CN103407383B - Bidirectional interactive type DC (direct-current) traction power supply system base on new energy - Google Patents
Bidirectional interactive type DC (direct-current) traction power supply system base on new energy Download PDFInfo
- Publication number
- CN103407383B CN103407383B CN201310322814.2A CN201310322814A CN103407383B CN 103407383 B CN103407383 B CN 103407383B CN 201310322814 A CN201310322814 A CN 201310322814A CN 103407383 B CN103407383 B CN 103407383B
- Authority
- CN
- China
- Prior art keywords
- bus
- converter
- direct
- current
- way
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000002457 bidirectional effect Effects 0.000 title abstract 6
- 230000002452 interceptive effect Effects 0.000 title abstract 3
- 230000003137 locomotive effect Effects 0.000 claims abstract description 26
- 239000000446 fuel Substances 0.000 claims description 35
- 230000005855 radiation Effects 0.000 claims description 21
- 239000003990 capacitor Substances 0.000 claims description 6
- 230000003993 interaction Effects 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 abstract 2
- 239000010959 steel Substances 0.000 abstract 2
- 230000005611 electricity Effects 0.000 description 14
- 238000004804 winding Methods 0.000 description 9
- 230000008859 change Effects 0.000 description 6
- 238000004146 energy storage Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 3
- 230000010363 phase shift Effects 0.000 description 3
- 238000010248 power generation Methods 0.000 description 3
- 239000002028 Biomass Substances 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
A bidirectional interactive type DC traction power supply system base on new energy is provided with more than two traction substations, wherein more than one transformer connected with an AC (alternating-current) bus is connected onto each traction substation; the other side of the transformer is connected with a bidirectional AC-DC converter; the other side of the bidirectional AC-DC converter is connected to a DC bus located on the traction substation; the DC bus is connected with a contact net and a steel rail; an electric locomotive is connected with the contact net and the steel rail; a section post of the DC bus is connected to the contact net of the traction substation; a DC new energy system comprising an electric automobile charge-discharge system, a distributed type power supply and more than one low-voltage DC micro-grid is arranged on the DC bus between two adjacent traction substations; and a DC circular micro-grid is formed in one power supply section. According to the bidirectional interactive type DC traction power supply system base on the new energy, distributed type new energy is fully used, and braking energy of the electric locomotive is recycled; the power supply reliability of the DC traction power supply system is improved; and bidirectional interaction of electric energy is realized.
Description
Technical field
The present invention relates to a kind of DC traction power-supply system.Particularly relating to a kind of distributed power source, changing electricity is the inter-act DC traction power-supply system based on new forms of energy that main electronlmobil charge-discharge system combines with DC traction power-supply system.
Background technology
Along with the fast development of economy and urbanization process, energy shock, environmental pollution and traffic congestion have become the serious problems that the world today faces.Urban electric vehicular traffic (subway, tramway train and trackless trolley car) and electronlmobil can alleviate the day by day serious traffic congestion in city, reduce the consumption of limited fossil fuel, reduce aerial contamination, realizing the sustainable development in energy-saving and emission-reduction and city, is the main traffic instrument that future city is greatly developed.
The charge system that the development need of electronlmobil is corresponding, conventional charge mode has normal charge, fast charge and power batteries fast replacement system (abbreviation changes electricity) three kinds.For urban public transport elec. vehicle, changing electricity is a kind of well charge mode.Charging system for electric automobile not only needs huge construction cost, and can produce many harmful effects to electric system.Meanwhile, electric automobile power battery is also the energy storage device that a capacity is huge.
Traditional DC traction power-supply system adopts diode rectifier to power usually, and traction substation has one way feeding and two way feeding to the mode that contact system is powered.The voltage class of the DC supply of China's national regulations has 750V and 1500V two kinds.The braking energy of electric locomotive consumes usually in braking resistor, and this not only causes the waste of energy, but also can cause the rising of tunnel temperature, increases the burden of temperature control system, causes the waste of the energy further.The recycling of electric locomotive braking energy is the direction of tractive power supply system future development.
As shown in Figure 1, existing DC traction power-supply system includes: one or more the traction substation 1 for providing direct current energy to electric locomotive 2, and this traction substation 1 adopts traditional diode rectification DC traction power-supply system.Each traction substation 1 is made up of voltage transformer 11, rectifier 12, DC bus 13, contact system 14, rail 15 and section post 16.Wherein, voltage transformer 11 can be two-winding transformer, the three winding transformer of three winding transformer or former limit phase shift ± 7.5 ° that adopt extend-triangle to connect.Rectifier 12 can be six Pulses Rectifiers, 12 Pulses Rectifiers or 24 Pulses Rectifiers.
