CN109687503A - The isolated network ferroelectric power supply system and method for supplying power to provided multiple forms of energy to complement each other based on battery energy storage - Google Patents
The isolated network ferroelectric power supply system and method for supplying power to provided multiple forms of energy to complement each other based on battery energy storage Download PDFInfo
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- 238000004146 energy storage Methods 0.000 title claims abstract description 135
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- 238000000034 method Methods 0.000 title claims abstract description 24
- 230000003137 locomotive effect Effects 0.000 claims abstract description 152
- 238000010248 power generation Methods 0.000 claims abstract description 70
- 230000005611 electricity Effects 0.000 claims abstract description 21
- 238000009825 accumulation Methods 0.000 claims abstract description 10
- 230000002159 abnormal effect Effects 0.000 claims description 13
- 238000012544 monitoring process Methods 0.000 claims description 9
- 238000002485 combustion reaction Methods 0.000 claims description 6
- 238000003491 array Methods 0.000 claims description 5
- 238000012423 maintenance Methods 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 230000005622 photoelectricity Effects 0.000 claims description 3
- 230000009466 transformation Effects 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 8
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
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Classifications
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- H02J3/383—
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
- B60M3/00—Feeding power to supply lines in contact with collector on vehicles; Arrangements for consuming regenerative power
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- H02J3/386—
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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
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/76—Power conversion electric or electronic aspects
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The present invention discloses a kind of isolated network ferroelectric power supply system provided multiple forms of energy to complement each other based on battery energy storage and method of supplying power to, the power supply system includes photovoltaic generation unit, wind power generation unit, energy storage locomotive power supply unit and tractive transformer, wherein, the photovoltaic generation unit, wind power generation unit, energy storage locomotive power supply unit come together on ac bus or DC bus, it is the charging of energy storage locomotive power supply unit that photovoltaic generation unit and wind power generation unit pass through low current jointly, and ac bus is railway network power supply by tractive transformer；Electric energy on DC bus comes together on ac bus after being changed into alternating current by energy accumulation current converter, is then railway network power supply by tractive transformer.Above-mentioned isolated network ferroelectric power supply system and method for supplying power to can save the annual electricity charge, engineering construction cost, equipment initial outlay and later period O&M cost while increasing railway network power supply reliability.
Description
Technical field
The present invention relates to a kind of isolated network ferroelectric power supply system provided multiple forms of energy to complement each other based on battery energy storage and method of supplying power to, belong to iron
Road network field.
Background technique
Electric railway system has become cargo transport at present, people go on a journey one of indispensable mode, gives China's warp
Deep foundation has been established in Ji development.Electrified railway power supply system mainly uses the power supply mode of V/V wiring as shown in Figure 1
(mode one), or the power supply mode (mode two) using Scott wiring as shown in Figure 1.The main problems are as follows:
1) power supply of railroad train is completely dependent on power grid, once power grid or traction substation break down, will lead to locomotive
It stops transport, seriously affects the safety and reliability of locomotive operation；
2) traction substation is mainly by 220kV transmission line of electricity, tractive transformer, high-tension switch cabinet and second protection equipment group
At, and all devices need double set redundant configurations, engineering construction cost is very high, spends the time very long.
3) high-power, asymmetric, impact railway load, seriously affect 220kV high pressure network electric energy quality, power because
Element, and increase peak load regulation network pressure；To solve power quality problem, and network interface need to be arranged SVG, integrated power flow controller etc. and set
It is standby, construction cost and O&M cost are increased indirectly；The supply arm train of every 20~30km is not very intensive reality,
Cause numerous traction tractive transformer utilization rates very low, needs to pay high electrical capacity charge every year.
In view of this, the present inventor studies this, a kind of orphan to provide multiple forms of energy to complement each other based on battery energy storage is specially developed
Thus net ferroelectric power supply system and method for supplying power to, this case generate.
Summary of the invention
The object of the present invention is to provide a kind of isolated network ferroelectric power supply system provided multiple forms of energy to complement each other based on battery energy storage and suppliers of electricity
Method can save the annual electricity charge, engineering construction cost, equipment initial outlay and later period while increasing railway network power supply reliability
O&M cost.
To achieve the goals above, solution of the invention is:
A kind of isolated network ferroelectric power supply system provided multiple forms of energy to complement each other based on battery energy storage, including photovoltaic generation unit, wind-power electricity generation
Unit, energy storage locomotive power supply unit and tractive transformer, wherein the photovoltaic generation unit, wind power generation unit, energy storage locomotive
Power supply unit comes together on ac bus or DC bus, and photovoltaic generation unit is jointly by low current with wind power generation unit
The charging of energy storage locomotive power supply unit, ac bus are railway network power supply by tractive transformer；Electric energy on DC bus passes through
Energy accumulation current converter comes together on ac bus after being changed into alternating current, is then railway network power supply by tractive transformer.
