CN107179453A - Apparatus and method for Surge Protector - Google Patents
Apparatus and method for Surge Protector Download PDFInfo
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- CN107179453A CN107179453A CN201610645273.0A CN201610645273A CN107179453A CN 107179453 A CN107179453 A CN 107179453A CN 201610645273 A CN201610645273 A CN 201610645273A CN 107179453 A CN107179453 A CN 107179453A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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Abstract
A kind of apparatus and method for Surge Protector, described device includes：Change-over circuit, the surge current of input is converted to the voltage signal proportional to the surge current；Peak value obtains circuit, obtains the crest voltage of the voltage signal；Duration determination circuit, based on the voltage signal, determines the duration of the surge current；Peak point current determines circuit, based on the predetermined relationship between crest voltage and peak inrush current, it is determined that peak inrush current corresponding with the crest voltage；Life parameter determines circuit, and based on the life curve of the Surge Protector, the parameter in the life-span for representing the Surge Protector is determined from the peak inrush current and the duration；And output circuit, export the parameter.
Description
Technical field
The present invention relates to the field of detection of electrons, more particularly it relates to a kind of device for Surge Protector
And method.
Background technology
At present, Surge Protector (Surge Protection Device, SPD) has been widely used for such as lightning current
The field of protection etc..But it is due to the structure limitation of current Surge Protector, user can not understand the detailed work of Surge Protector
Make state, whether played a role so as to puzzled Surge Protector.
On the other hand, Surge Protector is gradually degraded over time, although without damaging completely, performance possibly can not expire
The need for sufficient trouble free service.However, also due to the structure limitation of Surge Protector, user can not understand the bad of Surge Protector
Change degree, so that in the presence of very big potential safety hazard.
The content of the invention
In view of the above, the invention provides a kind of apparatus and method for Surge Protector, it can be effective
Ground indicates the working condition of Surge Protector, so as to improve Consumer's Experience, and improves the peace of Surge Protector and its application scenario
Quan Xing.
According to one embodiment of the invention there is provided a kind of device for Surge Protector, including：Change-over circuit, will be defeated
The surge current entered is converted to the voltage signal proportional to the surge current；Peak value obtains circuit, obtains the voltage letter
Number crest voltage；Duration determination circuit, based on the voltage signal, determines the duration of the surge current；Peak
Value electric current determines circuit, based on the predetermined relationship between crest voltage and peak inrush current, it is determined that with the crest voltage pair
The peak inrush current answered；Life parameter determines circuit, based on the life curve of the Surge Protector, from the peak value surge
Electric current and the duration determine the parameter in the life-span for representing the Surge Protector；And output circuit, export institute
State parameter.
According to another embodiment of the present invention there is provided a kind of method for Surge Protector, including：By the surge of input
Electric current is converted to the voltage signal proportional to the surge current；Obtain the crest voltage of the voltage signal；Based on described
Voltage signal, determines the duration of the surge current；Based on the predetermined relationship between crest voltage and peak inrush current,
It is determined that peak inrush current corresponding with the crest voltage；Based on the life curve of the Surge Protector, from the peak value
Surge current and the duration determine the parameter in the life-span for representing the Surge Protector；And export the ginseng
Number.
In the apparatus and method for Surge Protector according to embodiments of the present invention, its peak is determined according to surge current
Value and duration, and then the life parameter of Surge Protector is determined, so as to effectively indicate the work of Surge Protector
Situation, so as to improve Consumer's Experience, and improves the security of Surge Protector and its application scenario.
Brief description of the drawings
Figure 1A and 1B are the signals for the application scenarios for showing the device for Surge Protector according to embodiments of the present invention
Figure；
Fig. 2 is the frame for the main configuration for schematically showing the device for Surge Protector according to embodiments of the present invention
Figure；
Fig. 3 is the first embodiment for schematically showing the device for Surge Protector according to embodiments of the present invention
The structure chart of hardware configuration；
Fig. 4 is the second embodiment for schematically showing the device for Surge Protector according to embodiments of the present invention
The structure chart of hardware configuration；
Fig. 5 is to schematically show the energy harvesting circuit in the device for Surge Protector according to embodiments of the present invention
Example implementation circuit diagram；
Fig. 6 is to schematically show actual surge current signal, the output signal of mutual inductance circuit, the output signal of integrating circuit
The oscillogram of the relation of (that is, the voltage signal described in reference picture 2) between the approximate signal of the voltage signal；
Fig. 7 is the figure for the life curve for schematically showing Surge Protector；And
Fig. 8 is the flow chart for the key step for showing the method for Surge Protector according to embodiments of the present invention.
