CN108336813A - A kind of electric railway traction power supply system and its control method - Google Patents
A kind of electric railway traction power supply system and its control method Download PDFInfo
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- CN108336813A CN108336813A CN201810134415.6A CN201810134415A CN108336813A CN 108336813 A CN108336813 A CN 108336813A CN 201810134415 A CN201810134415 A CN 201810134415A CN 108336813 A CN108336813 A CN 108336813A
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000004146 energy storage Methods 0.000 claims abstract description 69
- 238000002347 injection Methods 0.000 claims abstract description 11
- 239000007924 injection Substances 0.000 claims abstract description 11
- 238000012423 maintenance Methods 0.000 claims abstract description 9
- 230000003137 locomotive effect Effects 0.000 claims description 22
- 238000001514 detection method Methods 0.000 claims description 4
- 238000000819 phase cycle Methods 0.000 abstract description 6
- 230000001276 controlling effect Effects 0.000 abstract description 3
- 230000001105 regulatory effect Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- ASNHGEVAWNWCRQ-UHFFFAOYSA-N 4-(hydroxymethyl)oxolane-2,3,4-triol Chemical compound OCC1(O)COC(O)C1O ASNHGEVAWNWCRQ-UHFFFAOYSA-N 0.000 description 2
- 239000013598 vector Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000001447 compensatory effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000013024 troubleshooting Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/062—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for AC powered loads
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
- H02J3/48—Controlling the sharing of the in-phase component
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
- H02J3/50—Controlling the sharing of the out-of-phase component
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- Power Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The present invention discloses electric railway traction power supply system and its control method, the system comprises Traction Station transformer and energy-storage units, wherein, the Traction Station transformer first siding ring is connected with power grid, one end of second siding ring is connected in the contact line of Traction Station, the other end is then connected with track, return wire is also connected with track, the energy-storage units include battery, and it is connected to the current transformer on battery, the battery is by being that supply arm injects reactive power and/or active power after current transformer, transformer.The electric railway traction power supply system control method, by the injection for controlling energy-storage units reactive power and active power, traction transformer capacity can not only be reduced, reduce electrical capacity charge, and it can also reduce in the case where reducing electrical network negative phase-sequence electric current or even the power flow regulatings equipment such as SVG, STATCOM can be removed, the integral structure layout for optimizing tractive power supply system, greatly reduces equipment investment and operation maintenance expense.
Description
Technical field
The present invention relates to a kind of electric railway traction power supply system and its control methods, belong to electrical network field.
Background technology
Electric railway has been that freight shipments improve efficient, convenient condition, but in the management system of railway high standard
Under, transformer capacity need to configure larger in Traction Station station, and two supply arms pass through the close of train simultaneously in actual moving process
Degree is not very big, results in the electrical capacity charge costliness that Traction Station transformer capacity utilization rate is relatively low, pays every year, operation maintenance
Cost is larger；Meanwhile the operation of goods train results in current unbalance factor in network system larger (there are negative-sequence currents), humorous
Wave content is higher, a series of more low power quality problems of power factor (PF), to solve the problems, such as this, at present using in contact net upslide
The devices such as SVG, STATCOM, PRC are transported to improve power grid power quality, but this method can only improve power grid power quality, not
Transformer capacity can be reduced simultaneously, alleviate the fluctuation problem of dash current, and occupation area of equipment is larger, operation maintenance cost compared with
Height still has certain limitation.
In addition, in the existing technology of railway network, such as break down, power grid electric energy can not be transported on supply arm in real time
When, power supply is realized without emergency power supply and is supported in short-term, is gained time for technical staff's maintenance.
In view of this, the present inventor studies this, specially develop a kind of electric railway traction power supply system and
Thus its control method, this case generate.
Invention content
The object of the present invention is to provide a kind of electric railway traction power supply system and its control methods, can cut down Traction Station
Transformer capacity improves power grid power quality.
To achieve the goals above, solution of the invention is：
A kind of electric railway traction power supply system, including Traction Station transformer and energy-storage units, wherein the Traction Station
Transformer first siding ring is connected with power grid, and one end of second siding ring is connected in the contact line of Traction Station, the other end then with
Track is connected, and return wire is also connected with track, and the contact line is supply arm, and the contact line, track and return wire formation are led
Draw net, the energy-storage units include battery, and the current transformer being connected on battery, and the battery passes through current transformer, transformer
It is that supply arm injects reactive power and/or active power afterwards.