Traditional DC traction power-supply system is during electric locomotive runs low ebb and stoppage in transit, and the power factor of AC Bulk Supply Substation is very low, needs to take Measures of Reactive Compensation.
Economic fast development facilitates the quick growth of electricity needs, and traditional centralized bulk power grid cost is high, operation difficulty is large, is difficult to the requirement meeting the more and more higher safety and reliability of user.Distributed power generation is compared with centralized generating, have pollution less, the advantage such as energy utilization rate is high, place of erection is flexible, save power transmission and distribution resource and over-the-road expense, decrease the line losses concentrating transmission of electricity, decrease electrical network total volume, improve electrical network peak valley performance, improve reliability, being that the strong of bulk power grid supplements and effectively support, is one of development tendency of electric system.
Distributed power source comprises solar-energy photo-voltaic cell, aerogenerator, miniature gas turbine, fuel cell and biomass power generation etc.
Distributed power source unit cost of access is high, control difficulty.It is a uncontrollable source relative to bulk power grid, therefore bulk power grid often take to limit, the mode of isolation to dispose distributed power source, to reducing its impact to bulk power grid, this just greatly limit the utilization of distributed power source.
The space making full use of urban electric public bus network can development utilization such as solar-energy photo-voltaic cell, miniature gas turbine and fuel cell distributed power supply.
Micro-capacitance sensor is a kind of organic system be jointly made up of load, micro battery (distributed power source namely in micro-capacitance sensor, as photovoltaic generation, wind-power electricity generation etc.), closed-center system and electric and electronic power converting means; The power supply of micro-capacitance sensor inside is responsible for the conversion of energy primarily of power electronic devices, and provides required control; Micro-capacitance sensor effectively can solve the problem of above-mentioned distributed power source access bulk power grid, coordinates the contradiction between bulk power grid and distributed power source.
Micro-capacitance sensor can be divided into interchange micro-capacitance sensor, direct-current grid, high frequency micro-capacitance sensor and alternating current-direct current mixing micro-capacitance sensor.Because the solar-energy photo-voltaic cell in distributed power source and fuel cell this as direct current, although and aerogenerator, miniature gas turbine are different the exchanging of frequency with biomass power generation etc., can be direct current through a rectifying conversion.Direct-current grid has without surface action, loss is little, efficiency is high, without the need to reactive-load compensation, do not exist the intrinsic stable problem of ac power supply system, fed distance and power also by electric system synchronized operation stability restriction and be easy to the advantages such as control, there is wide development and application prospect in electric system.
Summary of the invention
Technical matters to be solved by this invention is, a kind of inter-act DC traction power-supply system based on new forms of energy is provided, thus achieve effective utilization of distributed power source and the recovery of electric locomotive braking energy, reduce the fluctuation range of existing DC traction power-supply system vdc, improve the power factor of DC traction power-supply system AC Bulk Supply Substation, reduce harmonic wave, improve the reliability of DC traction power-supply system, reduce the construction cost of charging system for electric automobile.
The technical solution adopted in the present invention is: a kind of inter-act DC traction power-supply system based on new forms of energy, include plural for providing the traction substation of direct current energy to electric locomotive, each traction substation has the more than one voltage transformer be connected on ac bus, the opposite side correspondence of each voltage transformer connects a two-way exchange-DC converter, the opposite side of all two-way exchange-DC converter is all connected on the DC bus of be positioned at traction substation, the both positive and negative polarity of described DC bus is connected respectively contact system and rail, the both positive and negative polarity of described electric locomotive is connected respectively contact system and rail, the contact system of each traction substation is connected to a section post, the two ends of described section post also connect the positive pole of corresponding DC bus respectively, DC bus between adjacent two traction substations is provided with by electronlmobil charge-discharge system, the direct current new energy resources system that the low-voltage direct micro-capacitance sensor of distributed power source and more than 1 is formed, described direct current new energy resources system is connected by the DC bus of high voltage dc bus with adjacent two traction substations, thus in a power supply zone, form direct current annular micro-capacitance sensor, wherein said electronlmobil charge-discharge system is made up of the two-way DC-DC charge-discharge machine for connecting electric automobile electrokinetic cell of more than 1.
