CN113589094A - High-voltage testing system and high-voltage testing method - Google Patents
High-voltage testing system and high-voltage testing method Download PDFInfo
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- CN113589094A CN113589094A CN202110866679.2A CN202110866679A CN113589094A CN 113589094 A CN113589094 A CN 113589094A CN 202110866679 A CN202110866679 A CN 202110866679A CN 113589094 A CN113589094 A CN 113589094A
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- 229910001018 Cast iron Inorganic materials 0.000 claims description 3
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- 238000010998 test method Methods 0.000 abstract description 2
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- 238000004519 manufacturing process Methods 0.000 description 3
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- 238000013522 software testing Methods 0.000 description 3
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
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- 238000001514 detection method Methods 0.000 description 1
- 230000009545 invasion 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
- G01R31/01—Subjecting similar articles in turn to test, e.g. "go/no-go" tests in mass production; Testing objects at points as they pass through a testing station
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Abstract
The invention discloses a high-voltage test system and a high-voltage test method, wherein the system comprises: the high-voltage testing device comprises a testing base, two insulating support columns, a plurality of cylinders and a high-voltage cross arm, wherein the two insulating support columns are respectively arranged at two ends of the testing base; the control device is connected with the high-voltage cross arm and the cylinders, and controls the cylinders to be sequentially contacted with the corresponding lightning arresters to be tested, so that the lightning arresters to be tested are tested. By implementing the invention, the probability and risk of personal safety accidents caused by electric shock due to failure and non-discharge of a tester are reduced; meanwhile, only the air cylinder needs to be controlled to be in contact with the air cylinder during testing, testing time is short, operation is simple, and testing efficiency and testing capacity are greatly improved.
Description
Technical Field
The invention relates to the technical field of lightning arrester detection, in particular to a high-voltage testing system and a high-voltage testing method.
Background
The zinc oxide arrester is the most excellent overvoltage protection electric appliance recognized at present. Since its birth, it has been widely used in the fields of electric power, railway, mine, building, petroleum, communication, chemical industry, steel and the like, provides protection for damage caused by overvoltage invasion of electrical equipment, and is very popular with users. Before the lightning arresters leave a factory, all the lightning arresters need to be subjected to factory tests (routine tests), namely, high-voltage electrical performance tests are carried out on the product.
However, the existing lightning arrester testing device needs to test the lightning arresters one by one, so that each product test needs to perform manual wire replacement and grounding discharge, and when repeated tests are performed on a large number of products, the probability and risk of personal safety accidents caused by electric shock due to errors and non-discharge of testers are increased; when a plurality of products are tested, the voltage is raised, lowered, grounded, the test article is replaced and the wire is connected repeatedly, so that the operation is complex, the testing time is long, the testing efficiency is low and the testing cost is high.
Disclosure of Invention
In view of this, embodiments of the present invention provide a high voltage testing system and a high voltage testing method, so as to solve the technical problems in the prior art that a single lightning arrester has a high safety risk and a low testing efficiency when tested.
The technical scheme provided by the embodiment of the invention is as follows:
a first aspect of an embodiment of the present invention provides a high voltage test system, including: the high-voltage testing device comprises a testing base, two insulating support columns, a plurality of cylinders and a high-voltage cross arm, wherein the two insulating support columns are respectively arranged at two ends of the testing base, the high-voltage cross arm is arranged on the two insulating support columns in a lap mode, a plurality of lightning arresters to be tested are placed between the two insulating support columns on the testing base, the cylinders are arranged on the high-voltage cross arm corresponding to the lightning arresters to be tested, and the cylinders are electrically connected with the high-voltage cross arm; the control device is connected with the high-voltage cross arm and the cylinders, and controls the cylinders to be sequentially contacted with the corresponding lightning arresters to be tested so as to test the lightning arresters to be tested.
Optionally, the control device comprises: the direct-current high-voltage generation control device is connected with the high-voltage cross arm and used for providing voltage required by testing of the lightning arrester to be tested and controlling the lightning arrester to be tested to complete electrical testing; and the cylinder opening and closing control device is connected with the cylinders and is used for controlling the cylinders to be sequentially contacted with the corresponding lightning arresters to be tested to form a passage.