Embodiment
The embodiment of the present invention is described in detail below with reference to accompanying drawing.
Figure 1A and 1B are the signals for the application scenarios for showing the device for Surge Protector according to embodiments of the present invention
Figure.
Specifically, Figure 1A and Figure 1B respectively illustrate the two of the device for Surge Protector according to embodiments of the present invention
Plant layout type.In figure ia, electronic unit 120 and mutual inductance circuit 130A and 130B are constituted according to embodiments of the present invention
The device for Surge Protector, it is with existing Surge Protector 110A and 11B with half around mode (that is, the side of anti-" L " shape
Formula) it is set together.Surge Protector 110A is connected to electronic unit 120, and Surge Protector through mutual inductance circuit 130A
110B is connected to electronic unit 120 through mutual inductance circuit 130B.
In fig. ib, equally, electronic unit 120 and mutual inductance circuit 130A and 130B are constituted according to present invention implementation
The device for Surge Protector of example.Surge Protector 110A is connected to electronic unit 120, and wave through mutual inductance circuit 130A
Surge protector 110B is connected to electronic unit 120 through mutual inductance circuit 130B.From unlike Figure 1A, described device and existing surge
Protector 110A and 11B are set together in a side-by-side fashion.
It was found from Figure 1A and Figure 1B, existing Surge Protector with referring to Fig. 2 to Fig. 7 be described in detail according to the present invention
The combination of the device for Surge Protector of embodiment can be considered Surge Protector according to embodiments of the present invention.
It is pointed out that Figure 1A and Figure 1B is merely exemplary to illustrate the two of Surge Protector according to embodiments of the present invention
Plant exemplary layout mode.Those skilled in the art herein basis on can design other various layout type.
In addition it should be pointed out that, Figure 1A and Figure 1B graphical representation of exemplary two-stage Surge Protector.Needed depending on design
Will, more or less Surge Protectors can be cascaded.
The device for Surge Protector of the embodiment of the present invention is described next, with reference to Fig. 2.The use of the embodiment of the present invention
It is used for the instruction of the parameter for the life-span correlation that the Surge Protector is provided in the device of Surge Protector, therefore, the present invention is real
The device for Surge Protector for applying example can be implemented as instruction device or supervising device for Surge Protector.
As shown in Fig. 2 described device 200, which includes change-over circuit 210, peak value, obtains circuit 220, duration determination circuit
230th, peak point current determines that circuit 240, life parameter determine circuit 250 and output circuit 260.
Specifically, the change-over circuit 210 is converted to the surge current of input the electricity proportional to the surge current
Press signal.Exemplarily, the change-over circuit 210 may include mutual inductance circuit and integrating circuit.The mutual inductance circuit can for example lead to
The device for crossing Rogowski coil etc. is realized, for the surge current to be converted into differential signal.The integrating circuit is to described micro-
Sub-signal is integrated, to obtain the voltage signal.The voltage signal is directly proportional to the surge current.Certainly, ability
Field technique personnel are it is understood that the implementation of above-described change-over circuit 210 is merely illustrative.The device of the embodiment of the present invention
Not limited to this, as long as it can be converted to the surge current of input the voltage signal proportional to the surge current.
The peak value obtains the crest voltage that circuit 220 obtains the voltage signal.In an implementation, the peak value
Obtaining circuit 220 may include that peak value obtains circuit and holding circuit.The peak value obtains the peak that circuit obtains the voltage signal
Threshold voltage.The holding circuit keeps the crest voltage.Alternatively, the holding circuit may include positive peak holding circuit and
At least one in negative peak holding circuit.The positive peak holding circuit is used to keep peak forward voltage.The negative peak
Holding circuit is used to keep negative peak voltage.Certainly, it will be appreciated by those skilled in the art that above-described peak value obtains electricity
The implementation on road 220 is merely illustrative.The device not limited to this of the embodiment of the present invention, as long as it can obtain the voltage signal
Crest voltage.
