CN1058815C - Surging voltage suppressing method - Google Patents
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- CN1058815C CN1058815C CN96114513A CN96114513A CN1058815C CN 1058815 C CN1058815 C CN 1058815C CN 96114513 A CN96114513 A CN 96114513A CN 96114513 A CN96114513 A CN 96114513A CN 1058815 C CN1058815 C CN 1058815C
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Abstract
The present invention relates to a surge suppressing method for designing a three-layer symmetrical surge suppressor using TVSS as a primary member by using a mode of completely absorbing surge energy for being installed to a power end. The symmetrical surge suppressor comprises a semiconductor element, a metal oxide varistor, an arrester pipe, a semiconductor polymeric switch, a hollow inductor, etc. The elements form a three-layer suppression circuit with different surge suppression effects to suppress various kinds of interference surge in electric equipment and provide tight and safe protection for the electric equipment.
Description
The present invention system is about a kind of surge restraint circuit that can absorb surge energy fully, be meant that especially a kind of system is the three-layer type symmetric form inhibition circuit of main member with transient state surge voltage suppression element (Transients Voltage Surge Suppressors-TVSS), be applied to electric power system, and have quick surge inhibit feature, with the inhibition circuit that the high efficiency surge energy that automatically replies absorbs, belong to and suppress the technology category that surge disturbs.
Surge voltage in the electric power system has destructive power for electric equipment; generally overload protection or auto-power-off device (as fuse) are set at power end; though can reach partly effect of control in the mode of cutting off power supply; but this type of device needs with artificial answer after disconnection or changes new product; can not automatically reply; so mostly only be useful in the following family expenses electric power system of 220V; but for sudden high voltage on the electric power system; big electric current; surge voltage is disturbed in the thunderbolt that for example thunder and lightning caused; or the switch of load equipment breaks; drop into caused switch and disturb surge voltage etc.; but all can't effectively suppress, and cause the electric equipment power circuit; digital circuit; the damage of analog circuit etc.
The industrial surge protection element (Surge Protection Device_SPD) that mostly utilizes is as circuit protection; For example:
One, (Metal Oxide Varistor MOV), is fixed on surge voltage below a certain scope with the mode of clamp, and it enters in the electric equipment but residual surge voltage after the MOV action and discharging current are but left with metal oxide varistor; The method is low for operating voltage, the sophisticated electronics of quick action can't effectively be protected, and therefore most of IC elements are still damaged in the electronic equipment.As Fig. 1, be shown in the figure under MOV protection, still by IC wiring board that residual surge burnt through the electron microscope enlarged drawing, hence one can see that, and MOV suppresses to still have its incompleteness for surge.
Two, with lightning-arrest pipe; with the mode that guides surge being guided to it locates; thisly protect the mode of oneself to sacrifice others; and can't deal with problems; and lightning-arrest pipe caused fault under some load variations continues (Holdover) phenomenon also can't effectively be avoided, and therefore breaks down easily and loses the protection effect.
Therefore as can be known, traditional surge restraint circuit gushes voltage, the sense of current sets about suppressing, and difficult all the time symbol is perfect practical.
In order to solve this problem, the present invention one is confrontational, be to be the starting point with the energy that absorbs surge fully, provide a kind of surge restraint circuit not to be meant a kind of surge suppressor that is design with the symmetrical structure kenel, have can recover automatically, fast the surge high efficiency that suppresses, absorb fully with surge energy suppresses circuit, can effectively solve the various surge interference problems of low-voltage power supply system, and the tool industry applications.
The present invention's main purpose, be a kind of with three layers of surge suppressor that mixes application TVSS, according to the present invention, for sensitivity disturb surge and vulnerability disturb surge all have obvious absorption, with the inhibition effect, and the absorptivity of surge energy can reach more than 99.5%, and is a kind of surge restraint circuit not seen before.
Another object of the present invention; but be a kind of commercialization, use on AC Power supply socket or DC power supply circuit separately; also can with the surge suppressor of uses in parallel such as the input of the power circuit of electric equipment, digital circuit, analog circuit, output; to suppress the various interference surges in the electric equipment, make electric equipment be subjected to tight and protection safety.
Surge restraint circuit of the present invention, by means of by the Surge Suppressors in the power circuit of being located at electric equipment, digital circuit, analog circuit, the control circuit, be used to suppress the surge circuit, inhibitor wherein is to absorb the mode of surge voltage energy, by transient state surge voltage suppression element is main member, constitutes three-layer type symmetric form Surge Suppressors.Wherein, three-layer type symmetric form surge suppressor, system comprise by the semiconductor polymeric switch connect with circuit be ground floor, by the lightning-arrest pipe of metal oxide varistor series connection be the second layer, the T type inhibition circuit be made up of inductance and metal oxide varistor is the 3rd layer, the three-layer type symmetric form inhibition circuit that is constituted.
