CN110018375A - High-voltage arrester monitoring device and method - Google Patents
High-voltage arrester monitoring device and method Download PDFInfo
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- CN110018375A CN110018375A CN201910356149.6A CN201910356149A CN110018375A CN 110018375 A CN110018375 A CN 110018375A CN 201910356149 A CN201910356149 A CN 201910356149A CN 110018375 A CN110018375 A CN 110018375A
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- voltage arrester
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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 present invention relates to a kind of high-voltage arrester monitoring device and methods, wherein high-voltage arrester monitoring device includes: processor, current transformer, current detection module；In current transformer one end series connection access high-voltage arrester, the other end and the current detection module are electrically connected；The processor and the current detection module are electrically connected；The processor is suitable for receiving the total current and lightning current of the current detection module detection.High-voltage arrester has tens microamperes Dao several hundred microamperes of a leakage current when without lightning stroke between 50KV and ground, by detecting its leakage current, by judge leakage current it is normal whether high-voltage arrester is monitored.
Description
Technical field
The present invention relates to arresters to monitor field, and in particular to a kind of high-voltage arrester on-line measuring device and method.
Background technique
High-voltage arrester is breath of life in people's life, plays guidance electric current when generating lightning stroke, prevents thunder
The effect hit, the quality of high-voltage arrester performance dominate the life security of people.
Therefore, high-voltage arrester is when in use, it is ensured that it does not damage most important.
It is urgently to be resolved at present for how monitoring the quality of high-voltage arrester.
Summary of the invention
The object of the present invention is to provide a kind of high-voltage arrester monitoring device and methods.
In order to solve the above-mentioned technical problems, the present invention provides a kind of high-voltage arrester monitoring devices, comprising:
Processor, current transformer, current detection module；
In current transformer one end series connection access high-voltage arrester, the other end and the current detection module are electrically connected；
The processor and the current detection module are electrically connected；
The processor is suitable for receiving the total current and lightning current of the current detection module detection.
Further, the current detection module includes Acquisition Circuit, wake-up circuit and amplifying circuit；
The Acquisition Circuit is electrically connected with the wake-up circuit and the amplifying circuit respectively；
The processor is electrically connected with the wake-up circuit and the amplifying circuit respectively；
The Acquisition Circuit is suitable for acquisition total current and is transferred to the processor after being sent to the amplifying circuit；
The Acquisition Circuit is further adapted for detecting that sending lightning current by the wake-up circuit when lightning current detects signal to described
Processor；
The processor is suitable for carrying out lightning current acquisition by the Acquisition Circuit when receiving lightning current detection signal.
Further, the Acquisition Circuit includes rectification chip, divider resistance R2, divider resistance R14；
First output end of the current transformer passes sequentially through the resistance R10 and Transient Suppression Diode after inductance L2, parallel connection
D6 and second output terminal are electrically connected.
The input terminal of the rectification chip is electrically connected in the both ends of resistance R10, and is suitable for current transformer is defeated
The AC rectification entered is direct current；
The positive output end of the rectification chip passes through acquisition resistance R4, divider resistance R15 and divider resistance R5 ground connection；
The total current collection terminal of the processor is electrically connected between R4 and the positive output end of rectification chip；
The lightning current collection terminal of the processor is electrically connected between divider resistance R15 and divider resistance R5；
The positive output end of the rectification chip also passes sequentially through divider resistance R2 and divider resistance R14 ground connection；The wake-up electricity
Road is electrically connected between divider resistance R2 and divider resistance R14；
When the input terminal of rectification chip exports lightning current, wake-up circuit collects high level work, is adopted by the processor
Collect lightning current.
Further, the wake-up circuit includes switching tube Q1, opto-coupler chip；
One end of the input side of the opto-coupler chip is drawn high by drawing high resistance R1, and the other end of the input side of the optocoupler passes through
The first order of switching tube Q1 and third level ground connection；
One end of the outlet side of the opto-coupler chip is drawn high by drawing high resistance R3, another termination of the outlet side of the optocoupler
Ground；
The receiving end of the processor, which is electrically connected at, draws high between resistance R3 and opto-coupler chip；
The first order of the switching tube and the Acquisition Circuit are electrically connected, and are suitable in the lightning current inspection for receiving Acquisition Circuit
Signal conduction is surveyed, opto-coupler chip is connected at this time, and processor receives low level, that is, receive lightning current acquisition signal.
