CN109799404A - The deterioration rate detection method and system of surge protective device - Google Patents
The deterioration rate detection method and system of surge protective device Download PDFInfo
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- CN109799404A CN109799404A CN201910042794.0A CN201910042794A CN109799404A CN 109799404 A CN109799404 A CN 109799404A CN 201910042794 A CN201910042794 A CN 201910042794A CN 109799404 A CN109799404 A CN 109799404A
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Abstract
The present invention is suitable for technical field of electricity, provides a kind of deterioration rate detection method of surge protective device, comprising: obtains the electrical surge current energy across surge protective device；The electrical surge current energy of the surge protective device is compared with predetermined current energy, obtains comparison result；According to the comparison result calculate the surge protective device when time impairment grade, impairment grade is accumulated before the trade of going forward side by side；It is accumulated according to the current impairment grade and determines alarm signal, the alarm signal includes the current operating conditions of the surge protective device.The embodiment of the present invention is by obtaining the electrical surge current energy across surge protective device; obtain the current impairment grade accumulation of the surge protective device; so that it is determined that damage of the surge impact to surge protective device each time; and it can be accumulated according to the current impairment grade of the surge protective device and issue alarm signal; replacement maintenance is carried out to the surge protective device in time, to guarantee that the safety of electrical equipment can be effectively protected.
Description
Technical field
The invention belongs to technical field of electricity more particularly to a kind of deterioration rate of surge protective device detection guard method and
System.
Background technique
In the application of numerous electrical equipments, electrical equipment grounding, and increasing surge protective device in the electrical apparatus is pair
The due protection of electrical equipment.Surge protective device SPD (Surge protection Device) therein is in surge electricity
When stream attacks equipment, electric current is released to big ground, plays the role of protecting electric component.For the substantially first of Surge Protector
Device has: varistor, discharging gap, gas-discharge tube, inhibition diode, choke coil etc..
According to relevant international standard or domestic standard, when using 8/20 μ s electric current wave impact SPD, if maximum electric discharge electricity
It flows I and is greater than that maximum through-current capacity Imax is primary or nominal discharge current In20 times, and SPD can be damaged, and display window can be from green
Become red.So-called 8/20 μ s current wave is according to relevant criterion (GB/17626.5-1999 " EMC test and measurement
Technology surge (impact) immunity experiment "), the lightning current waveform simulated with special equipment.
But in practical engineering applications, the waveform of surge current is not 8/20 μ s waveform of standard, and peak value is big
Small, the parameters such as phase of declining are all uncertain, and surge impact each time can not determine the damage of SPD, and after multi damage, SPD's is bad
Rate can not also judge.Therefore it can carry out great hidden danger to the safety belt of electrical equipment, it is especially non-in some security requirements
Chang Gao, and unattended, the application places checked entirely by regular visit, such as railway signal electrical equipment, wireless communication base station,
Guidance station, the application scenarios such as field monitoring point, may bring the loss that can not be retrieved.
Summary of the invention
Technical problem to be solved by the present invention lies in the deterioration rates for providing a kind of surge protective device to detect guard method
And system, it is intended to solve the problems, such as the prior art can not the deterioration rate to surge protective device judge.
The invention is realized in this way a kind of deterioration rate detection method of surge protective device, comprising:
Obtain the electrical surge current energy across surge protective device；
The electrical surge current energy of the surge protective device and preset standard surge current energy are compared,
Obtain comparison result；
According to the comparison result determine the surge protective device when time impairment grade, impairment grade is tired before the trade of going forward side by side
Product；
It is accumulated according to the current impairment grade and determines alarm signal, the alarm signal includes the surge protective device
Current operating conditions.
Further, described obtain includes: across the electrical surge current energy of surge protective device
The earth lead across the surge protective device is obtained in transient time section by surge current detection device
Induced electromotive force；
Obtain the number of turns of induction coil in the surge current detection device, the sectional area of sensor wire and the line of induction
Distance of any point to the center of the earth lead in circle；
Respectively to the distance of any point in the induced electromotive force, the induction coil to the center of the earth lead into
Row integral, obtains induced electromotive force integrated value and apart from integrated value；
According to the transient time section, the induced electromotive force integrated value, described apart from integrated value, the induction coil
The electrical surge current energy is calculated in the sectional area of the number of turns and the induction electric wire.
