CN1027928C - Thunder and lightning counter for lightning arrester - Google Patents
Thunder and lightning counter for lightning arrester Download PDFInfo
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- CN1027928C CN1027928C CN 92100083 CN92100083A CN1027928C CN 1027928 C CN1027928 C CN 1027928C CN 92100083 CN92100083 CN 92100083 CN 92100083 A CN92100083 A CN 92100083A CN 1027928 C CN1027928 C CN 1027928C
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- lightning
- thunder
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Abstract
The present invention relates to a thunder and lightning counter for a lightning arrester, which is composed of a thunder and lightning sensor (2), a shaping network (3), a silicon bridge switching network (4), a delay control network (5), a secondary shaping amplification network (6) and a counting display network (7) which are orderly connected and communicated by circuits, wherein the annular thunder and lightning sensor (2) is sheathed around the down lead of the lightning arrester in an insulation mode. When lightning occurs, a heavy current pulse formed by lightning discharge is shaped and magnified to be converted to a low current with low voltage by the thunder and lightning sensor (2) to push the counting display network (7). Thus, the time number of lightning strokes to the lightning arrester can be recorded. The thunder and lightning counter has the advantages of no requirement of extra power supply, simple structure, easy installation and accurate counting.
Description
The present invention relates to lightning protection particularly the thunder and lightning used of lightning protection connect the sudden strain of a muscle counting assembly.
For a long time, people adopt the visual plant that traditional lightning rod and lightning arrester protect some to subject to be struck by lightning.But not fool proof reliable by the lightning-protection system that lightning rod and lightning arrester constituted, lightning strike accident happens occasionally, and the reliability that counter can be checked lightning protection system is installed, and provides authentic data for the reason of analyzing the damage to crops caused by thunder accident.Help to improve the design of lightning-protection system.
Known lightning counting device, in Japan, the existing open patent of invention of the Soviet Union.Soviet Union's patent of invention " thunder discharge composite record device " (patent No. No.974316), near the thunderbolt situation in certain zone this invention pick-up unit, can not determine lightning strike spot, (2) pick-up unit is neighbouring owing to artificially discharge (as discharge test, electric welding machine work etc.), may cause misoperation, (3) need the power supply of external power long term maintenance.(patent No.: 190419) belong to meteorological and use instrument, can be used to be recorded in the lightning in its certain space scope, it can not determine lightning strike spot to Soviet Union's patent of invention " lightning meter ", and needs the power supply of external power long term maintenance.Soviet Union's chain store one patent of invention lightening activity registering instrument " (the patent No.: 1335908), belong to meteorological and use instrument, can be used for writing down the lightening activity time-continuing process for information about.The same with " thunder discharge composite record device ", by the induction antenna picked up signal, have the same shortcoming of " thunder discharge composite record device ", may cause misoperation to the experimental simulation thunder discharge.
(patent No.: effect JP60-42680) is a lightening alarm to Japan's patent of invention " thunder sensing device ".It is had in vain and sends signal when thunder goes on can be near device.This invention is not for the record thunder and lightning connects the sudden strain of a muscle number of times, but may be struck by lightning near the early warning.(patent No.: signal JP59-108979) adopts the shunt sampling to obtain to Japan's another patent of invention " thunder and lightning checking device ".Device has being connected of direct electricity with lightning current, and needs to be connected with the external power system, and this connected mode may cause counterattack because earth potential raises in the high-voltage great-current discharge, damage device.Simultaneously, counter need be installed shunt on lightning protection or its downlead, makes complexity and inconvenient is installed.
The present invention's " thunder and lightning counter for lightning arrester " conceives unique, has salient feature and superiority.
The object of the invention is to overcome above-mentioned many shortcomings, and a kind of " thunder and lightning counter for lightning arrester " is provided, and this device need not directly be connected with lightning protection, but is enclosed within around the downlead of lightning protection with insulating, and without additional power source.Simple in structure, easy for installation, have following salient feature and superiority:
(1) thunder and lightning connects the sudden strain of a muscle counter, by its sensor, becomes the little electric current of low-voltage to promote counting assembly the big current conversion that lightning discharge produced, and thunder and lightning connects the sudden strain of a muscle counter does not have being connected of direct electricity with lightning current, and this counter is a complete independent device.
(2) this thunder and lightning arrester has characteristics easy for installation, does not need can install original thunder resisting equipment transformation, does not also influence the lightning protection effect of original lightning-protection system.
Just count when (3) this counter has only thunder-strike current to pass its sensor, therefore, the thunderbolt number of times of its energy accurate recording lightning protection.
