CN214895504U - Novel live-line detection device of lightning arrester online monitor - Google Patents
Novel live-line detection device of lightning arrester online monitor Download PDFInfo
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- CN214895504U CN214895504U CN202022794734.5U CN202022794734U CN214895504U CN 214895504 U CN214895504 U CN 214895504U CN 202022794734 U CN202022794734 U CN 202022794734U CN 214895504 U CN214895504 U CN 214895504U
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Abstract
The utility model discloses a live detection device of a novel lightning arrester on-line monitor, which comprises a current checking module; the current checking module comprises a high-precision ammeter, a damping inductor, an electrostatic voltmeter and a voltage regulator; the high-precision ammeter is electrically connected with the damping inductor, the damping inductor is electrically connected with the voltage regulator, and the static voltmeter is connected with the voltage regulator in parallel. A high-precision ammeter is connected in series in a current loop to be detected, the high-precision ammeter collects the current, the high-precision ammeter has high precision and stable performance, the collected data can be ensured to be accurate and stable, and the current value can be displayed in an electronic digital mode. Whether normal can detect the online monitor tally function of arrester, can detect the online monitor ammeter of arrester again and show that the alternating current leakage current virtual value is accurate, and the current value that detects can be accurate to microampere level, and the convenient maintenance personnel of patrolling is to causing the judgement that "the electric current has taken place abnormal change" to be verified.
Description
Technical Field
The utility model relates to an in electrical equipment testing instrument field, especially relate to a novel live detection of arrester on-line monitoring ware device.
Background
Whether the effective value of the alternating current leakage current displayed by the online arrester monitor changes abnormally or not is observed, and the method is one of important items for patrolling and maintaining personnel to carry out daily patrol on the arrester. If the effective value of the alternating current leakage current displayed by the lightning arrester online monitor suddenly becomes large, the change of the insulation state in the lightning arrester can be preliminarily suspected, and a more accurate test is needed, and the effective value of the alternating current leakage current displayed by the lightning arrester online monitor becomes small, which may be caused by the leakage of the lightning arrester base. Therefore, it is important to detect whether the effective value of the ac leakage current displayed by the lightning arrester on-line monitor is accurate. However, since the lightning arrester is designed to protect primary equipment connected in parallel, when a lightning wave invades a system, the lightning arrester operates first to discharge a lightning current to the ground. During the discharge of the arrester, a large current is generated through the arrester and the on-line monitor connected in series with the arrester.
Because the nominal discharge current of the lightning arrester is very large (reaching thousands of amperes), and the current range of the online monitor is very small (usually only 2-5 milliamperes), so in the process of discharging current, the phenomena of 'full bias', 'meter making' and the like can occur to the current display pointer of the online monitor, and very large mechanical impact is caused to the internal components of the online monitor. Along with the increase of the impact times, the precision of the online monitor is inevitably greatly reduced, the current displayed by the online monitor in the normal operation process is probably not a true value, and the current is easily judged by mistake that the current is abnormally changed for maintenance inspection personnel.
SUMMERY OF THE UTILITY MODEL
To the not enough of above-mentioned prior art, this patent has set up a novel arrester on-line monitoring ware's electrified detection device, establishes ties a high accuracy ampere meter in the current loop that needs detect, and the high accuracy ampere meter gathers the electric current size, and the high accuracy ampere meter has higher precision, and the stable performance can ensure that the data of gathering are accurate, stable to realize that the current value shows with electron digital mode. Whether normal can detect the online monitor tally function of arrester, can detect the online monitor ammeter of arrester again and show that the alternating current leakage current virtual value is accurate, and the current value that detects can be accurate to microampere level, and the convenient maintenance personnel of patrolling is to causing the judgement that "the electric current has taken place abnormal change" to be verified.