Further, the transient time section is indicated with Δ t, Δ t=t-t0, the electrical surge current energy with
Indicate, the induced electromotive force integrated value withIndicate, it is described apart from integrated value withIt indicates, the circle of the induction coil
Number indicates that the sectional area of the induction electric wire indicates that the angle of the induction coil plane and the magnetic line of force is indicated with θ with S with n,
Then:
Wherein, μ0Indicate the magnetic conductivity of air.
Further, the electrical surge current energy by the surge protective device and preset standard surge current
Energy compares, and obtains comparison result and includes:
According to the electrical surge current energy across the surge protective device detected, in standard surge current waveform
Energy correspond in table, search corresponding standard surge current energy, the standard surge current waveform is according to relevant criterion
(GB/17626.5-1999 " EMC test and measuring technique surge (impact) immunity experiment "), is simulated with special equipment
8/20 μ s lightning current waveform；
According to the standard surge current energy found, the electrical surge electric current energy of the surge protective device is determined
Corresponding current waveform is measured, using the current waveform as the comparison result；
Wherein, the energy, which corresponds to, preserves the corresponding current waveform of each current energy in table.
Further, according to the comparison result determine the surge protective device when time impairment grade, before the trade of going forward side by side
Degradation is accumulated
It is searched according to the current waveform and deteriorates corresponding table, it is corresponding to find the current waveform in the corresponding table of the deterioration
It is corresponding when secondary impairment grade when preserving each current waveform in time impairment grade, the corresponding table of the deterioration；
It is added described when time impairment grade with impairment grade before, obtains the current impairment grade and accumulate.
Further, described accumulated according to the current impairment grade determines that alarm signal includes:
Judge the current impairment grade it is accumulative whether reach replace the condition of the surge protective device and given birth to if reaching
At replacement warning information, and the replacement information is pushed into O&M terminal；
It is described bad if not up to, updating degradation information, and the degradation information is pushed to O&M terminal
Changing degree information includes the current degradation of current surge protective device, by surge impact number, peak value, the information of time.
Further, described to judge that the current impairment grade adds up whether reach the condition for replacing the surge protective device
Include:
Using described when time impairment grade accumulation is as current deterioration rate, by the current deterioration rate and the surge protective device
The maintenance deterioration rate sent is compared, and whether the current deterioration rate is equal to or more than the maintenance deterioration rate threshold value.
The embodiment of the invention also provides a kind of deterioration rate detection systems of surge protective device, comprising:
Surge current detection device, the induction coil including surrounding several circles by sensor wire, in transient time section
It is interior, obtain the induced electromotive force of the earth lead between passing through；
Detection system, for being calculated through the electrical surge electric current of the surge protective device according to the induced electromotive force
The electrical surge current energy of the surge protective device and preset standard surge current energy are compared, are obtained by energy
To comparison result, according to the comparison result calculate the surge protective device when time impairment grade, impairment grade before the trade of going forward side by side
Accumulation is accumulated according to the current impairment grade and determines alarm signal, and the alarm signal includes working as the surge protective device
Preceding operating status.
The embodiment of the invention also provides a kind of deterioration rate detection system of surge protective device, including terminal, the ends
End includes memory, processor and is stored in the computer program run on the memory and on the processor, described
When processor executes the computer program, the protection of surge protective device as claimed in any one of claims 1 to 7 is realized
Each step in method, information and alarm are showed.
The embodiment of the invention also provides a kind of deterioration rate detection systems of surge protective device, including readable storage medium
Matter is stored thereon with computer program, when the computer program is executed by processor, realizes as claim 1 to 7 is any one
Each step in the guard method of surge protective device described in.
Compared with prior art, the present invention beneficial effect is: the embodiment of the present invention is by obtaining surge protective device
The electrical surge current energy is compared with predetermined current energy, obtains comparing result by electrical surge current energy, according to
The comparing result calculates the current degradation of the surge protective device, finally determines alarm signal according to the current degradation
Number, and the alarm signal is issued according to preset mode.The embodiment of the present invention is by obtaining the transient state wave across surge protective device
Current energy is gushed, the current impairment grade accumulation of the surge protective device is obtained, so that it is determined that surge impact each time is to surge
The damage of protective device, and can be accumulated according to the current impairment grade of the surge protective device and issue alarm signal, in time to this
Surge protective device carries out replacement maintenance, to guarantee that the safety of electrical equipment can be effectively protected.