Preferably, the energy-storage units include battery, and 2 be connected on battery current transformer, the current transformer
Respectively one transformer of connection, the battery are respectively that two supply arms inject reactive power by 2 current transformers, 2 transformers
And/or active power.
Preferably, the energy-storage units include battery, and the PCS current transformers being connected on battery, the PCS unsteady flows
Device connects transformer, and the battery is respectively two supply arms injection reactive powers by PCS current transformers, transformer and/or has
Work(power.
Preferably, the Traction Station transformer uses the transformer of VX wiring.
Preferably, the tractor transformer uses the transformer of Scott wiring.
Above-mentioned electric railway traction power supply system is injected reactive power and active power by introducing energy-storage units
To among Traction networks, reduces the size of electrical network negative phase-sequence electric current while providing motive power for train, realize Traction Station transformer
The reduction of capacity improves power grid power quality.
A kind of electric railway traction power supply system control method, includes the following steps：
Working condition judges and operating mode identification：If off working state, then fault distinguishing and maintenance are carried out, if work
Make state, then carries out lower sequence step after operating mode identification；
Two supply arms cross vehicle pattern simultaneously：When detecting two supply arms while crossing vehicle, power grid passes through Traction Station transformer
For the locomotive power supply on two supply arms, at the same time, current transformer carries out coordination control according to the traffic order received, to battery
System；
Vehicle pattern is crossed in supply arm side：When detecting that supply arm only has side to cross vehicle, supply arm of the other side without vehicle is logical
The current transformer of energy-storage units is crossed to the active power for having half needed for vehicle supply arm injection locomotive, energy-storage units are then ordered according to scheduling
It enables, with Traction Station transformer cooperation, battery to there is vehicle supply arm to inject active power, does not only inject reactive power；
Supply arm is without vehicle pattern excessively：When detect supply arm without train by when, Traction Station transformer passes through two supply arms
Active power is injected to energy-storage units, energy-storage units then charge according to traffic order, and inject idle work(to two supply arms
Rate；
Traction Station transformer fault pattern：When detecting that power grid electric energy can not be transferred to power supply by Traction Station transformer fault
When on arm, energy-storage units provide motive power according to dispatch command, to supply arm, while injecting reactive power, meet locomotive
Active power and reactive power demand.
Preferably, two supply arms simultaneously cross vehicle pattern when, when detect battery meet
SOC≥SOCm_min (1)
In formula：SOC is the state-of-charge of battery, SOCm_minFor the minimum value of battery charge state.
Energy-storage units and Traction Station transformer cooperation at this time, cut down the capacity of the Traction Station transformer, reduce net
The degree of unbalancedness of side electric current, the specific active power for injecting two supply arms and reactive power are
In formula：Pbattery1Arm, Pset1Arm and Qbattery1Arm, Qset1Arm is respectively being actually implanted into for 1 active power of supply arm
Value, the setting value of active power are actually implanted into value, the setting value of reactive power with 1 reactive power of supply arm；Pbattery2Arm,
Pset2Arm and Qbattery2Arm, Qset2Arm is respectively that 2 active power of supply arm is actually implanted into value, the setting value of active power and confession
2 reactive power of electric arm is actually implanted into value, the setting value of reactive power.
