CN103278678A - Lightning overvoltage measuring system - Google Patents
Lightning overvoltage measuring system Download PDFInfo
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- CN103278678A CN103278678A CN2013101822634A CN201310182263A CN103278678A CN 103278678 A CN103278678 A CN 103278678A CN 2013101822634 A CN2013101822634 A CN 2013101822634A CN 201310182263 A CN201310182263 A CN 201310182263A CN 103278678 A CN103278678 A CN 103278678A
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Abstract
The invention provides a lightning overvoltage measuring system, which comprises a lightning overvoltage sensor, a high-speed data acquiring and processing unit and a solar power supply system, wherein the lightning overvoltage sensor is realized by adopting a high-speed capacitive voltage divider, and can be used for acquiring instantaneous voltage during lightning overvoltage through the operation of the high-speed capacitive voltage divider; the high-speed data acquiring and processing unit is used for acquiring a low-voltage signal from the lightning overvoltage sensor; the low-voltage signal is firstly subjected to analog-digital conversion through an analog-digital converter, and is buffered in a buffer; a processor is used for reading data in the buffer for processing. The solar power supply system can be used for providing energy for the lightning overvoltage measuring system without connecting a general alternating-current power grid power supply, and the influence of measuring high voltage generated by lightning on an alternating-current power grid is avoided.
Description
Technical field
The present invention relates to the technical field of lightning monitoring, particularly relate to a kind of lightning surge measuring system.
Background technology
According to incompletely statistics, China reaches 3000～4000 people every year because thunderbolt causes casualties, and property loss reaches surprising 20,000,000,000 yuan especially, and the thunder and lightning disaster has become one of meteorological disaster that destructiveness is on the rise.The electro-magnetic transient phenomenon that thunder and lightning brings belongs to the electromagnetic pollution scope, and electromagnetic pollution is the universally acknowledged the fourth-largest pollution after water pollution, atmospheric pollution, noise pollution.Modernization along with industrial and agricultural production and people's lives, also more and more higher to service systems such as railway, aviation, finance, electric power, telecommunications, TV, network and facility reliability and quality of service requirement, mankind's activity is also increasing to these utility dependences, lightning protection is had higher requirement, therefore accurate measurement of lightning surge seemed more and more important.
Angle from electric system, thunder and lightning has become the main reason of electric power system fault, no matter be circuit, transformer station or consumer, the impact that how to make them can resist the electromagnetic transient that thunder and lightning and lightning induction produce better is the problem of being concerned about the most in the electric system lightning protection, this need be based upon that parameters to the discharge process of thunder and lightning and lightning surge has fully realizing and the basis understood on.
The research to the lightning surge characteristic parameter at present mostly relies on simulation and method of emulation, and to the lightning surge characteristic parameter of power transmission and distribution, comprises that waveform, amplitude, rise time, duration etc. all lack real data.How can obtain real lightning surge data, this research for the understanding of thunder discharge process and lightning surge and spatial field thereof is all very meaningful.
Summary of the invention
At the technical matters that can't accurately measure for lightning surge that exists in the above-mentioned background technology, the invention provides a kind of lightning surge measuring system, can measure exactly the lightning surge that thunderbolt causes, obtain lightning surge measurement data accurately.
A kind of lightning surge measuring system, comprise the lightning surge measurement mechanism, described lightning surge measurement mechanism comprises lightning surge sensor, high-speed data acquisition processing unit, solar electric power supply system, and described high-speed data acquisition processing unit is connected with described lightning surge sensor and described solar electric power supply system; Described lightning surge sensor is the high speed capacitive divider, described high-speed data acquisition processing unit comprises processor, analog to digital converter, buffer and control circuit, described processor connects described analog to digital converter by described buffer, and described analog to digital converter connects described lightning surge sensor; Described processor connects described control circuit, and described control circuit connects described lightning surge sensor.
Compared with prior art, the lightning surge sensor that lightning surge measuring system of the present invention arranges adopts the high speed capacitive divider to realize, it is by the operation of high speed capacitance partial pressure, the transient voltage in the time of can collecting lightning surge.Because the lightning surge amplitude is often very high, basic is kV magnitudes up to a hundred, and rising edge often has only hundreds of ns to a few μ s, so the change in voltage situation when using the high speed capacitive divider to detect lightning surge preferably, the high voltage signal of thunder and lightning being crossed generation is converted to low voltage signal.Described high-speed data acquisition processing unit obtains described low voltage signal from described lightning surge sensor, at first pass through the analog to digital conversion of described analog to digital converter, buffer memory in described buffer then, the data that processor reads in the described buffer are handled then.Described solar electric power supply system can provide the energy for lightning surge measuring system of the present invention, need not to connect general AC network power supply, avoids measuring the high voltage of thunderbolt generation to the influence of AC network.
