CN108859874A - One kind is completely through alternating current traction power supply system - Google Patents
One kind is completely through alternating current traction power supply system Download PDFInfo
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- CN108859874A CN108859874A CN201710339083.0A CN201710339083A CN108859874A CN 108859874 A CN108859874 A CN 108859874A CN 201710339083 A CN201710339083 A CN 201710339083A CN 108859874 A CN108859874 A CN 108859874A
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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
- B60M3/02—Feeding power to supply lines in contact with collector on vehicles; Arrangements for consuming regenerative power with means for maintaining voltage within a predetermined range
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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
- B60M3/04—Arrangements for cutting in and out of individual track sections
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- Mechanical Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention discloses one kind completely through alternating current traction power supply system, including several electric substations；Electric substation includes several cophase supply devices, left supply arm, is connected to for electroneutral section and right supply arm, and between the supply arm of adjacent electric substation；The input terminal of cophase supply device connects power supply grid, output end connects drawing electric network bus, cophase supply device is used to for the single-phase alternating current that the three-phase alternating current in power supply grid is converted to specific voltage being delivered to drawing electric network bus, and the power of cophase supply device is allocated control according to ad hoc rules；Left supply arm and between electroneutral section, and for being disconnected respectively by parallel lines between electroneutral section and right supply arm, and left supply arm, for electroneutral section and right supply arm it is separately connected drawing electric network bus.The present invention can guarantee that the supply arm in each electric substation is in same phase, avoid train phenomenon of arc discharge from occurring, highly-safe, the runnability of train is good.
Description
Technical field
The present invention relates to railway power supply technical fields, more particularly to one kind completely through alternating current traction power supply system.
Background technique
The electric railway overwhelming majority uses ac power supply system in the world at present, for balancing the load and eliminates negative phase-sequence point
Amount, generallys use the power supply mode of segmented wheel commutation sequence, i.e. out-phase power supply mode, this results in traction power supply to certainly exist on the net
Electric split-phase, shown in Figure 1, Fig. 1 is the structural schematic diagram of current out-phase tractive power supply system.
Wherein, electric system provides the high voltage power supply of 110kV/220kV, and capacity is generally large, can bear biggish
Short circuit current and harmonic current.Tractive transformer completes the conversion of three-phase high-voltage exchange to secondary side two-phase low pressure, due to secondary side
Non- three-phase symmetrical (being α, β two-phase in figure), lead to the primary current asymmetrical three-phase of tractive transformer, in other words negative-sequence current
In the presence of.25kV voltage is connected in Traction networks by transformer secondary side using feeder line, then through Traction networks conducting wire, pantograph access column
Vehicle, and a complete circuit is constituted through rail and return wire.
Out-phase power supply refer to that the voltage magnitude of two adjacent supply arms and phase are different, example as shown in figure 1 α 1, β 1, α 2,
2 four supply arms of β, section voltage adjacent to each other is generally different, thus cause between two supply arms must using electric split-phase or
Non-Electric region is said to carry out electrical isolation.The presence of electric split-phase not only affects Comfortability of Train and speed, more likely to arrange
Vehicle calls in the electric split-phase section without electricity, or leads to arcing, and even scaling loss Traction networks under serious conditions seriously affect system safety
Reliability.
Therefore, how to provide a kind of cophase supply is those skilled in the art's mesh completely through alternating current traction power supply system
Preceding problem to be solved.
Summary of the invention
The object of the present invention is to provide one kind completely through alternating current traction power supply system, can guarantee in each electric substation
Supply arm is in same phase, avoids train phenomenon of arc discharge from occurring, highly-safe, the runnability of train is good.
In order to solve the above technical problems, the present invention provides one kind completely through alternating current traction power supply system, including several
A electric substation；The electric substation includes several cophase supply devices, left supply arm, for electroneutral section and right supply arm, and phase
It is connected between the supply arm of adjacent electric substation；
The input terminal of the cophase supply device connects power supply grid, and output end connects drawing electric network bus, the same to phase
Power supply unit is used to for the single-phase alternating current that the three-phase alternating current in the power supply grid is converted to specific voltage being delivered to described
Drawing electric network bus, and the power of the cophase supply device is allocated control according to ad hoc rules；
The left supply arm and described between electroneutral section and described between electroneutral section and the right supply arm
It is disconnected respectively by parallel lines, and the left supply arm, described is separately connected described lead for electroneutral section and the right supply arm
Draw power grid bus.
