CN102445657B - Method and device for detecting faults of main circuit breaker of locomotive - Google Patents
Method and device for detecting faults of main circuit breaker of locomotive Download PDFInfo
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- CN102445657B CN102445657B CN201110430603.1A CN201110430603A CN102445657B CN 102445657 B CN102445657 B CN 102445657B CN 201110430603 A CN201110430603 A CN 201110430603A CN 102445657 B CN102445657 B CN 102445657B
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Abstract
The invention provides a method for detecting faults of a main circuit breaker of a locomotive, and the method comprises the steps that a voltage between any two points in a branch circuit of which one end is connected with the main circuit breaker and the other end is grounded is measured; and when the voltage is larger than a predetermined voltage value and an auxiliary contact is disconnected, people are prompted that the main circuit breaker breaks down. The detection method is simple, convenient and easy to operate, and on-line testing of the faults of a vacuum tube of the main circuit breaker is realized.
Description
Technical field
The present invention relates to automatic detection field, relate in particular to a kind of locomotive main circuit-breaker fault detection method and device.
Background technology
Main circuit breaker is in electric locomotive and electric motor car group, to connect or the master switch of disjunction power supply, the main protection switch while doubling as various overloads, short trouble.At present, mainly the auxiliary contact by the main contact interlock with main circuit breaker detects main circuit breaker fault online, when the coil of main circuit breaker obtains when electric, if auxiliary contact is closed, represent that the main contact of main circuit breaker is also in normal closure state, if auxiliary contact disconnects, the main contact that main circuit breaker is described breaks down, when the coil losing electricity of main circuit breaker, if auxiliary contact is opened, represent that the main contact of main circuit breaker is also in normal opening, if but auxiliary contact is closed, the main contact that main circuit breaker is described breaks down, visible, by the state of auxiliary contact, just can detect the fault whether main contact of main circuit breaker disconnects.
But said method only can detect the fault whether main contact of main circuit breaker disconnects, and cannot detect the fault that the vacuum tightness because of the vacuum tube of main circuit breaker declines and occurs.At present, because the detection of main circuit breaker vacuum tube vacuum-degree can only detect by specialized equipment on ground, and can not realize online detection.
Summary of the invention
In view of this, the invention provides a kind of locomotive main circuit-breaker fault detection method and device, object is that solution must not detect the fault of the vacuum decline of main circuit breaker vacuum tube online.
, described main circuit breaker is connected with auxiliary contact, comprising:
Measure one end and be connected with described main circuit breaker and appoint the voltage of point-to-point transmission in the branch road of one end ground connection, when described voltage is greater than default magnitude of voltage and the disconnection of described auxiliary contact, point out described main circuit breaker to break down.
Preferably, described measurement one end is connected with described main circuit breaker in the branch road of one end ground connection and appoints the voltage of point-to-point transmission to comprise:
Measurement one end is connected with described main circuit breaker, the inferior polygonal voltage of the main-transformer of one end ground connection.
Preferably, described default magnitude of voltage is zero.
Preferably, described default magnitude of voltage is 500 volts.
A failure detector, described main circuit breaker is connected with auxiliary contact, comprising:
Voltage measurement unit, is connected with described main circuit breaker for measuring one end, appoints the voltage of point-to-point transmission in the branch road of one end ground connection;
Judgement Tip element, for being greater than default magnitude of voltage when described voltage, and described auxiliary contact is when disconnect, and prompting main circuit breaker breaks down.
Preferably, described voltage measurement unit comprises:
One end is connected with described main circuit breaker, the main-transformer of one end ground connection;
Measure the voltage table of the inferior polygonal voltage of described main-transformer.
Preferably, described voltage table is arranged in the traction control unit of described locomotive.
The disclosed locomotive main circuit-breaker fault detection method of the embodiment of the present invention and device, when the main contact of main circuit breaker disconnects, measure one end voltage of a point-to-point transmission in the branch road of one end ground connection that is connected with main circuit breaker and judge whether the vacuum of the vacuum tube of main circuit breaker declines, this detection method is simple and easy to do, has realized the fault of on-line testing main circuit breaker vacuum tube.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the process flow diagram of the disclosed a kind of locomotive main circuit-breaker fault detection method of the embodiment of the present invention;
Fig. 2 is the structural representation of the disclosed a kind of main circuit breaker of railway engine failure detector of the embodiment of the present invention;
Fig. 3 is the structural representation of the disclosed a kind of main circuit breaker of railway engine failure detector of the embodiment of the present invention.
