CN111257602B - Arrester testing device and arrester testing system - Google Patents
Arrester testing device and arrester testing system Download PDFInfo
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- CN111257602B CN111257602B CN202010206780.0A CN202010206780A CN111257602B CN 111257602 B CN111257602 B CN 111257602B CN 202010206780 A CN202010206780 A CN 202010206780A CN 111257602 B CN111257602 B CN 111257602B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
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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 lightning protection test device and a lightning protection test system.A detector can detect an intruder when a tester or a non-tester mistakenly enters a lightning arrester test area in the test process, generates a current signal to warning equipment, triggers the warning equipment to operate, and warns the tester or the non-tester so as to avoid danger in time; when the arrester completed test operation or the arrester did not begin, the unable induced voltage of induced voltage device for the detector is disconnected or keeps disconnected with external power source, promptly, and the detector is in the stop work state, so, effectively avoids the detector excessive work and reduces life. Therefore, the lightning arrester testing device automatically carries out early warning on the mistake entry of personnel in the testing process, automatically stops the operation of the detector in the non-testing process, realizes intelligent protection, and greatly improves the safety in the lightning arrester testing process.
Description
Technical Field
The invention relates to the technical field of electrical tests, in particular to a lightning arrester test device and a lightning arrester test system.
Background
The lightning arrester is one of main devices of an electric power system, can effectively limit the overvoltage amplitude of a power grid, ensures that power transformation equipment is prevented from being damaged by overvoltage, and ensures the safe and stable operation of the system, and is also called as an overvoltage protector. The overvoltage protection circuit is suitable for overvoltage protection of transformers, transmission lines, distribution panels, switch cabinets, power metering boxes, vacuum switches, parallel compensation capacitors, rotating motors, semiconductor devices and the like.
In electrical testing of electrical distribution equipment, leakage current testing of lightning arresters is a very important item. At present, the types of developed test platforms are various aiming at the current test of the lightning arrester, but most of the test platforms pay attention to the convenience in the test process, and the dangerousness and the safety problem in the high-voltage test are not considered. Therefore, in the test process, the tester can easily enter the high-voltage test area by mistake, and the personal safety of the tester is seriously endangered.
Disclosure of Invention
Therefore, the lightning arrester testing device and the lightning arrester testing system are needed to be provided, so that the situation that a tester mistakenly enters a testing area is effectively prevented, and the safety of the lightning arrester in the testing process is improved.
The technical scheme is as follows:
an arrester testing apparatus comprising: the test stand is used for mounting the lightning arrester; the induction voltage device is arranged on the test rack and used for inducing the voltage of the lightning arrester in the test; the electronic control switch is electrically connected with the induced voltage device, and can trigger the electronic control switch to be closed when the induced voltage device induces voltage; the detector is used for being electrically connected with an external power supply through the electric control switch, the detector is used for being electrically connected with the warning equipment, and the detector is used for triggering the warning equipment to run after being used for detecting a moving object.
In the lightning arrester testing device, the lightning arrester is arranged on the testing frame to be fixed; and applying a test voltage to the lightning arrester to enable the lightning arrester to perform a leakage current test. When the arrester is tested, the voltage on the arrester can be induced by the induced voltage device, the electric control switch is controlled to be closed, the detector is communicated with an external power supply, and the detector is in a working state. If in the test process, when a tester or a non-tester mistakenly enters the lightning arrester test area, the detector can detect the person who enters the lightning arrester test area, and generates a current signal to the warning equipment, the warning equipment is triggered to operate, and the tester or the non-tester is warned, so that the tester or the non-tester can avoid risks in time, and thus, the personal safety of the personnel is greatly guaranteed; when the arrester completed test operation or the arrester did not begin, the unable induced voltage of induced voltage device, at this moment, electric control switch was in the disconnection or kept the off-state for the detector and external power source disconnection or keep the disconnection, promptly, the detector is in the stop work state, so, effectively avoid the detector excessive work and reduce life. Therefore, the lightning arrester testing device automatically carries out early warning on the error entry of personnel in the testing process, automatically stops the operation of the detector in the non-testing process, realizes intelligent protection and greatly improves the safety in the lightning arrester testing process.
The principle and effect of the invention will be further explained by combining the above scheme:
in one embodiment, the test stand comprises a support member, and a test stand and a bearing platform which are arranged along the height direction of the support member at intervals, wherein the test stand is used for installing the lightning arrester, and the induced voltage device is arranged on the bearing platform.