Detailed description of the invention
Fig. 1 is a kind of flow chart of the deterioration rate detection method of surge protective device provided in an embodiment of the present invention；
Fig. 2 is a kind of structural schematic diagram of the deterioration rate detection system of surge protective device provided in an embodiment of the present invention.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Fig. 1 shows a kind of deterioration rate detection method of surge protective device provided in an embodiment of the present invention, comprising:
S101 obtains the electrical surge current energy across surge protective device；
S102 carries out the electrical surge current energy of the surge protective device and preset standard surge current energy
Comparison, obtains comparison result；
S103, according to the comparison result determine the surge protective device when time impairment grade, deteriorated before the trade of going forward side by side
Degree accumulation；
S104 accumulates according to the current impairment grade and determines alarm signal, and the alarm signal includes the surge protection
The current operating conditions of device.
Specifically, in step s101, acquisition includes: to pass through wave across the electrical surge current energy of surge protective device
Gush current detection means obtain across the surge protective device conducting wire the transient time section in induced electromotive force；Obtain institute
State the number of turns of induction coil in surge current detection device, in the sectional area of sensor wire and the induction coil any point to institute
State the distance at the center of earth lead；Any point in the induced electromotive force, the induction coil is led to the ground connection respectively
The distance at the center of line is integrated, and obtains induced electromotive force integrated value and apart from integrated value；According to the transient time section, institute
State induced electromotive force integrated value, the sectional area meter apart from integrated value, the number of turns of the induction coil and the induction electric wire
Calculation obtains the electrical surge current energy.
Specifically, transient time section is indicated with Δ t, Δ t=t-t0, the electrical surge current energy withIt indicates, it should
Induced electromotive force integrated value withIndicate, this apart from integrated value withIt indicates, the number of turns of the induction coil is indicated with n, the sense
Answer the sectional area of electric wire is indicated with S, and the angle of the induction coil plane and the magnetic line of force is indicated with θ, then:
Wherein, μ0Indicate the magnetic conductivity of air.
In step s 102, by the electrical surge current energy of the surge protective device and preset standard surge current
Energy compares, and obtains comparison result and includes:
According to the electrical surge current energy across the surge protective device detected, in standard surge current waveform
Energy correspond in table, search corresponding standard surge current energy, the standard surge current waveform is according to relevant criterion
(GB/17626.5-1999 " EMC test and measuring technique surge (impact) immunity experiment "), is simulated with special equipment
8/20 μ s lightning current waveform；According to the standard surge current energy found, the wink of the surge protective device is determined
The corresponding current waveform of state surge current energy, using the current waveform as the comparison result；Wherein, the energy is corresponding
The corresponding current waveform of each current energy is preserved in table.
Specifically, time impairment grade of working as of the surge protective device is determined according to the comparison result, it is bad before the trade of going forward side by side
The accumulation of change degree includes: to be searched to deteriorate corresponding table according to the current waveform, finds the electric current in the corresponding table of the deterioration
Waveform is corresponding corresponding when time impairment grade when preserving each current waveform in time impairment grade, the corresponding table of the deterioration；By institute
It states when time impairment grade is added with impairment grade before, obtains the current impairment grade and accumulate.
In step S104, is accumulated according to the current impairment grade and determine that alarm signal includes:
Judge the current impairment grade it is accumulative whether reach replace the condition of the surge protective device and given birth to if reaching
At replacement warning information, and the replacement information is pushed into O&M terminal；
If not up to, updating the information such as degradation, and the information of update is pushed to O&M terminal, the letter of the update
Breath includes the current degradation of current surge protective device, by information such as surge impact number, peak value, times.
Specifically, in step S104,
Judge the current impairment grade adds up whether to reach the condition for replacing the surge protective device to include:
Using described when time impairment grade accumulation is as current deterioration rate, by the current deterioration rate and the surge protective device
The maintenance deterioration rate sent is compared, and whether the current deterioration rate is equal to or more than the maintenance deterioration rate threshold value.