The mouth also super capacitors in parallel of the connecting electric automobile electrokinetic cell of described each two-way DC-DC charge-discharge machine.
Described distributed power source includes more than one miniature gas turbine, more than one aerogenerator, more than one fuel cell and more than one solar-energy photo-voltaic cell, wherein, each miniature gas turbine is connected high voltage dc bus with each aerogenerator each via an one-way communication-DC converter, and each fuel cell is connected high voltage dc bus with each solar-energy photo-voltaic cell each via a Unidirectional direct-current-DC converter.
Described low-voltage direct micro-capacitance sensor includes the annular low pressure DC bus be connected to by a two-way DC-DC converter on high voltage dc bus, more than one closed-center system, more than one miniature gas turbine, more than one solar-energy photo-voltaic cell, more than one fuel cell, more than one aerogenerator, more than one Unidirectional direct-current-AC converter, more than one two-way DC-DC charge-discharge machine and more than one Unidirectional direct-current-DC converter, wherein, each solar-energy photo-voltaic cell and each fuel cell are respectively connected annular low-voltage direct bus by a Unidirectional direct-current-DC converter respectively, each miniature gas turbine and each aerogenerator are respectively connected annular low-voltage direct bus by an one-way communication-DC converter respectively, each closed-center system respectively connects annular low-voltage direct bus by a two-way DC-DC converter, the output of each Unidirectional direct-current-AC converter connects AC load, the electrokinetic cell of the opposite side connecting electric automobile of each two-way DC-DC charge-discharge machine, the output of each Unidirectional direct-current-DC converter connects DC load.
Described low-voltage direct micro-capacitance sensor includes the radiation low-voltage direct bus be connected to by a two-way DC-DC converter on high voltage dc bus, more than one closed-center system, more than one miniature gas turbine, more than one solar-energy photo-voltaic cell, more than one fuel cell, more than one aerogenerator, more than one Unidirectional direct-current-AC converter, more than one two-way DC-DC charge-discharge machine and more than one Unidirectional direct-current-DC converter, wherein, each solar-energy photo-voltaic cell is respectively connected radiation low-voltage direct bus by a Unidirectional direct-current-DC converter respectively with each fuel cell, each miniature gas turbine is respectively connected radiation low-voltage direct bus by an one-way communication-DC converter respectively with each aerogenerator, each closed-center system respectively connects radiation low-voltage direct bus by a two-way DC-DC converter, the output of each Unidirectional direct-current-AC converter connects AC load, the electrokinetic cell of the opposite side connecting electric automobile of each two-way DC-DC charge-discharge machine, the output of each Unidirectional direct-current-DC converter connects DC load.
A kind of inter-act DC traction power-supply system based on new forms of energy, include one for providing the traction substation of direct current energy to electric locomotive, traction substation is provided with the more than one voltage transformer be connected on ac bus, the opposite side correspondence of each voltage transformer connects a two-way exchange-DC converter, the opposite side of described two-way exchange-DC converter is connected on the DC bus of traction substation, the both positive and negative polarity of described DC bus is connected respectively contact system and rail, the both positive and negative polarity of described electric locomotive is connected respectively contact system and rail, the DC bus of traction substation is provided with by electronlmobil charge-discharge system, the direct current new energy resources system that the low-voltage direct micro-capacitance sensor of distributed power source and more than 1 is formed, described direct current new energy resources system is connected with the DC bus of traction substation by high voltage dc bus, thus in a power supply zone, form direct current annular micro-capacitance sensor, wherein said electronlmobil charge-discharge system is made up of the two-way DC-DC charge-discharge machine for connecting electric automobile electrokinetic cell of more than 1.
The mouth also super capacitors in parallel of the connecting electric automobile electrokinetic cell of described each two-way DC-DC charge-discharge machine.
Described distributed power source includes more than one miniature gas turbine, more than one aerogenerator, more than one fuel cell and more than one solar-energy photo-voltaic cell, wherein, each miniature gas turbine is connected high voltage dc bus with each aerogenerator each via an one-way communication-DC converter, and each fuel cell is connected high voltage dc bus with each solar-energy photo-voltaic cell each via a Unidirectional direct-current-DC converter.
