CN201690210U - Direct current traction power supply negative electrode unit frame leakage testing and protecting device - Google Patents
Direct current traction power supply negative electrode unit frame leakage testing and protecting device Download PDFInfo
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- CN201690210U CN201690210U CN2010201482460U CN201020148246U CN201690210U CN 201690210 U CN201690210 U CN 201690210U CN 2010201482460 U CN2010201482460 U CN 2010201482460U CN 201020148246 U CN201020148246 U CN 201020148246U CN 201690210 U CN201690210 U CN 201690210U
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- direct current
- negative electrode
- power supply
- traction power
- voltage
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Abstract
The utility model relates to a direct current traction power supply negative electrode unit frame leakage testing and protecting device in an urban rail traffic device power supply system, which comprises a steel rail and a direct current device shell, wherein the steel rail is connected with a system negative electrode, and the direct current device shell insulates with a system positive electrode. The direct current traction power supply negative electrode unit frame leakage testing and protecting device further comprises a current relay and two voltage relays, wherein one end of the current relay is connected with the direct current device shell, the other end is connected with the ground, one ends of the two voltage relays are connected with the direct current device shell after the two voltage relays are connected in parallel, and the other ends are connected with the system negative electrode. The two voltage relays which are connected in parallel are connected with the system negative electrode through a high voltage fuse. The direct current traction power supply negative electrode unit frame leakage testing and protecting device can increase the reaction rate and the accuracy of leakage protection of a frame through collaborative monitoring of current elements and voltage elements, and greatly increases the protection reliability.
Description
Technical field
The utility model relates to direct-current traction power supply negative pole unit framework leak-testing and the protective device in a kind of urban track traffic power devices system.
Background technology
In the DC traction power-supply system of urban rail transit vehicles, the framework leak protection of negative pole cabinet is mainly used to protection equipment and personal safety, and there are defectives such as reaction speed is slow, poor reliability mostly in existing protective device.
Summary of the invention
Technical problem to be solved in the utility model is, provides that a kind of reaction speed is fast, high direct-current traction power supply negative pole unit framework leak-testing and the protective device of protection reliable in action.
Direct-current traction power supply negative pole unit framework leak-testing of the present utility model and protective device include the rail that is connected with the system negative pole and with the DC equipment shell of the anodal insulation of system, also include a current relay and two voltage relays; Current relay one end connects DC equipment shell, other end ground connection; An end connects DC equipment shell, other end connected system negative pole after two voltage relay parallel connections.Two voltage relays of described parallel connection are connected with the system negative pole through high-tension fuse.
The utility model can improve the reaction speed and the accuracy of framework leak protection by current element and voltage component synergic monitoring, and the reliability of protection improves greatly.
Description of drawings
Fig. 1 is the schematic diagram of the utility model embodiment.
Embodiment
As shown in the figure, this device include the rail A that is connected with the system negative pole and with the DC equipment shell B of the anodal insulation of system, also include a current relay K4H1 and two voltage relay K4E1, K4F1; Current relay K4H1 one end connects DC equipment shell, other end ground connection; An end connects the DC equipment shell after two voltage relay parallel connections, and the other end is through high-tension fuse F4D1 connected system negative pole.S26D1 among the figure is a universal seclector, is used for the switching of Selection Framework voltage alarm element; S26D2 is a universal seclector also, is used for the switching of Selection Framework shunt tripping element.
Select at S26D1, S26D2 under the situation of " inputs ", K4E1, K4F1 link to each other with the system cathode bus bar by high-tension fuse F4D1, another termination frame protection, be respectively applied for corresponding two-stage voltage protection.K4H1 one termination frame protection ground, other end welding system ground, the framework electric current that is used to move leaks, K4H1 need not additional power supply, can guarantee system in service safe, reliably, move the raising security of system fast.
In the said apparatus, current element one head joint equipment shell, other end ground connection, main checkout equipment shell leakage current over the ground.Under normal operation, current detection circuit does not have electric current to pass through.When the positive pole of any one DC equipment during to shell generation insulation damages, earth current flows into earth mat by current element, gets back to rail (negative pole) by the bleeder resistance between rail and the ground (or current drainage cabinet) again.When earth current reaches setting value, the current element action, connection is jumped the our station circuit breaker, and connection is jumped adjacent station respective circuit breakers as required.
The uncertainty of the via resistance of flowing through owing to electric current (mainly being rail insulation against ground resistance) along with the performance of insulating material changes, the requirement that may cause frame protection current element detected value not reach setting value, the frame protection current element is failure to actuate.For be used the voltage component one head joint equipment shell in the device, another termination rail, the leakage voltage of detection negative pole and device housings with voltage component.Because small resistor can ignore, can think the direct ground connection of device housings, the detected voltage of voltage component is equivalent to the voltage between rail and the ground.When the positive pole of any one DC equipment during to shell generation insulation damages, earth potential raises, and voltage component can detect a voltage between rail and ground.When this voltage during greater than the voltage component setting value, voltage component should move in the time of adjusting, and sends and reports to the police or the direct tripping operation respective circuit breakers cabinet of jumping in parallel.
