CN105629162A - Method for predicting failure rate of rail vehicle breaker - Google Patents

Method for predicting failure rate of rail vehicle breaker Download PDF

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Publication number
CN105629162A
CN105629162A CN201610008042.9A CN201610008042A CN105629162A CN 105629162 A CN105629162 A CN 105629162A CN 201610008042 A CN201610008042 A CN 201610008042A CN 105629162 A CN105629162 A CN 105629162A
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chopper
project
function
data
fault rate
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CN105629162B (en
Inventor
薛淑胜
宋雪松
盛银胜
朱爱凤
冷映丽
张恒
周爱萍
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CRRC Nanjing Puzhen Co Ltd
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CRRC Nanjing Puzhen Co Ltd
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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
    • G01R31/3277—Testing of circuit interrupters, switches or circuit-breakers of low voltage devices, e.g. domestic or industrial devices, such as motor protections, relays, rotation switches

Abstract

The invention discloses a method for predicting a failure rate of a rail vehicle breaker. The method is realized on the basis of the breaker data of the former item, and reduces the influence factors to 2 by comparing with the traditional standard of the breaker working fault prediction; and other data all comes from the former item, which dramatically increases the credibility of the working fault rate prediction of the new item breaker. Compared with the traditional standard fault prediction, the invention is much simpler, and, for the hundreds of the breakers for the train design usage, the invention can save manpower and time. The invention can perform calculation of the rated fault rate, establishes the breaker rated fault rate database, provides the data support to the choice of the reliability-centered breakers according to the different suppliers, and provides the solid foundation to the reliability of the train.