Optionally, the test base comprises: the low-voltage grounding cross arm and the plurality of supporting bases arranged on the low-voltage cross arm are provided with a plurality of lightning arresters to be tested.
Optionally, the high voltage testing system further comprises: and the air filter is arranged between the cylinder opening and closing control device and the plurality of cylinders.
Optionally, the high voltage testing system further comprises: resistance divider, direct current high pressure emergence controlling means includes direct current high voltage generator, exchanges the experimental transformer of direct current, exchanges experimental voltage regulator of alternating current, direct current high voltage generator's one end is connected resistance divider's one end and high-pressure cross arm, resistance divider's the other end is connected test base reaches exchange-direct current experimental transformer, exchange experimental voltage regulator connection exchange-direct current experimental transformer.
Optionally, the high voltage testing system further comprises: and one end of the grounding rod is connected with the alternating current-direct current test transformer through a grounding wire.
Optionally, the cylinder is any one of an aluminum alloy cylinder, a stainless steel cylinder and a cast iron cylinder; the lightning arrester testing device is characterized in that a piston is arranged in the cylinder, when the cylinder is not in contact with a lightning arrester to be tested, an air gap is formed between the cylinder and the lightning arrester, and when the lightning arrester to be tested is tested, the piston is controlled by the control device to be in contact with the lightning arrester to be tested.
Optionally, the number of the lightning arresters to be tested placed between the two insulating pillars on the test base is greater than or equal to ten, and the rated voltage of the lightning arresters to be tested is greater than or equal to 51 kV.
A second aspect of the embodiments of the present invention provides a high voltage testing method, which is applied to the high voltage testing system according to any one of the first aspect and the first aspect of the embodiments of the present invention, and the method includes: placing the lightning arrester to be tested on a test base; a first control button in the control device is switched on, and the first cylinder is controlled to move to be in contact with a corresponding lightning arrester to form a passage; the control device is adopted to boost and reduce the voltage of the lightning arrester to be tested, and electrical test is carried out; controlling the first control button to be disconnected and controlling the second control button to be switched on to complete the electrical test on the second lightning arrester to be tested; and sequentially controlling the disconnection and closing operations of the control button until the test of all the lightning arresters to be tested on the test base is completed.
Optionally, when the control device is connected with a ground rod, the test method further comprises: removing the ground rod before switching on the first control button; and after the testing of all the lightning arresters to be tested on the base to be tested is finished, cutting off the power supply of the control device, short-circuiting the high-voltage end of the control device by using the grounding rod, and replacing another batch of lightning arresters to be tested to continue testing.
The technical scheme of the invention has the following advantages:
the high-voltage testing system provided by the embodiment of the invention comprises a control device and a high-voltage testing device, wherein the high-voltage testing device is provided with a testing base, two insulating support columns, a plurality of cylinders and a high-voltage cross arm, the testing base can be provided with a plurality of lightning arresters to be tested, and the cylinders electrically connected with the high-voltage cross arm are sequentially contacted with the lightning arresters to be tested to form a passage, so that the lightning arresters to be tested are tested. Therefore, the high-voltage testing system provided by the embodiment of the invention can realize the testing of a plurality of lightning arresters to be tested, and reduces the probability and risk of personal safety accidents caused by electric shock due to errors and no discharge of testers; meanwhile, when each lightning arrester to be tested is tested, only the cylinder needs to be controlled to be in contact with the lightning arrester to be tested, the testing time is short, the operation is simple, the testing efficiency and the testing capacity are greatly improved, and the testing cost is reduced.
According to the high-voltage testing system provided by the embodiment of the invention, the high-voltage cross arm is fixed by the two insulating support columns to serve as a high-voltage end, the opening and closing of the switch are pneumatically controlled by fixing the air cylinder on the high-voltage cross arm, and meanwhile, the high-voltage and control part is isolated in an insulating way by air with pressure, and the air has high insulating strength, is easy to realize and has strong operability. Therefore, by adopting the high-voltage testing system, a tester can realize high-voltage switching on and switching off by operating the control device in the control room, and different cylinders are switched to perform tests. Meanwhile, the lightning arrester to be tested does not need to be disconnected after the test voltage is reduced to 0 value every time, the lightning arrester can be directly disconnected when the voltage is reduced to 75% of the highest voltage of the previous lightning arrester, and then the corresponding cylinder of the next lightning arrester to be tested is closed to connect the high-voltage end, so that the electrical test of the second lightning arrester to be tested can be continuously carried out.
