CN101794986A - Line test device and test method of direct-current traction power supply switch cabinet - Google Patents
Line test device and test method of direct-current traction power supply switch cabinet Download PDFInfo
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- CN101794986A CN101794986A CN201010122324A CN201010122324A CN101794986A CN 101794986 A CN101794986 A CN 101794986A CN 201010122324 A CN201010122324 A CN 201010122324A CN 201010122324 A CN201010122324 A CN 201010122324A CN 101794986 A CN101794986 A CN 101794986A
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Abstract
The invention belongs to a detection technique of electric equipment, which relates to the detection of a direct-current switch cabinet supplying power to an urban rail traffic direct-current traction engine, in particular to a line test device and a test method of a direct-current traction power supply switch cabinet. The line test device and the test method are characterized in that a detection line is respectively led out from the main bus-bar side and the feeder line side of a direct-current breaker in the line, wherein the detection line which is led out from the feeder line side is connected to the cathode of a bus bar by an adjustable resistor A651, and the detection line which is led out from the main bus-bar side is connected to the cathode of the bus bar by an adjustable resistor R653, a contactor K and the adjustable resistor A651 sequentially; and a voltage amplification signal is output to a protection device through signals which are led out from both ends of the adjustable resistor A651 by a measuring amplifier. When a direct-current traction power supply system carries out the normal breaker switching-on operation, the invention can test the line for many times, closes the contactor K when required for carrying out further judgment, enhances the accuracy of a test result, ensures the reliable operation of the direct-current traction power supply switch cabinet and has convenient and accurate test process.
Description
Technical field
The invention belongs to detection technique of electric equipment, relate to the detection to the direct-current switch cabinet of urban track traffic DC traction locomotive power supply, specifically is a kind of direct-current traction power supply switch cabinet LTU line test unit and method of testing.
Background technology
In the electrical system of urban track traffic, the big electric current that produces when line fault, vehicle start and stop etc. are the key factor that threatens safe operation all the time.Therefore, prevent that direct current quick breaker from directly closing a floodgate is an urgent demand of support equipment safe operation, can not satisfy this instructions for use and still there is desirable equipment in the prior art on fault loop.
Summary of the invention
Technical problem to be solved by this invention is, providing a kind of can monitor in real time and judge the line status of direct-current traction power supply switch cabinet, simultaneously convenient, the LTU line test unit and the method for testing of direct-current traction power supply switch cabinet accurately of testing process.
Direct-current traction power supply switch cabinet LTU line test unit of the present invention includes dc circuit breaker that is connected between direct current supply bus positive pole and the bus negative pole and the direct-current traction power supply circuit that is used for directly being connected with rail locomotive, it is characterized in that, draw detection line respectively from main bus bar side and the feeder line side of dc circuit breaker D, wherein, receive the bus negative pole from the detection line that the feeder line side is drawn through adjustable resistance A651, receive the bus negative pole through adjustable resistance R653, contactor K and adjustable resistance A651 successively from the detection line that the main bus bar side is drawn; From the voltage signal input of a measuring amplifier U661 of the double-end holding wire access of adjustable resistance A651, the amplifying signal output of measuring amplifier inserts a protective device that can calculate and judge and can send to dc circuit breaker control command to the voltage sampling signal after amplifying.
Direct-current traction power supply switch cabinet line testing process of the present invention is based on above-mentioned testing apparatus, and it may further comprise the steps successively:
A. before scene that said apparatus is put into operation, locomotive traction supply line does not set up the resistance of adjustable resistance A651 under the condition of conducting, its method is, between the feeder line side of dc circuit breaker and bus negative pole, apply maximum working voltage, adjust adjustable resistance A651 resistance until the voltage signal values of measuring amplifier output in the permissible value scope that protective device is set;
B. before scene that said apparatus is put into operation, locomotive traction supply line does not set up the resistance of adjustable resistance R653 under the condition of conducting, its method is, the resistance that between dc circuit breaker feeder line side and bus negative pole, connects the actual locomotive traction of a simulation supply line resistance, between the main bus bar side of dc circuit breaker and bus negative pole, apply maximum working voltage, closed contactor K, adjust adjustable resistance R653 resistance, until the voltage signal values of measuring amplifier output in the permissible value scope that protective device is set;
C. on-the-spot in the traction locomotive operation, under the condition of locomotive traction supply line conducting, according to the actual resistance of locomotive traction supply line operate as normal, protective device obtains the measuring amplifier output voltage signal of a reality, by protective device it is carried out record;
D. continue to monitor by the voltage signal of protective device, and whether decision carries out the dc circuit breaker closing operation measuring amplifier output.
