CN109625007A - A kind of novel grounded system of bullet train, automatic control system and control method - Google Patents
A kind of novel grounded system of bullet train, automatic control system and control method Download PDFInfo
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- CN109625007A CN109625007A CN201811606633.1A CN201811606633A CN109625007A CN 109625007 A CN109625007 A CN 109625007A CN 201811606633 A CN201811606633 A CN 201811606633A CN 109625007 A CN109625007 A CN 109625007A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61C—LOCOMOTIVES; MOTOR RAILCARS
- B61C17/00—Arrangement or disposition of parts; Details or accessories not otherwise provided for; Use of control gear and control systems
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
- H01R4/66—Connections with the terrestrial mass, e.g. earth plate, earth pin
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- Automation & Control Theory (AREA)
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- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Train Traffic Observation, Control, And Security (AREA)
Abstract
The invention discloses a kind of novel grounded system of bullet train, automatic control system and control methods; the novel grounded system includes contact net, bullet train and rail, and bullet train includes trailer, motor-car, resistance-capacitance type attachment device, protective earthing device and working earthing device；The bonding wire of motor-car and adjacent trailer or motor-car is provided with resistance-capacitance type attachment device, and bottom end is provided with bogie, at least provided with protective earthing device all the way between car body and shaft end；Trailer includes train head and transformer vehicle, and transformer vehicle is internally provided with tractive transformer, and the primary side neutral point of bottom end is provided with working earthing point, and its top and contact net are electrically connected；Working earthing point is arranged in parallel the working earthing device that three tunnels and shaft end are electrically connected；The present invention solves the problems, such as that protective grounding electric current distribution of the existing technology is uneven, vehicle car body electric current is excessive end to end and car body overvoltage surge is higher.
Description
Technical field
The invention belongs to earthed system technical fields, and in particular to a kind of novel grounded system of bullet train, automatic control
System and control method.
Background technique
Bullet train uses distributing power, after traction current is by taking turns to rail is leaked into, easily passes through protective grounding point weight
It newly is back to car body, local circulation is formed by bonding wire between each section car body, is caused close to working earthing point vehicle
The protective grounding electric current of body and end to end vehicle car body is larger.The working earthing of existing bullet train uses direct grounding way, protection
Ground connection use is directly grounded or grounded resistance-grounded system mode, although to a certain extent using grounding resistor earthing mode
It can inhibit earth current and enter car body formation circulation, but it causes the lifting of car body current potential, be unfavorable for train lifting bow, cross split-phase
When generated car body overvoltage surge release, this proposes the resistance to insulation performance of vehicle mounted electrical apparatus equipment higher
It is required that.That there are the distribution of protective grounding electric current is uneven for existing bullet train earthing mode, vehicle car body electric current is excessive end to end, car body surge
The higher problem of overvoltage improves optimization to its earthing mode, facilitates the safe and stable operation for promoting bullet train
Energy.
Summary of the invention
For above-mentioned deficiency in the prior art, the present invention proposes a kind of novel grounded system of bullet train, automatic control
System and control method, for solving, protective grounding electric current distribution of the existing technology is uneven, vehicle car body electric current is excessive end to end
And the higher problem of car body overvoltage surge.
In order to achieve the above object of the invention, the technical solution adopted by the present invention are as follows:
A kind of novel grounded system of bullet train is high including the contact net, bullet train and rail being successively electrically connected
Fast train includes trailer, motor-car, resistance-capacitance type attachment device, protective earthing device and working earthing device；
The bonding wire of motor-car and adjacent trailer or motor-car is provided with resistance-capacitance type attachment device, and bottom end is respectively provided with
There is bogie, at least provided with protective earthing device all the way between car body and shaft end；
Trailer includes train head and centrally located transformer vehicle, and transformer vehicle is internally provided with traction voltage transformation
Device, the primary side neutral point of bottom end is provided with working earthing point, and its top and contact net are electrically connected；
Working earthing point has been arranged in parallel three tunnel working earthing devices, and working earthing device and shaft end are electrically connected.