When detect energy-storage units meet
SOC<SOCm_min (3)
Energy-storage units do not inject active power to two supply arms at this time, only inject reactive power, reduce current on line side not
The degree of balance improves power quality, and since two supply arms are only powered by Traction Station transformer to it from power grid, locomotive need to subtract at this time
Speed operation, reduces dash current, to meet output power of the Traction networks to it；The active power and nothing that energy-storage units specifically provide
Work(power is
Preferably, when vehicle pattern is crossed in supply arm side, active power and reactive power that energy-storage units are specifically sent out are
Preferably, supply arm without cross vehicle pattern when, when detect battery meet
SOC≤SOCm_max (6)
In formula：SOCm_maxFor the maximum value of battery charge state；
Energy-storage units are charged by the active power of two supply arms consumption power grid at this time, and it is true to be simultaneously emitted by reactive power
Protect the power quality of power grid；Specifically performance number is
When detect battery meet
SOC>SOCm_max (8)
Energy-storage units charging complete at this time not in the active power of consumption power grid, while not injected to supply arm idle yet
Power, specially
Preferably, when Traction Station transformer fault pattern, when detection battery meets
SOC≥SOCm_min (10)
Energy-storage units provide the support in short-term of active power and reactive power for locomotive according to instruction at this time, are arranged for failure
Except gaining time, concrete numerical value is
When detection battery meets
SOC<SOCm_min (12)
The state-of-charge of battery has reached lower limit at this time, can not continue to provide motive power and reactive power note to locomotive
Enter, locomotive is stopped transport；The specific magnitude of power of energy-storage units is
Above-mentioned electric railway traction power supply system control method, by controlling energy-storage units reactive power and active power
Injection, can not only reduce traction transformer capacity, reduce electrical capacity charge, and in the case where reducing electrical network negative phase-sequence electric current
It can also reduce or even the power flow regulatings equipment such as SVG, STATCOM can be removed, optimize the overall structure cloth of tractive power supply system
Office, greatly reduces equipment investment and operation maintenance expense.
The present invention is described in further detail below in conjunction with drawings and the specific embodiments.
Description of the drawings
Fig. 1 is the electric railway traction power supply system topology diagram of embodiment 1；
Fig. 2 is the electric railway traction power supply system topology diagram of embodiment 2；
Fig. 3 is the electric railway traction power supply system topology diagram of embodiment 3；
Fig. 4 is the electric railway traction power supply system topology diagram of embodiment 4；
Fig. 5 is the electric railway traction power supply system control flow chart of embodiment 5；
Fig. 6 is that active power and reactive power are injected the Current Voltage vectogram after supply arm by 5 energy-storage units of embodiment.
Specific implementation mode
Embodiment 1
A kind of electric railway traction power supply system includes Traction Station transformer 11 and energy storage in Traction Station 1
Unit 2, the Traction Station transformer 11 described in the present embodiment use the VX modes of connection, as shown in Figure 1, wherein the Traction Station becomes
11 first siding ring of depressor is connected with 220kv power grids, and one end of second siding ring is connected in the contact line of Traction Station (T), separately
One end is then connected with track (R), return wire (N), and the contact line (T) and track (R) form supply arm 4, wherein the contact
Line (T) is power supply upper arm, and track (R) is power supply underarm.The contact line (T), track (R) and return wire (N) form DN tractions
Net.The energy-storage units 2 include battery 21, and 2 current transformers 21 being connected on battery 21, the current transformer 21 respectively pass through
One single-phase transformer 3 is connected with supply arm, and the battery 21 is respectively two by 2 current transformers, 22,2 single-phase transformers 3
A supply arm 4 injects reactive power and/or active power.
Above-mentioned electric railway traction power supply system is injected reactive power and active power by introducing energy-storage units 2
To among Traction networks, reduces the size of electrical network negative phase-sequence electric current while providing motive power for train, realize Traction Station transformer
The reduction of capacity improves the utilization rate of transformer, improves power grid power quality, reduces electrical capacity charge and equipment operation dimension
Protect cost.
Embodiment 2
A kind of electric railway traction power supply system includes Traction Station transformer 11 and energy storage in Traction Station 1
Unit 2, the Traction Station transformer 11 described in the present embodiment use the VX modes of connection, as shown in Figure 1, wherein the Traction Station becomes
11 first siding ring of depressor is connected with 220kv power grids, and one end of second siding ring is connected in the contact line of Traction Station (T), separately
One end is then connected with track (R), return wire (N), and the contact line (T) and track (R) form supply arm 4, wherein the contact
Line (T) is power supply upper arm, and track (R) is power supply underarm.The contact line (T), track (R) and return wire (N) form DN tractions
Net.The energy-storage units 2 include battery 21, and the PCS current transformers 22 being connected on battery 21, the PCS current transformers 22 are logical
It crosses transformer 3 with supply arm 4 to be connected, the battery 21 is respectively that two supply arms 4 inject by PCS current transformers 22, transformer 3
Reactive power and/or active power.