Description

A kind of method of predicted orbit vehicle circuit breaker failure rate
Technical field
A kind of method that the present invention relates to predicted orbit vehicle circuit breaker failure rate, belongs to reliability parts work failure rate electric powder prediction.
Background technology
The prediction of chopper work failure rate is the data basis of reliability design, if application MIL-HDBK-217F " Reliabilitypredictionofelectronicequipment " carries out chopper work failure rate prediction, it needs to be determined that factor and parameter include basic failure rate, environmental coefficient, quality coefficient, application stress coefficient, contact configuration coefficients is totally 5 kinds of factors, and owing to not having the information such as quality to cause quality coefficient to obtain and basic failure rate is the statistics of product industry, and can not the basic failure rate of accurate representation a certain kind specification circuit breaker, applied environment adopts General Mobile classification GM1 simultaneously, can not truly concrete reflection chopper in the influence degree of train environment condition, the accuracy of these defective effects above-mentioned chopper work failure rate prediction and conviction property. and based on the method that conventional project chopper actual operating data predicts new projects' fault rate, and only need to determine application stress and 2 kinds of parameters of contact configuration, manpower can be saved. and other parameter is from project data before, greatly adds the credibility of new projects' chopper work failure rate prediction.
Summary of the invention
The technical problem to be solved is: overcome the deficiencies in the prior art, a kind of method that predicted orbit vehicle circuit breaker failure rate is provided, it realizes based on conventional project chopper actual operating data, requirement when meeting new projects' reliability design, chopper work failure rate predicted, saves manpower simultaneously and increases the credibility of new projects' chopper work failure rate prediction.
In order to solve above technical problem, the one of the present invention
The method of predicted orbit vehicle circuit breaker failure rate, comprises the steps:
The first step, to choose ambient parameter in history item data identical with prediction project and have data based on the project of same model chopper, and obtains this basic data;
Each function operation time of all model choppers in second step, the calculating each project of basic data, in project j, the working time of the function k of chopper i is ti,j,k,ti,j,k=ni,j,k��kt i,j,k��tj, wherein, ni,j,kRepresent that chopper i is in the project j quantity for function k; kt i,j,kRepresent that chopper i is at the project j coefficient of utilization for function k, tjThe working time of expression project j;
The physical fault rate of all each functions of model chopper, chopper i function k physical fault rate in project j in 3rd step, the calculating each project of basic dataWherein: Ni,j,kRepresent that chopper i is in the project j number of faults occurred for function k duration of work;
The design stress factor of all each functions of model chopper, the design stress factor C of chopper i function k in project j in 4th step, the calculating each project of basic datai,j,k=��U(i,j,k)����C(i,j,k), wherein: ��U(i,j,k)Represent that chopper i is at the project j application stress coefficient for function k; ��C(i,j,k)Represent that chopper i is in the project j contact configuration coefficients for function k;
The specified fault rate of the identical chopper of all models each function chopper, the specified fault rate of chopper i function k in project j in 5th step, the calculating each project of basic data
The specified fault rate of all model choppers in 6th step, calculating basic data project, the specified fault rate of chopper i isWherein tiIt it is the total use time of statistics projects chopper i t i = Σ j Σ k t i , j , k ;
The prediction fault rate of chopper i in 7th step, calculating new projectsWherein, ��uFor the chopper i application stress coefficient at new projects' New function, ��cFor the chopper i contact configuration coefficients at new projects' New function.
The present invention is further improved by:
1, perform before the first step first to by history item data building database, data base includes in the ambient parameter of projects, projects the contact configuration coefficients of concrete model breaker in concrete model chopper application stress coefficient, projects.
2, first set up specified failure-rate data storehouse according to history item data before execution the 7th step, data base includes the specified fault rate of concrete model chopper, sets up application stress coefficient and the contact configuration coefficients of chopper new projects New function simultaneously.
The chopper work failure rate prediction of conventional project has two standards 1. to predict according to GJB/Z299C-2006 " reliability of electronic equipment expectation handbook ", this standard only provides one definite value of circuit breaker failure rate, do not distinguish the impact of the factors such as quality, supplier, running environment, application stress and contact configuration, reduce accuracy and the credibility of the prediction of circuit breaker failure rate; 2. predicting according to MIL-HDBK-217F " Reliabilitypredictionofelectronicequipment ", this standard adopts stress method prediction chopper work failure rate, establishes chopper work failure rate forecast model. Real work, adopts MIL-HDBK-217F " Reliabilitypredictionofelectronicequipment " to predict the work failure rate of chopper more.
The chopper work failure rate of conventional project is according to MIL-HDBK-217F " Reliabilitypredictionofelectronicequipment ": ��p=��b����C����U����Q����E, in formula, ��bRepresent basic failure rate, ��ERepresent environmental coefficient, ��QRepresent quality coefficient, ��URepresent application stress coefficient, ��CRepresent contact configuration coefficients, for the chopper of same specification (model), basic failure rate ��bThered is provided by manufacturer, for constant, when chopper is applied in a certain detailed programs, environmental coefficient ��E, quality coefficient ��QRelative constancy. So can make the specified fault rate �� of chopperr=��b����Q����E, it is seen then that for detailed programs, due to the �� of model chopper concrete in projectb����E����QThese parameter relative constancy, therefore specified basic failure rate ��rAlso relative constancy, for the new projects that environment facies are same, then the work failure rate of chopper iAnd ��rCan be obtained by practical operation situation in history item. Owing to disparity items guarantee period distance travelled is had any different, then should go more to consider the project that distance travelled is longer, therefore invention introduces the scheme of weight distribution, make prediction more accurate.
