CN106611963A - Power supply system and power supply method for railways in desert areas based on wind-photovoltaic complementary power generation - Google Patents

Power supply system and power supply method for railways in desert areas based on wind-photovoltaic complementary power generation Download PDF

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Publication number
CN106611963A
CN106611963A CN201610553377.9A CN201610553377A CN106611963A CN 106611963 A CN106611963 A CN 106611963A CN 201610553377 A CN201610553377 A CN 201610553377A CN 106611963 A CN106611963 A CN 106611963A
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CN
China
Prior art keywords
photovoltaic
power
wind
railway
direct current
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Pending
Application number
CN201610553377.9A
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Chinese (zh)
Inventor
吴兴全
李志伟
姚天亮
王堃
刘宏
李秋鹏
张洪源
丁国亮
代海建
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Co Ltd Of Chinese Energy Construction Group Gansu Prov Electric Power Design Inst
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Co Ltd Of Chinese Energy Construction Group Gansu Prov Electric Power Design Inst
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Priority to CN201610553377.9A priority Critical patent/CN106611963A/en
Publication of CN106611963A publication Critical patent/CN106611963A/en
Pending legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00Circuit arrangements for ac mains or ac distribution networks
    • H02J3/38Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H02J3/381Dispersed generators
    • H02J3/382Dispersed generators the generators exploiting renewable energy
    • H02J3/383Solar energy, e.g. photovoltaic energy
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00Circuit arrangements for ac mains or ac distribution networks
    • H02J3/01Arrangements for reducing harmonics or ripples
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00Circuit arrangements for ac mains or ac distribution networks
    • H02J3/28Arrangements for balancing of the load in a network by storage of energy
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00Circuit arrangements for ac mains or ac distribution networks
    • H02J3/38Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H02J3/381Dispersed generators
    • H02J3/382Dispersed generators the generators exploiting renewable energy
    • H02J3/386Wind energy
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02SGENERATION OF ELECTRIC POWER BY CONVERSION OF INFRA-RED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S10/00PV power plants; Combinations of PV energy systems with other systems for the generation of electric power
    • H02S10/10PV power plants; Combinations of PV energy systems with other systems for the generation of electric power including a supplementary source of electric power, e.g. hybrid diesel-PV energy systems
    • H02S10/12Hybrid wind-PV energy systems
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy
    • Y02E10/56Power conversion systems, e.g. maximum power point trackers
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/70Wind energy
    • Y02E10/76Power conversion electric or electronic aspects
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E40/00Technologies for an efficient electrical power generation, transmission or distribution
    • Y02E40/40Arrangements for reducing harmonics
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E70/00Other energy conversion or management systems reducing GHG emissions
    • Y02E70/30Systems combining energy storage with energy generation of non-fossil origin

Abstract

The invention discloses a power supply system and a power supply method for railways in desert areas based on wind-photovoltaic complementary power generation in order to solve the problem that power generated from photovoltaic and wind energy is volatile and cannot be supplied continuously. The system comprises photovoltaic arrays and fans. The system further comprises a photovoltaic DC influx line, a wind DC influx line, and DC overhead equipment. The photovoltaic arrays are connected to the run-through DC overhead equipment through the photovoltaic DC influx line. The fans are connected to the run-through DC overhead equipment through the wind DC influx line. Wind energy and photovoltaic energy systems are constructed in expanded safety protection zones along railways to realize comprehensive utilization of land. By changing the traditional wind-driven and photovoltaic power generation and boosting modes and employing a DC collection scheme for both photovoltaic energy and wind energy, the inverting process of new energy is reduced, and the harmonic component is reduced. The AC overhead equipment of a railway locomotive is changed into DC overhead equipment, power is supplied to a DC traction motor directly after being taken from the overhead equipment, and balanced consumption of new energy is achieved.