Preferably, the cophase supply device specifically includes：
Three-phase transformer, the high-pressure side of the three-phase transformer connect the power supply grid, and low-pressure side connects three phase transformation lists
The input terminal of phase converter；
The output end of the three phase transformations single phase ac device connects the drawing electric network bus；The three phase transformations single phase ac device
Three-phase current for exporting the three-phase transformer is converted to monophase current.
Preferably, the cophase supply device specifically includes：
Tractive transformer, for the three-phase alternating current of the power supply grid to be converted to two-way single-phase alternating current；It is described to lead
The first via single-phase output end for drawing transformer includes the terminals and ground terminal for being directly connected to the drawing electric network bus, and second
Road single-phase output end connects in the same direction for electric converter；
Described includes in the same direction several internal transformers and several internal current transformers for electric converter；It is each described interior
The input terminal of portion's transformer is separately connected the second tunnel single-phase output end；
The internal transformer includes multiple groups transformation winding, wherein the positive-negative output end of first group of transformation winding connects respectively
Connect the drawing electric network bus and ground terminal, the output end of i-th group of transformation winding respectively with i-th in remaining internal transformer
It organizes the output end of transformation winding and connects and connect afterwards with the input terminal of i-th of internal current transformer；The internal current transformer is just
Negative output terminal is separately connected the drawing electric network bus and ground terminal；2≤i≤N, N are the number of the transformation winding.
Preferably, first group of transformation winding especially by block switch connects the drawing electric network in the internal transformer
Bus；Between the transformation winding and the input terminal of the internal current transformer and the positive output end of the internal current transformer with
It is connected between the drawing electric network bus especially by block switch.
Preferably, data interaction is carried out by communication link between the cophase supply device of adjacent electric substation；
The system also includes：
Control device, the power supply amplitude and phase for each electric substation according to acquisition are according to the ad hoc rules
Distribution controls the power of each cophase supply device.
Preferably, the communication link is specially optic communication links, wireless communication link, appointing in satellite communication link
It is a kind of.
Preferably, an electric substation in several described electric substations is main transformer station, remaining is from electric substation；Often
A cophase supply device in several described cophase supply devices of a electric substation is main cophase supply device, remaining
For from cophase supply device；
The control device further includes：
Principal and subordinate's deployment unit, for deploying the power of each normal electric substation when there is electric substation's failure；When described
When main transformer station's failure, the switching of principal and subordinate electric substation is carried out；When there is cophase supply device failure, each normal same phase is deployed
The power of power supply unit；When the main cophase supply device failure, the switching of principal and subordinate's cophase supply device is carried out.
Preferably, the left supply arm, described pass through block switch respectively with the right supply arm for electroneutral section and connect
The drawing electric network bus.
Preferably, the left supply arm and described between electroneutral section and described for electroneutral section and the right confession
It is disconnected respectively by overlap formula split-phase between electric arm.
The present invention provides one kind completely through alternating current traction power supply system, includes several in each electric substation in system
A cophase supply device, the cophase supply device are conveyed to drawing electric network mother after being handled the alternating current in power supply grid
Line, left supply arm are separately connected drawing electric network bus for electroneutral section and right supply arm, and exchange is obtained in drawing electric network bus
Electricity simultaneously passes through pantograph as train power supply.It due to left supply arm, for electroneutral section and right supply arm is obtained from same bus
Electric energy, therefore be same phase between each supply arm in same electric substation, i.e. the voltage magnitude of electric current is identical with phase.Also,
Supply arm between different electric substations is in connected state, in order to guarantee the voltage between supply arm that different electric substations are connected
Electric current is consistent, then enables the power of each cophase supply device carry out unified distribution control according to ad hoc rules, and then guarantee
The voltage magnitude of supply arm in each electric substation and the unification of phase avoid train phenomenon of arc discharge caused by out-phase is powered
Occur, highly-safe, the runnability of train is more preferable.
Detailed description of the invention
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to institute in the prior art and embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the structural schematic diagram of current out-phase tractive power supply system；
Fig. 2 is a kind of structural schematic diagram completely through alternating current traction power supply system provided by the invention.
