CN1395346A - Protecting equipment, protecting device and protecting method for circuit - Google Patents
Protecting equipment, protecting device and protecting method for circuit Download PDFInfo
- Publication number
- CN1395346A CN1395346A CN 02127253 CN02127253A CN1395346A CN 1395346 A CN1395346 A CN 1395346A CN 02127253 CN02127253 CN 02127253 CN 02127253 A CN02127253 A CN 02127253A CN 1395346 A CN1395346 A CN 1395346A
- Authority
- CN
- China
- Prior art keywords
- semiconductor switch
- evaluation component
- release conditions
- turn
- satisfying
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/40—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to ratio of voltage and current
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/08—Modifications for protecting switching circuit against overcurrent or overvoltage
- H03K17/081—Modifications for protecting switching circuit against overcurrent or overvoltage without feedback from the output circuit to the control circuit
- H03K17/0814—Modifications for protecting switching circuit against overcurrent or overvoltage without feedback from the output circuit to the control circuit by measures taken in the output circuit
- H03K17/08142—Modifications for protecting switching circuit against overcurrent or overvoltage without feedback from the output circuit to the control circuit by measures taken in the output circuit in field-effect transistor switches
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/08—Modifications for protecting switching circuit against overcurrent or overvoltage
- H03K17/082—Modifications for protecting switching circuit against overcurrent or overvoltage by feedback from the output to the control circuit
- H03K17/0822—Modifications for protecting switching circuit against overcurrent or overvoltage by feedback from the output to the control circuit in field-effect transistor switches
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H1/00—Details of emergency protective circuit arrangements
- H02H1/04—Arrangements for preventing response to transient abnormal conditions, e.g. to lightning or to short duration over voltage or oscillations; Damping the influence of dc component by short circuits in ac networks
Abstract
The present invention relates to protecting equipment, protecting device and protecting method for circuit, wherein, in order to get continuous power supply by electric line (5) protection system (1) even in the circumstances of the influence caused by disturbance that may be appear, the protection system (1) having two fault sensors (4a,4b). The first (4a) is in active connection to a semiconductor switch (6) fitted in the line (5), which sends, when a first trigger condition is fulfilled, a disconnection signal (7a) to the switch (6), which causes it to open the line circuit. The second sensor (4b) interrupts the disconnection operation when a second triggers condition is not satisfied.
Description
Technical field
The present invention relates to be used for protection equipment, protective device and the guard method of electric line, wherein,, provide or realize required defencive function by confirmable release conditions by forming first and second evaluation component that function is connected with a semiconductor switch.
Wherein said evaluation component has the defencive function to overcurrent, and semiconductor switch is as protection switch.Be interpreted as a switch or switching device here for protection switch, it changes on off state according to switching signal.This switch especially under the situation of short circuit, has enough big switching capability when opening or turn-offing the part of a circuit, a drive unit, an electrical appliance or an equipment.
Background technology
The basic defencive function of evaluation component is to stop overcurrent, especially short circuit current, and this for example is by causing that the protection relay of the turn off process of protection switch realizes when the short circuit.This defencive function also can be realized by the overcurrent identification circuit sometimes.Use a kind of so-called shunt resist technology on the other hand, this technology is provided with impedance measurement to the protection range of a setting under the support of set algorithm.This class of algorithms is similar to the algorithm of distance protection technology.The distance protection technology is used basically in middle pressure and/or high pressure technique.
The different embodiments of protection switch is by professor G ü nter doctor's Springer electronic technology specialized textbook, Europa-Lehrmittel publishing house, and Europa-Nr.30138 (European book number) is known.Known in addition above-mentioned distance protection technology is shown numerical protection technology specialty textbook at Doctor of Engineering Hans-Joachim Herrmann, and VDE publishes Co., Ltd, among the ISBN 3-8007-1850-2, it is described.
