CN103235241A - Thunder and lightning electromagnetic wave distribution monitoring device for electric power line - Google Patents
Thunder and lightning electromagnetic wave distribution monitoring device for electric power line Download PDFInfo
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- CN103235241A CN103235241A CN2013101516592A CN201310151659A CN103235241A CN 103235241 A CN103235241 A CN 103235241A CN 2013101516592 A CN2013101516592 A CN 2013101516592A CN 201310151659 A CN201310151659 A CN 201310151659A CN 103235241 A CN103235241 A CN 103235241A
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Abstract
The invention discloses a thunder and lightning electromagnetic wave distribution monitoring device for an electric power line. The signal output end of an A/D (analog/digital) converter is connected with a singlechip processing circuit, the signal output end of the singlechip processing circuit is connected with a display or an oscilloscope, multiple current sensors are respectively arranged on a tower ground wire bracket and an insulator chain branch, and the signals of the current sensors are output to the A/D converter; and multiple voltage sensors are respectively arranged on the positions of ground wires and towers along a power transmission line. The thunder and lightning electromagnetic wave distribution monitoring device for the electric power line has the characteristics that thunder stroke fault types can be identified conveniently, the over-voltage waveform of a thunder stroke accident spot can be determined and the like.
Description
Technical field
The present invention relates to power transmission line thunder and lightning electromagnetic wave monitoring device, particularly be arranged on the thunder and lightning electromagnetic wave monitoring device at power transmission line shaft tower place.
Background technology
From the electrical network practical operation situation, the line tripping fault ratio that is caused by thunderbolt constantly rises, and thunderbolt is the important harm of transmission line of electricity safe operation.And thunder and lightning is divided into thunder and lightning to the hazard approach (pattern of namely being struck by lightning) of transmission pressure and attacks lead or the rich lead that hits directly.The major influence factors that thunder and lightning is attacked lead (namely strikeing back lead) directly has lightning conducter shunting, shaft tower height, pole tower ground resistance, lead operating voltage; The major influence factors of thunderbolt lead has the lightning conducter shielding angle, shaft tower circuit landform of living in, lead operating voltage, shaft tower height.Existing lightning monitoring device (by be arranged on voltage sensor on the transmission pressure, A/D converter, single-chip microcomputer treatment circuit in turn cascade forms) only in power transmission line collection thunder and lightning data, exist noise immunity little, shortcoming such as can not identify to the thunderbolt pattern.
Summary of the invention
The purpose of this invention is to provide a kind of a kind of power circuit thunder and lightning electromagnetic wave distribution monitoring device of being convenient to intuitively to identify the thunderbolt pattern, determining lightning strike accident point over-voltage waveform.
The object of the present invention is achieved like this: a kind of power circuit thunder and lightning electromagnetic wave distribution monitoring device, the signal output part that comprises A/D converter is connected with the single-chip microcomputer treatment circuit, the signal output part of single-chip microcomputer treatment circuit is connected with display or oscillograph, also has current sensor and voltage sensor; A plurality of current sensors are separately positioned on shaft tower ground line bracket and the insulator chain branch road, and its signal exports described A/D converter to; A plurality of voltage sensors are separately positioned on power transmission line ground wire along the line and shaft tower position.
Described current sensor is three, and wherein, first current sensor is arranged on shaft tower cat head lightning rod position, and second current sensor and the 3rd current sensor are separately positioned on shaft tower left and right supporting arms position.
Described voltage sensor is three, and three voltage sensors are separately positioned on the close position of three-phase power transmission lead on the shaft tower.
Described A/D converter is 12bit～16bit multi-channel a/d converter.
Described A/D converter and processor of single chip computer adopt the HR6100 tester.
Compared with prior art, the present invention has following characteristics and advantage: by at shaft tower ground line bracket and insulator chain branch road lighting current sensor being installed respectively, can distinguish the lightning strike spot of circuit, when circuit generation shielding accident, the amplitude of lightning current that the sensor of corresponding insulator chain branch road measures is more much bigger than the signal of shaft tower ground line bracket upper sensor record; When the counterattack accident took place, except the insulator chain flashover had the signal record mutually, shaft tower ground line bracket sensor also had corresponding wave recording.