More specifically, including replacement information according to the alarm signal that the accumulation of current impairment grade generates, safeguarding that information, early warning are believed
Breath or other information for being used to be prompted, the alarm signal are pushed according to pre-set mode, shown or are embodied.
Alarm signal pushes to O&M terminal as will be described, and operation maintenance personnel knows the surge protection dress being abnormal by the alarm signal
Number, position and the abnormal conditions set, to facilitate operation maintenance personnel to repair or replace surge protective device.Or alarm
Signal is wirelessly sent to surge protective device, and the alarm unit on surge protective device issues photoelectric alarm.Or
In background service center, display is currently abnormal the surge protective device of situation, and background work personnel are according to the alarm of display
Signal notifies corresponding operation maintenance personnel to carry out on-site maintenance or replacement.
The embodiment of the present invention is further illustrated below:
In the specific use process, more accurately warning information is obtained, avoids generating worse consequence, the present invention
Embodiment first has to carry out the detection of momentary surges current energy.In the present embodiment, the earth lead of electrical equipment is through the wave
It is grounded after gushing protective device.
Ampere's right-handed screw rule in Theory of Electromagnetic Field, B are the induced magnetic field around earth lead flowing, and I connects for this
Current direction in ground wire, magnetic field flow direction are four finger bending directions.
By the electric current of the earth lead, induced magnetic field can be generated around it, direction and the electric current of induced magnetic field B flows through
Direction follow Ampere's right-handed screw rule.In the present embodiment, in the earth lead direction parallel by surge current, coiling n circle is cut
Area is the induction coil of S, is passed through then having the magnetic line of force in induction coil, and generate induced electromotive force, the induced electromotive force
Size are as follows:
Wherein ε is induced electromotive force, and Δ φ is the variation of magnetic flux, and Δ t is the variation of time.That is the variation speed of magnetic flux
Degree is faster, and induced electromotive force is bigger.
Under such specified conditions, the calculating of magnetic flux are as follows:
φ=BScos θ (formula 2)
Wherein B is magnetic induction intensity, and S is the sectional area of induction coil, and θ is the angle of induction coil plane and the magnetic line of force.
The magnetic induction intensity of the earth lead are as follows:
Wherein μ0=4 π × 10-7N·A-2It is the magnetic conductivity of vacuum (air), r is distance of the measurement point to earth lead, i.e.,
R be induction coil on any point to the earth lead center across center distance.
Available according to above-mentioned formula 1, formula 2 and formula 3, certain is fixed in r round wires, in a certain transient time section Δ t
The variation relation of interior (such as the 1 μ s) induced electromotive force that can be detected and the I of same time period are as follows:
Therefore, in the present embodiment, can be fixed in r round wires by measuring certain, in a certain transient time section Δ t (such as 1
μ s) in induced electromotive force ε calculate the curent change Δ I of this process, it may be assumed that
And in practical engineering applications, what is needed is the surge current energy in the more extensive time, more precisely goes out to survey
Amount is as a result, in practical applications, what can actually be checked is the integrated value of induced electromotive force ε, and to accumulate S range in detection sectional plane
It is interior, to the integral of the distance r of each point on induction electric wire to earth lead:
In the present embodiment, by the way that the corresponding physical parameter of surge current detection device is arranged, the number of turns n, sectional area are determined
S, the angle theta of induction coil plane and the magnetic line of force, and calculate(t-t is being detected by electronic circuit0) and integral electricity
Road detectsTo detecting electrical surge current energy, to electrical equipment safety measure take provide it is most real-time
The data basis of data makes early warning and pre- maintenance.
Fig. 2 shows a kind of protection terminals of surge protective device provided in an embodiment of the present invention, comprising:
Surge current detection device 201, the induction coil including surrounding several circles by sensor wire, in the transient time
In section, the induced electromotive force of the earth lead between passing through is obtained；
Detection system 202, for being calculated through the electrical surge of the surge protective device according to the induced electromotive force
Current energy carries out the electrical surge current energy of the surge protective device and preset standard surge current energy pair
Than obtaining comparison result, the current degradation of the surge protective device being calculated according to the comparison result, is worked as according to described
Preceding degradation determines that alarm signal, the alarm signal include the current operating conditions of the surge protective device.