In the distance protection technology, according to prior art cited above, overcurrent protection mechanism and distance protection unit are connected to each other by a logical connection.Wherein cut-off signals only satisfy " with " just can occur during condition.
As semiconductor switch being used for the function of protection switch, then under the situation of short circuit, there is the necessity of very fast shutoff, have very little energy absorption capability because compare it with the mechanical protection switch.Must in several μ s, turn-off under the situation of Si semiconductor switch, so that maximum load can not be exceeded according to avalanche energy or SCSOA (short circuit area of safety operaton) affiliated, that allow.
Owing to require response very fast, the evaluation component that protection switch is worked, especially may cause the mistake of protection switch to discharge to the mechanism of overcurrent protection and the evaluation component of distance protection mechanism.This may be owing to not providing the sufficiently long evaluation time to determine that accurately actual working state causes.Mistake discharge can be for example by the interference of impulse form, especially impact by impulse current or by making current and cause.
Above shortcoming is that release will cause turn-offing by mistake in all cases, can not guarantee therefrom to power constantly.
Summary of the invention
Therefore, the technical problem to be solved in the present invention is, a kind of protection equipment that is connected with semiconductor switch is provided, and also can power continuously even if utilize this equipment interference effect may occur.In addition, a kind of relevant therewith protective device and guard method are also provided.
The technical problem to be solved in the present invention is to realize that by a kind of protection equipment that is used for electric line it has first and second evaluation component,
-wherein, described first evaluation component forms function with semiconductor switch in being located at electric line and is connected, and when satisfying first release conditions, exports a cut-off signals to semiconductor switch, turn off process of generation in semiconductor switch thus, and
-wherein, described second evaluation component is interrupted this turn off process when not satisfying second release conditions.
Can realize by this protection equipment: operation requirement and relevant therewith continued power for circuit to be protected can be met based on its evaluation and release characteristics.Comprising making quick response when the short circuit, avoiding mistake to discharge to the full extent and the interference that is occurred is verified as quick as thought.
The turn off process itself that interrupts by the present invention just can be in the unnecessary shutoff with part of avoiding circuit, functional unit or equipment under the condition of work of interference, and realizes continued power thus.Wherein, the turn off process that has begun is interrupted, and rebulids electrical connection to a certain extent.This method is impossible realize on traditional mechanical protection switch.Have only by the knowledge frequently that utilizes the partially conductive that semiconductor switch exists and realize step of the present invention.
For the technical problem of electric line protective device, the present invention solves by a kind of protective device that is used for electric line,
-it has first and second evaluation component and a semiconductor switch, this semiconductor switch is located in the electric line and forms function with first evaluation component and is connected, and when satisfying first release conditions, to cut-off signals of semiconductor switch output, in semiconductor switch, produce a turn off process thus, and
-wherein, second evaluation component is interrupted this turn off process when not satisfying second release conditions.
The present invention is particularly useful for the part of functional unit, electrical appliance or the equipment of electric line and power supply and back connection.
Two evaluation component and semiconductor switch advantageously are designed to be applicable to low pressure, the electrical network of medium-pressure or high pressure scope.This can make the present invention be applied to various applications, can reduce investment outlay thus and a kind of standardized protective device of selection use simultaneously.
According to the present invention, second evaluation component comprises sampling and holding member, a computing unit, a comparing unit and time flow control unit that is used for curtage.Can under facts have proved the situation of effective element, use draw the evaluation of reliable especially and insurance in this way.
Best, semiconductor switch has a piezo-resistance that is connected in parallel (Varistor).Here this piezo-resistance is advantageously used for the protective device of semiconductor switch.This is particularly useful for occurring superpotential situation.
Advantageously, the first evaluation device designed to be used the overcurrent protection mechanism of short circuit, and second evaluation component is designed to have the distance protection mechanism of electric network impedance measurement function.Form the effective defencive function with redundancy thus, this improves the evaluation characteristic and power supply is reduced the sensitiveness of disturbing.
