CN100565604C - A kind of lightning current measurement method and device - Google Patents
A kind of lightning current measurement method and device Download PDFInfo
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- CN100565604C CN100565604C CNB2007101690108A CN200710169010A CN100565604C CN 100565604 C CN100565604 C CN 100565604C CN B2007101690108 A CNB2007101690108 A CN B2007101690108A CN 200710169010 A CN200710169010 A CN 200710169010A CN 100565604 C CN100565604 C CN 100565604C
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Abstract
A kind of lightning current measurement method and device, adopt the double-direction radio communication modes, adopt multichannel front end survey record instrument and the hand-held receiving instrument in rear end, front end survey record instrument is installed on electric power line pole tower or the various high tower, the amplitude of the lightning current when being used for measuring and write down the thunderbolt shaft tower, steepness, polarity and thunderbolt shaft tower time; The hand-held receiving instrument in rear end is used for reading the record that is stored in front end survey record instrument by manually-operated, and the clock of calibration front end survey record instrument.Front end survey record instrument is made up of multi-channel analog switch circuit, signal conditioning circuit, positive and negative peak holding circuit, measurement triggering circuit, processor unit, data storage cell, wireless data transfer module and a plurality of current sensor; The hand-held receiving instrument in rear end is a portable handheld device, is made up of matrix keyboard, character type dot matrix lcd module, processor unit and wireless data transfer module.Cost is low, measurement result is accurate, time precision is high, measurement data is convenient to read.
Description
Technical field
The invention belongs to the lightning current measuring field, relate in particular to a kind of lightning current measurement method and device, be applicable to the lightning current parameter measurement of electric power line pole tower or various high towers.
Background technology
The measurement of lightning current parameter improves the lightning protection facility performance to inquiring into the lightning protection countermeasure, estimates protection domain and the analysis damage to crops caused by thunder accident of lightning protection facility to various device and buildings, distinguishes accident responsibility, has crucial meaning.Simultaneously, the measurement of lightning current parameter also is the element task of carrying out the thunder and lightning characteristic research.
The measurement of lightning current parameter has remote measurement and directly measures dual mode.Remote measurement is to utilize the lightening detection antenna to survey to propagate from afar the thunder and lightning electromagnetic wave of coming and in this anti-lightning current parameter measurement mode that pushes away amplitude of lightning current and waveform.Because the lightening detection antenna is away from the thunder and lightning origination point, the thunder and lightning electromagnetic wave is influenced by landform, buildings etc. in communication process, has in various degree decay and chromatic dispersion, and is therefore, not high by the lightning current parameter accuracy that remote measurement measures.It is the mode of lightning current directly being measured at the thunderbolt origination point that the lightning current parameter is directly measured.Because certain of thunderbolt jobbie or object is a small probability event, therefore, the direct measurement of lightning current can only be " extensive cultivation ", and this just needs a kind of not only accuracy of measurement height but also the also lower measurement mechanism of cost.Past generally is to adopt the method that magnetic link is installed on electric power line pole tower, and to be that cost is low be convenient to a large amount of installations to this method advantage, but that shortcoming is a measuring result error is big, can not write down the thunderbolt time and obtain the data inconvenience, and labor capacity is very big.
Chinese invention patent 200410028110.5 " method and apparatus of record thunder-strike current intensity and time of origin " has solved the problem of measuring accuracy, but can only write down intensity, time and number of times that the interior thunderbolt of section sometime takes place, and these equipment internal clock cumulative errors can not be corrected, so the thunderbolt time accuracy of record is not high.
The main application of China's utility model patent 200520105910.2 " high-voltage transmission line lightning stroke telemetry equipment " is searching fast of lightning fault point, by thunderbolt apparatus for management of information inquiry shaft tower whether the thunderbolt record is arranged, thereby search the lightning fault point fast, though also measured the intensity and the time of lightning current, but do not write down complete lightning current information, such as polarity and steepness." high-voltage transmission line lightning stroke telemetry equipment " adopted the communication modes of mobile communication network, because there is network delay in the communication network data transmission, and time-delay has uncertainty, so the clocking error of accumulative total can not be revised accurately in this equipment, the thunderbolt time accuracy that is write down is not high yet, computer information management system is adopted in this device rear end, and from the technical standpoint analysis, whole one-tenth should compare height.