Therefore, the high-voltage testing system provided by the embodiment of the invention reduces the probability and risk of personal safety accidents caused by electric shock due to failure and non-discharge of testing personnel, and the failure probability is reduced by 90% compared with the conventional testing mode. Need not every product ground connection, change examination article, wiring, easy operation, test time is short, and efficiency of software testing is high. In addition, through experiments, the operation of the high-voltage test system reaches an expected target, the test efficiency is improved by more than 4 times, the test cost is greatly reduced, and the test productivity is further improved.
The high-voltage testing method provided by the embodiment of the invention adopts a high-voltage testing system consisting of a control device and a high-voltage testing device, and meanwhile, the high-voltage testing device is provided with a testing base, two insulating support columns, a plurality of cylinders and a high-voltage cross arm, the testing base can be provided with a plurality of lightning arresters to be tested, and the cylinders electrically connected with the high-voltage cross arm are sequentially contacted with the lightning arresters to be tested to form a passage, so that the testing of the lightning arresters to be tested is completed. Therefore, the high-voltage testing system provided by the embodiment of the invention can realize the testing of a plurality of lightning arresters to be tested, and reduces the probability and risk of personal safety accidents caused by electric shock due to errors and no discharge of testers; meanwhile, when each lightning arrester to be tested is tested, only the cylinder needs to be controlled to be in contact with the lightning arrester to be tested, the testing time is short, the operation is simple, the testing efficiency and the testing capacity are greatly improved, and the testing cost is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a block diagram of a high voltage test system according to an embodiment of the present invention;
FIG. 2 is a block diagram of a high voltage testing system according to another embodiment of the present invention;
FIG. 3 is a block diagram of a high voltage test system according to another embodiment of the present invention;
FIG. 4 is a flowchart of a high voltage testing method according to an embodiment of the present invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. 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 invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; the two elements may be directly connected or indirectly connected through an intermediate medium, or may be communicated with each other inside the two elements, or may be wirelessly connected or wired connected. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
An embodiment of the present invention provides a high voltage testing system, as shown in fig. 1, the high voltage testing system includes: the high-voltage testing device 20 comprises a testing base 21, two insulating support columns 22, a plurality of cylinders 23 and a high-voltage cross arm 24, wherein the two insulating support columns 22 are respectively arranged at two ends of the testing base 21, the high-voltage cross arm 24 is erected on the two insulating support columns 22, a plurality of lightning arresters 25 to be tested are placed in the middle of the two insulating support columns 22 on the testing base 21, the plurality of cylinders 23 are arranged on the high-voltage cross arm 24 corresponding to the plurality of lightning arresters 25 to be tested, and the plurality of cylinders 23 are electrically connected with the high-voltage cross arm 24; the control device 10 is connected with the high-voltage cross arm 24 and the plurality of cylinders 23, and the control device 10 controls the plurality of cylinders 23 to be sequentially contacted with the corresponding lightning arresters 25 to be tested so as to test the lightning arresters 25 to be tested.
The high-voltage testing system provided by the embodiment of the invention comprises a control device and a high-voltage testing device, wherein the high-voltage testing device is provided with a testing base, two insulating support columns, a plurality of cylinders and a high-voltage cross arm, the testing base can be provided with a plurality of lightning arresters to be tested, and the cylinders electrically connected with the high-voltage cross arm are sequentially contacted with the lightning arresters to be tested to form a passage, so that the lightning arresters to be tested are tested. Therefore, the high-voltage testing system provided by the embodiment of the invention can realize the testing of a plurality of lightning arresters to be tested, and reduces the probability and risk of personal safety accidents caused by electric shock due to errors and no discharge of testers; meanwhile, when each lightning arrester to be tested is tested, only the cylinder needs to be controlled to be in contact with the lightning arrester to be tested, the testing time is short, the operation is simple, the testing efficiency and the testing capacity are greatly improved, and the testing cost is reduced.