Description

Using the Desert Regions railway power system and method for supplying power to of wind light mutual complementing power generation
Technical field
The invention belongs to railway power supply field, and in particular to a kind of Desert Regions railway power system and method for supplying power to.
Background technology
Railway is the important infrastructure of country and economic large artery trunks, is conducive to driving the economy and social development in area along the line.But, because the public welfare of railway transportation and cheapness, huge railway power system and the huge power purchase electricity charge allows railroad to subject high and power supply safety the dual-pressure of operation cost.
Particularly, the railway in NORTHWEST CHINA desertificated area is built, by way of many depopulated zones, apart from power network resources hundreds of kilometer is exceeded, considered to also need to draw two-way independent current source from electrical network from power supply safety reliability and power, power supply cost is huge.However, the geographic latitude of Desert Regions is high, solar illuminating resource and wind energy resources are abundant, possess the advantage of development wind-power electricity generation and photovoltaic generation.With reaching its maturity and commercial applications for new energy power generation technology, photovoltaic and wind-powered electricity generation become the possible power supply of railway power supply technical field.
But, photovoltaic and wind-powered electricity generation send electric power and have the deadly defect that undulatory property is big and can not continuously power, iff relying on new energy, it is impossible to which the power supply reliability for meeting railway is required.By convention, photovoltaic and wind-powered electricity generation firstly the need of through exchanging-multiple rectification or the reversals of direct current and AC/DC, the alternating current of generation will also at a distance deliver to again electrical network after boosting several times;Then railway needs to build very long special supply line to draw from electrical network and connects alternating current again, rectification several times or reversals of the railway internal power supply system also comprising exchange-direct current and AC/DC.There is the roundabout phenomenon sought something far and wide when it is within reach with electric power flow direction in above-mentioned whole power supply process, and there is the redundant configuration of many sport technique segments, bring huge construction investment to waste, the in-situ balancing for being also unfavorable for new forms of energy is dissolved, also easily bring the problem in terms of the quality of power supply and power supply reliability.
The content of the invention
It is an object of the invention to provide a kind of Desert Regions railway power system of utilization wind light mutual complementing power generation, solves the problems, such as that photovoltaic and wind-powered electricity generation send electric power and have undulatory property big and can not continuously power.
Further object is that providing a kind of Desert Regions railway power supply method of utilization wind light mutual complementing power generation, the auxiliary power supply of the power loads such as the illumination of traction electric machine and locomotive, air-conditioning, the socket of Desert Regions railway is solved the problems, such as.
Technical solution of the present invention is as follows:A kind of Desert Regions railway power system of utilization wind light mutual complementing power generation, including photovoltaic array, blower fan;It also collects circuit, wind power direct current and collects circuit, direct current contact net including photovoltaic DC, and photovoltaic array Jing photovoltaic DCs collect connection in the direct current contact net of insertion, and blower fan Jing wind power direct currents collect connection in the direct current contact net of insertion.
As a further improvement on the present invention, in middle, railway outside is arranged with photovoltaic array and blower fan to railway.
As a further improvement on the present invention, photovoltaic DC collects photovoltaic generation power control device is provided between circuit and direct current contact net.
As a further improvement on the present invention, wind power direct current is collected wind-power electricity generation output control device is provided between circuit and direct current contact net.
As a further improvement on the present invention, the direct current contact net is provided with energy storage device.The storage of photovoltaic and wind-powered electricity generation electric power is realized when passing through without locomotive, energy storage device release electric power, uninterrupted, continuable power supply is provided together with generation of electricity by new energy station for railway locomotive when having locomotive to pass through.
A kind of method that Desert Regions railway power system of utilization wind light mutual complementing power generation is powered, Along Railway adopts wind light mutual complementing power generation method for arranging, that is railway outside is arranged with photovoltaic array and blower fan, photovoltaic array and blower fan share the straight-flow system of identical electric pressure, railway locomotive is by pantograph from direct current contact net power taking, power directly to DC traction motor, using DC traction motor the advantage of frequency control is easy to;Powered for AC load by locomotive inverter.The in-situ balancing for realizing new forms of energy electric power is dissolved;Simultaneously meeting new forms of energy collects the requirement powered with railway locomotive, by reducing sport technique segment to reduce investment outlay.
Rectification of the conventional wind generating comprising exchange-AC/DC and reversals, the wind-power electricity generation of the present invention only switching process comprising exchange-direct current, are directly collected after boosting using direct current.
Conventional photovoltaic generates electricity and includes the reversals of AC/DC, and photovoltaic generation of the present invention is not needed inverter, directly collected using direct current after boosting.
The problem that the present invention is powered for Desert Regions railway using wind-powered electricity generation and Photovoltaic new energy; propose to implement the application process of wind light mutual complementing power generation and meet the common DC system that new forms of energy collect circuit and railway power supply contact net; by building wind-powered electricity generation and photovoltaic in expansion protective zone along the railway, land resources science is realized;Change the conventional electric power generation and boosting mode of photovoltaic and wind-powered electricity generation, scheme is collected using direct current, reduce the reversals of new forms of energy, reduce harmonic component;The ac contactor net for changing railway locomotive is direct current contact net, is powered directly to DC traction motor from after contact net power taking, and is powered to AC loads such as locomotive illumination, air-conditioning, sockets by inverter, and the balance for solving new forms of energy is dissolved.
Details are as follows for the technology of the present invention effect:
First, suitably expanding the protective zone of railway both sides is used to arrange photovoltaic and blower fan.It is well known that the soil of the protective zone of Along Railway leaves unused for a long time, fail comprehensive development and utilization, landscape is dull, and dust storm is also especially big;Therefore; it is feasible that the present invention expands the expropriation of land scope of protective zone; because railway is public welfare infrastructure; railroad possesses the priority and preferential policy of expropriation of land, while expropriation of land can reduce the expropriation of land cost of new forms of energy, by building photovoltaic and wind-powered electricity generation; both land resources science rate had been improve; landscape is beautified again, generation of electricity by new energy device is used as buffering isolation strip, moreover it is possible to effective desert improvement.