Described low-voltage direct micro-capacitance sensor includes the annular low pressure DC bus be connected to by a two-way DC-DC converter on high voltage dc bus, more than one closed-center system, more than one miniature gas turbine, more than one solar-energy photo-voltaic cell, more than one fuel cell, more than one aerogenerator, more than one Unidirectional direct-current-AC converter, more than one two-way DC-DC charge-discharge machine and more than one Unidirectional direct-current-DC converter, wherein, each solar-energy photo-voltaic cell and each fuel cell are respectively connected annular low-voltage direct bus by a Unidirectional direct-current-DC converter respectively, each miniature gas turbine and each aerogenerator are respectively connected annular low-voltage direct bus by an one-way communication-DC converter respectively, each closed-center system respectively connects annular low-voltage direct bus by a two-way DC-DC converter, the output of each Unidirectional direct-current-AC converter connects AC load, the electrokinetic cell of the opposite side connecting electric automobile of each two-way DC-DC charge-discharge machine, the output of each Unidirectional direct-current-DC converter connects DC load.
Described low-voltage direct micro-capacitance sensor includes the radiation low-voltage direct bus be connected to by a two-way DC-DC converter on high voltage dc bus, more than one closed-center system, more than one miniature gas turbine, more than one solar-energy photo-voltaic cell, more than one fuel cell, more than one aerogenerator, more than one Unidirectional direct-current-AC converter, more than one two-way DC-DC charge-discharge machine and more than one Unidirectional direct-current-DC converter, wherein, each solar-energy photo-voltaic cell is respectively connected radiation low-voltage direct bus by a Unidirectional direct-current-DC converter respectively with each fuel cell, each miniature gas turbine is respectively connected radiation low-voltage direct bus by an one-way communication-DC converter respectively with each aerogenerator, each closed-center system respectively connects radiation low-voltage direct bus by a two-way DC-DC converter, the output of each Unidirectional direct-current-AC converter connects AC load, the electrokinetic cell of the opposite side connecting electric automobile of each two-way DC-DC charge-discharge machine, the output of each Unidirectional direct-current-DC converter connects DC load.
A kind of inter-act DC traction power-supply system based on new forms of energy of the present invention, based on distributed power source, to change electricity be the direct-current grid that main electronlmobil charge-discharge system and two-way exchange-direct current (AC-DC) grid-connection converter are formed, and achieves effective utilization of distributed new and the recovery of electric locomotive braking energy; Reduce the fluctuation of DC bus-bar voltage; Utilize pulse duration modulation (PWM) to control to improve the power factor of AC Bulk Supply Substation, decrease harmonic wave; If distributed power source and to change electricity be that main electronlmobil charge-discharge system capacity is enough large, system can islet operation, thus improves the power supply reliability of DC traction power-supply system; Make full use of the charging that DC traction power-supply system achieves electronlmobil, and then decrease the construction cost of charging system for electric automobile; Achieved the two-way interaction of electric energy by two-way exchange-direct current (AC-DC) grid-connection converter, there is the effect of " peak load shifting ", improve the economy of whole system.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing DC traction power-supply system;
Fig. 2 is the structural representation of the inter-act DC traction power-supply system based on new forms of energy of two way feeding;
Fig. 3 is the inter-act DC traction power-supply system structural representation based on new forms of energy of one way feeding;
Fig. 4 is annular low pressure direct-current grid structural representation;
Fig. 5 is radiation low-voltage direct micro-capacitance sensor structural representation.
In figure
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, a kind of inter-act DC traction power-supply system based on new forms of energy of the present invention is described in detail.
A kind of inter-act DC traction power-supply system based on new forms of energy of the present invention, be based on distributed power source, change electronlmobil charge-discharge system that electricity is master and the direct-current grid that DC traction power-supply system is formed, propose a kind of inter-act DC traction power-supply system.
