CN206633830U - A kind of high-speed railway tractive power supply system of distributed photovoltaic power - Google Patents
A kind of high-speed railway tractive power supply system of distributed photovoltaic power Download PDFInfo
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- CN206633830U CN206633830U CN201720123111.0U CN201720123111U CN206633830U CN 206633830 U CN206633830 U CN 206633830U CN 201720123111 U CN201720123111 U CN 201720123111U CN 206633830 U CN206633830 U CN 206633830U
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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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
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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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T30/00—Transportation of goods or passengers via railways, e.g. energy recovery or reducing air resistance
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Abstract
The utility model discloses a kind of high-speed railway tractive power supply system of distributed photovoltaic power；Photovoltaic array realizes maximal power tracing, boosting and inversion by photovoltaic DC-to-AC converter, and the AC energy that the voltage class of single-phase photovoltaic inverter output is relatively low is incorporated to tractive power supply system after the boosting of photovoltaic step-up transformer；The high-pressure side of photovoltaic step-up transformer is connected with the contact net output port of auto-transformer and midpoint；Can aid in improves the quality of power supply of high-speed railway tractive power supply system；Distributed photovoltaic power electricity can meet traction load demand first, be sent when there is unnecessary electric energy to power system is counter, on the premise of high-speed railway tractive power supply system itself work is not influenceed, realize the grid-connected of photovoltaic electric energy；In addition, high-speed railway rate of traffic flow is big, and the generating rush hour section goodness of fit of its section and distributed photovoltaic power higher service time, solves the problems, such as the consumption of photovoltaic electric energy.
Description
Technical field
Traction power supply technical field is the utility model is related to, more particularly to a kind of high-speed railway of distributed photovoltaic power is led
Draw electric power system.
Background technology
Railway and photovoltaic generation are the two big fields that China currently greatly develops.By the end of the year 2015, China railways
Revenue kilometres have reached 12.1 ten thousand kilometers, and wherein high-speed railway has reached 1.9 ten thousand kilometers.Printed and distributed according to National Development and Reform Committee《In
Long-term railway network planning》, the railway network in China will reach 150,000 kilometers in the year two thousand twenty, the big city of covering more than 80%, wherein
30,000 kilometers of high-speed railway；Railway network scale in 2025 reaches 17.5 ten thousand kilometers, wherein 3.8 ten thousand kilometers of high-speed railway.According to 2007
Year, China formulated《Regenerative resource Long-and Medium-term Development is planned》, the solar power generation total capacity to the year two thousand twenty China is up to
1800000 kWp, and with the fast development for carrying out photovoltaic power generation technology this year, this numeral is expected to reach 100,000 MWp.
The fast development of railway and photovoltaic, for photovoltaic application is provided into opportunity in railway territory, not only contribute to improve
The accounting of new energy in China's consumption energy, while contribute to energy-saving and emission-reduction and the renewable energy utilization of railway territory, have
Good economic value and social value.
The railway in China has point of general fast railway and high-speed railway, and wherein high-speed railway has speed of service height, transport capacity
Greatly, the advantage that energy consumption is low, pollution is small, good in economic efficiency, it is the main flow of future development.The high-speed railway tractive power supply system in China
By the way of AT power supplies, be advantageous to improve the transmission distance of contact net, reduce the voltage power loss of tractive power supply system, subtract
Few electric split-phase.
In the existing high-speed railway tractive power supply system in China, tractive transformer is frequently with V/x connection types；It is but existing
The system that photovoltaic generation is introduced into high-speed railway traction power supply by some, due to the introducing of photovoltaic generation, to original traction power supply
Systematic influence is larger, makes original system can not normal work；In addition, high-speed railway rate of traffic flow is big, existing system can not solve
The consumption problem of photovoltaic electric energy.
Utility model content
To make photovoltaic generating system adapt to high-speed railway tractive power supply system, the utility model proposes a kind of distributed light
The high-speed railway tractive power supply system of power supply is lied prostrate, is transformed suitable for tractive transformer for the existing line of V/x wiring and newly-built
Circuit is built, and universal performance is strong；The normal operation of original tractive power supply system is not influenceed while realizing grid-connected；Solve
The consumption problem of photovoltaic electric energy.
To reach above-mentioned purpose, the technical solution adopted in the utility model is：
A kind of high-speed railway tractive power supply system of distributed photovoltaic power, including the high-speed railway traction of interconnection supply
Electric system and distributed photovoltaic power；
The high-speed railway tractive power supply system include V/x Connection Traction Transformers, contact net, rail, positive feeder and from
Coupling transformer；The high-pressure side of the V/x Connection Traction Transformers is connected with Three-phase Power Systems, and V/x Connection Traction Transformers are low
Pressure side connects contact net and positive feeder respectively, and V/x Connection Traction Transformers midpoint is drawn and is connected to earth mat by rail；Self coupling
Two ports of transformer are connected with contact net and positive feeder respectively, and auto-transformer midpoint is drawn and is connected to the ground by rail
Net；
The distributed photovoltaic power includes photovoltaic array, single-phase photovoltaic inverter and photovoltaic step-up transformer；Photovoltaic battle array
The positive and negative port of row is connected with the positive and negative port of single-phase photovoltaic inverter input, the output end and photovoltaic of single-phase photovoltaic inverter
The low-pressure side connection of step-up transformer, the high-pressure side of photovoltaic step-up transformer is contacting the output of net side with auto-transformer respectively
Port and midpoint are connected.
