CN106597268A - Action characteristic model for high-voltage switch - Google Patents
Action characteristic model for high-voltage switch Download PDFInfo
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- CN106597268A CN106597268A CN201611040670.1A CN201611040670A CN106597268A CN 106597268 A CN106597268 A CN 106597268A CN 201611040670 A CN201611040670 A CN 201611040670A CN 106597268 A CN106597268 A CN 106597268A
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- switch
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
- G01R31/3271—Testing of circuit interrupters, switches or circuit-breakers of high voltage or medium voltage devices
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The invention discloses an action characteristic model for a high-voltage switch. The action characteristic model comprises time characteristic values (T1, T2, T3, T4, T5) and current characteristic values (I1, I2, I3) of a switch-on/off coil current waveform curve and a current waveform curve, a time difference Delta T (off) of the characteristic value T4 and the switch-off brake, a time difference Delta T (on) of the characteristic value T4 and the switch-on brake, a switch-off time T (off) and a switch-on time T (on); all the characteristic values are located according to the monitored switch-on/off coil current waveform; the switch-off time T (off)=T4+Delta T (off) and the switch-on time T (on)=T4+Delta T (on) are solved by summing the characteristic value T4 and the time difference Delta T (off) and Delta T (on) of the switch-off brake and the switch-on brake. According to the invention, an online monitoring method for the switch-on/off coil current waveform is adopted for acquiring the characteristic quantity of the switch and tripper actions by analyzing the switch-on/off coil current waveform; the switch-on/off time measurement is realized through the logic calculation for the characteristic quantity; the recognizing and the real-time distinguishing for the health state of the product in the running process become convenient.
Description
Technical field
The present invention relates to switch assessment or the assessment technique field of running status and maintenance, it is specifically related to a kind of height and presses off
The acting characteristic model of pass.
Background technology
With the development of intelligent grid, the consumption of switchgear on-Line Monitor Device rises year by year, however, due to monitoring number
According to or curve have it is stronger professional, if there is failure or defect, be to carry out maintenance at once to need for concern, serious close
Overhaul when note or power failure, needing professional to understand just can reach a conclusion, and bring very to the differentiation of product health status in operation
It is big difficult, while cannot also realize differentiation in real time.
By analyzing monitoring curve, switch action characteristic health state evaluation is obtained, determine operation maintenance or maintenance plan
Slightly, it appears more and more important.
It is also one of most important parameter that the branch wire time of switchgear is the most basic of switch action characteristic, its operation
In stability and concordance also represent the quality level of supplier products.Due to the situation in switch product charging operation
Under, it is difficult to measure the divide-shut brake information of switch fracture, switchgear operation management personnel cannot be obtained in real time in product operation
The branch wire time parameter of switchgear, only could measure the parameter in interruption maintenance, and operations staff cannot grasp in real time
The running status of switch.
The content of the invention
Present invention seek to address that in switchgear running, the problem of the measurement for being difficult to realize branch wire time, there is provided
A kind of acting characteristic model of high-voltage switch gear.
The technical solution used in the present invention is as follows：
The acting characteristic model of a kind of high-voltage switch gear, it is characterised in that including divide-shut brake coil current waveform curve, electric current
The temporal characteristics value (T1, T2, T3, T4, T5) of wavy curve and the eigenvalue (I1, I2, I3) of electric current, eigenvalue T4 and separating brake are disconnected
Mouthful time difference Δ T point, eigenvalue T4 and combined floodgate fracture time difference Δ T splitting or integrating lock times T point, closing time T conjunctions；Pass through
The divide-shut brake coil current waveform for monitoring, finds out each eigenvalue, by the eigenvalue T4 and time difference Δ T of divide-shut brake fracture
Divide, Δ T closes summation and solves the T point=T4+ Δ T division and combination lock times T conjunction=T4+ Δs T conjunctions of switch opening time；
0-T1, coil is initially powered up, and coil current is begun to ramp up by 0, but the iron core of now electrical apparatus release is not operating, coil
Inductance is constant, and electric current exponentially rises；
T1-T2, at that time between close T1, during the close I1 of electric current, iron core setting in motion, due to iron core motion produce it is anti-electronic
Gesture so that electric current begins to decline, until motion stops, now electric current is to minima T2；
T2-T3, the now iron core of electrical apparatus release stop motion, because the counter electromotive force that motion is produced disappears, electric current is opened
Begin to rise, until reaching peak point current I3 at the T3 moment；
T3-T4, after switch is moved in place, T4 moment auxiliary switch actions, cut-out divide-shut brake coil current loop；
T4-T5, auxiliary switch cut-out current loop, electric current is reduced to zero.