For the inter-act DC traction power-supply system in parallel grid-connected based on two-way exchange-direct current (AC-DC) changer of two way feeding, as shown in Figure 2, a kind of inter-act DC traction power-supply system based on new forms of energy of the present invention, include plural for providing the traction substation 1 of direct current energy to electric locomotive 2, each traction substation 1 has the more than one voltage transformer 11 be connected on ac bus 5, the opposite side correspondence of each voltage transformer 11 connects a two-way exchange-DC converter 12, the opposite side of all two-way exchange-DC converter 12 is all connected on the DC bus 13 of be positioned at traction substation 1, the both positive and negative polarity of described DC bus 13 is connected respectively contact system 14 and rail 15, the both positive and negative polarity of described electric locomotive 2 is connected respectively contact system 14 and rail 15, electric locomotive is the common load of two traction substations.The contact system 14 of each traction substation 1 is connected to a section post 16, the two ends of described section post 16 also connect the positive pole of corresponding DC bus 13 respectively.Wherein, voltage transformer can be two-winding transformer, the three winding transformer of three winding transformer or former limit phase shift ± 7.5 ° that adopt extend-triangle to connect.Two-way exchange-direct current (AC-DC) changer both can be voltage source converter, also can be current-source convertor; Its modulation system can be pulse duration modulation (PWM); Although each traction substation gives two voltage transformers, two two-way exchange-direct current (AC-DC) changers in figure, its number is not only limited to these.DC bus 13 between adjacent two traction substations 1 is provided with by electronlmobil charge-discharge system, the direct current new energy resources system 3 that the low-voltage direct micro-capacitance sensor 31 of distributed power source and more than 1 is formed, described direct current new energy resources system 3 is connected with the DC bus 13 of adjacent two traction substations 1 by high voltage dc bus 4, thus in a power supply zone, form direct current annular micro-capacitance sensor, wherein said electronlmobil charge-discharge system changes electricity for main electronlmobil charge-discharge system, be made up of the two-way DC-DC charge-discharge machine 32 for connecting electric automobile electrokinetic cell of more than 1.For improving the dynamic property of system, the mouth also super capacitors in parallel (not shown in FIG.) of the connecting electric automobile electrokinetic cell of described each two-way DC-DC charge-discharge machine 32.
Described distributed power source includes more than one miniature gas turbine 33, more than one aerogenerator 35, more than one fuel cell 37 and more than one solar-energy photo-voltaic cell 39, wherein, each miniature gas turbine 33 is connected high voltage dc bus 4 with each aerogenerator 35 each via an one-way communication-DC converter 34/36, and each fuel cell 37 is connected high voltage dc bus 4 with each solar-energy photo-voltaic cell 39 each via a Unidirectional direct-current-DC converter 38/40.Solar-energy photo-voltaic cell 39 and aerogenerator 35 can adopt maximal power tracing to control according to different situations, and maximum current also can be adopted to control; One-way communication-DC converter 34/36, Unidirectional direct-current-DC converter 38/40 control to adopt master & slave control, equity controls or droop control, also can adopt hierarchical control.Because map space limit, in figure, only depict one representatively for four kinds of distributed power sources; In fact, the kind of distributed power source and quantity do not limit.
Low-voltage direct micro-capacitance sensor is connected with the DC bus 13 being connected contact system with high voltage dc bus 4 by two-way DC-DC (DC-DC) changer 312 successively, it both may operate in and net state, also may operate in from net (or isolated island) state, its version both can be ring type (as Fig. 5), also can be emanant or other forms.
For the inter-act DC traction power-supply system in parallel grid-connected based on two-way exchange-direct current (AC-DC) changer of one way feeding, as shown in Figure 3, a kind of inter-act DC traction power-supply system based on new forms of energy of the present invention, include one for providing the traction substation 1 of direct current energy to electric locomotive 2, traction substation 1 is provided with the more than one voltage transformer 11 be connected on ac bus 5, the opposite side correspondence of each voltage transformer 11 connects a two-way exchange-DC converter 12, the opposite side of described two-way exchange-DC converter 12 is connected on the DC bus 13 of traction substation 1, the both positive and negative polarity of described DC bus 13 is connected respectively contact system 14 and rail 15.Wherein, voltage transformer can be two-winding transformer, the three winding transformer of three winding transformer or former limit phase shift ± 7.5 ° that adopt extend-triangle to connect.Two-way exchange-direct current (AC-DC) changer 12 both can be voltage source converter, also can be current-source convertor; Its modulation system can be pulse duration modulation (PWM); Although traction substation gives two voltage transformers, a rectifier and two-way exchange-direct current (AC-DC) changer in figure, its number is not only limited to these.The both positive and negative polarity of described electric locomotive 2 is connected respectively contact system 14 and rail 15, and electric locomotive is the load of traction substation.The DC bus 13 of traction substation 1 is provided with by changing that electricity is main electronlmobil charge-discharge system, direct current new energy resources system 3 that the low-voltage direct micro-capacitance sensor 31 of distributed power source and more than 1 is formed, described direct current new energy resources system 3 is connected with the DC bus 13 of traction substation 1 by high voltage dc bus 4, thus in a power supply zone, forming direct current annular micro-capacitance sensor, wherein said electronlmobil charge-discharge system is made up of the two-way DC-DC charge-discharge machine 32 for connecting electric automobile electrokinetic cell of more than 1.For improving the dynamic property of system, the mouth also super capacitors in parallel of the connecting electric automobile electrokinetic cell of described each two-way DC-DC charge-discharge machine 32.
