CN104237780A - Characteristic detecting method and device - Google Patents
Characteristic detecting method and device Download PDFInfo
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- CN104237780A CN104237780A CN201410465289.4A CN201410465289A CN104237780A CN 104237780 A CN104237780 A CN 104237780A CN 201410465289 A CN201410465289 A CN 201410465289A CN 104237780 A CN104237780 A CN 104237780A
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Abstract
The invention discloses a characteristic detecting method and device. A high-voltage circuit breaker comprises an electromagnet, an operation mechanism, a transmission mechanism and a contact. A loop where an electromagnet coil is located is provided with a pair of auxiliary contact points which enables the loop to be opened. The high-voltage circuit breaker triggers the operation mechanism and the transmission mechanism to move in the mode that the electromagnet coil is powered on, so that the contact is driven by the transmission mechanism to complete opening operation or closing operation. The characteristic detecting method comprises the steps that when the high-voltage circuit breaker is in the online or offline operation state, the current change in the electromagnet coil in the closing operation process or the opening operation process is measured, and then the characteristic parameter is determined from the current change.
Description
Technical field
The present invention relates to high-tension switch gear field, particularly relate to a kind of characteristic detecting method and characteristic detection device.
Background technology
Primary cut-out is control and protection equipment important in electric system, by primary cut-out, can need a part of power equipment or circuit input or out of service according to the operation of electrical network; When power circuit or device fails, faulty component is excised fast from electrical network, ensure power grid security reliable power supply.In a word, primary cut-out can cut-off, close and the normal current of Inhaul operation circuit, also can carry at the appointed time, closes and cut-off abnormal current.It is very important for ensureing that primary cut-out can normally, reliably work.
Statistics for primary cut-out fault shows, the primary cut-out fault proportion that mechanical reason causes is comparatively large, and the detection of machine performance is conducive to reducing its failure rate.It is wherein, most important that what must measure when being also site examining and repairing is opening time and the closing time of primary cut-out.
The existing detection technique method of primary cut-out separating brake time and closing time is out of service at primary cut-out, complete under off-line state, on the upper lower connecting terminal of primary cut-out fracture, measurement signal line will be connected respectively, measure operation electriomagnet coil current simultaneously.When primary cut-out carries out closing operation, this signal wire has electric current to flow through, and electric current exports high level or low level signal after photoisolator and voltage comparator.When primary cut-out carries out sub-switching operation, on this signal wire, no current passes through, output low level or high level signal.And measuring system reads all fracture signals with the certain hour cycle simultaneously.With operating coil current signal starting point for reference instant, calculate opening time and the closing time of each fracture of each phase.
This shows, prior art be measure operation electriomagnet coil current and breaker fracture signal at the same time basis on realize.Therefore need to measure two kinds of signals, wiring is more loaded down with trivial details simultaneously.And for the primary cut-out of on-line operation, fracture signal can not be measured when major loop has load.Therefore prior art is only suitable for adopting when primary cut-out manufacturing firm or interruption maintenance, cannot be used for on-line monitoring occasion, and causing can not the mechanical property fault of primary cut-out of Timeliness coverage on-line operation.
Summary of the invention
The embodiment of the present invention is by providing a kind of characteristic detecting method and characteristic detection device, and solving in prior art can not the technical matters of mechanical property fault of primary cut-out of Timeliness coverage on-line operation.
First aspect, embodiments provides characteristic detecting method, is applied to primary cut-out, described primary cut-out comprises electromagnet, operating mechanism, gear train and contact, there is the auxiliary contact that can cut off this loop for a pair in loop, described magnet coil place; Described primary cut-out triggers described operating mechanism and gear train motion by described electromagnet coil power, and make described gear train band moving contact complete sub-switching operation or closing operation, described method comprises:
Under described primary cut-out is in online or off-line operation state, measure the curent change in the described magnet coil in described sub-switching operation or described closing operation process;
Current characteristic number is determined from described curent change;
The performance parameter value corresponding with described current characteristic number is determined according to described current characteristic number.
Preferably, described current characteristic number comprises electromagnet coil current instantaneous value when described auxiliary contact disconnects, and describedly determines the performance parameter value corresponding with described current characteristic number according to described current characteristic number, is specially:
The auxiliary contact that when disconnecting based on the described auxiliary contact of generation, electromagnet coil current instantaneous value is corresponding disconnects moment value and standard deviation obtains described performance parameter value.