Description of drawings
Fig. 1 is the structural representation of lightning surge measuring system of the present invention;
Fig. 2 is the structural representation of the high-speed data acquisition processing unit of lightning surge measuring system of the present invention;
Fig. 3 is the structural representation of a kind of preferred implementation of lightning surge measuring system of the present invention;
Fig. 4 is the structural representation of a kind of preferred implementation of front end monitor terminal of lightning surge measuring system of the present invention.
Embodiment
See also Fig. 1, Fig. 1 is the structural representation of lightning surge measuring system of the present invention.
Described lightning surge measuring system comprises: lightning surge measurement mechanism 10, described lightning surge measurement mechanism 10 comprises lightning surge sensor 11, high-speed data acquisition processing unit 12, solar electric power supply system 13, and described high-speed data acquisition processing unit 12 is connected with described lightning surge sensor 11 and described solar electric power supply system 13;
Described lightning surge sensor 11 is the high speed capacitive divider.
See also Fig. 2, Fig. 2 is the structural representation of the high-speed data acquisition processing unit of lightning surge measuring system of the present invention.
Described high-speed data acquisition processing unit 12 comprises processor 121, analog to digital converter 122, buffer 123 and control circuit 124, described processor 121 connects described analog to digital converter 122 by described buffer 123, and described analog to digital converter 122 connects described lightning surge sensor 11; Described processor 121 connects described control circuit 124, and described control circuit 124 connects described lightning surge sensor 11.
Compared with prior art, lightning surge measuring system of the present invention is provided with the lightning surge sensor, be provided with the lightning surge sensor, described lightning surge sensor adopts the high speed capacitive divider to realize, it is by the operation of high speed capacitance partial pressure, the transient voltage in the time of can collecting lightning surge.Because the lightning surge amplitude is often very high, basic is kV magnitudes up to a hundred, and rising edge often has only hundreds of ns to a few μ s, so the change in voltage situation when using the high speed capacitive divider to detect lightning surge preferably, the high voltage signal of thunder and lightning being crossed generation is converted to low voltage signal.Described high-speed data acquisition processing unit obtains described low voltage signal from described lightning surge sensor, at first pass through the analog to digital conversion of described analog to digital converter, buffer memory in described buffer then, the data that processor reads in the described buffer are handled then.Described solar electric power supply system can provide the energy for lightning surge measuring system of the present invention, need not to connect general AC network power supply, avoids measuring the high voltage of thunderbolt generation to the influence of AC network.
Described lightning surge sensor 11 adopts the high speed capacitive divider, by electromagnetic coupled big lightning surge is converted into low voltage signal.Bandwidth, range are big, can be used in the lightning surge of actual measurement transmission and distribution line line pole tower.
The voltage signal that 12 pairs of capacitive dividers of described high-speed data acquisition processing unit are coupled out carries out high speed acquisition, guarantees integrality and the degree of accuracy of signal.
And in the highfield environment of high voltage, big electric current, monitoring devices such as microprocessor, computing machine and network based on microelectronic circuits often are subjected to influences such as strong electromagnetic radiation, lightning impulse, the harmonious wave interference of high frequency noise, cause that system reliability reduces, gently then cause the system works characteristic to descend or produce misoperation, heavy then system's " deadlock ".
Therefore, in one embodiment, described high-speed data acquisition processing unit 12 also comprises shielding box, and described processor 121, analog to digital converter 122, buffer 123 and control circuit 124 all are arranged in the described shielding box.
Further, described lightning surge measurement mechanism 10 also can arrange the double layer screen line, and described high-speed data acquisition processing unit 12 connects described lightning surge sensor 11 by described double layer screen line.
Described double layer screen line comprises internal shield and external shielding layer, and described external shielding layer is the end ground connection near measured insulator, and described internal shield is the end ground connection near described lightning surge sensor 11.
In one embodiment, the signal that all expose in the described lightning surge measurement mechanism 10 transmits lead and all adopts the double layer screen line, wherein, the external shielding layer of described double layer screen line is the iron head ground connection near tower insulation, and internal shield is pick-up unit position ground connection.Except the minority sensor, whole described high-speed data acquisition processing unit 12 all places fully the shielding box of shielding, and for the input interface of sensor, has also adopted antiseepage, measure such as anti-tampering, guarantees the reliability of interface.The system works environment also exists high-intensity magnetic field to disturb except the highfield interference is arranged, so the method that the signal that system adopts the double layer screen line to introduce especially to collect and shielding box internal layer are isolated prevents that high-intensity magnetic field from disturbing.