Above-mentioned electric railway traction power supply system is injected reactive power and active power by introducing energy-storage units 2
To among Traction networks, reduces the size of electrical network negative phase-sequence electric current while providing motive power for train, realize Traction Station transformer
The reduction of capacity improves the utilization rate of transformer, improves power grid power quality, reduces electrical capacity charge and equipment operation dimension
Protect cost.
Embodiment 3
A kind of electric railway traction power supply system, as shown in figure 3, the tractor transformer 11 uses Scott wiring
Mode, remaining structure are substantially the same manner as Example 1.
Embodiment 4
A kind of electric railway traction power supply system, as shown in figure 4, the tractor transformer 11 uses Scott wiring
Mode, remaining structure are substantially the same manner as Example 2.
Embodiment 5
A kind of electric railway traction power supply system control method, as shown in figure 5, including the following steps：
Step 101：Electric railway traction power supply system working condition judges and operating mode identification, if system is non-work
Make state, then carry out fault distinguishing and maintenance, if being in working condition, lower sequence step is carried out after operating mode identification；
Step 102, two supply arms cross vehicle pattern simultaneously：When master control system detects two supply arms 4 while crossing vehicle,
220kV power grids are by the locomotive power supply that Traction Station transformer 11 is on two supply arms 4, and at the same time, current transformer 22 is according to receiving
To the traffic order assigned of master control system, coordination control is carried out to battery 21.When detect battery meet
SOC≥SOCm_min (1)
In formula：SOC is the state-of-charge of battery, SOCm_minFor the minimum value of battery charge state.
Energy-storage units 2 and 11 cooperation of Traction Station transformer at this time, cut down the capacity of the transformer 11, reduce net side
The degree of unbalancedness of electric current, the specific active power for injecting two supply arms 4 and reactive power are
In formula：Pbattery1Arm, Pset1Arm and Qbattery1Arm, Qset1Arm is respectively being actually implanted into for 1 active power of supply arm
Value, the setting value of active power are actually implanted into value, the setting value of reactive power with 1 reactive power of supply arm；Pbattery2Arm,
Pset2Arm and Qbattery2Arm, Qset2Arm is respectively that 2 active power of supply arm is actually implanted into value, the setting value of active power and confession
2 reactive power of electric arm is actually implanted into value, the setting value of reactive power.
When detect energy-storage units meet
SOC<SOCm_min (3)
Energy-storage units 2 do not inject active power to two supply arms 4 at this time, only inject reactive power, reduce current on line side
Degree of unbalancedness improves power quality, since two supply arms 4 are only powered by Traction Station transformer 11 to it from power grid, this opportunity
Vehicle runs slowly, and reduces dash current, meets output power of the Traction networks to it.The active power that energy-storage units 2 specifically provide
And reactive power is
Step 103, vehicle pattern is crossed in supply arm side：It is another when master control system detects that supply arm 4 only has side to cross vehicle
Supply arm of the side without vehicle by the current transformers 21 of energy-storage units 2 to the active power for thering is vehicle supply arm 4 to inject half needed for locomotive,
Energy-storage units 2 are then according to the traffic order of master control system, and 11 cooperation of Traction Station transformer, and battery 21 is not to there is vehicle power supply
Arm injects active power, only injects reactive power, reduces the degree of unbalancedness of grid side electric current, improves its power quality.Energy storage list
First 2 active power specifically sent out and reactive power are
Step 104, supply arm is without vehicle pattern excessively：When system detectio to supply arm without train by when, Traction Station transformer
11 inject active power by two supply arms 4 to energy-storage units 2, and energy-storage units 2 are then carried out according to the traffic order that master control is assigned
Charging, and reactive power is injected to two supply arms 4, reduce the degree of unbalancedness of grid side electric current, ensures power quality.When system is examined
Measure power battery satisfaction
SOC≤SOCm_max (6)
In formula：SOCm_maxFor the maximum value of battery charge state.