Further, resistance-capacitance type attachment device is the capacitive means and variable resistance being arranged in parallel；
The capacitance value range of capacitive means is the 1 μ F of μ F~10, and the resistance value of variable resistance is less than 0.5 Ω.
Further, the bottom end of train head, transformer vehicle and motor-car is respectively provided with there are two bogie, train head and
The bottom end of each bogie of motor-car is arranged in parallel two-way protective earthing device, protective earthing device one end and axis far from car body
End connection；
Protective earthing device all the way is arranged in parallel between the car body and shaft end of transformer vehicle, and in tractive transformer primary side
Three tunnel working earthing devices are provided between property point and carbon brush.
Further, the conductor that working earthing device connect for the primary side neutral point of tractive transformer with grounding carbon brush, connects
Ground carbon brush and shaft end are electrically connected, and protective earthing device is the connecting wire using direct grounding way.
A kind of automatic control system based on the novel grounded system of bullet train, including data acquisition unit, data processing
Unit and motor unit, data acquisition unit and motor unit are communicated to connect with data processing unit.
Further, data acquisition unit includes being set to the current sensor of each protective grounding point and positioned at train head
Control room data collecting card, the signal output end of current sensor is connected with the input terminal of data collecting card, data acquisition
The output end and data processing unit of card communicate to connect；
Motor unit includes the variable resistance for being set to the bonding wire of motor-car and adjacent trailer or motor-car, can
Variohm is connected on bonding wire, and in parallel with the capacitive means of bonding wire are located at；
Data processing unit is located at the control room of train head, and its respectively with the output end of data collecting card and variable
The resistance value control terminal of resistor communicates to connect.
A kind of control method of automatic control system, includes the following steps:
S1: carrying out automatically controlling the initialization of system, including to system allowable error parameter and variable resistance it is dynamic
Make rate and carry out parameter setting, and the car body of bullet train is numbered；
S2: the current value of current sensor and each protective grounding point of data collecting card timing acquiring is used；
S3: according to collected current value, carrying out summation process, obtain the electric current total value for flowing through each section car body, and calculating should
When inscribe the standard value of the share current amount that each section vehicle should bear, and each section car body current deviation value is obtained according to it；
S4: judging whether current deviation value meets the requirements, i.e., whether each section car body current deviation value is greater than allowable error ginseng
Number, if obtaining car body then according to the size of each section car body current deviation value and positive and negative and carrying out electric current and redistribute and should adjust
Size of current and current direction, and find the corresponding car body number being related to, S5 entered step, otherwise finishing control, under waiting
Primary current acquisition；
S5: it is corresponded to according to car body number, the size of current of adjustment and current direction and preset speed of actions, adjustment
Variable resistance, and to the current detecting after data processing unit feedback action as a result, return step S4；
The size of current and current direction of adjustment are the size and Orientation of each section car body current deviation value.
Further, in step S3, each calculation formula for saving car body current deviation value are as follows:
ΔIn=In-I'
In formula, Δ InFor each section car body current deviation value, i.e., this when inscribe each vehicle current actual value and share current amount mark
Deviation between quasi- value；InTo flow through the electric current total value on each section car body；I' inscribes the respectively electricity that each section vehicle should bear when being this
The standard value of flow.
Further, this when inscribe the share current amount that each section vehicle should bear standard value calculation formula are as follows:
In formula,The total current value of all car bodies is flowed through for bullet train；N is car body number；N is car body sum.