Surge restraint circuit of the present invention constitutes three layers of symmetric form surge suppressor with aforementioned TVSS, can clearly effectively absorb surge energy, suppress surge voltage.The structure of the embodiment of the invention again; in actual manufacturing; on using; three-layer type symmetric form surge restraint circuit can be made monomer; or be connected in electric equipment; thereby can be inserted in AC Power supply socket for using separately; or on the DC power supply circuit; also can with the power circuit of electric equipment; digital circuit; the input of analog circuit; outputs etc. are in parallel to be used; or can be optionally; each layer circuit of three-layer type symmetric form surge restraint circuit separated; several applications is in the circuit of above-mentioned electric equipment; all be able to reach the various interference surges of inhibition, make electric equipment be subjected to tightly and the fully purpose of protection by the mode that absorbs surge energy.
Fig. 1 is destroyed by residual surge for the IC circuit, enlarged drawing under electron microscope.The burned black vestige of lower right-most portion be surge enter the institute cause.
Fig. 2 is an embodiment of the invention circuit diagram.
When Fig. 3 system carried out surge with 0.5 μ S-100KHz 6KV ring surge ripple, polymeric switch both end voltage waveform, last figure were surge current, and figure below is a voltage, and the display voltage value changes with size of current.
Fig. 4 is with 1.2/50 μ S, 6KV, 8/20 μ S, and during 3KA composite wave negative polarity surge surge, polymeric switch both end voltage waveform, last figure are surge current, and figure below is a voltage waveform, and the display voltage value rises with electric current and increases.
Fig. 5 is polymeric switch resolution chart opening time, and polymeric switch opening time is 31.7mS as a result after tested.
Fig. 6 is a general insurance silk break time resolution chart, and the time of blown fuse as a result is 214.5mS after tested.
The arc voltage resolution chart that Fig. 7 is produced when being fused by surge current for the general insurance silk, at 1.2/50 μ S, 6KV, 8/20 μ S, the arc voltage that is produced during general blown fuse under the 3KA composite wave surge surge is up to more than the 14KV.
Fig. 8 shows that lightning-arrest pipe fault continues phenomenon and forms afterflow.
Fig. 9 shows that lightning-arrest pipe fault continues phenomenon and forms periodically power failure.
Figure 10 continues the elimination of phenomenon for lightning-arrest pipe fault.Lightning-arrest pipe series connection MOV is at 1.2/50 μ S, and 6KV, 8/20 μ S, 3KA composite wave surge surge no any fault down continue to have phenomenon with afterflow, recover normal behind the 3.26mS.Last figure is the both end voltage waveform, and figure below is a current waveform.
Figure 11 shows that lightning-arrest pipe series connection MOV no any fault under 0.5 μ S_100KHz 6KV ring wave is surged continues to have phenomenon with afterflow, recovers normal behind the 100 μ S.Last figure is the both end voltage waveform, and figure below is a current waveform.
Figure 12 shows air core inductor at 1.2/50 μ S, 6KV, 8/20 μ S, the discharging current both end voltage waveform of flowing through under the 3KA composite wave surge surge.Last figure is a discharge current waveform, and figure below is a voltage waveform.
Figure 13 shows that air core inductor gushes the discharging current and the both end voltage waveform of flowing through under the impact at 0.5 μ S_100KHz 6KV ring wave.Last figure is a discharge current waveform, and figure below is a voltage waveform.
Figure 14 is MOV two ends clamping voltage waveform is flowed through under the surge surge discharge current waveform and an absorbed energy, is presented at 1.2/50 μ S, 6KV, 8/20 μ S, and MOV absorbs 44 Joule energies under the 3KA composite wave surge surge.
Figure 15 shows that MOV absorbs the 62m Joule energy under 0.5 μ S_100KHz 6KV ring wave is surged.
Figure 16 shows 1.2/50 μ S, 6KV, 8/20 μ S, the composite wave surge of 3KA more than 100 joules behind the symmetric form surge suppressor, enter six and half high-accuracy digital electric meters residual surge voltage, electric current, with waveform monitoring such as energy.
CH (1): surge suppressor clamping voltage
CH (2): surge suppressor discharging current
CH (3): the residual voltage that enters electric equipment
CH (4): the residual surge discharging current that enters electric equipment
Figure 17 is the expansion of Figure 16 trunnion axis different multiplying.
Figure 18 is the expansion of Figure 16 trunnion axis different multiplying.
Figure 19 is the expansion of Figure 16 trunnion axis different multiplying.