In one embodiment, the bearing table is located below the test table, and the bearing table is an insulating plate.
In one embodiment, the test stand is provided with a mounting hole for inserting an end of the lightning arrester.
In one embodiment, the number of the mounting holes is more than two, and the more than two mounting holes are arranged on the test bed at intervals.
In one embodiment, the test bed is marked with more than two identification parts, the identification parts and the mounting holes are arranged in a one-to-one correspondence mode, and the identification parts are used for distinguishing the more than two mounting holes.
In one embodiment, a conductive plate is laid on the test bed, a grounding terminal is arranged on the conductive plate, and the conductive plate is used for being in conductive contact with one end of the lightning arrester.
In one embodiment, the test rack further comprises a roller, and the roller is arranged on the support.
In one embodiment, the electronic control switch is a relay, the detector is a microwave radar probe, the microwave radar probe comprises a positive input end, a negative input end, a positive output end and a negative output end, the positive input end and the negative input end are connected with the relay, and the positive output end and the negative output end are both used for being connected with the warning device.
The lightning protection test system comprises a lightning arrester, a warning device and the lightning protection test device, wherein the lightning arrester is arranged on a test frame, and the warning device is electrically connected with the detector.
The lightning arrester test system adopts the lightning arrester test device, and the lightning arrester is arranged on the test frame to be fixed; and applying a test voltage to the lightning arrester to enable the lightning arrester to perform a leakage current test. When the arrester is tested, the voltage on the arrester can be induced by the induced voltage device, the electric control switch is controlled to be closed, the detector is communicated with an external power supply, and the detector is in a working state. If in the test process, when a tester or a non-tester mistakenly enters the lightning arrester test area, the detector can detect the person who enters the lightning arrester test area, and generates a current signal to the warning equipment, the warning equipment is triggered to operate, and the tester or the non-tester is warned, so that the tester or the non-tester can avoid risks in time, and thus, the personal safety of the personnel is greatly guaranteed; when the arrester completed test operation or the arrester did not begin, the unable induced voltage of induced voltage device, at this moment, electric control switch was in the disconnection or kept the off-state for the detector and external power source disconnection or keep the disconnection, promptly, the detector is in the stop work state, so, effectively avoid the detector excessive work and reduce life. Therefore, the lightning arrester testing device automatically carries out early warning on the error entry of personnel in the testing process, automatically stops the operation of the detector in the non-testing process, realizes intelligent protection and greatly improves the safety in the lightning arrester testing process.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention.
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an arrester testing apparatus according to an embodiment of the invention;
fig. 2 is a circuit diagram of a connection between an induced voltage device and an electric control switch according to an embodiment of the invention;
fig. 3 is a schematic structural diagram of a detector according to an embodiment of the present invention.
Description of the reference numerals:
100. lightning arrester testing device, 110, test stand, 111, test stand, 1111, mounting hole, 1112, identification part, 1113, conducting plate, 1114, grounding end, 112, plummer, 113, support piece, 120, induced voltage device, 121, NOT gate logic chip, 122, MOS pipe, 123, DC-DC voltage reduction module, 124, light emitting diode, 125, carbon film resistance, 130, detector, 131, positive input end, 132, negative input end, 133, positive output end, 134, negative output end, 140, electronic control switch, 150, gyro wheel, 151, locking piece.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and the detailed description. It should be understood that the detailed description and specific examples, while indicating the scope of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a single embodiment.
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 invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The terms "first" and "second" used herein do not denote any particular order or quantity, but rather are used to distinguish one element from another.
In one embodiment, referring to fig. 1 and fig. 2, an arrester testing apparatus 100 includes: test stand 110, induced voltage device 120, electronic control switch 140 and detector 130. The test stand 110 is used to mount a lightning arrester. The induced voltage device 120 is installed on the test stand 110, and the induced voltage device 120 is used to induce the voltage of the arrester under test. The electrically controlled switch 140 is electrically connected to the induced voltage device 120. When the voltage sensing device 120 senses a voltage, the electronically controlled switch 140 can be triggered to close. The detector 130 is electrically connected to an external power source through the electronic control switch 140, the detector 130 is electrically connected to the warning device, and the detector 130 is configured to trigger the warning device to operate after detecting a moving object.