The invention has the benefit that
A variable resistance is concatenated between (1) two section train body, and in a variable resistance both ends electricity in parallel
Capacitance device can carry out real-time monitoring vehicle, it can be achieved that under different operating conditions and running environment by adjusting the resistance value of variable resistance
The function that body electric current distributes between each section car body effectively limits the shunting that traction current enters car body by protective grounding point
The path mutually circulated between each section car body makes the circulation of each car body that can need to be determined by corresponding size according to allotment
To distribution, solve traction current by protective grounding point enter car body shunting and other Leakage Currents between each car body because
The car body local circulation problem that distribution is uneven and generates, meanwhile, this kind of connection type avoids car body circulation and passes through two vehicle end to end
Protective grounding point the problem of converging again；
(2) capacitive means between car body can guarantee when train is by overvoltage, and surge voltage passes through the low impedance path
It is quickly released between each car body；
(3) it is directly grounded protected mode by using distributed, can not only guarantees that every section car body can be by rail
It is directly connected to realize equipotential, the leakage current of vehicle electronic device and car body induced current can also be made directly to release to rail,
Effectively limit the lifting of car body current potential；
(4) automatic control system real-time monitoring protective grounding point electric current automatically adjusts each workshop by train operation situation
Variable resistance resistance value, real-time monitoring ground connection reflux and car body other leakage, induced current distributed in each workshop, make electric current each
It is evenly distributed between car body, reduces the generation of car body circulation phenomenon, improve practicability.
Detailed description of the invention
Fig. 1 is the novel grounded system structure diagram one of bullet train；
Fig. 2 is the novel grounded system schematic two of bullet train；
Fig. 3 is automatic control system structural block diagram；
Fig. 4 is control method flow chart.
Wherein, 1, contact net；2, bullet train；21, motor-car；22, transformer vehicle；221, tractive transformer；23, pantograph
Device；24, resistance-capacitance type attachment device；25, protective earthing device；26 working earthing devices；3, rail；4, bogie；5, shaft end；
6, shock-absorption air bag；7, current sensor；8, variable resistance.
Specific embodiment
A specific embodiment of the invention is described below, in order to facilitate understanding by those skilled in the art this hair
It is bright, it should be apparent that the present invention is not limited to the ranges of specific embodiment, for those skilled in the art,
As long as various change is in the spirit and scope of the present invention that the attached claims limit and determine, these variations are aobvious and easy
See, all are using the innovation and creation of present inventive concept in the column of protection.
As Fig. 1 and Fig. 2 jointly shown in, a kind of novel grounded system of bullet train, including the contact net being successively electrically connected
1, bullet train 2 and rail 3, bullet train 2 include sequentially connected trailer and motor-car 21, four section car bodies before and after bullet train
About center symmetric setting, bullet train 2 further includes resistance-capacitance type attachment device 24, protective earthing device 25 and working earthing dress
Set 26；
The bonding wire of motor-car 21 and adjacent trailer or motor-car 21 is provided with resistance-capacitance type attachment device 24, bottom end
It is provided with bogie 4, at least provided with protective earthing device 25 all the way between car body and shaft end 5；
Trailer includes train head and centrally located transformer vehicle 22, and transformer vehicle 22 is internally provided with traction
Transformer 221, the primary side neutral point of bottom end is provided with working earthing point, and its top is provided with and is electrically connected with contact net 1
Pantograph device 23；
Working earthing point has been arranged in parallel three tunnel working earthing devices 26, and working earthing device 26 and shaft end 5 are electrically connected.
In the present embodiment, resistance-capacitance type attachment device 24 is the capacitive means and variable resistance 8 being arranged in parallel；
The capacitance value range of capacitive means is the 1 μ F of μ F~10, and the resistance value of variable resistance 8 is less than 0.5 Ω；
Capacitive means between car body can guarantee that when train is by overvoltage, surge voltage is by the low impedance path each
It is quickly released between car body；Variable resistance 8 between car body may be implemented under different operating condition and running environment, can pass through tune
The resistance value of whole variable resistance 8 carrys out the function that real-time monitoring car body electric current distributes between each section car body.Traction can effectively be limited
Back up through the path that the shunting that protective grounding point enters car body is mutually circulated between each section car body, make the circulation of each car body
It can be needed to be oriented distribution by corresponding size according to allotment.Meanwhile this kind of connection type avoids car body circulation and passes through head
The problem of protective grounding point of two vehicle of tail converges again.
