CN205506984U - Power transmission line insulator leakage current on -line monitoring system - Google Patents
Power transmission line insulator leakage current on -line monitoring system Download PDFInfo
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- CN205506984U CN205506984U CN201620133358.6U CN201620133358U CN205506984U CN 205506984 U CN205506984 U CN 205506984U CN 201620133358 U CN201620133358 U CN 201620133358U CN 205506984 U CN205506984 U CN 205506984U
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Abstract
The utility model provides a power transmission line insulator leakage current on -line monitoring system, includes the collector ring, and the output and the input of leakage current sensor of collector ring are connected, and the output of leakage current sensor is connected with low pass filter, high pass filter's input respectively, and low pass filter's output falls into two the tunnel: through high power amplifier circuit, first sampling module and CPU main control chip connection, another way is connected through low power amplifier circuit, second sampling module and CPU main control chip all the way, high pass filter's output falls into two the tunnel: connect through 3mA comparison circuit and CPU main control chip all the way, another way is through 10mA comparison circuit and CPU main control chip connection, and CPU main control chip passes through 4G wireless communication module and monitoring host both way junction, the utility model discloses deliver to monitoring host through data acquisition, processing, to insulator leakage current real -time supervision, system integration is high, the current measurement wide range, and the precision is high.
Description
Technical field
This utility model relates to electric power transmission line detection technique field, particularly to a kind of electric transmission line isolator On-line Monitoring of Leakage Current system.
Background technology
Along with the fast development of national economy, improving constantly of power system transmission line electric pressure, pollution flashover fault is increasingly severe to national economy adverse influence.People are after detailed theory analysis and substantial amounts of High-Voltage Experimentation, find that the change of insulator leakage current has close relationship with its pollution level, the concentrated expression generating process of pollution flashover, therefore On-line Monitoring of Leakage Current is a kind of effective means judging line insulator pollution level and initial failure.
The electric transmission line isolator system for monitoring leakage current used at present mainly accepts the radio frequency component of the electromagnetic wave that pulse current produces, measured by an AM radio accepter, the easily malfunction by the interference of outer signals, and because physical features and the impact of distance, on using, there is certain limitation.
Summary of the invention
For the shortcoming overcoming above-mentioned prior art, the purpose of this utility model is to provide a kind of electric transmission line isolator On-line Monitoring of Leakage Current system, it is capable of detecting in real time, reliability is high, and do not affected by the complicated geographical conditions such as mountain shape, river and street, solved communication and the powerup issue of overlength distance.
In order to achieve the above object, the technical scheme that this utility model is taked is:
A kind of electric transmission line isolator On-line Monitoring of Leakage Current system, including collecting ring 1, the outfan of collecting ring 1 is connected with the input of leakage current sensor 2, the outfan of leakage current sensor 2 respectively with low pass filter 3, the input of high pass filter 4 connects, the outfan of low pass filter 3 respectively with magnification at high multiple circuit 5, the input of low power amplifying circuit 6 connects, the outfan of magnification at high multiple circuit 5 and the input of the first sampling module 9 connect, the outfan of low power amplifying circuit 6 and the input of the second sampling module 10 connect, the outfan of the first sampling module 9 is connected with the first input end of CPU main control chip 13, the outfan of the second sampling module 10 is connected with the second input of CPU main control chip 13；
The outfan of high pass filter 4 input with 3mA comparison circuit 7,10mA comparison circuit 8 respectively is connected, the outfan of 3mA comparison circuit 7 is connected with the 3rd input of CPU main control chip 13, the outfan of 10mA comparison circuit 8 is connected with the four-input terminal of CPU main control chip 13
5th input of CPU main control chip 13 and the outfan of accumulator 12 connect, the input of accumulator 12 and the outfan of solar electrical energy generation module 11 connect, and the 6th input/output terminal of CPU main control chip 13 is bi-directionally connected by 4G wireless communication module 14 and monitoring host computer 15.