In order to achieve the above object, the present invention provides a live detection device of a novel lightning arrester on-line monitor, which comprises a current checking module;
the current checking module comprises a high-precision ammeter, a damping inductor, an electrostatic voltmeter and a voltage regulator; the high-precision ammeter is electrically connected with the damping inductor, the damping inductor is electrically connected with the voltage regulator, and the static voltmeter is connected with the voltage regulator in parallel.
As a preferred technical solution of the present invention, the live detection device of the novel lightning arrester on-line monitor further comprises an external ac circuit;
the external alternating current circuit comprises a silicon rectifier diode and a charging resistor; the charging resistor is connected with the silicon rectifier diode, and the silicon rectifier diode is connected with the electrostatic voltmeter.
As a preferred technical solution of the present invention, the live detection device of the novel lightning arrester on-line monitor further comprises a control switch device;
the control switch device comprises a switch controller, a charging control switch and a discharging control switch;
the charging control switch is arranged at the external alternating current circuit, and the discharging control switch is arranged at the current checking module;
the discharging control switch and the charging control switch are respectively connected with the high-precision ammeter in series, and the silicon rectifier diode, the charging resistor, the high-precision ammeter and the charging control switch form loop connection; the high-precision ammeter, the damping inductor, the electrostatic voltmeter and the discharge control switch form loop connection;
the input end and the output end of the discharge control switch are respectively connected with the switch controller;
the input end and the output end of the charging control switch are respectively connected with the switch controller.
As a preferred technical solution of the present invention, the live detection device of the novel lightning arrester on-line monitor further comprises a charging capacitor;
the charging capacitor is connected in parallel with the electrostatic voltmeter.
As a preferred technical solution of the present invention, the control switch device further includes a signal lamp and an operation display screen;
the signal lamp and the operation display screen are respectively connected with the switch controller.
As an optimized technical scheme of the utility model, the operation display screen is the LCD display screen.
As a preferred technical solution of the present invention, the live detection device of the novel lightning arrester on-line monitor further comprises a liquid crystal display screen;
and the liquid crystal display screen is respectively connected with the high-precision ammeter and the electrostatic voltmeter.
As an optimal technical scheme of the utility model, external alternating current circuit still includes the aviation plug, the aviation plug with charging resistor connects.
To sum up, because the utility model adopts the above technical scheme, the utility model discloses following technological effect has: a high-precision ammeter is connected in series in a current loop to be detected, the high-precision ammeter collects the current, the high-precision ammeter has high precision and stable performance, the collected data can be ensured to be accurate and stable, and the current value can be displayed in an electronic digital mode. Whether the counting function of the lightning arrester on-line monitor is normal or not can be detected, whether the effective value of the alternating current leakage current displayed by the ammeter of the lightning arrester on-line monitor is accurate or not can be detected, the detected current value can be accurate to microampere level, and the judgment that the current is abnormally changed can be verified by maintenance staff conveniently; through setting up external alternating current circuit and electric capacity, realize that the device power is built-in, the instrument also can normally work under the condition that has or not external power supply.
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, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic circuit connection diagram of the live line detection device of the novel lightning arrester on-line monitor of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
It will be understood that 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. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present.
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 in the description of the invention herein 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.
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.
Referring to fig. 1, fig. 1 shows a schematic circuit connection diagram of a live line detection device of a novel lightning arrester on-line monitor according to the present invention.
Specifically, the live detection device of the novel online arrester monitor shown in the embodiment of the utility model in the experiment comprises a current checking module 1; the current checking module 1 comprises a high-precision ammeter 11, a damping inductor 12, an electrostatic voltmeter 14 and a voltage regulator 13; the high-precision ammeter 11 is electrically connected with the damping inductor 12, the damping inductor 12 is electrically connected with the voltage regulator 13, and the electrostatic voltmeter 14 is connected in parallel with the voltage regulator 13. A high-precision ammeter 11 is connected in series in a current loop to be detected, the high-precision ammeter 11 collects the current, the high-precision ammeter 11 has high precision and stable performance, the collected data can be ensured to be accurate and stable, and the current value can be displayed in an electronic digital mode. Whether normal can detect the online monitor tally function of arrester, can detect the online monitor ammeter of arrester again and show that the alternating current leakage current virtual value is accurate, and the current value that detects can be accurate to microampere level, and the convenient maintenance personnel of patrolling is to causing the judgement that "the electric current has taken place abnormal change" to be verified.