(4) at nature, the thundercloud of negative polarity accounts for more than 90%, but still has the positive thundercloud of many parts, and this counter has the advantage that positive and negative thundercloud discharge all can be counted.
(5) nature not only thundercloud polarity positive and negative branch is arranged, and current amplitude is distributed in a very big scope, and (1KA～25KA), this counter can be to big electric current, and little electric current can both accurate counting.Its counting range of current is: 700A to 500KA.
(6) also there is the branch of length the natural lightning discharge duration, and this counter can be to different standard of lightning discharge duration length or non-standard lightning current wave counting, pulsewidth be 1 μ S in the 500ms scope, the equal count enable of counter.
Describe the present invention in detail below in conjunction with accompanying drawing, accompanying drawing 1 is general structure block diagram of the present invention, wherein (1) is the lightning protection downlead, (2) be sensor of thunder and lightning, (3) are shaping network, and (4) are silicon bridge converter, (5) be delay controller, (6) be secondary rectification amplifier, (7) are counting display, are connected from front to back successively by (2) to (7) between them, when lightning current passes through lightning protection downlead (1) once, be that lightning protection connects sudden strain of a muscle once, counter shows 1, and thunder and lightning hits (1) once again, counter then shows 2, by that analogy, thunder and lightning whenever hits lightning protection once, and the counting demonstration accumulates 1.The principle of work of this counter is as follows: when (1) passes through big electric current, (1) electromagnetic field that changes on every side, sensor (2) therefore obtains induced signal and exports a less current voltage signal, and this signal is a pulse signal, and its polarity is decided on the positive and negative of lightning current polarity.After (3) shaping, pulse signal becomes pulse stably and is input to (4), network (4) becomes this pulse stably the pulse of constant polarity, with this pulse deactivation impulse time delay network (5), after time-delay network (5) starts, send the pulse of certain pulsewidth, this pulse is counted with amplifying network (6) secondary reshaping and amplify rear drive calculating to finish once with display network (7) through secondary reshaping.
Accompanying drawing 2 is from integral type sensor,
Accompanying drawing 3 is outer integral form sensor,
Wherein (8) are inductive coil, and R is a resistance, and C is an electric capacity.
Sensor of thunder and lightning (2) has two effects: the first provides necessary voltage and electric current for counter; It two is that counter and thunder-strike current are separated, and the sensor that is made of inductive coil can be that the ring-type linear response coil of wire also can be the non-linear response coil of wire.The induction coil of wire divide again from integral form with outside integral form, its principle and equivalent loop are shown in Fig. 2,3, the number of turn of sensor can be selected according to the design in follow-up loop.
Sensor is enclosed in the can, can avoid on the one hand stray electric field to disturb, and unlikelyly causes misoperation, can protect sensor to make it not damage because of being in rugged surroundings on the other hand again.Two output terminals of sensor are received the input end of shaping network (3).
The effect of silicon bridge converter (4) is the waveform that the plus or minus waveform transformation is become constant polarity.
Principle:
When first pulse of silicon bridge converter (4) arrives, K switch closure, C
2Charging is after pulse, and K disconnects, C
2Pass through R
2Discharge, discharge time constant is R
2, C
2, the length of time-delay can be used R
2C
2And R
3C
3Value determine.Counting is only just counted once at a complete delay pulse with showing (7).If once height appears repeatedly shaking in thunderbolt, the time is very short between second arteries and veins of silicon bridge converter (4) and first pulse so, and the time-delay of first pulse does not at this moment finish, second pulse continues to make it time-delay, two pulse delays are overlapping, finish up to time-delay, and just counting once.Prevented like this that once thunderbolt causes repeat count because of vibration repeatedly, and ought two for preventing counting error, the present invention can adjust R more in short-term the time between the lightnings
2C
2And R
3C
3Value determine the impulse time delay time, and reach the purpose of accurate counting, the output terminal access power of delay controller (5) amplifies network (6), power amplification network (6) is actually a high input impedance circuit, and its input value is not less than 100K Ω, and function is that the prime signal is amplified, make it promptly not influence the work of previous stage, for next stage provides enough energy, its formation can be a triode type emitter following amplifying circuit, also can replace with metal-oxide-semiconductor simultaneously.
Entering counting through power amplification network (6) amplifying signal counts and shows with display network (7).