It is further that the auto-transformer is arranged in the contact net supply arm between two adjacent traction substations
In section；It is spaced between every auto-transformer using an at least auto-transformer.
It is further that the photovoltaic array is made up of multiple photovoltaic modulies connection in series-parallel；
The photovoltaic array is the power supply that electric energy can be provided in system, passes through connection in series-parallel by the less photovoltaic module of capacity
Composition, in photovoltaic array the serial number of photovoltaic module, number in parallel should combine the power of photovoltaic module, photovoltaic DC-to-AC converter capacity,
The combined factors such as installation scale, support cost and the direct current cable cost of photovoltaic generating system consider.
It is further that the single-phase photovoltaic inverter has the basic function of maximal power tracing and inversion；It is simultaneously simultaneous
Has the function of reactive-load compensation harmonic compensation, to improve the quality of power supply of high-speed railway tractive power supply system；
The single-phase photovoltaic inverter is a kind of electricity that direct current energy caused by photovoltaic module is transformed to AC energy
Power electronic installation, its basic function that should have include maximal power tracing (MPPT) and inversion.Maximal power tracing function
Effect is to ensure that photovoltaic array can export electric energy as much as possible, while realizes the boosting of photovoltaic electric energy；Inversion function
Effect is the break-make by controlling inverter switch device, and the photovoltaic electric energy of direct current is exported in the form of alternating current, from
And realize the grid-connected of photovoltaic electric energy；
The single-phase photovoltaic inverter can have reactive-load compensation, the function of harmonic compensation, while photovoltaic electric energy is exported,
Complete or partial reactive-load compensation, harmonic compensation are carried out to traction load electric current, help to reduce the voltage power in supply arm
Loss, improve the quality of power supply of high-speed railway tractive power supply system.
There are following beneficial effects using the technical program：
Built suitable for tractive transformer for the existing line transformation of V/x wiring and newly-built circuit, universal performance is strong；It is high
The distributed photovoltaic power of fast Along Railway accesses system after maximal power tracing, inversion, boosting, by auto-transformer
System, the normal operation of original tractive power supply system is not influenceed while realizing grid-connected；Its service time section with distribution
The generating rush hour section goodness of fit of formula photo-voltaic power supply is higher, solves the problems, such as the consumption of photovoltaic electric energy.
Brief description of the drawings
Fig. 1 is topology outside a kind of high-speed railway tractive power supply system of distributed photovoltaic power provided by the utility model
Structure；
Fig. 2 is the local topology that distributed photovoltaic power passes through auto-transformer access system in the utility model embodiment
Structure；
Wherein, 11 be power system, and 12 be V/x Connection Traction Transformers, and 13 be contact net, and 14 be rail, and 15 be positive feedback
Line, 16 be auto-transformer, and 17 be electric locomotive, and 18 be distributed photovoltaic power；21 be photovoltaic step-up transformer, and 22 be single-phase
Photovoltaic DC-to-AC converter, 23 be photovoltaic array.
Embodiment
In order that the purpose of this utility model, technical scheme and advantage are clearer, it is new to this practicality below in conjunction with the accompanying drawings
Type is further elaborated.
In the present embodiment, referring to Fig. 1 and Fig. 2, the utility model proposes a kind of distributed photovoltaic power high-speed iron
Road tractive power supply system, include the high-speed railway tractive power supply system and distributed photovoltaic power 17 of interconnection.
The high-speed railway tractive power supply system includes V/x Connection Traction Transformers 12, contact net 13, rail 14, positive feedback
Line 15 and auto-transformer 16.
The high-pressure side rated voltage of the V/x Connection Traction Transformers 12 is the voltage of power system 11, with power system
11 3 are connected, and the three-phase voltage of power system 11 is transformed into two-phase voltage by the phase inversion of three-phase-two.The V/x wiring
The rated voltage of the low-pressure side of tractive transformer 12 is 55kV, respectively the power supply section power supply to both direction, its low-pressure side
Two ports are connected with contact net 13 and positive feeder 15 respectively, while midpoint is drawn, and are connected with rail 14, the connection of rail 14 ground
Net；The electric locomotive 17 is 27.5kV power voltage supply by the rated voltage between contact net 13 and rail 14, and passes through steel
Rail 14 and positive feeder 15 flow back.