Summary of the invention
The present invention considers that the deficiency in the above-mentioned technology designs, and a kind of lightning current measurement method and device are provided, and this method and installation cost are low, measurement result is accurate, time precision is high, measurement data is convenient to read.The lightning current parameter that this covering device can be calibrated, be used to survey and collect transmission line of lightning strike shaft tower and other high tower internal clocking at any time.
Technical scheme of the present invention is: a kind of lightning current measurement method, it is characterized in that: adopt the double-direction radio communication modes, adopt multichannel front end survey record instrument and the hand-held receiving instrument in rear end, front end survey record instrument is installed on electric power line pole tower or the various high tower, the amplitude of the lightning current when being used for measuring and write down the thunderbolt shaft tower, steepness, polarity and thunderbolt shaft tower time; The hand-held receiving instrument in rear end is used for reading the record that is stored in front end survey record instrument by manually-operated, and the clock of calibration front end survey record instrument.
Realize the lightning current measuring device of said method, it is characterized in that: be made up of multichannel front end survey record instrument and the hand-held receiving instrument in rear end, front end survey record instrument is made up of multi-channel analog switch circuit, signal conditioning circuit, positive and negative peak holding circuit, measurement triggering circuit, processor unit, data storage cell, wireless data transfer module and a plurality of current sensor; The output of a plurality of current sensors connects the input end of multi-channel analog switch circuit, and the output signal of multi-channel analog switch circuit connects the input end of modulate circuit, and the output of signal conditioning circuit connects the input end of positive and negative peak holding circuit and measurement triggering circuit; The output terminal of positive and negative peak holding circuit is connected with the A/D input channel of processor unit, and the output terminal of measurement triggering circuit is connected with the interrupting input end of processor unit; The I of data storage cell and processor unit
2C interface connects; Wireless data transfer module is connected with the serial ports of processor unit;
The hand-held receiving instrument in rear end is a portable handheld device, is made up of matrix keyboard, character type dot matrix lcd module, processor unit and wireless data transfer module.Hand-held receiving instrument is designed to the man-machine interface mode that button and liquid crystal display menu combine, and does not need Special Training, just can very easy use.
Aforesaid lightning current measuring device is characterized in that: in the front end survey record instrument, its inside of processor unit has multichannel A/D converter and hardware real time clock.
Aforesaid lightning current measuring device is characterized in that: in the hand-held receiving instrument in described front end survey record instrument and rear end, wireless data transfer module is micropower, low-cost ISM band wireless communication module, serial interface, reliable transmission separation 500m.
Aforesaid lightning current measuring device is characterized in that: front end survey record instrument adopts processor chips LPC2103, and the hand-held receiving instrument in rear end adopts processor chips C8051F310.
Aforesaid lightning current measuring device, it is characterized in that: front end survey record instrument is the lightning current measuring link, current sensor in the front end survey record instrument is used for detecting the electric current that flows through the position that is associated, current sensor is hollow Rogowski coil+integral unit, installs perpendicular to overhead line structures; Or fibre optic current sensor.
Aforesaid lightning current measuring device is characterized in that: in the front end survey record instrument, but data storage cell is the E of serial i 2C interface power down storage
2PROM.
Aforesaid lightning current measuring device is characterized in that: in the front end survey record instrument, what power supply adopted is that solar panel and rechargeable battery connect and compose.
Aforesaid lightning current measuring device is characterized in that: in the hand-held receiving instrument in described rear end, the character type dot matrix lcd module is a serial data interface, and 128 * 64 dot matrix altogether can show the English character and the Chinese character of different dot matrix sizes.
According to above-mentioned formation, the lightning current parameter of electric power line pole tower can be measured and write down to the front end survey record instrument of this thunder and lightning measurement mechanism accurately, by the hand-held receiving instrument in rear end, can obtain measurement data easily, and be presented on the hand-held receiving instrument LCDs in rear end, and can calibrate the clock of front end survey record instrument at any time.
Except adopt micropower, cheaply the wireless data transfer module, front end survey record instrument adopts processor chips LPC2103, the hand-held receiving instrument in rear end adopts processor chips C8051F310, their integrated level height, low in energy consumption, cost performance is high, front end survey record instrument is survey record multichannel lightning current signals simultaneously just.