The residual surge energy waveform that Figure 20 tries to achieve after mathematical operation for waveform among Figure 19:
CH (1): the residual surge energy waveform that flows into six and half high-accuracy digital electric meters is 34.17mJ
CH (2): absolute value | V| and | the product of I|
CH (3): the residual surge voltage absolute value waveform of six and half high-accuracy digital electric meter power ends
CH (4): the residual surge current absolute value waveform that flows into six and half high-accuracy digital electric meters
Figure 21 shows the embodiment of the invention with the second layer under the above composite wave surge of the 6KV/3KA common mode coupling surge and the 3rd layer of clamping voltage and total discharging current that suppresses circuit, and four groups of waveforms from top to bottom are respectively among the figure:
CH (1): the 3rd layer is suppressed the monolateral discharging current-684A of circuit
CH (2): the 3rd layer is suppressed the monolateral clamping voltage-432V of circuit
CH (3): the total discharging current-3.64KA of surge
CH (4): the second layer suppresses the monolateral clamping voltage-862V of circuit
Figure 22 shows that the embodiment of the invention suppresses the energy that circuit was absorbed with the second layer under the 6KV/3KA composite wave surge common mode coupling surge,
Four groups of waveforms from top to bottom are respectively among the figure:
CH (1): the second layer suppresses the clamp circuit of circuit and the product (VXI) of discharging current
CH (2): the second layer suppresses the monolateral energy that absorbs-30 of circuit joule (VS)
CH (3): the total discharging current-3.6KA of surge
CH (4): the second layer suppresses the monolateral clamping voltage-862V of circuit
Figure 23 shows the embodiment of the invention with output clamping voltage under the 6KV/3KA composite wave surge common mode coupling surge, and four groups of waveforms from top to bottom are respectively among the figure:
CH (1): the 3rd layer is suppressed the monolateral discharging current-688A of circuit
CH (2): suppress the clamping voltage-48V (high common mode is repelled ratio) under the circuit output end common mode pattern
CH (3): the total discharging current-3.66KA of surge
CH (4): the second layer suppresses the monolateral clamping voltage-934 of circuit
Figure 24 is with 1.2/50 μ S, 6KV, 8/20 μ S, and the coupling of 3KA positive polarity composite wave surge common mode is stacked on the AC110V 90 degree phase places (online).
Figure 25 is the expanded view of Figure 24 trunnion axis different multiplying.
Figure 26 is the expanded view of Figure 24 trunnion axis different multiplying.
Figure 27 is the expanded view of Figure 24 trunnion axis different multiplying.
Figure 28 is the expanded view of Figure 24 trunnion axis different multiplying.
Figure 29 is with 1.2/50 μ S, 6KV, 8/20 μ S, and the coupling of 3KA negative polarity composite wave surge common mode is stacked on the AC110V 130 degree phase places (online).
Figure 30 is the expanded view of Figure 29 trunnion axis different multiplying.
Figure 31 is the expanded view of the 29th trunnion axis different multiplying.
Figure 32 is maximum and the minimum value that the second layer suppresses clamping voltage with total discharging current of circuit under the 6KV/3KA composite wave surge norm coupling surge, and four groups waveform is respectively by descending down among the figure:
CH (1): the second layer suppresses the VI product of circuit
CH (2): the second layer suppresses the absorption energy-44 joule (VS) of circuit
CH (3): the total discharging current-2.24KA of surge
CH (4): the second layer suppresses the clamping voltage-1.4KV of circuit
Figure 33 is that the second layer suppresses clamping voltage, discharging current, the VI product of circuit and absorbs energy under the 6KV/3KA composite wave surge norm coupling surge, and four groups of waveforms from top to bottom are respectively among the figure:
CH (1): the second layer suppresses the VI product of circuit
CH (2): the second layer suppresses the absorption energy-44 joule (VS) of circuit
CH (3): the total discharging current-2.24KA of surge
CH (4): the second layer suppresses the clamping voltage-1.4KV of circuit
Figure 34 is the clamping voltage of the 3rd layer of inhibition circuit under the 6KV/3KA composite wave surge norm coupling surge and the maximum and the minimum value of discharging current, and four groups of waveforms from top to bottom are respectively among the figure:
CH (1): the 3rd layer of VI product that suppresses circuit
CH (2): the 3rd layer of absorption energy-8.5 joule (VS) that suppresses circuit
CH (3): the 3rd layer of discharging current-663A that suppresses circuit
CH (4): the 3rd layer of clamping voltage-600V that suppresses circuit
Figure 35 is the 3rd layer of clamping voltage, discharging current, VI product and absorption energy that suppresses circuit under the 6KV/3KA composite wave surge norm coupling surge, and four groups of waveforms from top to bottom are respectively among the figure:
CH (1): the 3rd layer of VI product that suppresses circuit
CH (2): the 3rd layer of absorption energy-8.5 joule (VS) that suppresses circuit
CH (3): the 3rd layer of discharging current-663A that suppresses circuit
CH (4): the 3rd layer of clamping voltage-600V that suppresses circuit
Figure 36 is with 1.2/50 μ S, 6KV, 8/20 μ S, and the coupling of 3KA positive polarity composite wave surge norm is stacked on the AC110V 270 degree phase places (online).
Figure 37 is the expanded view of Figure 36 trunnion axis different multiplying.
Figure 38 is the expanded view of Figure 36 trunnion axis different multiplying.
Figure 39 is the expanded view of Figure 36 trunnion axis different multiplying.
Figure 40 is the expanded view of Figure 36 trunnion axis different multiplying.
Figure 41 figure system is with 1.2/50 μ S, and just level property composite wave surge norm coupling of 6KV, 8/20 μ S, 3KA is stacked in DC_48V and goes up (online).
Figure 42 is the expanded view of Figure 41 trunnion axis different multiplying.
Figure 43 is the expanded view of Figure 41 trunnion axis different multiplying.