The leakage current on electric transmission line isolator surface is acquired by described collecting ring 1.
The current transformation of collection is voltage signal by described leakage current sensor 2, it is simple to circuit is nursed one's health and measured.
Described CPU main control chip 13 coordinates to control the work of modules, and processes collection information and communication information.
Described 4G wireless communication module 14 is used for carrying out telecommunication between CPU main control chip 13 and monitoring host computer.
The described monitoring host computer 15 waveform to measuring in real time, voltage and electric current original waveform, the duty of leakage current development trend waveform and whole monitoring system shows.
The utility model has the advantage of: can be by directly measuring the leakage current of insulator surface, through data sampling and processing, deliver to monitoring host computer 15 and reach the purpose of monitoring real-time to insulator leakage current, level of integrated system is high, current measuring range is wide, precision is high, leakage current waveform of can effectively analyzing simple to operate, diagnoses external insulation situation.
Accompanying drawing explanation
Accompanying drawing is structured flowchart of the present utility model.
Detailed description of the invention
Below in conjunction with Figure of description, this utility model is further illustrated.
Referring to the drawings, a kind of electric transmission line isolator On-line Monitoring of Leakage Current system, including collecting ring 1, the outfan of collecting ring 1 is connected with the input of leakage current sensor 2, the outfan of leakage current sensor 2 respectively with low pass filter 3, the input of high pass filter 4 connects, the outfan of low pass filter 3 respectively with magnification at high multiple circuit 5, the input of low power amplifying circuit 6 connects, the outfan of magnification at high multiple circuit 5 and the input of the first sampling module 9 connect, the outfan of low power amplifying circuit 6 and the input of the second sampling module 10 connect, the outfan of the first sampling module 9 is connected with the first input end of CPU main control chip 13, the outfan of the second sampling module 10 is connected with the second input of CPU main control chip 13；
The outfan of high pass filter 4 input with 3mA comparison circuit 7,10mA comparison circuit 8 respectively is connected, the outfan of 3mA comparison circuit 7 is connected with the 3rd input of CPU main control chip 13, the outfan of 10mA comparison circuit 8 is connected with the four-input terminal of CPU main control chip 13
5th input of CPU main control chip 13 and the outfan of accumulator 12 connect, the input of accumulator 12 and the outfan of solar electrical energy generation module 11 connect, and the 6th input/output terminal of CPU main control chip 13 is bi-directionally connected by 4G wireless communication module 14 and monitoring host computer 15.
The leakage current on electric transmission line isolator surface is acquired by described collecting ring 1.
The current transformation of collection is voltage signal by described leakage current sensor 2, it is simple to circuit is nursed one's health and measured.
Described low pass filter 3 is used for obtaining low frequency signal.
Described high pass filter 4 is used for obtaining high frequency partial discharge pulse signal.
The voltage signal that described magnification at high multiple circuit 5 is less after being used for amplifying leakage current conversion.
The voltage signal that described low power amplifying circuit 6 is bigger after being used for amplifying leakage current conversion.
The reference voltage that described 3mA comparison circuit 7 is used to high frequency partial discharge pulse signal is corresponding with 3mA leakage current compares.
The reference voltage that described 10mA comparison circuit 8 is used to high frequency partial discharge pulse signal is corresponding with 10mA leakage current compares.
Voltage signal after magnification at high multiple is sampled and is delivered to CPU main control chip 13 and processes by the first described sampling module 9.
Voltage signal after low power amplification is sampled and is delivered to CPU main control chip and processes by the second described sampling module 10.
Described solar electrical energy generation module 11 is to utilize solar energy to generate electricity.
Described accumulator 12 is to be stored by solar energy institute generated energy, provides power supply support for whole detecting system.
Described CPU main control chip 13 coordinates to control the work of modules, and processes collection information and communication information.
Described 4G wireless communication module 14 is used for carrying out communication between CPU main control chip 13 and monitoring host computer.