Specific embodiment
Core of the invention is to provide one kind completely through alternating current traction power supply system, can guarantee in each electric substation
Supply arm is in same phase, avoids train phenomenon of arc discharge from occurring, highly-safe, the runnability of train is good.
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
The present invention provides one kind completely through alternating current traction power supply system, including several electric substations；Electric substation includes
Several cophase supply devices, left supply arm connect for electroneutral section and right supply arm, and between the supply arm of adjacent electric substation
It is logical；
The input terminal of cophase supply device connects power supply grid, and output end connects drawing electric network bus, cophase supply device
Single-phase alternating current for the three-phase alternating current in power supply grid to be converted to specific voltage is delivered to drawing electric network bus, and same
The power of phase power supply unit is allocated control according to ad hoc rules；
Left supply arm and between electroneutral section, and for disconnected by parallel lines respectively between electroneutral section and right supply arm
It opens, and left supply arm, for electroneutral section and right supply arm is separately connected drawing electric network bus.
It is understood that causing since there are difference between the voltage magnitude and phase of the supply arm of different electric substations
Train directly cannot be transitioned into another electric substation for an electric substation, need to be arranged between electric substation subregion institute, but this hair
By will be connected between the supply arm of adjacent electric substation in bright, and the power of each electric substation is distributed by ad hoc rules, so that
The power supply of each electric substation is consistent, to realize the direct electrical connection of adjacent electric substation, does not need to be arranged special
Subregion institute avoids power blackout situation of train when by subregion institute and occurs, and the comfort level of train operation is higher.
In addition, due to left supply arm, between electroneutral section and right supply arm by parallel lines disconnect so that left supply arm
There is no physical connection between right supply arm, i.e. split-phase still has in the physical sense, but train is when passing through parallel lines,
It contacts with the two-way electric wire at parallel lines both ends, so that train can not be powered off completely through the split-phase, realizes respectively
The purpose of cophase supply.
In a preferred embodiment, shown in Figure 2, Fig. 2 is provided by the invention a kind of completely through alternating current traction power supply
The structural schematic diagram of system.Cophase supply device specifically includes：
Three-phase transformer, the high-pressure side of three-phase transformer connect power supply grid, and low-pressure side connects three phase transformation single phase ac devices
Input terminal；
The output end of three phase transformation single phase ac devices connects drawing electric network bus；Three phase transformation single phase ac devices are used for three phase transformations
The three-phase current of depressor output is converted to monophase current.
It is understood that the course of work of three phase transformation single phase ac devices can be specially first to be rectified into three-phase alternating current
Then DC inverter is being single-phase alternating current by direct current, the operation that can should be also depressured simultaneously as needed in the process.
Certainly, the above is only a kind of specific implementation, three phase transformation single phase ac devices can choose IGBT, IGCT, IPM or silicon carbide etc.
A variety of patterns such as two level, three level, the cascade of H bridge, chain type, MMC, three phase transformation lists can be used in different semiconductor devices, topology
Phase converter can have filter, can not also use filter, i.e. the present invention does not limit the specific knot that three-phase becomes single phase ac device
Structure.
In addition, the reactive compensation of feeder line and the improvement of low-order harmonic may be implemented by above-mentioned cophase supply device, thus
Realize the comprehensive treatment of transformer power quality.
In another preferred embodiment, cophase supply device specifically includes：
Tractive transformer, for the three-phase alternating current of power supply grid to be converted to two-way single-phase alternating current；Tractive transformer
First via single-phase output end include the terminals and ground terminal for being directly connected to drawing electric network bus, the second tunnel single-phase output end
Connection is in the same direction for electric converter；
It include in the same direction several internal transformers and several internal current transformers for electric converter；Each internal transformer
Input terminal be separately connected the second tunnel single-phase output end；
Internal transformer includes multiple groups transformation winding, wherein the positive-negative output end of first group of transformation winding, which is separately connected, to be led
Draw power grid bus and ground terminal, the output end of i-th group of transformation winding respectively with i-th group of transformation in remaining internal transformer around
The output end and connecing of group is connect with the input terminal of i-th of inside current transformer afterwards；The positive-negative output end of internal current transformer is separately connected
Drawing electric network bus and ground terminal；2≤i≤N, N are the number of transformation winding.