Further, in such scheme, the eigenvalue T4 is switched with the time difference of switch divide-shut brake fracture to certain
For, it is a metastable value.
Further, in such scheme, by dividing divide-shut brake coil current waveform eigenvalue T4 and time difference Δ T,
Δ T closes the opening time T point=T4+ Δ T division and combination lock times T conjunction=T4+ Δs T conjunctions that summation solves switch.
The invention has the beneficial effects as follows：Method of the present invention using divide-shut brake coil current waveform is monitored on-line, by right
Divide-shut brake coil current waveform is parsed, switched and electrical apparatus release action characteristic quantity, by the logical calculated of characteristic quantity,
Realize branch wire time measure, facilitate operation in product health status differentiation and distinguish in real time.
Description of the drawings
Fig. 1 is divide-shut brake coil current waveform schematic diagram of the present invention.
Specific embodiment
A kind of acting characteristic model of high-voltage switch gear as shown in Figure 1, including divide-shut brake coil current waveform curve, electric current
The temporal characteristics value (T1, T2, T3, T4, T5) of wavy curve and the eigenvalue (I1, I2, I3) of electric current, eigenvalue T4 and separating brake are disconnected
Mouthful time difference Δ T point, eigenvalue T4 and combined floodgate fracture time difference Δ T splitting or integrating lock times T point, closing time T conjunctions；Pass through
The divide-shut brake coil current waveform for monitoring, finds out each eigenvalue, by the eigenvalue T4 and time difference Δ T of divide-shut brake fracture
Point, Δ T closes summation and solves the T point=T4+ Δ T division and combination lock times T conjunction=T4+ Δs T conjunctions of switch opening time；
0-T1, coil is initially powered up, and coil current is begun to ramp up by 0, but the iron core of now electrical apparatus release is not operating, coil
Inductance is constant, and electric current exponentially rises；
T1-T2, at that time between close T1, during the close I1 of electric current, iron core setting in motion, due to iron core motion produce it is anti-electronic
Gesture so that electric current begins to decline, until motion stops, now electric current is to minima T2；
T2-T3, the now iron core of electrical apparatus release stop motion, because the counter electromotive force that motion is produced disappears, electric current is opened
Begin to rise, until reaching peak point current I3 at the T3 moment；
T3-T4, after switch is moved in place, T4 moment auxiliary switch actions, cut-out divide-shut brake coil current loop；
T4-T5, auxiliary switch cut-out current loop, electric current is reduced to zero.
Switch can be measured during divide-shut brake when dispatching from the factory, and T4 and divide-shut brake fracture time difference Δ T point and Δ T is closed, and
Preserve as parameter, be one relatively steady for the eigenvalue T4 is switched with the time difference of switch divide-shut brake fracture to certain
Fixed value.
By monitor on-line divide-shut brake coil current waveform eigenvalue T4, to divide-shut brake coil current waveform eigenvalue T4 with
Time difference Δ T divides, Δ T closes the opening time T point=T4+ Δ T division and combination lock times T conjunction=T4+ Δs T conjunctions that summation solves switch.
Finally it should be noted that：Above example is most only to illustrate technical scheme rather than a limitation
Pipe has been described in detail with reference to above-described embodiment to the present invention, and those of ordinary skill in the art should be understood：Still
The specific embodiment of the present invention can be modified or equivalent, and without departing from any of spirit and scope of the invention
Modification or equivalent, it all should cover in the middle of scope of the presently claimed invention.
Claims (3)
1. the acting characteristic model of a kind of high-voltage switch gear, it is characterised in that including divide-shut brake coil current waveform curve, current wave
The temporal characteristics value (T1, T2, T3, T4, T5) of sigmoid curves and the eigenvalue (I1, I2, I3) of electric current, eigenvalue T4 and separating brake fracture
Time difference Δ T splitting or integrating lock times T point of time difference Δ T point, eigenvalue T4 and combined floodgate fracture, closing time T closes. by supervising
The divide-shut brake coil current waveform for measuring, finds out each eigenvalue, by time difference Δ T point of eigenvalue T4 and divide-shut brake fracture,
Δ T closes summation and solves the T point=T4+ Δ T division and combination lock times T conjunction=T4+ Δs T conjunctions of switch opening time.
