CN109703418A - The system and method for solving the problems, such as rail potential with energy storage device - Google Patents
The system and method for solving the problems, such as rail potential with energy storage device Download PDFInfo
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- CN109703418A CN109703418A CN201910112968.6A CN201910112968A CN109703418A CN 109703418 A CN109703418 A CN 109703418A CN 201910112968 A CN201910112968 A CN 201910112968A CN 109703418 A CN109703418 A CN 109703418A
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- 238000004146 energy storage Methods 0.000 title claims abstract description 100
- 238000000034 method Methods 0.000 title claims abstract description 20
- 230000005611 electricity Effects 0.000 claims description 6
- 238000004904 shortening Methods 0.000 claims description 5
- 230000003137 locomotive effect Effects 0.000 claims description 4
- 239000003990 capacitor Substances 0.000 claims description 3
- 238000005070 sampling Methods 0.000 claims description 2
- 238000000465 moulding Methods 0.000 claims 1
- 230000007704 transition Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
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Abstract
The invention discloses a kind of system and method for solving the problems, such as rail potential with energy storage device, its system includes energy-storage travelling wave tube, control module, the energy-storage travelling wave tube is equipped with the energy-storage travelling wave tube of access contact net, accesses the energy-storage travelling wave tube of rail, it accesses between the energy-storage travelling wave tube parallel connection access contact net of contact net and rail, it accesses between the energy-storage travelling wave tube parallel connection access rail of rail and the earth, the energy-storage travelling wave tube of the energy-storage travelling wave tube, access rail that access contact net is controlled by control module；Its method comprises the steps of: that the energy-storage travelling wave tube of access contact net discharges when lower than setting value a or higher than setting value b to contact net；The energy-storage travelling wave tube of rail is accessed when being more than setting value c, is charged, after charging, is discharged to contact net.The present invention has solved the problems, such as rail potential and stray electrical current problem fast.
Description
Technical field
The present invention relates to rail traffics, are exactly a kind of system and sides that rail potential is solved the problems, such as with energy storage device
Method.
Background technique
Urban track traffic at present uses DC power-supply system, and passes through rail return current.And due to the longitudinal electrical resistance of rail,
The presence of transition resistance between rail ground, rail potential and stray electrical current are inevitably generated when electric current flows through rail.Machine
Vehicle and rail are with equipotential, and passenger can generate step voltage when getting on or off the bus between locomotive and platform, if rail potential mistake
Height can generate threat to the safety of passenger.
It is respectively provided with side rail wear at each station and parking lot for rail potential problem at present, works as rail potential
When more than setting value, side rail wear locking connects rail and the earth, reduces rail potential.But use such side
Formula has a large amount of reflux and is leaked in the earth, aggravate stray electrical current, generates heavy corrosion to underground metal pipes, reinforcing bar etc..
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of system and sides that rail potential is solved the problems, such as with energy storage device
Method, the system and method solve the problems, such as rail potential and stray electrical current problem.
In order to solve the above technical problems, the present invention uses following technological means:
A kind of system solving the problems, such as rail potential with energy storage device, including energy-storage travelling wave tube, control module, the energy-storage travelling wave tube
The energy-storage travelling wave tube of energy-storage travelling wave tube, access rail equipped with access contact net accesses the energy-storage travelling wave tube parallel connection access contact of contact net
It between net and rail, accesses between the energy-storage travelling wave tube parallel connection access rail of rail and the earth, accesses energy-storage travelling wave tube, the access of net-fault
The energy-storage travelling wave tube of rail is controlled by control module.
Rail longitudinal electrical resistance is big, rail transition resistance is small, excessive traction current is to cause rail potential high and stray electrical
The main reason for stream, for the present invention to reduce traction current, shortening current loop is point of penetration, passes through the storage of setting access contact net
Energy element and the control module for controlling its charge and discharge, access the energy-storage travelling wave tube of rail and control the control module of its charge and discharge, use
Energy storage device solves the problems, such as rail potential, while can effectively administer stray electrical current again.
Further optimal technical scheme is as follows:
The control module is energy management unit.