Further, the amplifying circuit includes first stage amplifier and two-stage amplifier；
The total current of the Acquisition Circuit successively passes through the first stage amplifier and two-stage amplifier；
The total current collection terminal of the processor is electrically connected in first stage amplifier level-one two-stage amplifier.
The present invention also provides a kind of high-voltage arrester monitoring method, the high-voltage arrester monitoring method is mutual by electric current
Sensor detects after exporting the electric current of high-voltage arrester, to ensure the safety of high-voltage arrester.
Further, the high-voltage arrester monitoring method is executed by high-voltage arrester monitoring device as mentioned.
The invention has the advantages that the present invention provides a kind of high-voltage arrester monitoring device and methods, wherein high pressure
Lightning arrester monitoring device includes: processor, current transformer, current detection module；Current transformer one end series connection access
In high-voltage arrester, the other end and the current detection module are electrically connected；The processor and current detection module electricity
Property connection；The processor is suitable for receiving the total current and lightning current of the current detection module detection.High-voltage arrester exists
When without lightning stroke, there is tens microamperes Dao several hundred microamperes of leakage current between 50KV and ground, by detecting its leakage current, pass through judgement
Leakage current it is normal whether high-voltage arrester is monitored.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is the functional block diagram of high-voltage arrester monitoring device provided by the present invention.
Fig. 2 is the circuit diagram of Acquisition Circuit provided by the present invention.
Fig. 3 is the circuit diagram of wake-up circuit provided by the present invention.
Fig. 4 is the circuit diagram of amplifying circuit provided by the present invention.
Specific embodiment
In conjunction with the accompanying drawings, the present invention is further explained in detail.These attached drawings are simplified schematic diagram, only with
Illustration illustrates basic structure of the invention, therefore it only shows the composition relevant to the invention.
Embodiment 1
Fig. 1-Fig. 4 is please referred to, the present embodiment 1 provides a kind of high-voltage arrester monitoring device, comprising: processor, Current Mutual Inductance
Device, current detection module；In current transformer one end series connection access high-voltage arrester, the other end and the current detecting mould
Block is electrically connected；The processor and the current detection module are electrically connected；The processor is suitable for receiving the electric current inspection
Survey the total current and lightning current of module detection.High-voltage arrester has tens microamperes to arrive when without lightning stroke between 50KV and ground
Several hundred microamperes of leakage current, by detecting its leakage current, by judge leakage current it is normal whether come to high-voltage arrester carry out
Monitoring.
In the present embodiment, the current detection module includes Acquisition Circuit, wake-up circuit and amplifying circuit；It is described
Acquisition Circuit is electrically connected with the wake-up circuit and the amplifying circuit respectively；The processor is electric with the wake-up respectively
Road and the amplifying circuit are electrically connected；The Acquisition Circuit is suitable for acquisition total current and passes after being sent to the amplifying circuit
It is defeated by the processor；The Acquisition Circuit, which is further adapted for detecting when lightning current, sends lightning current detection by the wake-up circuit
Signal gives the processor；The processor is suitable for carrying out thunder by the Acquisition Circuit when receiving lightning current detection signal
Current acquisition.
Wherein, the Acquisition Circuit includes rectification chip, divider resistance R2, divider resistance R14；The current transformer
First output end passes sequentially through the resistance R10 after inductance L2, parallel connection and Transient Suppression Diode D6 and second output terminal electrically connects
It connects；The input terminal of the rectification chip is electrically connected in the both ends of resistance R10, and the friendship for being suitable for inputting current transformer
Galvanic electricity is rectified into direct current；The positive output end of the rectification chip passes through acquisition resistance R4, divider resistance R15 and divider resistance
R5 ground connection；The total current collection terminal of the processor is electrically connected between R4 and the positive output end of rectification chip；The place
The lightning current collection terminal of reason device is electrically connected between divider resistance R15 and divider resistance R5；The forward direction of the rectification chip is defeated
Outlet also passes sequentially through divider resistance R2 and divider resistance R14 ground connection；The wake-up circuit be electrically connected at divider resistance R2 and
Between divider resistance R14；When the input terminal of rectification chip exports lightning current, wake-up circuit collects high level work, passes through
The processor acquires lightning current.It is divided by divider resistance R2 and divider resistance R14, when thunder-strike current generates,
A high level is generated therebetween, to have issued lightning current acquisition signal.