The described monitoring host computer 15 waveform to measuring in real time, voltage and electric current original waveform, the duty of leakage current development trend waveform and whole monitoring system shows.
Operation principle of the present utility model is: the leakage current on electric transmission line isolator surface is acquired through collecting ring 1, convert through leakage current sensor 2, leakage current signal after conversion is voltage signal, being easy to circuit nurse one's health and measure, the voltage signal converted is allocated as two parts and processes:
A part is amplified after low pass filter 3, owing to leakage current excursion is wider, amplifying circuit divides high amplifying circuit 5 and low amplifying circuit 6, it is put into signal and is transferred to CPU main control chip 13 after using resume module, after CPU main control chip 13 calculation process, obtain the virtual value of power frequency leakage current.
Another part becomes the signal comprising high frequency partial discharge pulse after high pass filter 4, this signal is made comparisons with 3mA comparison circuit 7 and 10mA comparison circuit 8 respectively, the out-of-limit pulse signal of CPU main control chip 13 it is transferred to after comparison circuit, CPU main control chip 13 carries out pulse capture counting, obtains the umber of pulse more than 3mA and 10mA.
Measure the power frequency leakage current sampled value and partial discharge pulse's number obtained, within the measurement cycle of acquiescence after the calling order receiving CPU main control chip 13, it is uploaded to monitoring host computer 15 by 4G wireless communication module 14, thus completes insulator leakage current is monitored in real time.
Claims (6)
- null1. an electric transmission line isolator On-line Monitoring of Leakage Current system，Including collecting ring (1)，The outfan of collecting ring (1) is connected with the input of leakage current sensor (2)，It is characterized in that: the outfan of leakage current sensor (2) respectively with low pass filter (3)、The input of high pass filter (4) connects，The outfan of low pass filter (3) respectively with magnification at high multiple circuit (5)、The input of low power amplifying circuit (6) connects，The outfan of magnification at high multiple circuit (5) and the input of the first sampling module (9) connect，The outfan of low power amplifying circuit (6) and the input of the second sampling module (10) connect，The outfan of the first sampling module (9) is connected with the first input end of CPU main control chip (13)，The outfan of the second sampling module (10) is connected with the second input of CPU main control chip (13)；The outfan of high pass filter (4) input with 3mA comparison circuit (7), 10mA comparison circuit (8) respectively is connected, the outfan of 3mA comparison circuit (7) is connected with the 3rd input of CPU main control chip (13), and the outfan of 10mA comparison circuit (8) is connected with the four-input terminal of CPU main control chip (13)；5th input of CPU main control chip (13) and the outfan of accumulator (12) connect, the input of accumulator (12) and the outfan of solar electrical energy generation module (11) connect, and the 6th input/output terminal of CPU main control chip (13) is bi-directionally connected by 4G wireless communication module (14) and monitoring host computer (15).
- A kind of electric transmission line isolator On-line Monitoring of Leakage Current system the most according to claim 1, it is characterised in that: the leakage current on electric transmission line isolator surface is acquired by described collecting ring (1).
- A kind of electric transmission line isolator On-line Monitoring of Leakage Current system the most according to claim 1, it is characterised in that: the current transformation of collection is voltage signal by described leakage current sensor (2), it is simple to circuit is nursed one's health and measured.
- A kind of electric transmission line isolator On-line Monitoring of Leakage Current system the most according to claim 1, it is characterised in that: described CPU main control chip (13) coordinates to control the work of modules, and processes collection information and communication information.
- A kind of electric transmission line isolator On-line Monitoring of Leakage Current system the most according to claim 1, it is characterised in that: described 4G wireless communication module (14) is used for communicating wirelessly between CPU main control chip (13) and monitoring host computer (15).