Wherein, surge current detection device 201 carries out data interaction by home control network communication protocol with detection system 202.
Specifically, detection system 202 includes:
Intensity detection unit, for being led by surge current detection device acquisition across the ground connection of the surge protective device
Induced electromotive force of the line in transient time section；
Acquiring unit, for obtaining the section of the number of turns of induction coil in the surge current detection device, sensor wire
Distance of any point to the center of the earth lead in the long-pending and induction coil；
Integral unit, and respectively to any point in the induced electromotive force, the induction coil to the earth lead
The distance at center is integrated, and obtains induced electromotive force integrated value and apart from integrated value；
Computing unit, for according to the transient time section, the induced electromotive force integrated value, it is described apart from integrated value,
The electrical surge current energy is calculated in the sectional area of the number of turns of the induction coil and the induction electric wire.
Specifically, the transient time section is indicated with Δ t, Δ t=t-t0, the electrical surge current energy withTable
Show, the induced electromotive force integrated value withIndicate, it is described apart from integrated value withIt indicates, the number of turns of the induction coil
It is indicated with n, the sectional area of the induction electric wire indicates that the angle of the induction coil plane and the magnetic line of force is indicated with θ, then with S:
Wherein, μ0Indicate the magnetic conductivity of air.
Further, protective device 202 further include:
Waveform look-up unit, for according to the electrical surge current energy across the surge protective device that detects,
It is corresponded in table in the energy of standard surge current waveform, searches corresponding standard surge current energy, the standard surge current
Waveform is according to relevant criterion (GB/17626.5-1999 " EMC test and the examination of measuring technique surge (impact) immunity to interference
Test "), the 8/20 μ s lightning current waveform simulated with special equipment；
According to the standard surge current energy found, the electrical surge electric current energy of the surge protective device is determined
Corresponding current waveform is measured, using the current waveform as the comparison result；
Wherein, the energy, which corresponds to, preserves the corresponding current waveform of each current energy in table.
Further, detection system 202 further include:
Searching unit is deteriorated, deteriorates corresponding table for searching according to the current waveform, is looked in the corresponding table of the deterioration
It is corresponding corresponding when secondary bad when preserving each current waveform in time impairment grade, the corresponding table of the deterioration to the current waveform
Change degree；It is added described when time impairment grade with impairment grade before, obtains the current impairment grade and accumulate.
Further, protective device 202 further include:
Generation unit, for judging that the current impairment grade adds up whether to reach the item for replacing the surge protective device
Part generates replacement warning information, and the replacement information is pushed to O&M terminal if reaching；
It is described bad if not up to, updating degradation information, and the degradation information is pushed to O&M terminal
Changing degree information includes the current degradation of current surge protective device, by surge impact number, peak value, the information of time.
Further, generation unit is specifically used for:
Using described when time impairment grade accumulation is as current deterioration rate, by the current deterioration rate and the surge protective device
The maintenance deterioration rate sent is compared, and whether the current deterioration rate is equal to or more than the maintenance deterioration rate threshold value.
In embodiments of the present invention, electrical surge current energy be a numerical value, the application in the lab, by step by step
The size for adjusting the current wave of 8/20 μ s compares test to surge current detection device, obtains several corresponding tables, such as energy
Waveform corresponds to table, deterioration rate corresponds to table etc..In several corresponding tables, the corresponding current energy of each 8/20 μ s current wave I
Value, when detecting electrical surge current energy, counter can release 8/20 μ s current wave I of a standard.More specifically, in this Shen
Please in, SPD is tested by 8/20 different μ s current wave of use for laboratory, the ability to bear of SPD is obtained, to obtain bad
The corresponding relationship of rate and different 8/20 μ s current waves.In the present embodiment, according to " detection electrical surge current energy --- look into
Table obtains corresponding 8/20 μ s current wave --- tabling look-up to obtain deterioration rate --- and detects once, to accumulate once --- accumulation to setting
The step of value --- alarm or replacement ", carries out the protection of surge protective device.