In one embodiment, described solar electric power supply system 13 comprises solar panel and accumulator, and described solar panel connects described accumulator, and described accumulator connects the power input of described high-speed data acquisition processing unit 12.The power supply mode that described solar electric power supply system 13 adopts solar panel accumulator to be carried out floating charge, in one embodiment, further adopt the microprocessor monitors module that sun power and accumulator are carried out real-time monitoring, discharge and recharge control in strict accordance with the charging and discharging of accumulator family curve, prolonged the serviceable life of accumulator greatly.
In one embodiment, described accumulator adopts 12V, 103Ah accumulator, and described solar panel adopts the solar panel of 4 combinations to constitute, and its power is 120W.Even described 12V, 103Ah accumulator can guarantee also that under the situation of continuous 30 days no sunlight system normally moves, add 4 solar panels that amount to 120W after, sufficient energy can be provided for the long-term operation of system.
See also Fig. 3, Fig. 3 is the structural representation of a kind of preferred implementation of lightning surge measuring system of the present invention.
The described lightning surge measuring system key distinction of present embodiment is that it also comprises front end monitor terminal 20 and backstage main station system 30.
See also Fig. 4, Fig. 4 is the structural representation of a kind of preferred implementation of front end monitor terminal of lightning surge measuring system of the present invention.
Described front end monitor terminal 20 comprises: lightning wave pick-up transducers 21, main processor unit 22, communication module 23 and power supply unit 24;
Described lightning wave pick-up transducers 21 connects described high-speed data acquisition processing unit 12, the lightning wave signal of gathering is transferred to described main processor unit 22, described Main Processor Unit 22 connects described lightning wave pick-up transducers 21, described communication module 23 and described supply module 24,22 pairs of described lightning wave signals of described Main Processor Unit are handled, described lightning wave signal after handling is transferred to described communication module 23, and described communication module 23 is sent to described backstage main station system 30 with described lightning wave signal.
Described front end monitoring terminal 20 is preferably mounted on the overhead line structures, and pick-up transducers data, described communication module 23 preferably are sent to described backstage main station system 30 on Internet by GPRS network with described lightning wave signal.Described communication module 23 is located synchronously by the GPS device, determines time and the address of thunder and lightning signal, utilizes GPRS to carry out the wireless data transmission.
Described backstage main station system 30 receives described lightning wave signal by network, and carries out the lightning surge analysis monitoring according to described lightning wave signal.
Wherein, on the described backstage main station system 30 the analysis expert control system is set.
Described analysis expert control system comprises: data reception module is used for receiving the described lightning wave signal by the network transmission; Waveform is checked module, is used for the waveform according to the lightning wave mux--out signal exhibits lightning wave signal that receives.The operating system of described analysis expert control system can be selected operating systems commonly used such as Windows XP for use.
Can set up circuit, shaft tower archives by the analysis expert control system; Carry out thunder and lightning waveform and parameter query thereof.All clients can be landed described analysis expert control system at any time data are wherein carried out various inquiries, browse, print, filed.
Lightning surge measuring system of the present invention comprises data collection station layer, base station communication layer, analysis expert control system layer.Described data collection station layer comprises lightning surge sensor 11, high-speed data acquisition processing unit 12, solar electric power supply system 13; Described base station communication layer comprises front end monitor terminal 20 and backstage main station system 30; Described analysis expert control system layer is the analysis expert control system that is installed in the described backstage main station system 30.
This data collection station layer is converted into weak electric signal to lightning surge by simulation monitoring equipment, finishes the high speed of signal and accurately gathers, and guarantee the power supply safety of total system.
The front end monitoring terminal of base station communication layer is installed on the overhead line structures, and the pick-up transducers data are sent to backstage main station system on Internet by GPRS network.
This backstage main station system is the lightning surge waveform signal that records for long-range receiving system, and system is carried out Long-distance Control, guarantees system stable operation.
Described backstage main station system can pass through human-computer interaction interface, menu operation is provided, formed by pull-down menu and pop-up menu, realize man-machine exchange by menu, analysis expert control system wherein is the lightning surge waveform signal that records for long-range reception, and system carried out Long-distance Control, guarantee system stable operation.
Compared with prior art, the present invention also has following beneficial effect:
(1) reliability and stability: have enough antijamming capabilities and automatic recovery ability, guarantee measuring system and the reliable and stable operation of communication network;
(2) extensibility: hyperchannel lightning surge measuring system is passed through wireless communication, be not subjected to the influence of electrical network scale, can hyperchannel lightning surge measuring system be installed in different places as required, can expand monitoring system easily.
(3) simple ease for use: the expert system friendly interface is understandable, and is easy and simple to handle, and managerial personnel just can recognize the lightning surge characteristic parameter in time, exactly in office.
(4) maintainability: the system's peacekeeping state self-checking function that provides by system, running status that can long distance control system as the solar cell output voltage, is convenient to the maintenance of system.
(5) real-time: wireless network passes through GPRS network, wide coverage, and signal quality is guaranteed, can guarantee the real-time of telecommunication, and status information of equipment and lightning surge waveform parameter can reflect in software systems in real time accurately.