Preferably, when described auxiliary contact disconnects, electromagnet coil current instantaneous value is for when auxiliary contact described in described sub-switching operation process disconnects, and described magnet coil is by the instantaneous value of electric current; The described auxiliary contact corresponding based on electromagnet coil current instantaneous value during the disconnection of generation described auxiliary contact disconnects moment value and standard deviation obtains described performance parameter value, comprising:
Record produces the first disconnection moment corresponding to electromagnet coil current instantaneous value when described auxiliary contact disconnects, wherein, and the moment that the described first disconnection moment disconnects for auxiliary contact described in described sub-switching operation process;
The performance parameter value obtaining described primary cut-out according to described first disconnection moment and the first standard deviation is carry out the opening time when time sub-switching operation, wherein, described first standard deviation is the difference that the standard opening time of described primary cut-out and the first standard of described auxiliary contact disconnect between the moment.
Preferably, when described auxiliary contact disconnects, electromagnet coil current instantaneous value is for when auxiliary contact described in described closing operation process disconnects, and described magnet coil is by the instantaneous value of electric current; The described auxiliary contact corresponding based on electromagnet coil current instantaneous value during the disconnection of generation described auxiliary contact disconnects moment value and standard deviation obtains described performance parameter value, comprising:
Record produces the second disconnection moment corresponding to electromagnet coil current instantaneous value when described auxiliary contact disconnects, wherein, and the moment that the described second disconnection moment disconnects for auxiliary contact described in described closing operation process;
The performance parameter value obtaining described primary cut-out according to described second disconnection moment and the second standard deviation is carry out the closing time when time closing operation, wherein, described second standard deviation is the difference that the standard closing time of described primary cut-out and the second standard of described auxiliary contact disconnect between the moment.
Second aspect, embodiments provides a kind of characteristic detection device, for detecting the characteristic of primary cut-out, described primary cut-out comprises electromagnet, operating mechanism, gear train and contact, there is the auxiliary contact that can cut off this loop for a pair in loop, described magnet coil place; Described primary cut-out triggers described operating mechanism and gear train motion by described electromagnet coil power, and make described gear train band moving contact complete sub-switching operation or closing operation, described device comprises:
Measuring unit, for be in online or off-line operation state at described primary cut-out under, measures the curent change in the described magnet coil in described sub-switching operation or described closing operation process;
First determining unit, for determining current characteristic number from described curent change;
Second determining unit, for determining the performance parameter value corresponding with described current characteristic number according to described current characteristic number.
Preferably, described current characteristic number comprises electromagnet coil current instantaneous value when described auxiliary contact disconnects, described second determining unit, the auxiliary contact that during specifically for disconnecting based on the described auxiliary contact of generation, electromagnet coil current instantaneous value is corresponding disconnects moment value and standard deviation obtains described performance parameter value.
Preferably, when described auxiliary contact disconnects, electromagnet coil current instantaneous value is for when auxiliary contact described in described sub-switching operation process disconnects, and described magnet coil is by the instantaneous value of electric current; Described second determining unit, specifically for:
Record produces the first disconnection moment corresponding to electromagnet coil current instantaneous value when described auxiliary contact disconnects, wherein, and the moment that the described first disconnection moment disconnects for auxiliary contact described in described sub-switching operation process;
The performance parameter value obtaining described primary cut-out according to described first disconnection moment and the first standard deviation is carry out the opening time when time sub-switching operation, wherein, described first standard deviation is the difference that the standard opening time of described primary cut-out and the first standard of described auxiliary contact disconnect between the moment.
Preferably, when described auxiliary contact disconnects, electromagnet coil current instantaneous value is for when auxiliary contact described in described closing operation process disconnects, and described magnet coil is by the instantaneous value of electric current; Described second determining unit, specifically for:
Record produces the second disconnection moment corresponding to electromagnet coil current instantaneous value when described auxiliary contact disconnects, wherein, and the moment that the described second disconnection moment disconnects for auxiliary contact described in described closing operation process;
The performance parameter value obtaining described primary cut-out according to described second disconnection moment and the second standard deviation is carry out the closing time when time closing operation, wherein, described second standard deviation is the difference that the standard closing time of described primary cut-out and the second standard of described auxiliary contact disconnect between the moment.