Preferably, the isolated network ferroelectric power supply system provided multiple forms of energy to complement each other based on battery energy storage further includes for the confession of energy storage locomotive
The standby emergency power supply unit of electric unit charging.Standby emergency power supply unit is in the case where calm, unglazed etc. extremely special
The charging of energy storage locomotive power supply unit, guarantees the reliability of locomotive power supply.
Preferably, the photovoltaic generation unit includes multiple photovoltaic arrays being connected in parallel on ac bus, the photovoltaic
Array is connected by photovoltaic DC-to-AC converter with ac bus.
Preferably, the photovoltaic generation unit includes multiple photovoltaic arrays for being connected in parallel on DC bus.
Preferably, the wind power generation unit includes multiple wind-driven generators being connected in parallel on ac bus.
Preferably, the wind power generation unit includes multiple wind-driven generators being connected in parallel on DC bus, the wind
Power generator is connected by AC/DC conversion module with DC bus.
Preferably, the standby emergency power supply unit includes the gas turbine of multiple parallel connections, gas turbine with exchange mother
Line is connected, and charges for locomotive power supply unit.
Method of supplying power to based on the isolated network ferroelectric power supply system that battery energy storage is provided multiple forms of energy to complement each other, includes the following steps:
Working condition judgement 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；
Railway network contact line has locomotive to pass through mode: having locomotive to pass through when detecting on contact net, energy storage locomotive supplies at this time
Electric unit battery and wind power generation unit, photovoltaic generation unit are locomotive load power supply jointly, meet its workload demand；Such as traction
Transformer breaks down, and electric energy can not be transferred to locomotive, at this point, the section is temporarily stopped transport, tractive transformer carries out trouble hunting,
To avoid energy waste, wind power generation unit and photovoltaic generation unit for the charging of energy storage locomotive power supply unit.
Railway network contact line passes through mode without locomotive: passing through on contact net without locomotive when detecting, at this time wind-power electricity generation list
Member, photovoltaic generation unit are that energy storage locomotive power supply unit carries out low current equalizaing charge in real time, and energy storage locomotive power supply unit then converges
Collect wind, photoelectricity energy, to meet electric energy supply when locomotive passes through.
Preferably, contact line has locomotive by mode, when the system that monitors meets
By formula (1) it is found that PWind energy is usedIt can provide to be removed in wind power generation unit since the abnormal causes such as failure are remaining
The wind-driven generator of function power, PLuminous energy is usedIt can provide wattful power since the abnormal causes such as failure are remaining to remove in photovoltaic generation unit
The photovoltaic array of rate, PEnergy storage is putTo be removed in energy storage locomotive power supply unit since failure, SOC are unsatisfactory for etc. that abnormal causes are remaining to be mentioned
For the energy-storage units of active power.
Wind power generation unit and photovoltaic generation unit provide the maximum power and energy that can be provided, energy storage locomotive power supply at this time
Unit then provides remainder power and energy needed for locomotive, and energy accumulation current converter (PCS) meets reactive power needed for system, specific value
For
By formula (2) it is found that PWind、PLight、PStorage、PCombustionRespectively wind power generation unit, photovoltaic generation unit, energy storage locomotive power supply
Unit and standby emergency power supply unit reality output active power, PLocomotiveFor active power needed for locomotive, QCurrent transformerWith QsetRespectively
Reactive power needed for energy accumulation current converter (PCS) reality output reactive power and system.
When the system that monitors meets
By formula (3) it is found that PEnergy storage is filledFor removed in energy storage locomotive power supply unit due to failure, SOC be unsatisfactory for etc. it is abnormal former
Because of the remaining energy-storage units that can be charged.
The section locomotive is stopped transport at this time, and tractive transformer carries out trouble hunting, wind power generation unit and photovoltaic generation unit
Charge power needed for then providing energy storage locomotive power supply unit, extra electric energy are discarded by abandonment, abandoning light.Specifically performance number is
When the system that monitors meets
The section locomotive is stopped transport at this time, and tractive transformer carries out trouble hunting, wind power generation unit and photovoltaic generation unit
Then low current equalizaing charge is carried out for energy storage locomotive power supply unit.Specifically performance number is
When the system that monitors meets
There is formula (7) it is found that PCombustion can be usedIt can be mentioned to be removed in standby emergency power supply unit since the abnormal causes such as failure are remaining
For the gas turbine of active power.