In sum, principle of work of the present invention and process are:
When lightning protection downlead (1) among Fig. 1 when flowing through lightning current, downlead (1) electromagnetic field that changes on every side, in sensor of thunder and lightning (2), induce certain electric current and voltage, after this signal process shaping network (3) shaping, convert the pulse signal of a constant polarity to by pulses switch network (4), Let it Be starts the K switch of delay controller (5), delay controller (5) will produce desired width pulse after starting, this width can satisfy counting display (7) and move the needed time, and current oscillation causes repeat count in the time of also preventing counter because of thunderbolt.Pass through secondary rectification amplifier (6) again and obtain enough power, to promote counting and display (7), after the time-delay of delay controller (5) had been arrived, counting process finished, and finishes whole counting process.
Embodiment
Design a lightning protection with connecing the sudden strain of a muscle counter by the described The general frame of Fig. 1, wherein sensor of thunder and lightning adopts shown in Figure 2ly from the integral form linear response coil of wire, and its number of turn is 20 circles, circle diameter 80mm, the radial section diameter 10mm of ring is 52 Ω from integrating resistor R.Reshaper is made of pressure-active element and resistance, about 10 Ω of resistance.Voltage dependent resistor (VDR) voltage is 6V, and pulse detection adopts silicon bridge to realize, the time-delay Control Network adopts circuit shown in Figure 5, and wherein K switch replaces with thyristor, capacitor C
1, C
2, C
3Use terylene electric capacity, C
1About 0.1 μ f, C
2About 0.3 μ f.C
3About 0.3 μ f, R
2R
3Be 2M Ω, R
1Approximate number+K Ω was delayed time about 1 second like this, and power amplification adopts metal-oxide-semiconductor as amplification, the about 80mA of amplified current, and it enough promotes the electromagnetic type counting and the display of back.
Claims (3)
1, a kind of by sensor of thunder and lightning (2), the thunder and lightning counter for lightning arrester that counting display (7) is formed, it is characterized in that its composition also comprises shaping network (3), silicon bridge converter (4), delay controller (5), secondary rectification amplifier (6), circuit is connected from front to back successively by (2) to (7) and communicates between them, wherein sensor of thunder and lightning (2) is formed for the ring-type inductive coil, be enclosed within lightning protection downlead (1) on every side with handing over insulation, shaping network (3) is the voltage shaping network, and delay controller (5) is the RC circuit, and power amplification network (6) is the main anti-main anti-amplifying circuit of height input that is not less than 100K Ω of input.
2, connecing the sudden strain of a muscle counter by the described thunder and lightning of claim 1, it is characterized in that described sensor of thunder and lightning (2) can be from integral type sensor, also can be outer integral form sensor.
3, connect the sudden strain of a muscle counter by the described thunder and lightning of claim 1, it is characterized in that described shaping network (3) is a kind ofly to have the responsive semiconductor of comparing function and differential concatenation and the shaping network that resistance constitutes by two, also can be a kind of shaping network that is made of in voltage dependent resistor (VDR) r and the resistance R of 1～50V the voltage-sensitive value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92100083 CN1027928C (en) | 1992-01-15 | 1992-01-15 | Thunder and lightning counter for lightning arrester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92100083 CN1027928C (en) | 1992-01-15 | 1992-01-15 | Thunder and lightning counter for lightning arrester |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1074540A CN1074540A (en) | 1993-07-21 |
| CN1027928C true CN1027928C (en) | 1995-03-15 |
Family
ID=4938354
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92100083 Expired - Fee Related CN1027928C (en) | 1992-01-15 | 1992-01-15 | Thunder and lightning counter for lightning arrester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1027928C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1295909C (en) * | 2003-05-28 | 2007-01-17 | 广东省科技干部学院 | Lightning protection detector for intelligent microwave base station |
| KR101182596B1 (en) * | 2010-12-28 | 2012-09-18 | 주식회사 성진테크윈 | Apparatus and Method for displaying life of a surge protector |
| CN103901302B (en) * | 2014-03-25 | 2016-08-24 | 国网吉林省电力有限公司电力科学研究院 | A kind of to series gap leakage conductor state online test method and device |
| CN105738787A (en) * | 2016-04-19 | 2016-07-06 | 国网辽宁省电力有限公司鞍山供电公司 | Insulated breakdown passive alarming and monitoring device for 10-kv lightning arrester |
| CN110907689A (en) * | 2019-11-22 | 2020-03-24 | 宁夏中科天际防雷检测有限公司 | Complete passive high sensitivity intelligence thunder meter |
| CN111896795B (en) * | 2020-07-16 | 2023-01-03 | 中国人民解放军陆军工程大学 | Cloud lightning current waveform measuring method and system |
-
1992
- 1992-01-15 CN CN 92100083 patent/CN1027928C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN1074540A (en) | 1993-07-21 |
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