Figure 44 is the expanded view of Figure 41 trunnion axis different multiplying,
Figure 45 suppresses the clamping voltage of circuit, total discharging current, VI product and absorbs energy with the second layer under the 0.5 μ S_100KHz 6KV ring surge common mode coupling surge for figure system, and four groups of waveforms from top to bottom are respectively among the figure:
CH (1): the total discharging current of surge
CH (2): the second layer suppresses the clamping voltage of circuit
CH (3): the second layer suppresses the VI product of circuit
CH (4): the second layer suppresses the energy that circuit absorbs
Figure 46 system with under the 0.5 μ S_100KHz 6KV ring surge common mode coupling surge the 3rd layer suppress clamping voltage, discharging current, the VI product of circuit and absorb energy, four groups of waveforms are respectively by descending down among the figure:
CH (1): the 3rd layer of discharging current that suppresses circuit
CH (2): the 3rd layer of clamping voltage that suppresses circuit
CH (3): the 3rd layer of VI product that suppresses circuit
CH (4): the 3rd layer is suppressed the energy that circuit absorbs
Figure 47 system is stacked on the AC110V 270 degree phase places (online) with the coupling of 0.5 μ S_100KHz 6KV ring surge common mode.Last figure is a discharge current waveform, and figure below is the clamping voltage waveform.
Figure 48 is the expanded view of Figure 41 trunnion axis different multiplying.
Figure 49 is the expanded view of Figure 41 trunnion axis different multiplying.
Figure 50 is the expanded view of Figure 41 trunnion axis different multiplying.
Figure 51 system suppresses the clamping voltage of circuit, total discharging current, VI product and absorbs energy with the second layer under the 0.5 μ S_100KHz 6KV ring surge norm coupling surge, and four groups of waveforms from top to bottom are respectively among the figure:
CH (1): the total discharging current of surge
CH (2): the second layer suppresses the clamping voltage of circuit
CH (3): the second layer suppresses the VI product of circuit
CH (4): the second layer suppresses the energy that circuit absorbs
Figure 52 system is with the 3rd layer of clamping voltage, discharging current, VI product and absorption energy that suppresses circuit under the 0.5 μ S_100KHz 6KV ring surge norm coupling surge, and four groups of waveforms from top to bottom are respectively among the figure:
CH (1): the 3rd layer of discharging current that suppresses circuit
CH (2): the 3rd layer of clamping voltage that suppresses circuit
CH (3): the 3rd layer of VI product that suppresses circuit
CH (4): the 3rd layer is suppressed the energy that circuit absorbs
Figure 53 system is stacked on the AC110V270 degree phase place (online) with the coupling of 0.5 μ S_100KHz 6KV ring surge norm.Last figure is a discharge current waveform, and figure below is the clamping voltage waveform.
Figure 54 is the expanded view of Figure 53 trunnion axis different multiplying.
Figure 55 is the expanded view of Figure 53 trunnion axis different multiplying.
Figure 56 is the expanded view of Figure 53 trunnion axis different multiplying.
Figure 57 system is stacked in DC_48V with the coupling of 0.5 μ S_100KHz 6KV ring surge norm and goes up (online).Last figure is a discharge current waveform, and figure below is the clamping voltage waveform.
Figure 58 is the expanded view of Figure 57 trunnion axis different multiplying.
Figure 59 is the expanded view of Figure 57 trunnion axis different multiplying.
Figure 60 is the expanded view of Figure 57 trunnion axis different multiplying.
Figure 61 is the surge capacity parameter that the surge of KEYTEK company manufacturing produces equipment.
Figure 62 is under the off-line case, and vulnerability disturbs the coupling of surge common mode to suppress aptitude tests (absorbing the energy meter indicating value is the monolateral energy of symmetric circuit).
Figure 63 is 1.2/50 μ S, 6KV, 8/20 μ S, and the positive and negative polarity combination of 3KA surge alternately is stacked on AC110V0 degree to the 315 degree phase place, tests with the common mode coupled modes.
Figure 64 is under the off-line case, and vulnerability disturbs the coupling of surge norm to suppress aptitude tests.
Figure 65 is 1.2/50 μ S, 6KV, 8/20 μ S, and the positive and negative polarity combination of 3KA surge alternately is stacked on AC110V0 degree to the 315 degree phase place, tests with the norm coupled modes.
Figure 66 is 1.2/50 μ S, 6KV, 8/20 μ S, and the positive and negative polarity combination of 3KA surge alternately is stacked on the DC_48V, tests with the norm coupled modes.
Figure 67 is under the off-line case, and sensitivity disturbs the coupling of surge common mode to suppress aptitude tests (absorbing energy value is the monolateral energy of symmetric circuit).
Figure 68 is that 0.5 μ S_100KHz 6KV/500A ring ripple is positive and negative, alternating polarity is stacked in AC110V 0 degree to 315 degree phase places, tests with the common mode coupled modes.
Figure 69 is under the off-line case, and sensitivity disturbs the coupling of surge norm to suppress aptitude tests (absorbing energy value is the monolateral energy of symmetric circuit).