At this time wind power generation unit, photovoltaic generation unit and energy storage locomotive power supply unit provide the maximum power that can be provided and
Energy, standby emergency unit then provide remaining power and energy, specific value needed for locomotive and are
When the system that monitors meets
Wind power generation unit, photovoltaic generation unit, energy storage locomotive power supply unit and standby emergency unit provide maximum at this time
The power and energy that can be provided, locomotive speed-limiting operation, specific value are
When the system that monitors meets
The section locomotive is stopped transport at this time, and tractive transformer carries out trouble hunting, wind power generation unit and photovoltaic generation unit
Charge power needed for then providing energy storage locomotive power supply unit, extra electric energy are discarded by abandonment, abandoning light.Specifically performance number is
When the system that monitors meets
The section locomotive is stopped transport at this time, and tractive transformer carries out trouble hunting, wind power generation unit and photovoltaic generation unit
Then low current equalizaing charge is carried out for energy storage locomotive power supply unit.Specifically performance number is
Preferably, contact line passes through mode without train: control unit monitoring meets
PWind energy is used+PLuminous energy is used≥PEnergy storage is filled (15)
Charge power needed for wind power generation unit and photovoltaic generation unit then provide energy storage locomotive power supply unit at this time, it is extra
Electric energy is discarded by abandonment, abandoning light.Specifically performance number is
When monitoring meets
PWind energy is used+PLuminous energy is used<PEnergy storage is filled (17)
Wind power generation unit and photovoltaic generation unit are then that energy storage locomotive power supply unit carries out low current equalizaing charge at this time.
Specifically performance number is
The isolated network ferroelectric power supply system of the present invention provided multiple forms of energy to complement each other based on battery energy storage and method of supplying power to, mainly by wind
Power generator unit, photovoltaic generation unit, energy storage locomotive power supply unit and standby emergency power supply unit form microgrid, are totally independent of
Power grid realizes the reliability of electric power supply of locomotive, station service and control system, avoids being laid with 220kV ultra-high-tension power transmission line, build
If numerous traction substations and arranging a related secondary device, the annual electricity charge are saved, engineering construction cost, equipment are initially thrown
Money and later period O&M cost.In addition, collect the electric energy of wind power generation unit and photovoltaic generation unit by energy storage locomotive power supply unit,
It to be high-power, intermittent locomotive power supply, solves that traction depressor capacity configuration at present is high, utilization rate is low, needs every year
The shortcomings that paying huge electrical capacity charge is not necessarily to pay electrical capacity charge to power grid using technical solution of the present invention.Moreover, being based on
The isolated network ferroelectric power supply system that battery energy storage is provided multiple forms of energy to complement each other can be laid on the spot distributed wind-driven generator and photovoltaic array is (small
Capacity), by collecting its low-power energy with locomotive power (high-power load) matched chemical energy storage power station, solve at present
West area due to 220kV major network apart from the railway network farther out or major network is more weak, meter and economy and practical feasibility without
Method realizes the problem of smooth laying of the railway network.
Below in conjunction with drawings and the specific embodiments, the invention will be described in further detail.
Detailed description of the invention
Fig. 1 is the power supply mode topology diagram of electrified railway power supply system in the prior art；
Fig. 2 is one of them isolated network ferroelectric power supply system topological structure provided multiple forms of energy to complement each other based on battery energy storage of the present embodiment
Figure；
Fig. 3 is another isolated network ferroelectric power supply system topological structure provided multiple forms of energy to complement each other based on battery energy storage of the present embodiment
Figure；
Fig. 4 is the isolated network ferroelectric power supply system method of supplying power to flow chart of the present embodiment；
Fig. 5 is the intelligent monitor system structural schematic diagram of the present embodiment.