Embodiment
A kind of locomotive main circuit-breaker fault detection method disclosed by the invention and device, by measuring the voltage of point-to-point transmission on the branch road being connected with main circuit breaker, whether the vacuum that judges the vacuum tube of main circuit breaker declines, and has realized the online detection of main circuit breaker vacuum tube vacuum.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
A kind of locomotive main circuit-breaker fault detection method disclosed by the invention, described main circuit breaker is connected with auxiliary contact, it act as the main contact interlock with main circuit breaker, by the detection to its open and-shut mode, whether the main contact that detects main circuit breaker breaks down, when the main contact of judging main circuit breaker by auxiliary contact is normal, as shown in Figure 1, described method comprises step:
S101: measure one end and be connected with main circuit breaker, appoint the voltage of point-to-point transmission in the branch road of one end ground connection;
S102: when described voltage is greater than default magnitude of voltage, and described auxiliary contact is when disconnect, and points out main circuit breaker to break down.
When the main contact of main circuit breaker disconnects, if the vacuum of vacuum tube is good, one end is connected with main circuit breaker, in the branch road of one end ground connection, the voltage of point-to-point transmission should be also zero in theory, but for fear of error, also threshold value can be made as to certain value that is greater than zero, for example, according to the experience of practical application, default magnitude of voltage is made as to 500 volts.
The disclosed main circuit breaker fault detection method of the present embodiment, by the measurement to voltage, just can identify the fault of vacuum tube in main circuit breaker, simple and easy to do, has realized online detection main circuit breaker vacuum tube fault.
Further, described in the present embodiment, measuring one end is connected with described main circuit breaker in the branch road of one end ground connection and appoints the voltage of point-to-point transmission to comprise:
Measurement one end is connected with described main circuit breaker, the inferior polygonal voltage of the main-transformer of one end ground connection.
Similarly, the method also structure based on existing electric locomotive realizes, and is that main-transformer in existing electric locomotive is not used for detection system fault, and in the present embodiment, using it as detecting one of equipment of main circuit breaker vacuum tube fault.
Corresponding with above-mentioned detection method, the invention also discloses a kind of main circuit breaker of railway engine failure detector, as shown in Figure 2, comprising:
In the present embodiment, voltage measurement unit comprises with main circuit breaker described in one end and being connected, the main-transformer of one end ground connection, and measure the voltage table of the inferior polygonal voltage of described main-transformer.
Wherein, voltage table is arranged in the traction control unit abbreviation TCU of locomotive.
Wherein, the form of prompting can be voice or photoelectricity form, and the present embodiment does not limit.
Fig. 3 has provided the structural representation of the locomotive failure pick-up unit that comprises main circuit breaker 302, auxiliary contact 301, main-transformer 303 and voltage table 304.Wherein, the main contact interlock of auxiliary contact 301 and main circuit breaker 302, when the coil no power of main circuit breaker, auxiliary contact disconnects, and illustrates that the main contact of main circuit breaker is normal; Main-transformer 303 one end are connected with main circuit breaker 302, one end ground connection, when auxiliary contact disconnects, illustrate that main circuit breaker is in power failure state, whether the vacuum tube that now can detect by the reading of voltage table main circuit breaker there is the fault that vacuum declines, when the reading of voltage table is greater than default value, prompting fault.
Whether the main circuit breaker of railway engine failure detector described in the present embodiment, can there is the fault that vacuum tube vacuum declines by on-line measurement main circuit breaker, improved detection speed.
In this instructions, each embodiment adopts the mode of going forward one by one to describe, and each embodiment stresses is the difference with other embodiment, between each embodiment same or similar part mutually referring to.