During the commutation course of semiconductor switch, take place at the latest according to turn off process of the present invention.What wherein have advantage is, change of current time of semiconductor switch is used for checking disturbs, so that interrupt cut-off signals in case of necessity.
For the technical problem of electric line guard method, the present invention solves by a kind of guard method that is used for electric line:
-wherein, first evaluation component acts on the semiconductor switch that is located in the electric line, and when satisfying first release conditions,, in semiconductor switch, produce a turn off process thus to cut-off signals of semiconductor switch output, and
-wherein, one second evaluation component is interrupted this turn off process when not satisfying second release conditions.
Foregoing advantage equally also is fit to this method.
Preferably, second release conditions is inquired after first release conditions.The inquiry structure of this being similar to " cascade " can be interrupted one thus because mistake discharges the cut-off signals that has sent to semiconductor switch, with function or the assurance power supply of keeping circuit.
Inquired side by side with first release conditions at least in part according to the present invention's second release conditions.This inquiry strategy helps to verify early to disturb to reach to be supported semiconductor switch is transmitted cut-off signals in case of necessity.Can save time by this working method arranged side by side.
In another execution mode of the present invention, will eliminate cut-off signals and/or semiconductor switch will be imported a connection signal in order to interrupt this turn off process.The advantage of doing like this is a cut-off signals of not only having eliminated evaluation component, and then can drive reclosing of semiconductor switch.Can keep the high-effect or continued power of circuit thus.
Description of drawings
Below will other advantage of the present invention and details be described by accompanying drawing.They are used to introduce the design as basis of the present invention.Accompanying drawing is summarily represented:
Fig. 1 is a protection equipment and the protective device as a current circuit part,
Fig. 2 is a semiconductor switch with change of current branch road,
Fig. 3 is second evaluation component with functional unit, and
Fig. 4 a-4e be one group should protection equipment and the process oscillogram of the operation principle of guard method.
Embodiment
Hereinafter part identical in the accompanying drawing is represented or represented with similar mark according to circumstances with identical mark.
At first describe the situation of current circuit, describe function then in detail.
Fig. 1 shows protection equipment 1 and as the protective device 2 of the sub section in monophase current loop 3.Current circuit 3 comprises that has an affiliated voltage U
NetzPower supply, by first and second impedance component L
iAnd R
iThe electric network impedance Z that forms, first and second impedance voltage U under it
LiAnd U
RiRepresent side by side at this.Current circuit 3 also comprises the load L of a supposition in addition
LR, it is made up of a reactance L and a resistance R.That corresponding with them is affiliated first and second load voltage U
LAnd U
R
Load L
LRBy electric line 5 with a power supply, be connected as the generator G in a power plant or the supply transformer of a factory.Protection equipment 1 comprises first and second evaluation component 4a and 4b.Wherein, the first evaluation component 4a be located at circuit 5 in be used as protection switch semiconductor switch 6 form functions and be connected.This semiconductor switch 6 has the switching voltage U under in the of
s
The first evaluation component 4a be designed to the I of overcurrent protection mechanism＞＞, and the second evaluation component 4b be designed to the Z of distance protection mechanism＜＜.
When satisfying first release conditions, the first evaluation component 4a flows to 6 one cut-off signals 7a of semiconductor switch, produces a turn off process thus in semiconductor switch 6.When not satisfying second release conditions, the second evaluation component 4b interrupts this turn off process.Here these release conditions (especially the Z of distance protection mechanism＜＜in) can comprise the algorithm in the distance protection technology.No matter be that protection equipment 1 or protective device 2 all are that the mains supply in low pressure, middle pressure and the high pressure range is designed.
Here release conditions is interpreted as at least one criterion relevant with circuit 5, and evaluation component 4a and 4b depend on these criterions.Satisfying or do not satisfying under the situation of these criterions, evaluation component 4a and 4b make corresponding reaction according to its evaluation characteristic.Wherein the second evaluation component 4b for example takes defencive function to the overcurrent that occurs by identification circuit, especially to short circuit current.