The duration determination circuit 230 is based on the voltage signal, determines the duration of the surge current.
Specifically, in one embodiment, the duration determination circuit 230 directly from the voltage signal it is lasting when
Between and determine duration of the surge current.That is, described the holding the voltage signal of duration determination circuit 230
Continue the time as the duration of the surge current.
In another embodiment, it is contemplated that the duration of surge current is generally very short, it may be difficult to direct exactly
Obtain the duration of the surge current and its associated voltage signal, by the energy and crest voltage of voltage signal come
Obtain the duration.
More specifically, in this embodiment, the duration determination circuit 230 includes energy harvesting circuit and calculates electricity
Road.The energy harvesting circuit obtains the energy of the voltage signal.The counting circuit is based on the crest voltage and described
Energy, calculates the duration of the surge current.For example, the counting circuit can be approximate by the waveform of the voltage signal
For geometric figure.Thus, it is possible to the crest voltage and expression institute based on the first geometric parameter for representing the geometric figure
The energy of the second geometric parameter of geometric figure is stated, the described of the 3rd geometric parameter for representing the geometric figure is calculated and holds
The continuous time.
For example, the waveform of the voltage signal can be approximately triangle by the counting circuit.Thus, when described lasting
Between represent a base of the triangle, the crest voltage represents the height corresponding with this base of the triangle, and
And the energy represents the area of the triangle.So as to which the counting circuit can be by holding described in following expression (1) determination
The continuous time：
Wherein, T is the duration of the surge current, and S is the energy of the voltage signal, and VpeakFor the electricity
Press the crest voltage of signal.
The peak point current determines circuit 240 based on the predetermined relationship between crest voltage and peak inrush current, it is determined that
Peak inrush current corresponding with the crest voltage.Predetermined relationship between the crest voltage and the peak inrush current
It can be obtained ahead of time by those skilled in the art by test.Thus, obtain circuit 220 in the peak value and obtain the peak
After threshold voltage, the peak point current determines that circuit 240 can be based on the crest voltage and the predetermined relationship, it is determined that correspondence
Peak inrush current.
By the duration determination circuit 230 determine surge current duration and pass through the peak value electricity
Stream determines after the determination peak inrush current of circuit 240 that the life parameter determines that circuit 250 can be based on the surge protection
The life curve of device, the life-span for representing the Surge Protector is determined from the peak inrush current and the duration
Parameter.Specifically, the life curve of the Surge Protector can be provided by the manufacturer of the Surge Protector.The longevity
Life curve illustrates Surge Protector with the time by the degradation under the impact of different surge currents.Thus, the longevity
The peak inrush current and the duration can be based on by ordering parameter determination circuitry 250, determine the parameter.
Although it is pointed out that be described here in case of the life curve of the Surge Protector,
But, the device not limited to this of the embodiment of the present invention, and can be by the device (example included in the Surge Protector
Such as, MOV (Metal Oxide Varistor, metal oxide piezo-resistance)) life curve alternatively represent the wave
The life curve of surge protector.
Exemplarily, the life parameter determines that circuit may include first processing units, reading unit and second processing list
Member.Life curve of the first processing units based on the Surge Protector, from the peak inrush current and described lasting
Time determines the first degradation of the Surge Protector caused by this surge current.The reading unit read by
Second degradation of the Surge Protector caused by conventional surge current.The second processing unit is based on described first
Degradation and second degradation, determine the parameter.For example, the second processing unit deteriorates journey by described first
Degree is added with second degradation, accumulation degradation is determined, so that it is determined that residual life, accumulation degradation etc.
Deng be used for represent the Surge Protector life-span parameter.The parameter for example can be with percentage, remaining time, residue
The various forms of number of times etc. is presented.Certainly, it will be appreciated by those skilled in the art that above-described life parameter determines circuit
Implementation is merely illustrative.The device not limited to this of the embodiment of the present invention, as long as it can determine for representing that the surge is protected
Protect the parameter in the life-span of device.For example, the life parameter determines that circuit directly can regard the output of degradation each other as the ginseng
Number, etc..
