CN109624794A - A kind of system for the ground connection reflux of EMU vehicle - Google Patents
A kind of system for the ground connection reflux of EMU vehicle Download PDFInfo
- Publication number
- CN109624794A CN109624794A CN201811516777.8A CN201811516777A CN109624794A CN 109624794 A CN109624794 A CN 109624794A CN 201811516777 A CN201811516777 A CN 201811516777A CN 109624794 A CN109624794 A CN 109624794A
- Authority
- CN
- China
- Prior art keywords
- grounding
- emu
- resistance
- vehicle
- ground
- Prior art date
- 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.)
- Pending
Links
- 238000010992 reflux Methods 0.000 title description 6
- 230000001681 protective effect Effects 0.000 claims abstract description 16
- 239000003990 capacitor Substances 0.000 claims abstract 3
- 239000004020 conductor Substances 0.000 abstract 2
- 238000004804 winding Methods 0.000 abstract 1
- 230000005611 electricity Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
- B60M5/00—Arrangements along running rails or at joints thereof for current conduction or insulation, e.g. safety devices for reducing earth currents
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Current-Collector Devices For Electrically Propelled Vehicles (AREA)
Abstract
一种用于动车组整车接地回流的系统，包括工作接地导线、保护接地导线、接地电阻，其特征在于：接地电阻旁并联一个接地电容。本发明在接地电阻旁并联一个接地电容，能够实现将动车组车体保护电流中的高频电流部分通过电容元件快速释放到大地的目的。动车组接地电阻绕圈式结构改为横向折叠排布结构，可以降低接地电阻自身的电感值，接地电阻电感值降至在设计允许范围内。
The utility model relates to a system for grounding return of the whole vehicle of an EMU, comprising a working grounding conductor, a protective grounding conductor and a grounding resistance, which is characterized in that a grounding capacitor is connected in parallel next to the grounding resistance. In the invention, a grounding capacitor is connected in parallel next to the grounding resistance, so that the high-frequency current part in the protection current of the EMU body can be quickly released to the ground through the capacitive element. The winding structure of the grounding resistance of the EMU is changed to a horizontally folded structure, which can reduce the inductance value of the grounding resistance itself, and the inductance value of the grounding resistance can be reduced to the allowable range of the design.
Description
Technical field
The present invention relates to rail vehicles to be grounded return-flow system, more particularly, to a kind of vehicle ground connection reflux system of EMU
System.
Background technique
EMU vehicle ground connection return-flow system is to maintain car body low potential, limitation car body overvoltage and inhibits traction current
It is back to the important link of car body, is of great significance to the normal work and personnel safety of electric apparatus mounted on vehicle.
EMU powered operation principle as shown in Figure 1, operating current from substation draw, through contact line conducting wire to roof by
Pantograph is transmitted further to electric apparatus mounted on vehicle, guides to wheel pair by working earthing conducting wire by the operating current of electric apparatus mounted on vehicle
On, using rail return current to substation.
EMU earthing mode includes working earthing mode and protective grounding mode, wherein working earthing mode is to pass through
Operating current in power supply return is guided to wheel to upper from mobile unit, constituted dynamic by working earthing conducting wire conducting operations electric current
The circuit of power supply main circuit when vehicle group is run, working earthing conducting wire, which is located at, has transformer vehicle.Protective grounding mode is to pass through guarantor
Protect earth lead and conduct protective current, i.e., by mobile unit cage connection to wheel to upper, prevent mobile unit shell in failure shape
Injury is charged under state and equipment, protective grounding conducting wire are located at non-transformer vehicle.
Due to being connected between Motor train unit body and car body by intercoil connection, under equal length, the resistance of rail is greater than vehicle
The resistance of intercoil connection between body passes through to there is the traction operating current on the rail of part to channel on vehicle by protective grounding conducting wire
Intercoil connection circulation in workshop causes reflux abnormal.It is known as interference electric current from the electric current that rail channels on vehicle by protective grounding conducting wire,
This electric current is mainly derived from the traction operating current flowed on rail, and interference mobile unit works normally.
Currently, preventing in interference electric current channelling to car body, the ground connection electricity of 0.5 Ω is increased on protective grounding conducting wire
Resistance, but also brings secondary problem simultaneously, and around ring type grounding structure resistance itself, there are larger inductance value, car bodies due to existing
Protective current high-frequency current part cannot be discharged into the earth well.
Summary of the invention
For existing EMU ground resistance, there are larger inductance values, are unfavorable for Motor train unit body protective current medium-high frequency electricity
Stream part is discharged into the problem of the earth well, and the present invention provides a kind of system for the ground connection reflux of EMU vehicle, so that
The protective current of Motor train unit body is discharged into the earth well, and it is poor to prevent between Motor train unit body and the earth that there are high potentials.