The present invention can be when DC traction power-supply system carries out normal breaker switching-on operation, circuit is repeatedly tested, and closed when needed contactor K further judges, improved precision of test result, guaranteed the reliability service of direct-current traction power supply switch cabinet, its test process is convenient, accurate.
Description of drawings
Fig. 1 is the schematic circuit of apparatus of the present invention.
Embodiment
As shown in the figure, the inventive system comprises dc circuit breaker that is connected between direct current supply bus positive pole and the bus negative pole and the direct-current traction power supply circuit that is used for directly being connected with rail locomotive.Draw detection line respectively from main bus bar side and the feeder line side of dc circuit breaker D, wherein, receive the bus negative pole from the detection line that circuit breaker feeder line side is drawn through adjustable resistance A651, receive the bus negative pole through adjustable resistance R653, contactor K and adjustable resistance A651 successively from the detection line that circuit breaker main bus bar side is drawn; After of the amplification of the double-end voltage signal of adjustable resistance A651, output to protective device 1 through measuring amplifier U661.
Said apparatus may further comprise the steps in the reality test successively:
A. before scene that said apparatus is put into operation, locomotive traction supply line does not set up the resistance of adjustable resistance A651 under the condition of conducting, its method is, between the feeder line side of dc circuit breaker and bus negative pole, apply maximum working voltage, adjust adjustable resistance A651 resistance until the voltage signal values of measuring amplifier output in the permissible value scope that protective device is set;
B. before scene that said apparatus is put into operation, locomotive traction supply line does not set up the resistance of adjustable resistance R653 under the condition of conducting, its method is, the resistance that between dc circuit breaker feeder line side and bus negative pole, connects the actual locomotive traction of a simulation supply line resistance, between the main bus bar side of dc circuit breaker and bus negative pole, apply maximum working voltage, closed contactor K, adjust adjustable resistance R653 resistance, until the voltage signal values of measuring amplifier output in the permissible value scope that protective device is set;
C. on-the-spot in the traction locomotive operation, under the condition of locomotive traction supply line conducting, according to the actual resistance of locomotive traction supply line operate as normal, protective device obtains the measuring amplifier output voltage signal of a reality, by protective device it is carried out record;
D. continue to monitor by the voltage signal of protective device measuring amplifier output; if line failure; bigger variation can take place in the resistance of locomotive traction supply line; correspondingly; bigger variation also can take place in the voltage signal of measuring amplifier output; protective device calculates and failure judgement character according to the changing value size of this voltage signal, and whether decision can carry out the dc circuit breaker closing operation.
Claims (2)
1. direct-current traction power supply switch cabinet LTU line test unit, include dc circuit breaker that is connected between direct current supply bus positive pole and the bus negative pole and the direct-current traction power supply circuit that is used for directly being connected with rail locomotive, it is characterized in that: draw detection line respectively from the main bus bar side and the feeder line side of dc circuit breaker (D), wherein, the detection line of drawing from the feeder line side is received the bus negative pole through adjustable resistance (A651), and the detection line of drawing from the main bus bar side passes through adjustable resistance (R653), contactor (K) and adjustable resistance (A651) successively and receives the bus negative pole; From the voltage signal input of the double-end holding wire measuring amplifier of access of adjustable resistance (A651) (U661), the output of the amplifying signal of measuring amplifier inserts a protective device (B) that can calculate and judge and can send to dc circuit breaker control command to the voltage sampling signal after amplifying.