Finally, the output circuit 260 exports the parameter.In the first example, the output circuit 260 can be by institute
State parameter to export to the indicator associated with the Surge Protector, to indicate the Surge Protector by the indicator
Life-span, in order to which user checks at any time.In the second example, the output circuit 260 can export the parameter to being used for
The supervising device of the Surge Protector is monitored, with the Surge Protector as described in engineering staff's Centralized Monitoring.In the 3rd example,
The output circuit 260 can export the parameter to storage device, in order to store the history work of the Surge Protector
Make information.In addition, be except exporting the parameter value, the output circuit 260 can also export the peak inrush current and
At least one in the duration.That is, the output circuit 260 can export the correlation of this lightning current impact
Information, in order to user check or engineering staff monitoring etc..
More than, reference picture 2 describes the device for Surge Protector of the embodiment of the present invention.Next, with reference to Fig. 3 and
Fig. 4 describes two kinds of implementations of the device for Surge Protector of the embodiment of the present invention.
Fig. 3 is the first embodiment for schematically showing the device for Surge Protector according to embodiments of the present invention
The structure chart of hardware configuration.
As shown in figure 3, described device 300, which includes mutual inductance circuit 310, integrating circuit 320, peak value, obtains circuit 330, posivtive spike
Be worth holding circuit 340A, negative peak holding circuit 340B, energy harvesting circuit 350, MCU (Micro Controller Unit,
Micro-control unit) 360, life parameter display circuit 370, telecommunication circuit 380 and data exchange circuit 390.
The mutual inductance circuit 310 is for example realized by the device of such as transformer.More specifically, the transformer is for example
Realized by the coil of Rogowski coil etc., it is used to receive 8/20 exemplary μ s surge currents.Certainly, the surge current
Value and the duration it is merely illustrative, the device not limited to this of the embodiment of the present invention.The mutual inductance circuit 310 and the integration electricity
Road 320 is embodied as the change-over circuit 210 shown in Fig. 2.
Because the embodiment shown in Fig. 3 is more applicable for less demanding (that is, processing speed is relatively low) of MCU performance
Situation, therefore, it is that peak value obtains circuit and peak holding circuit is realized that the peak value shown in Fig. 2 is obtained into 220 points of circuit.More specifically
Ground, the peak value shown in Fig. 2 obtains circuit 220 and can be implemented as the peak value acquisition circuit 330, the positive peak holding circuit
The 340A and negative peak holding circuit 340B is realized.
The energy harvesting circuit 350 and the MCU 360 are embodied as the duration determination circuit 230 shown in Fig. 2.This
Outside, the peak point current that the MCU 360 is also embodied as shown in Fig. 2 determines that circuit 240 and life parameter determine circuit 250.
The life parameter display circuit 370, the telecommunication circuit 380 and the data exchange circuit 390 are embodied as Fig. 2
Shown output circuit 260.Specifically, the life parameter display circuit 370 is used for the life-span for showing the Surge Protector,
In order to which user checks at any time.In the second example, the telecommunication circuit 380 is used to export the parameter to for monitoring
The supervising device of Surge Protector is stated, with the Surge Protector as described in engineering staff's Centralized Monitoring.The telecommunication circuit 380 can be with
Realized, can also be realized by radio communication by wire communication.The data exchange circuit 390 is used to export the parameter
To storage device, in order to store the history job information of the Surge Protector.The storage device can be locally stored
Device or remote storage.
More than, reference picture 3 describes the first implementation of the device for Surge Protector of the embodiment of the present invention.
In this implementation, MCU only needs to handle corresponding calculating processing etc., therefore, does not have high requirement to MCU performance, be easy to
Lower cost is realized.
Alternatively, in the case of to the no too high request of cost, implementation of the present invention can be realized by high-performance MCU
The device of example.Fig. 4 is the second embodiment for schematically showing the device for Surge Protector according to embodiments of the present invention
Hardware configuration structure chart.