One or more technical schemes in the embodiment of the present invention, at least have following technique effect or advantage:
Owing to have employed under primary cut-out is in online or off-line operation state, measure the curent change of magnet coil in the operation of primary cut-out separating brake or closing operation process; Current characteristic number is determined from curent change; The performance parameter value corresponding with current characteristic number is determined according to current characteristic number.Therefore do not need to measure fracture signal, but according to the stable relation between current characteristic number and performance parameter, directly obtained being in the performance parameter value under online running status by current characteristic number, such as opening time, closing time, avoiding can not the technical matters of mechanical property fault of Timeliness coverage primary cut-out, the on-line monitoring of the performance parameter of primary cut-out can be realized, and can according to the mechanical property fault of the performance parameter Timeliness coverage primary cut-out obtained.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments of the invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the accompanying drawing provided.
Fig. 1 is the structural representation of embodiment of the present invention mesohigh isolating switch;
Fig. 2 is the process flow diagram of characteristic detecting method in the embodiment of the present invention;
Fig. 3 is the typical waveform figure of electromagnet coil current in the embodiment of the present invention;
Fig. 4 is the module map of device in the embodiment of the present invention.
Embodiment
Can not the problem of mechanical property fault of Timeliness coverage primary cut-out in order to solve in prior art, embodiments provide a kind of characteristic detecting method and characteristic detection device.
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Shown in figure 1, the characteristic detecting method in the embodiment of the present invention is applied in primary cut-out as shown in Figure 1.This primary cut-out includes the energy 10, operating mechanism 20, (operating mechanism 20 comprises an electromagnet (not shown), wherein, electromagnet specifically comprises operating coil and iron core), gear train 30, hoisting gear 40, and contact 50, contact 50 specifically comprises dynamic/static contact (not shown), the primary cut-out that characteristic detecting method is applied is energized by operating coil, then the associated components of electrical apparatus release (not shown) in operating mechanism 20 is clashed in the iron core motion of operating coil, triggering operating mechanism 20 and gear train 30 move, final drive gear 30 drives hoisting gear 40 to move, the moving contact of contact 50 (not shown) is then made to move, make the dynamic of contact 50, static contact has disconnected sub-switching operation mutually, or it is dynamic, static contact has contacted with each other closing operation.Wherein, so-called sub-switching operation indication is that primary cut-out is called sub-switching operation when being in off-line or no-load running, and is called when primary cut-out is in on-line operation and cut-offs operation; So-called closing operation indication is that primary cut-out is called sub-switching operation when being in off-line or no-load running, and pass closing operation is called when primary cut-out is in online, therefore in specific implementation process, in technical solution of the present invention said sub-switching operation and closing operation be not defined as just off-line unloaded or just to have online year time operation.
Continue with reference to shown in figure 2, Fig. 2 is the characteristic detecting method in the embodiment of the present invention, and this characteristic detecting method comprises:
S101, under primary cut-out is in online or off-line operation state, measure the curent change of magnet coil in sub-switching operation or closing operation process in magnet coil;
Concrete, for sub-switching operation, the typical waveform figure of the curent change measured can shown in reference diagram 3, as can be seen from Figure 3, and T
0moment is the initial time of wave recording figure, and the curent change of magnet coil is divided into four-stage:
In the stage one: be T0 ~ T1 time period, magnet coil starts energising in the T0 moment, and electromagnet coil current constantly rises.Because iron core is by the drag effect such as gravity, friction force, the electromagnetic force that electromagnet coil current produces is less than drag effect, and iron core remains static.The electromagnet coil current waveform exponentially rule increase of this one-phase.
Stage two: be T1 ~ T2 time period, this one-phase is motion stage unshakable in one's determination.The electromagnetic force that electromagnet coil current produces is more than or equal to drag effect unshakable in one's determination in the T1 moment, and iron core overcomes drag effect setting in motion, and cause electromagnet coil current to start to decline, therefore in the T1 moment, electromagnet coil current occurs that current peak is I
1.
Stage three: be T2 ~ T3 time period, this one-phase is gear train action phase, iron core moves to maximum position in the T2 moment, collide with the associated components of electrical apparatus release in operating mechanism, then drive operating mechanism and gear train motion, concrete, gear train is connecting rod, cam etc., the electromagnet coil current in stage three from the T2 moment again rise, therefore, in the T2 moment, electromagnet coil current occurs that electric current valley is I
2.
