CN106828201A - A kind of electric railway system of use HVDC contact net - Google Patents
A kind of electric railway system of use HVDC contact net Download PDFInfo
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- CN106828201A CN106828201A CN201710039241.0A CN201710039241A CN106828201A CN 106828201 A CN106828201 A CN 106828201A CN 201710039241 A CN201710039241 A CN 201710039241A CN 106828201 A CN106828201 A CN 106828201A
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- 230000003137 locomotive effect Effects 0.000 claims abstract description 24
- 239000000203 mixture Substances 0.000 claims abstract description 5
- 238000004146 energy storage Methods 0.000 claims description 11
- 230000008450 motivation Effects 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 abstract description 6
- 230000000630 rising effect Effects 0.000 abstract 1
- 230000005540 biological transmission Effects 0.000 description 13
- 230000005611 electricity Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000000819 phase cycle Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
- B60M3/00—Feeding power to supply lines in contact with collector on vehicles; Arrangements for consuming regenerative power
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L9/00—Electric propulsion with power supply external to the vehicle
- B60L9/16—Electric propulsion with power supply external to the vehicle using ac induction motors
- B60L9/18—Electric propulsion with power supply external to the vehicle using ac induction motors fed from dc supply lines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
- B60M3/00—Feeding power to supply lines in contact with collector on vehicles; Arrangements for consuming regenerative power
- B60M3/06—Arrangements for consuming regenerative power
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2200/00—Type of vehicles
- B60L2200/26—Rail vehicles
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses a kind of electric railway system of use HVDC contact net, it includes：High voltage AC bus, traction substation, HVDC contact net, high voltage dc bus, pantograph, rail and electric locomotive；Traction substation one end connects high voltage AC bus, and other end connection high voltage dc bus, are high voltage direct current by the AC conversion on high voltage AC bus, and be transferred to high voltage dc bus；The high voltage dc bus connect HVDC contact net and rail, contact net, pantograph, electric locomotive, rail composition power circuit；The present invention proposes the corresponding brand-new electric railway topological structure of HVDC contact net, not only solving the power negative-sequence current of generation of current single-phase rotation influences the problem of the power network quality of power supply, and the rising of contact net voltage is also greatly improved the performance of electric railway.
Description
Technical field
The present invention relates to electric energy transformation technology in electric railway, more particularly to a kind of electricity of use HVDC contact net
Gasification railway implementation.
Background technology
At present, China's electric railway traction net is the 110kV/220kV power takings from local power administration, by tractive transformer
It is converted into single phase industrial frequence 27.5kV AC-powereds.Because Traction networks use single-phase alternating current, must occur in power network
The negative-sequence current produced because of three-phase power imbalance.Electric railway is to be directly accessed the large of power system to use TV university
Family, the negative-sequence current directly affects the electric power quality of whole power network.In order to alleviate negative-sequence current, generally using adjacent traction power transformation
The method of institute's rotation phase sequence, so as to cross split-phase in the presence of multiple.This electric power system that there is split-phase is discontinuous due to its power supply, makes
Electric current in pantograph off and on, leverage the rotating speed and direct torque of traction electric machine in electric locomotive, have impact on
The operation of locomotive.This phenomenon is obvious with heavy haul railway at a high speed.
Solve the problems, such as that one of method of split-phase is used again after alternating current is converted into direct current, hand over electricity after straight isolation
Network electric energy quality can be significantly improved.Using electric railway with connect electric power system be feasible method therein it
One.DC high-voltage is converted into single-phase alternating current by the method in traction substation, and then the alternating current is linked into railway connects
In net-fault, used for electric locomotive.
In addition, the state modulator of alternating current is in addition to amplitude, it is necessary to which frequency and phase are taken in.Because exchange is
The inherent limitation of system, the stability control problem of AC electric power systems two ends synchronous operation, can limit electricity in electricity transmission process
The energy and distance of line of force road conveying；Stability problem makes the control of AC system complicated, responds slack-off therewith, operation inconvenience,
It is unfavorable for multi objective control simultaneously.These characteristics cause that direct current transportation is more efficient compared with exchanging in subregion management and running, in event
More aobvious advantage in the Emergency Assistance of barrier, prevents the further expansion of accident.Direct current transportation compared with ac transmission, also in the presence of economy
Advantage in terms of effect：Direct current transportation does not have the reactive power consumption of induction reactance and capacitive reactance along line voltage Stationary Distribution, it is not necessary to electricity in parallel
Resist and carry out electrode compensation, electric energy loss is small, electrical energy transportation efficiency is higher；When identical cable insulation grade is used for alternating current circuit, line
Road allows voltage for half, therefore under identical conveying voltage conditions, direct current cables is more cheap；The construction of direct current transportation is in classification point
The aspect such as phase and compatilizing mechanism more facilitates, and is conducive to the performance of early stage economic benefit.Although direct current transportation needs what is built
Current conversion station is bigger than the investment of substations of ac transmission, comprehensively for transmission line length more than it is of equal value apart from when, direct current transportation
Construction cost is low.