In the lightning arrester testing device 100, the lightning arrester is mounted on the testing frame 110 and fixed; and applying a test voltage to the lightning arrester to enable the lightning arrester to perform a leakage current test. When the lightning arrester is tested, the induced voltage device 120 induces the voltage on the lightning arrester, and controls the electronic control switch 140 to be closed, so that the detector 130 is communicated with an external power supply, and the detector 130 is in a working state. If in the test process, when a tester or a non-tester mistakenly enters the lightning arrester test area, the detector 130 detects the person who enters, generates a current signal to the warning equipment, triggers the warning equipment to operate, and warns the tester or the non-tester, so that the tester or the non-tester can avoid danger in time, and thus, the personal safety of the tester is greatly guaranteed; when the lightning arrester finishes the test operation or the lightning arrester does not start, the induced voltage device 120 cannot induce voltage, and at the moment, the electronic control switch 140 is in a disconnected state or keeps a disconnected state, so that the detector 130 is disconnected or keeps disconnected from an external power supply, that is, the detector 130 is in a stop working state, and thus, the reduction of the service life caused by the excessive work of the detector 130 is effectively avoided. Therefore, the lightning arrester testing device 100 automatically carries out early warning on the mistake entry of personnel in the testing process, automatically stops the operation of the detector 130 in the non-testing process, realizes intelligent protection, and greatly improves the safety in the lightning arrester testing process.
It should be noted that the leakage current of the lightning arrester refers to the current passing through the zinc oxide resistor disc, and is also called the leakage current of the zinc oxide lightning arrester. Under normal rated power frequency voltage, the lightning arrester can be regarded as an insulator, and the test index is determined to be that the leakage current is not more than 50 mu A under 0.75U1mA in consideration of the voltage fluctuation range, and meanwhile, the smaller the leakage current is, the better the leakage current is. The leakage current can reflect the insulation condition of the lightning arrester, and is an important means for judging the quality of the lightning arrester under the operating voltage. In the test process, after the arrester was fixed at test stand 110, connect the high-voltage line on the top of arrester, power cord live wire promptly for exert certain power frequency voltage value on the arrester. Wherein 0.75U1mA represents a leakage current at 0.75 times the DC reference voltage of 1 mA.
It should be further noted that the induced voltage device 120 includes a 74HC04PW not-gate logic chip 121 with a working voltage of 5V, and the working voltage 5V of the not-gate logic chip 121 is provided by a 12V dry battery after being reduced by the DC-DC voltage reduction module 123; meanwhile, the induced voltage device 120 further includes an N-channel enhancement type MOS (Metal Oxide Semiconductor field effect transistor), a light emitting diode 124, and a 1/8W type carbon film resistor 125.
Specifically, referring to fig. 2, the led 124 and the electronic control switch 140 are connected in parallel to the GND and the 1Y pin of the not logic chip 121. When the gate antenna of the MOS 122 has no induced voltage, the drain-source of the MOS 122 is cut off, the 5V power supply is connected to the input pin of the nand gate logic chip 1211A through the resistor, the high level signal is input at 1A, and the low level signal is output at 1Y after passing through the not gate logic chip 121, thereby completing one not gate conversion. At this time, the electric control switch 140 and the light emitting diode 124 do not work; when the gate antenna of the MOS 122 senses a voltage, the drain-source of the MOS 122 is conducted, and the D-pole is connected to the GND, so that the input end of the 1A is changed from a high level to a low level, and then the output of the 1Y is changed from a low level to a high level after passing through the nor logic chip 121, and the light emitting diode 124 and the electronic control switch 140 reach a working voltage at the same time to start to blink and pull in. The MOS transistor 122 has three electrodes, namely a gate, a source, and a drain, where the gate is denoted by G, the source is denoted by S, and the drain is denoted by D.
Optionally, the warning device of this embodiment is a buzzer, an indicator light, a vibrating device, or the like. The indicator light can be a light emitting diode or a fluorescent lamp.
Further, referring to fig. 1, the test rack 110 includes a support 113, and a test bed 111 and a carrying bed 112 spaced apart from each other along a height direction of the support 113. The test stand 111 is used for mounting a lightning arrester. The induced voltage device 120 is mounted on the carrier 112. Therefore, in the test process, the lightning arrester is stably installed through the test bed 111, and the lightning arrester can be tested better. Meanwhile, the induced voltage device 120 is also stably installed through the bearing platform 112, and the induced voltage device 120 is ensured to accurately induce the test voltage on the lightning arrester.
Optionally, the test bed 111 is mounted on the support 113 by bolting, pinning, clamping, welding, etc. Similarly, the mounting manner of the platform 112 on the support 113 may be bolting, pinning, clipping, welding, etc.