By the way that energy management unit is arranged, the charge and discharge of energy-storage travelling wave tube are controlled using energy management unit.
The control module of the access rail is equipped with energy management unit, DC/DC converter, switch.
By setting DC/DC converter, switch, circuit is controlled using DC/DC converter, switch.
The energy-storage travelling wave tube is flywheel, super capacitor, any one or two or more combinations in battery.
The energy-storage travelling wave tube is mounted in interval circuit of growing up or let-down stations rail potential is seriously located.
The method for solving the problems, such as rail potential with energy storage device comprising the steps of: access the energy storage of contact net
Element discharges when lower than setting value a or higher than setting value b to contact net；The energy-storage travelling wave tube for accessing rail is being more than setting value c
When, it charges, after charging, discharges to contact net.
The method for solving the problems, such as rail potential with energy storage device, setting value a are set as unloaded network pressure, are used in net
Press fluctuation range bigger and the minimum lower route of network pressure, when network pressure is lower than setting value a, energy-storage travelling wave tube is put to contact net
Electricity supports network pressure to reduce traction current, while shortening current loop, reduces rail potential.
The method for solving the problems, such as rail potential with energy storage device, setting value b are set as energy definite value, are used in net
It presses fluctuation range little and minimum network pressure is close to the route of unloaded network pressure, this energy definite value is that rail potential is caused to be more than country's mark
The critical value of quasi- locomotive energy；When detecting that energy is higher than setting value b, then energy-storage travelling wave tube discharges to contact net, shortens electricity
Road is flowed back to, one part of current is made to return to the cathode of energy storage device, to reduce rail potential.
The method for solving the problems, such as rail potential with energy storage device, the setting value c are set as the state of rail potential
Scale value is lower than state's scale value, and when detecting that rail potential is more than setting value c, energy-storage travelling wave tube is carried out the electric energy on rail is absorbed
Rail potential, is reduced to setting value, energy is discharged on contact net after charging by charging.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the embodiment of the present invention；
Fig. 2 is the block diagram of energy management unit；
Description of symbols: the energy-storage travelling wave tube that 1- access is touched net；The energy-storage travelling wave tube of 2- access rail；3- switch A；4- switch
B。
Specific embodiment
Below with reference to embodiment, the present invention is further illustrated.
Referring to Fig. 1, a kind of system solving the problems, such as rail potential with energy storage device is made of energy-storage travelling wave tube, control module,
Energy-storage travelling wave tube is equipped with the energy-storage travelling wave tube 1 of access net-fault, accesses the energy-storage travelling wave tube 2 of rail, and the energy-storage travelling wave tube 1 for accessing contact net is in parallel
It accesses between contact net and rail, accesses between the access rail in parallel of energy-storage travelling wave tube 2 of rail and the earth, access the energy storage of net-fault
Element 1, the energy-storage travelling wave tube 2 for accessing rail are controlled by control module.
Rail longitudinal electrical resistance is big, rail transition resistance is small, excessive traction current is to cause rail potential high and stray electrical
The main reason for stream, for the present embodiment to reduce traction current, shortening current loop is point of penetration, passes through setting access contact net
Energy-storage travelling wave tube 1 and the control module for controlling its charge and discharge access the energy-storage travelling wave tube 2 of rail and control the control mould of its charge and discharge
Block solves the problems, such as rail potential with energy storage device, while can effectively administer stray electrical current again.
Control module is energy management unit, and referring to fig. 2, input is contact net voltage sample, power samples, rail electricity
Position sampling exports to storage bodies 1 and storage bodies 2 and switch A3, B4 the control function realized to storage bodies charge and discharge.
By the way that energy management unit is arranged, the charge and discharge of energy-storage travelling wave tube are controlled using energy management unit.
The control module for accessing rail is equipped with energy management unit, DC/DC converter, switch.
By setting DC/DC converter, switch, circuit is controlled using DC/DC converter, switch.
Energy-storage travelling wave tube is the combination of flywheel, super capacitor, any one or two kinds or more in battery.
Energy-storage travelling wave tube is mounted in interval circuit of growing up or let-down stations rail potential is seriously located.