In the present embodiment, the wake-up circuit includes switching tube Q1, opto-coupler chip；The input side of the opto-coupler chip
One end is drawn high by drawing high resistance R1, and the other end of the input side of the optocoupler is connect by the first order and the third level of switching tube Q1
Ground；One end of the outlet side of the opto-coupler chip is drawn high by drawing high resistance R3, the other end ground connection of the outlet side of the optocoupler；
The receiving end of the processor, which is electrically connected at, draws high between resistance R3 and opto-coupler chip；The first order of the switching tube with it is described
Acquisition Circuit is electrically connected, and is suitable for detecting signal conduction in the lightning current for receiving Acquisition Circuit, and opto-coupler chip is connected at this time,
Processor receives low level, that is, receives lightning current acquisition signal.By generating in divider resistance R2 and divider resistance
It is NPN type triode that the high level that R14 is generated, which comes control switch pipe Q1, Q1, high level Shi Daotong, thus when the road Q1 it is logical, in turn
Opto-coupler chip conducting is driven, so that the CPU external interrupt pin of processor be dragged down, triggering lightning current acquires signal.
In the present embodiment, the amplifying circuit includes first stage amplifier and two-stage amplifier；The Acquisition Circuit it is complete
Electric current successively passes through the first stage amplifier and two-stage amplifier；The total current collection terminal of the processor be electrically connected in
First stage amplifier level-one two-stage amplifier.Total current is detected by two-stage amplification, when total current is low current, foundation
The amplified lightning current of second level is as reference, when complete electric electric current is high current, according to the amplified lightning current of level-one as ginseng
It examines.To improve acquisition precision.
In the present embodiment, a kind of high-voltage arrester monitoring method, which is characterized in that the high-voltage arrester monitoring method
It is detected after being exported the electric current of high-voltage arrester by current transformer, to ensure the safety of high-voltage arrester.Pass through inspection
The total current of high-voltage arrester is surveyed, to judge the quality of high-voltage arrester, when normal, circuital range arrives several at tens microamperes
It between hundred microamperes, goes beyond the scope when super, indicates that high-voltage arrester has damaged.
In the present embodiment, the high-voltage arrester monitoring method is held by high-voltage arrester monitoring device as mentioned
Row.High-voltage arrester has tens microamperes Dao several hundred microamperes of leakage current, by detecting it when without lightning stroke between 50KV and ground
Leakage current, by judge leakage current it is normal whether high-voltage arrester is monitored.
In conclusion the present invention provides a kind of high-voltage arrester monitoring device and methods, wherein high-voltage arrester monitoring
Device includes: processor, current transformer, current detection module；Current transformer one end series connection access high-voltage arrester
In, the other end and the current detection module are electrically connected；The processor and the current detection module are electrically connected；It is described
Processor is suitable for receiving the total current and lightning current of the current detection module detection.High-voltage arrester without lightning stroke when,
There is tens microamperes to several hundred microamperes of leakage current between 50KV and ground, by detecting its leakage current, by judging leakage current just
High-voltage arrester is monitored whether often.
Taking the above-mentioned ideal embodiment according to the present invention as inspiration, through the above description, relevant staff is complete
Various changes and amendments can be carried out without departing from the scope of the technological thought of the present invention' entirely.The technology of this invention
Property range is not limited to the contents of the specification, it is necessary to which the technical scope thereof is determined according to the scope of the claim.
Claims (7)
1. a kind of high-voltage arrester monitoring device characterized by comprising
Processor, current transformer, current detection module；
In current transformer one end series connection access high-voltage arrester, the other end and the current detection module are electrically connected；
The processor and the current detection module are electrically connected；
The processor is suitable for receiving the total current and lightning current of the current detection module detection.
2. high-voltage arrester monitoring device as described in claim 1, which is characterized in that
The current detection module includes Acquisition Circuit, wake-up circuit and amplifying circuit；
The Acquisition Circuit is electrically connected with the wake-up circuit and the amplifying circuit respectively；
The processor is electrically connected with the wake-up circuit and the amplifying circuit respectively；
The Acquisition Circuit is suitable for acquisition total current and is transferred to the processor after being sent to the amplifying circuit；
The Acquisition Circuit is further adapted for detecting that sending lightning current by the wake-up circuit when lightning current detects signal to described
Processor；
The processor is suitable for carrying out lightning current acquisition by the Acquisition Circuit when receiving lightning current detection signal.