Shown as shown in figure 4, described device 400 includes mutual inductance circuit 410, integrating circuit 420, MCU 430, life parameter
Circuit 440, telecommunication circuit 450 and data exchange circuit 460.From unlike Fig. 3, in this implementation, the institute shown in Fig. 2
State peak value acquisition circuit 220, the duration determination circuit 230, the peak point current and determine circuit 240 and life-span ginseng
Number determines that circuit 250 is realized by MCU.In addition, from unlike Fig. 3, because Fig. 4 is more applicable for MCU 430 property
Can the faster situation of higher, processing speed, so being no longer provided with peak holding circuit.Therefore, compared with Fig. 3, eliminate very
Many external hardware circuits, so as to save the volume of device, are conducive to the miniaturization of device.
Fig. 5 is to schematically show the energy harvesting circuit in the device for Surge Protector according to embodiments of the present invention
Example implementation circuit diagram.As shown in figure 5, integrating circuit 510, energy harvesting circuit 520 and MCU 530 are for example corresponded to respectively
Integrating circuit 320, energy harvesting circuit 350 and MCU 360 in Fig. 3.Specifically, the energy harvesting circuit 520 is for example
Including the diode 521 and capacitor 522 being connected in series.In addition, the capacitor 522 is grounded.Thus, the voltage signal exists
After diode 521 and capacitor 522, by obtaining the signal over the ground of capacitor 522 and outputting this to MCU, so that
Obtain the energy signal.Certainly, it will be appreciated by those skilled in the art that the implementation of above-described energy harvesting circuit
It is merely illustrative.The device not limited to this of the embodiment of the present invention, and can be by other various modes to realize.
Fig. 6 is to schematically show actual surge current signal, the output signal of mutual inductance circuit, the output signal of integrating circuit
The oscillogram of the relation of (that is, the voltage signal described in reference picture 2) between the approximate signal of the voltage signal.
Wherein, with thin actual surge current signal shown in phantom, i.e. the M2 shown in Fig. 6.It is shown in solid mutual inductance circuit
Output signal, i.e. the M3 shown in Fig. 6.It is shown in dash-dot lines output signal (that is, the electricity described in reference picture 2 with integrating circuit
Press signal) corresponding signal, i.e. the M1 shown in Fig. 6.More specifically, in order that obtaining each signal in more clearly observation oscillogram
Waveform, there is illustrated the reverse signal of the voltage signal.In addition, with the approximate of the thick reverse signal shown in phantom
Signal, i.e. the M4 shown in Fig. 6.
As seen from Figure 6, the output signal of mutual inductance circuit is directly proportional to the differential of actual surge current signal.In addition, described
Reverse signal is inversely proportional with actual surge current signal.In other words, the output signal of the integrating circuit and actual surge electricity
Stream signal is directly proportional.The waveform of the reverse signal is approximately triangle M4, more precisely, being approximately two of triangle
Side.It will be appreciated by those skilled in the art that correspondingly, the approximate signal of the output signal of the integrating circuit is similarly approximately
Two sides of triangle.Wherein, a base of the triangle is represented by the duration of surge current, the triangle
High pass corresponding with this base described in crest voltage represent that and the area of the triangle is represented by energy.From
And, the duration can be calculated by expression formula as described above (1).
Fig. 7 is the figure for the life curve for schematically showing Surge Protector.In the figure 7, abscissa represents time, ordinate
Represent the peak point current of surge current.Life parameter shown in Fig. 2 determines that circuit 250 can the longevity based on the Surge Protector
Curve is ordered, the ginseng in the life-span for representing the Surge Protector is determined from the peak inrush current and the duration
Number.
Specifically, for example, in the case where peak inrush current is 2kA, duration to be 100 μ s, life parameter is determined
Circuit 250 can determine that it is intersected on the line of 100 times in the life curve from the life curve shown in Fig. 7.Namely
Say, the Surge Protector can bear that peak inrush current is 2kA, surge current that the duration is 100 μ s 100 times.Change
Yan Zhi, by this surge current, the life-span of the Surge Protector will reduce 1%.In another example, it is in peak inrush current
In the case that 3.5kA, duration are 100 μ s, life parameter determines that circuit 250 can be determined from the life curve shown in Fig. 7,
It is intersected on the line of 10 times in the life curve.That is, by this surge current, the Surge Protector
Life-span will reduce 10%.Thus, the life parameter determines that circuit 250 can determine institute by the way that the life-span of conventional reduction is added up
The residual life of Surge Protector is stated, the parameter is used as.