In one embodiment, as shown in fig. 2, the test base 21 includes: the lightning arrester device comprises a low-voltage grounding cross arm 201 and a plurality of supporting bases 202 arranged on the low-voltage grounding cross arm 201, wherein a plurality of lightning arresters 25 to be tested are arranged on the supporting bases 202. Specifically, the number of the support bases 202 may be set to at least ten, and for example, ten bases, fifteen bases, or twenty bases may be set. If it is less to set up base quantity, then still need frequently to change the arrester that awaits measuring, can't improve efficiency of software testing by a wide margin. Meanwhile, the high-voltage test system can test the lightning arrester with rated voltage more than or equal to 51 kV. And the insulating support columns arranged at the two ends of the test base can realize the insulation between the high-voltage cross arm and the ground.
Thus, the insulating support may be a composite outer jacket support, which may be replaced with a porcelain outer jacket support. But cannot be replaced by an insulating rod without a shed, otherwise a flashover along the surface can occur, resulting in a short circuit trip. In addition, the cylinder can be any one of an aluminum alloy cylinder, a stainless steel cylinder and a cast iron cylinder; the high-pressure cross arm can be made of common carbon steel plates or can be replaced by aluminum alloy.
As an optional implementation manner of the embodiment of the present invention, as shown in fig. 3, the control device 10 includes a cylinder switching-on and switching-off control device 11, and the cylinder switching-on and switching-off control device 11 is connected to the plurality of cylinders 23 and is configured to control the plurality of cylinders 23 to sequentially contact with the corresponding lightning arresters 25 to be tested, so as to form a passage 26. Specifically, a piston is provided in the cylinder 23, and when the cylinder and the arrester are not in contact, there is an air gap 27 between the cylinder and the arrester, and when the arrester is tested, the control device controls the piston to move and the arrester to be in contact. In particular, when the arrester is not tested, an air gap exists between the cylinder or the high-voltage cross arm and the arrester, which air gap can assume a high voltage without being broken down.
Specifically, as shown in fig. 3, a plurality of control buttons 101 each controlling one cylinder are provided on the cylinder switching control device 11. For example, after the lightning arrester to be tested is placed on the test base, the first control button can be controlled to be switched on, so that the first cylinder is controlled to be in contact with the corresponding lightning arrester to form a passage, and the lightning arrester is tested. Meanwhile, when the first control button is switched on, other control buttons can be controlled not to be switched on, and the switching-on and switching-off control device can be set specifically in the air cylinder. Only when the first control button is disconnected, can the switching-on operation be carried out to any one of other control buttons. Namely, the high-voltage test system can not test 2 or more lightning arresters to be tested simultaneously, so that errors in test results are prevented.
In one embodiment, the high voltage testing system further comprises: and an air filter 12, wherein the air filter 12 is arranged between the cylinder opening and closing control device 11 and the plurality of cylinders 23. Specifically, the air filter 12 is composed of a conventional oil-water separator and a drying and regenerating device, has a large influence on the insulation of the high-voltage end cylinder, and cannot be replaced by a common filter, otherwise, a high-voltage short-circuit risk is generated. Wherein, the air filter 12 is connected with each cylinder through an air inlet pipe and an air outlet pipe, and the air inlet pipe and the air outlet pipe adopt a common PVC air pipe.
Specifically, since the cylinder is electrically connected to the high-voltage cross arm, and the cylinder is connected to the cylinder opening/closing control device through the air filter, an operator needs to touch the cylinder opening/closing control device to perform an opening/closing operation, and thus, electrical isolation between the cylinder and the cylinder opening/closing control device needs to be achieved. And the air cleaner who sets up can filter and dry the air in the trachea, and from this, the air after the drying can realize electrical isolation, avoids causing serious electric shock incident to operating personnel.
As an optional implementation manner of the embodiment of the present invention, the control device further includes: and the direct-current high-voltage generation control device is connected with the high-voltage cross arm and used for providing voltage required by the lightning arrester test and controlling the lightning arrester to complete the electrical test.