By the monitoring to ground wire along the line and electric power line pole tower position voltage waveform, when lightning strike accident takes place, utilize the lightning surge waveform that monitors, utilize time difference location and counter the pushing away of thunder and lightning channel attenuation characteristic, determine accident point lightning surge waveform.
The present invention proposes to gather simultaneously the lightning wave data first on ground wire and power transmission line, than the lightning wave data of only gathering at power transmission line, energy hyperchannel analysis-by-synthesis, the effective eliminating are disturbed, and (counterattack and shielding) has the advantage of identifying intuitively to the lightning fault pattern.
Compared to existing technology, the present invention has is convenient to identify the lightning fault type, determines that lightning strike accident put characteristics such as corrugating.
Description of drawings
Fig. 1 is the installation site synoptic diagram of current sensor on shaft tower.
Fig. 2 is the installation site synoptic diagram of voltage sensor on shaft tower.
Fig. 3 is circuit structure block diagram of the present invention.
Embodiment
(shaft tower is simplified schematic diagram among Fig. 1 referring to Fig. 1, Fig. 2, Fig. 3, it is identical with Fig. 2 essence), a kind of power circuit thunder and lightning electromagnetic wave distribution monitoring device, the signal output part of A/D converter is connected with the single-chip microcomputer treatment circuit, the signal output part of single-chip microcomputer treatment circuit is connected with display or oscillograph, a plurality of current sensors are separately positioned on shaft tower ground line bracket and the insulator chain branch road, and its signal exports described A/D converter to; A plurality of voltage sensors are separately positioned on power transmission line ground wire along the line and shaft tower position.
Referring to Fig. 1, current sensor is three, wherein, first current sensor 3 is arranged on shaft tower 2 cat head lightning rods 1 position, second current sensor 4 and the 3rd current sensor 5 are separately positioned on shaft tower left and right supporting arms position (be connected with ground wire among Fig. 1 at the bottom of the tower on the contact, stake resistance 6 is the equivalent resistance of ground wire).
Referring to Fig. 2, voltage sensor 7,8,9 is separately positioned on the close position of three-phase power transmission lead on the shaft tower.Fig. 2 illustrates voltage sensor 6,7,8 and is used separately as the voltage of gathering three-phase conducting wire.A/D converter is 12bit～16bit multi-channel a/d converter.A/D converter and processor of single chip computer can adopt the HR6100 tester.The tester part of data acquisition adopts parallel acquisition technique, and acquisition rate is up to the every passage of 20Msps.Be particularly suitable for high speed dynamic data Measurement and analysis.The built-in mass storage of HR6100 test macro contains multiple trigger mode, guarantees accurately to catch qualified data, particularly catches dash current the status data that front and back take place takes place.Negative delay length can arrange, and the longlyest can reach the 512K word length.Adopt 12bit ~ 16bitAD converter to guarantee enough amplitude precisions.The collecting part technical indicator: it is hyperchannel that high speed, parallel acquisition, acquisition channel number are adopted in data acquisition; The high sampling rate of every passage is 20Msps; Collection has manually and the internal trigger mode; The data memory length of every passage is the 512k data word.
Claims (5)
1. power circuit thunder and lightning electromagnetic wave distribution monitoring device, comprise that the signal output part of A/D converter is connected with the single-chip microcomputer treatment circuit, the signal output part of single-chip microcomputer treatment circuit is connected with display or oscillograph, it is characterized in that also having current sensor and voltage sensor; A plurality of current sensors are separately positioned on shaft tower ground line bracket and the insulator chain branch road, and its signal exports described A/D converter to; A plurality of voltage sensors are separately positioned on power transmission line ground wire along the line and shaft tower position.
2. a kind of power circuit thunder and lightning electromagnetic wave distribution monitoring device according to claim 1, it is characterized in that, described current sensor is three, wherein, first current sensor (3) is arranged on shaft tower cat head lightning rod (1) position, and second current sensor (4) and the 3rd current sensor (5) are separately positioned on shaft tower left and right supporting arms position.
3. a kind of power circuit thunder and lightning electromagnetic wave distribution monitoring device according to claim 2 is characterized in that described voltage sensor is three, and three voltage sensors are separately positioned on the close position of three-phase power transmission lead on the shaft tower.
4. a kind of power circuit thunder and lightning electromagnetic wave distribution monitoring device according to claim 3 is characterized in that described A/D converter is 12bit～16bit multi-channel a/d converter.