The content of the invention
Present invention aim in view of the shortcomings of the prior art, there is provided a kind of electrified iron of use HVDC contact net
Road system.The present invention can solve the problems, such as split-phase, while reducing contact net loss, improve power supply reliability.
The purpose of the present invention is achieved through the following technical solutions：A kind of electrification of use HVDC contact net
The railway system, it includes：High voltage AC bus, traction substation, high voltage dc bus, HVDC contact net, pantograph, steel
Rail and electric locomotive；Wherein, the voltage of the high voltage AC bus is 110kV, 220kV or 330kV；The traction substation one
End connection high voltage AC bus, other end connection high voltage dc bus, are 10- by the AC conversion on high voltage AC bus
The high voltage direct current of 30kV, and it is transferred to high voltage dc bus；The high voltage dc bus connect HVDC contact net and steel
Rail；HVDC contact net, pantograph, electric locomotive, rail are sequentially connected electrically, and constitute high voltage DC power loop, and it is right to realize
The power supply of electric locomotive.
Further, the traction substation includes transformer, rectifier and energy storage device；Wherein, the transformer one
End connection high voltage AC bus, other end connection rectifier, 10- is converted into by the High Level AC Voltage of 110kV, 220kV or 330kV
30kV High Level AC Voltages；The high-voltage alternating electric rectification that the rectifier will be depressured is the high voltage direct current of 10-30kV, is then passed
It is defeated to high voltage dc bus；The energy storage device is connected with high voltage dc bus.
Further, the direct current in high voltage dc bus passes through HVDC contact net, pantograph, electric locomotive, steel
The power circuit of rail, completes the power supply to electric locomotive internal unit.
Further, the electric locomotive internal motivation system and its electric power system are become by electronic power inverter, high frequency
Depressor, rectifier, inverter, traction electric machine are sequentially connected composition；Wherein, pantograph transmission 10-30kV high voltage direct currents by
Electronic power inverter is converted into the high-frequency and high-voltage alternating current of 10-30kV, 2kHz, then is converted into 3kV, 2kHz by high frequency transformer
High frequency low voltage alternating current；The low-voltage DC of 3kV is converted into by rectifier again, driving traction electricity is finally converted into by inverter
2kV, 140Hz low frequency ac of machine.
The beneficial effects of the invention are as follows：
1st, the present invention with present in the technology for using compared with, solved the problems, such as split-phase, high-speed pulling motor on locomotive
Control effect can be improved, and locomotive operation conditions under high speed or case of heavy load is optimized.
2nd, contact net electric power system of the invention is direct current transportation, under the premise of identical conveying voltage, DC transmission system
Stronger compared to AC transmission system stability, control is more accurate, more convenient, and line loss is smaller.
3rd, contact net electric power system of the invention is D.C. high voltage transmission, and the 3kV used at present with other countries, area connects
Net-fault power supply mode is compared, and the contact net voltage of 10-30kV causes that contact net transmission losses is smaller, with electric current in power contact net
It is smaller, therefore the capacity of transmission line of electricity is improve, it is that follow-up possible Railway loads are improved, base has been laid in speed of service lifting
Plinth.
4th, contact net electric power system of the invention is D.C. high voltage transmission, can be by each department HVDC transmission line
Interconnection, realizes that the electric power system of houlage network is reliable, safety operation.
5th, the energy storage device of HVDC side of the present invention can manage the storage and release of electric energy concentratedly, such as reclaim train system
Energy when dynamic, improves utilization rate of electrical；Peak power when starting is provided, plays a part of peak load shifting, effectively improve transmission of electricity
Reliability.
6th, controlled rectification and energy storage device can effectively suppress harmonic wave in traction substation of the present invention, improve power factor,
So as to increase stability of power system, suppress power system oscillation, the improvement power network quality of power supply.