Specific embodiment
Fig. 2 is the isolated network ferroelectric power supply system that the one of which of the present embodiment is provided multiple forms of energy to complement each other based on battery energy storage, such as Fig. 2 institute
Show, based on the isolated network ferroelectric power supply system that battery energy storage is provided multiple forms of energy to complement each other, including photovoltaic generation unit 1, wind power generation unit 2, storage
Energy locomotive power supply unit 3, transformer 4, standby emergency power supply unit 5, wherein the photovoltaic generation unit 1, wind power generation unit
2, energy storage locomotive power supply unit 3 comes together on low-voltage alternating-current bus, and photovoltaic generation unit 1 and wind power generation unit 2 pass through small electricity
Stream charges jointly for energy storage locomotive power supply unit 3, and energy storage locomotive power supply unit 3 discharges the electric energy collected when locomotive passes through,
Guarantee that locomotive is stable, continue, safe and reliable operation, standby emergency power supply unit 5 is then calm, unglazed etc. extremely special
In the case of, it charges for energy storage locomotive power supply unit 3, guarantees the reliability of locomotive power supply.Low-voltage AC bus is become by traction
Electric energy is transmitted in the contact line of the railway network 7 by depressor 4, and described 4 device configuration of tractive transformer two, mutual backup is not necessarily to
To power grid electricity payment and electrical capacity charge.The railway network 7 is mainly made of contact line, track, return wire, locomotive, switching station etc..Institute
Stating photovoltaic generation unit 1 includes multiple photovoltaic arrays 11 being connected in parallel on ac bus, and the photovoltaic array 11 is inverse by photovoltaic
Become device 12 to be connected with low-voltage alternating-current bus.The wind power generation unit 2 includes multiple wind-power electricity generations being connected in parallel on ac bus
Machine 21.The energy storage locomotive power supply unit 3 includes the battery 31 of multiple parallel connections, and battery 31 is female by energy accumulation current converter 32 and low pressure
Line is connected.The standby emergency power supply unit 5 includes the gas turbine 51 of multiple parallel connections, gas turbine 51 and ac bus phase
Even, it charges for energy storage locomotive power supply unit 3.
Fig. 3 is another isolated network ferroelectric power supply system provided multiple forms of energy to complement each other based on battery energy storage of the present embodiment, such as Fig. 3 institute
Show, based on the isolated network ferroelectric power supply system that battery energy storage is provided multiple forms of energy to complement each other, including photovoltaic generation unit 1, wind power generation unit 2, storage
It can locomotive power supply unit 3, transformer 4, standby emergency power supply unit 5.Wherein, the photovoltaic generation unit 1, wind power generation unit
2, energy storage locomotive power supply unit 3 comes together on DC bus, is then changed into friendship by direct current by modular energy accumulation current converter 6
Stream comes together in ac bus, is locomotive power supply by tractive transformer 4.The photovoltaic generation unit 1 includes multiple is connected in parallel on directly
Flow the photovoltaic array 11 of bus.The wind power generation unit 2 includes multiple wind-driven generators 21 being connected in parallel on DC bus, institute
Wind-driven generator 21 is stated to be connected by AC/DC conversion module 22 with DC bus.The standby emergency power supply unit 5 includes multiple
Gas turbine 51 in parallel, gas turbine 51 are connected with ac bus, charge for locomotive power supply unit 3.
Method of supplying power to based on the isolated network ferroelectric power supply system that battery energy storage is provided multiple forms of energy to complement each other, as shown in figure 4, including following step
It is rapid:
Working condition judgement 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；
Railway network contact line has locomotive to pass through mode: having locomotive to pass through when detecting on contact net, energy storage locomotive supplies at this time
Electric unit battery 3 and wind power generation unit 2, photovoltaic generation unit 1 are powered jointly for locomotive load, its workload demand is met；Such as
Tractive transformer 4 breaks down, and electric energy can not be transferred to locomotive, at this point, the section is temporarily stopped transport, tractive transformer 4 carries out event
Barrier maintenance, to avoid energy waste, wind power generation unit 2 and photovoltaic generation unit 1 for the charging of energy storage locomotive power supply unit 3.
Railway network contact line passes through mode without locomotive: passing through on contact net without locomotive when detecting, at this time wind-power electricity generation list
Member 2, photovoltaic generation unit 1 carry out low current equalizaing charge, energy storage locomotive power supply unit 3 in real time for energy storage locomotive power supply unit 3
Collect wind, photoelectricity energy, then to meet electric energy supply when locomotive passes through.
Contact line has locomotive by mode, when the system that monitors meets
By formula (1) it is found that PWind energy is usedIt can provide to be removed in wind power generation unit 2 since the abnormal causes such as failure are remaining
The wind-driven generator of function power, PLuminous energy is usedIt is active since the abnormal causes such as failure are left can provide for removing in photovoltaic generation unit 2
The photovoltaic array of power, PEnergy storage is putTo be removed in energy storage locomotive power supply unit 3 since the abnormal causes such as to be unsatisfactory for remaining by failure, SOC
It can provide the energy-storage units of active power.
Wind power generation unit 2 and photovoltaic generation unit 1 provide the maximum power and energy that can be provided at this time, and energy storage locomotive supplies
Electric unit 3 then provides remainder power and energy needed for locomotive, and energy accumulation current converter (PCS) 32 meets reactive power needed for system, tool
Body numerical value is
By formula (2) it is found that PWind、PLight、PStorage、PCombustionRespectively wind power generation unit 2, photovoltaic generation unit 1, energy storage locomotive supply
5 reality output active power of electric unit 3 and standby emergency power supply unit, PLocomotiveFor active power needed for locomotive, QCurrent transformerWith QsetPoint
It Wei not 32 reality output reactive power of energy accumulation current converter (PCS) and reactive power needed for system.