In the stage four: be T3 ~ T4 time period, gear train drives the dynamic/static contact of auxiliary contact to disconnect in the T3 moment, and electromagnet coil current declines after the T3 moment, and current value corresponding to T3 moment is I
3.Then, electromagnet coil current disconnected in the T4 moment.
Concrete, according to aforementioned be the typical waveform figure of the curent change that example describes to sub-switching operation, those skilled in the art can know to measure which curent change of magnet coil when closing operation.
S102, from curent change, determine current characteristic number.
Concrete, the typical waveform figure continued with reference to the curent change shown in figure 3 can find out, the current characteristic number determined can refer to the I in TI moment
1, the I in T2 moment
2, the I in T3 moment
3.In like manner, it is that those skilled in the art can know the current characteristic number of magnet coil when closing operation for which current characteristic number, succinct in order to instructions, does not repeat them here.
S103, determine the performance parameter value corresponding with current characteristic number according to current characteristic number.
Concrete, current characteristic number indication is different, then the type of the performance parameter value determined is also different, different with regard to current characteristic number indication respectively below, describes respectively the embodiment of S103.
Situation one, electromagnet coil current instantaneous value when current characteristic number is auxiliary contact disconnection.Such as, concrete indication is the I in Fig. 3
3.
Then S103 is specially: disconnect moment value and standard deviation acquisition performance parameter value based on producing the auxiliary contact that when auxiliary contact disconnects, electromagnet coil current instantaneous value is corresponding.
On the one hand, when when auxiliary contact disconnects, electromagnet coil current instantaneous value is auxiliary contact disconnection in sub-switching operation process, magnet coil is by the instantaneous value of electric current, the performance parameter value obtained is opening time, specifically, when auxiliary contact now disconnects, electromagnet coil current instantaneous value is auxiliary contact that magnet coil produces in contact detachment process electromagnet coil current instantaneous value when disconnecting.The flow process that the auxiliary contact that when disconnecting based on auxiliary contact, electromagnet coil current instantaneous value is corresponding disconnects moment value and standard deviation acquisition performance parameter value comprises: the first disconnection moment that when record auxiliary contact disconnects, electromagnet coil current instantaneous value is corresponding; The performance parameter value obtaining primary cut-out according to the first disconnection moment and the first standard deviation is carry out the opening time when time sub-switching operation, wherein, first disconnects the moment that the moment is auxiliary contact disconnection in sub-switching operation process, and the first standard deviation is the difference between the standard opening time of primary cut-out and the first standard disconnection moment.
Further, in specific implementation process, the acquisition of the first standard deviation is before this primary cut-out drops into on-line operation.Preferably, first standard deviation can disconnect the moment for the many groups standard opening time obtained by repeated detection with corresponding many groups first, and many groups standard opening time and the first difference disconnected between the moment are averaged calculate the first standard deviation, to improve the accuracy of the first standard deviation.Specifically, calculate standard opening time required for the first standard deviation and first and disconnect the moment and obtain with reference to prior art measurement, succinct in order to instructions, be not described at this.
Be illustrated below, such as, before on-line operation, measure and obtain standard opening time T
tricp1=m
1, first disconnects moment T3=n
1, calculate the first standard deviation x
1=m
1-n
1, be recorded in primary cut-out by the first standard deviation, when performing a sub-switching operation when primary cut-out is in online or off-line operation state, measuring and obtaining the moment T3 that when auxiliary contact disconnects, electromagnet coil current instantaneous value is corresponding is the first disconnection moment t
1, then the opening time T of this sub-switching operation
tricp2=x
1+ t
1.
On the other hand, when when auxiliary contact disconnects, electromagnet coil current instantaneous value is auxiliary contact disconnection in closing operation process, magnet coil is by the instantaneous value of electric current, the performance parameter value obtained is closing time, specifically, when auxiliary contact now disconnects, electromagnet coil current instantaneous value is auxiliary contact that magnet coil produces in contact engaging process electromagnet coil current instantaneous value when disconnecting.The flow process that the auxiliary contact that when disconnecting based on auxiliary contact, electromagnet coil current instantaneous value is corresponding disconnects moment value and standard deviation acquisition performance parameter value comprises: the second disconnection moment that when record auxiliary contact disconnects, electromagnet coil current instantaneous value is corresponding, the performance parameter value obtaining primary cut-out according to the second disconnection moment and the second standard deviation is carry out the closing time when time closing operation, wherein, second disconnects the moment that the moment is auxiliary contact disconnection in closing operation process; Second standard deviation is the difference between the standard closing time of primary cut-out and the second standard disconnection moment.