Specifically, referring to fig. 1, the number of the supporting members 113 is four, the test bed 111 is connected to the ends of the four supporting members 113, and the bearing table 112 is connected to the four supporting members 113. Meanwhile, the detector 130 is mounted on the supporting stage 112.
Furthermore, referring to fig. 1, the susceptor 112 is located below the test stage 111, and the susceptor 112 is an insulating plate. Therefore, the bearing table 112 is arranged below the test bed 111 in the embodiment, so that the instrument on the bearing table 112 keeps a distance from the high-voltage lead end of the arrester, and thus, on the premise that the induced voltage device 120 can induce the voltage on the arrester, the stable and safe operation of each instrument is greatly ensured. Meanwhile, in the embodiment, the bearing platform 112 is designed to be an insulating plate, so that mutual insulation among all instruments is ensured, and mutual short circuit among the instruments is avoided.
Alternatively, the material of the carrier 112 is wood, plastic or inorganic glass, wherein the plastic may be PP (polypropylene), PVC (polyvinyl chloride), PC (Polycarbonate), etc.
In one embodiment, referring to fig. 1, the test bed 111 is provided with a mounting hole 1111. The mounting hole 1111 is for inserting an end of the arrester. So, in the test process, insert the mounting hole 1111 with the one end of arrester for the arrester is stable erects on test bench 111, thereby makes the one end of arrester conveniently apply test voltage. Meanwhile, the lightning arrester is greatly convenient to install, and the test efficiency of the lightning arrester is improved.
Alternatively, the mounting holes 1111 may be threaded holes; or a common round hole. When the mounting hole 1111 is a threaded hole, one end of the lightning arrester is screwed into the threaded hole, so that the lightning arrester is stably mounted on the test bed 111; when the mounting hole 1111 is a common round hole, that is, a non-threaded hole, the common round hole is in interference fit with one end of the arrester, and similarly, the arrester is stably mounted on the test bed 111.
Further, referring to fig. 1, the number of the mounting holes 1111 is two or more. More than two mounting holes 1111 are arranged on the test stand 111 at intervals. So, set up two above mounting holes 1111 on test bench 111 for can install two above arresters simultaneously on test bench 111, and can carry out the leakage current test to two above arresters simultaneously, improve the test efficiency of arrester greatly.
Specifically, referring to fig. 1, the number of the mounting holes 1111 is three, and the three mounting holes 1111 are disposed on the test bed 111 at intervals.
Further, referring to fig. 1, the test bed 111 is marked with more than two markers 1112. The mark 1112 is provided in one-to-one correspondence with the mounting hole 1111. The mark 1112 is used to distinguish two or more mounting holes 1111 from each other. Therefore, when the test bed 111 is provided with more than two mounting holes 1111, different mounting holes 1111 need to be labeled, and confusion caused by simultaneous tests of a plurality of lightning arresters is avoided. Meanwhile, the indication part 1112 can also indicate the voltage phase sequence of different lightning arresters, so that the situation that the lightning arresters forget the installation phase sequence among the lightning arresters after the test is finished is avoided.
Alternatively, the identification part 1112 of the present embodiment may be marked with different letters; it may also be marked with different numbers; alternatively, the label classification may also be performed with different colors.
Specifically, referring to fig. 1, there are three mounting holes 1111 and three identification portions 1112, the three identification portions 1112 are a, B, and C, and three letters a, B, and C respectively correspond to the three mounting holes 1111, and the letter a is sprayed with yellow paint, the letter B is sprayed with green paint, and the letter a is sprayed with red paint.
In one embodiment, referring to fig. 1, a conductive plate 1113 is laid on the test bed 111, a ground terminal 1114 is provided on the conductive plate 1113, and the conductive plate 1113 is used for electrically contacting with one end of the lightning arrester. Thus, the conductive plate 1113 is laid on the test bed 111, so that one ends of the plurality of lightning arresters installed on the test bed 111 are mutually conducted; next, set up earthing terminal 1114 on test bench 111 for a plurality of arresters pass through conducting plate 1113 unified and earthing terminal 1114 electric connection, thereby realize the unified ground connection operation of a plurality of arresters, avoid testing personnel to carry out ground connection operation to the arrester one by one, improved the test efficiency of arrester greatly.
Alternatively, the material of the conductive plate 1113 may be an aluminum plate, a copper plate, an iron plate, a steel plate, or the like.