Brief description of the drawings
Fig. 1 is to use the general structure topology schematic diagram of the electric railway system of HVDC contact net；
Fig. 2 is traction substation internal structure schematic diagram；
Fig. 3 is the power electronic equipment connection figure inside electric locomotive；
In figure：1st, high voltage AC bus, 2, traction substation, 3, high voltage dc bus, 4, HVDC contact net, 5, receive
Pantograph, 6, rail, 7, electric locomotive, 8, transformer, 9, rectifier, 10, energy storage device, 11, electronic power inverter, 12, high
Frequency power transformer, 13, rectifier, 14, inverter, 15, traction electric machine.
Specific embodiment
The invention will be further described with reference to the accompanying drawings and examples.
As shown in figure 1, the present invention is included using the electric railway system of HVDC contact net：High voltage AC bus 1,
Traction substation 2, high voltage dc bus 3, HVDC contact net 4, pantograph 5, rail 6 and electric locomotive 7.
Wherein, the three-phase high-voltage AC power of high voltage AC bus 1 still take from electric railway by way of each area
And city, generally take 110kV/220kV/330kV.
The one end of traction substation 2 connects high voltage AC bus 1, other end connection high voltage dc bus 3.High-voltage alternating is female
AC conversion on line 1 is the high voltage direct current of 10-30kV, and is transferred to high voltage dc bus 3.
The connection of high voltage dc bus 3 HVDC contact net 4 and rail 6, its power circuit by contact net 4, pantograph 5,
Electric locomotive 7, rail 6 are sequentially connected composition, complete the power supply to the internal unit of electric locomotive 7.
As shown in Fig. 2 traction substation 2 includes transformer 8, rectifier 9 and energy storage device 10.
Wherein, the one end of transformer 8 connection high voltage AC bus 1, other end connection rectifier 9, will take from AC network
High-tension electricity carries out step-down treatment, is converted into the High Level AC Voltage of 10-30kV.
The high-voltage alternating electric rectification that rectifier 9 will be depressured is the high voltage direct current of 10-30kV, is then transferred to straightening high
Stream bus 3.Rectifier 9 can be divided into uncontrollable rectification and controlled rectification.Preferably embodiment can be used IGCT or insulated gate
Bipolar transistor (IGBT) realizes controlled rectification by pulse width modulation (PWM), and then can realize to harmonic wave in power network
Weakening and the correction to power factor, improve the power network quality of power supply.
Energy storage device 10 is connected with high voltage dc bus 3, and energy is stored using flywheel or super capacitor.Energy storage device 10
Not only coordinate with rectifier 9 and play a part of power network filtering, improve the quality of power supply, four-quadrant can also be passed through in train braking
The power electronic equipment of work recovers energy, and improves the utilization rate of electric energy.In addition, energy storage device 10 electric energy is carried out it is centrally stored
And release, peak power can be provided in launch train, play a part of peak load shifting, so as to increase the reliability of power system
Property.
As shown in figure 3, the internal motivation system of electric locomotive 7 and its electric power system are become by electronic power inverter 11, high frequency
Depressor 12, rectifier 13, inverter 14, traction electric machine 15 are sequentially connected composition.
Wherein, electronic power inverter 11, the high voltage direct current (10-30kV) for pantograph to be transmitted is converted into high frequency
High Level AC Voltage (10-30kV, 2kHz), the advantage for being converted into high-frequency alternating current is the small volume of high frequency transformer 12, is easy to peace
Loaded in electric locomotive 7, while its conversion efficiency is higher than Industrial Frequency Transformer.
High frequency transformer 12, by high-frequency and high-voltage alternating current (10-30kV, 2kHz) be converted into high frequency low voltage alternating current (3kV,
2kHz)。
Rectifier 13, low-voltage DC (3kV) is converted into by high frequency low voltage alternating current (3kV, 2kHz).
Inverter 14, low-voltage DC (3kV) is converted into can drive traction electric machine in current electric railway system
15 low frequency ac (2kV, 140Hz).
The voltage magnitude occurred in above-mentioned electric locomotive internal electric energy conversion process is citing with frequency, only to this
The explanation of invention, is not intended to limit the invention.In practical application can according to specific power electronic equipment electric energy amplitude,
Frequency translation scope and traction electric machine concrete model requirement voltage (380-4000V) are adjusted.It should be pointed out that electric
The change railway system is not departed under the premise of topological structure of the invention, in spirit of the invention and and scope of the claims
Interior, any modification, replacement and change for making etc. are all contained in protection scope of the present invention.