In several embodiments provided herein, it should be understood that disclosed method and system can pass through it
Its mode is realized.For example, system embodiment described above is only schematical, for example, the division of the unit, only
Only a kind of logical function partition, there may be another division manner in actual implementation, such as multiple units or components can be tied
Another system is closed or is desirably integrated into, or some features can be ignored or not executed.Another point, it is shown or discussed
Mutual coupling, direct-coupling or communication connection can be through some interfaces, the INDIRECT COUPLING or logical of system or unit
Letter connection can be electrical property, mechanical or other forms.
The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple
In network unit.It can select some or all of unit therein according to the actual needs to realize the mesh of this embodiment scheme
's.
It, can also be in addition, the functional units in various embodiments of the present invention may be integrated into one processing unit
It is that each unit physically exists alone, can also be integrated in one unit with two or more units.Above-mentioned integrated list
Member both can take the form of hardware realization, can also realize in the form of software functional units.
If the integrated unit is realized in the form of SFU software functional unit and sells or use as independent product
When, it can store in a computer readable storage medium.Based on this understanding, technical solution of the present invention is substantially
The all or part of the part that contributes to existing technology or the technical solution can be in the form of software products in other words
It embodies, which is stored in a storage medium, including some instructions are used so that a computer
Equipment (can be personal computer, server or the network equipment etc.) executes the complete of each embodiment the method for the present invention
Portion or part steps.And storage medium above-mentioned includes: USB flash disk, mobile hard disk, read-only memory (ROM, Read-
OnlyMemory), random access memory (RAM, RandomAccessMemory), magnetic or disk etc. are various can store
The medium of program code.
It should be noted that for the various method embodiments described above, describing for simplicity, therefore, it is stated as a series of
Combination of actions, but those skilled in the art should understand that, the present invention is not limited by the sequence of acts described because
According to the present invention, certain steps can use other sequences or carry out simultaneously.Secondly, those skilled in the art should also know
It knows, the embodiments described in the specification are all preferred embodiments, and related movement and unit might not all be this hairs
Necessary to bright.
In the above-described embodiments, it all emphasizes particularly on different fields to the description of each embodiment, there is no the portion being described in detail in some embodiment
Point, it may refer to the associated description of other embodiments.
It is right the above are to a kind of description of the deterioration rate detection method and system of surge protective device provided by the present invention
In those skilled in the art, thought according to an embodiment of the present invention has change in specific embodiments and applications
Become place, to sum up, the contents of this specification are not to be construed as limiting the invention.
Claims (10)
1. a kind of deterioration rate detection method of surge protective device characterized by comprising
Obtain the electrical surge current energy across surge protective device；
The electrical surge current energy of the surge protective device and preset standard surge current energy are compared, obtained
Comparison result；
According to the comparison result determine the surge protective device when time impairment grade, impairment grade is accumulated before the trade of going forward side by side；
It is accumulated according to the current impairment grade and determines alarm signal, the alarm signal includes the current of the surge protective device
Operating status.
2. deterioration rate detection method as described in claim 1, which is characterized in that the wink obtained across surge protective device
State surge current energy includes:
By surge current detection device obtain across the surge protective device earth lead the transient time section in sense
Answer electromotive force；
It obtains in the number of turns of induction coil in the surge current detection device, the sectional area of sensor wire and the induction coil
Distance of any point to the center of the earth lead；
The distance at any point to the center of the earth lead in the induced electromotive force, the induction coil is accumulated respectively
Point, obtain induced electromotive force integrated value and apart from integrated value；
According to the transient time section, the induced electromotive force integrated value, described apart from integrated value, the number of turns of the induction coil
The electrical surge current energy is calculated with the sectional area of the induction electric wire.
3. deterioration rate detection method as claimed in claim 2, which is characterized in that transient time section indicates with Δ t, Δ t
=t-t0, the electrical surge current energy withIndicate, the induced electromotive force integrated value withIt indicates, the distance product
Score value withIt indicates, the number of turns of the induction coil is indicated with n, and the sectional area of the induction electric wire is indicated with S, the induction
The angle of coil plane and the magnetic line of force indicates with θ, then:
Wherein, μ0Indicate the magnetic conductivity of air.