3. high-voltage arrester monitoring device as claimed in claim 2, which is characterized in that
The Acquisition Circuit includes rectification chip, divider resistance R2, divider resistance R14；
First output end of the current transformer passes sequentially through the resistance R10 and Transient Suppression Diode after inductance L2, parallel connection
D6 and second output terminal are electrically connected；
The input terminal of the rectification chip is electrically connected in the both ends of resistance R10, and be suitable for inputting current transformer
AC rectification is direct current；
The positive output end of the rectification chip passes through acquisition resistance R4, divider resistance R15 and divider resistance R5 ground connection；
The total current collection terminal of the processor is electrically connected between R4 and the positive output end of rectification chip；
The lightning current collection terminal of the processor is electrically connected between divider resistance R15 and divider resistance R5；
The positive output end of the rectification chip also passes sequentially through divider resistance R2 and divider resistance R14 ground connection；The wake-up electricity
Road is electrically connected between divider resistance R2 and divider resistance R14；
When the input terminal of rectification chip exports lightning current, wake-up circuit collects high level work, is adopted by the processor
Collect lightning current.
4. high-voltage arrester monitoring device as claimed in claim 2, which is characterized in that
The wake-up circuit includes switching tube Q1, opto-coupler chip；
One end of the input side of the opto-coupler chip is drawn high by drawing high resistance R1, and the other end of the input side of the optocoupler passes through
The first order of switching tube Q1 and third level ground connection；
One end of the outlet side of the opto-coupler chip is drawn high by drawing high resistance R3, another termination of the outlet side of the optocoupler
Ground；
The receiving end of the processor, which is electrically connected at, draws high between resistance R3 and opto-coupler chip；
The first order of the switching tube and the Acquisition Circuit are electrically connected, and are suitable in the lightning current inspection for receiving Acquisition Circuit
Signal conduction is surveyed, opto-coupler chip is connected at this time, and processor receives low level, that is, receive lightning current acquisition signal.
5. high-voltage arrester monitoring device as claimed in claim 2, which is characterized in that
The amplifying circuit includes first stage amplifier and two-stage amplifier；
The total current of the Acquisition Circuit successively passes through the first stage amplifier and two-stage amplifier；
The total current collection terminal of the processor is electrically connected in first stage amplifier level-one two-stage amplifier.
6. a kind of high-voltage arrester monitoring method, which is characterized in that the high-voltage arrester monitoring method passes through current transformer
It is detected after the electric current of high-voltage arrester is exported, to ensure the safety of high-voltage arrester.
7. high-voltage arrester monitoring method as claimed in claim 6, which is characterized in that the high-voltage arrester monitoring method is logical
High-voltage arrester monitoring device as described in any one in claim 1-5 is crossed to execute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910356149.6A CN110018375A (en) | 2019-04-29 | 2019-04-29 | High-voltage arrester monitoring device and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910356149.6A CN110018375A (en) | 2019-04-29 | 2019-04-29 | High-voltage arrester monitoring device and method |
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| Publication Number | Publication Date |
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| CN110018375A true CN110018375A (en) | 2019-07-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910356149.6A Pending CN110018375A (en) | 2019-04-29 | 2019-04-29 | High-voltage arrester monitoring device and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110456129A (en) * | 2019-08-09 | 2019-11-15 | 锐捷网络股份有限公司 | A kind of current potential difference detecting circuit, detection method and POE system |
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| CN207908613U (en) * | 2018-03-25 | 2018-09-25 | 国家电网公司 | Overhead transmission line shaft tower comprehensive monitor system |
| CN109638966A (en) * | 2018-12-28 | 2019-04-16 | 广州中光电气科技有限公司 | A kind of monitoring of arrester intelligent online, data remote visualization cloud platform system |
| CN210222143U (en) * | 2019-04-29 | 2020-03-31 | 常州工业职业技术学院 | High-voltage lightning arrester monitoring device |
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2019
- 2019-04-29 CN CN201910356149.6A patent/CN110018375A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103852614A (en) * | 2012-11-29 | 2014-06-11 | 山东电力集团公司济宁供电公司 | Circuit for detecting leakage current of busbar |
| CN206481069U (en) * | 2016-12-06 | 2017-09-08 | 宁德时代新能源科技股份有限公司 | Battery sampling integrated chip wake-up circuit and battery energy storage system |
| CN207908613U (en) * | 2018-03-25 | 2018-09-25 | 国家电网公司 | Overhead transmission line shaft tower comprehensive monitor system |
| CN109638966A (en) * | 2018-12-28 | 2019-04-16 | 广州中光电气科技有限公司 | A kind of monitoring of arrester intelligent online, data remote visualization cloud platform system |
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| CN110456129A (en) * | 2019-08-09 | 2019-11-15 | 锐捷网络股份有限公司 | A kind of current potential difference detecting circuit, detection method and POE system |
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