CN203895965U - Line-side circuit capable of protecting electric locomotive high voltage transformer - Google Patents
Line-side circuit capable of protecting electric locomotive high voltage transformer Download PDFInfo
- Publication number
- CN203895965U CN203895965U CN201420018614.8U CN201420018614U CN203895965U CN 203895965 U CN203895965 U CN 203895965U CN 201420018614 U CN201420018614 U CN 201420018614U CN 203895965 U CN203895965 U CN 203895965U
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- China
- Prior art keywords
- high voltage
- voltage transformer
- transformer
- circuit
- electric locomotive
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 230000003137 locomotive effect Effects 0.000 title claims abstract description 27
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 8
- 229910052802 copper Inorganic materials 0.000 claims description 8
- 239000010949 copper Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 2
- 238000009413 insulation Methods 0.000 abstract description 4
- 238000004804 winding Methods 0.000 abstract description 4
- 239000004020 conductor Substances 0.000 abstract description 3
- 238000005422 blasting Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Landscapes
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The utility model discloses a line-side circuit, which is capable of protecting an electric locomotive high voltage transformer, and is connected between a power supply network and a load. The line-side circuit comprises a pantograph, a high voltage transformer, and a high voltage transformer fault protection device connected between the pantograph and the high voltage transformer. The line-side circuit is advantageous in that when the grounding fault of the primary side high voltage side of the high voltage transformer caused by the ground insulation or the inside short circuit of the secondary winding occurs, the high voltage transformer fault protection device can be used as the conductor of the high voltage side and the ground, and the connection between the high voltage side and the high voltage transformer can be broken by the burnout of the internal connecting wire because of the large current, and therefore the burnout of the power supply network, the trip-out of the power supply administration, and the high voltage grounding blasting accident of the locomotive can be prevented, and the power supply network and the locomotive safety can be effectively guaranteed.
Description
Technical field
The utility model relates to railway locomotive technical field, is specifically related to a kind of circuit on side of overhead contact line of protecting high voltage transformer of electric locomotive.
Background technology
Existing electric locomotive circuit on side of overhead contact line principle as shown in Figure 1, loop, right side pantograph 2 one termination power supply networks 1, another termination main circuit breaker 10, another termination traction transformer 3 of main circuit breaker, by traction transformer, offer locomotive operation required voltage, earthed switch 9 is in parallel with main circuit breaker 10, and lightning arrester 11 is in parallel with traction transformer 3; Loop, left side mesohigh voltage transformer 4 access main circuit breaker 10 in parallel and traction transformer 3 two ends, offer detecting instrument equipment voltage used after transformation.
The high voltage potential transformer of electric locomotive is mainly divided into two kinds, and a kind of is dry type, and a kind of is oil immersed type, and its effect is for monitoring electric locomotive driving process contact line voltage.In high voltage potential transformer utilization process, when external environment condition generation acute variation or quality own go wrong, just there will be the faults such as high voltage potential transformer one secondary winding insulation against ground, internal short-circuit, when serious, there will be high voltage potential transformer to burst phenomenon; If locomotive is rising bow, high voltage potential transformer fault may directly cause power supply network ground connection, and power supply station trips, and even causes the scaling loss of power supply network, affects railway locomotive transportation.At present; solution for high voltage potential transformer fault is mainly improve and optimize for instrument transformer itself; by reducing failure rate, reduce the generation of above-mentioned phenomenon; after not relating to temporarily high voltage potential transformer and breaking down; how other facilities are protected, avoided the generation of the problems referred to above.
Utility model content
For overcoming the problems referred to above, it is a kind of simple in structure that the utility model provides, and can effectively prevent the electric locomotive circuit on side of overhead contact line of the railway related system series of problems that high voltage potential transformer fault causes.
The technical scheme that the utility model is dealt with problems is: a kind of circuit on side of overhead contact line of protecting high voltage transformer of electric locomotive; be connected between power supply network and load; this circuit comprises pantograph, high voltage potential transformer; and the high voltage potential transformer failure protecting device accessing between pantograph and high voltage potential transformer, described high voltage potential transformer failure protecting device comprises the insulating case of connector lug, connecting line and coated connecting line.
In technique scheme, the connector lug of described failure protecting device is preferably copper sheet, to avoid battery effect; Copper sheet top layer is zinc-plated, prevents that top layer is oxidized.This connector lug is arranged on connecting line two ends.
In technique scheme, the connecting line of described failure protecting device is preferably TJR3-2 type annealed copper strand wire.
In technique scheme, the insulating case of described failure protecting device preferably adopts can fire-retardant and resistant to elevated temperatures fluorosioloxane rubber material, protection connecting line.