The auto-transformer 16 is arranged in the supply arm section between two adjacent traction substations, and its quantity is not
It is fixed, between two auto-transformers 16 at intervals.The auto-transformer 16 and the V/x wiring traction voltage transformation
Device 12 is similar, and rated voltage 55kV, two ports are connected with contact net 13 and positive feeder 15 respectively, and midpoint is drawn and is connected to
Rail 14.
The distributed photovoltaic power 17 realized by auto-transformer 16 along the line it is grid-connected, its local topology referring to
Fig. 2.
The photovoltaic array 23 is the power supply that electric energy can be provided in system, by the less photovoltaic module of capacity by going here and there simultaneously
Connection forms, and the serial number of photovoltaic module, number in parallel should combine power, the appearance of photovoltaic DC-to-AC converter of photovoltaic module in photovoltaic array 23
The combined factors such as amount, the installation scale of photovoltaic generating system, support cost and direct current cable cost consider.
The single-phase photovoltaic inverter 22 is that direct current energy caused by photovoltaic array 23 is transformed to AC energy by one kind
Power electronic equipment, its basic function that should have includes maximal power tracing (MPPT) and inversion.Maximal power tracing work(
The effect of energy is to ensure that photovoltaic array 23 can export electric energy as much as possible, while realizes the boosting of photovoltaic electric energy；Inversion
The effect of function is the break-make by controlling internal switch device, by the photovoltaic electric energy of direct current in the form of alternating current it is defeated
Go out, so as to realize the grid-connected of photovoltaic electric energy.
Wherein, the single-phase photovoltaic inverter 22 can have reactive-load compensation, the function of harmonic compensation, in output photovoltaic electric energy
While, complete or partial reactive-load compensation, harmonic compensation are carried out to traction load electric current, help to reduce the electricity in supply arm
The piezoelectricity loss of energy, improve the quality of power supply of high-speed railway tractive power supply system.
The advantages of general principle of the present utility model, principal character and the utility model has been shown and described above.One's own profession
The technical staff of industry is it should be appreciated that the utility model is not restricted to the described embodiments, described in above-described embodiment and specification
Simply illustrate principle of the present utility model, on the premise of the spirit and scope of the utility model is not departed from, the utility model is also
Various changes and modifications are had, these changes and improvements are both fallen within claimed the scope of the utility model.The utility model
Claimed scope is by appended claims and its equivalent thereof.
Claims (4)
- A kind of 1. high-speed railway tractive power supply system of distributed photovoltaic power, it is characterised in that the high speed including interconnection Railway traction power supply system and distributed photovoltaic power (17)；The high-speed railway tractive power supply system includes V/x Connection Traction Transformers (12), contact net (13), rail (14), just Feeder line (15) and auto-transformer (16)；The high-pressure side of the V/x Connection Traction Transformers (12) and power system (11) three-phase Connection, V/x Connection Traction Transformers (12) low-pressure side connect contact net (13) and positive feeder (15) respectively, and V/x wiring traction becomes Draw and earth mat is connected to by rail (14) in depressor (12) midpoint；Two ports of auto-transformer (16) respectively with contact net (13) it is connected with positive feeder (15), auto-transformer (16) midpoint is drawn and is connected to earth mat by rail (14)；The distributed photovoltaic power (17) includes photovoltaic array (23), single-phase photovoltaic inverter (22) and photovoltaic step-up transformer (21)；The positive and negative port of photovoltaic array (23) is connected with the positive and negative port of single-phase photovoltaic inverter (22) input, single-phase photovoltaic The output end of inverter (22) is connected with the low-pressure side of photovoltaic step-up transformer (21), the high-pressure side of photovoltaic step-up transformer (21) It is connected respectively with auto-transformer (16) in the output port of contact net (13) side and midpoint.
- A kind of 2. high-speed railway tractive power supply system of distributed photovoltaic power according to claim 1, it is characterised in that The auto-transformer (16) is arranged in the contact net supply arm section between two adjacent traction substations.
- A kind of 3. high-speed railway tractive power supply system of distributed photovoltaic power according to claim 1, it is characterised in that The photovoltaic array (23) is made up of multiple photovoltaic modulies connection in series-parallel.
- A kind of 4. high-speed railway tractive power supply system of distributed photovoltaic power according to claim 3, it is characterised in that The single-phase photovoltaic inverter (22) has the basic function of maximal power tracing and inversion；Have reactive-load compensation harmonic concurrently simultaneously The function of compensation.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106828123A (en) * | 2017-02-10 | 2017-06-13 | 西南交通大学 | The high-speed railway tractive power supply system and control method of a kind of distributed photovoltaic power |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106828123A (en) * | 2017-02-10 | 2017-06-13 | 西南交通大学 | The high-speed railway tractive power supply system and control method of a kind of distributed photovoltaic power |
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