When the system that monitors meets
By formula (3) it is found that PEnergy storage is filledFor removed in energy storage locomotive power supply unit due to failure, SOC be unsatisfactory for etc. it is abnormal former
Because of the remaining energy-storage units that can be charged.
The section locomotive is stopped transport at this time, and tractive transformer 4 carries out trouble hunting, wind power generation unit 2 and photovoltaic power generation list
Charge power needed for member 1 then provides energy storage locomotive power supply unit 3, extra electric energy are discarded by abandonment, abandoning light.Specifically performance number is
When the system that monitors meets
The section locomotive is stopped transport at this time, and tractive transformer 4 carries out trouble hunting, wind power generation unit 2 and photovoltaic power generation list
Member 1 then carries out low current equalizaing charge for energy storage locomotive power supply unit 3.Specifically performance number is
When the system that monitors meets
Have formula (7) it is found that P combustion can with for removed in standby emergency power supply unit due to the abnormal causes such as failure are remaining can
The gas turbine of active power is provided.
Wind power generation unit 2, photovoltaic generation unit 1 and energy storage locomotive power supply unit 3 provide the maximum function that can be provided at this time
Rate and energy, standby emergency unit 5 then provide remaining power and energy, specific value needed for locomotive and are
When the system that monitors meets
Wind power generation unit 2, photovoltaic generation unit 1, energy storage locomotive power supply unit 3 and standby emergency unit 5 provide at this time
The power and energy that maximum can provide, locomotive speed-limiting operation, specific value are
When the system that monitors meets
The section locomotive is stopped transport at this time, and tractive transformer 4 carries out trouble hunting, wind power generation unit 2 and photovoltaic power generation list
Charge power needed for member 1 then provides energy storage locomotive power supply unit 3, extra electric energy are discarded by abandonment, abandoning light.Specifically performance number is
When the system that monitors meets
The section locomotive is stopped transport at this time, and tractive transformer 4 carries out trouble hunting, wind power generation unit 2 and photovoltaic power generation list
Member 1 then carries out low current equalizaing charge for energy storage locomotive power supply unit 3.Specifically performance number is
Contact line passes through mode without train: monitoring meets
PWind energy is used+PLuminous energy is used≥PEnergy storage is filled (15)
Charge power needed for wind power generation unit 2 and photovoltaic generation unit 1 then provide energy storage locomotive power supply unit 3 at this time,
Extra electric energy is discarded by abandonment, abandoning light.Specifically performance number is
When monitoring meets
PWind energy is used+PLuminous energy is used<PEnergy storage is filled (17)
Wind power generation unit 2 and photovoltaic generation unit 1 carry out that low current is balanced to be filled then at this time for energy storage locomotive power supply unit 3
Electricity.Specifically performance number is
The isolated network ferroelectric method of supplying power to provided multiple forms of energy to complement each other described in the present embodiment based on battery energy storage can be using intelligence as figure 5 illustrates
Energy monitoring system control, for the intelligent monitor system using distributed frame is divided into, control centre mainly completes entire power station
Electrical control, including wind-driven generator and its controller, photovoltaic array and its controller, gas turbine and its controller, energy storage
The functions such as transformer control, PCS monitoring, battery cell monitoring, stable state control, transient state control.The intelligent monitor system is using double nets
Network structure, server, work station use to be got up with redundancy, industrial standard LAN connection, and wherein battery energy storage system is adopted
With power chief coordinator controller and two kinds of control modes of Energy Management System to ensure the reliable and stable response of battery energy storage system, control
Unit processed makes three battery energy storage system, the railway network, power grid system associations by the information communication with city's tune, railway dispatching center
It transfers and makees, it is ensured that locomotive can stablize, is lasting, is reliable, safe operation.
The isolated network ferroelectric power supply system and method for supplying power to provided multiple forms of energy to complement each other described in the present embodiment based on battery energy storage are to Ministry of Railways
The benefit of door:
(1) the isolated network ferroelectric power supply system and method for supplying power to are totally independent of power grid, mainly by wind power generation unit, light
It lies prostrate generator unit, energy storage locomotive power supply unit and standby emergency power supply unit and forms green microgrid progress locomotive, station service and control
The power supply of system processed, without being laid with 220kV ultra-high-tension power transmission line, the numerous traction substations of construction and a large amount of one or two electricity of arrangement
Gas equipment largely reduces shared land resource, and engineering construction cost, equipment initial outlay cost and later period O&M can be greatly reduced
Cost.