4. deterioration rate detection method as described in claim 1, which is characterized in that the transient state by the surge protective device
Surge current energy is compared with preset standard surge current energy, is obtained comparison result and is included:
According to the electrical surge current energy across the surge protective device detected, in the energy of standard surge current waveform
It measures in corresponding table, searches corresponding standard surge current energy, the standard surge current waveform is according to relevant criterion (GB/
17626.5-1999 " EMC test and measuring technique surge (impact) immunity experiment "), 8/ simulated with special equipment
20 μ s lightning current waveforms；
According to the standard surge current energy found, the electrical surge current energy pair of the surge protective device is determined
The current waveform answered, using the current waveform as the comparison result；
Wherein, the energy, which corresponds to, preserves the corresponding current waveform of each current energy in table.
5. deterioration rate detection method as claimed in claim 4, which is characterized in that determine the surge according to the comparison result
Protective device works as time impairment grade, and degradation, which is accumulated, before the trade of going forward side by side includes:
It is searched according to the current waveform and deteriorates corresponding table, find that the current waveform is corresponding to work as in deterioration correspondence table
It is corresponding when time impairment grade to preserve each current waveform in the corresponding table of the deterioration for secondary impairment grade；
It is added described when time impairment grade with impairment grade before, obtains the current impairment grade and accumulate.
6. deterioration rate detection method as claimed in claim 5, which is characterized in that described to be accumulated really according to the current impairment grade
Determining alarm signal includes:
Judge the current impairment grade it is accumulative whether reach replace the condition of the surge protective device and generated more if reaching
Warning information is changed, and the replacement information is pushed into O&M terminal；
If not up to, updating degradation information, and the degradation information is pushed to O&M terminal, the deterioration journey
Spending information includes the current degradation of current surge protective device, by surge impact number, peak value, the information of time.
7. deterioration rate detection method as claimed in claim 6, which is characterized in that the judgement current impairment grade is accumulative to be
It is no reach replace the condition of the surge protective device and include:
Work as time impairment grade accumulation as current deterioration rate using described, the current deterioration rate and the surge protective device are sent
Maintenance deterioration rate is compared, and whether the current deterioration rate is equal to or more than the maintenance deterioration rate threshold value.
8. a kind of deterioration rate detection system of surge protective device characterized by comprising
Surge current detection device, the induction coil including surrounding several circles by sensor wire, for obtaining in transient time section
Take the induced electromotive force of the earth lead between passing through；
Detection system, for being calculated through the electrical surge electric current energy of the surge protective device according to the induced electromotive force
Amount, the electrical surge current energy of the surge protective device and preset standard surge current energy are compared, obtained
Comparison result, according to the comparison result calculate the surge protective device when time impairment grade, impairment grade is tired before the trade of going forward side by side
Product accumulates according to the current impairment grade and determines alarm signal, and the alarm signal includes the current of the surge protective device
Operating status.
9. a kind of deterioration rate detection system of surge protective device, which is characterized in that including terminal, the terminal includes storage
Device, processor and it is stored in the computer program run on the memory and on the processor, the processor executes
When the computer program, realize each in the guard method of surge protective device as claimed in any one of claims 1 to 7
A step, information and alarm are showed.