Secondly, wind-powered electricity generation and photovoltaic collect system using shared direct current.By convention, photovoltaic module sends unidirectional current, and Jing inverters are converted to alternating current, then collects Jing after box-type substation boosting and sends;Blower fan sends unconventional alternating current, and by pushing up rectification and inverter in storehouse alternating current is converted to, and then collects Jing after box-type substation boosting and sends;The present invention adopts direct current binding mode, reduces the reversals of new forms of energy, reduces investment, also reduces harmonic component.
Finally, railway adopts direct current contact net system.By convention, railway locomotive contact net generally adopts ac power supply system, traction electric machine majority to use alternating current generator;Railway direct current contact net of the present invention directly using the direct current current collection main line of new forms of energy, the two is united two into one, unified electric pressure, saves investment;Railway locomotive is powered from after direct current contact net power taking by pantograph directly to DC traction motor, and using DC traction motor the advantage of frequency control is easy to;And Jing inverters are that the AC loads such as locomotive illumination, air-conditioning, socket are powered, and the in-situ balancing for realizing new forms of energy electric power is dissolved.
In addition, the present invention installs energy storage device additional on direct current contact net, the storage of wind-powered electricity generation and photovoltaic electric power is realized when passing through without locomotive, energy storage device release electric power, uninterrupted, continuable power supply is provided together with generation of electricity by new energy station for railway locomotive when having locomotive to pass through.
Description of the drawings
Fig. 1 is a kind of total arrangement schematic diagram of the Desert Regions railway power system of utilization wind light mutual complementing power generation;
Fig. 2 is a kind of Desert Regions railway power system application scheme schematic diagram of utilization wind light mutual complementing power generation.
In figure:1-photovoltaic array, 2-blower fan, 3-photovoltaic DC collects circuit, 4-wind power direct current collects circuit, 5-photovoltaic generation control device, 6-wind power generation controlling device, 7-direct current contact net, 8-pantograph, 9-railway locomotive, 10-DC traction motor, 11-locomotive inverter, 12-AC load, 13-energy storage device.
Specific embodiment
Below in conjunction with the accompanying drawings the present invention will be further described in detail.
Photovoltaic generation control device and wind power generation controlling device in embodiment is commercially available.
A kind of Desert Regions railway power system of utilization wind light mutual complementing power generation, collect circuit 3, wind power direct current including photovoltaic array, blower fan, photovoltaic DC and collect circuit 4, direct current contact net 7, the Jing photovoltaic DCs of photovoltaic array 1 collect the direct current contact net 7 that circuit 3 is connected to insertion, and the Jing wind power direct currents of blower fan 2 collect the direct current contact net 7 that circuit 4 is connected to insertion.Railway is arranged with photovoltaic array 1 and blower fan 2 in middle, railway outside.Photovoltaic DC collects photovoltaic generation power control device 5 is provided between circuit 3 and direct current contact net 7.Wind power direct current is collected wind-power electricity generation output control device 6 is provided between circuit 4 and direct current contact net 7.Direct current contact net 7 is provided with energy storage device 13.
A kind of method that Desert Regions railway power system of utilization wind light mutual complementing power generation is powered; Along Railway adopts wind light mutual complementing power generation method for arranging; that is railway outside is arranged with photovoltaic array 1 and blower fan 2; expand the protective zone of Desert Regions railway both sides; width take over the land for use by 200 meters of controls in railway both sides; the expropriation of land cost of new forms of energy is reduced, land resources science rate is improve.Arrange in the range of expropriation of land photovoltaic and blower fan expanding, for photovoltaic generation and wind-power electricity generation, generation of electricity by new energy device is conducive to sightseeing tour along the line and windblown sand movement.
Photovoltaic array 1 and blower fan 2 share the straight-flow system of identical electric pressure, and railway locomotive 9, from the power taking of direct current contact net 7, is powered directly to DC traction motor 10 by pantograph 8, powered for AC load 12 by locomotive inverter 11.
Power directly to DC traction motor from after contact net power taking, be that the power loads such as locomotive illumination, air-conditioning, socket are powered by inverter, the in-situ balancing for realizing new forms of energy electric power is dissolved;Energy storage device being installed additional on direct current contact net, the storage of wind-powered electricity generation and photovoltaic electric power being realized when passing through without locomotive, energy storage device release electric power, uninterrupted, continuable power supply is provided together with generation of electricity by new energy station for railway locomotive when having locomotive to pass through.
Embodiment
(1), referring to Fig. 1:According to routine, the soil of Desert Regions Along Railway rail both sides leaves unused for a long time, fails comprehensive development and utilization, and landscape dullness along the line is uninteresting, and dust storm is also especially big.In order to develop wind-powered electricity generation and photovoltaic, appropriateness expands protective zone, for building photovoltaic array and blower fan, had both solved the problems, such as land resources science the present invention, and environment has been beautified again, while generation of electricity by new energy device can also desert improvement as buffering isolation strip.
(2), referring to Fig. 1 and Fig. 2:By convention, the unidirectional current that photovoltaic array sends needs Jing inverters to be converted to alternating current, then collects and boosts, and the unconventional alternating current that blower fan sends needs rectified device and inverter to be converted to alternating current, then collects and boosts;Railway locomotive attracts alternating current power supply from electrical network and ac contactor net, is that traction electric machine and AC load are powered through commutator and inverter.Photovoltaic array 1 and wind-powered electricity generation 2 collect scheme using direct current in the present invention, photovoltaic DC collects the direct current contact net 7 that the Jing photovoltaic generation powers control device 5 of circuit 3 is connected to railway, wind power direct current collects the direct current contact net 7 that the Jing wind-power electricity generations output control device 6 of circuit 4 is connected to railway, the direct current contact net of railway is simultaneously as photovoltaic and the current collection main line of wind-powered electricity generation, and the DC voltage level of the two is identical.Railway locomotive obtains unidirectional current by pantograph 8 from direct current contact net 7, powers directly to DC traction motor 10, and is powered for AC load 12 by locomotive inverter 11.In addition, installing energy storage device 13 on direct current contact net 7, the storage of wind-powered electricity generation and photovoltaic electric power is realized when passing through without locomotive, energy storage device release electric power, uninterrupted, continuable power supply is provided together with generation of electricity by new energy station for railway locomotive when having locomotive to pass through.