Figure 70 is that 0.5 μ S_100KHz 6KV/500A ring surge is positive and negative, alternating polarity is stacked in AC110V 0 degree to 315 degree phase places, tests with the norm coupled modes.
Figure 71 is 0.5 μ S_100KHz 6KV/500A ring surge, and positive and negative alternating polarity is stacked on the DC_48V, tests with the norm coupled modes.
Below cooperate the back accompanying drawing to show and the experimental data chart, the specific embodiment that describes the present invention in detail as after.
The present invention be a kind of be the three-layer type symmetric form inhibitor 10 of main member with TVSS, with " absorbing the energy of surge " is the starting point, be applied to electric power system, and have quick surge inhibit feature, automatically reply, with the high efficiency surge restraint circuit that absorbs surge energy fully.
Aforementioned symmetric form surge suppressor 10, its most preferred embodiment is for example shown in Figure 2, comprise and connect with circuit by semiconductor polymeric switch (poly switch) 11 that to suppress circuit be the 3rd layer for the T type formed for the second layer, by inductance 14 and metal oxide varistor 12 for ground floor, by the lightning-arrest pipe 13 of metal oxide varistor 12 series connection, and formation three-layer type symmetric form surge restraint circuit.
To cause surge energy, electric current significantly to rise when the prominent surge duration when dozens of mS is above, polymeric switch 11 will disconnect (high impedance status), and opening speed is determined by I2, heals greatly when electric current, and then opening speed is faster.Under equivalent environment, 11 opening times of this polymeric switch only are the sixth of general insurance silk fusing time, and the general insurance silk can produce arc voltage when being surge current fusing, but polymeric switch 11 does not have this shortcoming (seeing the attached original paper test analysis in back for details).In addition because of polymeric switch 11 can be put (Resettle) again, the characteristics that need not change be fuse institute can not and, therefore, be designed to this that the ground floor surge suppresses in circuit of the present invention, to give full play to its characteristic.
The consideration that the second layer that surge suppresses in the circuit is based on the avoiding of " the discontinuous effect of V_I characteristic curve ", absorbs with surge energy.Metal oxide varistor 12 closes joint conference with lightning-arrest pipe 13 and causes the discontinuous effect of V_I characteristic curve, then can avoid with series system.When typical lightning surge (1.2/50 μ S) when entering the symmetric form surge restraint circuit, because of time of 50 μ S still deficiency so that polymeric switch 11 disconnect, thereby need to bring into play function by the second layer surge absorbing circuit of the lightning-arrest pipe 13 of metal oxide varistor 12 series connection, surge voltage is suppressed at below the clamping voltage, and absorbs the energy of the contained band of surge in a large number.
Residual surge after second layer surge absorbing circuit suppresses, the T type of forming via inductance 14 and metal oxide varistor 12 suppresses circuit for the 3rd layer again, with inductance 14 suppress surge currents, with metal oxide varistor 12 clamp and energy absorption for the second time, the surge rudimental energy is absorbed into smallly must no longer has a degree of lethality electric equipment 15.
Above-mentioned symmetric form of the present invention suppresses circuit 10, can obtain high common mode and repel ratio, will offset at output after surge enters with common mode pattern (Commo n Mode), makes electric equipment be subjected to fully again protection completely.Electric equipment for floating earth, surge is in norm pattern (Normal Mode) when entering, symmetric form surge restraint circuit 10 of the present invention, become the series connection kenel with inner TVSS, through two-layer surge energy absorb, voltage suppresses, with the electric current restriction, make surge not have lethality to electric equipment 15.
The present invention's the test analysis of each element under the surge environment:
Semiconductor polymeric switch 11, metal oxide varistor 12, lightning-arrest pipe 13, with element such as inductance 14, the behavior pattern test analysis under the surge environment is as follows:
1. semiconductor polymeric switch:
Polymeric switch 11 is positive temperature coefficient elements, and its internal resistance is directly proportional with the internal electrical flow of flowing through, and more then its internal resistance is bigger when electric current, its both end voltage is risen enter high impedance status at last; This behavior also makes current spikes descend and reaches the effect that suppresses surge current.Polymeric switch both end voltage test shown in the accompanying drawing 3,4 of back, wherein Fig. 3 grips bell ripple (Ring wave) when surge carries out surge with 0.5 μ S_100KHz 6KV, the voltage waveform at polymeric switch two ends, the display voltage value changes with size of current.Fig. 4 is with 1.2/50 μ S 6KV, during 8/20 μ S 3KA composite wave (Bi-wave) negative polarity surge surge, and polymeric switch both end voltage waveform, the display voltage value rises with electric current and increases.The polymeric switch opening speed determines by I2, and test result polymeric switch opening time is 31.7mS (as Fig. 5), needs 214.5mS (as Fig. 6) obviously faster than the blown fuse time.When being fused by surge current because of the general insurance silk again, the arc voltage that is produced is far above the surge voltage on the circuit, as shown in Figure 7; At 1.2 μ S 6KV, under the 8/20 μ S 3KV composite wave surge surge, the arc voltage that is produced during the fusing of general insurance silk is up to below the 14KV, and 11 of polymeric switches do not have this phenomenon.
