CN103913673A - Negative-busbar-grounded breaker tripping fault location detection method - Google Patents
Negative-busbar-grounded breaker tripping fault location detection method Download PDFInfo
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- CN103913673A CN103913673A CN201410096126.3A CN201410096126A CN103913673A CN 103913673 A CN103913673 A CN 103913673A CN 201410096126 A CN201410096126 A CN 201410096126A CN 103913673 A CN103913673 A CN 103913673A
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- rack
- resistance
- negative busbar
- negative
- fuse
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Abstract
The invention relates to a negative-busbar-grounded breaker tripping fault location detection method. The method includes the steps of arranging a circuit, detecting a low-voltage busbar protection fuse, detecting a machine cabinet and detecting a low-voltage protection fuse of a single vehicle. Through the method, maintenance personnel can accurately find fault points in less time, so the method has the advantages of being quick and efficient.
Description
Technical field
The present invention relates to a kind of negative busbar earthing breaker tripping operation abort situation detection method, be applicable to rail vehicle BGCB tripping operation maintenance.
Background technology
According to the knowledge of the applicant, vehicle low-voltage ground systematic comparison complexity, equipment is connected numerous with cable, in construction, easily there is screen layer and power supply misconnection, control the short-circuit conditions such as power supply and the misconnection of vehicle ground system in vehicle, most of time, can cause negative busbar earthing breaker (BGCB) tripping operation in vehicle low-voltage ground system, owing to not affecting the operation of vehicle, this fault frequent maintained personnel ignore; But this fault easily causes potential safety hazard if do not solved: this fault can cause the direct ground connection of vehicle positive bus-bar, very easily make to touch maintainer or the passenger contact of negative busbar.But because low-pressure system structure is loaded down with trivial details in a jumble, maintainer can only hold multimeter and detect all equipment and control circuit, BGCB tripping operation is looked into just as looking for a needle in a haystack, and but cannot find trouble spot after having dropped into a large amount of time and efforts through being everlasting.Need badly and develop easy detection method, can make maintainer can accurately find trouble spot with the less time.
Summary of the invention
Technical matters to be solved by this invention is: overcome the problem that prior art exists, a kind of negative busbar earthing breaker tripping operation abort situation detection method is provided, can make maintainer can accurately find trouble spot with the less time.
The technical scheme that the present invention solves its technical matters is as follows:
Negative busbar earthing breaker tripping operation abort situation detection method, is characterized in that, comprises the following steps:
The first step, in the headstock of rail vehicle, draw positive bus-bar and negative busbar from the subordinate inverter of external external power source; First on positive bus-bar, be connected in series low-voltage bus bar protection fuse, then connect respectively the bicycle low-voltage variation fuse of electric main track of drawing of adjacent compartment and headstock at the leading-out terminal of low-voltage bus bar protection fuse; The leading-out terminal of bicycle low-voltage variation fuse is connected with the input end of each rack respectively; In each rack, the input end of rack is connected with load one end through air-break, the load other end is connected with the output terminal of rack, the output terminal of rack is connected with negative busbar; Negative busbar is connected with the first resistance of two parallel connections, by the leading-out terminal ground connection of the first resistance; Negative busbar is connected with the second resistance of two parallel connections, by the leading-out terminal of the second resistance through negative busbar earthing breaker ground connection; The resistance of the first resistance is greater than the resistance of the second resistance; Negative busbar is connected with electric negative wire of drawing of adjacent compartment;
Second step, in the compartment of rail vehicle, connect respectively the bicycle low-voltage variation fuse in electric main track of drawing of next compartment and this compartment by drawing electric main track; The leading-out terminal of bicycle low-voltage variation fuse is connected with the input end of each rack respectively; In each rack, the input end of rack is connected with load one end through air-break, the load other end is connected with the output terminal of rack, by the output terminal of rack with draw electric negative wire and be connected; Be connected with the first resistance of two parallel connections drawing electric negative wire, by the leading-out terminal ground connection of the first resistance; Be connected with electric negative wire of drawing of next compartment drawing electric negative wire; At electric main track of drawing of this compartment with draw between electric negative wire and connect battery;
The 3rd step, in the time that negative busbar earthing breaker trips, detect low-voltage bus bar protection fuse and whether fuse, if so, fault is that positive bus-bar is to negative busbar short circuit and go to final step; If not, go to the 4th step;
The 4th step, get a wire and detect one by one each rack: wire one end is connected with the negative busbar of headstock or the electric negative wire of drawing in compartment, the wire other end and a rack enclosure are touched mutually, if air-break tripping operation in this rack, this rack is trouble spot, then detects next rack; If in this rack, air-break does not trip, next rack of direct-detection; If all racks do not find trouble spot to go to the 5th step after detecting yet, if all racks have found trouble spot to go to final step after detecting;
The 5th step, now, trouble spot is the leading-out terminal of the bicycle low-voltage variation fuse in headstock or compartment, detects the leading-out terminal of each bicycle low-voltage variation fuse with multimeter, finds out trouble spot, goes to final step;
The trouble spot that final step, maintenance detect, detects and finishes.