Further, in specific implementation process, the acquisition of the second standard deviation is before this primary cut-out drops into on-line operation.Preferably, second standard deviation can disconnect the moment for the many groups standard closing time obtained by repeated detection with corresponding many groups second, and many groups standard closing time and the second difference disconnected between the moment are averaged calculate the second standard deviation, to improve the accuracy of the second standard deviation.Specifically, calculate standard closing time required for the second standard deviation and second and disconnect the moment and obtain with reference to prior art measurement, succinct in order to instructions, be not described at this.
Be illustrated below, such as, before on-line operation, measure and obtain standard closing time T
close1=m
2, second disconnects moment T3=n
2, calculate the second standard deviation x
2=m
2-n
2, be recorded in primary cut-out by the second standard deviation, when performing a closing operation when primary cut-out is in online or off-line operation state, measuring and obtaining the moment T3 that when auxiliary contact disconnects, electromagnet coil current instantaneous value is corresponding is the second disconnection moment t
2, then the closing time T of this closing operation
close2=x
2+ t
2.
By the embodiment of situation one, opening time and closing time can be obtained online.Because opening time be from primary cut-out receive separating brake instruction play contact gear train drives the time of releasing only, closing time receives reclosing command from primary cut-out and plays contact gear train drives Contact is only.And find through lot of experiments, the T3 moment in sub-switching operation and opening time T
tricpbetween difference stability better, and the dispersiveness of this difference is less than the dispersiveness of the opening time of primary cut-out.Same, the T3 moment in closing operation and closing time T
closebetween difference stability better, and the dispersiveness of this difference is less than the dispersiveness of the closing time of primary cut-out, therefore, the auxiliary contact utilizing electromagnet coil current to produce under the online or off-line operation state of primary cut-out disconnects moment value (T3 with reference in figure 3) and the first standard deviation sum to estimate that the secondary opening time T operated worked as by primary cut-out
tricpfeasible, in like manner, utilize electromagnet coil current to produce auxiliary contact under the online or off-line operation state of primary cut-out and disconnect moment value (T3 with reference in figure 3) with the second standard deviation sum to estimate that primary cut-out is as the secondary closing time T operated
closefeasible.Prove by experiment, the technical scheme in the embodiment of the present invention estimates that the opening time obtained closes or opening time precision all can reach ± 0.8ms.
Based on same inventive concept, embodiments provide a kind of characteristic detection device, for detecting the characteristic of primary cut-out, primary cut-out comprises electromagnet, operating mechanism, gear train and contact, there is the auxiliary contact that can cut off this loop for a pair in loop, described magnet coil place; Described primary cut-out triggers operating mechanism and gear train motion by electromagnet coil power, and make gear train band moving contact complete sub-switching operation or closing operation, shown in figure 4, device comprises:
Measuring unit 201, for be in online or off-line operation state at primary cut-out under, measures the curent change in the magnet coil in sub-switching operation or closing operation process;
First determining unit 202, for determining current characteristic number from curent change;
Second determining unit 203, for determining the performance parameter value corresponding with current characteristic number according to current characteristic number.
Preferably, current characteristic number comprises electromagnet coil current instantaneous value when auxiliary contact disconnects, second determining unit, specifically for disconnecting moment value and standard deviation acquisition performance parameter value based on producing the auxiliary contact that when auxiliary contact disconnects, electromagnet coil current instantaneous value is corresponding.
Preferably, when auxiliary contact disconnects, electromagnet coil current instantaneous value is that when in sub-switching operation process, auxiliary contact disconnects, magnet coil is by the instantaneous value of electric current; Second determining unit 203, specifically for:
Record produces the first disconnection moment corresponding to electromagnet coil current instantaneous value when auxiliary contact disconnects, and wherein, the first disconnection moment was the moment that in sub-switching operation process, auxiliary contact disconnects;
The performance parameter value obtaining primary cut-out according to the first disconnection moment and the first standard deviation is carry out the opening time when time sub-switching operation, wherein, the first standard deviation is the difference that the standard opening time of primary cut-out and the first standard of auxiliary contact disconnect between the moment.