- A kind of electric transmission line isolator On-line Monitoring of Leakage Current system the most according to claim 1, it is characterized in that: the described monitoring host computer (15) waveform to measuring in real time, voltage and electric current original waveform, the duty of leakage current development trend waveform and whole monitoring system shows.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620133358.6U CN205506984U (en) | 2016-02-22 | 2016-02-22 | Power transmission line insulator leakage current on -line monitoring system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620133358.6U CN205506984U (en) | 2016-02-22 | 2016-02-22 | Power transmission line insulator leakage current on -line monitoring system |
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| CN205506984U true CN205506984U (en) | 2016-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620133358.6U Expired - Fee Related CN205506984U (en) | 2016-02-22 | 2016-02-22 | Power transmission line insulator leakage current on -line monitoring system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107271833A (en) * | 2017-06-05 | 2017-10-20 | 江苏尚坤电力安装有限公司 | A kind of electric transmission line isolator On-line Monitoring of Leakage Current method and its system |
| CN107328951A (en) * | 2017-08-21 | 2017-11-07 | 安徽中家智康科技有限公司 | It is a kind of that the method for reducing frequency-changeable compressor tachometric survey error is realized by dividing measurement |
| CN108872696A (en) * | 2018-01-09 | 2018-11-23 | 国网山东省电力公司滨州供电公司 | A kind of leakage current circuit measuring high voltage iron tower tester |
| CN110031727A (en) * | 2019-05-23 | 2019-07-19 | 唐智科技湖南发展有限公司 | A kind of fault monitoring system and insulator breakdown intelligence operation platform of insulator |
| CN111025082A (en) * | 2019-11-22 | 2020-04-17 | 国网江苏省电力有限公司电力科学研究院 | Signal separation real-time processing method and system for two-in-one sensor |
| CN115144790A (en) * | 2022-09-02 | 2022-10-04 | 山东理工大学 | High-voltage insulator leakage current online monitoring system and method |
| CN116203462A (en) * | 2023-02-07 | 2023-06-02 | 广东电网有限责任公司 | Insulator fault detection system, method and medium |
-
2016
- 2016-02-22 CN CN201620133358.6U patent/CN205506984U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107271833A (en) * | 2017-06-05 | 2017-10-20 | 江苏尚坤电力安装有限公司 | A kind of electric transmission line isolator On-line Monitoring of Leakage Current method and its system |
| CN107328951A (en) * | 2017-08-21 | 2017-11-07 | 安徽中家智康科技有限公司 | It is a kind of that the method for reducing frequency-changeable compressor tachometric survey error is realized by dividing measurement |
| CN107328951B (en) * | 2017-08-21 | 2020-01-17 | 安徽中家智康科技有限公司 | Method for reducing measurement error of rotating speed of variable frequency compressor through frequency division measurement |
| CN108872696A (en) * | 2018-01-09 | 2018-11-23 | 国网山东省电力公司滨州供电公司 | A kind of leakage current circuit measuring high voltage iron tower tester |
| CN110031727A (en) * | 2019-05-23 | 2019-07-19 | 唐智科技湖南发展有限公司 | A kind of fault monitoring system and insulator breakdown intelligence operation platform of insulator |
| CN110031727B (en) * | 2019-05-23 | 2021-08-10 | 唐智科技湖南发展有限公司 | Fault monitoring system of insulator and intelligent operation and maintenance platform for insulator fault |
| CN111025082A (en) * | 2019-11-22 | 2020-04-17 | 国网江苏省电力有限公司电力科学研究院 | Signal separation real-time processing method and system for two-in-one sensor |
| CN115144790A (en) * | 2022-09-02 | 2022-10-04 | 山东理工大学 | High-voltage insulator leakage current online monitoring system and method |
| CN115144790B (en) * | 2022-09-02 | 2022-11-18 | 山东理工大学 | High-voltage insulator leakage current online monitoring system and method |
| CN116203462A (en) * | 2023-02-07 | 2023-06-02 | 广东电网有限责任公司 | Insulator fault detection system, method and medium |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160824 Termination date: 20190222 |