In one embodiment, as shown in fig. 3, the high voltage testing system further comprises: the resistance voltage divider 13 and the direct-current high-voltage generation control device comprise a direct-current high-voltage generator 14, an alternating-current-direct-current test transformer 15 and an alternating-current test voltage regulator 16, wherein one end of the direct-current high-voltage generator 14 is connected with one end of the resistance voltage divider 13 and a high-voltage cross arm 24, the other end of the resistance voltage divider 13 is connected with a test base 21 and the alternating-current-direct-current test transformer 15, and the alternating-current test voltage regulator 16 is connected with the alternating-current-direct-current test transformer 15. One end of the dc high voltage generator 14 is connected to one end of the resistor divider 13 and the high voltage cross arm 24 through a high voltage test wire, and the other end of the resistor divider 13 is connected to the test base 21 and the ac-dc test transformer 15 through a low voltage test wire.
The device is provided with a direct-current high-voltage generator, an alternating-current-direct-current test transformer and an alternating-current test voltage regulator, can provide high voltage for the lightning arrester, and can perform direct-current 1mA reference voltage test and leakage current test under 0.75 times of direct-current 1mA reference voltage for the lightning arrester to be tested through voltage adjustment.
In one embodiment, the high voltage testing system further comprises: and one end of the grounding rod 17 is connected with the alternating current-direct current test transformer 15 through a grounding wire. Specifically, the grounding wire can be red copper grounding wire with cross-sectional area not less than 6mm2. In addition, by arranging the grounding rod, the grounding rod can be taken down before testing, and after the testing is completed, the grounding rod can be used for short-circuiting the high-voltage end of the direct-current high-voltage generation control device and the high-voltage end of the lightning arrester to be tested, so that residual charges in the high-voltage end are discharged.
According to the high-voltage testing system provided by the embodiment of the invention, the high-voltage cross arm is fixed by the two insulating support columns to serve as a high-voltage end, the opening and closing of the switch are pneumatically controlled by fixing the air cylinder on the high-voltage cross arm, and meanwhile, the high-voltage and control part is isolated in an insulating way by air with pressure, and the air has high insulating strength, is easy to realize and has strong operability. Therefore, by adopting the high-voltage testing system, a tester can realize high-voltage switching on and switching off by operating the control device in the control room, and different cylinders are switched to perform tests. Meanwhile, the lightning arrester to be tested does not need to be disconnected after the test voltage is reduced to 0 value every time, the lightning arrester can be directly disconnected when the voltage is reduced to 75% of the highest voltage of the previous lightning arrester, and then the corresponding cylinder of the next lightning arrester to be tested is closed to connect the high-voltage end, so that the electrical test of the second lightning arrester to be tested can be continuously carried out.
Therefore, the high-voltage testing system provided by the embodiment of the invention reduces the probability and risk of personal safety accidents caused by electric shock due to failure and non-discharge of testing personnel, and the failure probability is reduced by 90% compared with the conventional testing mode. Need not every product ground connection, change examination article, wiring, easy operation, test time is short, and efficiency of software testing is high. In addition, through experiments, the operation of the high-voltage test system reaches an expected target, the test efficiency is improved by more than 4 times, the test cost is greatly reduced, and the test productivity is further improved.
An embodiment of the present invention further provides a high voltage testing method, as shown in fig. 4, which is applied to the high voltage testing system according to any one of the above embodiments, and the method includes the following steps:
step S101: placing the lightning arrester to be tested on a test base; specifically, after the device in the high-voltage test system is connected, the connection state of the loop can be checked first, and when there is no problem, the lightning arrester to be tested is placed on the test base. The number of the lightning arresters to be tested can be ten, and the number of the cylinders arranged on the high-voltage cross arm can also be ten.
Step S102: a first control button in the control device is switched on, and the first cylinder is controlled to move to be in contact with a corresponding lightning arrester to form a passage; specifically, before the control button is switched on, the ground rod connected to the high-voltage end of the dc high-voltage generation control device may be removed. And then a first control button in the cylinder opening and closing control device is switched on to control the piston in the first cylinder to move and contact with the corresponding lightning arrester to form a passage.
Step S103: and (4) boosting and reducing the voltage of the lightning arrester to be tested by adopting a control device, and carrying out electrical test. Specifically, after a path is formed, the direct-current high-voltage generation control device can be controlled to boost the voltage to perform an electrical test on the lightning arrester, and corresponding voltage and current data are read and recorded; and then controlling the direct current high voltage generation control device to reduce the voltage to 0.75 direct current 1mA test voltage value and recording.