Energy-storage units 2 are charged by the active power of two supply arms consumption power grid at this time, are simultaneously emitted by reactive power
Ensure the power quality of power grid.Specifically performance number is
When system detectio to power battery meets
SOC>SOCm_max (8)
2 charging complete of energy-storage units at this time not in the active power of consumption power grid, while also not injecting nothing to supply arm 4
Work(power, concrete condition are
Step 105, Traction Station transformer fault pattern：When master control system detects that system Traction Station transformer fault can not
When power grid electric energy is transferred on supply arm 4, the dispatch command that energy-storage units 2 are assigned according to system provides power to supply arm 4
Support, while reactive power is injected, meet the active power and reactive power demand of locomotive, locomotive speed-limiting is run at this time, is reduced
Dash current, it is ensured that technical staff's rapidly removing faults are convenient in support of the energy-storage units 2 to locomotive, restore tractive power supply system
Normal power supply.When system detectio power battery meets
SOC≥SOCm_min (10)
Energy-storage units 2 provide the support in short-term of active power and reactive power for locomotive according to master control dispatch command at this time,
It gains time for troubleshooting, concrete numerical value is
When system detectio power battery meets
SOC<SOCm_min (12)
The state-of-charge of power battery has reached lower limit at this time, can not continue to provide motive power and reactive power to locomotive
Injection, locomotive are stopped transport.2 specific magnitude of power of energy-storage units is
Fig. 6 is that active power and reactive power are injected the Current Voltage vectogram after supply arm 4 by energy-storage units 2.Due to
Tractive transformer VX wiring is similar with Scott wiring Current Voltage vectors, and compensatory michanism is consistent, therefore the present embodiment is only to using
The traction of VX wiring becomes the Current Voltage vector after energy-storage units compensate and is specifically addressed.
Each variable is specially in Fig. 4：
WithThe respectively phase voltage and phase current of 220kV grid sides；
For the line voltage of 220kV grid sides；
Supply arm in voltage, supply arm 2 respectively in Traction networks in supply arm 1 between supply arm and railway
Voltage between railway；
The transformer pair of electric current and 2 side of supply arm respectively in the transformer secondary winding of 1 side of supply arm
Electric current in the winding of side；
Train load current respectively on supply arm 1 and the train load current on supply arm 2；
Electric current respectively on energy-storage system injection supply arm 1 is injected with energy-storage system on supply arm 2
Electric current；
RespectivelyActive component and reactive component；
RespectivelyActive component and reactive component；
θ is the power factor angle of 220kV grid sides.
Now enable
Therefore have
By calculating and deriving, when grid side non-negative sequence current (Fig. 4 is ideal operating mode, can be existed under actual motion state,
Negative sequence component can only be reduced), that is, meet
Become the secondary winding current i using VX connection types at this point for tractionabWith ibcIt must satisfy following relationship
In formula：K is the no-load voltage ratio of Traction Station transformer.
According to the load current of two supply arm trainsWithHave
And because
AndFall behind respectivelyAngle be respectively 0 ° and -90 °,Fall behind respectivelyAngle
Degree is respectively 0 ° and 90 °, therefore is had
By analyze above it is found that in existing electric railway system introduce energy-storage units 2, can not only reduce Traction Station
The capacity of transformer saves electrical capacity charge, but also can cut down the negative sequence component of grid side electric current, improves power quality.
Electric railway traction power supply system control method described in the present embodiment, by controlling 2 idle work(of energy-storage units
The injection of rate and active power can not only reduce traction transformer capacity, reduce electrical capacity charge, and reducing electrical network negative phase-sequence
It can also reduce or even can remove the power flow regulatings equipment such as SVG, STATCOM in the case of electric current, optimize tractive power supply system
Integral structure layout, greatly reduce equipment investment and operation maintenance expense.In addition, also having the advantages that following several：
1) when power grid electric energy can not inject on supply arm under fault condition, energy-storage units can prop up locomotive in short-term
Support, ensure that the operation of the high reliability, high stability, high security of railway network；
2) in Traction Station or contact net system reasonable disposition energy storage, it is possible to reduce traction substation quantity increases contact net
Power supply distance improves power supply quality；
3) in the area that power grid is weak, scene is resourceful, wind, light, storage technology can be used, build clean energy resource power supply
Traction Station is reduced to the power grid construction expense of power supply for locomotive station.