It is understood that transformer can not be directly realized by the single-phase purpose of three phase transformations, it is therefore desirable to by three-phase inversion
It is realized for two-way is single-phase.Also, in internal transformer in addition to first group of transformation winding, the function of remaining transformation winding is identical
, the number that this part winding is specifically arranged can according to the actual situation depending on.Also, in the same direction for being arranged in multiple in electric converter
The purpose of portion's transformer is considered for Redundancy Design, and the number specifically designed can be determined according to actual needs.
It is further known that first group of transformation winding is female especially by block switch connection drawing electric network in internal transformer
Line；Between transformation winding and the input terminal of internal current transformer, and internal current transformer positive output end and drawing electric network bus it
Between connected especially by block switch.
It should be noted that each transformation winding individually by switch connect drawing electric network bus, enable to transformation around
Between group independently of one another, once there is the failure of transformation winding, can be worked as simultaneously by the connection of disconnection switch cutoff failure winding
When having internal current transformer failure, it can also be switched by switching, disconnect failure current transformer, selected normal current transformer to access, mention
The reliability of high system.
In a preferred embodiment, data interaction is carried out by communication link between the cophase supply device of adjacent electric substation；
The system further includes：
Control device, power supply amplitude and phase for each electric substation according to acquisition are distributed according to ad hoc rules to be controlled
The power of each cophase supply device.
It is understood that carrying out data interaction by high speed communications link between each traction substation, realize each
Traction substation power supply amplitude and phase follow, by implementing control strategy appropriate, main transformer station to cophase supply device
Realize voltage source control, remaining from electric substation carry out current source model- following control, control between each electric substation trend flow direction and
Size, that realizes each electric substation's power approaches capacity self-adjusted block.
Wherein, communication link is specially any one of optic communication links, wireless communication link, satellite communication link.
Certainly, other kinds of communication link also can be used, the present invention is not especially limited this.
In another embodiment, data interaction can not be carried out between each traction substation by communication link, but
By presetting the consistent relationship of voltage and power in each cophase supply device, controls each cophase supply device and protect always
Output phase is held with the alternating current of amplitude and phase, realizes self-adjusted block and the control of power and trend.Which kind of side specifically used
Formula realizes that distribution controls the power of each cophase supply device, and the present invention is simultaneously not specifically limited.
Specifically, an electric substation in several electric substations is main transformer station, remaining is from electric substation；Each electric substation
Several cophase supply devices in a cophase supply device be main cophase supply device, remaining is from cophase supply Denso
It sets；
Control device further includes：
Principal and subordinate's deployment unit, for deploying the power of each normal electric substation when there is electric substation's failure；Work as main transformer
When electric institute's failure, the switching of principal and subordinate electric substation is carried out；When there is cophase supply device failure, each normal cophase supply is deployed
The power of device；When main cophase supply device failure, the switching of principal and subordinate's cophase supply device is carried out.
It is understood that the cophase supply device that each electric substation includes under normal circumstances generally uses a master one standby
Form as redundancy, but needs guarantee identical with main cophase supply device from cophase supply device, so that same phase in this way
The burden of power supply unit is larger, therefore, can preferably use the form of a main prepare more, enable and multiple dividing jointly from cophase supply device
The power of main cophase supply device is carried on a shoulder pole, is reduced each from the power burden of cophase supply device.
Preferably, left supply arm, pass through block switch respectively with right supply arm for electroneutral section and connect drawing electric network
Bus.Once there is supply arm failure, the block switch between this section of supply arm and drawing electric network bus can be disconnected, when
When disconnecting for electroneutral section, system can be normal through phase-separating section using split-phase mode.
It is understood that by setting block switch, it can be achieved that sectionalised protection and the maintenance of supply arm, improve system
It is maintainable.
Further, left supply arm and between electroneutral section, and for leading to respectively between electroneutral section and right supply arm
Cross the disconnection of overlap formula split-phase.
It should be noted that general train operation is two-way, therefore left supply arm, equal for electroneutral section and right supply arm
It is set as up and down line, uplink is completely the same with downgoing line, and uplink can be separately connected with downgoing line
Drawing electric network bus；Alternatively, it is also possible to which uplink drawing electric network bus and downlink drawing electric network bus, up and down line is respectively set
It connects with corresponding drawing electric network bus, is specifically not especially limited using which kind of mode present invention respectively.