Step S104: controlling the first control button to open and the second control button to close, and completing the electrical test on the second lightning arrester to be tested; specifically, after the first lightning arrester to be tested is tested, a first control button in the cylinder switching-on and switching-off control device can be controlled to be switched off, so that the first cylinder moves upwards to be separated from the lightning arrester, and a circuit is broken. And then controlling a second control button in the cylinder opening and closing control device to be switched on, enabling a second cylinder to move downwards to contact with the corresponding lightning arrester to form a passage, and then repeating the test process in the step S103 to finish the test of the second lightning arrester to be tested.
Step S105: and sequentially controlling the switching-off and switching-on operations of the control button until the test of all the lightning arresters to be tested on the test base is completed. Specifically, the switching-on and switching-off operations of other control buttons in the cylinder switching-on and switching-off control device can be sequentially performed until the test of ten lightning arresters is completed. After the test of ten lightning arresters is completed, the voltage of the direct-current high-voltage generation control device can be reduced to zero, then the power supply is cut off, and the high-voltage end of the direct-current high-voltage generation control device and the high-voltage end of the lightning arrester to be tested are in short circuit connection through the grounding rod, so that residual charges in the high-voltage end are discharged. Thereafter, another ten arresters may be replaced, and a cycle test may be performed.
The high-voltage testing method provided by the embodiment of the invention adopts a high-voltage testing system consisting of a control device and a high-voltage testing device, and meanwhile, the high-voltage testing device is provided with a testing base, two insulating support columns, a plurality of cylinders and a high-voltage cross arm, the testing base can be provided with a plurality of lightning arresters to be tested, and the cylinders electrically connected with the high-voltage cross arm are sequentially contacted with the lightning arresters to be tested to form a passage, so that the testing of the lightning arresters to be tested is completed. Therefore, the high-voltage testing system provided by the embodiment of the invention can realize the testing of a plurality of lightning arresters to be tested, and reduces the probability and risk of personal safety accidents caused by electric shock due to errors and no discharge of testers; meanwhile, when each lightning arrester to be tested is tested, only the cylinder needs to be controlled to be in contact with the lightning arrester to be tested, the testing time is short, the operation is simple, the testing efficiency and the testing capacity are greatly improved, and the testing cost is reduced.
In one embodiment, the high voltage testing method can implement the test according to the following procedures: checking the complete state of a loop of the testing device; sequentially placing 10 lightning arresters to be tested on a test base; taking down a grounding rod connected with the direct-current high-voltage generation control device; operating a first control button of the cylinder opening and closing control device to enable a first cylinder to move downwards to contact a high-voltage end of the lightning arrester to form a passage; the lightning arrester is subjected to electrical test by controlling the direct-current high-voltage generation control device to boost voltage, and corresponding voltage and current data are read and recorded; then the voltage is reduced to 0.75 DC 1mA test voltage value, and then the first cylinder is operated to move upwards to be separated from the high-voltage end of the lightning arrester, so that an open circuit is formed. Then operating a second button of the cylinder opening and closing control device to enable a second cylinder to move downwards to contact a high-voltage end of the lightning arrester to form a channel, and repeating the steps until ten lightning arresters are tested in sequence; after ten lightning arresters are tested, reducing the voltage to 0, separating a brake to cut off a test power supply, and then using a grounding rod to short-circuit the high-voltage end of the direct-current high-voltage generation control device and the high-voltage end of the lightning arrester to be tested to discharge residual charges; and then replacing the test article to finish the test of a batch of lightning arresters (10). And carrying out the above operation on the next batch of products to form a test cycle.
Although the present invention has been described in detail with respect to the exemplary embodiments and the advantages thereof, those skilled in the art will appreciate that various changes, substitutions and alterations can be made to the embodiments without departing from the spirit and scope of the invention as defined by the appended claims. For other examples, one of ordinary skill in the art will readily appreciate that the order of the process steps may be varied while maintaining the scope of the present invention.
Moreover, the scope of the present application is not intended to be limited to the particular embodiments of the process, machine, manufacture, composition of matter, means, methods and steps described in the specification. As one of ordinary skill in the art will readily appreciate from the disclosure of the present invention, processes, machines, manufacture, compositions of matter, means, methods, or steps, presently existing or later to be developed, that perform substantially the same function or achieve substantially the same result as the corresponding embodiments described herein may be utilized according to the present invention. Accordingly, the appended claims are intended to include within their scope such processes, machines, manufacture, compositions of matter, means, methods, or steps.