10. a kind of deterioration rate detection system of surge protective device, which is characterized in that including readable storage medium storing program for executing, store thereon
There is computer program, when the computer program is executed by processor, realizes wave as claimed in any one of claims 1 to 7
Gush each step in the guard method of protective device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910042794.0A CN109799404B (en) | 2019-01-17 | 2019-01-17 | Method and system for detecting degradation rate of surge protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910042794.0A CN109799404B (en) | 2019-01-17 | 2019-01-17 | Method and system for detecting degradation rate of surge protection device |
Publications (2)
| Publication Number | Publication Date |
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| CN109799404A true CN109799404A (en) | 2019-05-24 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110426607A (en) * | 2019-06-03 | 2019-11-08 | 江苏德大石化科技有限公司 | The monitoring system of arc flash occurs for a kind of identification lightning current |
| CN111880056A (en) * | 2020-07-10 | 2020-11-03 | 交控科技股份有限公司 | Method and device for detecting use state of lightning protection module in rail transit |
| CN112230100A (en) * | 2020-09-29 | 2021-01-15 | 山东大学 | Slow-development permanent fault early warning method and system |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5434043A (en) * | 1977-08-19 | 1979-03-13 | Mitsubishi Electric Corp | Degradation detecting system for lighting arrester |
| CN201466711U (en) * | 2009-07-06 | 2010-05-12 | 孙巍巍 | Surge protector with detection device |
| CN201852876U (en) * | 2010-09-26 | 2011-06-01 | 广州中光电子科技有限公司 | Integral lightning protection module with functions of leakage current detection and discharge frequency |
| CN102298108A (en) * | 2011-05-25 | 2011-12-28 | 重庆大学 | Impact characteristic simulation test apparatus of earthing device and method thereof |
| KR20140062625A (en) * | 2012-11-14 | 2014-05-26 | 한국전기연구원 | Reliability estimation apparatus and method of surge protective device for power and signal |
| CN103852659A (en) * | 2012-12-05 | 2014-06-11 | 孙巍巍 | Novel SPD on-line detection device |
| CN104267305A (en) * | 2014-09-25 | 2015-01-07 | 深圳市科威电子测试有限公司 | Method and system for judging deterioration degree of surge protective device (SPD) |
| CN105334410A (en) * | 2015-10-10 | 2016-02-17 | 安徽中普盛德电子科技有限公司 | SPD deterioration degree monitoring device |
| CN205720407U (en) * | 2016-04-13 | 2016-11-23 | 上海臻和防雷电气技术有限责任公司 | A kind of detection equipment monitoring lightning protection device number of lightning strokes and thunderbolt intensity |
| CN108445315A (en) * | 2018-02-11 | 2018-08-24 | 深圳市安信技术有限公司 | A kind of algorithm of zinc oxide lightning protection device service life |
-
2019
- 2019-01-17 CN CN201910042794.0A patent/CN109799404B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5434043A (en) * | 1977-08-19 | 1979-03-13 | Mitsubishi Electric Corp | Degradation detecting system for lighting arrester |
| CN201466711U (en) * | 2009-07-06 | 2010-05-12 | 孙巍巍 | Surge protector with detection device |
| CN201852876U (en) * | 2010-09-26 | 2011-06-01 | 广州中光电子科技有限公司 | Integral lightning protection module with functions of leakage current detection and discharge frequency |
| CN102298108A (en) * | 2011-05-25 | 2011-12-28 | 重庆大学 | Impact characteristic simulation test apparatus of earthing device and method thereof |
| KR20140062625A (en) * | 2012-11-14 | 2014-05-26 | 한국전기연구원 | Reliability estimation apparatus and method of surge protective device for power and signal |
| CN103852659A (en) * | 2012-12-05 | 2014-06-11 | 孙巍巍 | Novel SPD on-line detection device |
| CN104267305A (en) * | 2014-09-25 | 2015-01-07 | 深圳市科威电子测试有限公司 | Method and system for judging deterioration degree of surge protective device (SPD) |
| CN105334410A (en) * | 2015-10-10 | 2016-02-17 | 安徽中普盛德电子科技有限公司 | SPD deterioration degree monitoring device |
| CN205720407U (en) * | 2016-04-13 | 2016-11-23 | 上海臻和防雷电气技术有限责任公司 | A kind of detection equipment monitoring lightning protection device number of lightning strokes and thunderbolt intensity |
| CN108445315A (en) * | 2018-02-11 | 2018-08-24 | 深圳市安信技术有限公司 | A kind of algorithm of zinc oxide lightning protection device service life |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110426607A (en) * | 2019-06-03 | 2019-11-08 | 江苏德大石化科技有限公司 | The monitoring system of arc flash occurs for a kind of identification lightning current |
| CN111880056A (en) * | 2020-07-10 | 2020-11-03 | 交控科技股份有限公司 | Method and device for detecting use state of lightning protection module in rail transit |
| CN112230100A (en) * | 2020-09-29 | 2021-01-15 | 山东大学 | Slow-development permanent fault early warning method and system |
| CN112230100B (en) * | 2020-09-29 | 2022-01-11 | 山东大学 | Slow-development permanent fault early warning method and system |
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