The method for solving the problems, such as rail potential with energy storage device comprising the steps of: the energy-storage travelling wave tube 1 for accessing contact net exists
It discharges when lower than setting value a or being higher than setting value b to contact net；The energy-storage travelling wave tube 2 of rail is accessed when being more than setting value c, into
Row charging after charging, is discharged to contact net.
The method for solving the problems, such as rail potential with energy storage device, setting value a are set as unloaded network pressure, are used in net voltage fluctuation
Range is bigger and the minimum lower route of network pressure, and when network pressure is lower than setting value a, energy-storage travelling wave tube discharges to contact net, support
Network pressure shortens current loop to reduce traction current, reduces rail potential.
The method for solving the problems, such as rail potential with energy storage device, setting value b are set as energy definite value, are used in net voltage fluctuation
Range is little and minimum network pressure is close to the route of unloaded network pressure, this energy definite value is that rail potential is caused to be more than the machine of national standard
The critical value of vehicle energy；When detecting that energy is higher than setting value b, then energy-storage travelling wave tube discharges to contact net, shortens current loop,
One part of current is set to return to the cathode of energy storage device, to reduce rail potential.
The method for solving the problems, such as rail potential with energy storage device, setting value c are set as state's scale value of rail potential or lower than states
Scale value, when detecting that rail potential is more than setting value c, energy-storage travelling wave tube charges the electric energy absorbed on rail, rail
Energy is discharged on contact net after charging by potential drop as low as setting value.
Its workflow is as follows: access the energy-storage travelling wave tube of contact net lower than setting value a or when being higher than setting value b to contact
Net electric discharge；The energy-storage travelling wave tube 2 of rail is accessed when being more than setting value c, is charged, after charging, is discharged to contact net.
Setting value a is set as unloaded network pressure, is used in that net voltage fluctuation range is bigger and the minimum lower route of network pressure.Work as net
It forcing down when setting value, energy-storage travelling wave tube discharges to contact net, and support network pressure to reduce traction current, while shortening current loop,
Reduce rail potential.
Setting value b is set as some energy definite value, is used in that net voltage fluctuation range is little and minimum network pressure is close to unloaded network pressure
Route.This energy definite value is that rail potential is caused to be more than the critical value of the locomotive energy of national standard.For example, certain route exists
Rail potential is normal when 3 vehicles start simultaneously, if but 4 start rail potential can be caused abnormal simultaneously, energy definite value is 3 at this time
Vehicle energy required when starting simultaneously.When detecting that energy is greater than the set value, then energy-storage travelling wave tube discharges to contact net, shortens electricity
Road is flowed back to, one part of current is made to return to the cathode of energy storage device, to reduce rail potential.
Setting value c is set as state's scale value of rail potential or lower than state's scale value.When detecting that rail potential is more than setting value, open
A3 closure is closed, switch B4 is disconnected, and energy-storage travelling wave tube charges the electric energy absorbed on rail, and rail potential is reduced to setting
Value；When detecting that charging terminates, switch A3 is disconnected, and energy is boosted to be discharged into and be connect by switch B4 closure, energy-storage travelling wave tube by DC/DC
In net-fault, discharge off switch B4 is disconnected.Switch A3 and switch B4 can not be closed at.On the other hand rail and ground are connected to
Between energy storage device effectively reduce a large amount of stray electrical currents by absorbing the electric energy on rail and flow into the earth.
The beneficial effect of the embodiment of the present invention is: the energy storage device for accessing contact net can effectively reduce traction current and contract
Short current loop is to reduce rail potential；The energy storage device for accessing rail can be always controlled rail potential in national standard range
It is interior, it ensure that the personal safety of passenger, and avoid a large amount of stray electrical current and flow into the earth but be absorbed and utilized by energy storage device.
The foregoing is merely preferably feasible embodiment of the invention, not thereby limiting the scope of the invention,
It is all to change with equivalent structure made by description of the invention and accompanying drawing content, it is intended to be included within the scope of the present invention.