Claims (3)
1. a kind of electric railway system of use HVDC contact net, it is characterised in that it includes：High voltage AC bus
(1), traction substation (2), high voltage dc bus (3), HVDC contact net (4), pantograph (5), rail (6) and electric power machine
Car (7)；Wherein, the voltage of the high voltage AC bus (1) is 110kV, 220kV or 330kV；The traction substation (2) one
End connection high voltage AC bus (1), the other end connects high voltage dc bus (3), and the alternating current on high voltage AC bus (1) is turned
The high voltage direct current of 10-30kV is turned to, and is transferred to high voltage dc bus (3)；The high voltage dc bus connect HVDC
Contact net (4) and rail (6)；HVDC contact net (4), pantograph (5), electric locomotive (7), rail (6) are sequentially connected electrically,
High voltage DC power loop is constituted, the power supply to electric locomotive (7) is realized.
2. the electric railway system of HVDC contact net is used according to claim 1, it is characterised in that the traction
Transformer station (2) includes transformer (8), rectifier (9) and energy storage device (10)；Wherein, transformer (8) one end connection high pressure
Ac bus (1), the other end connects rectifier (9), and the High Level AC Voltage of 110kV, 220kV or 330kV is converted into 10-30kV
High Level AC Voltage；The high-voltage alternating electric rectification that the rectifier (9) will be depressured is the high voltage direct current of 10-30kV, is then passed
It is defeated to high voltage dc bus (3)；The energy storage device (10) is connected with high voltage dc bus (3), for improving power network electric energy matter
Amount, while being managed concentratedly to electric energy.
3. the electric railway system of HVDC contact net is used according to claim 1, it is characterised in that the electric power
Locomotive (7) internal motivation system and its electric power system are by electronic power inverter (11), high frequency transformer (12), rectifier
(13), inverter (14), traction electric machine (15) are sequentially connected composition；Wherein, electronic power inverter (11) passes pantograph (5)
Defeated 10-30kV high voltage direct currents are converted into the high-frequency and high-voltage alternating current of 10-30kV, 2kHz, then are turned by high frequency transformer (12)
Turn to the high frequency low voltage alternating current of 3kV, 2kHz；The low-voltage DC of 3kV is converted into by rectifier (13) again, finally by inverter
(14) 2kV, 140Hz low frequency ac for driving traction electric machine (11) are converted into.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710039241.0A CN106828201A (en) | 2017-01-19 | 2017-01-19 | A kind of electric railway system of use HVDC contact net |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710039241.0A CN106828201A (en) | 2017-01-19 | 2017-01-19 | A kind of electric railway system of use HVDC contact net |
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| CN106828201A true CN106828201A (en) | 2017-06-13 |
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| CN201710039241.0A Pending CN106828201A (en) | 2017-01-19 | 2017-01-19 | A kind of electric railway system of use HVDC contact net |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108312898A (en) * | 2018-03-30 | 2018-07-24 | 北京千驷驭电气有限公司 | The dynamic model simulator of simcity rail traffic vehicles |
| CN115549065A (en) * | 2022-11-28 | 2022-12-30 | 中铁电气化局集团有限公司 | Cooperative traction power supply system and method suitable for high-speed railway height-rush test |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108312898A (en) * | 2018-03-30 | 2018-07-24 | 北京千驷驭电气有限公司 | The dynamic model simulator of simcity rail traffic vehicles |
| CN108312898B (en) * | 2018-03-30 | 2024-01-05 | 北京千驷驭电气有限公司 | Dynamic simulation device for simulating urban rail transit vehicle |
| CN115549065A (en) * | 2022-11-28 | 2022-12-30 | 中铁电气化局集团有限公司 | Cooperative traction power supply system and method suitable for high-speed railway height-rush test |
| CN115549065B (en) * | 2022-11-28 | 2023-03-24 | 中铁电气化局集团有限公司 | Cooperative traction power supply system and method suitable for high-speed railway height-rush test |
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Inventor after: Fang Youtong Inventor after: He Yaping Inventor after: Guo Yuliang Inventor after: Wu Lijian Inventor after: Huang Xiaoyan Inventor after: Ma Jien Inventor after: Zhang Jian Inventor after: Zhou Jing Inventor after: Niu Feng Inventor before: Fang Youtong Inventor before: Guo Yuliang Inventor before: Wu Lijian Inventor before: Huang Xiaoyan Inventor before: Ma Jien Inventor before: Zhang Jian Inventor before: Zhou Jing Inventor before: Niu Feng |
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Application publication date: 20170613 |