(2) battery, PCS, the tractive transformer of the isolated network ferroelectric power supply system, which can be integrated among each packaging, forms
Modularized equipment, site operation is fast, and the construction period is short.
(3) electric energy oneself used in the isolated network ferroelectric power supply system and method for supplying power to is self-sustaining, is totally independent of power grid, therefore
Without paying a large amount of electricity charge and the traction traction transformer capacity electricity charge every year to power grid, it is significantly reduced O&M cost.
(4) the isolated network ferroelectric power supply system and method for supplying power to can be laid with distributed wind-driven generator, photovoltaic battle array on the spot
Column and chemical energy storage device realize the electricity in remote mountain areas 220kV high-voltage fence farther out or more weak area apart from the railway network
Gasification economy along railways are quickly built.
(5) the isolated network ferroelectric power supply system and method for supplying power to have the function of idle regulation, load flow regulation, completely can be with
The power quality requirement for realizing grid entry point, can reduce or save and SVG, STACOM, the flow controller etc. of network interface configuration are set
It is standby, reduce equipment investment cost and later period O&M cost.
The isolated network ferroelectric power supply system and method for supplying power to provided multiple forms of energy to complement each other described in the present embodiment based on battery energy storage are to power grid portion
The benefit of door:
(1) the isolated network ferroelectric power supply system is totally independent of power grid, is mainly converged in real time by energy storage locomotive power supply unit
The electric energy for collecting wind power generation unit and photovoltaic generation unit, meets its power demand, and absorb locomotive simultaneously when locomotive passes through
Brake feedback power, therefore the isolated network ferroelectric power supply system has cut off contacting for power grid and railway contact line, eliminates Traction networks
The adverse effect such as low to grid power quality, power factor (PF).
(2) the isolated network ferroelectric power supply system and method for supplying power to can be sent out by distributed wind-power generator unit and photovoltaic
Electric unit is that energy storage locomotive power supply unit carries out low current equalizaing charge in real time, and energy storage locomotive power supply unit then collects electric energy satisfaction
High-power, impact locomotive load power supply, throws a sprat to catch a herring, and realizes small power supply as high-power, intermittent load is safe and reliable
Lasting power supply.Simultaneously as oneself is self-sustaining completely for the system electricity consumption, independently of power grid, use on power grid daytime is alleviated indirectly
The pressure on electric peak, the effect of reaching peak regulation.
(3) wind power generation unit, photovoltaic generation unit, energy storage locomotive power supply unit of the isolated network ferroelectric power supply system and
Mutual backup between standby emergency power supply unit, also mutual backup between the individual device in each unit, system redundancy is higher,
And then it ensure that system power supply reliability and security.
(4) the isolated network ferroelectric power supply system is mainly by wind power generation unit, photovoltaic generation unit, energy storage locomotive power supply list
Member and standby emergency power supply unit form microgrid, and energy source green and environment-friendly used, to environment without any harm, which is produced
Raw energy can be described as the high-quality electric energy of pure green.
(5) the standby emergency power supply unit in the isolated network ferroelectric power supply system can be replaced with 10kV power distribution network on the spot into
Row connection.When contact line has locomotive to pass through, 10kV power distribution network and traction station of electrical railroad power supply system are disconnected, by wind-power electricity generation list
Member, photovoltaic generation unit, the power supply of energy storage locomotive power supply unit；When contact line passes through without locomotive, wind power generation unit and photovoltaic
Generator unit is energy locomotive power supply unit charging, excess energy sale of electricity online jointly；Work as wind power generation unit or photovoltaic power generation list
When member or energy storage locomotive power supply unit failure, 10kV power distribution network can it is reliable with remaining fault-free unit matching common guarantee locomotive,
Continue, safe and stable power supply.
(6) gas turbine in the standby emergency power supply unit of the isolated network ferroelectric power supply system can be replaced diesel engine,
Or other generating equipments such as fuel cell.
Those skilled in the art after considering the specification and implementing the invention disclosed here, will readily occur to of the invention its
His embodiment.This application is intended to cover any variations, uses, or adaptations of the invention, these modifications, purposes or
Adaptive change follow general principle of the invention and including the undocumented common knowledge in the art of the present invention or
Conventional techniques.The description and examples are only to be considered as illustrative, and true scope and spirit of the invention are by claim
It points out.