Whole device the present invention has following characteristics: the high and low power consumption of measured value precision, do not have to postpone calibration to the time technology (guaranteeing that time error was controlled at 1 second), easy to use, reliability is high, whole cost is low, can install in a large number.
Description of drawings
Fig. 1 is the use synoptic diagram of the embodiment of the invention.
Fig. 2 is the theory structure block diagram of the front end survey record instrument of the embodiment of the invention.
Fig. 3 is the theory structure block diagram of the hand-held receiving instrument in rear end of the embodiment of the invention.
Fig. 4 is the circuit theory diagrams of front end survey record instrument among Fig. 2.
Fig. 5 is the circuit theory diagrams of the hand-held receiving instrument in rear end among Fig. 3.
Embodiment
Below in conjunction with accompanying drawing and concrete embodiment content of the present invention is described in further detail.
The explanation of mark among the figure: 1-front end survey record instrument, the hand-held instrument of accepting in 2-rear end.
Fig. 1 is a use synoptic diagram of the present invention, and front end survey record instrument can be installed in electric power line pole tower lightning conducter, cat head and column foot.When the thunderbolt shaft tower, if being installed, the position of front end survey record instrument have lightning current to flow through, front end survey record instrument will be measured and the amplitude and the polarity of the electric current that recorded stream is crossed, and notes the thunderbolt time simultaneously.
The line walking workman is in line walking, read information in the front end survey record instrument with the hand-held receiving instrument in rear end, if the lightning current data recording is arranged therein, by simple manually-operated, the lightning current data message is received on the hand-held receiving instrument in rear end by wireless mode, and on the LCD Panel of the hand-held receiving instrument in rear end, in chronological sequence show the lightning current data message in proper order.The line walking workman can also read clock in the front end survey record instrument by the hand-held receiving instrument in rear end, if find time of reading and real time differ bigger, can carry out time calibration to front end survey record instrument by the hand-held receiving instrument in rear end.
When needs are measured the lightning current of same electric power line pole tower different parts, front end survey record instrument inserts the current sensor that is installed in these positions simultaneously, each current sensor is numbered processing gets final product, front end survey record instrument can be measured 8 road signals at most simultaneously.
Can load onto front end survey record instrument on high-tension line each tower along the line, the line walking workman just reads the information in the front end survey record instrument on this tower with the hand-held receiving instrument in rear end after going to each tower in line walking.Because the half-distance between tower is far away than the communication distance of hand-held receiving instrument in rear end and front end survey record instrument, so can not misread.
Fig. 2 is the principle of work block diagram of front end survey record instrument, behind the output signal process multi-channel analog switch circuit and signal conditioning circuit of current sensor, filters power frequency component and other undesired signal; The high speed positive peak keeps passage and high speed negative peak to keep passage, finishes the peak-value-holding function of positive negative signal respectively; The effect of measurement triggering circuit is that notification processor LPC2103 starts measurement when having detected lightning current signals, the output of voltage comparator LM311 in the measurement triggering circuit connects the interruption input of LPC2103, only when the output of voltage comparator becomes high level by low level, just expression has detected lightning current signals, by changing the negative relatively magnitude of voltage of input end of voltage comparator, suitable threshold values is set, can not think it is lightning current signals by mistake like this, can the little lightning current signals of excessive test leakage be set yet because of threshold values because of threshold values is provided with other signal of young pathbreaker; LPC2103 is 32 bit processors of an ARM7TDMI kernel, and its inside has ten A/D converters and the hardware real time clock of one eight passage input, does not need to expand peripheral circuit and just can finish peak value measurement and also have time keeping; Data storage cell is used for writing down the lightning current parameter, after detecting new lightning current at every turn, just new lightning current supplemental characteristic is write wherein, a lightning current reference record comprises peak value size, steepness, polarity, thunderbolt time, and data-carrier store adopts the Serial E of can power down storing
2The PROM device after the power down of front end survey record instrument, still can be preserved former lightning current parameter information; Wireless data transfer module adopts the STR-36 type micropower ISM band wireless communication module of Shanghai Sang Bo electronics technology company limited, the emissive power of maximum 10mW, and serial interface, the reliable transmission separation is 500m.Front end survey record instrument also has temporal information to send on the hand-held receiving instrument in rear end the lightning current parameter information behind the command request of receiving the hand-held receiving instrument in rear end.