Preferably, when auxiliary contact disconnects, electromagnet coil current instantaneous value is that when in closing operation process, auxiliary contact disconnects, magnet coil is by the instantaneous value of electric current; Second determining unit 203, specifically for:
Record produces the second disconnection moment corresponding to electromagnet coil current instantaneous value when auxiliary contact disconnects, and wherein, the second disconnection moment was the moment value that the auxiliary contact in closing operation process disconnects;
The performance parameter value obtaining primary cut-out according to the second disconnection moment and the second standard deviation is carry out the closing time when time closing operation, wherein, the second standard deviation is the difference that the standard closing time of primary cut-out and the second standard of auxiliary contact disconnect between the moment.
The characteristic detection device introduced due to the present embodiment is for implementing the characteristic detection device that in the embodiment of the present application, characteristic detecting method adopts, so based on the characteristic detecting method introduced in the embodiment of the present invention, those skilled in the art can understand embodiment and its various version of the characteristic detection device of the present embodiment, so introduce no longer in detail for this characteristic detection device at this.As long as those skilled in the art implement the characteristic detection device that characteristic detecting method in the embodiment of the present invention adopts, all belong to the present invention for protection scope.
Technical scheme in above-mentioned the embodiment of the present application, at least has following technique effect or advantage:
Owing to have employed under primary cut-out is in online or off-line operation state, measure the curent change of magnet coil in sub-switching operation or closing operation process; Current characteristic number is determined from curent change; The performance parameter value corresponding with current characteristic number is determined according to current characteristic number.Therefore do not need to measure fracture signal, according to the stable relation between current characteristic number and performance parameter, directly obtained being in the performance parameter under online or off-line operation state by current characteristic number, the such as performance parameter such as opening time, closing time, avoiding can not the technical matters of mechanical property fault of Timeliness coverage primary cut-out, can realize the performance parameter of primary cut-out on-line measurement and can according to the mechanical property fault of performance parameter Timeliness coverage primary cut-out.
Although describe the preferred embodiments of the present invention, those skilled in the art once obtain the basic creative concept of cicada, then can make other change and amendment to these embodiments.So claims are intended to be interpreted as comprising preferred embodiment and falling into all changes and the amendment of the scope of the invention.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (8)
1. a characteristic detecting method, is applied to primary cut-out, and described primary cut-out comprises electromagnet, operating mechanism, gear train and contact, and there is the auxiliary contact that can cut off this loop for a pair in loop, described magnet coil place; Described primary cut-out triggers described operating mechanism and gear train motion by described electromagnet coil power, and make described gear train band moving contact complete sub-switching operation or closing operation, it is characterized in that, described method comprises:
Under described primary cut-out is in online or off-line operation state, measure the curent change in magnet coil described in described sub-switching operation or described closing operation process;
Current characteristic number is determined from described curent change;
The performance parameter value corresponding with described current characteristic number is determined according to described current characteristic number.
2. the method for claim 1, it is characterized in that, described current characteristic number comprises electromagnet coil current instantaneous value when described auxiliary contact disconnects, and describedly determines the performance parameter value corresponding with described current characteristic number according to described current characteristic number, is specially:
The auxiliary contact that when disconnecting based on the described auxiliary contact of generation, electromagnet coil current instantaneous value is corresponding disconnects moment value and standard deviation obtains described performance parameter value.
3. method as claimed in claim 2, is characterized in that, when described auxiliary contact disconnects, electromagnet coil current instantaneous value is for when auxiliary contact described in described sub-switching operation process disconnects, and described magnet coil is by the instantaneous value of electric current; The described auxiliary contact corresponding based on electromagnet coil current instantaneous value during the disconnection of generation described auxiliary contact disconnects moment value and standard deviation obtains described performance parameter value, comprising:
Record produces the first disconnection moment corresponding to electromagnet coil current instantaneous value when described auxiliary contact disconnects, wherein, and the moment that the described first disconnection moment disconnects for auxiliary contact described in described sub-switching operation process;
The performance parameter value obtaining described primary cut-out according to described first disconnection moment and the first standard deviation is carry out the opening time when time sub-switching operation, wherein, described first standard deviation is the difference that the standard opening time of described primary cut-out and the first standard of described auxiliary contact disconnect between the moment.