Each is powered first and second evaluation component 4a and 4b by a transducer 22a or a 22b who is used for current i or voltage u.Current i flows through a semiconductor switch 6 in circuit 5.Voltage u will measure by first and second load elements in semiconductor switch 6 backs.
Semiconductor switch 6 comprises at least one semiconductor subassembly.Usually it can be used as transistor, especially MOSFET (mos field effect transistor), IGBT (insulated gate bipolar transistor, Insulated-Gate-Bipolar-Transistor) or SCCT (carborundum common-emitter common-base transistor) implement.(the integrated grid change of current transistor Integrated-Gate-Commutated-Transistor) is implemented equally also to can be used as GTOT (can turn-off gridistor) or IGBT.Here the configuration of in semiconductor switch 6, using both can be reverse parallel connection also can be differential concatenation.
Fig. 2 shows the detailed view of the semiconductor switch 6 with change of current branch road 8, and this change of current branch road is connected and comprises a piezo-resistance 9 in parallel with semiconductor switch 6.Here the semiconductor subassembly that constitutes semiconductor switch 6 is a differential concatenation.Also can use the identical assembly of Zener diode or function to replace piezo-resistance 9, can also use a buffer circuit (excess voltage protection) with RCD element (resistance coil delay element).
Fig. 3 shows the second evaluation component 4b and is located at wherein functional unit.These functional units are specially: first sampling and the holding unit 10 with the first input end 11 that is used for voltage u, second sampling and the holding member 12 with second input 13 that is used for current i, 14, one of a computing unit has comparing unit 15 and time flow control unit 17 of output 16.Comparing unit 15 is exported a control signal 18 on output 16.Carry out Digital Signal Processing here, wherein algorithm is stored as program and can realizes accurate release characteristics curve simply thus.
Fig. 4 a to 4e shows the process oscillogram of the operation principle of one group of protection equipment 1 and this new guard method 19.Fig. 4 a shows according to the current i of Fig. 1 and time relation.This current i can be relevant with a plurality of operating states.When operate as normal or overload work, will correspondingly flow through operating current or overload current.Current i is at diagram boundary 0 and i when operate as normal
MaxBetween change.If the situation of impulse current or overcurrent, then electric current will be above the threshold value i of maximum current
Max
As according to shown in Fig. 4 a, at first t constantly
1Reach second moment t
2Between operating current i obviously be lower than the threshold value i of maximum current
MaxOwing to the reason of disturbing, the interference that for example causes by a current spike 20, current i is risen, at this moment current spike 20 surpasses the threshold value i of maximum current
MaxIn the case, this current spike 20 does not show as overload current.
Fig. 4 b show the I of overcurrent protection mechanism＞＞oscillogram, the characteristic of this mechanism is by time t reflection.The I of overcurrent protection mechanism＞＞monitoring current is at as shown in Figure 4 boundary 0 and i
MaxBetween variation, especially occurring under the situation of short circuit current.The I of this overcurrent protection mechanism＞＞have two on off states, promptly be worth 0 and be worth 1.These on off states are represented whether satisfying of release conditions, and its intermediate value 1 representative " satisfying " " is not satisfied " and be worth 0 representative.
If current i is at boundary 0 and i
MaxBetween change, then on off state value of remaining on 0.If the situation of overcurrent, electric current surpasses the threshold value i of maximum current
Max, then the I of overcurrent protection mechanism＞＞on off state for the value 1.On off state can be found out from the first switch transition 21a to the conversion of value 1 from being worth 0.Because at the 3rd moment t
3Last electric current is lower than the threshold value i of maximum current again
Max, the I of overcurrent protection mechanism＞＞on off state from being worth 1 value of changing to 0, this can find out from the 3rd switch transition 21c shown in Fig. 4 b.