2. lightning-arrest pipe:
Lightning-arrest pipe 13 is guided bone elements, and itself does not absorb energy, and it punctures operation voltage is the function of surge voltage climbing; When nonconducting state, two terminal impedances are up to more than the 10M Ω, in case promptly guide, get rid of surge current fast after puncturing.The maximum shortcoming of lightning-arrest pipe is that fault continues (Hold over) phenomenon and produces afterflow, sees Fig. 8 and 9.Show among Fig. 8 that lightning-arrest pipe fault continues phenomenon and forms afterflow, Fig. 9 shows that lightning-arrest pipe barrier continues phenomenon and forms periodically power failure, and the existence of above-mentioned afterflow will make lightning-arrest pipe burn.In circuit 10 of the present invention, the lightning-arrest pipe 13 of second layer metal oxide rheostat (MOV) 12 series connection, the result shows that there is no the afterflow situation exists (as Figure 10) after tested, lightning-arrest pipe series connection MOV is at 1.2/50 μ S 6KV, 8/20 μ S3KA composite wave surge surge no any fault down continues to have situation with afterflow, recovers normal behind the 3.26mS; Figure 11 shows that lightning-arrest pipe series connection MOV no any fault under 0.5 μ S_100KHz 6KV ring wave is surged continues to have situation with afterflow, recovers normal behind the 100 μ S.
3. air core inductor:
Surge impedance (Z=LS/CS) and surge current are inversely proportional to, and the surge impedance value is higher, and then the surge current value is lower, so inductance 14 can suppress surge current, reduce the clamping voltage of metal oxide varistor (MOV) 12, reach the effect that absorbs fully.Inductance both end voltage waveform is seen shown in Figure 12,13 under the surge surge, and Figure 12 shows air core inductor at 1.2/50 μ S6K V, the discharging current and the both end voltage waveform of flowing through under the 8/20 μ S 3KA composite wave surge surge; Figure 13 shows air core inductor at 0.5 μ S_100KHz 6KV, discharging current and both end voltage waveform that the ring wave is surged and flowed through down.
4. metal oxide varistor (MOV):
Metal oxide varistor (MOV) is non-linear surge absorption component, and itself can absorb surge energy.The clamping voltage value of MOV determines by surge current, the clamping voltage waveform of MOV and the discharge current waveform of flowing through determine its energy that absorbs (
, t1-t2 is the time that current waveform exists).The clamping voltage waveform of MOV is seen shown in Figure 14,15 with the discharge current waveform of being flowed through under the surge surge.Among Figure 14, show MOV at 1.2/50 μ S 6KV, absorption 44 Joule energies under the 8/20 μ S 3KA composite wave surge surge (
); Among Figure 15, show that MOV surges down at 0.5 μ S_100KHz 6KV ring wave, absorption 62m Joule energy (
)。
Circuit element of the present invention, via above-mentioned test analysis as can be known each element suppress functional on the circuit at the three-layer type symmetric form; On electric power system, can be by means of circuit of the present invention, suppress various interference surges in the electric equipment by the mode of " absorption surge energy ", make electric equipment be subjected to tight and protection safety.
High efficiency symmetric form surge restraint circuit of the present invention, suppress the integration test analysis of ability:
This circuit is the surge source with the surge generation equipment that KEYTEK company makes, and its surge produce power sees table one for details.Under off-line (Off-Line) and online (On-Lin) situation, be protected object with PC, communication apparatus, utilize vulnerability to disturb 30 seconds at interval continuous surges of surge more than 200 times; Sensitivity is disturbed surge, and surge was more than 1000 times continuously at interval in 10 seconds, and all in the test process, PC, the equipment of reading over do not have phenomenons such as damage or action.Its surge method and test record are as follows:
(1) energy absorption efficiency analysis:
The absorption energy of surge inhibition method=(the surge source contains the surge energy of band)-(entering the residual surge energy of electric equipment).
The surge energy that contains band in the surge source is under the known situation, to use the digital oscilloscope with digital operation function, calculates the residual surge energy that enters electric equipment with (E=∫ (VXI) dt), can know the energy that surge inhibition method is absorbed.Among Figure 16,17,18 and 19, be that composite wave surge with 1.2/50 μ S 6KV, the above energy of 8/20 μ S 3KA100 joule overlaps the AC110V power supply, through symmetric form surge suppressor of the present invention, enter again six and half high-accuracy digital electric meters residual surge voltage, electric current, with waveform monitoring such as energy.Wherein Figure 17,18 and 19 is the expansion of trunnion axis different multiplying among Figure 16; From top to bottom be respectively surge suppressor circuit inner clamping voltage, discharging current, the residual surge voltage that enters electric equipment and residual discharging current.In the waveform of Figure 20 from top to bottom first waveform for the residual surge energy waveform that enter six and half high-accuracy several ammeters of Figure 19 waveform through being tried to achieve after the mathematical operation be 34.1m joule (under the vector pattern, try to achieve energy value unit with integration and represent) with VS.
