bearing plate is fixed at the middle part of the lower supporting rod;
the left side and the right side of the upper surface of the second bearing plate are respectively fixed with a first movable guide rail, a convex guide rail groove is formed in the first movable guide rail, and a first sliding block matched with the convex guide rail groove is fixedly arranged at the lower end of the upper supporting rod;
When the internal fuse isolation test system is controlled, the following steps are executed:
The system is started, and the air pump is put into operation;
the switching line device is controlled to cut into the high-voltage bridge, and the high-voltage bridge is controlled to perform initial capacitance measurement on the tested capacitor;
After the initial measurement of the capacitor is finished, the switching line device is controlled to cut into a high-voltage direct-current power supply, a first rated voltage is applied to the tested capacitor, meanwhile, the power electronic module arranged in the voltage measuring device is controlled to be switched to a direct-current gear, and the voltage of the tested capacitor is measured;
After the voltage measuring device displays stable voltage, controlling the nail gun to act, taking the air pump as an air source, driving steel nails into the tested capacitor by utilizing the pneumatic nail gun, and triggering the internal fuse to act;
the switching line device is controlled to disconnect the high-voltage direct-current power supply, cut in the high-voltage bridge and the high-voltage alternating-current power supply, and control the high-voltage bridge to retest the capacitance;
after the capacitance retests are finished, the switching line device is controlled to disconnect the high-voltage bridge and the high-voltage alternating current power supply.
2. A power capacitor internal fuse isolation test system as claimed in claim 1, wherein: the capacitor puncture test module further comprises a PLC communication control module and an air pump, wherein the PLC communication control module is connected with the air pump, the pneumatic nail gun and the control terminal, and the pneumatic nail gun is further connected with the air pump.
3. A power capacitor internal fuse isolation test system as claimed in claim 1, wherein: the first bearing plate is provided with a grounding copper bar; an insulating plate is arranged on the upper surface of the third bearing plate.
4. A power capacitor internal fuse isolation test system as claimed in claim 1, wherein: the voltage measuring device is internally provided with a power electronic module for measuring direct current and alternating current voltages.
5. The power capacitor internal fuse isolation test system of claim 1, further comprising the steps of, when controlling the internal fuse isolation test system:
The switching line device is controlled to cut in a high-voltage direct-current power supply, a second rated voltage is applied to the tested product, meanwhile, a power electronic module arranged in the voltage measuring device is controlled to be switched to a direct-current gear, and the voltage of the tested capacitor is measured for the second time;
after the voltage measuring device displays stable voltage, controlling the nailing gun to act for the second time, taking the air pump as an air source, driving the steel nail into the tested capacitor by utilizing the pneumatic nailing gun, and triggering the internal fuse to act;
The switching wire device is controlled to disconnect the high-voltage direct-current power supply, cut into the high-voltage bridge and the high-voltage alternating-current power supply, and control the high-voltage bridge to conduct secondary retest on the capacitance;
And controlling the switching wire device to disconnect the high-voltage bridge, cut in the high-voltage alternating-current power supply, simultaneously controlling the power electronic module arranged in the voltage measuring device to switch to an alternating-current gear, applying a third rated voltage to the fuse wire fracture, and observing whether breakdown and flashover exist or not.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111044526.6A CN113721099B (en) | 2021-09-07 | 2021-09-07 | Fuse isolation test system in power capacitor and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111044526.6A CN113721099B (en) | 2021-09-07 | 2021-09-07 | Fuse isolation test system in power capacitor and control method thereof |
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| Publication Number | Publication Date |
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| CN113721099A CN113721099A (en) | 2021-11-30 |
| CN113721099B true CN113721099B (en) | 2024-05-31 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020053386A (en) * | 2000-12-27 | 2002-07-05 | 이계안 | A method of current overload test |
| CN104253419A (en) * | 2014-09-11 | 2014-12-31 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Anti-disturbance tripping method for unbalance protection of high-voltage capacitor with inner fuse |
| CN206096226U (en) * | 2016-06-21 | 2017-04-12 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | HVDC direct current side direct current voltage detection circuit |
| CN206804788U (en) * | 2017-04-10 | 2017-12-26 | 国家电网公司 | A kind of high-voltage parallel capacitor Internal fuse isolation experiment mechanical penetration device |
| CN211278759U (en) * | 2019-12-23 | 2020-08-18 | 江西粤龙木业有限公司 | Perforating machine for plates |
| CN112345984A (en) * | 2020-11-04 | 2021-02-09 | 中国电力科学研究院有限公司 | Accurate positioning device for fuse isolation test puncture in capacitor and use method thereof |
| CN112433136A (en) * | 2020-11-04 | 2021-03-02 | 中国电力科学研究院有限公司 | Portable puncture device and method of use thereof |
-
2021
- 2021-09-07 CN CN202111044526.6A patent/CN113721099B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020053386A (en) * | 2000-12-27 | 2002-07-05 | 이계안 | A method of current overload test |
| CN104253419A (en) * | 2014-09-11 | 2014-12-31 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Anti-disturbance tripping method for unbalance protection of high-voltage capacitor with inner fuse |
| CN206096226U (en) * | 2016-06-21 | 2017-04-12 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | HVDC direct current side direct current voltage detection circuit |
| CN206804788U (en) * | 2017-04-10 | 2017-12-26 | 国家电网公司 | A kind of high-voltage parallel capacitor Internal fuse isolation experiment mechanical penetration device |
| CN211278759U (en) * | 2019-12-23 | 2020-08-18 | 江西粤龙木业有限公司 | Perforating machine for plates |
| CN112345984A (en) * | 2020-11-04 | 2021-02-09 | 中国电力科学研究院有限公司 | Accurate positioning device for fuse isolation test puncture in capacitor and use method thereof |
| CN112433136A (en) * | 2020-11-04 | 2021-03-02 | 中国电力科学研究院有限公司 | Portable puncture device and method of use thereof |
Non-Patent Citations (4)
| Title |
|---|
| 交流特高压工程用并联电容器内熔丝设计及性能测试研究;国江;倪学锋;陈江波;金涛;林浩;邓万婷;姜胜宝;黄林;;电测与仪表;20151010(第19期);96-111 * |
| 内部熔丝隔离试验方法探讨;房金兰;电力电容器;20060228(第1期);23-26 * |
| 特高压串补电容器内熔丝试验研究;蔡重凯;陈晓宇;金百荣;李电;洪金琪;李云飞;;电力电容器与无功补偿;20130430(02);28-33 * |
| 直流输电工程用电容器内熔丝的试验验证;刘兵;王鸿鹏;谷劲松;;电力电容器与无功补偿;20080215(第01期);37-53 * |
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