More than, the device for Surge Protector of the embodiment of the present invention is described referring to figs. 1 to Fig. 7.According to this hair
In the device for Surge Protector of bright embodiment, its peak value and duration are determined according to surge current, and then determine wave
The life parameter of surge protector, so as to effectively indicate the working condition of Surge Protector, reminds the user that thunder and lightning wind
Danger and the validity of Surge Protector, improve Consumer's Experience, and improve the security of Surge Protector and its application scenario.
Method for Surge Protector according to embodiments of the present invention is described next, with reference to Fig. 8.
Fig. 8 is the flow for the key step for schematically showing the method for Surge Protector according to embodiments of the present invention
Figure.As shown in figure 8, first, in step S810, the surge current of input to be converted to the voltage proportional to the surge current
Signal.Then, in step S820, the crest voltage of the voltage signal is obtained.In addition, in step S830, based on the voltage
Signal, determines the duration of the surge current.In step S840, based on pre- between crest voltage and peak inrush current
Relation is determined, it is determined that peak inrush current corresponding with the crest voltage.Next, in step S850, being protected based on the surge
The life curve of device is protected, the longevity for representing the Surge Protector is determined from the peak inrush current and the duration
The parameter of life.Finally, in step S860, the parameter is exported.
Although it is pointed out that step S810-S860 orders are shown in the flow chart shown in Fig. 8, however, this hair
The method for Surge Protector of bright embodiment need not with shown in Fig. 8 order perform, but can be suitably it is each with other
Order is planted to perform.For example, although step S840 is shown as after S830, still, in fact, S840 and S830 can be concurrently
Or reversedly perform.
In one embodiment, the step of duration for determining the surge current, includes：Obtain the voltage signal
Energy；And based on the crest voltage and the energy, calculate the duration of the surge current.
In another embodiment, the step of duration for calculating the surge current, includes：By the way that the voltage is believed
Number waveform be approximately geometric figure, the crest voltage and expression based on the first geometric parameter for representing the geometric figure
The energy of second geometric parameter of the geometric figure, calculating represents the described of the 3rd geometric parameter of the geometric figure
Duration.
In another embodiment, it is determined that the method for the parameter in life-span for representing the Surge Protector includes：It is based on
The life curve of the Surge Protector, is determined by this surge current institute from the peak inrush current and the duration
First degradation of the caused Surge Protector；The Surge Protector of the reading caused by conventional surge current
Second degradation；And based on first degradation and second degradation, determine the parameter.
In another embodiment, the surge current of input is converted to the voltage signal proportional to the surge current
Step includes：The surge current is converted into differential signal；And be integrated the differential signal, to obtain the electricity
Press signal.
In another embodiment, the step of exporting the parameter includes at least one of the following：The parameter is exported
To the indicator associated with the Surge Protector, to indicate the life-span of the Surge Protector by the indicator；By institute
Parameter is stated to export to the supervising device for monitoring the Surge Protector；The parameter is exported to storage device.
In another embodiment, the step of exporting the parameter includes：Export the peak inrush current and described lasting
At least one in time and the parameter.
The operation of each step of the method for Surge Protector of the embodiment of the present invention has been described above reference picture 1- Fig. 7
It is described in detail, is not repeated herein.
In the method for Surge Protector according to embodiments of the present invention, its peak value is determined according to surge current and held
The continuous time, and then the life parameter of Surge Protector is determined, so as to effectively indicate the working condition of Surge Protector, from
And user's thunder and lightning risk and the validity of Surge Protector are reminded, Consumer's Experience is improved, and improve Surge Protector and its application
The security of occasion.
More than, the method and apparatus for Surge Protector according to embodiments of the present invention are described referring to figs. 1 to Fig. 8.