Front end survey record instrument all is placed in the metal shell except the antenna of wireless data transfer module, to strengthen effectiveness.
Fig. 3 is the theory structure block diagram of the hand-held receiving instrument in rear end, and hand-held receiving instrument is made of matrix keyboard, character type lattice lcd module, wireless data transfer module, 8 single-chip microcomputers of C8051F310 high speed.The mode that button and liquid crystal display combine is formed man-machine interface, so that operation and use, liquid crystal display is designed to the form of multilevel menu, and the different different command functions of menu representative sends different command requests by the hand-held receiving instrument forward end survey record instrument in rear end.
The software fault-tolerant processing mode is adopted in communication between the hand-held receiving instrument in front end survey record instrument and rear end, guarantees the minimum bit error rate, can not occur the situation that occurs crashing because of communicating interrupt simultaneously, uses reliable.
Fig. 4 and Fig. 5 are respectively the circuit theory diagrams of the hand-held receiving instrument of front end survey record instrument and rear end.
Claims (9)
1, a kind of lightning current measurement method, it is characterized in that: adopt the double-direction radio communication modes, adopt multichannel front end survey record instrument and the hand-held receiving instrument in rear end, front end survey record instrument is installed on electric power line pole tower or the various high tower, the amplitude of the lightning current when being used for measuring and write down the thunderbolt shaft tower, steepness, polarity and thunderbolt shaft tower time; The hand-held receiving instrument in rear end is used for reading the record that is stored in front end survey record instrument by manually-operated, and the clock of calibration front end survey record instrument.
2, realize the lightning current measuring device of method according to claim 1, it is characterized in that: be made up of multichannel front end survey record instrument and the hand-held receiving instrument in rear end, front end survey record instrument is made up of multi-channel analog switch circuit, signal conditioning circuit, positive and negative peak holding circuit, measurement triggering circuit, processor unit, data storage cell, wireless data transfer module and a plurality of current sensor; The output of a plurality of current sensors connects the input end of multi-channel analog switch circuit, and the output signal of multi-channel analog switch circuit connects the input end of modulate circuit, and the output of signal conditioning circuit connects the input end of positive and negative peak holding circuit and measurement triggering circuit; The output terminal of positive and negative peak holding circuit is connected with the A/D input channel of processor unit, and the output terminal of measurement triggering circuit is connected with the interrupting input end of processor unit; Data storage cell is connected with the I2C interface of processor unit; Wireless data transfer module is connected with the serial ports of processor unit;
The hand-held receiving instrument in rear end is a portable handheld device, is made up of matrix keyboard, character type dot matrix lcd module, processor unit and wireless data transfer module.
3, lightning current measuring device as claimed in claim 2 is characterized in that: in the front end survey record instrument, its inside of processor unit has multichannel A/D converter and hardware real time clock.
4, lightning current measuring device as claimed in claim 3, it is characterized in that: in the hand-held receiving instrument in described front end survey record instrument and rear end, wireless data transfer module is micropower, low-cost ISM band wireless communication module, serial interface, and reliable transmission is apart from 500m.
5, lightning current measuring device as claimed in claim 4 is characterized in that: front end survey record instrument adopts processor chips LPC2103, and the hand-held receiving instrument in rear end adopts processor chips C8051F310.
6, lightning current measuring device as claimed in claim 2, it is characterized in that: front end survey record instrument is as the lightning current measuring link, current sensor in the front end survey record instrument is used for detecting the electric current that flows through the position that is associated, current sensor is hollow Rogowski coil and integral unit, installs perpendicular to overhead line structures; Or fibre optic current sensor.
7, lightning current measuring device as claimed in claim 2 is characterized in that: in the front end survey record instrument, data storage cell is a serial i
2But the E2PROM of C interface and power down storage.
8, lightning current measuring device as claimed in claim 2 is characterized in that: in the front end survey record instrument, what power supply adopted is that solar panel and rechargeable battery connect and compose.