Above-mentioned explanation to the disclosed embodiments, makes professional and technical personnel in the field can realize or use the present invention.To the multiple modification of these embodiment, will be apparent for those skilled in the art, General Principle as defined herein can, in the situation that not departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (7)
1. a locomotive main circuit-breaker fault detection method, described main circuit breaker is connected with auxiliary contact, it is characterized in that, comprising:
Measure one end and be connected with described main circuit breaker and appoint the voltage of point-to-point transmission in the branch road of one end ground connection, when described voltage is greater than default magnitude of voltage and the disconnection of described auxiliary contact, point out described main circuit breaker to break down.
2. method according to claim 1, is characterized in that, described measurement one end is connected with described main circuit breaker in the branch road of one end ground connection and appoints the voltage of point-to-point transmission to comprise:
Measurement one end is connected with described main circuit breaker, the inferior polygonal voltage of the main-transformer of one end ground connection.
3. method according to claim 1, is characterized in that, described default magnitude of voltage is zero.
4. method according to claim 1, is characterized in that, described default magnitude of voltage is 500 volts.
5. a main circuit breaker of railway engine failure detector, described main circuit breaker is connected with auxiliary contact, it is characterized in that, comprising:
Voltage measurement unit, is connected with described main circuit breaker for measuring one end, appoints the voltage of point-to-point transmission in the branch road of one end ground connection;
Judgement Tip element, for being greater than default magnitude of voltage when described voltage, and described auxiliary contact is when disconnect, and prompting main circuit breaker breaks down.
6. device according to claim 5, is characterized in that, described voltage measurement unit comprises:
One end is connected with described main circuit breaker, the main-transformer of one end ground connection;
Measure the voltage table of the inferior polygonal voltage of described main-transformer.
7. device according to claim 6, is characterized in that, described voltage table is arranged in the traction control unit of described locomotive.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110430603.1A CN102445657B (en) | 2011-12-20 | 2011-12-20 | Method and device for detecting faults of main circuit breaker of locomotive |
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| CN201110430603.1A CN102445657B (en) | 2011-12-20 | 2011-12-20 | Method and device for detecting faults of main circuit breaker of locomotive |
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| CN102445657A CN102445657A (en) | 2012-05-09 |
| CN102445657B true CN102445657B (en) | 2014-01-15 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102818991B (en) * | 2012-07-29 | 2015-06-17 | 中国北车集团大连机车车辆有限公司 | Fault prompting method for electric locomotive main breaker incapable of closing |
| CN105158682B (en) * | 2014-06-16 | 2018-12-04 | 中车大同电力机车有限公司 | Locomotive master is broken functional simulation test method |
| CN111077440A (en) * | 2018-10-19 | 2020-04-28 | 株洲中车时代电气股份有限公司 | Traction converter and method, device and equipment for detecting state of contactor of traction converter |
| CN109490768B (en) * | 2018-11-12 | 2021-01-26 | 北京长城华冠汽车科技股份有限公司 | Redundancy judgment method and system for contactor contact adhesion |
| CN110703138B (en) * | 2019-10-22 | 2022-03-11 | 中车青岛四方车辆研究所有限公司 | Ground fault detection method and device for traction system of motor train unit |
| CN114325377A (en) * | 2022-01-04 | 2022-04-12 | 中车株洲电力机车有限公司 | System and method for diagnosing and predicting fault of vacuum main circuit breaker and locomotive |
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| JP2002184275A (en) * | 2000-12-12 | 2002-06-28 | Meidensha Corp | Degree of vacuum monitoring method and device for vacuum circuit-breaker |
| US20080157776A1 (en) * | 2006-12-28 | 2008-07-03 | Adil Jaffer | Measurement of analog coil voltage and coil current |
| CN101672891B (en) * | 2009-09-24 | 2012-05-02 | 常熟理工学院 | Main-contact electrical-contact state on-line detector for low-voltage circuit breaker |
| CN201852919U (en) * | 2010-11-19 | 2011-06-01 | 天津市宝坻供电有限公司 | Failure monitoring device for circuit breaker |
| CN202433497U (en) * | 2011-12-20 | 2012-09-12 | 南车株洲电力机车有限公司 | Fault detection device for main circuit breaker of locomotive |
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