Specifically, referring to fig. 1, the grounding terminal 1114 is a grounding bolt fixed on the conductive plate 1113, and the grounding bolt is used for connecting with the ground. The installation manner of the grounding bolt on the test bed 111 may be threaded connection or welding. Meanwhile, the mounting hole 1111 penetrates the conductive plate 1113 and is opened in the test stand 111.
In one embodiment, referring to fig. 1, the test frame 110 further includes a roller 150. The roller 150 is mounted on the support 113. Thus, the handling of the arrester testing device 100 is facilitated by the rollers 150.
Further, referring to fig. 1, a locking member 151 is disposed on the roller 150, and the roller 150 is locked by the locking member 151, so as to effectively prevent the lightning arrester testing apparatus 100 from sliding during the testing process and affecting the reliability of the testing result.
In one embodiment, referring to fig. 1 and 3, the electrically controlled switch 140 is a relay. Detector 130 is a microwave radar probe. The microwave radar probe includes a positive input 131, a negative input 132, a positive output 133, and a negative output 134. The positive input terminal 131 and the negative input terminal 132 are both connected to the relay. The positive output end 133 and the negative output end 134 are both used for being connected with a warning device. Therefore, when the voltage sensing device 120 senses a voltage, the voltage sensing device 120 triggers the relay to operate, so that the relay is closed; after the suction, the microwave radar probe and an external power supply form a loop, so that the microwave radar probe starts to work. When a tester or a non-tester mistakenly enters the test area, the microwave radar probe senses the test area and outputs a corresponding direct-current power supply to the warning equipment, so that the warning equipment starts to operate.
A relay is an electric control device that generates a predetermined step change in a controlled amount in an electric output circuit when a change in an input amount (excitation amount) meets a predetermined requirement.
It should be further noted that, the microwave Radar probe is a detector for a microwave moving object designed by using Doppler Radar (Doppler Radar) principle, and the specific working principle is as follows: when a radio wave hits an object during traveling, the wave is reflected, and the frequency of the reflected wave changes according to the moving state of the hit object. If the location of the object struck by the radio wave is fixed, then the frequency of the reflected wave and the frequency of the transmitted wave should be equal. If the object moves in the direction of the emission, the reflected waves will be compressed, that is, the frequency of the reflected waves will increase; and conversely, the frequency of the reflected wave is reduced. The microwave radar probe mainly comprises an FET medium DRO microwave oscillation source (10.525 GHz), a power divider, a transmitting antenna, a receiving antenna, a mixer, a detector and the like. Meanwhile, the power supply of the microwave radar of the present embodiment may be provided by a 12V dry cell battery.
Specifically, referring to fig. 2, the induced voltage device 120 includes a not gate logic chip 121, a DC-DC voltage reduction module 123, a MOS transistor 122 and a light emitting diode 124, wherein the light emitting diode 124 and the relay are connected in parallel to each other, and the GND pin and the 1Y pin of the nand gate logic chip 121 are both connected.
In an embodiment, please refer to fig. 1 and fig. 2, a lightning protection testing system includes a lightning arrester (not shown), a warning device (not shown), and the lightning protection testing apparatus in any one of the above embodiments. The lightning arrester is mounted on the test stand 110. The warning device is electrically connected to the detector 130.