The present invention further perfect technical scheme is as follows:
Preferably, the first resistance is 10 times of the second resistance.
Preferably, the DC voltage that the voltage between positive bus-bar and negative busbar is 110V.
Preferably, the first resistance is 820 ohm, and the second resistance is 8.2 ohm.
The present invention can make maintainer can accurately find trouble spot, quickness and high efficiency with the less time.
Accompanying drawing explanation
Fig. 1 is the line construction schematic diagram of the embodiment of the present invention.
Embodiment
With reference to the accompanying drawings and in conjunction with the embodiments the present invention is described in further detail.But the invention is not restricted to given example.
Embodiment
First, by the circuit of arranging vehicle low-voltage ground system shown in Fig. 1, Figure 1 shows that two ends are two headstocks, centre is the rail vehicle in two compartments, between headstock, compartment, separates respectively with dotted line:
S1, in the headstock of rail vehicle, draw positive bus-bar and negative busbar from the subordinate inverter 1 of external external power source; First on positive bus-bar, be connected in series low-voltage bus bar protection fuse 2, then connect respectively the bicycle low-voltage variation fuse 3 of electric main track of drawing of adjacent compartment and headstock at the leading-out terminal of low-voltage bus bar protection fuse 2; The leading-out terminal of bicycle low-voltage variation fuse 3 is connected with the input end of each rack respectively; In each rack, the input end of rack is connected with load one end through air-break, the load other end is connected with the output terminal of rack, the output terminal of rack is connected with negative busbar; Negative busbar is connected with the first resistance R 1 of two parallel connections, by the leading-out terminal ground connection of the first resistance R 1; Negative busbar is connected with the second resistance R 2 of two parallel connections, by the leading-out terminal of the second resistance R 2 through negative busbar earthing breaker BGCB ground connection; The first resistance R 1 resistance is 820 ohm, and the second resistance R 2 resistances are 8.2 ohm; Voltage between positive bus-bar and negative busbar is the DC voltage of 110V; Negative busbar is connected with electric negative wire of drawing of adjacent compartment.
S2, in the compartment of rail vehicle, connect respectively the bicycle low-voltage variation fuse 3 in electric main track of drawing of next compartment and this compartment by drawing electric main track; The leading-out terminal of bicycle low-voltage variation fuse 3 is connected with the input end of each rack respectively; In each rack, the input end of rack is connected with load one end through air-break, the load other end is connected with the output terminal of rack, by the output terminal of rack with draw electric negative wire and be connected; Be connected with the first resistance R 1 of two parallel connections drawing electric negative wire, by the leading-out terminal ground connection of the first resistance R 1; Be connected with electric negative wire of drawing of next compartment drawing electric negative wire; At electric main track of drawing of this compartment with draw and connect battery C between electric negative wire.
Then, in the time that negative busbar earthing breaker BGCB trips,
(1) detect low-voltage bus bar protection fuse 2 and whether fuse, if so, fault be positive bus-bar to negative busbar short circuit, keep in repair this fault; If not, go to (2);
(2) get a wire and detect one by one each rack: wire one end is connected with the negative busbar of headstock or the electric negative wire of drawing in compartment, the wire other end and a rack enclosure are touched mutually, if air-break tripping operation in this rack, this rack is trouble spot, then detects next rack; If in this rack, air-break does not trip, next rack of direct-detection; If all racks do not find trouble spot to go to (3) after detecting yet, if all racks have found trouble spot, maintenance failure after detecting;
(3) after above detection, can judge the leading-out terminal of the bicycle low-voltage variation fuse 3 that trouble spot is headstock or compartment, detect the leading-out terminal of each bicycle low-voltage variation fuse 3 with multimeter, can find out trouble spot, maintenance failure.
In addition to the implementation, the present invention can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of requirement of the present invention.