0-T1, coil is initially powered up, and coil current is begun to ramp up by 0, but the iron core of now electrical apparatus release is not operating, the inductance of coil
Constant, electric current exponentially rises；
T1-T2, at that time between close T1, during the close I1 of electric current, iron core setting in motion, because iron core motion produces counter electromotive force, makes
Obtain electric current to begin to decline, until motion stops, now electric current is to minima T2；
T2-T3, the now iron core of electrical apparatus release stop motion, because the counter electromotive force that motion is produced disappears, on electric current starts
Rise, until reaching peak point current I3 at the T3 moment；
T3-T4, after switch is moved in place, T4 moment auxiliary switch actions, cut-out divide-shut brake coil current loop；
T4-T5, auxiliary switch cut-out current loop, electric current is reduced to zero.
2. the acting characteristic model of a kind of high-voltage switch gear according to claim 1, it is characterised in that the eigenvalue T4 with
The time difference of switch divide-shut brake fracture is a metastable value for certain switch.
3. the acting characteristic model of a kind of high-voltage switch gear according to claim 1-2, it is characterised in that by divide-shut brake
Coil current waveform eigenvalue T4 and time difference Δ T point, Δ T close summation solve opening time T point=T4+ Δs T point of switch and
Closing time T conjunction=T4+ Δs T is closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611040670.1A CN106597268A (en) | 2016-11-11 | 2016-11-11 | Action characteristic model for high-voltage switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611040670.1A CN106597268A (en) | 2016-11-11 | 2016-11-11 | Action characteristic model for high-voltage switch |
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| Publication Number | Publication Date |
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| CN106597268A true CN106597268A (en) | 2017-04-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611040670.1A Pending CN106597268A (en) | 2016-11-11 | 2016-11-11 | Action characteristic model for high-voltage switch |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107643482A (en) * | 2017-07-25 | 2018-01-30 | 陕西斯瑞新材料股份有限公司 | A kind of on off state judgment models based on coil current waveform |
| CN110333439A (en) * | 2019-06-06 | 2019-10-15 | 全球能源互联网研究院有限公司 | DC circuit breaker closed-loop on-off sub-module test equipment |
| CN110346707A (en) * | 2019-06-06 | 2019-10-18 | 全球能源互联网研究院有限公司 | Dc circuit breaker closed loop opens shutdown submodule test method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040189307A1 (en) * | 2003-03-31 | 2004-09-30 | Rudholm Stig Olov | Methods and apparatus for analyzing high voltage circuit breakers |
| CN203705604U (en) * | 2013-11-26 | 2014-07-09 | 国家电网公司 | High-voltage circuit breaker status on-line monitoring system |
| CN104237780A (en) * | 2014-09-12 | 2014-12-24 | 清华大学 | Characteristic detecting method and device |
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2016
- 2016-11-11 CN CN201611040670.1A patent/CN106597268A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040189307A1 (en) * | 2003-03-31 | 2004-09-30 | Rudholm Stig Olov | Methods and apparatus for analyzing high voltage circuit breakers |
| CN203705604U (en) * | 2013-11-26 | 2014-07-09 | 国家电网公司 | High-voltage circuit breaker status on-line monitoring system |
| CN104237780A (en) * | 2014-09-12 | 2014-12-24 | 清华大学 | Characteristic detecting method and device |
Non-Patent Citations (1)
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| 骆虎 等: "一种基于触头受力监测实现断路器断口判定的方法", 《高压电器》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107643482A (en) * | 2017-07-25 | 2018-01-30 | 陕西斯瑞新材料股份有限公司 | A kind of on off state judgment models based on coil current waveform |
| CN110333439A (en) * | 2019-06-06 | 2019-10-15 | 全球能源互联网研究院有限公司 | DC circuit breaker closed-loop on-off sub-module test equipment |
| CN110346707A (en) * | 2019-06-06 | 2019-10-18 | 全球能源互联网研究院有限公司 | Dc circuit breaker closed loop opens shutdown submodule test method |
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Application publication date: 20170426 |