Claims (10)
1. a kind of isolated network ferroelectric power supply system provided multiple forms of energy to complement each other based on battery energy storage, it is characterised in that: including photovoltaic generation unit,
Wind power generation unit, energy storage locomotive power supply unit and tractive transformer, wherein the photovoltaic generation unit, wind power generation unit,
Energy storage locomotive power supply unit comes together on ac bus or DC bus, and photovoltaic generation unit and wind power generation unit pass through small electricity
Stream charges jointly for energy storage locomotive power supply unit, and ac bus is railway network power supply by tractive transformer；On DC bus
Electric energy comes together on ac bus after being changed into alternating current by energy accumulation current converter, is then railway network confession by tractive transformer
Electricity.
2. a kind of isolated network ferroelectric power supply system provided multiple forms of energy to complement each other based on battery energy storage as described in claim 1, it is characterised in that:
The isolated network ferroelectric power supply system provided multiple forms of energy to complement each other based on battery energy storage further includes the standby for the charging of energy storage locomotive power supply unit
Emergency power supply unit.Standby emergency power supply unit is energy storage locomotive power supply unit in the case where calm, unglazed etc. extremely special
Charging, guarantees the reliability of locomotive power supply.
3. a kind of isolated network ferroelectric power supply system provided multiple forms of energy to complement each other based on battery energy storage as described in claim 1, it is characterised in that:
The photovoltaic generation unit includes multiple photovoltaic arrays being connected in parallel on ac bus, and the photovoltaic array passes through photovoltaic DC-to-AC converter
It is connected with ac bus.
4. a kind of isolated network ferroelectric power supply system provided multiple forms of energy to complement each other based on battery energy storage as described in claim 1, it is characterised in that:
The photovoltaic generation unit includes multiple photovoltaic arrays for being connected in parallel on DC bus.
5. a kind of isolated network ferroelectric power supply system provided multiple forms of energy to complement each other based on battery energy storage as described in claim 1, it is characterised in that:
The wind power generation unit includes multiple wind-driven generators being connected in parallel on ac bus.
6. a kind of isolated network ferroelectric power supply system provided multiple forms of energy to complement each other based on battery energy storage as described in claim 1, it is characterised in that:
The wind power generation unit includes multiple wind-driven generators being connected in parallel on DC bus, and the wind-driven generator passes through AC/DC
Conversion module is connected with DC bus.
7. a kind of isolated network ferroelectric power supply system provided multiple forms of energy to complement each other based on battery energy storage as described in claim 1, it is characterised in that:
The standby emergency power supply unit includes the gas turbine of multiple parallel connections, and gas turbine is connected with ac bus, is locomotive power supply
Unit charging.
8. the method for supplying power to based on the isolated network ferroelectric power supply system that battery energy storage is provided multiple forms of energy to complement each other, which is characterized in that including walking as follows
Rapid: working condition judgement and operating mode identification: if off working state, then carrying out fault distinguishing and maintenance, if work shape
State then carries out lower sequence step after operating mode identification；
Railway network contact line has locomotive to pass through mode: having locomotive to pass through when detecting on contact net, at this time energy storage locomotive power supply list
First battery and wind power generation unit, photovoltaic generation unit are locomotive load power supply jointly, meet its workload demand；Such as traction voltage transformation
Device breaks down, and electric energy can not be transferred to locomotive, at this point, the section is temporarily stopped transport, tractive transformer carries out trouble hunting, wind-force
Generator unit and photovoltaic generation unit are the charging of energy storage locomotive power supply unit；
Railway network contact line passes through mode without locomotive: passing through on contact net without locomotive when detecting, at this time wind power generation unit, light
Volt generator unit be in real time energy storage locomotive power supply unit carry out low current equalizaing charge, energy storage locomotive power supply unit then collect wind,
Photoelectricity energy, to meet electric energy supply when locomotive passes through.