Claims (4)
1. negative busbar earthing breaker tripping operation abort situation detection method, is characterized in that, comprises the following steps:
The first step, in the headstock of rail vehicle, draw positive bus-bar and negative busbar from the subordinate inverter of external external power source; First on positive bus-bar, be connected in series low-voltage bus bar protection fuse, then connect respectively the bicycle low-voltage variation fuse of electric main track of drawing of adjacent compartment and headstock at the leading-out terminal of low-voltage bus bar protection fuse; The leading-out terminal of bicycle low-voltage variation fuse is connected with the input end of each rack respectively; In each rack, the input end of rack is connected with load one end through air-break, the load other end is connected with the output terminal of rack, the output terminal of rack is connected with negative busbar; Negative busbar is connected with the first resistance of two parallel connections, by the leading-out terminal ground connection of the first resistance; Negative busbar is connected with the second resistance of two parallel connections, by the leading-out terminal of the second resistance through negative busbar earthing breaker ground connection; The resistance of the first resistance is greater than the resistance of the second resistance; Negative busbar is connected with electric negative wire of drawing of adjacent compartment;
Second step, in the compartment of rail vehicle, connect respectively the bicycle low-voltage variation fuse in electric main track of drawing of next compartment and this compartment by drawing electric main track; The leading-out terminal of bicycle low-voltage variation fuse is connected with the input end of each rack respectively; In each rack, the input end of rack is connected with load one end through air-break, the load other end is connected with the output terminal of rack, by the output terminal of rack with draw electric negative wire and be connected; Be connected with the first resistance of two parallel connections drawing electric negative wire, by the leading-out terminal ground connection of the first resistance; Be connected with electric negative wire of drawing of next compartment drawing electric negative wire; At electric main track of drawing of this compartment with draw between electric negative wire and connect battery;
The 3rd step, in the time that negative busbar earthing breaker trips, detect low-voltage bus bar protection fuse and whether fuse, if so, fault is that positive bus-bar is to negative busbar short circuit and go to final step; If not, go to the 4th step;
The 4th step, get a wire and detect one by one each rack: wire one end is connected with the negative busbar of headstock or the electric negative wire of drawing in compartment, the wire other end and a rack enclosure are touched mutually, if air-break tripping operation in this rack, this rack is trouble spot, then detects next rack; If in this rack, air-break does not trip, next rack of direct-detection; If all racks do not find trouble spot to go to the 5th step after detecting yet, if all racks have found trouble spot to go to final step after detecting;
The 5th step, now, trouble spot is the leading-out terminal of the bicycle low-voltage variation fuse in headstock or compartment, detects the leading-out terminal of each bicycle low-voltage variation fuse with multimeter, finds out trouble spot, goes to final step;
The trouble spot that final step, maintenance detect, detects and finishes.
2. negative busbar earthing breaker tripping operation abort situation detection method according to claim 1, is characterized in that, the first resistance is 10 times of the second resistance.
3. negative busbar earthing breaker tripping operation abort situation detection method according to claim 1, is characterized in that the DC voltage that the voltage between positive bus-bar and negative busbar is 110V.
4. negative busbar earthing breaker tripping operation abort situation detection method according to claim 1, is characterized in that, the first resistance is 820 ohm, and the second resistance is 8.2 ohm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410096126.3A CN103913673B (en) | 2014-03-14 | Negative busbar earthing breaker tripping fault method for detecting position |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410096126.3A CN103913673B (en) | 2014-03-14 | Negative busbar earthing breaker tripping fault method for detecting position |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103913673A true CN103913673A (en) | 2014-07-09 |
| CN103913673B CN103913673B (en) | 2016-11-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110187222A (en) * | 2019-05-28 | 2019-08-30 | 科华恒盛股份有限公司 | Bus wiring faults detection circuit and failure judgment method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20080062971A (en) * | 2006-12-30 | 2008-07-03 | 한국전기연구원 | Fault location detection device for underground power cable using low voltage and current sensors |
| CN102981118A (en) * | 2011-09-06 | 2013-03-20 | 首瑞（北京）投资管理集团有限公司 | Breaker state monitoring system |
| CN103378585A (en) * | 2012-04-17 | 2013-10-30 | 西门子公司 | Fault protection system for a power system of dynamically positioned vessel |
| CN203326577U (en) * | 2013-06-27 | 2013-12-04 | 浙江昱能光伏科技集成有限公司 | Inverter's fault current detection and protection circuit |
| CN103457261A (en) * | 2013-08-14 | 2013-12-18 | 南车株洲电力机车研究所有限公司 | Power quality integrated management device of electrified railway traction supply network |
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20080062971A (en) * | 2006-12-30 | 2008-07-03 | 한국전기연구원 | Fault location detection device for underground power cable using low voltage and current sensors |
| CN102981118A (en) * | 2011-09-06 | 2013-03-20 | 首瑞（北京）投资管理集团有限公司 | Breaker state monitoring system |
| CN103378585A (en) * | 2012-04-17 | 2013-10-30 | 西门子公司 | Fault protection system for a power system of dynamically positioned vessel |
| CN203326577U (en) * | 2013-06-27 | 2013-12-04 | 浙江昱能光伏科技集成有限公司 | Inverter's fault current detection and protection circuit |
| CN103457261A (en) * | 2013-08-14 | 2013-12-18 | 南车株洲电力机车研究所有限公司 | Power quality integrated management device of electrified railway traction supply network |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110187222A (en) * | 2019-05-28 | 2019-08-30 | 科华恒盛股份有限公司 | Bus wiring faults detection circuit and failure judgment method |
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Address after: 210031 Nanjing province high tech Industrial Development Zone, Taishan Park, North Pearl Road, No. 68 Applicant after: CRRC NANJING PUZHEN CO., LTD. Address before: 210031 Nanjing province high tech Industrial Development Zone, Taishan Park, North Pearl Road, No. 68 Applicant before: CSR NANJING PUZHEN Vehicles Co., Ltd. |
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