The inventive method decreases influence factor's number, from it needs to be determined that factor and parameter include basic failure rate, environmental coefficient, quality coefficient, contact configuration coefficients, application stress coefficient, reduce to contact configuration coefficients, application 2 kinds of parameters of stress coefficient only need to be determined, manpower can be saved. And other parameter is from project data before, greatly adds the credibility of new projects' chopper work failure rate prediction.
Visible, this method ingenious conception, computing formula are simple, and parameter factor reduces, and production efficiency improves, and add the credibility of new projects' chopper work failure rate prediction. This patent will be widely used in the prediction of field of track traffic reliability chopper, have good market prospect.
Detailed description of the invention
Below in conjunction with example, the present invention is described in further detail. But the invention is not restricted to given example.
For the model of ABB AB of supplier offer for S260UC chopper; breaking characteristics meet the C type of IEC60898-2 standard; rated current 0.5 63A; rated voltage 1P:DC220V, 2P:DC220V/440V, 3P:DC630V, 4P:DC800V; specified ultimate short-circuit breaking capacity 10KA, adopts special magnetic blow-out and arc quenching system, is simultaneously suitable for overload and the short trouble protection of DC low voltage distribution system; operating temperature is-25-55 DEG C, mechanical life (circulation) 20000 times.
One, project data (as shown in table 1) before
In first (j=1) project (Shenzhen 4 line metro project), use 1. remote input output module chopper RIOMCB, 4 cars are organized into groups every trains and are installed 12, train wake up after to train dormant circuit all in electriferous state, coefficient of utilization ki,j,k t=1.0, it closes �� for non-powerU=1.0, contact configuration adopts single-pole single-throw(SPST SPST form ��C=1.0; 2. encoder chopper ENCCB, only installs at drivers' cab, and every train installs 2, and only the drivers' cab of respective end activates, and is just in electriferous state, coefficient of utilization ki,j,k t=0.5, what it was also used for non-power closes ��U=1.0, contact configuration is also adopted by single-pole single-throw(SPST SPST form ��C=1.0. In the statistics guarantee period, 24 trains run time t altogetherj=426096 (h), remote input output module chopper RIOMCB breaks down 4 altogether, and encoder chopper ENCCB does not break down. Calculate 1. remote input output module chopper RIOMCB physical fault rateSpecified fault rate2. encoder chopper ENCCB physical fault rateSpecified fault rate
In second (j=2) project (Nanjing 2 line project), using and 1. stop anti-braking instruction chopper PBDCB, every train installs 2, and when only train applies to stop anti-braking, circuit is all in electriferous state, coefficient of utilization ki,j,k t=0.3, it closes �� for non-powerU=1.0, contact configuration adopts single-pole single-throw(SPST SPST form ��C=1.0; 2. compartment network service chopper CMSCB, 6 cars of train are organized into groups every trains and are installed 12, train wake up after to train dormancy, compartment network is all available, is in electriferous state, coefficient of utilization ki,j,k t=1.0, what it was also used for non-power closes ��U=1.0, contact configuration adopts double-pole single-throw (D.P.S.T.) DPST form ��C=2.0. In the statistics guarantee period, 28 trains run time t altogetherj=459900 (h), stops anti-braking instruction chopper PBDCB and breaks down 1, and compartment network service chopper CMSCB breaks down 6. Calculate 1. remote input output module chopper and stop anti-braking instruction chopper PBDCB physical fault rateSpecified fault rate2. compartment network service chopper CMSCB physical fault rateSpecified fault rate
Each specified fault rate of function chopper of two projects is carried out weight distribution, obtains the specified fault rate of this model chopper:
λ i r = Σ j Σ k λ i , j , k r × t i , j , k / t i = ( 7.82 * 5113152 + 0 * 426096 + 36.2 * 275940 + 5.45 * 5518800 ) * 10 - 7 11333988 = 7.06 * 10 - 7
Table 1
In the line second phase project of Shanghai newly developed 13, auxiliary power supply chopper MACB still selects the model that supplier provides to be S260UC chopper, closing for non-power, selects triple-pole single throw contact collocation form.
New projects auxiliary power supply chopper MACB, closing for non-power, ��U=1.0; Contact configuration adopts triple-pole single throw 3PST form, ��C=3.0.
According to the formula in the present invention the 7th step, the work failure rate predictive value of this relay in new projects
λ i w = λ i r × π u × π c = 7.06 * 10 - 7 * 1.0 * 3.0 = 2.118 * 10 - 6
Application normative forecast chopper work failure rate, predicts the outcome with the embodiment of the present invention and contrasts below.
1. application GJB/Z299C-2006 normative forecast chopper work failure rate
Application GJB/Z299C-2006 normative forecast chopper work failure rate, circuit breaker failure rate is 8.16*10-6, its fault rate gives a definite value, does not distinguish the factors such as quality, reduces the credibility of accuracy and prediction.
2. application MIL-HDBK-217F normative forecast chopper work failure rate
��p=��b����C����U����Q����E=0.34*3.0*1.0*8.4*15*10-6=1.285*10-4
The comparison that the chopper work failure rate undertaken by above two method is predicted the outcome, can be concluded that
(1) application GJB/Z299C-2006 normative forecast chopper work failure rate, its fault rate gives a definite value, does not distinguish the factors such as quality, reduces the credibility of accuracy and prediction. And based on the data of conventional operation information (project experiences), carry out new projects' circuit breaker failure rate prediction and have more credibility.
(2) the fault rate predictive value difference that application MIL-HDBK-217F standard carries out is very big, this requires that the prediction of fault rate by the reason of the data of conventional operation information (project experiences), must adopt service data to carry out fault rate prediction more accurately with more credible just.
(2) the method adopting this patent is simpler than adopting MIL-HDBK-217F standard to carry out fault rate prediction, train design is used to hundreds of chopper, adopts the method for this patent can save manpower and time.
(3) adopt this patent to carry out the calculating of specified basic failure rate, and then set up the specified failure-rate data storehouse of chopper, it is possible to provide data support for the type selecting of different manufacturers different size chopper in design. Provide the foundation for train reliability level.
In addition to the implementation, the present invention can also have other embodiments. All employings are equal to replacement or the technical scheme of equivalent transformation formation, all fall within the protection domain of application claims.