In the present embodiment, the bottom end of train head, transformer vehicle 22 and motor-car 21 is respectively provided with there are two bogie 4, is arranged
The bottom end of each bogie 4 of vehicle headstock and motor-car 21 has been arranged in parallel two-way protective earthing device 25, protective earthing device 25
One end far from car body is connect with shaft end 5；
Protective earthing device 25 all the way, and tractive transformer have been arranged in parallel between the car body and shaft end 5 of transformer vehicle 22
Three tunnel working earthing devices 26 are provided between 221 primary side neutral points and carbon brush.
In the present embodiment, working earthing device 26 is what the primary side neutral point of tractive transformer 221 was connect with grounding carbon brush
Conductor, grounding carbon brush and shaft end 5 are electrically connected, and protective earthing device 25 is the connecting wire using direct grounding way, are reduced
The impedance of entire earthed system, largely reduces the amplitude of car body overvoltage surge, is conducive to the drop of car body current potential
It is low.
In the present embodiment, pantograph device 23 includes sequentially connected pantograph mechanical arm and pantograph pan, pantograph
The contact line of slide plate and contact net 11 is electrically connected, and pantograph mechanical arm is fixedly connected with the top of transformer vehicle 22, and with lead
Draw the electric connection of transformer 221.
As shown in figure 3, a kind of automatic control system based on the novel grounded system of bullet train, including data acquisition are single
Member, data processing unit and motor unit, data acquisition unit and motor unit are communicated to connect with data processing unit, from
Autocontrol system real-time monitoring protective grounding point electric current is hindered by the variable resistance that train operation situation automatically adjusts each workshop
Value, the reflux of real-time monitoring ground connection and car body other leakages, induced current distributes in each workshop, keep electric current uniform between each car body
Distribution reduces the generation of car body circulation phenomenon, improves practicability.
In the present embodiment, data acquisition unit includes being set to the current sensor 7 of each protective grounding point and positioned at train
The data collecting card of the control room of headstock, the signal output end of current sensor 7 are connected with the input terminal of data collecting card, data
The output end and data processing unit of capture card communicate to connect；
Motor unit includes the variable resistance for being set to the bonding wire of motor-car 21 and adjacent trailer or motor-car 21
Device 8, variable resistance 8 are connected on bonding wire, and in parallel with the capacitive means of bonding wire are located at；
Data processing unit is located at the control room of train head, and its respectively with the output end of data collecting card and variable
The resistance value control terminal of resistor 8 communicates to connect.
A kind of control method of automatic control system, as shown in figure 4, including the following steps:
S1: carrying out automatically controlling the initialization of system, including to system allowable error parameter and variable resistance it is dynamic
Make rate and carry out parameter setting, and the car body of bullet train is numbered；
S2: the current value of current sensor and each protective grounding point of data collecting card timing acquiring is used；
S3: according to collected current value, carrying out summation process, obtain the electric current total value for flowing through each section car body, and calculating should
When inscribe the standard value of the share current amount that each section vehicle should bear, and each section car body current deviation value is obtained according to it；
S4: judging whether current deviation value meets the requirements, i.e., whether each section car body current deviation value is greater than allowable error ginseng
Number, if obtaining car body then according to the size of each section car body current deviation value and positive and negative and carrying out electric current and redistribute and should adjust
Size of current and current direction, and find the corresponding car body number being related to, S5 entered step, otherwise finishing control, under waiting
Primary current acquisition；
S5: it is corresponded to according to car body number, the size of current of adjustment and current direction and preset speed of actions, adjustment
Variable resistance, and to the current detecting after data processing unit feedback action as a result, return step S4；
The size of current and current direction of adjustment are the size and Orientation of each section car body current deviation value.
In the present embodiment, in step S3, each calculation formula for saving car body current deviation value are as follows:
ΔIn=In-I'
In formula, Δ InFor each section car body current deviation value, i.e., this when inscribe each vehicle current actual value and share current amount mark
Deviation between quasi- value；InTo flow through the electric current total value on each section car body；I' inscribes the respectively electricity that each section vehicle should bear when being this
The standard value of flow.