Specifically, the live detection device of the novel lightning arrester online monitor further comprises an external alternating current circuit; the external alternating current circuit comprises a silicon rectifier diode 15 and a charging resistor 16; the charging resistor 16 is connected to the rectifying silicon diode 15, and the rectifying silicon diode 15 is connected to the electrostatic voltmeter 14. By arranging the silicon rectifier diode 15 and the charging resistor 16, when the device is connected to an external alternating current circuit, alternating current can be converted into direct current through the silicon rectifier diode 15 and the charging resistor 16, and then electric power support is provided for normal work of the device.
Specifically, the live detection device of the novel lightning arrester online monitor further comprises a control switch device 2; the control switch device 2 comprises a switch controller 21, a charging control switch 22 and a discharging control switch 23; the charging control switch 22 is arranged at the external alternating current circuit, and the discharging control switch 23 is arranged at the current checking module 1; the discharge control switch 23 and the charge control switch 22 are respectively connected in series with the high-precision ammeter 11, and the silicon rectifier diode 15, the charge resistor 16, the high-precision ammeter 11 and the charge control switch 22 form a loop connection; the high-precision ammeter 11, the damping inductor 12, the electrostatic voltmeter 14 and the discharge control switch 23 form a loop connection; the input end and the output end of the discharge control switch 23 are respectively connected with the switch controller 21; the input end and the output end of the charging control switch 22 are respectively connected with the switch controller 21.
Specifically, the live detection device of the novel lightning arrester online monitor further comprises a charging capacitor 17; the charging capacitor 17 is connected in parallel with the electrostatic voltmeter 14. The built-in power supply of the device is realized by arranging the charging capacitor 17, after the external power supply is connected into the device, the device is provided with electric power support, the charging capacitor 17 is charged, the electric power storage is realized, and when the external power supply does not have external alternating current, the stored electric energy is released by the charging capacitor 17 to provide the electric power support for the device. After the device is fully charged, the theoretical endurance time can reach 8 hours.
Specifically, the control switch device 2 further comprises a signal lamp 24 and an operation display screen 25; the signal lamp 24 and the operation display screen 25 are connected to the switch controller 21, respectively. By providing the signal lamp 24, the apparatus can intuitively exhibit the state in which the switch of the apparatus is opened.
Specifically, the operation display screen 25 is an LCD display screen.
Further, the operation display screen 25 is a 3.5-inch LCD display screen, and a user can conveniently and accurately operate and read information by using the 3.5-inch LCD display screen.
Specifically, the live detection device of the novel lightning arrester on-line monitor further comprises a liquid crystal display screen; the liquid crystal display screen is respectively connected with the high-precision ammeter 11 and the static voltmeter 14.
Furthermore, the specification of the liquid crystal display screen is 3 inches, and the specification can meet the use requirement, save the cost of the device and be beneficial to large-scale covering and use.
Specifically, the external ac circuit further includes an aviation plug, and the aviation plug is connected to the charging resistor 16. The aviation plug adopts 6-core aviation plug, the 6-core aviation plug is also stronger in strength, and no wiring application is needed in the using process.
The utility model discloses, a high accuracy ampere meter of establishing ties in the current loop that needs detected, high accuracy ampere meter acquisition current size, high accuracy ampere meter have higher precision, and the stable performance can ensure that the data of gathering are accurate, stable to realize that the current value shows with electron digital mode. Whether the counting function of the lightning arrester on-line monitor is normal or not can be detected, whether the effective value of the alternating current leakage current displayed by the ammeter of the lightning arrester on-line monitor is accurate or not can be detected, the detected current value can be accurate to microampere level, and the judgment that the current is abnormally changed can be verified by maintenance staff conveniently; through setting up external alternating current circuit and electric capacity, realize that the device power is built-in, the instrument also can normally work under the condition that has or not external power supply.