2. direct-current traction power supply switch cabinet line testing process based on the described device of claim 1, it is characterized in that: it may further comprise the steps successively,
A. before scene that said apparatus is put into operation, locomotive traction supply line does not set up the resistance of adjustable resistance (A651) under the condition of conducting, its method is, between the feeder line side of dc circuit breaker and bus negative pole, apply maximum working voltage, adjust adjustable resistance (A651) resistance until the voltage signal values of measuring amplifier output in the permissible value scope that protective device is set;
B. before scene that said apparatus is put into operation, locomotive traction supply line does not set up the resistance of adjustable resistance (R653) under the condition of conducting, its method is, the resistance that between dc circuit breaker feeder line side and bus negative pole, connects the actual locomotive traction of a simulation supply line resistance, between the main bus bar side of dc circuit breaker and bus negative pole, apply maximum working voltage, closed contactor (K), adjust adjustable resistance (R653) resistance, until the voltage signal values of measuring amplifier output in the permissible value scope that protective device is set;
C. on-the-spot in the traction locomotive operation, under the condition of locomotive traction supply line conducting, according to the actual resistance of locomotive traction supply line operate as normal, protective device (B) obtains the measuring amplifier output voltage signal of a reality, by protective device it is carried out record;
D. continue to monitor by the voltage signal of protective device (B), and whether decision carries out the dc circuit breaker closing operation measuring amplifier output.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010122324A CN101794986A (en) | 2010-03-12 | 2010-03-12 | Line test device and test method of direct-current traction power supply switch cabinet |
| CN201020128814.0U CN201656454U (en) | 2010-03-12 | 2010-03-12 | Direct-current traction power supply switch cabinet circuit testing device |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010122324A CN101794986A (en) | 2010-03-12 | 2010-03-12 | Line test device and test method of direct-current traction power supply switch cabinet |
| CN201020128814.0U CN201656454U (en) | 2010-03-12 | 2010-03-12 | Direct-current traction power supply switch cabinet circuit testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101794986A true CN101794986A (en) | 2010-08-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010122324A Pending CN101794986A (en) | 2010-03-12 | 2010-03-12 | Line test device and test method of direct-current traction power supply switch cabinet |
| CN201020128814.0U Expired - Fee Related CN201656454U (en) | 2010-03-12 | 2010-03-12 | Direct-current traction power supply switch cabinet circuit testing device |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020128814.0U Expired - Fee Related CN201656454U (en) | 2010-03-12 | 2010-03-12 | Direct-current traction power supply switch cabinet circuit testing device |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102496913A (en) * | 2011-12-14 | 2012-06-13 | 镇江大全赛雪龙牵引电气有限公司 | Circuit test system and circuit test and protection method for direct-current traction power supply feeder unit |
| CN103245882A (en) * | 2013-04-27 | 2013-08-14 | 国家电网公司 | Integrated power failure indication and condition monitoring device |
| CN104316823A (en) * | 2014-11-11 | 2015-01-28 | 国家电网公司 | Method and device for detecting defects |
| CN105004965A (en) * | 2014-04-23 | 2015-10-28 | 国家电网公司 | Method and device for detecting direct current power transmission line fault |
| CN109142873A (en) * | 2018-08-28 | 2019-01-04 | 中铁十二局集团有限公司 | A kind of orbit traffic direct current power supply system full loop D.C. resistance test method |
| WO2019084947A1 (en) * | 2017-11-06 | 2019-05-09 | 华东泓泽机电设备（昆山）有限公司 | Direct-current switch cabinet, and monitoring system thereof and monitoring method therefor |
| CN110380399A (en) * | 2019-08-02 | 2019-10-25 | 镇江大全赛雪龙牵引电气有限公司 | A kind of DC traction power-supply system for eliminating residual voltage |
| CN111210702A (en) * | 2020-03-03 | 2020-05-29 | 广州株电交通设备有限公司 | Subway traction power transformation system training platform |
