CN108445315A - A kind of algorithm of zinc oxide lightning protection device service life - Google Patents
A kind of algorithm of zinc oxide lightning protection device service life Download PDFInfo
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- CN108445315A CN108445315A CN201810143355.4A CN201810143355A CN108445315A CN 108445315 A CN108445315 A CN 108445315A CN 201810143355 A CN201810143355 A CN 201810143355A CN 108445315 A CN108445315 A CN 108445315A
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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Abstract
A kind of algorithm of zinc oxide lightning protection device service life, 1, inductive lightning electric current lightning protection device data in power line are collected by Rogowski coil, integrator, microcontroller；2, induced current data obtained by the nominal discharge current of lightning protection device and the 1st step are added；3, the current coefficient evidence divided by second step the data obtained when lightning current is occurred are as the index of power in the 4th step；4, it is bottom, using the data of the 3rd step as the power of index that lightning current number of shocks compensation factor, which is multiplied by using e, 5, the 4th step is obtained into the service life that data subtract lightning protection device lightning current impact service life offset to get the lightning protection device under being impacted in a certain induced current；5, under the impact of composite sensing lightning current, the number of lightning protection device being struck by lightning, the service life also referred to as passed are obtained using average weighted method；6, the service life that passes for finally subtracting lightning protection device with 20 just obtains the remaining life number of lightning protection device.
Description
Technical field
The present invention relates to computational methods field, especially a kind of algorithm of zinc oxide lightning protection device service life.
Background technology
Existing lightning protection device（Also known as arrester, Surge Protector, surge protector etc.）In practical application, there are no one kind
Technology can carry out early warning to performance state, can only be alerted after lightning protection device damage, then be replaced.In fact,
The mode of this post-processing is danger close for the important field of lightning protection, such as the use occasions such as military affairs, chemical industry, electric power,
After lightning protection device damage, the electric utility protected through lightning protection device can be caused to can not work normally, in turn resulted in follow-up inestimable
Serious consequence.In existing technology, there are no a kind of computational methods to calculate the service life of lightning protection device.Based on upper
It states, a kind of lightning protection device operating state data that basis usually acquires is provided and is calculated, then according to result of calculation, obtains lightning protection
Device remaining life is replaced close to before the final service life of lightning protection device, and prevent from protecting it electrically sets
Applying the lightning protection device service life computational methods that normal work impacts seems particularly necessary.
Invention content
In order to overcome in existing technology, the service life of lightning protection device can be calculated without a kind of computational methods,
Lightning protection device service life can not effectively grasp its state before expiring, and expire in lightning protection device service life, lightning current occurs act on
When lightning protection device, the drawbacks of electric utility protected through lightning protection device can be caused to can not work normally, the present invention provides in conjunction with thunder and lightning
Flow collecting device（Lightning current collecting device is acted on anti-using the acquisition lightning current such as Rogowski coil, integrating circuit, one-chip computer module
The various data of thunder device, data can be transferred to remote side administration side, the application by GPRS module through mobile radio network after acquisition
The patent application " devices and lightning protection device method for analyzing performance of acquisition lightning protection device data " that people submits on the same day in the application, has in detail
The thin operation principle for describing lightning current collecting device）A period of time lightning current of acquisition acts on the various induction lightenings of lightning protection device
The data such as size, number are flowed as basis is calculated, and lightning protection device service life calculating are carried out using the formula of original creation, to be final
Show that the lightning protection device remaining service life provides a kind of algorithm of zinc oxide lightning protection device service life of valid data support.
The technical solution adopted by the present invention to solve the technical problems is：
A kind of algorithm of zinc oxide lightning protection device service life, 1, it will be incuded in power line by Rogowski coil, integrator, microcontroller
Thunder and lightning flow data collects, and 2, induced current data obtained by the nominal discharge current of lightning protection device and the 1st step are added；3,
Current coefficient evidence divided by second step the data obtained when lightning current is occurred is as the index of power in the 4th step；4, lightning current is rushed
It is bottom, using the data of the 3rd step as the power of index to hit number compensation factor and be multiplied by using e, 5, the 4th step is shown that data subtract lightning protection device
Lightning current impact service life offset is to obtain the service life of the lightning protection device in the case where a certain induced current is impacted；5, in composite sensing thunder
Under the impact of electric current, the number of lightning protection device being struck by lightning is obtained using average weighted method, what is also referred to as passed makes
Use the service life；6, the service life that passes for finally subtracting lightning protection device with 20, just obtains the remaining life of lightning protection device, is presented as mark
Claim the number that can also be born under rush of current.
The various data of the inductive lightning electric current lightning protection device of the lightning current collecting device acquisition, including act on lightning protection device
Induction lightening intensity of flow, lightning current effect number, local temperature data.