Described distributed power source includes more than one miniature gas turbine 33, more than one aerogenerator 35, more than one fuel cell 37 and more than one solar-energy photo-voltaic cell 39, wherein, each miniature gas turbine 33 is connected high voltage dc bus 4 with each aerogenerator 35 each via an one-way communication-DC converter 34/36, and each fuel cell 37 is connected high voltage dc bus 4 with each solar-energy photo-voltaic cell 39 each via a Unidirectional direct-current-DC converter 38/40.
Solar-energy photo-voltaic cell 39 and aerogenerator 35 can adopt maximal power tracing to control according to different situations, and maximum current also can be adopted to control; The control of one-way communication-DC converter 34/36 and Unidirectional direct-current-DC converter 38/40 can adopt master & slave control, equity controls or droop control, also can adopt hierarchical control.Because map space limit, in figure, only depict one representatively for four kinds of distributed power sources; In fact, the kind of distributed power source and quantity do not limit.
Low-voltage direct micro-capacitance sensor is connected with the DC bus 13 being connected contact system with high voltage dc bus 4 by two-way DC-DC (DC-DC) changer 312 successively, it both may operate in and net state, also may operate in from net (or isolated island) state, its version both can be ring type (as Fig. 5), also can be emanant or other forms.
The inter-act DC traction power-supply system based on new forms of energy shown in Fig. 3, had both been applicable to the inter-act DC traction power-supply system of one way feeding, was also applicable to the inter-act DC traction power-supply system of two way feeding.
As shown in Figure 4, Fig. 2 in the present invention, low-voltage direct micro-capacitance sensor 31 shown in Fig. 3, include the annular low pressure DC bus 311a be connected to by a two-way DC-DC converter 312 on high voltage dc bus 4, more than one closed-center system 3110, more than one miniature gas turbine 316, more than one solar-energy photo-voltaic cell 317, more than one fuel cell 318, more than one aerogenerator 319, more than one Unidirectional direct-current-interchange (DC-AC) changer 3111, more than one two-way DC-DC (DC-DC) charge-discharge machine 3112 and more than one Unidirectional direct-current-direct current (DC-DC) changer 3113, wherein, each solar-energy photo-voltaic cell 317 is respectively connected annular low-voltage direct bus 311a by Unidirectional direct-current-direct current (DC-DC) changer 3117/3116 respectively with each fuel cell 318, each miniature gas turbine 316 is respectively connected annular low-voltage direct bus 311a by one-way communication-direct current (AC-DC) changer 3114/3115 respectively with each aerogenerator 319, each closed-center system 3110 respectively connects annular low-voltage direct bus 311a by two-way DC-DC (DC-DC) changer 3118, the output of each Unidirectional direct-current-interchange (DC-AC) changer 3111 connects AC load 313, the electrokinetic cell of the opposite side connecting electric automobile 314 of each two-way DC-DC (DC-DC) charge-discharge machine 3112, the output of each Unidirectional direct-current-direct current (DC-DC) changer 3113 connects DC load 315.
Above-mentioned low-voltage direct micro-capacitance sensor is connected with the DC bus 13 being connected contact system with high voltage dc bus 4 by two-way DC-DC (DC-DC) changer 312 successively.Closed-center system 3110 both can be batteries to store energy, also can be ultracapacitor energy storage or other energy storage devices; DC load 315 both can be LED illumination device, also can be electronic equipment for consumption or other DC load.AC load 313 both can be air-conditioning, also can be laundry machine or other AC load.Two-way DC-DC (DC-DC) electronlmobil charge-discharge machine both can be pure electric automobile discharge and recharge, also can be plug-in hybrid-power automobile or electrokinetic cell discharge and recharge.