In addition, the voltage on drawing electric network bus is specifically as follows 25kV, certainly, the present invention is not especially limited this.
The present invention provides one kind completely through alternating current traction power supply system, includes several in each electric substation in system
A cophase supply device, the cophase supply device are conveyed to drawing electric network mother after being handled the alternating current in power supply grid
Line, left supply arm are separately connected drawing electric network bus for electroneutral section and right supply arm, and exchange is obtained in drawing electric network bus
Electricity simultaneously passes through pantograph as train power supply.It due to left supply arm, for electroneutral section and right supply arm is obtained from same bus
Electric energy, therefore be same phase between each supply arm in same electric substation, i.e. the voltage magnitude of electric current is identical with phase；Also,
Supply arm between different electric substations is in connected state, in order to guarantee the voltage between supply arm that different electric substations are connected
Electric current is consistent, then enables the power of each cophase supply device carry out unified distribution control according to ad hoc rules, and then guarantee
The voltage magnitude of supply arm in each electric substation and the unification of phase avoid train phenomenon of arc discharge caused by out-phase is powered
Occur, highly-safe, the runnability of train is more preferable.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.For device disclosed in embodiment
For, since it is corresponded to the methods disclosed in the examples, so being described relatively simple, related place is said referring to method part
It is bright.
It should also be noted that, in the present specification, relational terms such as first and second and the like be used merely to by
One entity or operation are distinguished with another entity or operation, without necessarily requiring or implying these entities or operation
Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant meaning
Covering non-exclusive inclusion, so that the process, method, article or equipment for including a series of elements not only includes that
A little elements, but also including other elements that are not explicitly listed, or further include for this process, method, article or
The intrinsic element of equipment.In the absence of more restrictions, the element limited by sentence "including a ...", is not arranged
Except there is also other identical elements in the process, method, article or apparatus that includes the element.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (9)
1. one kind is completely through alternating current traction power supply system, which is characterized in that including several electric substations；The electric substation includes
Several cophase supply devices, left supply arm connect for electroneutral section and right supply arm, and between the supply arm of adjacent electric substation
It is logical；
The input terminal of the cophase supply device connects power supply grid, and output end connects drawing electric network bus, the cophase supply
Device is used to the single-phase alternating current that the three-phase alternating current in the power supply grid is converted to specific voltage being delivered to the traction
Power grid bus, and the power of the cophase supply device is allocated control according to ad hoc rules；
The left supply arm and it is described between electroneutral section and it is described between electroneutral section and the right supply arm respectively
It is disconnected by parallel lines, and the left supply arm, described is separately connected traction electricity for electroneutral section and the right supply arm
Net bus.
2. system according to claim 1, which is characterized in that the cophase supply device specifically includes：
Three-phase transformer, the high-pressure side of the three-phase transformer connect the power supply grid, and low-pressure side connects three phase transformation blow-ups
Flow the input terminal of device；
The output end of the three phase transformations single phase ac device connects the drawing electric network bus；The three phase transformations single phase ac device is used for
The three-phase current that the three-phase transformer exports is converted into monophase current.
3. system according to claim 1, which is characterized in that the cophase supply device specifically includes：
Tractive transformer, for the three-phase alternating current of the power supply grid to be converted to two-way single-phase alternating current；The traction becomes
The first via single-phase output end of depressor includes the terminals and ground terminal for being directly connected to the drawing electric network bus, and the second tunnel is single
Phase output terminal connects in the same direction for electric converter；
Described includes in the same direction several internal transformers and several internal current transformers for electric converter；Each internal change
The input terminal of depressor is separately connected the second tunnel single-phase output end；
The internal transformer includes multiple groups transformation winding, wherein the positive-negative output end of first group of transformation winding is separately connected institute
State drawing electric network bus and ground terminal, the output end of i-th group of transformation winding respectively with i-th group of change in remaining internal transformer
It presses the output end of winding and connects and connect afterwards with the input terminal of i-th of internal current transformer；Current transformer is positive and negative defeated inside described
Outlet is separately connected the drawing electric network bus and ground terminal；2≤i≤N, N are the number of the transformation winding.