Present invention has the advantages that：In present invention application, in conjunction with lightning current collecting device（Lightning current collecting device uses sieve
The acquisition inductive lightning electric current such as family name's coil, integrating circuit, one-chip computer module acts on the various data of lightning protection device, and data can after acquisition
By GPRS module remote side administration side, the patent application that the applicant submits on the same day in the application are transferred to through mobile radio network
" devices and lightning protection device method for analyzing performance of acquisition lightning protection device data " have the work for describing lightning current collecting device in detail former
Reason）The lightning current of acquisition acts on the data such as various induction lightening intensity of flow, number and the environment temperature of lightning protection device as calculating
Basis carries out lightning protection device service life calculating using the formula of original creation, the service life is passed to obtain lightning protection device, finally to obtain
Finally the remaining service life provides valid data support to lightning protection device, and in actual use, representative lightning current after calculating is impacted lightning protection
The service life is passed after device lightning protection device into row-column list classification, is intuitively given under various representative intensity of lightning current, lightning protection device passes the longevity
Life, administrative staff subsequently act on the various data of lightning protection device according to acquisition inductive lightning electric current, you can by the way that lightning protection is calculated
Device remains service life, and carrying out replacement in time to the lightning protection device that will reach service life according to result for administrative staff provides
Valid data support, it is therefore prevented that after lightning protection device will reach service life, without replacing the electricity for causing to protect through lightning protection device in time
Gas facility can not work normally.Based on above-mentioned, so the application prospect that the present invention has had.
Description of the drawings
The present invention is described further below in conjunction with drawings and examples.
Fig. 1 is the structural schematic diagram of induction lightening flow data collecting device in power line of the present invention
Fig. 2 is calculation process block diagram of the present invention.
Specific implementation mode
Shown in Fig. 1, the lightning current signals that Rogowski coil 1 incudes when acquisition thunder and lightning occurs in real time on power circuit 2, and
It is input to 3 signal input part of integrator, integrating circuit 3 is input to 4 signal input part of one-chip computer module, monolithic after adjusting signal
Machine module 4 will input analog signal and be converted to digital signal, after digital signal acquiring, that is, complete induction lightening fluxion in power line
According to acquisition.
Such as：The x of N=4 exp [45.33/ (30+10)]=3.4 ≈ 3 as Io=10KA, I=30
The x of N=4 exp [45.33/ (25+10)]=5.64 ≈ 6 as Io=10KA, I=25
The x of N=4 exp [45.33/ (20+10)]=9.12 ≈ 9 as Io=10KA, I=20
Example 1：In the case of non-composite, that is, same intensity inductive lightning rush of current, show that lightning protection device uses the longevity in conjunction with above table
Life, if dash current be respectively 40KA, 39KA, 38KA ... the service life of 3KA, 2KA, 1KA etc. be N40, N39,
N38 ... N3, N2, N1 N40=1 as seen from table, N39=1 ... N2=165, N1=237.Example 2：Under integrated sensor cable lightning current,
The 3KA assuming that 40KA, 39KA ..., 2KA, the number of lightning strokes in the case of 1KA difference inductive lightning electric currents are door M40, M39 ... .M3, M2,
M1 etc., the then service life passed are
Np=20(M40/N40+M39/N39+…M3/N3+M2/N2+M1/N1)
Remaining life is
N=20(1-M40/N40-M39/N39-…M3/N3-M2/N2-M1/N1)
Result of calculation N >=0, N<When 0, then lightning protection device is considered as damage.In formula：20 is nominal for the definition of national standard lightning protection device service life
Numerical value under discharge current.
Example 3：In the case of composite impact lightning current, obtains lightning protection device remaining life in conjunction with above table, pass through weighting
It calculates, the service life passed being converted under nominal discharge current, and obtains the remaining service life of lightning protection device.
When 30 degree of environment temperature, then experiment measures KT=45.33（Kilo-ampere）, NS=4 time, No=9, then as Io=10KA,
The service life that lightning protection device passes be Ny=20 (M40+M39+M38/2+ ...+M3/122+M2/165+M1/237), result of calculation NP≤
20 be normal, NP>20 are considered as lightning protection device damage；
Then remaining life is Ns=20x (1-M40-M39-M38/2- ...-M3/122-M2/165-M1/237) result of calculation
Ns>0, normal Ns≤0 of lightning protection device is considered as lightning protection device damage.
Such as：As M25=3, M8=10, when other M values are all zero, because of N25=6, M8=40
N=20（1-3/6-10/40）=5 times.
This section is that the definition of national standard lightning protection device service life is nominal：From standard GB/T 11032-2010《AC gapless gold
Belong to oxide lightning protection device》In type approval test, 8.5.4.1 preparation property test determinations：In preparation property experiment, test product should be subjected to 20 times
8/20us lightning impulse currents, peak value are equal to lightning protection device nominal discharge current；Here 8/20us is exactly inductive lightning electric current
Actual waveform；The service life of namely product is exactly, under the impact of the nominal discharge current electric current of 8/20us forms, lightning protection
The tolerable number of device is not less than 20 times；Industry universal standard is service life 20 times.