The product form and style of above-described embodiment and schema and the non-limiting present invention, any technical field it is common
The appropriate changes or modifications that technical staff does it all should be regarded as the patent category for not departing from the present invention.
Claims (10)
1. a kind of electric railway traction power supply system, which is characterized in that including Traction Station transformer and energy-storage units, wherein
The Traction Station transformer first siding ring is connected with power grid, and one end of second siding ring is connected in the contact line of Traction Station,
The other end is then connected with track, and return wire is also connected with track, the contact line be supply arm, the contact line, track and return
Streamline forms Traction networks, and the energy-storage units include battery, and the current transformer being connected on battery, and the battery passes through unsteady flow
After device, transformer reactive power and/or active power are injected for supply arm.
2. a kind of electric railway traction power supply system as described in claim 1, which is characterized in that the energy-storage units include
Battery, and 2 current transformers being connected on battery, respectively one transformer of connection, the battery pass through 2 changes to the current transformer
Stream device, 2 transformers are respectively two supply arm injection reactive powers and/or active power.
3. a kind of electric railway traction power supply system as described in claim 1, which is characterized in that the energy-storage units include
Battery, and the PCS current transformers that are connected on battery, the PCS current transformers connect a transformer, and the battery passes through PCS
Current transformer, transformer are respectively two supply arm injection reactive powers and/or active power.
4. a kind of electric railway traction power supply system as described in claim 1, which is characterized in that the Traction Station transformer
Using the transformer of VX wiring.
5. a kind of electric railway traction power supply system as described in claim 1, which is characterized in that the tractor transformer
Using the transformer of Scott wiring.
6. a kind of electric railway traction power supply system control method, it is characterised in that including including the following steps：
Working condition judges and operating mode identification：If off working state, then fault distinguishing and maintenance are carried out, if work shape
State then carries out lower sequence step after operating mode identification；
Two supply arms cross vehicle pattern simultaneously：When detecting two supply arms while crossing vehicle, power grid is two by Traction Station transformer
Locomotive power supply on supply arm, at the same time, current transformer carry out coordination control according to the traffic order received, to battery；
Vehicle pattern is crossed in supply arm side：When detecting that supply arm only has side to cross vehicle, supply arm of the other side without vehicle passes through storage
Can unit current transformer to the active power for having half needed for vehicle supply arm injection locomotive, energy-storage units then according to traffic order,
With Traction Station transformer cooperation, battery to there is vehicle supply arm to inject active power, does not only inject reactive power；
Supply arm is without vehicle pattern excessively：When detect supply arm without train by when, Traction Station transformer is by two supply arms to storage
Energy unit injects active power, and energy-storage units then charge according to traffic order, and injects reactive power to two supply arms；
Traction Station transformer fault pattern：When detecting that power grid electric energy can not be transferred on supply arm by Traction Station transformer fault
When, energy-storage units provide motive power according to dispatch command, to supply arm, while injecting reactive power, meet the active of locomotive
Power and reactive power demand.