It should be noted that in this manual, term " comprising ", "comprising" or its any other variant are intended to
Nonexcludability is included, so that process, method, article or equipment including a series of key elements not only will including those
Element, but also other key elements including being not expressly set out, or also include being this process, method, article or equipment
Intrinsic key element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that
Also there is other identical element in process, method, article or equipment including the key element.
Furthermore, it is necessary to explanation, in this manual, the statement of similar " Unit first ... ", " Unit second ... " is only
Distinguished in order to convenient in description, and be not meant to its two or more unit that must be implemented as physical separation.In fact,
As needed, the unit can be entirely implemented as a unit, can also be embodied as multiple units.
Finally, in addition it is also necessary to explanation, a series of above-mentioned processing are not only included with order described here in temporal sequence
The processing of execution, and the processing including performing parallel or respectively rather than in chronological order.
Through the above description of the embodiments, those skilled in the art can be understood that the present invention can be by
Software adds the mode of required hardware platform to realize, naturally it is also possible to all implemented by hardware.Understood based on such,
What technical scheme contributed to background technology can be embodied in the form of software product in whole or in part,
The computer software product can be stored in storage medium, such as ROM/RAM, magnetic disc, CD, including some instructions are to make
Obtain a computer equipment (can be personal computer, server, or network equipment etc.) and perform each embodiment of the invention
Or the method described in some parts of embodiment.
In embodiments of the present invention, units/modules can be realized with software, so as to by various types of computing devices.
For example, the executable code module of a mark can include the one or more physics or logic of computer instruction
Block, for example, it can be built as object, process or function.Nevertheless, the executable code of institute's mark module need not
It is physically located together, but can includes being stored in different instructions in different positions, is combined when in these command logics
When together, its Component units/module and the regulation purpose for realizing the units/modules.
When units/modules can be realized using software, it is contemplated that the level of existing hardware technique, it is possible to software
The units/modules of realization, in the case where not considering cost, those skilled in the art can build corresponding hardware circuit
Corresponding function is realized, the hardware circuit is including conventional ultra-large integrated (VLSI) circuit or gate array and such as
The existing semiconductor of logic chip, transistor etc either other discrete elements.Module can also be set with programmable hardware
Standby, field programmable gate array, programmable logic array, programmable logic device etc. are realized.
The present invention is described in detail above, principle and embodiment party of the specific case used herein to the present invention
Formula is set forth, and the explanation of above example is only intended to the method and its core concept for helping to understand the present invention；Meanwhile, it is right
In those of ordinary skill in the art, according to the thought of the present invention, change is had in specific embodiments and applications
Part, in summary, this specification content should not be construed as limiting the invention.
Claims (17)
1. a kind of device for Surge Protector, including：
Change-over circuit, the surge current of input is converted to the voltage signal proportional to the surge current；
Peak value obtains circuit, obtains the crest voltage of the voltage signal；
Duration determination circuit, based on the voltage signal, determines the duration of the surge current；
Peak point current determines circuit, based on the predetermined relationship between crest voltage and peak inrush current, it is determined that with the peak value
The corresponding peak inrush current of voltage；
Life parameter determines circuit, based on the life curve of the Surge Protector, from the peak inrush current and described holds
The continuous time determines the parameter in the life-span for representing the Surge Protector；And
Output circuit, exports the parameter.
2. device as claimed in claim 1, wherein, the duration determination circuit includes：
Energy harvesting circuit, obtains the energy of the voltage signal；And
Counting circuit, based on the crest voltage and the energy, calculates the duration of the surge current.
3. device as claimed in claim 2, wherein, the counting circuit is configured to：
By being approximately geometric figure by the waveform of the voltage signal, based on the first geometric parameter for representing the geometric figure
The crest voltage and represent the geometric figure the second geometric parameter the energy, calculate and represent the geometric figure
The 3rd geometric parameter the duration.
4. device as claimed in claim 3, wherein, the geometric figure is triangle, and the duration represents described three
An angular base, the crest voltage represents the height corresponding with this base of the triangle, and the energy represents institute
State the area of triangle.
5. device as claimed in claim 2, wherein, the peak value obtains the peak value that circuit further keeps the voltage signal
Voltage, the counting circuit is realized by micro-control unit MCU.