Fig. 4 c represents the relation of electric network impedance Z and the time t relevant with previous figures.This electric network impedance Z represents existing impedance variation in the power supply.This electric network impedance Z can be relevant with a plurality of operating states.Operate as normal or overload duration of work electric network impedance Z show as corresponding to the current curve of current i and the I of overcurrent protection mechanism＞＞the boundary condition of on off state.
Electric network impedance Z is higher than minimum electric network impedance Z when operate as normal
MinBoundary.When overcurrent occurring, electric network impedance may be lower than minimum electric network impedance Z
MinBecause relate to rush of current this moment, though the curve of electric network impedance Z is towards minimum electric network impedance Z
MinThe direction of boundary changes, but it can not be lower than described boundary.
Fig. 4 d represent a Z of distance protection mechanism＜＜performance plot, its characteristic is by time t reflection.The Z of this distance protection mechanism＜＜monitoring electric network impedance Z remains on the minimum electric network impedance Z shown in Fig. 4 c
MinBoundary in.The Z of this distance protection mechanism＜＜be in a kind of so-called " readiness ", give lasting monitoring thus to electric network impedance Z.Can also be at second moment t
2By the I of overcurrent protection mechanism＞＞the first switch transition 21a trigger the Z of this distance protection mechanism＜＜.For example, Fig. 4 d shows proving time t
Ver, it provides checking and disturbs the required time interval.
The Z of this distance protection mechanism＜＜have two on off states, promptly be worth 0 and be worth 1.If electric network impedance Z is at minimum electric network impedance Z
MinBoundary on change, then the on off state value of being retained in 0.If be lower than this minimum electric network impedance Z
MinThe situation of boundary, then the Z of this distance protection mechanism＜＜on off state for the value 1.
Fig. 4 e shows the oscillogram of the relation of switching signal S and time t.This switching signal S directly acts on semiconductor switch 6.This switching signal S can by the I of overcurrent protection mechanism＞＞and/or the Z of distance protection mechanism＜＜control.This switching signal S can have two kinds of on off states, promptly is worth 0 and be worth 1.
The Z of distance protection mechanism＜＜than the I of overcurrent protection mechanism＞＞have higher control priority, i.e. the distance protection Z of mechanism＜＜control signal than the I of overcurrent protection mechanism＞＞control signal have higher priority.Equally, the Z of distance protection mechanism＜＜control signal can with the I of overcurrent protection mechanism＞＞on off state reset.If at second moment t
2Cause the first switch transition 21a, then by the I of overcurrent protection mechanism＞＞control signal make switching signal become value 1 from being worth 0.This by among Fig. 4 e at second t constantly
2Second switch conversion 21b represent.
Here by shown in Fig. 4 d by the Z of distance protection mechanism＜＜proving time t that checking is disturbed
VerDo not draw to the I of overcurrent protection mechanism＞＞affirmation of release characteristics.This checking result acts on switching signal S like this, promptly at the 4th switching time t
4Make it become value 0, interrupted cut-off signals 7a thus from being worth 1.It is represented by the 4th switch transition 21d.
Proving time t shown in Fig. 4 d
VerBegin under the situation of overcurrent occurring at the latest, and before turn off process finishes, finish at the latest, especially end before the change of current time of semiconductor switch 6 finishes.The turn off process of semiconductor switch 6 before disconnecting, power supply is interrupted in time.
The release of the connection signal 7b that the resetting of switching signal S causes semiconductor switch 6.Because disturb without any other, the current i shown in Fig. 4 a becomes normally, and shown in Fig. 4 c at moment t
3It is stable that electric network impedance Z becomes behind a uphill process again.Can also pass through the I of this overcurrent protection mechanism＞＞realize indirect control to semiconductor switch 6.