5. a kind of power circuit thunder and lightning electromagnetic wave distribution monitoring device according to claim 4 is characterized in that, described A/D converter and processor of single chip computer adopt the HR6100 tester.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101516592A CN103235241A (en) | 2013-04-27 | 2013-04-27 | Thunder and lightning electromagnetic wave distribution monitoring device for electric power line |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013101516592A CN103235241A (en) | 2013-04-27 | 2013-04-27 | Thunder and lightning electromagnetic wave distribution monitoring device for electric power line |
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| CN103235241A true CN103235241A (en) | 2013-08-07 |
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| CN2013101516592A Pending CN103235241A (en) | 2013-04-27 | 2013-04-27 | Thunder and lightning electromagnetic wave distribution monitoring device for electric power line |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104749429A (en) * | 2015-04-08 | 2015-07-01 | 四川拓普测控科技有限公司 | Lightning overvoltage signal losslessly compressing and recording system |
| CN108801442A (en) * | 2018-06-06 | 2018-11-13 | 清华大学 | A kind of transmission line galloping monitoring method based on ground wire induced voltage |
| CN112065362A (en) * | 2020-09-24 | 2020-12-11 | 东北石油大学 | Anti-interference type natural potential logging device and method |
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| JPS60162966A (en) * | 1984-02-02 | 1985-08-24 | Taisuke Inoue | Display device for passing of accident current of power transmission line |
| JPS60214273A (en) * | 1984-04-10 | 1985-10-26 | Hitachi Cable Ltd | Detecting method of lightning stroke |
| JP2723929B2 (en) * | 1988-10-14 | 1998-03-09 | 株式会社日立製作所 | Lightning strike location system |
| CN101093240A (en) * | 2006-06-23 | 2007-12-26 | 郭玉章 | Method for determining lightning strike point on electric power transmission line |
| CN101692103A (en) * | 2009-08-26 | 2010-04-07 | 清华大学 | Testing method of parameters and characteristics of lightning strike of electric transmission line |
| CN101937015A (en) * | 2010-08-27 | 2011-01-05 | 西安交通大学 | Device for online monitoring lightning current and lightning voltage waveform parameters of overhead transmission line |
| CN203275568U (en) * | 2013-04-27 | 2013-11-06 | 国家电网公司 | Device for monitoring lightning-generated electromagnetic wave distribution of power lines |
-
2013
- 2013-04-27 CN CN2013101516592A patent/CN103235241A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60162966A (en) * | 1984-02-02 | 1985-08-24 | Taisuke Inoue | Display device for passing of accident current of power transmission line |
| JPS60214273A (en) * | 1984-04-10 | 1985-10-26 | Hitachi Cable Ltd | Detecting method of lightning stroke |
| JP2723929B2 (en) * | 1988-10-14 | 1998-03-09 | 株式会社日立製作所 | Lightning strike location system |
| CN101093240A (en) * | 2006-06-23 | 2007-12-26 | 郭玉章 | Method for determining lightning strike point on electric power transmission line |
| CN101692103A (en) * | 2009-08-26 | 2010-04-07 | 清华大学 | Testing method of parameters and characteristics of lightning strike of electric transmission line |
| CN101937015A (en) * | 2010-08-27 | 2011-01-05 | 西安交通大学 | Device for online monitoring lightning current and lightning voltage waveform parameters of overhead transmission line |
| CN203275568U (en) * | 2013-04-27 | 2013-11-06 | 国家电网公司 | Device for monitoring lightning-generated electromagnetic wave distribution of power lines |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104749429A (en) * | 2015-04-08 | 2015-07-01 | 四川拓普测控科技有限公司 | Lightning overvoltage signal losslessly compressing and recording system |
| CN108801442A (en) * | 2018-06-06 | 2018-11-13 | 清华大学 | A kind of transmission line galloping monitoring method based on ground wire induced voltage |
| CN112065362A (en) * | 2020-09-24 | 2020-12-11 | 东北石油大学 | Anti-interference type natural potential logging device and method |
| CN112065362B (en) * | 2020-09-24 | 2023-03-31 | 东北石油大学 | Anti-interference type natural potential logging device and method |
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Application publication date: 20130807 |