The lightning arrester test system adopts the lightning arrester test device 100, and the lightning arrester is arranged on the test rack 110 to be fixed; and applying a test voltage to the lightning arrester to enable the lightning arrester to perform a leakage current test. When the lightning arrester is tested, the induced voltage device 120 induces the voltage on the lightning arrester, and controls the electronic control switch 140 to be closed, so that the detector 130 is communicated with an external power supply, and the detector 130 is in a working state. If in the test process, when a tester or a non-tester mistakenly enters the lightning arrester test area, the detector 130 detects the person who enters, generates a current signal to the warning equipment, triggers the warning equipment to operate, and warns the tester or the non-tester, so that the tester or the non-tester can avoid danger in time, and thus, the personal safety of the personnel is greatly guaranteed; when the lightning arrester finishes the test operation or the lightning arrester does not start, the induced voltage device 120 cannot induce voltage, and at the moment, the electronic control switch 140 is in a disconnected state or keeps a disconnected state, so that the detector 130 is disconnected or keeps disconnected from an external power supply, that is, the detector 130 is in a stop working state, and thus, the reduction of the service life caused by the excessive work of the detector 130 is effectively avoided. Therefore, the lightning arrester testing device 100 automatically carries out early warning on the mistaken entry of personnel in the testing process, automatically stops the operation of the detector 130 in the non-testing process, realizes intelligent protection, and greatly improves the safety in the lightning arrester testing process. Wherein, the warning equipment is a buzzer.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is specific and detailed, but not to be understood as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. An arrester testing device, comprising:
the test stand is used for mounting the lightning arrester;
the induced voltage device is arranged on the test rack and used for inducing the voltage of the lightning arrester in the test; the induction voltage device comprises a NOT gate logic chip, a DC-DC voltage reduction module, an MOS (metal oxide semiconductor) tube, a light emitting diode and a carbon film resistor, wherein the working voltage of the NOT gate logic chip is provided by a dry battery after being reduced by the DC-DC voltage reduction module, and the MOS tube is electrically connected between the NOT gate logic chip and the dry battery;
the electric control switch is connected with the light-emitting diode in parallel and then connected onto the NOT gate logic chip, when the MOS tube does not sense voltage, the drain electrode-source electrode of the MOS tube is cut off, a power supply of the dry battery after being reduced by the DC-DC voltage reduction module is connected with the input pin of the NOT gate logic chip through the carbon film resistor, and the electric control switch and the light-emitting diode cannot work; when the MOS tube induces voltage, the drain electrode-source electrode of the MOS tube is conducted, the light-emitting diode flickers, and the electric control switch is closed; and
the detector is used for being electrically connected with an external power supply through the electric control switch, the detector is used for being electrically connected with the warning equipment, and the detector is used for triggering the warning equipment to run after being used for detecting a moving object.
2. The arrester testing device according to claim 1, wherein the testing frame comprises a supporting member, and a testing platform and a bearing platform which are arranged at intervals along the height direction of the supporting member, the testing platform is used for mounting the arrester, and the induced voltage device is mounted on the bearing platform.
3. A lightning arrester testing device according to claim 2, characterized in that the carrying platform is located below the testing platform and the carrying platform is an insulating plate.
4. The arrester testing apparatus according to claim 2, wherein the test stand is provided with a mounting hole for inserting an end portion of the arrester.
5. The arrester testing apparatus according to claim 4, wherein the number of the mounting holes is two or more, and the two or more mounting holes are provided at intervals on the test stand.
6. The lightning arrester testing device according to claim 4, wherein the test stand is marked with two or more identification portions, the identification portions are arranged in one-to-one correspondence with the mounting holes, and the identification portions are used for distinguishing the two or more mounting holes.
7. An arrester testing device according to claim 2, characterized in that a conductive plate is laid on the test stand, and a ground terminal is provided on the conductive plate, and the conductive plate is used for electrically contacting with one end of the arrester.
8. The surge arrester testing apparatus according to any one of claims 2 to 7, wherein the test stand further comprises a roller, the roller being mounted on the support member.
9. An arrester testing device according to any one of claims 1-7, characterized in that the electrical control switch is a relay, the detector is a microwave radar probe, the microwave radar probe comprises a positive input terminal, a negative input terminal, a positive output terminal and a negative output terminal, the positive input terminal and the negative input terminal are both connected with the relay, and the positive output terminal and the negative output terminal are both used for being connected with the warning device.
10. An arrester test system, characterized in that, includes arrester, warning equipment and claim 1-9 any one the arrester test device, the arrester is installed on the test stand, warning equipment with detector electric connection.
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| CN201638349U (en) * | 2009-12-14 | 2010-11-17 | 河南索凌电气有限公司 | Human body induction alarm device of high-voltage isolation area |
| CN103116964B (en) * | 2013-01-21 | 2015-04-29 | 河南理工大学 | Mining aerial cableway anti-sleep reminding device and control method thereof |
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| CN204596051U (en) * | 2015-04-30 | 2015-08-26 | 国家电网公司 | Intelligent and safe cover bar |
| CN106934986A (en) * | 2015-12-29 | 2017-07-07 | 吴文革 | A kind of high-tension switch cabinet area outlook device |
| CN206133861U (en) * | 2016-08-30 | 2017-04-26 | 国网吉林省电力有限公司电力科学研究院 | Be applied to withstand voltage unit infrared induction alarm device of flexible automation verification system |
| CN205982348U (en) * | 2016-09-14 | 2017-02-22 | 国家电网公司 | High voltage test power source controlling means |
| CN208239498U (en) * | 2018-06-25 | 2018-12-14 | 国网冀北电力有限公司唐山供电公司 | A kind of 10-220kV high-tension cable test auxiliary security attention device |
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2020
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