Claims (3)

1. a method for predicted orbit vehicle circuit breaker failure rate, comprises the steps:
The first step, to choose ambient parameter in history item data identical with prediction project and have data based on the project of same model chopper, and obtains this basic data;
Each function operation time of all model choppers in second step, the calculating each project of basic data, in project j, the working time of the function k of chopper i is ti,j,k,ti,j,k=ni,j,k��kt i,j,k��tj, wherein, ni,j,kRepresent that chopper i is in the project j quantity for function k; kt i,j,kRepresent that chopper i is at the project j coefficient of utilization for function k, tjThe working time of expression project j;
The physical fault rate of all each functions of model chopper, chopper i function k physical fault rate in project j in 3rd step, the calculating each project of basic dataWherein: Ni,j,kRepresent that chopper i is in the project j number of faults occurred for function k duration of work;
The design stress factor of all each functions of model chopper, the design stress factor C of chopper i function k in project j in 4th step, the calculating each project of basic datai,j,k=��U(i,j,k)����C(i,j,k), wherein: ��U(i,j,k)Represent that chopper i is at the project j application stress coefficient for function k; ��C(i,j,k)Represent that chopper i is in the project j contact configuration coefficients for function k;
The specified fault rate of the identical chopper of all models each function chopper, the specified fault rate of chopper i function k in project j in 5th step, the calculating each project of basic data
The specified fault rate of all model choppers in 6th step, calculating basic data project, the specified fault rate of chopper i isWherein tiIt it is the total use time of statistics projects chopper i t i = Σ j Σ k t i , j , k ;
The prediction fault rate of chopper i in 7th step, calculating new projectsWherein, ��uFor the chopper i application stress coefficient at new projects' New function, ��cFor the chopper i contact configuration coefficients at new projects' New function.
2. the method for predicted orbit vehicle circuit breaker failure rate according to claim 1, it is characterized in that: perform before the first step first to by history item data building database, data base includes in the ambient parameter of projects, projects the contact configuration coefficients of concrete model breaker in concrete model chopper application stress coefficient, projects.
3. the method for predicted orbit vehicle chopper work failure rate according to claim 1, it is characterized in that: before performing the 7th step, first set up specified failure-rate data storehouse according to history item data, data base includes the specified fault rate of concrete model chopper, sets up application stress coefficient and the contact configuration coefficients of chopper new projects New function simultaneously.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106444707A (en) * 2016-09-30 2017-02-22 中车南京浦镇车辆有限公司 Method for forecasting work failure rate of switches of railway vehicle

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Publication number Priority date Publication date Assignee Title
KR100549396B1 (en) * 2004-05-18 2006-02-03 유인기 Apparatus for Breaking Leakage Circuit and Manufacturing Method Thereof
CN102496918A (en) * 2011-12-14 2012-06-13 镇江大全赛雪龙牵引电气有限公司 Quick tripping device of DC breaker of DC traction power supply switch apparatus
CN102981119A (en) * 2012-08-10 2013-03-20 南车南京浦镇车辆有限公司 Method for predicting railway vehicle relay work failure rate
CN104569801A (en) * 2014-12-27 2015-04-29 中国西电电气股份有限公司 Characteristic test device and method for alternating-and-direct-current dual-purpose low-voltage circuit breaker

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100549396B1 (en) * 2004-05-18 2006-02-03 유인기 Apparatus for Breaking Leakage Circuit and Manufacturing Method Thereof
CN102496918A (en) * 2011-12-14 2012-06-13 镇江大全赛雪龙牵引电气有限公司 Quick tripping device of DC breaker of DC traction power supply switch apparatus
CN102981119A (en) * 2012-08-10 2013-03-20 南车南京浦镇车辆有限公司 Method for predicting railway vehicle relay work failure rate
CN104569801A (en) * 2014-12-27 2015-04-29 中国西电电气股份有限公司 Characteristic test device and method for alternating-and-direct-current dual-purpose low-voltage circuit breaker

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106444707A (en) * 2016-09-30 2017-02-22 中车南京浦镇车辆有限公司 Method for forecasting work failure rate of switches of railway vehicle

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