4. method as claimed in claim 2, is characterized in that, when described auxiliary contact disconnects, electromagnet coil current instantaneous value is for when auxiliary contact described in described closing operation process disconnects, and described magnet coil is by the instantaneous value of electric current; The described auxiliary contact corresponding based on electromagnet coil current instantaneous value during the disconnection of generation described auxiliary contact disconnects moment value and standard deviation obtains described performance parameter value, comprising:
Record produces the second disconnection moment corresponding to electromagnet coil current instantaneous value when described auxiliary contact disconnects, and wherein, the described second disconnection moment is the moment value that the described auxiliary contact in described closing operation process disconnects;
The performance parameter value obtaining described primary cut-out according to described second disconnection moment and the second standard deviation is carry out the closing time when time closing operation, wherein, described second standard deviation is the difference that the standard closing time of described primary cut-out and the second standard of described auxiliary contact disconnect between the moment.
5. a characteristic detection device, for detecting the characteristic of primary cut-out, described primary cut-out comprises electromagnet, operating mechanism, gear train and contact, and there is the auxiliary contact that can cut off this loop for a pair in loop, described magnet coil place; Described primary cut-out triggers described operating mechanism and gear train motion by described electromagnet coil power, and make described gear train band moving contact complete sub-switching operation or closing operation, it is characterized in that, described device comprises:
Measuring unit, for be in online or off-line operation state at described primary cut-out under, measures the curent change in the described magnet coil in described sub-switching operation or described closing operation process;
First determining unit, for determining current characteristic number from described curent change;
Second determining unit, for determining the performance parameter value corresponding with described current characteristic number according to described current characteristic number.
6. device as claimed in claim 5, it is characterized in that, described current characteristic number comprises electromagnet coil current instantaneous value when described auxiliary contact disconnects, described second determining unit, the auxiliary contact that during specifically for disconnecting based on the described auxiliary contact of generation, electromagnet coil current instantaneous value is corresponding disconnects moment value and standard deviation obtains described performance parameter value.
7. device as claimed in claim 6, is characterized in that, when described auxiliary contact disconnects, electromagnet coil current instantaneous value is for when auxiliary contact described in described sub-switching operation process disconnects, and described magnet coil is by the instantaneous value of electric current; Described second determining unit, specifically for:
Record produces the first disconnection moment corresponding to electromagnet coil current instantaneous value when described auxiliary contact disconnects, wherein, and the moment that the described first disconnection moment disconnects for auxiliary contact described in described sub-switching operation process;
The performance parameter value obtaining described primary cut-out according to described first disconnection moment and the first standard deviation is carry out the opening time when time sub-switching operation, wherein, described first standard deviation is the difference that the standard opening time of described primary cut-out and the first standard of described auxiliary contact disconnect between the moment.
8. device as claimed in claim 6, is characterized in that, when described auxiliary contact disconnects, electromagnet coil current instantaneous value is for when auxiliary contact described in described closing operation process disconnects, and described magnet coil is by the instantaneous value of electric current; Described second determining unit, specifically for:
Record produces the second disconnection moment corresponding to electromagnet coil current instantaneous value when described auxiliary contact disconnects, and wherein, the described second disconnection moment is the moment value that the described auxiliary contact in described closing operation process disconnects;
The performance parameter value obtaining described primary cut-out according to described second disconnection moment and the second standard deviation is carry out the closing time when time closing operation, wherein, described second standard deviation is the difference that the standard closing time of described primary cut-out and the second standard of described auxiliary contact disconnect between the moment.