9. the method for supplying power to for the isolated network ferroelectric power supply system provided multiple forms of energy to complement each other as shown in claim 8 based on battery energy storage, special
Sign is that contact line has locomotive by mode, when the system that monitors meets
By formula (1) it is found that PWind energy is usedIt is left to can provide active power due to failure exception to remove in wind power generation unit
Wind-driven generator, PLuminous energy is usedTo remove the photovoltaic for being left can provide active power due to failure exception in photovoltaic generation unit
Array, PEnergy storage is putIt is left to can provide active power since failure, SOC are unsatisfactory for abnormal cause to remove in energy storage locomotive power supply unit
Energy-storage units；
Wind power generation unit and photovoltaic generation unit provide the maximum power and energy that can be provided, energy storage locomotive power supply unit at this time
Remainder power and energy needed for locomotive are then provided, energy accumulation current converter (PCS) meets reactive power needed for system, and specific value is
By formula (2) it is found that PWind、PLight、PStorage、PCombustionRespectively wind power generation unit, photovoltaic generation unit, energy storage locomotive power supply unit
And standby emergency power supply unit reality output active power, PLocomotiveFor active power needed for locomotive, QCurrent transformerWith QsetRespectively energy storage
Reactive power needed for current transformer (PCS) reality output reactive power and system；
When the system that monitors meets
By formula (3) it is found that PEnergy storage is filledTo be removed in energy storage locomotive power supply unit since the abnormal causes such as to be unsatisfactory for surplus by failure, SOC
The energy-storage units that can be charged down；
The section locomotive is stopped transport at this time, and tractive transformer carries out trouble hunting, and wind power generation unit is then mentioned with photovoltaic generation unit
For charge power needed for energy storage locomotive power supply unit, extra electric energy is discarded by abandonment, abandoning light；Specifically performance number is
When the system that monitors meets
The section locomotive is stopped transport at this time, and tractive transformer carries out trouble hunting, and wind power generation unit is then with photovoltaic generation unit
Energy storage locomotive power supply unit carries out low current equalizaing charge.Specifically performance number is
When the system that monitors meets
There is formula (7) it is found that PCombustion can be usedIt can provide to be removed in standby emergency power supply unit since the abnormal causes such as failure are remaining
The gas turbine of function power；
Wind power generation unit, photovoltaic generation unit and energy storage locomotive power supply unit provide the maximum power and energy that can be provided at this time
Amount, standby emergency unit then provide remaining power and energy, specific value needed for locomotive and are
When the system that monitors meets
Wind power generation unit, photovoltaic generation unit, energy storage locomotive power supply unit and standby emergency unit provide maximum and can mention at this time
The power and energy of confession, locomotive speed-limiting operation, specific value are
When the system that monitors meets
The section locomotive is stopped transport at this time, and tractive transformer carries out trouble hunting, and wind power generation unit is then mentioned with photovoltaic generation unit
For charge power needed for energy storage locomotive power supply unit, extra electric energy is discarded by abandonment, abandoning light.Specifically performance number is
When the system that monitors meets
The section locomotive is stopped transport at this time, and tractive transformer carries out trouble hunting, and wind power generation unit is then with photovoltaic generation unit
Energy storage locomotive power supply unit carries out low current equalizaing charge.Specifically performance number is
10. the method for supplying power to for the isolated network ferroelectric power supply system provided multiple forms of energy to complement each other as shown in claim 8 based on battery energy storage, special
Sign is,
Contact line passes through mode without train: control unit monitoring meets
PWind energy is used+PLuminous energy is used≥PEnergy storage is filled (15)
Charge power needed for wind power generation unit and photovoltaic generation unit then provide energy storage locomotive power supply unit at this time, extra electric energy
It is discarded by abandonment, abandoning light.Specifically performance number is
When monitoring meets
PWind energy is used+PLuminous energy is used<PEnergy storage is filled (17)
Wind power generation unit and photovoltaic generation unit are then that energy storage locomotive power supply unit carries out low current equalizaing charge at this time.Specifically
Performance number is
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110190628A (en) * | 2019-06-12 | 2019-08-30 | 西南交通大学 | A kind of full Parallel AT tractive power supply system of multiple line based on comprehensive energy and 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 |
| CN111806235A (en) * | 2020-07-22 | 2020-10-23 | 西南交通大学 | Vehicle-ground integrated multifunctional emergency energy storage power supply system and control method thereof |
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| CN207304021U (en) * | 2017-10-17 | 2018-05-01 | 西南交通大学 | A kind of grid-connected system of providing multiple forms of energy to complement each other applied to electric railway |
| CN208539580U (en) * | 2018-08-16 | 2019-02-22 | 洁电（北京）储能科技有限公司 | A kind of isolated network ferroelectric power supply system provided multiple forms of energy to complement each other based on battery energy storage |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207304021U (en) * | 2017-10-17 | 2018-05-01 | 西南交通大学 | A kind of grid-connected system of providing multiple forms of energy to complement each other applied to electric railway |
| CN208539580U (en) * | 2018-08-16 | 2019-02-22 | 洁电（北京）储能科技有限公司 | A kind of isolated network ferroelectric power supply system provided multiple forms of energy to complement each other based on battery energy storage |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110190628A (en) * | 2019-06-12 | 2019-08-30 | 西南交通大学 | A kind of full Parallel AT tractive power supply system of multiple line based on comprehensive energy and method |
| CN110190628B (en) * | 2019-06-12 | 2022-04-15 | 西南交通大学 | Complex line full-parallel AT traction power supply system and method based on comprehensive energy |
| 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 |
| CN111806235A (en) * | 2020-07-22 | 2020-10-23 | 西南交通大学 | Vehicle-ground integrated multifunctional emergency energy storage power supply system and control method thereof |
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