Claims (9)
1. a kind of system for solving the problems, such as rail potential with energy storage device, including energy-storage travelling wave tube, control module, it is characterised in that:
The energy-storage travelling wave tube is equipped with the energy-storage travelling wave tube of access contact net, accesses the energy-storage travelling wave tube of rail, accesses the energy storage member of contact net
Part parallel connection accesses between contact net and rail, accesses between the energy-storage travelling wave tube parallel connection access rail of rail and the earth, access contact
The energy-storage travelling wave tube of net, the energy-storage travelling wave tube for accessing rail are controlled by control module.
2. the system according to claim 1 for solving the problems, such as rail potential with energy storage device, it is characterised in that: the control
Molding block is energy management unit, and input is contact net voltage sample, power samples, rail potential sampling, output to energy storage
Body 1 and storage bodies 2 and switch A3, B4 realize control function.
3. the system according to claim 1 for solving the problems, such as rail potential with energy storage device, it is characterised in that: described connects
The control module for entering rail is equipped with energy management unit, DC/DC converter, switch.
4. the system according to claim 1 for solving the problems, such as rail potential with energy storage device, it is characterised in that: the storage
Can element be flywheel, super capacitor, any one or two or more combinations in battery.
5. the system according to claim 4 for solving the problems, such as rail potential with energy storage device, it is characterised in that: the storage
Energy element is mounted in interval circuit of growing up or let-down stations rail potential is seriously located.
6. the method according to claim 1 for solving the problems, such as rail potential with energy storage device, it is characterised in that comprising following
Step: the energy-storage travelling wave tube for accessing contact net discharges when lower than setting value a or higher than setting value b to contact net；Access rail
Energy-storage travelling wave tube charges when being more than setting value c, after charging, discharges to contact net.
7. the method according to claim 6 for solving the problems, such as rail potential with energy storage device, it is characterised in that: described sets
Definite value a is set as unloaded network pressure, is used in that net voltage fluctuation range is bigger and the minimum lower route of network pressure, when network pressure is lower than setting
When value a, energy-storage travelling wave tube discharges to contact net, supports network pressure to reduce traction current, while shortening current loop, reduces rail electricity
Position.
8. the method according to claim 6 for solving the problems, such as rail potential with energy storage device, it is characterised in that: described sets
Definite value b is set as energy definite value, is used in that net voltage fluctuation range is little and minimum network pressure is close to the route of unloaded network pressure, this energy is fixed
Value is that rail potential is caused to be more than the critical value of the locomotive energy of national standard；When detecting that energy is higher than setting value b, then store up
Energy element discharges to contact net, shortens current loop, one part of current is made to return to the cathode of energy storage device, to reduce rail electricity
Position.
9. the method according to claim 6 for solving the problems, such as rail potential with energy storage device, it is characterised in that: described sets
Definite value c is set as state's scale value of rail potential or lower than state's scale value, when detecting that rail potential is more than setting value c, energy-storage travelling wave tube
The electric energy absorbed on rail is charged, rail potential is reduced to setting value, energy is discharged into contact after charging
On the net.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910112968.6A CN109703418B (en) | 2019-02-13 | 2019-02-13 | System and method for solving potential problem of steel rail by using energy storage device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910112968.6A CN109703418B (en) | 2019-02-13 | 2019-02-13 | System and method for solving potential problem of steel rail by using energy storage device |
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| CN109703418A true CN109703418A (en) | 2019-05-03 |
| CN109703418B CN109703418B (en) | 2024-05-28 |
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| CN113517699A (en) * | 2021-07-28 | 2021-10-19 | 盾石磁能科技有限责任公司 | Voltage supporting method and device for long and large interval of traction network and terminal equipment |
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| CN113517699A (en) * | 2021-07-28 | 2021-10-19 | 盾石磁能科技有限责任公司 | Voltage supporting method and device for long and large interval of traction network and terminal equipment |
| CN113517699B (en) * | 2021-07-28 | 2022-05-10 | 盾石磁能科技有限责任公司 | Voltage supporting method and device for long and large interval of traction network and terminal equipment |
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| CN109703418B (en) | 2024-05-28 |
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