In the present embodiment, this when inscribe the share current amount that each section vehicle should bear standard value calculation formula are as follows:
In formula,The total current value of all car bodies is flowed through for bullet train 2；N is car body number；N is car body sum.
The present invention proposes a kind of novel grounded system of bullet train, automatic control system and control method, solves existing
The distribution of protective grounding electric current existing for technology is uneven, vehicle car body electric current is excessive end to end and car body overvoltage surge is higher asks
Topic.
Claims (9)
1. a kind of novel grounded system of bullet train, which is characterized in that including be successively electrically connected contact net, bullet train with
And rail, the bullet train include trailer, motor-car, resistance-capacitance type attachment device, protective earthing device and working earthing device；
The bonding wire of the motor-car and adjacent trailer or motor-car is provided with resistance-capacitance type attachment device, and bottom end is respectively provided with
There is bogie, at least provided with protective earthing device all the way between car body and shaft end；
The trailer includes train head and centrally located transformer vehicle, and the transformer vehicle is internally provided with traction
Transformer, the primary side neutral point of bottom end is provided with working earthing point, and its top and contact net are electrically connected；
The working earthing point has been arranged in parallel three tunnel working earthing devices, and the working earthing device and shaft end are electrically connected.
2. the novel grounded system of bullet train according to claim 1, which is characterized in that the resistance-capacitance type attachment device is
The capacitive means and variable resistance being arranged in parallel；
The capacitance value range of the capacitive means is 1 μ of μ F~10 F, and the resistance value of the variable resistance is less than 0.5 Ω.
3. the novel grounded system of bullet train according to claim 1, which is characterized in that the train head, transformer
The bottom end of vehicle and motor-car is respectively provided with there are two bogie, is arranged in parallel two-way between train head and the car body and shaft end of motor-car
Protective earthing device, protective earthing device are connect far from one end of car body with shaft end；
Protective earthing device all the way, and its tractive transformer primary side have been arranged in parallel between the car body and shaft end of the transformer vehicle
Three tunnel working earthing devices are provided between neutral point and shaft end.
4. the novel grounded system of bullet train according to claim 3, which is characterized in that the working earthing device is to lead
Draw the conductor that the primary side neutral point of transformer is connect with grounding carbon brush, the grounding carbon brush and shaft end are electrically connected, the protection
Earthing or grounding means is the connecting wire using direct grounding way.
5. a kind of automatic control system based on any novel grounded system of bullet train of claim 1-4, feature
Be, including data acquisition unit, data processing unit and motor unit, the data acquisition unit and motor unit with
Data processing unit communication connection.
6. automatic control system according to claim 5, which is characterized in that the data acquisition unit includes being set to respectively
The current sensor of protective grounding point and the data collecting card of the control room positioned at train head, the signal of the current sensor
Output end is connected with the input terminal of data collecting card, and the output end and data processing unit of the data collecting card communicate to connect；
The motor unit includes the variable resistance for being set to the bonding wire of motor-car and adjacent trailer or motor-car, institute
It states variable resistance to be connected on bonding wire, and in parallel with the capacitive means of bonding wire are located at；
The data processing unit is located at the control room of train head, and its respectively with the output end of data collecting card and variable
The resistance value control terminal of resistor communicates to connect.
7. a kind of control method based on the automatic control system described in claim 5, which comprises the steps of:
S1: carrying out automatically controlling the initialization of system, the movement speed including allowable error parameter and variable resistance to system
Rate carries out parameter setting, and the car body of bullet train is numbered；
S2: the current value of current sensor and each protective grounding point of data collecting card timing acquiring is used；
S3: according to collected current value, summation process is carried out, the electric current total value for flowing through each section car body is obtained, calculates the moment
Under the standard value of share current amount that should bear of each section vehicle, and each section car body current deviation value is obtained according to it；
S4: judging whether current deviation value meets the requirements, i.e., whether each section car body current deviation value is greater than allowable error parameter, if
It is then to obtain car body according to the size of each section car body current deviation value and positive and negative and carry out electric current to redistribute the electric current that should be adjusted
Size and current direction, and the corresponding car body number being related to is found, S5 is entered step, otherwise finishing control, waited next time electric
Stream acquisition；
S5: according to car body number, the size of current of adjustment and current direction and preset speed of actions, adjustment is corresponding can
Variohm, and to the current detecting after data processing unit feedback action as a result, return step S4；
The size of current and current direction of the adjustment are the size and Orientation of each section car body current deviation value.