Substantive design of the present invention is: at the guard method that is used for electric line 5 19, the first evaluation component 4a according to Fig. 4 a to 4d the semiconductor switch 6 that is located in the circuit 5 shown in Figure 1 is worked.The first evaluation component 4a here as the I of overcurrent protection mechanism＞＞.When satisfying first release conditions, to the switching signal S of a cut-off signals 7a form of semiconductor switch 6 inputs, in semiconductor switch 6, produce a turn off process thus, it is equivalent to a semiconductor switch that prevents short circuit.
Here, as the Z of distance protection mechanism＜＜the second evaluation component 4b when not satisfying its release conditions, interrupt this turn off process.To eliminate switching signal S and/or semiconductor switch 6 will be imported connection signal 7b in order to interrupt this turn off process.This second release conditions is inquired after first release conditions usually.Predetermined value on application purpose and protection is decided, and second release conditions is inquired side by side with first release conditions at least in part sometimes.
At this moment not only can eliminate the cut-off signals 7a of the first evaluation component 4a, and can then reclose semiconductor switch 6.Can keep the continuous firing of the high-effect or power supply of circuit thus.Even when checking had surpassed duration of turn off process and power supply the duration and disconnected, this for example can also realize by reclosing of semiconductor switch 6.
Cut-off current i need set up a reverse voltage with the effect of network operation voltage reversal in semiconductor switch 6 in principle.Especially for the Z of distance protection mechanism＜＜by the I of overcurrent protection mechanism＞＞first switch transition 21a situation about triggering, produce switching signal S with the form of cut-off signals 7a.Because to semiconductor switch 6 parallel connections change of current branch road 8 that wherein is provided with piezo-resistance 9 or the so-called clamp by an equivalent element semiconductor switch 6 can also partly be connected, constitute reverse voltage thus.
To descend linearly at the reverse voltage after-current i that works.Reverse voltage is higher, and the process that electric current descends is just shorter.After current i reaches value 0, the switching voltage U of semiconductor switch 6
sTo follow line voltage U
NetzTherefore current i also will flow through a few μ s a period of time to maximum 1ms after the turn off process of semiconductor switch 6.It will be simple especially using above-mentioned algorithm in during this period of time.
This algorithm provides the finding the solution an of equation, and its objective is first and second load unit L and the R of definite load of supposing.In the case will be right by the numerical value of processing parameter voltage u and current i or di/dt.More accurate electrical network simulation can be used the electric network model of higher-order.
That protection equipment 1, protective device 2 and guard method 19 also can be used for is heterogeneous, 3 phase electrical networks especially.
Claims (12)
1. protection equipment (1) that is used for electric line (5), its have first and second evaluation component (4a, 4b),
-wherein, described first evaluation component (4a) forms function with semiconductor switch (6) in being located at electric line (5) and is connected, and when satisfied first release conditions, exports a cut-off signals (7a) to semiconductor switch (6), in semiconductor switch (6), produce a turn off process thus, and
-wherein, described second evaluation component (4b) is interrupted this turn off process when not satisfying second release conditions.
2. protective device (2) that is used for electric line (5); it has first and second evaluation component (4a; 4b) with a semiconductor switch (6); this semiconductor switch (6) is located in the electric line (5) and forms function with first evaluation component (4a) and is connected; and when satisfying first release conditions; to semiconductor switch (a 6) output cut-off signals (7a), in semiconductor switch (6), produce a turn off process thus, and
-wherein, described second evaluation component (4b) is interrupted this turn off process when not satisfying second release conditions.
3. protective device according to claim 2 (2), wherein, described two evaluation component (4a, 4b) and semiconductor switch (6) be designed to the power supply grid of low pressure, middle pressure and high pressure range.
4. according to claim 2 or 3 described protective devices (2); wherein; described second evaluation component (4b) comprises the sampling and holding member (10,12), a computing unit (14), a comparing unit (15) and the time flow control unit (17) that are used for voltage (u) and electric current (i) respectively.