7. a kind of electric railway traction power supply system control method as claimed in claim 6, which is characterized in that
Two supply arms simultaneously cross vehicle pattern when, when detect battery meet
SOC≥SOCm_min (1)
In formula：SOC is the state-of-charge of battery, SOCm_minFor the minimum value of battery charge state；
Energy-storage units and Traction Station transformer cooperation, the specific active power for injecting two supply arms and reactive power are
In formula：Pbattery1Arm, Pset1Arm and Qbattery1Arm, Qset1Arm is respectively being actually implanted into value, having for 1 active power of supply arm
The setting value of work(power is actually implanted into value, the setting value of reactive power with 1 reactive power of supply arm；Pbattery2Arm, Pset2Arm
With Qbattery2Arm, Qset2Arm is respectively that 2 active power of supply arm is actually implanted into value, the setting value of active power and supply arm 2
Reactive power is actually implanted into value, the setting value of reactive power；
When detect energy-storage units meet
SOC<SOCm_min (3)
Energy-storage units do not inject active power to two supply arms, only inject reactive power, the wattful power that energy-storage units specifically provide
Rate and reactive power are
8. a kind of electric railway traction power supply system control method as claimed in claim 6, which is characterized in that supply arm one
When vehicle pattern is crossed in side, active power and reactive power that energy-storage units are specifically sent out are
9. a kind of electric railway traction power supply system control method as claimed in claim 6, which is characterized in that supply arm without
When crossing vehicle pattern, when detect battery meet
SOC≤SOCm_max (6)
In formula：SOCm_maxFor the maximum value of battery charge state；
The active power that energy-storage units dissolve power grid by two supply arms charges, and being simultaneously emitted by reactive power ensures power grid
Power quality；Specifically performance number is
When detect battery meet
SOC>SOCm_max (8)
Energy-storage units charging complete at this time does not dissolve the active power of power grid, while not injecting reactive power, tool to supply arm yet
Body is
10. a kind of electric railway traction power supply system control method as claimed in claim 6, which is characterized in that
When Traction Station transformer fault pattern, when detection battery meets
SOC≥SOCm_min (10)
Energy-storage units provide the support in short-term of active power and reactive power for locomotive according to instruction, and concrete numerical value is
When detection battery meets
SOC<SOCm_min (12)
The state-of-charge of battery has reached lower limit at this time, can not continue to provide motive power and reactive power injection, machine to locomotive
Vehicle is stopped transport；The specific magnitude of power of energy-storage units is
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810134415.6A CN108336813B (en) | 2018-02-09 | 2018-02-09 | Electrified railway traction power supply system and control method thereof |
Applications Claiming Priority (1)
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109687484A (en) * | 2019-01-22 | 2019-04-26 | 西南交通大学 | A kind of electric railway external electrical network access scheme optimum design method |
| CN111016742A (en) * | 2019-12-31 | 2020-04-17 | 青海能高新能源有限公司 | Electrified railway traction power supply system and method based on hybrid energy storage |
| CN111137180A (en) * | 2019-12-31 | 2020-05-12 | 青海能高新能源有限公司微电网储能技术分公司 | Traction power supply system and method for electrified railway |
| CN111864774A (en) * | 2020-08-10 | 2020-10-30 | 西南交通大学 | Peak clipping and valley filling control method for in-phase hybrid energy storage power supply structure of electrified railway |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103840450A (en) * | 2014-01-03 | 2014-06-04 | 南车株洲电力机车研究所有限公司 | Electric energy regulation device and method for electrified railways |
| CN103840477A (en) * | 2014-01-03 | 2014-06-04 | 南车株洲电力机车研究所有限公司 | Electrified railway traction power supply and energy storage device and method thereof |
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| CN103840450A (en) * | 2014-01-03 | 2014-06-04 | 南车株洲电力机车研究所有限公司 | Electric energy regulation device and method for electrified railways |
| CN103840477A (en) * | 2014-01-03 | 2014-06-04 | 南车株洲电力机车研究所有限公司 | Electrified railway traction power supply and energy storage device and method thereof |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109687484A (en) * | 2019-01-22 | 2019-04-26 | 西南交通大学 | A kind of electric railway external electrical network access scheme optimum design method |
| CN111016742A (en) * | 2019-12-31 | 2020-04-17 | 青海能高新能源有限公司 | Electrified railway traction power supply system and method based on hybrid energy storage |
| CN111137180A (en) * | 2019-12-31 | 2020-05-12 | 青海能高新能源有限公司微电网储能技术分公司 | Traction power supply system and method for electrified railway |
| CN111016742B (en) * | 2019-12-31 | 2024-05-10 | 青海能高新能源有限公司 | Electrified railway traction power supply system and method based on hybrid energy storage |
| CN111137180B (en) * | 2019-12-31 | 2024-05-28 | 青海能高新能源有限公司微电网储能技术分公司 | Electrified railway traction power supply system and method |
| CN111864774A (en) * | 2020-08-10 | 2020-10-30 | 西南交通大学 | Peak clipping and valley filling control method for in-phase hybrid energy storage power supply structure of electrified railway |
| CN111864774B (en) * | 2020-08-10 | 2022-06-24 | 西南交通大学 | Peak clipping and valley filling control method for in-phase hybrid energy storage power supply structure of electrified railway |
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| CN108336813B (en) | 2023-11-21 |
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