As shown in Figure 5, Fig. 2 in the present invention, low-voltage direct micro-capacitance sensor 31 shown in Fig. 3, can also be include the radiation low-voltage direct bus 311b be connected to by a two-way DC-DC converter 312 on high voltage dc bus 4, more than one closed-center system 3110, more than one miniature gas turbine 316, more than one solar-energy photo-voltaic cell 317, more than one fuel cell 318, more than one aerogenerator 319, more than one Unidirectional direct-current-interchange (DC-AC) changer 3111, more than one two-way DC-DC (DC-DC) charge-discharge machine 3112 and more than one Unidirectional direct-current-direct current (DC-DC) changer 3113, wherein, each solar-energy photo-voltaic cell 317 is respectively connected radiation low-voltage direct bus 311b by Unidirectional direct-current-direct current (DC-DC) changer 3117/3116 respectively with each fuel cell 318, each miniature gas turbine 316 is respectively connected radiation low-voltage direct bus 311b by one-way communication-direct current (AC-DC) changer 3114/3115 respectively with each aerogenerator 319, each closed-center system 3110 respectively connects radiation low-voltage direct bus 311b by two-way DC-DC (DC-DC) changer 3118, the output of each Unidirectional direct-current-interchange (DC-AC) changer 3111 connects AC load 313, the electrokinetic cell of the opposite side connecting electric automobile 314 of each two-way DC-DC (DC-DC) charge-discharge machine 3112, the output of each Unidirectional direct-current-direct current (DC-DC) changer 3113 connects DC load 315.
Above-mentioned low-voltage direct micro-capacitance sensor is connected with the DC bus 13 being connected contact system with high voltage dc bus 4 by two-way DC-DC (DC-DC) changer 312 successively.Closed-center system both can be batteries to store energy, also can be ultracapacitor energy storage or other energy storage devices; DC load both can be LED illumination device, also can be electronic equipment for consumption or other DC load.AC load both can be air-conditioning, also can be laundry machine or other AC load.Two-way DC-DC (DC-DC) electronlmobil charge-discharge machine both can be pure electric automobile discharge and recharge, also can be plug-in hybrid-power automobile or electrokinetic cell discharge and recharge.
Low-voltage direct micro-capacitance sensor 31 of the present invention is connected with the DC bus 13 being connected contact system with high voltage dc bus 4 by two-way DC-DC (DC-DC) changer 312 successively, it both may operate in and net state, also may operate in from net (or isolated island) state, its version both can be ring type (as Fig. 5), also can be emanant or other forms.Two-way exchange-direct current (AC-DC) grid-connection converter, distributed power source, electronlmobil charge-discharge system, low-voltage direct micro-capacitance sensor are connected by the DC bus of DC bus with two traction substations, thus in a power supply zone, form direct current annular micro-capacitance sensor.
A kind of inter-act DC traction power-supply system based on new forms of energy of the present invention, by two-way exchange-direct current (AC-DC) changer, distributed electrical source converter and to change electricity be the braking energy that the cooperation control of main electronlmobil charge-discharge system makes full use of distributed power source and electric locomotive, maintain DC bus-bar voltage and be stabilized in the scope of requirement.When DC traction power-supply system electric energy is superfluous, DC bus-bar voltage raises and reaches limited voltage threshold, electronlmobil charge-discharge system utilizes unnecessary electric energy by charge-discharge machine to electric automobile power battery charging, unnecessary electric energy in addition feeds back to AC network by two-way exchange-direct current (AC-DC) changer (being now inverter), exceedes limit value to avoid DC bus-bar voltage; When DC traction power-supply system electric energy is not enough, DC bus-bar voltage is reduced to limited voltage threshold, AC energy is become direct current energy to DC bus powered by two-way exchange-direct current (AC-DC) changer (being now rectifier), electric automobile power battery by charge-discharge machine to DC bus powered, to avoid DC bus-bar voltage lower than limit value, maintain the power balance of system.By appropriate design and cooperation control, what not only can realize the inter-act DC traction power-supply system the proposed highly reliable power supply of high quality of electric locomotive, the recycling of electric locomotive braking energy and DC bus-bar voltage fluctuated stabilizes, and can realize the charging of electric automobile power battery and effective utilization of distributed new.
If distributed power source and to change electricity be that main electronlmobil charge-discharge system capacity is enough large, then direct current annular micro-capacitance sensor not only may operate in and net state, and may operate in from net (or isolated island) state.When ac power supply system fault, may operate in from net (or isolated island) state, by distributed power source with to change electricity be main electronlmobil charge-discharge system is that electric locomotive is powered, thus improve the reliability of DC traction power-supply system.