8. control method according to claim 7, which is characterized in that each to save car body current deviation value in the step S3
Calculation formula are as follows:
ΔIn=In-I'
In formula, Δ InFor each section car body current deviation value, i.e., this when inscribe each vehicle current actual value and share current amount standard value it
Between deviation；InTo flow through the electric current total value on each section car body；I' inscribes the share current amount that each section vehicle should bear when being this
Standard value.
9. control method according to claim 8, which is characterized in that it is described this when inscribe that each section vehicle should bear divide equally electricity
The calculation formula of the standard value of flow are as follows:
In formula,The total current value of all car bodies is flowed through for bullet train；N is car body number；N is car body sum.
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| CN110606002A (en) * | 2019-09-25 | 2019-12-24 | 西南交通大学 | Work and safety grounding independent distribution method suitable for high-speed train |
| CN110774944A (en) * | 2019-11-07 | 2020-02-11 | 西南交通大学 | Third rail independent grounding system suitable for high-speed train |
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| CN110606002A (en) * | 2019-09-25 | 2019-12-24 | 西南交通大学 | Work and safety grounding independent distribution method suitable for high-speed train |
| CN110774944A (en) * | 2019-11-07 | 2020-02-11 | 西南交通大学 | Third rail independent grounding system suitable for high-speed train |
| CN110949411A (en) * | 2019-11-26 | 2020-04-03 | 中车大连机车车辆有限公司 | Power-concentrated motor train unit and separable linkage joint-control power carriage |
| CN111382509B (en) * | 2020-03-06 | 2022-09-09 | 西南交通大学 | Design and verification method for optimization of train body grounding system of motor train unit |
| CN111382509A (en) * | 2020-03-06 | 2020-07-07 | 西南交通大学 | Design and verification method for optimization of train body grounding system of motor train unit |
| CN111384710A (en) * | 2020-03-07 | 2020-07-07 | 西南交通大学 | Grounding system suitable for urban rail transit |
| CN111347943A (en) * | 2020-04-07 | 2020-06-30 | 中车株洲电力机车有限公司 | Rail transit vehicle grounding system |
| CN111347943B (en) * | 2020-04-07 | 2023-08-08 | 中车株洲电力机车有限公司 | Rail transit vehicle grounding system |
| CN113690639B (en) * | 2020-05-19 | 2022-09-23 | 中车唐山机车车辆有限公司 | Rail train's grounding system and rail train |
| CN113690639A (en) * | 2020-05-19 | 2021-11-23 | 中车唐山机车车辆有限公司 | Rail train's ground system and rail train |
| CN112201973A (en) * | 2020-10-12 | 2021-01-08 | 西南交通大学 | Rail transit grounding system |
| CN112884314A (en) * | 2021-02-06 | 2021-06-01 | 西南交通大学 | Motor train unit protection grounding reflux evaluation and optimization method |
| CN112884314B (en) * | 2021-02-06 | 2021-09-28 | 西南交通大学 | Motor train unit protection grounding reflux evaluation and optimization method |
| CN113120034B (en) * | 2021-04-14 | 2022-03-25 | 西南交通大学 | Rail transit grounding carbon brush abrasion monitoring and self-adaptive control system |
| CN113120034A (en) * | 2021-04-14 | 2021-07-16 | 西南交通大学 | Rail transit grounding carbon brush abrasion monitoring and self-adaptive control system |
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