Claims (2)
1. direct-current traction power supply negative pole unit framework leak-testing and protective device, include the rail that is connected with the system negative pole and with the DC equipment shell of the anodal insulation of system, it is characterized in that: further comprising has a current relay and two voltage relays; Current relay one end connects DC equipment shell, other end ground connection; An end connects DC equipment shell, other end connected system negative pole after two voltage relay parallel connections.
2. direct-current traction power supply negative pole unit framework leak-testing according to claim 1 and protective device is characterized in that: two voltage relays of described parallel connection are connected with the system negative pole through high-tension fuse.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201482460U CN201690210U (en) | 2010-04-02 | 2010-04-02 | Direct current traction power supply negative electrode unit frame leakage testing and protecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201482460U CN201690210U (en) | 2010-04-02 | 2010-04-02 | Direct current traction power supply negative electrode unit frame leakage testing and protecting device |
Publications (1)
| Publication Number | Publication Date |
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| CN201690210U true CN201690210U (en) | 2010-12-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010201482460U Expired - Fee Related CN201690210U (en) | 2010-04-02 | 2010-04-02 | Direct current traction power supply negative electrode unit frame leakage testing and protecting device |
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| CN (1) | CN201690210U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103579932A (en) * | 2013-11-12 | 2014-02-12 | 长城电器集团乐山宁格朗电气有限责任公司 | Small-scale intelligent energy-saving box-type substation |
| CN104034972A (en) * | 2013-03-08 | 2014-09-10 | 卡特彼勒公司 | Fault detection system with leakage current detection |
| CN104880640A (en) * | 2015-06-01 | 2015-09-02 | 镇江大全赛雪龙牵引电气有限公司 | DC traction power supply system frame electric leakage monitoring apparatus |
| CN105799551A (en) * | 2016-03-10 | 2016-07-27 | 南京金城轨道交通设备有限公司 | Power supply device for APM rapid transit system |
| CN110412398A (en) * | 2019-08-27 | 2019-11-05 | 镇江大全赛雪龙牵引电气有限公司 | A kind of Novel DC traction power supply negative pole unit frame leak-testing and protective device |
| CN110780120A (en) * | 2019-10-17 | 2020-02-11 | 西南交通大学 | Urban rail transit direct current equipment insulation performance on-line monitoring system and control method |
| CN111913126A (en) * | 2020-06-02 | 2020-11-10 | 神华包神铁路集团有限责任公司 | Insulation pad arcing fault detection method |
-
2010
- 2010-04-02 CN CN2010201482460U patent/CN201690210U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104034972A (en) * | 2013-03-08 | 2014-09-10 | 卡特彼勒公司 | Fault detection system with leakage current detection |
| CN104034972B (en) * | 2013-03-08 | 2018-10-19 | 卡特彼勒公司 | Fault detection system with leakage current detection |
| CN103579932A (en) * | 2013-11-12 | 2014-02-12 | 长城电器集团乐山宁格朗电气有限责任公司 | Small-scale intelligent energy-saving box-type substation |
| CN103579932B (en) * | 2013-11-12 | 2015-11-18 | 宁格朗电气股份有限公司 | Small intelligent energy-saving box-type transformer substation |
| CN104880640A (en) * | 2015-06-01 | 2015-09-02 | 镇江大全赛雪龙牵引电气有限公司 | DC traction power supply system frame electric leakage monitoring apparatus |
| CN105799551A (en) * | 2016-03-10 | 2016-07-27 | 南京金城轨道交通设备有限公司 | Power supply device for APM rapid transit system |
| CN105799551B (en) * | 2016-03-10 | 2018-07-03 | 中车浦镇庞巴迪运输系统有限公司 | APM rapid transit system (RTS)s are used for electric installation |
| CN110412398A (en) * | 2019-08-27 | 2019-11-05 | 镇江大全赛雪龙牵引电气有限公司 | A kind of Novel DC traction power supply negative pole unit frame leak-testing and protective device |
| CN110780120A (en) * | 2019-10-17 | 2020-02-11 | 西南交通大学 | Urban rail transit direct current equipment insulation performance on-line monitoring system and control method |
| CN111913126A (en) * | 2020-06-02 | 2020-11-10 | 神华包神铁路集团有限责任公司 | Insulation pad arcing fault detection method |
| CN111913126B (en) * | 2020-06-02 | 2023-03-21 | 神华包神铁路集团有限责任公司 | Insulation pad arcing fault detection method |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101229 Termination date: 20180402 |
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| CF01 | Termination of patent right due to non-payment of annual fee |