Remarkable result of the present utility model is: when locomotive rising bow, there is a secondary winding insulation against ground in high voltage potential transformer, when internal short-circuits etc. cause high-pressure side, former limit earth fault, high voltage potential transformer failure protecting device itself is as the conductor of high-pressure side and the earth, can flow super-high-current, high voltage potential transformer failure protecting device interconnector is because large electric current can blow to disconnect being connected of high-pressure side and high voltage potential transformer, prevent the scaling loss of power supply network, the tripping operation of power supply station, locomotive occurs that high-voltage earthing blows out accident, can effectively protect power supply network and motorcycle safety.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, be described further.
Fig. 1 is the electric locomotive circuit on side of overhead contact line principle schematic of prior art.
Fig. 2 is the circuit on side of overhead contact line principle schematic of protecting high voltage transformer of electric locomotive of the present utility model.
Fig. 3 is electric locomotive circuit on side of overhead contact line schematic diagram of the present utility model after high voltage potential transformer breaks down.
Fig. 4 is the utility model high voltage potential transformer failure protecting device structural representation.
Wherein, 1-power supply network, 2-pantograph, 3-traction transformer, 4-high voltage potential transformer, 5-high voltage potential transformer failure protecting device, 6-connector lug, 7-insulating case, 8-annealed copper strand wire, 9-earthed switch, 10-main circuit breaker, 11-lightning arrester.
Embodiment
Referring to Fig. 1～4; a kind of circuit on side of overhead contact line of protecting high voltage transformer of electric locomotive; be connected between power supply network 1 and load; this circuit comprises pantograph 2, high voltage potential transformer 4; and the high voltage potential transformer failure protecting device 5 of access between pantograph 2 and high voltage potential transformer 4; described high voltage potential transformer failure protecting device comprises the fluorosioloxane rubber insulating case 7 of the zinc-plated copper sheet connector lug 6 in top layer, TJR3-2 type annealed copper strand wire 8 and coated connecting line, described high voltage potential transformer 4 another termination loads.
When high voltage potential transformer 4 occurs that a secondary winding insulation against ground, internal short-circuit etc. cause high-pressure side, former limit earth fault; the conductor as high-pressure side and the earth of high voltage potential transformer failure protecting device 5 own; can flow super-high-current; high voltage potential transformer failure protecting device interconnector blows; high-pressure side and high voltage potential transformer are disconnected; prevent the scaling loss of power supply network, the tripping operation of power supply station, locomotive occur that high-voltage earthing blows out accident, effectively protect power supply network and motorcycle safety.
Claims (5)
1. the circuit on side of overhead contact line that can protect high voltage transformer of electric locomotive; be connected between power supply network (1) and load; this circuit comprises pantograph (2), high voltage potential transformer (4), it is characterized in that: the high voltage potential transformer failure protecting device (5) that also comprises access between pantograph (2) and high voltage potential transformer (4).
2. the circuit on side of overhead contact line of protecting high voltage transformer of electric locomotive according to claim 1, is characterized in that: described high voltage potential transformer failure protecting device (5) comprises the insulating case (7) of connector lug (6), connecting line and coated connecting line.
3. the circuit on side of overhead contact line of protecting high voltage transformer of electric locomotive according to claim 2, is characterized in that: described connector lug (6) is copper sheet, and top layer is zinc-plated, is arranged on the two ends of connecting line.
4. the circuit on side of overhead contact line of protecting high voltage transformer of electric locomotive according to claim 2, is characterized in that: described connecting line is TJR3-2 type annealed copper strand wire.
5. the circuit on side of overhead contact line of protecting high voltage transformer of electric locomotive according to claim 2, is characterized in that: described insulating case (7) adopts fluorosioloxane rubber material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420018614.8U CN203895965U (en) | 2014-01-13 | 2014-01-13 | Line-side circuit capable of protecting electric locomotive high voltage transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420018614.8U CN203895965U (en) | 2014-01-13 | 2014-01-13 | Line-side circuit capable of protecting electric locomotive high voltage transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203895965U true CN203895965U (en) | 2014-10-22 |
Family
ID=51722321
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420018614.8U Expired - Lifetime CN203895965U (en) | 2014-01-13 | 2014-01-13 | Line-side circuit capable of protecting electric locomotive high voltage transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203895965U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108773300A (en) * | 2018-06-13 | 2018-11-09 | 株洲时代电子技术有限公司 | A kind of contact net power supply high-pressure system and its application |
| CN111917096A (en) * | 2019-06-13 | 2020-11-10 | 中车大同电力机车有限公司 | Locomotive pantograph control system and locomotive |
-
2014
- 2014-01-13 CN CN201420018614.8U patent/CN203895965U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108773300A (en) * | 2018-06-13 | 2018-11-09 | 株洲时代电子技术有限公司 | A kind of contact net power supply high-pressure system and its application |
| CN108773300B (en) * | 2018-06-13 | 2021-09-10 | 株洲时代电子技术有限公司 | High-voltage system of power supply of contact network and application thereof |
| CN111917096A (en) * | 2019-06-13 | 2020-11-10 | 中车大同电力机车有限公司 | Locomotive pantograph control system and locomotive |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141022 |
|
| CX01 | Expiry of patent term |