Claims (10)
1. A high voltage testing system, comprising: a control device and a high-voltage testing device,
the high-voltage testing device comprises a testing base, two insulating support columns, a plurality of cylinders and a high-voltage cross arm, wherein the two insulating support columns are respectively arranged at two ends of the testing base, the high-voltage cross arm is arranged on the two insulating support columns in a lap joint mode, a plurality of to-be-tested lightning arresters are arranged between the two insulating support columns on the testing base, the cylinders are arranged on the high-voltage cross arm corresponding to the to-be-tested lightning arresters, and the cylinders are electrically connected with the high-voltage cross arm;
the control device is connected with the high-voltage cross arm and the cylinders, and controls the cylinders to be sequentially contacted with the corresponding lightning arresters to be tested so as to test the lightning arresters to be tested.
2. The high voltage testing system of claim 1, wherein said control means comprises: a direct-current high-voltage generation control device and a cylinder opening and closing control device,
the direct-current high-voltage generation control device is connected with the high-voltage cross arm and is used for providing voltage required by testing of the lightning arrester to be tested and controlling the lightning arrester to be tested to complete electrical testing;
and the cylinder opening and closing control device is connected with the cylinders and is used for controlling the cylinders to be sequentially contacted with the corresponding lightning arresters to be tested to form a passage.
3. The high voltage testing system of claim 2, wherein said test base comprises: the low-voltage grounding cross arm and the plurality of supporting bases arranged on the low-voltage cross arm are provided with a plurality of lightning arresters to be tested.
4. The high voltage testing system of claim 2, further comprising: and the air filter is arranged between the cylinder opening and closing control device and the plurality of cylinders.
5. The high voltage testing system of claim 3, further comprising: a resistance divider, the DC high voltage generation control device comprises a DC high voltage generator, an AC-DC test transformer and an AC test voltage regulator,
one end of the direct-current high-voltage generator is connected with one end of the resistor voltage divider and the high-voltage cross arm, the other end of the resistor voltage divider is connected with the test base and the alternating-current-direct-current test transformer, and the alternating-current test voltage regulator is connected with the alternating-current-direct-current test transformer.
6. The high voltage testing system of claim 5, further comprising: and one end of the grounding rod is connected with the alternating current-direct current test transformer through a grounding wire.
7. The high pressure testing system of claim 1, wherein the cylinder is any one of an aluminum alloy cylinder, a stainless steel cylinder, and a cast iron cylinder; the lightning arrester testing device is characterized in that a piston is arranged in the cylinder, when the cylinder is not in contact with a lightning arrester to be tested, an air gap is formed between the cylinder and the lightning arrester to be tested, and when the lightning arrester to be tested is tested, the piston is controlled by the control device to be in contact with the lightning arrester to be tested.
8. The high voltage test system according to claim 1, wherein the number of the lightning arresters to be tested placed on the test base in the middle of the two insulating columns is ten or more, and the rated voltage of the lightning arresters to be tested is 51kV or more.
9. A high voltage testing method applied to the high voltage testing system according to any one of claims 1 to 8, the method comprising:
placing the lightning arrester to be tested on a test base;
a first control button in the control device is switched on, and the first cylinder is controlled to move to be in contact with a corresponding lightning arrester to form a passage;
the control device is adopted to boost and reduce the voltage of the lightning arrester to be tested, and electrical test is carried out;
controlling the first control button to be disconnected and controlling the second control button to be switched on to complete the electrical test on the second lightning arrester to be tested;
and sequentially controlling the disconnection and closing operations of the control button until the test of all the lightning arresters to be tested on the test base is completed.
10. The method of claim 9, wherein when the control device is connected to a ground bar, the method further comprises:
removing the ground rod before switching on the first control button;
and after the testing of all the lightning arresters to be tested on the base to be tested is finished, cutting off the power supply of the control device, short-circuiting the high-voltage end of the control device by using the grounding rod, and replacing another batch of lightning arresters to be tested to continue testing.
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