6. device as claimed in claim 1, wherein, the peak value obtains circuit, the duration determination circuit, the peak
Value electric current determines that circuit and the life parameter determine circuit by micro-control unit MCU to realize.
7. device as claimed in claim 1, wherein, the life parameter determines that circuit includes：
First processing units, based on the life curve of the Surge Protector, from the peak inrush current and it is described continue when
Between determine the first degradation of the Surge Protector caused by this surge current；
Reading unit, reads the second degradation of the Surge Protector caused by conventional surge current；And
Second processing unit, based on first degradation and second degradation, determines the parameter.
8. device as claimed in claim 1, wherein, the change-over circuit includes：
Mutual inductance circuit, differential signal is converted to by the surge current；And
Integrating circuit, the differential signal is integrated, to obtain the voltage signal.
9. device as claimed in claim 1, wherein, the output circuit is configured to perform at least one of the following：
The parameter is exported to the indicator associated with the Surge Protector, to indicate the surge by the indicator
The life-span of protector；
The parameter is exported to the supervising device for monitoring the Surge Protector；
The parameter is exported to storage device.
10. device as claimed in claim 1, wherein, the output circuit is configured as output to the peak inrush current and institute
State at least one in the duration and the parameter.
11. a kind of method for Surge Protector, including：
The surge current of input is converted to the voltage signal proportional to the surge current；
Obtain the crest voltage of the voltage signal；
Based on the voltage signal, the duration of the surge current is determined；
Based on the predetermined relationship between crest voltage and peak inrush current, it is determined that peak value surge corresponding with the crest voltage
Electric current；
Based on the life curve of the Surge Protector, determine to be used to represent from the peak inrush current and the duration
The parameter in the life-span of the Surge Protector；And
Export the parameter.
12. method as claimed in claim 11, wherein it is determined that the step of duration of the surge current includes：
Obtain the energy of the voltage signal；And
Based on the crest voltage and the energy, the duration of the surge current is calculated.
13. method as claimed in claim 12, wherein, include the step of the duration for calculating the surge current：
By being approximately geometric figure by the waveform of the voltage signal, based on the first geometric parameter for representing the geometric figure
The crest voltage and represent the geometric figure the second geometric parameter the energy, calculate and represent the geometric figure
The 3rd geometric parameter the duration.
14. method as claimed in claim 11, wherein it is determined that the side of the parameter in life-span for representing the Surge Protector
Method includes：
Based on the life curve of the Surge Protector, determined from the peak inrush current and the duration by this wave
Gush the first degradation of the Surge Protector caused by electric current；
Read the second degradation of the Surge Protector caused by conventional surge current；And
Based on first degradation and second degradation, the parameter is determined.
15. method as claimed in claim 11, wherein, the surge current of input is converted to proportional to the surge current
Voltage signal the step of include：
The surge current is converted into differential signal；And
The differential signal is integrated, to obtain the voltage signal.
16. method as claimed in claim 11, wherein, the step of exporting the parameter includes at least one of the following：
The parameter is exported to the indicator associated with the Surge Protector, to indicate the surge by the indicator
The life-span of protector；
The parameter is exported to the supervising device for monitoring the Surge Protector；
The parameter is exported to storage device.
17. method as claimed in claim 11, wherein, the step of exporting the parameter includes：Export the peak value surge electricity
At least one in stream and the duration and the parameter.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP17305258.0A EP3217502B1 (en) | 2016-03-10 | 2017-03-10 | Apparatus and method for surge protection device |
| ES17305258T ES2890976T3 (en) | 2016-03-10 | 2017-03-10 | Apparatus and method for surge protection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610136160 | 2016-03-10 | ||
| CN2016101361608 | 2016-03-10 |
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| CN107179453B CN107179453B (en) | 2020-02-07 |
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| CN201610645273.0A Active CN107179453B (en) | 2016-03-10 | 2016-08-09 | Apparatus and method for surge protector |
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| CN114069855A (en) * | 2021-11-11 | 2022-02-18 | 南方电网电力科技股份有限公司 | System and method for monitoring service life of power secondary overvoltage protection equipment |
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| CN107179453B (en) | 2020-02-07 |
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