As the above analysis, surge restraint circuit of the present invention can absorb the surge energy more than 99.96 joules in 100 Joule energies, and the surge absorption efficiency is more than 99.9%, almost external surge energy is suppressed to absorb fully.
(2) vulnerability is disturbed surge test (Vulnerability interference surge testing):
Vulnerability disturbs surge test, main purpose are whether the tested thing of check has because of surge energy enters and burn or the phenomenon of fault.
A. under the off-line case, vulnerability disturbs the coupling of surge common mode to suppress aptitude tests:
To make up surge: more than the open circuit voltage 1.2/50 μ S 6KV, more than the short circuit current 8/20 μ S 3KA, output more than 100 joules energy circuit of the present invention carried out common mode coupled mode surge suppress aptitude tests, clamping voltage, discharge current waveform see Figure 21,22 and 23 for details, each parameter value sees Table two.
B. single-phase three-wire formula, under the off-line case, vulnerability disturbs the coupling of surge common mode to suppress aptitude tests:
With 1.2/50 μ S, the above composite wave surge positive-negative polarity of 6KV, 8/20 μ S 3KA replaces, and is stacked on the different phase place of AC110V, with general PC is load, at interval 30 each seconds, carries out 64 continuous surge tests of two circulations, computer record sees Table three in detail, and PC does not have any abnormal case to be taken place.Under the off-line case, the positive polarity surge clamping voltage waveform of photographing after time shaft launches is for several times seen shown in Figure 24,25,26,27 and 28.Negative polarity surge clamping voltage waveform is seen shown in Figure 29,30 and 31.
The clamping voltage average is 150V for the 285V standard deviation value
Total discharging current average 3306A standard deviation value is that 64A is
Common mode surge on the AC110V power supply is under the symmetric form surge restraint circuit suppresses, and the AC110V power supply has recovered normal in the 8mS.
C. under the off-line case, vulnerability disturbs the coupling of surge norm to suppress aptitude tests:
With 1.2/50 μ S, 6KV, 8/20 μ S, 3KA composite wave surge carry out norm coupled mode surge to circuit of the present invention and suppress aptitude tests, and clamping voltage, discharge current waveform see Figure 32,33,34 and 35 for details, and each parameter value sees Table four.
D.AC single-phase three-wire formula, under the online situation, vulnerability disturbs the coupling of surge norm to suppress aptitude tests:
With 1.2/50 μ S, 6KV, 8/20 μ S, the above composite wave surge of 3KA positive-negative polarity are alternately, be stacked on the different phase place of AC110V, work as load, 30 seconds at interval with general PC, carry out 64 continuous surge tests of two circulations, computer record sees Table 5 in detail, and PC does not have any abnormal case to be taken place.Under the online situation, the surge clamping voltage waveform of photographing after time shaft launches is for several times seen shown in Figure 36,37,38,39 and 40.
Output clamping voltage average is 123V for the 602V standard deviation value
Total discharging current average is 34A for the 2737A standard deviation value
E.DC_48V, under the online situation, vulnerability disturbs the coupling of surge norm to suppress aptitude tests:
With 1.2/50 μ S, 6KV, 8/20 μ S, the above composite wave surge of 3KA positive-negative polarity are alternately, be stacked on the DC_48V, work as load, 30 seconds at interval with the regular phone exchange, carry out 20 continuous surge tests of two circulations, computer record sees attached list six in detail, and telephone exchange does not have any abnormal case to be taken place.Under the online situation, the surge clamping voltage waveform of being photographed after time shaft launches is for several times seen shown in Figure 41,42,43 and 44.
Output clamping voltage average is 490V for the 1456V standard deviation value
Total discharging current average is 59A for the 2564A standard deviation value
(3) sensitivity is disturbed surge test (Susceptibility ineterference surge testing):
Sensitivity is disturbed the surge test main purpose, is whether the tested thing of check has the phenomenon that misoperation takes place soon because of the surge rate of climb.
A. under the off-line case, sensitivity disturbs the coupling of surge common mode to suppress aptitude tests:
Gush with the ring wave: open circuit voltage 0.5 μ S_100KHz 6KV, more than the short circuit current 500A, exporting 7 joules carries out common mode coupled mode surge to circuit of the present invention and suppresses aptitude tests, clamping voltage, discharge current waveform see Figure 45,46 for details, and each parameter value sees Table seven.
B. sensitivity disturbs the coupling of surge common mode to suppress under aptitude tests (online) situation:
Gush with 0.5 μ S_100KHz 6KV ring wave: be stacked on the different phase place of AC110V, work as load with general PC, 10 seconds at interval, carry out five and follow 400 continuous surge tests, computer record sees attached list eight in detail, and PC does not have any abnormal case to be taken place.Under the online situation, the surge clamping voltage waveform of being photographed after time shaft launches is for several times seen shown in Figure 47,48,49 and 50.
Output clamping voltage average is 162V for the 523V standard deviation value
Total discharging current average is 13A for the 493A standard deviation value
Common mode surge on the AC110V power supply is under the symmetric form surge restraint circuit suppresses, and the AC110V power supply has recovered normal in the 40 μ S.