5. according to each described protective device (2) in the claim 2,3 or 4, wherein, described semiconductor switch (6) has a piezo-resistance that is connected in parallel (Varistor) (9).
6. according to each described protective device (2) in the claim 2 to 5, wherein, the described first evaluation device (4a) is designed to overcurrent protection mechanism (I＞＞).
7. according to each described protective device (2) in the claim 2 to 6, wherein, described second evaluation component (4b) is designed to distance protection mechanism (Z＜＜).
8. according to each described protective device (2) in the claim 2 to 7, wherein, described turn off process takes place during the commutation course of semiconductor switch (6) at the latest.
9. guard method (19) that is used for electric line (5),
-wherein, one first evaluation component (4a) acts on the semiconductor switch (6) that is located in the electric line (5), and when satisfying first release conditions, to semiconductor switch (a 6) output cut-off signals (7a), in semiconductor switch (6), produce a turn off process thus, and
-wherein, one second evaluation component (4b) is interrupted this turn off process when not satisfying second release conditions.
10. guard method according to claim 9 (19), wherein, described second release conditions is inquired after first release conditions.
11. guard method according to claim 9 (19), wherein, described second release conditions is inquired concurrently with first release conditions at least in part.
12. guard method according to claim 9 (19) wherein, will be eliminated described cut-off signals (7a) and/or described semiconductor switch (6) will be imported a connection signal (7b) in order to interrupt described turn off process.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10117372.5 | 2001-04-06 | ||
| DE2001117372 DE10117372B4 (en) | 2001-04-06 | 2001-04-06 | Protective device, protective device and protection method for an electric cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1395346A true CN1395346A (en) | 2003-02-05 |
Family
ID=7680752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02127253 Pending CN1395346A (en) | 2001-04-06 | 2002-04-06 | Protecting equipment, protecting device and protecting method for circuit |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN1395346A (en) |
| DE (1) | DE10117372B4 (en) |
| FR (1) | FR2823380B1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102684140A (en) * | 2011-03-15 | 2012-09-19 | 英飞凌科技股份有限公司 | Controlling a current between a source and a load |
| CN103354345A (en) * | 2013-06-18 | 2013-10-16 | 国家电网公司 | Method used for acquiring initial breakpoint set of parallel line |
| CN111971865A (en) * | 2018-06-11 | 2020-11-20 | 西门子股份公司 | Solid-state circuit breaker and breaking method for solid-state circuit breaker |
| CN114365255A (en) * | 2019-09-06 | 2022-04-15 | 西门子股份公司 | Protection switch device, protection switch system and method |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004012215B4 (en) * | 2004-03-12 | 2020-03-26 | Tridonic Gmbh & Co Kg | Control of illuminant control gear with a central cascaded AC / DC converter |
| DE102004012216B4 (en) * | 2004-03-12 | 2020-04-16 | Tridonic Gmbh & Co Kg | Control of illuminant control gear via a switchable DC bus |
| CN105449648B (en) * | 2015-11-19 | 2019-02-12 | 南方电网科学研究院有限责任公司 | A kind of optimization method of UHVDC Transmission Lines traveling-wave protection characteristic quantity floating threshold |
| DE202017100974U1 (en) * | 2017-02-22 | 2018-05-24 | Tridonic Gmbh & Co Kg | Power supply with extra-low voltages at different potentials |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1511108A (en) * | 1966-12-15 | 1968-01-26 | Mechanical Products Inc | Electronic circuit protection device |
| FR2550024B1 (en) * | 1983-07-25 | 1986-03-14 | Electricite De France | CURRENT OVERCURRENT PROTECTION DEVICE |
| JPH04112619A (en) * | 1990-09-03 | 1992-04-14 | Hitachi Ltd | Distribution line interrupting method, interrupter and using method thereof |