The above detailed description is made on the live detection device of the novel online arrester monitor provided by the embodiment of the present invention, and the principle and the implementation mode of the present invention shall be explained by using a specific example, and the description of the above embodiment is only used to help understanding the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, and in summary, the content of the present specification should not be understood as the limitation of the present invention.
Claims (8)
1. The live detection device of the novel lightning arrester online monitor is characterized by comprising a current checking module;
the current checking module comprises a high-precision ammeter, a damping inductor, an electrostatic voltmeter and a voltage regulator; the high-precision ammeter is electrically connected with the damping inductor, the damping inductor is electrically connected with the voltage regulator, and the static voltmeter is connected with the voltage regulator in parallel.
2. The live detection device of the novel online arrester monitor according to claim 1, wherein the live detection device further comprises an external ac circuit;
the external alternating current circuit comprises a silicon rectifier diode and a charging resistor; the charging resistor is connected with the silicon rectifier diode, and the silicon rectifier diode is connected with the electrostatic voltmeter.
3. The live detection device of the novel on-line arrester monitor as claimed in claim 2, wherein the live detection device further comprises a control switch device;
the control switch device comprises a switch controller, a charging control switch and a discharging control switch;
the charging control switch is arranged at the external alternating current circuit, and the discharging control switch is arranged at the current checking module;
the discharging control switch and the charging control switch are respectively connected with the high-precision ammeter in series, and the silicon rectifier diode, the charging resistor, the high-precision ammeter and the charging control switch form loop connection; the high-precision ammeter, the damping inductor, the electrostatic voltmeter and the discharge control switch form loop connection;
the input end and the output end of the discharge control switch are respectively connected with the switch controller;
the input end and the output end of the charging control switch are respectively connected with the switch controller.
4. The live detection device of the novel on-line arrester monitor as claimed in claim 2, wherein the live detection device further comprises a charging capacitor;
the charging capacitor is connected in parallel with the electrostatic voltmeter.
5. The live detection device of the novel on-line arrester monitor as claimed in claim 3, wherein the control switch device further comprises a signal lamp and an operation display screen;
the signal lamp and the operation display screen are respectively connected with the switch controller.
6. The live detection device of the novel lightning arrester online monitor according to claim 5, characterized in that the operation display screen is an LCD display screen.
7. The live detection device of the novel online arrester monitor as claimed in claim 2, wherein the live detection device further comprises a liquid crystal display screen;
and the liquid crystal display screen is respectively connected with the high-precision ammeter and the electrostatic voltmeter.
8. The live detection device of the novel online arrester monitor according to claim 2, wherein the external ac circuit further comprises an aviation plug, and the aviation plug is connected with the charging resistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022794734.5U CN214895504U (en) | 2020-11-27 | 2020-11-27 | Novel live-line detection device of lightning arrester online monitor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022794734.5U CN214895504U (en) | 2020-11-27 | 2020-11-27 | Novel live-line detection device of lightning arrester online monitor |
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| CN214895504U true CN214895504U (en) | 2021-11-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116068262A (en) * | 2023-02-10 | 2023-05-05 | 国网江苏省电力有限公司如东县供电分公司 | Online monitoring method for resistive current of zinc oxide arrester of overhead transmission line |
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2020
- 2020-11-27 CN CN202022794734.5U patent/CN214895504U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116068262A (en) * | 2023-02-10 | 2023-05-05 | 国网江苏省电力有限公司如东县供电分公司 | Online monitoring method for resistive current of zinc oxide arrester of overhead transmission line |
| CN116068262B (en) * | 2023-02-10 | 2023-12-29 | 国网江苏省电力有限公司如东县供电分公司 | Online monitoring method for resistive current of zinc oxide arrester of overhead transmission line |
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