C. sensitivity disturbs the coupling of surge norm to suppress aptitude tests (under the online situation):
Gush with the ring wave: open circuit voltage 0.5 μ S_100KHz 6KV, more than the short circuit current 500A, exporting 7 joules carries out norm coupled mode surge to circuit of the present invention and suppresses aptitude tests, clamping voltage, discharge current waveform see Figure 51 and 52 for details, and each parameter value sees Table nine.
D. sensitivity disturbs the coupling of surge norm to suppress aptitude tests (under the online situation):
Gush with 0.5 μ S_100KHz 6KV ring wave: be stacked on the different phase place of AC110V, work as load with general PC, 10 seconds at interval, carry out 400 continuous surge tests of five circulations, computer record sees attached list ten in detail, and PC does not have any abnormal case to be taken place.Under the online situation, the surge clamping voltage waveform of being photographed after time shaft launches for several times sees for details shown in Figure 53,54,55 and 56.
Output clamping voltage average is 129V for the 1061V standard deviation value
Total discharging current average is 6A for the 386A standard deviation value
E.DC_48V, under the online situation, sensitivity disturbs the coupling of surge norm to suppress aptitude tests:
Gush with 0.5 μ S_100KHz 6KV ring wave: be stacked on the DC_48V, work as load with the regular phone exchange, 30 seconds at interval, carry out 200 continuous surge tests of 20 circulations, computer record sees attached list 11 in detail, and telephone exchange does not have any abnormal case to be taken place.Under the online situation, the surge clamping voltage waveform of being photographed after time shaft launches is for several times seen shown in Figure 57,58,59 and 60.
Output clamping voltage average is that the total discharging current average of 209V is 23A for the 333A standard deviation value for the 872V standard deviation value
Claims (4)
1. surge restraint circuit, system is by the surge suppressor in the power circuit of being located at electric equipment, digital circuit, analog circuit, the control circuit, be used for suppressing to disturb surge, it is characterized in that, inhibitor wherein is to absorb the mode of surge energy, is main member by transient voltage surge suppression element, constitute three-layer type symmetric form surge suppressor
Wherein, described three-layer type symmetric form surge suppressor, system comprise by the semiconductor polymeric switch connect with circuit be ground floor, by the lightning-arrest pipe of metal oxide varistor series connection be the second layer, the T type inhibition circuit be made up of inductance and metal oxide varistor is the 3rd layer, the three-layer type symmetric form inhibition circuit that is constituted.
2. the surge restraint circuit described in claim 1 is characterized in that, described three-layer type symmetric form surge suppressor is to can be made into the independent interference surge inhibition protected location that uses on following low-voltage alternating current power supply of 220V or the socket.
3. the surge restraint circuit described in claim 1 is characterized in that, described three-layer type symmetric form surge suppressor is to can be made into the independent interference surge inhibition protected location that uses on the DC power supply circuit.
4. the surge restraint circuit described in claim 1 is characterized in that, described three-layer type symmetric form surge suppressor is wherein each layer circuit separation can be applied to respectively in the circuit of various electric equipments.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96114513A CN1058815C (en) | 1996-10-30 | 1996-10-30 | Surging voltage suppressing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96114513A CN1058815C (en) | 1996-10-30 | 1996-10-30 | Surging voltage suppressing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1181651A CN1181651A (en) | 1998-05-13 |
| CN1058815C true CN1058815C (en) | 2000-11-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96114513A Expired - Fee Related CN1058815C (en) | 1996-10-30 | 1996-10-30 | Surging voltage suppressing method |
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| Country | Link |
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| CN (1) | CN1058815C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100403685C (en) * | 2005-07-19 | 2008-07-16 | 上海华为技术有限公司 | Communication link system and its method with protective function |
| CN100466447C (en) * | 2004-07-02 | 2009-03-04 | 株式会社日立产机系统 | Frequency converter, motor, motor drive system and maintenance method for motor drive system |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101583497B1 (en) * | 2010-03-19 | 2016-01-08 | 알까뗄 루슨트 | Machine-type communication method and system and cell-search method and device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1076559A (en) * | 1992-03-16 | 1993-09-22 | 长沙市环宇新科技研究开发所 | A kind of AC power over-voltage protection method and device |
| CN2220699Y (en) * | 1994-10-15 | 1996-02-21 | 苏邦礼 | Lightning arrester for transmission line |
-
1996
- 1996-10-30 CN CN96114513A patent/CN1058815C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1076559A (en) * | 1992-03-16 | 1993-09-22 | 长沙市环宇新科技研究开发所 | A kind of AC power over-voltage protection method and device |
| CN2220699Y (en) * | 1994-10-15 | 1996-02-21 | 苏邦礼 | Lightning arrester for transmission line |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100466447C (en) * | 2004-07-02 | 2009-03-04 | 株式会社日立产机系统 | Frequency converter, motor, motor drive system and maintenance method for motor drive system |
| CN100403685C (en) * | 2005-07-19 | 2008-07-16 | 上海华为技术有限公司 | Communication link system and its method with protective function |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1181651A (en) | 1998-05-13 |
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