| US5216352A (en) * | 1990-11-29 | 1993-06-01 | Square D Company | Solid state current controlled interruption system |
| DE19800049A1 (en) * | 1998-01-02 | 1999-07-08 | Philips Patentverwaltung | Arrangement for transmitting data and / or energy with a separation unit |
-
2001
- 2001-04-06 DE DE2001117372 patent/DE10117372B4/en not_active Expired - Fee Related
-
2002
- 2002-03-29 FR FR0204004A patent/FR2823380B1/en not_active Expired - Fee Related
- 2002-04-06 CN CN 02127253 patent/CN1395346A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102684140A (en) * | 2011-03-15 | 2012-09-19 | 英飞凌科技股份有限公司 | Controlling a current between a source and a load |
| CN102684140B (en) * | 2011-03-15 | 2014-11-26 | 英飞凌科技股份有限公司 | Controlling a current between a source and a load |
| CN103354345A (en) * | 2013-06-18 | 2013-10-16 | 国家电网公司 | Method used for acquiring initial breakpoint set of parallel line |
| CN111971865A (en) * | 2018-06-11 | 2020-11-20 | 西门子股份公司 | Solid-state circuit breaker and breaking method for solid-state circuit breaker |
| CN111971865B (en) * | 2018-06-11 | 2022-12-06 | 西门子股份公司 | Solid-state circuit breaker and breaking method for solid-state circuit breaker |
| CN114365255A (en) * | 2019-09-06 | 2022-04-15 | 西门子股份公司 | Protection switch device, protection switch system and method |
| US11979015B2 (en) | 2019-09-06 | 2024-05-07 | Siemens Aktiengesellschaft | Circuit breaker device, circuit breaker system and method |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2823380A1 (en) | 2002-10-11 |
| FR2823380B1 (en) | 2007-04-13 |
| DE10117372A1 (en) | 2002-11-07 |
| DE10117372B4 (en) | 2006-11-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102280869B (en) | Switching device | |
| CN101043138A (en) | Protection circuit for semiconductor element | |
| CN1127213C (en) | Method and circuit device for controlling several semiconductor switch unit in series circuit | |
| JP6683510B2 (en) | Semiconductor device, maintenance device, and maintenance method | |
| US20080048806A1 (en) | Electronic Switching Device, In Particular Circuit-Breaker And Associated Operating Method | |
| CN102611077B (en) | Car door window motor lock-rotor protection method and system | |
| DE102010064253B4 (en) | Semiconductor component with detection of thermally induced defects | |
| US7633022B2 (en) | Circuit breaker system | |
| CN101603999B (en) | Measurement control device for controllable thyristor switch of metal oxide arrester | |
| CN1395346A (en) | Protecting equipment, protecting device and protecting method for circuit | |
| CN103795381A (en) | Protection circuit and gate driving circuit for semiconductor switching device | |
| CN1645702A (en) | Differential protection device with simplified protection parameter adjustment means | |
| Xu et al. | Integrated high-speed over-current protection circuit for GaN power transistors | |
| CN110611298A (en) | IPM protection system for flywheel energy storage device | |
| JP6048164B2 (en) | Overcurrent protection circuit | |
| CN102082418A (en) | Method for setting overcurrent protection point for insulated gate bipolar transistor | |
| CA2614427C (en) | Method and apparatus for recognizing a change-of-state in communication signals of electronic circuits | |
| CN1639819A (en) | Control system for electrical switchgear | |
| CN101345405A (en) | Protection circuit of power switch device | |
| CN102640419A (en) | Semiconductor device | |
| CN106370922B (en) | solid-state power controller and fault current recording method thereof | |
| CN1941534A (en) | Circuit-breaker operation interface module of relay protector for power system | |
| CN103259254B (en) | A kind of series IGBT valve unit protection system and guard method | |
| CN201044436Y (en) | Over-current self-locking bridge drive circuit | |
| CA3101845C (en) | Method and arrangement for actuating a metal-oxide-semiconductor field-effect transistor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |