CN107085184A - Obtain primary cut-out can open and close times method and device - Google Patents

Obtain primary cut-out can open and close times method and device Download PDF

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Publication number
CN107085184A
CN107085184A CN201710332670.7A CN201710332670A CN107085184A CN 107085184 A CN107085184 A CN 107085184A CN 201710332670 A CN201710332670 A CN 201710332670A CN 107085184 A CN107085184 A CN 107085184A
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China
Prior art keywords
primary cut
arc
arc energy
msub
open
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Inventor
华栋
汪隆君
侯瑞云
崔佩仪
谭玉丹
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Guangdong Sino Guangdong Electric Technology Co Ltd
ZHUHAI YINENG ELECTRONIC TECHNOLOGY Co Ltd
Guangdong Jun Hua Energy Technology Co Ltd
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Guangdong Sino Guangdong Electric Technology Co Ltd
ZHUHAI YINENG ELECTRONIC TECHNOLOGY Co Ltd
Guangdong Jun Hua Energy Technology Co Ltd
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Publication of CN107085184A publication Critical patent/CN107085184A/en
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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)
  • Arc-Extinguishing Devices That Are Switches (AREA)

Abstract

The invention discloses it is a kind of obtain primary cut-out can open and close times method and device.Wherein, this method includes：The operational factor for the primary cut-out that acquisition terminal is collected is received, wherein, operational factor includes open and close times and drop-out current；The accumulative arc energy of primary cut-out is determined according to operational factor；Emulated using matlab, obtain the first arc energy of primary cut-out when primary cut-out is worked with breaking current；Emulated using matlab, obtain the second arc energy of primary cut-out when primary cut-out is worked with rated current；According to accumulative arc energy, the first arc energy and the second arc energy calculate primary cut-out can open and close times.The present invention is solved can the high technical problem of the power grid operation management cost that causes of open and close times due to can not accurately obtain primary cut-out.

Description

Obtain primary cut-out can open and close times method and device
Technical field
The present invention relates to power domain, in particular to it is a kind of obtain primary cut-out can open and close times method and Device.
Background technology
With expanding economy, net capacity increases sharply, requirement more and more higher of the power system to power supply reliability. Power equipment is the primary element of power system, be ensure power system security, stably, the basis of economical operation.High pressure open circuit Device is most important high-tension switch gear in power system, and it plays dual parts of controlling and protected in power network, if high pressure Breaker, which breaks down, can cause large-area power-cuts, cause huge economic loss.
In power system, primary cut-out quantity is more, is periodically tieed up at a certain time interval according to traditional The scheduled overhaul pattern repaiied is overhauled, and there is following deficiency：Blindly repair, maintenance capacity is big, costly, provisional maintenance Frequently, bring new hidden danger, maintenance not enough or repair surplus etc..Show according to statistics, during breaker overhaul, due to maintenance personal's Technology and technological problemses, many new defects can be caused by dismounting, and time-intensive, expensive, and 10% or so in breaker maintenance cost is just Caused by being due to incorrect maintenance.At the same time, exceeded power equipment in certain areas breaker maintenance cost always to safeguard More than half taken, and 60% in breaker maintenance cost is used for light maintenance and the regular maintenance of breaker.
For it is above-mentioned due to can not accurately obtain primary cut-out can the power grid operation management cost that causes of open and close times it is high The problem of, effective solution is not yet proposed at present.
The content of the invention
The embodiments of the invention provide it is a kind of obtain primary cut-out can open and close times method and device, at least to solve Can the high technical problem of the power grid operation management cost that causes of open and close times due to can not accurately obtain primary cut-out.
One side according to embodiments of the present invention there is provided it is a kind of obtain primary cut-out can open and close times method, Including：The operational factor for the primary cut-out that acquisition terminal is collected is received, wherein, operational factor includes open and close times and opened Power-off stream；The accumulative arc energy of primary cut-out is determined according to operational factor；Emulated using matlab, obtain height and break First arc energy of primary cut-out when road device is worked with breaking current；Emulated using matlab, obtain high pressure open circuit Second arc energy of primary cut-out when device is worked with rated current；According to accumulative arc energy, the first arc energy and Two arc energies calculate primary cut-out can open and close times.
Further, the step of accumulative arc energy that primary cut-out is determined according to operational factor, includes：By as follows First formula, determines the accumulative arc energy Q of primary cut-out：Wherein, (I1)iCollected for acquisition terminal Drop-out current when primary cut-out ith is acted, n is open and close times, and α is the first weight coefficient.
Further, emulated using matlab, obtain primary cut-out when primary cut-out is worked with breaking current The first arc energy the step of include：Emulated using matlab, it is high when acquisition primary cut-out is worked with breaking current First arc time of voltage breaker；The first arc energy of primary cut-out is determined by breaking current and the first arc time Amount.
Further, the step of the first arc energy of primary cut-out is determined by breaking current and the first arc time Suddenly include：By following second formula, the first arc energy Q of primary cut-out is determined1：Wherein, ibTo divide Power-off stream, t1For the first arc time, β is the second weight coefficient.
Further, emulated using matlab, obtain primary cut-out when primary cut-out is worked with rated current The second arc energy the step of include：Emulated using matlab, it is high when acquisition primary cut-out is worked with rated current Second arc time of voltage breaker；The second arc energy of primary cut-out is determined by rated current and the second arc time Amount.
Further, the step of the second arc energy of primary cut-out is determined by rated current and the second arc time Suddenly include：The second arc energy Q of primary cut-out is determined by following 3rd formula2：Wherein, irFor volume Determine electric current, t2For the second arc time, β is the second weight coefficient.
Further, primary cut-out is calculated according to accumulative arc energy, the first arc energy and the second arc energy It can include the step of open and close times：By following 4th formula, calculate primary cut-out can open and close times m：Wherein, n is open and close times, and Q is accumulative arc energy, Q1For the first arc energy, Q2For the second electricity Arc energy.
Another aspect according to embodiments of the present invention, additionally provide it is a kind of obtain primary cut-out can open and close times dress Put, including：Receiving unit, the operational factor for receiving the primary cut-out that acquisition terminal is collected, wherein, operational factor bag Include open and close times and drop-out current；First arithmetic element, the accumulative electric arc for determining primary cut-out according to operational factor Energy；First simulation unit, for being emulated using matlab, is obtained height when primary cut-out is worked with breaking current and broken First arc energy of road device；Second simulation unit, for being emulated using matlab, obtains primary cut-out with specified electricity Second arc energy of primary cut-out when flowing work；Second arithmetic element, for according to accumulative arc energy, the first arc energy Amount can open and close times with the second arc energy calculating primary cut-out.
Further, the first simulation unit includes：First emulation subelement, for being emulated using matlab, is obtained When primary cut-out is worked with breaking current, the first arc time of primary cut-out；First determination subelement, for by dividing Power-off stream and the first arc time determine the first arc energy of primary cut-out.
Further, the second simulation unit includes：Second emulation subelement, for being emulated using matlab, is obtained When primary cut-out is worked with rated current, the second arc time of primary cut-out；Second determination subelement, for passing through volume Determine electric current and the second arc time determined the second arc energy of primary cut-out.
In embodiments of the present invention, using the operational factor for receiving the primary cut-out that acquisition terminal is collected, wherein, fortune Row parameter includes open and close times and drop-out current；The accumulative arc energy of primary cut-out is determined according to operational factor；Utilize Matlab is emulated, and obtains the first arc energy of primary cut-out when primary cut-out is worked with breaking current；Utilize Matlab is emulated, and obtains the second arc energy of primary cut-out when primary cut-out is worked with rated current；According to tired Count arc energy, the first arc energy and the second arc energy calculate primary cut-out can open and close times mode, solve Can the high technical problem of the power grid operation management cost that causes of open and close times due to can not accurately obtain primary cut-out.
Brief description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, this hair Bright schematic description and description is used to explain the present invention, does not constitute inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 be according to embodiments of the present invention one it is a kind of it is optional obtain primary cut-out can open and close times method stream Cheng Tu；
Fig. 2 be according to embodiments of the present invention two it is a kind of it is optional obtain primary cut-out can the devices of open and close times show It is intended to.
Embodiment
In order that those skilled in the art more fully understand the present invention program, below in conjunction with the embodiment of the present invention Accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only The embodiment of a part of the invention, rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill people The every other embodiment that member is obtained under the premise of creative work is not made, should all belong to the model that the present invention is protected Enclose.
It should be noted that term " first " in description and claims of this specification and above-mentioned accompanying drawing, " Two " etc. be for distinguishing similar object, without for describing specific order or precedence.It should be appreciated that so using Data can exchange in the appropriate case, so as to embodiments of the invention described herein can with except illustrating herein or Order beyond those of description is implemented.In addition, term " comprising " and " having " and their any deformation, it is intended that cover Lid is non-exclusive to be included, for example, the process, method, system, product or the equipment that contain series of steps or unit are not necessarily limited to Those steps or unit clearly listed, but may include not list clearly or for these processes, method, product Or the intrinsic other steps of equipment or unit.
Embodiment one
According to embodiments of the present invention there is provided it is a kind of obtain primary cut-out can open and close times embodiment of the method, it is necessary to Illustrate, can be in the computer system of such as one group computer executable instructions the step of the flow of accompanying drawing is illustrated Perform, and, although logical order is shown in flow charts, but in some cases, can be with suitable different from herein Sequence performs shown or described step.
Fig. 1 be according to embodiments of the present invention one it is a kind of it is optional obtain primary cut-out can open and close times method stream Cheng Tu, as shown in figure 1, this method comprises the following steps：
Step S102, receives the operational factor for the primary cut-out that acquisition terminal is collected, wherein, operational factor is included Open and close times and drop-out current.
Specifically, operational factor when acquisition terminal can gather primary cut-out work in real time, acquisition terminal can be with It is the collecting unit of photo-electricity mutual-inductor or monitoring high-voltage circuit-breaker switching on-off auxiliary contact.Acquisition terminal can be by height The open and close times of voltage breaker, and drop-out current when cut-offfing action is sent to processor every time.
Step S104, the accumulative arc energy of primary cut-out is determined according to operational factor.
Specifically, processor calculates the accumulative electricity of primary cut-out according to the open and close times and drop-out current received Arc energy.
Step S106, is emulated using matlab, obtains primary cut-out when primary cut-out is worked with breaking current The first arc energy.
Specifically, artificial circuit is built in matlab, when setting primary cut-out is worked with breaking current, can be obtained Simulation result, simulation result can be between arc current and the relation curve of time between High Voltage Circuit Breaker Contacts, contact voltage and when Between relation curve and High Voltage Circuit Breaker Contacts arc current curve and the partial enlarged drawing of time etc..Tied by above-mentioned emulation When fruit can obtain primary cut-out and be worked with breaking current, the first arc energy of primary cut-out.
Step S108, is emulated using matlab, obtains primary cut-out when primary cut-out is worked with rated current The second arc energy.
Specifically, artificial circuit is built in matlab, when setting primary cut-out is worked with rated current, can be obtained Simulation result, simulation result can be between arc current and the relation curve of time between High Voltage Circuit Breaker Contacts, contact voltage and when Between relation curve and High Voltage Circuit Breaker Contacts arc current curve and the partial enlarged drawing of time etc..Tied by above-mentioned emulation When fruit can obtain primary cut-out and be worked with rated current, the second arc energy of primary cut-out.
Step S110, primary cut-out is calculated according to accumulative arc energy, the first arc energy and the second arc energy Can open and close times.
In embodiments of the present invention, by using above-mentioned steps S102 to step S110, receive what acquisition terminal was collected The operational factor of primary cut-out, wherein, operational factor includes open and close times and drop-out current；Determined according to operational factor high The accumulative arc energy of voltage breaker；Emulated using matlab, obtain high pressure when primary cut-out is worked with breaking current First arc energy of breaker；Emulated using matlab, obtain height when primary cut-out is worked with rated current and break Second arc energy of road device；Primary cut-out is calculated according to accumulative arc energy, the first arc energy and the second arc energy Can open and close times mode, solve due to can not accurately obtain primary cut-out can open and close times cause operation of power networks dimension Protect the high technical problem of cost.
Alternatively, the step of accumulative arc energy that primary cut-out is determined according to operational factor, includes：
By following first formula, the accumulative arc energy Q of primary cut-out is determined：
Wherein, (I1)iDrop-out current when being acted for the primary cut-out ith that acquisition terminal is collected, n is to have cut-off Number of times, α is the first weight coefficient.
Specifically, α is the first weight coefficient, for example, can be 2.Open and close times n natural numbers, for example, can be 20.
Alternatively, step S106, is emulated using matlab, obtains high pressure when primary cut-out is worked with breaking current First arc energy of breaker can include：
Step S1061, is emulated using matlab, when acquisition primary cut-out is worked with breaking current, high pressure open circuit First arc time of device.
Step S1063, the first arc energy of primary cut-out is determined by breaking current and the first arc time.
Alternatively, step S1063, the first electric arc of primary cut-out is determined by breaking current and the first arc time Energy can include：
By following second formula, the first arc energy Q of primary cut-out is determined1：
Wherein, ibFor breaking current, t1For the first arc time, β is the second weight coefficient.
Specifically, breaking current ibIt can be 31.5KA, the second weight coefficient β is constant, can be 1.7.
Alternatively, step S108, is emulated using matlab, obtains high pressure when primary cut-out is worked with rated current Second arc energy of breaker can include：
Step S1081, is emulated using matlab, when acquisition primary cut-out is worked with rated current, high pressure open circuit Second arc time of device.
Step S1083, the second arc energy of primary cut-out is determined by rated current and the second arc time.
Alternatively, step S1083, the second electric arc of primary cut-out is determined by rated current and the second arc time Energy can include：
The second arc energy Q of primary cut-out is determined by following 3rd formula2：
Wherein, irFor rated current, t2For the second arc time, β is the second weight coefficient.
Specifically, rated current irIt can be 2500A, the second weight coefficient β is constant, can be 1.7.
Alternatively, step S110, calculates height according to accumulative arc energy, the first arc energy and the second arc energy and breaks Road device can open and close times can include：
By following 4th formula, calculate primary cut-out can open and close times m：
Wherein, n is open and close times, and Q is accumulative arc energy, Q1For the first arc energy, Q2For the second arc energy.
Specifically, by above-mentioned 4th formula it can be calculated that primary cut-out cut-offs under rated current, m is being cut-off Maintenance is needed after secondary, under actual field situation, switching capacitance group primary cut-out actual motion electric current is typically smaller than specified Electric current, therefore, in the case where not occurring capacitance group open circuit, primary cut-out it is actual can open and close times would generally be more than m times.
Embodiment two
According to embodiments of the present invention there is provided it is a kind of obtain primary cut-out can open and close times device embodiment, Fig. 2 is According to embodiments of the present invention two it is a kind of it is optional obtain primary cut-out can open and close times device schematic diagram, such as Fig. 2 institutes Show, the device includes：
Receiving unit 40, the operational factor for receiving the primary cut-out that acquisition terminal is collected, wherein, operational factor Including open and close times and drop-out current.
Specifically, operational factor when acquisition terminal can gather primary cut-out work in real time, acquisition terminal can be with It is the collecting unit of photo-electricity mutual-inductor or monitoring high-voltage circuit-breaker switching on-off auxiliary contact.Acquisition terminal can be by height The open and close times of voltage breaker, and drop-out current when cut-offfing action is sent to the receiving unit 40 of processor every time.
First arithmetic element 42, the accumulative arc energy for determining primary cut-out according to operational factor.
Specifically, the first arithmetic element 42 of processor calculates high according to the open and close times and drop-out current received The accumulative arc energy of voltage breaker.
First simulation unit 44, for being emulated using matlab, when acquisition primary cut-out is worked with breaking current First arc energy of primary cut-out.
Specifically, artificial circuit is built in matlab, when setting primary cut-out is worked with breaking current, can be obtained Simulation result, simulation result can be between arc current and the relation curve of time between High Voltage Circuit Breaker Contacts, contact voltage and when Between relation curve and High Voltage Circuit Breaker Contacts arc current curve and the partial enlarged drawing of time etc..Tied by above-mentioned emulation When fruit can obtain primary cut-out and be worked with breaking current, the first arc energy of primary cut-out.
First simulation unit 46, for being emulated using matlab, when acquisition primary cut-out is worked with rated current Second arc energy of primary cut-out.
Specifically, artificial circuit is built in matlab, when setting primary cut-out is worked with rated current, can be obtained Simulation result, simulation result can be between arc current and the relation curve of time between High Voltage Circuit Breaker Contacts, contact voltage and when Between relation curve and High Voltage Circuit Breaker Contacts arc current curve and the partial enlarged drawing of time etc..Tied by above-mentioned emulation When fruit can obtain primary cut-out and be worked with rated current, the second arc energy of primary cut-out.
First arithmetic element 48, for calculating high according to accumulative arc energy, the first arc energy and the second arc energy Voltage breaker can open and close times.
In embodiments of the present invention, by above-mentioned receiving unit 40, for receiving the high pressure open circuit that acquisition terminal is collected The operational factor of device, wherein, operational factor includes open and close times and drop-out current；First arithmetic element 42, for according to fortune Row parameter determines the accumulative arc energy of primary cut-out；First simulation unit 44, for being emulated using matlab, is obtained First arc energy of primary cut-out when primary cut-out is worked with breaking current；First simulation unit 46, for utilizing Matlab is emulated, and obtains the second arc energy of primary cut-out when primary cut-out is worked with rated current；First fortune Unit 48 is calculated, for calculating opening for primary cut-out according to accumulative arc energy, the first arc energy and the second arc energy The mode of disconnected number of times, solving can the power grid operation management cost that causes of open and close times due to can not accurately obtain primary cut-out High technical problem.
Alternatively, the first simulation unit 44 can include：
First emulation subelement, for being emulated using matlab, when acquisition primary cut-out is worked with breaking current, First arc time of primary cut-out；
First determination subelement, the first electricity for determining primary cut-out by breaking current and the first arc time Arc energy.
Alternatively, the first simulation unit 46 can include：
Second emulation subelement, for being emulated using matlab, when acquisition primary cut-out is worked with rated current, Second arc time of primary cut-out；
Second determination subelement, the second electricity for determining primary cut-out by rated current and the second arc time Arc energy.
The embodiments of the present invention are for illustration only, and the quality of embodiment is not represented.
In the above embodiment of the present invention, the description to each embodiment all emphasizes particularly on different fields, and does not have in some embodiment The part of detailed description, may refer to the associated description of other embodiment.
In several embodiments provided herein, it should be understood that disclosed technology contents, others can be passed through Mode is realized.Wherein, device embodiment described above is only schematical, such as division of described unit, Ke Yiwei A kind of division of logic function, can there is other dividing mode when actually realizing, such as multiple units or component can combine or Person is desirably integrated into another system, or some features can be ignored, or does not perform.Another, shown or discussed is mutual Between coupling or direct-coupling or communication connection can be the INDIRECT COUPLING or communication link of unit or module by some interfaces Connect, can be electrical or other forms.
The unit illustrated as separating component can be or may not be it is physically separate, it is aobvious as unit The part shown can be or may not be physical location, you can with positioned at a place, or can also be distributed to multiple On unit.Some or all of unit therein can be selected to realize the purpose of this embodiment scheme according to the actual needs.
In addition, each functional unit in each embodiment of the invention can be integrated in a processing unit, can also That unit is individually physically present, can also two or more units it is integrated in a unit.Above-mentioned integrated list Member can both be realized in the form of hardware, it would however also be possible to employ the form of SFU software functional unit is realized.
If the integrated unit is realized using in the form of SFU software functional unit and as independent production marketing or used When, it can be stored in a computer read/write memory medium.Understood based on such, technical scheme is substantially The part contributed in other words to prior art or all or part of the technical scheme can be in the form of software products Embody, the computer software product is stored in a storage medium, including some instructions are to cause a computer Equipment (can for personal computer, server or network equipment etc.) perform each embodiment methods described of the invention whole or Part steps.And foregoing storage medium includes：USB flash disk, read-only storage (ROM, Read-Only Memory), arbitrary access are deposited Reservoir (RAM, Random Access Memory), mobile hard disk, magnetic disc or CD etc. are various can be with store program codes Medium.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should It is considered as protection scope of the present invention.

Claims (10)

1. it is a kind of obtain primary cut-out can open and close times method, it is characterised in that including：
The operational factor for the primary cut-out that acquisition terminal is collected is received, wherein, the operational factor includes open and close times And drop-out current；
The accumulative arc energy of the primary cut-out is determined according to the operational factor；
Emulated using matlab, obtain the first electric arc of primary cut-out when primary cut-out is worked with breaking current Energy；
Emulated using matlab, obtain second of the primary cut-out when primary cut-out is worked with rated current Arc energy；
The primary cut-out is calculated according to the accumulative arc energy, first arc energy and second arc energy Can open and close times.
2. according to the method described in claim 1, it is characterised in that the primary cut-out is determined according to the operational factor The step of accumulative arc energy, includes：
By following first formula, the accumulative arc energy Q of the primary cut-out is determined：
<mrow> <mi>Q</mi> <mo>=</mo> <munderover> <mo>&amp;Sigma;</mo> <mrow> <mi>i</mi> <mo>=</mo> <mn>1</mn> </mrow> <mi>n</mi> </munderover> <msubsup> <mrow> <mo>(</mo> <msub> <mi>I</mi> <mn>1</mn> </msub> <mo>)</mo> </mrow> <mi>i</mi> <mi>&amp;alpha;</mi> </msubsup> </mrow>
Wherein, (I1)iDrop-out current when being acted for the primary cut-out ith that the acquisition terminal is collected, n is Open and close times, α is the first weight coefficient.
3. according to the method described in claim 1, it is characterised in that emulated using matlab, obtain primary cut-out with Include when breaking current works the step of the first arc energy of the primary cut-out：
Emulated using matlab, obtain primary cut-out when being worked with the breaking current, the of the primary cut-out One arc time；
The first arc energy of the primary cut-out is determined by the breaking current and first arc time.
4. method according to claim 3, it is characterised in that pass through the breaking current and first arc time The step of the first arc energy for determining the primary cut-out, includes：
By following second formula, the first arc energy Q of the primary cut-out is determined1：
<mrow> <msub> <mi>Q</mi> <mn>1</mn> </msub> <mo>=</mo> <msubsup> <mo>&amp;Integral;</mo> <mn>0</mn> <msub> <mi>t</mi> <mn>1</mn> </msub> </msubsup> <mo>|</mo> <msub> <mi>i</mi> <mi>b</mi> </msub> <msup> <mo>|</mo> <mi>&amp;beta;</mi> </msup> <msub> <mi>dt</mi> <mn>1</mn> </msub> </mrow>
Wherein, the ibFor the breaking current, t1For first arc time, β is the second weight coefficient.
5. according to the method described in claim 1, it is characterised in that emulated using matlab, obtain the high pressure open circuit Include when device is worked with rated current the step of the second arc energy of the primary cut-out：
Emulated using matlab, when the acquisition primary cut-out is worked with the rated current, the primary cut-out The second arc time；
The second arc energy of the primary cut-out is determined by the rated current and second arc time.
6. method according to claim 5, it is characterised in that pass through the rated current and second arc time The step of the second arc energy for determining the primary cut-out, includes：
The second arc energy Q of the primary cut-out is determined by following 3rd formula2：
<mrow> <msub> <mi>Q</mi> <mn>2</mn> </msub> <mo>=</mo> <msubsup> <mo>&amp;Integral;</mo> <mn>0</mn> <msub> <mi>t</mi> <mn>2</mn> </msub> </msubsup> <mo>|</mo> <msub> <mi>i</mi> <mi>r</mi> </msub> <msup> <mo>|</mo> <mi>&amp;beta;</mi> </msup> <msub> <mi>dt</mi> <mn>2</mn> </msub> </mrow>
Wherein, the irFor the rated current, t2For second arc time, β is the second weight coefficient.
7. according to the method described in claim 1, it is characterised in that according to the accumulative arc energy, first arc energy Amount and second arc energy calculate can including the step of open and close times for the primary cut-out：
By following 4th formula, calculating the described of primary cut-out can open and close times m：
<mrow> <mi>m</mi> <mo>=</mo> <mfrac> <mi>Q</mi> <mrow> <mi>n</mi> <mo>&amp;times;</mo> <mrow> <mo>(</mo> <msub> <mi>Q</mi> <mn>1</mn> </msub> <mo>+</mo> <msub> <mi>Q</mi> <mn>2</mn> </msub> <mo>)</mo> </mrow> </mrow> </mfrac> </mrow>
Wherein, n is the open and close times, and Q is the accumulative arc energy, Q1For first arc energy, Q2For described Two arc energies.
8. it is a kind of obtain primary cut-out can open and close times device, it is characterised in that including：
Receiving unit, the operational factor for receiving the primary cut-out that acquisition terminal is collected, wherein, the operational factor bag Include open and close times and drop-out current；
First arithmetic element, the accumulative arc energy for determining the primary cut-out according to the operational factor；
First simulation unit, for being emulated using matlab, obtains height when primary cut-out is worked with breaking current First arc energy of voltage breaker；
Second simulation unit, for being emulated using matlab, is obtained the primary cut-out and is worked with rated current when institute State the second arc energy of primary cut-out；
Second arithmetic element, for according to the accumulative arc energy, first arc energy and second arc energy Calculate the primary cut-out can open and close times.
9. device according to claim 8, it is characterised in that first simulation unit includes：
First emulation subelement, for being emulated using matlab, when acquisition primary cut-out is worked with the breaking current, First arc time of the primary cut-out；
First determination subelement, for determining the primary cut-out by the breaking current and first arc time The first arc energy.
10. device according to claim 8, it is characterised in that second simulation unit includes：
Second emulation subelement, for being emulated using matlab, obtains the primary cut-out with the rated current work When making, the second arc time of the primary cut-out；
Second determination subelement, for determining the primary cut-out by the rated current and second arc time The second arc energy.
CN201710332670.7A 2017-04-28 2017-05-12 Obtain primary cut-out can open and close times method and device Pending CN107085184A (en)

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CN2017102957270 2017-04-28

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108051736A (en) * 2017-11-28 2018-05-18 中国电力科学研究院有限公司 A kind of Test model synthetic techniques and system of the switchgear of frequent folding capacity current

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108051736A (en) * 2017-11-28 2018-05-18 中国电力科学研究院有限公司 A kind of Test model synthetic techniques and system of the switchgear of frequent folding capacity current
CN108051736B (en) * 2017-11-28 2020-05-12 中国电力科学研究院有限公司 Test evaluation method and system for switching equipment with capacitive current frequently switched on and switched off

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Application publication date: 20170822