The above embodiment has only expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to claim of the present invention.Should be pointed out that for the person of ordinary skill of the art without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (8)
1. lightning surge measuring system, it is characterized in that, comprise the lightning surge measurement mechanism, described lightning surge measurement mechanism comprises lightning surge sensor, high-speed data acquisition processing unit, solar electric power supply system, and described high-speed data acquisition processing unit is connected with described lightning surge sensor and described solar electric power supply system;
Described lightning surge sensor is the high speed capacitive divider, described high-speed data acquisition processing unit comprises processor, analog to digital converter, buffer and control circuit, described processor connects described analog to digital converter by described buffer, and described analog to digital converter connects described lightning surge sensor; Described processor connects described control circuit, and described control circuit connects described lightning surge sensor.
2. lightning surge measuring system as claimed in claim 1, it is characterized in that, described solar electric power supply system comprises solar panel and accumulator, and described solar panel connects described accumulator, and described accumulator connects the power input of described high-speed data acquisition processing unit.
3. lightning surge measuring system as claimed in claim 2 is characterized in that, described accumulator adopts 12V, 103Ah accumulator, and described solar panel adopts the solar panel plate of 4 combinations to constitute, and its power is 120W.
4. lightning surge measuring system as claimed in claim 1 is characterized in that, described high-speed data acquisition processing unit also comprises shielding box, and described processor, analog to digital converter, buffer and control circuit all are arranged in the described shielding box.
5. lightning surge measuring system as claimed in claim 4 is characterized in that, described lightning surge measurement mechanism also comprises the double layer screen line, and described high-speed data acquisition processing unit connects described lightning surge sensor by described double layer screen line.
6. lightning surge measuring system as claimed in claim 5, it is characterized in that, described double layer screen line comprises internal shield and external shielding layer, and described external shielding layer is the end ground connection near measured insulator, and described internal shield is the end ground connection near described lightning surge sensor.
7. lightning surge measuring system as claimed in claim 1 is characterized in that, described lightning surge measuring system also comprises front end monitor terminal and backstage main station system;
Described front end monitor terminal comprises: lightning wave pick-up transducers, main processor unit, communication module and power supply unit;
Described lightning wave pick-up transducers connects described high-speed data acquisition processing unit, the lightning wave signal of gathering is transferred to described main processor unit, described Main Processor Unit connects described lightning wave pick-up transducers, described communication module and described supply module, described Main Processor Unit is handled described lightning wave signal, described lightning wave signal after handling is transferred to described communication module, and described communication module is sent to described backstage main station system with described lightning wave signal.
8. lightning surge measuring system as claimed in claim 7 is characterized in that, described communication module is sent to described backstage main station system by GPRS network with described lightning wave signal.
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| CN2013101822634A CN103278678A (en) | 2013-05-16 | 2013-05-16 | Lightning overvoltage measuring system |
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| CN2013101822634A CN103278678A (en) | 2013-05-16 | 2013-05-16 | Lightning overvoltage measuring system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104793038A (en) * | 2015-04-20 | 2015-07-22 | 清华大学 | All-optical overvoltage monitoring device for electric power system |
| CN105301339A (en) * | 2014-06-04 | 2016-02-03 | 长沙群瑞电子科技有限公司 | Thunder residual voltage monitor |
| CN106872866A (en) * | 2017-03-10 | 2017-06-20 | 中国南方电网有限责任公司超高压输电公司曲靖局 | The equal properties of flow test system of lightning arrester connected in parallel |
| CN108535536A (en) * | 2018-05-02 | 2018-09-14 | 湖南中车时代通信信号有限公司 | A kind of the train operating mode voltage collection circuit and method of full-time self-test |
| CN110858726A (en) * | 2018-08-22 | 2020-03-03 | 西安西电高压开关有限责任公司 | Remote acquisition module box and energy supply method thereof |
| CN113702787A (en) * | 2021-09-15 | 2021-11-26 | 广东电网有限责任公司 | Method and device for detecting insulated wire of low-voltage line |
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| CN105301339A (en) * | 2014-06-04 | 2016-02-03 | 长沙群瑞电子科技有限公司 | Thunder residual voltage monitor |
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| CN110858726A (en) * | 2018-08-22 | 2020-03-03 | 西安西电高压开关有限责任公司 | Remote acquisition module box and energy supply method thereof |
| CN110858726B (en) * | 2018-08-22 | 2022-04-26 | 西安西电高压开关有限责任公司 | Remote acquisition module box and energy supply method thereof |
| CN113702787A (en) * | 2021-09-15 | 2021-11-26 | 广东电网有限责任公司 | Method and device for detecting insulated wire of low-voltage line |
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Application publication date: 20130904 |