9, lightning current measuring device as claimed in claim 2, it is characterized in that: in the hand-held receiving instrument in described rear end, the character type dot matrix lcd module is a serial data interface, and 128 * 64 dot matrix altogether can show the English character and the Chinese character of different dot matrix sizes.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2007101690108A CN100565604C (en) | 2007-12-26 | 2007-12-26 | A kind of lightning current measurement method and device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101690108A CN100565604C (en) | 2007-12-26 | 2007-12-26 | A kind of lightning current measurement method and device |
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| CN101216983A CN101216983A (en) | 2008-07-09 |
| CN100565604C true CN100565604C (en) | 2009-12-02 |
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| CNB2007101690108A Active CN100565604C (en) | 2007-12-26 | 2007-12-26 | A kind of lightning current measurement method and device |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101825654B (en) * | 2010-04-26 | 2011-12-07 | 重庆大学 | Self energy supply lightning current detection system |
| CN102385019B (en) * | 2011-07-28 | 2014-08-06 | 海南电力试验研究所 | Method for distinguishing lightning stroke and non-lightning stroke faults of transmission line |
| CN105467194A (en) * | 2016-01-06 | 2016-04-06 | 苏州华电电气股份有限公司 | Handset for measuring current |
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| WO2001033234A1 (en) * | 1999-11-03 | 2001-05-10 | Vestas Wind Systems A/S | Detector for high intensity electrical currents |
| KR20040032126A (en) * | 2004-03-11 | 2004-04-14 | 야베스텍 주식회사 | Fault Locating System of Lightning for Overhead Transmission Line |
| CN1564002A (en) * | 2004-04-06 | 2005-01-12 | 常州市武进恒昌机械厂 | On-line monitor of lighting arrester |
| CN1721862A (en) * | 2004-07-14 | 2006-01-18 | 深圳锦天乐防雷技术有限公司 | Method and equipment for recording lightning stroke current intensity and occurrence time |
| JP2006351433A (en) * | 2005-06-17 | 2006-12-28 | Chugoku Electric Power Co Inc:The | Transmission line flashover apparatus |
| CN2854618Y (en) * | 2005-12-15 | 2007-01-03 | 马海明 | Remote testing equipment for high voltage transmission line strucked by lightning |
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2007
- 2007-12-26 CN CNB2007101690108A patent/CN100565604C/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001033234A1 (en) * | 1999-11-03 | 2001-05-10 | Vestas Wind Systems A/S | Detector for high intensity electrical currents |
| KR20040032126A (en) * | 2004-03-11 | 2004-04-14 | 야베스텍 주식회사 | Fault Locating System of Lightning for Overhead Transmission Line |
| CN1564002A (en) * | 2004-04-06 | 2005-01-12 | 常州市武进恒昌机械厂 | On-line monitor of lighting arrester |
| CN1721862A (en) * | 2004-07-14 | 2006-01-18 | 深圳锦天乐防雷技术有限公司 | Method and equipment for recording lightning stroke current intensity and occurrence time |
| JP2006351433A (en) * | 2005-06-17 | 2006-12-28 | Chugoku Electric Power Co Inc:The | Transmission line flashover apparatus |
| CN2854618Y (en) * | 2005-12-15 | 2007-01-03 | 马海明 | Remote testing equipment for high voltage transmission line strucked by lightning |
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Owner name: STATE NETWORK ELECTRIC POWER RESEARCH INSTITUTE Owner name: WUHAN NARI CO., LTD., STATE GRID ELECTRIC POWER RE Free format text: FORMER OWNER: WUHAN HIGH VOLTAGE RESEARCH INSTITUTE OF STATE GRID Effective date: 20100702 |
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Effective date of registration: 20100702 Address after: 430074 Hubei Province, Wuhan city Hongshan District Luoyu Road No. 143 Co-patentee after: State Grid Electric Power Research Insititute Patentee after: Wuhan Nari Limited Liability Company of State Grid Electric Power Research Institute Address before: 430074 Hubei Province, Wuhan city Hongshan District Luoyu Road No. 143 Patentee before: Guowang Wuhan High Voltage Inst |
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Effective date of registration: 20160704 Address after: 430074 Hubei Province, Wuhan city Hongshan District Luoyu Road No. 143 Patentee after: Wuhan Nari Limited Liability Company of State Grid Electric Power Research Institute Address before: 430074 Hubei Province, Wuhan city Hongshan District Luoyu Road No. 143 Patentee before: Wuhan Nari Limited Liability Company of State Grid Electric Power Research Institute Patentee before: State Grid Electric Power Research Insititute |