In present invention application, the various thunders and lightnings that lightning protection device is acted in conjunction with the lightning current that lightning current collecting device acquires are strong
Degree, the corresponding data such as number and local temperature carry out lightning protection device service life meter as basis is calculated using the formula of original creation
It calculates, to show that the lightning protection device remaining service life provides valid data support to be final；In actual use, by calculated different thunders
Service life in the case of rush of current lightning protection device is sorted out into row-column list, is intuitively given under various representative intensity of lightning current,
The service life of lightning protection device, administrative staff subsequently act on the various data of lightning protection device according to the lightning current of acquisition, you can pass through
Lightning protection device remaining life is calculated, for administrative staff according to result to will reach service life lightning protection device carry out and
Shi Genghuan provides valid data support, it is therefore prevented that after lightning protection device reaches service life, is caused through lightning protection device without replacing in time
The electric utility of protection can not work normally.Based on above-mentioned, so the application prospect that the present invention has had.
The basic principles and main features and advantages of the present invention that the present invention has been shown and described above, for this field skill
For art personnel, it is clear that the present invention is limited to the details of above-mentioned exemplary embodiment, and in the spirit or base without departing substantially from the present invention
In the case of eigen, the present invention can be realized in other specific forms.It therefore, in all respects, should all be by reality
Apply example and regard exemplary as, and be non-limiting, the scope of the present invention by appended claims rather than above description
It limits, it is intended that all changes that come within the meaning and range of equivalency of the claims are included within the present invention.
Any reference signs in the claims should not be construed as limiting the involved claims.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiment being appreciated that.
Claims (3)
1. a kind of algorithm of zinc oxide lightning protection device service life, it is characterised in that 1, it is incited somebody to action by Rogowski coil, integrator, microcontroller
Induction lightening flow data collects in power line, and 2, by induced current obtained by the nominal discharge current of lightning protection device and the 1st step
Data are added；3, the current coefficient evidence divided by second step the data obtained when lightning current is occurred are as the index of power in the 4th step；
4, it is bottom, using the data of the 3rd step as the power of index that lightning current number of shocks compensation factor, which is multiplied by using e, 5, the 4th step is obtained into number
The service life for impacting service life offset according to lightning protection device lightning current is subtracted to get the lightning protection device under being impacted in a certain induced current；
5, under the impact of composite sensing lightning current, the number of lightning protection device being struck by lightning is obtained using average weighted method,
The service life also referred to as passed；6, the service life that passes for finally subtracting lightning protection device with 20, just obtaining the residue of lightning protection device makes
With service life number, it is presented as the lower number that can also be born of nominal current impact.
2. a kind of algorithm of zinc oxide lightning protection device service life according to claim 1, it is characterised in that lightning current acquires
The various data of the inductive lightning electric current lightning protection device of equipment acquisition, including act on induction lightening intensity of flow, the lightning current of lightning protection device
Act on number, local temperature data.
3. a kind of algorithm of zinc oxide lightning protection device service life according to claim 1, it is characterised in that first to the 5th
Step summarizes to obtain calculation formula：, N represents lightning protection device and passes service life,
NsRepresent lightning protection device inductive lightning electric current number of shocks compensation factor, KTThe lightning protection device current coefficient under certain temperature is represented, Io is represented
The nominal discharge current of lightning protection device, I represent lightning current real impact electric current, and No represents lightning protection device inductive lightning rush of current service life benefit
Repay value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810143355.4A CN108445315A (en) | 2018-02-11 | 2018-02-11 | A kind of algorithm of zinc oxide lightning protection device service life |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810143355.4A CN108445315A (en) | 2018-02-11 | 2018-02-11 | A kind of algorithm of zinc oxide lightning protection device service life |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109709836A (en) * | 2018-10-29 | 2019-05-03 | 上海大学 | A kind of intelligent lightning monitoring system based on NB-IOT |
| CN109799404A (en) * | 2019-01-17 | 2019-05-24 | 深圳市艾睿科电气有限公司 | The deterioration rate detection method and system of surge protective device |
| CN110823544A (en) * | 2019-11-20 | 2020-02-21 | 中国船舶重工集团海装风电股份有限公司 | Method, device, equipment and medium for calculating residual service life of variable-pitch motor brake |
-
2018
- 2018-02-11 CN CN201810143355.4A patent/CN108445315A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109709836A (en) * | 2018-10-29 | 2019-05-03 | 上海大学 | A kind of intelligent lightning monitoring system based on NB-IOT |
| CN109799404A (en) * | 2019-01-17 | 2019-05-24 | 深圳市艾睿科电气有限公司 | The deterioration rate detection method and system of surge protective device |
| CN110823544A (en) * | 2019-11-20 | 2020-02-21 | 中国船舶重工集团海装风电股份有限公司 | Method, device, equipment and medium for calculating residual service life of variable-pitch motor brake |
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