| CN111579916A (en) * | 2019-09-23 | 2020-08-25 | 浙江得玛斯科技有限公司 | Direct current feeder cabinet line testing method |
| WO2021088475A1 (en) * | 2019-11-08 | 2021-05-14 | 中车长春轨道客车股份有限公司 | Traction control simulation system and traction control method for rail vehicle |
| CN114498309A (en) * | 2020-10-24 | 2022-05-13 | 天津首瑞智能电气有限公司 | Electric switch and power distribution monitoring unit |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101794986A (en) * | 2010-03-12 | 2010-08-04 | 镇江大全赛雪龙牵引电气有限公司 | Line test device and test method of direct-current traction power supply switch cabinet |
| CN102565706B (en) * | 2012-01-19 | 2014-04-02 | 天津清源电动车辆有限责任公司 | DC control system for electric automobile motor testing |
| CN105676048B (en) * | 2016-01-18 | 2018-11-02 | 国网山东省电力公司青岛供电公司 | A kind of switch cabinet of converting station switch secondary circuit detection device |
| CN109515197B (en) * | 2018-11-07 | 2020-11-13 | 中车株洲电力机车有限公司 | Rail transit vehicle and high-speed circuit breaker on-off control method thereof |
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| CN101609124A (en) * | 2009-07-03 | 2009-12-23 | 株洲南车时代电气股份有限公司 | A kind of ground detecting method of power supply system of train |
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2010
- 2010-03-12 CN CN201010122324A patent/CN101794986A/en active Pending
- 2010-03-12 CN CN201020128814.0U patent/CN201656454U/en not_active Expired - Fee Related
Patent Citations (2)
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| CN101609124A (en) * | 2009-07-03 | 2009-12-23 | 株洲南车时代电气股份有限公司 | A kind of ground detecting method of power supply system of train |
| CN201656454U (en) * | 2010-03-12 | 2010-11-24 | 镇江大全赛雪龙牵引电气有限公司 | Direct-current traction power supply switch cabinet circuit testing device |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102496913A (en) * | 2011-12-14 | 2012-06-13 | 镇江大全赛雪龙牵引电气有限公司 | Circuit test system and circuit test and protection method for direct-current traction power supply feeder unit |
| CN102496913B (en) * | 2011-12-14 | 2015-05-27 | 镇江大全赛雪龙牵引电气有限公司 | Circuit test system and circuit test and protection method for direct-current traction power supply feeder unit |
| CN103245882A (en) * | 2013-04-27 | 2013-08-14 | 国家电网公司 | Integrated power failure indication and condition monitoring device |
| CN103245882B (en) * | 2013-04-27 | 2015-11-11 | 国家电网公司 | The power failure instruction of integration and state monitoring apparatus |
| CN105004965A (en) * | 2014-04-23 | 2015-10-28 | 国家电网公司 | Method and device for detecting direct current power transmission line fault |
| CN104316823A (en) * | 2014-11-11 | 2015-01-28 | 国家电网公司 | Method and device for detecting defects |
| CN104316823B (en) * | 2014-11-11 | 2017-05-31 | 国家电网公司 | A kind of method and device of defects detection |
| WO2019084947A1 (en) * | 2017-11-06 | 2019-05-09 | 华东泓泽机电设备（昆山）有限公司 | Direct-current switch cabinet, and monitoring system thereof and monitoring method therefor |
| CN109142873A (en) * | 2018-08-28 | 2019-01-04 | 中铁十二局集团有限公司 | A kind of orbit traffic direct current power supply system full loop D.C. resistance test method |
| CN109142873B (en) * | 2018-08-28 | 2020-08-28 | 中铁十二局集团有限公司 | Full-loop direct current resistance testing method for rail transit direct current power supply system |
| CN110380399A (en) * | 2019-08-02 | 2019-10-25 | 镇江大全赛雪龙牵引电气有限公司 | A kind of DC traction power-supply system for eliminating residual voltage |
| CN110380399B (en) * | 2019-08-02 | 2024-05-07 | 镇江大全赛雪龙牵引电气有限公司 | DC traction power supply system for eliminating residual voltage |
| CN111579916A (en) * | 2019-09-23 | 2020-08-25 | 浙江得玛斯科技有限公司 | Direct current feeder cabinet line testing method |
| WO2021088475A1 (en) * | 2019-11-08 | 2021-05-14 | 中车长春轨道客车股份有限公司 | Traction control simulation system and traction control method for rail vehicle |
| CN111210702A (en) * | 2020-03-03 | 2020-05-29 | 广州株电交通设备有限公司 | Subway traction power transformation system training platform |
| CN111210702B (en) * | 2020-03-03 | 2022-06-28 | 广州株电交通设备有限公司 | Subway traction power transformation system training platform |
| CN114498309A (en) * | 2020-10-24 | 2022-05-13 | 天津首瑞智能电气有限公司 | Electric switch and power distribution monitoring unit |
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| CN201656454U (en) | 2010-11-24 |
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Application publication date: 20100804 |