4. system according to claim 3, which is characterized in that first group of transformation winding specifically leads in the internal transformer
It crosses block switch and connects the drawing electric network bus；Between the transformation winding and the input terminal of the internal current transformer, and
It is connected between the positive output end and the drawing electric network bus of the internal current transformer especially by block switch.
5. according to the described in any item systems of claim 2-4, which is characterized in that the cophase supply device of adjacent electric substation
Between data interaction carried out by communication link；
The system also includes：
Control device, power supply amplitude and phase for each electric substation according to acquisition are distributed according to the ad hoc rules
Control the power of each cophase supply device.
6. system according to claim 5, which is characterized in that the communication link is specially optic communication links, wireless
Any one of communication link, satellite communication link.
7. system according to claim 5, which is characterized in that carried out by a power transformation in several described electric substations
Main transformer station, remaining is from electric substation；A cophase supply in several described cophase supply devices of each electric substation
Electric installation is main cophase supply device, remaining is from cophase supply device；
The control device further includes：
Principal and subordinate's deployment unit, for deploying the power of each normal electric substation when there is electric substation's failure；When the main transformer
When electric institute's failure, the switching of principal and subordinate electric substation is carried out；When there is cophase supply device failure, each normal cophase supply is deployed
The power of device；When the main cophase supply device failure, the switching of principal and subordinate's cophase supply device is carried out.
8. system according to claim 5, which is characterized in that the left supply arm, described for electroneutral section and the right side
Supply arm passes through block switch respectively and connects the drawing electric network bus.
9. system according to claim 8, which is characterized in that the left supply arm and described between electroneutral section, with
And it is described for being disconnected respectively by overlap formula split-phase between electroneutral section and the right supply arm.
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| CN201710339083.0A CN108859874A (en) | 2017-05-15 | 2017-05-15 | One kind is completely through alternating current traction power supply system |
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| CN110103779A (en) * | 2019-05-13 | 2019-08-09 | 西南交通大学 | A kind of Design for Traction Substation method of cable perforation ac power supply system |
| CN110224377A (en) * | 2019-06-20 | 2019-09-10 | 西南交通大学 | Bus bar protecting method is drawn at a kind of perforation cophase supply electric substation and segmentation |
| CN111361462A (en) * | 2020-03-02 | 2020-07-03 | 株洲中车时代电气股份有限公司 | Non-split phase traction power supply device for electrified railway substation |
| CN111890997A (en) * | 2020-07-02 | 2020-11-06 | 中铁第一勘察设计院集团有限公司 | Main wiring of zoning station of electrified railway traction power supply system |
| CN113067484A (en) * | 2019-12-31 | 2021-07-02 | 中车永济电机有限公司 | Current transformer |
| CN113077979A (en) * | 2021-04-26 | 2021-07-06 | 中铁二院工程集团有限责任公司 | Adjustable traction transformer for flexible through bilateral power supply system and balanced current suppression method |
| CN113131484A (en) * | 2021-04-29 | 2021-07-16 | 西安开天铁路电气股份有限公司 | Distributed railway regenerative electric energy cloud control system |
| CN115571024A (en) * | 2022-12-08 | 2023-01-06 | 中国铁路设计集团有限公司 | Differential pressure control system between two power sections of traction power supply system |
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| CN110224377A (en) * | 2019-06-20 | 2019-09-10 | 西南交通大学 | Bus bar protecting method is drawn at a kind of perforation cophase supply electric substation and segmentation |
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| CN111361462A (en) * | 2020-03-02 | 2020-07-03 | 株洲中车时代电气股份有限公司 | Non-split phase traction power supply device for electrified railway substation |
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| CN113077979A (en) * | 2021-04-26 | 2021-07-06 | 中铁二院工程集团有限责任公司 | Adjustable traction transformer for flexible through bilateral power supply system and balanced current suppression method |
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| CN115571024A (en) * | 2022-12-08 | 2023-01-06 | 中国铁路设计集团有限公司 | Differential pressure control system between two power sections of traction power supply system |
| CN115571024B (en) * | 2022-12-08 | 2023-03-21 | 中国铁路设计集团有限公司 | Differential pressure control system between two power sections of traction power supply system |
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Application publication date: 20181123 |