Claims (6)

1. a kind of Desert Regions railway power system of utilization wind light mutual complementing power generation, including photovoltaic array, blower fan;It is characterized in that:It also collects circuit including photovoltaic DC(3), wind power direct current collect circuit(4), direct current contact net(7), photovoltaic array(1)Jing photovoltaic DCs collect circuit(3)It is connected to the direct current contact net of insertion(7), blower fan(2)Jing wind power direct currents collect circuit(4)It is connected to the direct current contact net of insertion(7).
2. the Desert Regions railway power system of utilization wind light mutual complementing power generation according to claim 1, it is characterised in that:Railway is arranged with photovoltaic array in middle, railway outside(1)And blower fan(2).
3. the Desert Regions railway power system of utilization wind light mutual complementing power generation according to claim 1 and 2, it is characterised in that:Photovoltaic DC collects circuit(3)With direct current contact net(7)Between be provided with photovoltaic generation power control device(5).
4. the Desert Regions railway power system of utilization wind light mutual complementing power generation according to claim 3, it is characterised in that:Wind power direct current collects circuit(4)With direct current contact net(7)Between be provided with wind-power electricity generation output control device(6).
5. the Desert Regions railway power system of utilization wind light mutual complementing power generation according to claim 4, it is characterised in that:The direct current contact net(7)It is provided with energy storage device(13).
6. a kind of method that Desert Regions railway power system of utilization wind light mutual complementing power generation is powered, it is characterised in that:Along Railway adopts wind light mutual complementing power generation method for arranging, i.e. railway outside to be arranged with photovoltaic array(1)And blower fan(2), photovoltaic array(1)And blower fan(2)Share the straight-flow system of identical electric pressure, railway locomotive(9)By pantograph(8)From direct current contact net(7)Power taking, directly to DC traction motor(10)Power supply, by locomotive inverter(11)For AC load(12)Power supply.
CN201610553377.9A 2016-07-14 2016-07-14 Power supply system and power supply method for railways in desert areas based on wind-photovoltaic complementary power generation Pending CN106611963A (en)

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CN110401399A (en) * 2019-07-17 2019-11-01 贡茅 Honourable biological energy source storage is for charging gasification wisdom transportation system
CN114006458A (en) * 2021-11-04 2022-02-01 西藏农牧学院 Photovoltaic and electrified railway combined power supply device

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108718095A (en) * 2018-05-08 2018-10-30 湖北工业大学 A kind of electric railway energy router based on 81 level of Mixed cascading
CN110401399A (en) * 2019-07-17 2019-11-01 贡茅 Honourable biological energy source storage is for charging gasification wisdom transportation system
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CN114006458A (en) * 2021-11-04 2022-02-01 西藏农牧学院 Photovoltaic and electrified railway combined power supply device

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