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| CN201410465289.4A CN104237780B (en) | 2014-09-12 | 2014-09-12 | A kind of characteristic detecting method and characteristic detection device |
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| CN201410465289.4A CN104237780B (en) | 2014-09-12 | 2014-09-12 | A kind of characteristic detecting method and characteristic detection device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104502837A (en) * | 2014-12-15 | 2015-04-08 | 清华大学 | Diagnostic method and device for mechanical fault of circuit breaker |
| CN105548876A (en) * | 2016-01-28 | 2016-05-04 | 国网北京市电力公司 | Method and device for detection of mechanical features of disconnection switch |
| CN105866669A (en) * | 2016-05-19 | 2016-08-17 | 华南理工大学 | Circuit breaker breaking-closing control loop fault diagnosis method |
| CN106597268A (en) * | 2016-11-11 | 2017-04-26 | 陕西斯瑞新材料股份有限公司 | Action characteristic model for high-voltage switch |
| CN107991607A (en) * | 2018-01-11 | 2018-05-04 | 南方电网科学研究院有限责任公司 | One kind is used for high voltage DC breaker branch wire time measuring device |
| CN108152733A (en) * | 2018-03-06 | 2018-06-12 | 广西电网有限责任公司桂林供电局 | A kind of live detection branch wire time method for mechanical characteristic of high-voltage circuit breaker |
| CN110501637A (en) * | 2019-09-23 | 2019-11-26 | 贵州电网有限责任公司 | A kind of high-tension switch gear acting characteristic polymerization analysis diagnostic device and method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB919622A (en) * | 1958-12-08 | 1963-02-27 | Licentia Gmbh | A testing arrangement for high-voltage circuit-breaker |
| CN101701881A (en) * | 2009-11-10 | 2010-05-05 | 广州锐翔电力工程设备有限公司 | Mechanical property state monitor of circuit breaker |
| US20110128005A1 (en) * | 2009-11-30 | 2011-06-02 | Utility Relay Company, Ltd. | Sluggish circuit breaker detection system and method |
| CN103336243A (en) * | 2013-07-01 | 2013-10-02 | 东南大学 | Breaker fault diagnosis method based on separating/closing coil current signals |
| CN103487748A (en) * | 2013-09-05 | 2014-01-01 | 许昌学院 | Method for calculating switching-off and switching-on time of breaker and stroke of moving contact of breaker |
| CN203705604U (en) * | 2013-11-26 | 2014-07-09 | 国家电网公司 | High-voltage circuit breaker status on-line monitoring system |
-
2014
- 2014-09-12 CN CN201410465289.4A patent/CN104237780B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB919622A (en) * | 1958-12-08 | 1963-02-27 | Licentia Gmbh | A testing arrangement for high-voltage circuit-breaker |
| CN101701881A (en) * | 2009-11-10 | 2010-05-05 | 广州锐翔电力工程设备有限公司 | Mechanical property state monitor of circuit breaker |
| US20110128005A1 (en) * | 2009-11-30 | 2011-06-02 | Utility Relay Company, Ltd. | Sluggish circuit breaker detection system and method |
| CN103336243A (en) * | 2013-07-01 | 2013-10-02 | 东南大学 | Breaker fault diagnosis method based on separating/closing coil current signals |
| CN103487748A (en) * | 2013-09-05 | 2014-01-01 | 许昌学院 | Method for calculating switching-off and switching-on time of breaker and stroke of moving contact of breaker |
| CN203705604U (en) * | 2013-11-26 | 2014-07-09 | 国家电网公司 | High-voltage circuit breaker status on-line monitoring system |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104502837A (en) * | 2014-12-15 | 2015-04-08 | 清华大学 | Diagnostic method and device for mechanical fault of circuit breaker |
| CN105548876A (en) * | 2016-01-28 | 2016-05-04 | 国网北京市电力公司 | Method and device for detection of mechanical features of disconnection switch |
| CN105548876B (en) * | 2016-01-28 | 2018-07-27 | 国网北京市电力公司 | A kind of disconnecting switch mechanical property detection method and device |
| CN105866669A (en) * | 2016-05-19 | 2016-08-17 | 华南理工大学 | Circuit breaker breaking-closing control loop fault diagnosis method |
| CN106597268A (en) * | 2016-11-11 | 2017-04-26 | 陕西斯瑞新材料股份有限公司 | Action characteristic model for high-voltage switch |
| CN107991607A (en) * | 2018-01-11 | 2018-05-04 | 南方电网科学研究院有限责任公司 | One kind is used for high voltage DC breaker branch wire time measuring device |
| CN108152733A (en) * | 2018-03-06 | 2018-06-12 | 广西电网有限责任公司桂林供电局 | A kind of live detection branch wire time method for mechanical characteristic of high-voltage circuit breaker |
| CN108152733B (en) * | 2018-03-06 | 2020-04-14 | 广西电网有限责任公司桂林供电局 | Method for detecting opening and closing time in electrified mode for mechanical characteristics of high-voltage circuit breaker |
| CN110501637A (en) * | 2019-09-23 | 2019-11-26 | 贵州电网有限责任公司 | A kind of high-tension switch gear acting characteristic polymerization analysis diagnostic device and method |
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