For achieving the above object, the present invention provides a kind of system for the ground connection reflux of EMU vehicle, including work
Make earth lead, protective grounding conducting wire, ground resistance, it is characterised in that: a ground capacity in parallel by ground resistance.
The ground resistance is laterally folded arrangement.
Present invention ground capacity in parallel by ground resistance, can be realized the height in Motor train unit body protective current
Frequency current segment is released quickly against the purpose of the earth by capacity cell.EMU ground resistance is changed to lateral folding around ring type structure
Folded arrangement, can reduce the inductance value of ground resistance itself, and ground resistance inductance value is down in design allowed band.
Detailed description of the invention
Fig. 1 is EMU powered operation schematic diagram；
Fig. 2 is present invention ground connection return-flow system arrangement figure；
Fig. 3 is ground resistance capacitive means schematic diagram in Fig. 2.
Specific embodiment
Referring to Fig. 2, Fig. 3, it includes working earthing conducting wire 1, protective grounding conducting wire 2, ground connection electricity that the present invention, which is grounded return-flow system,
Capacitive means 3 are hindered, the ground resistance capacitive means include ground resistance 301 and ground capacity 302, by ground resistance 301
A ground capacity 302 in parallel, the laterally folded arrangement of ground resistance 301, wherein tie point A, B of ground resistance are to be connected in series to
The tie point of protective grounding conducting wire.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811516777.8A CN109624794A (en) | 2018-12-12 | 2018-12-12 | A kind of system for the ground connection reflux of EMU vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811516777.8A CN109624794A (en) | 2018-12-12 | 2018-12-12 | A kind of system for the ground connection reflux of EMU vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109624794A true CN109624794A (en) | 2019-04-16 |
Family
ID=66072909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811516777.8A Pending CN109624794A (en) | 2018-12-12 | 2018-12-12 | A kind of system for the ground connection reflux of EMU vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109624794A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112519590A (en) * | 2020-12-03 | 2021-03-19 | 北京磁浮交通发展有限公司 | Magnetic-levitation train and vehicle grounding system thereof |
| CN115332826A (en) * | 2022-08-10 | 2022-11-11 | 中铁四院集团新型轨道交通设计研究有限公司 | System and method for eliminating induced voltage of electronic guide rubber-tyred electric vehicle |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006069406A (en) * | 2004-09-03 | 2006-03-16 | Railway Technical Res Inst | substation |
| CN102323561A (en) * | 2011-08-03 | 2012-01-18 | 刘冲 | A pulse large current amplitude calibration device for a semiconductor device test system |
| KR101407718B1 (en) * | 2012-12-18 | 2014-06-13 | 부산교통공사 | Appartus for stabilization the voltage of cathode in the ruber-type light train |
| CN104085318A (en) * | 2014-06-23 | 2014-10-08 | 北京交通大学 | Steel rail resonance grounding device |
| CN106335376A (en) * | 2016-11-03 | 2017-01-18 | 北京全路通信信号研究设计院集团有限公司 | Traction backflow device |
| CN209700448U (en) * | 2018-12-12 | 2019-11-29 | 中车长春轨道客车股份有限公司 | A kind of system for the ground connection reflux of EMU vehicle |
-
2018
- 2018-12-12 CN CN201811516777.8A patent/CN109624794A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006069406A (en) * | 2004-09-03 | 2006-03-16 | Railway Technical Res Inst | substation |
| CN102323561A (en) * | 2011-08-03 | 2012-01-18 | 刘冲 | A pulse large current amplitude calibration device for a semiconductor device test system |
| KR101407718B1 (en) * | 2012-12-18 | 2014-06-13 | 부산교통공사 | Appartus for stabilization the voltage of cathode in the ruber-type light train |
| CN104085318A (en) * | 2014-06-23 | 2014-10-08 | 北京交通大学 | Steel rail resonance grounding device |
| CN106335376A (en) * | 2016-11-03 | 2017-01-18 | 北京全路通信信号研究设计院集团有限公司 | Traction backflow device |
| CN209700448U (en) * | 2018-12-12 | 2019-11-29 | 中车长春轨道客车股份有限公司 | A kind of system for the ground connection reflux of EMU vehicle |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112519590A (en) * | 2020-12-03 | 2021-03-19 | 北京磁浮交通发展有限公司 | Magnetic-levitation train and vehicle grounding system thereof |
| CN112519590B (en) * | 2020-12-03 | 2022-07-05 | 北京磁浮交通发展有限公司 | Magnetic-levitation train and vehicle grounding system thereof |
| CN115332826A (en) * | 2022-08-10 | 2022-11-11 | 中铁四院集团新型轨道交通设计研究有限公司 | System and method for eliminating induced voltage of electronic guide rubber-tyred electric vehicle |
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