In system, the control of changer both can adopt master & slave control, equity also can be adopted to control or droop control, can adopt hierarchical control again.In system, control command can be given by communication system by control center, also can be given according to the voltage and current of system.
A kind of based in the inter-act DC traction power-supply system of new forms of energy, the control of changer and structure can have many kinds, are specifically determined by real system.
Claims (6)
1. the inter-act DC traction power-supply system based on new forms of energy, include plural for providing the traction substation (1) of direct current energy to electric locomotive (2), it is characterized in that, each traction substation (1) has the more than one voltage transformer (11) be connected on ac bus (5), the opposite side correspondence of each voltage transformer (11) connects the side of a two-way exchange-DC converter (12), the opposite side of all two-way exchange-DC converter (12) is all connected on the DC bus (13) of be positioned at traction substation (1), the both positive and negative polarity of described DC bus (13) is connected respectively contact system (14) and rail (15), the both positive and negative polarity of described electric locomotive (2) is connected respectively contact system (14) and rail (15), the contact system (14) of each traction substation (1) is connected to a section post (16), the two ends of described section post (16) also connect the positive pole of corresponding DC bus (13) respectively, DC bus (13) between adjacent two traction substations (1) is provided with by electronlmobil charge-discharge system, the direct current new energy resources system (3) that the low-voltage direct micro-capacitance sensor (31) of distributed power source and more than 1 is formed, described direct current new energy resources system (3) is connected with the DC bus (13) of adjacent two traction substations (1) by high voltage dc bus (4), thus in a power supply zone, form direct current annular micro-capacitance sensor, wherein said electronlmobil charge-discharge system is made up of the two-way DC-DC charge-discharge machine (32) for connecting electric automobile electrokinetic cell of more than 1, described distributed power source includes more than one miniature gas turbine (33), more than one aerogenerator (35), more than one fuel cell (37) and more than one solar-energy photo-voltaic cell (39), wherein, each miniature gas turbine (33) is connected high voltage dc bus (4) with each aerogenerator (35) each via an one-way communication-DC converter (34/36), each fuel cell (37) is connected high voltage dc bus (4) with each solar-energy photo-voltaic cell (39) each via a Unidirectional direct-current-DC converter (38/40), the mouth also super capacitors in parallel of the connecting electric automobile electrokinetic cell of described each two-way DC-DC charge-discharge machine (32).
2. a kind of inter-act DC traction power-supply system based on new forms of energy according to claim 1, it is characterized in that, described low-voltage direct micro-capacitance sensor (31) includes the annular low pressure DC bus (311a) be connected to by a two-way DC-DC converter (312) on high voltage dc bus (4), more than one closed-center system (3110), more than one miniature gas turbine (316), more than one solar-energy photo-voltaic cell (317), more than one fuel cell (318), more than one aerogenerator (319), more than one Unidirectional direct-current-AC converter (3111), more than one two-way DC-DC charge-discharge machine (3112) and more than one Unidirectional direct-current-DC converter (3113), wherein, each solar-energy photo-voltaic cell (317) is respectively connected annular low-voltage direct bus (311a) by a Unidirectional direct-current-DC converter (3117/3116) respectively with each fuel cell (318), each miniature gas turbine (316) is respectively connected annular low-voltage direct bus (311a) by an one-way communication-DC converter (3114/3115) respectively with each aerogenerator (319), each closed-center system (3110) respectively connects annular low-voltage direct bus (311a) by a two-way DC-DC converter (3118), the output of each Unidirectional direct-current-AC converter (3111) connects AC load (313), the electrokinetic cell of each two-way DC-DC charge-discharge machine (3112) connecting electric automobile (314), the output of each Unidirectional direct-current-DC converter (3113) connects DC load (315).
3. a kind of inter-act DC traction power-supply system based on new forms of energy according to claim 1, it is characterized in that, described low-voltage direct micro-capacitance sensor (31) includes the radiation low-voltage direct bus (311b) be connected to by a two-way DC-DC converter (312) on high voltage dc bus (4), more than one closed-center system (3110), more than one miniature gas turbine (316), more than one solar-energy photo-voltaic cell (317), more than one fuel cell (318), more than one aerogenerator (319), more than one Unidirectional direct-current-AC converter (3111), more than one two-way DC-DC charge-discharge machine (3112) and more than one Unidirectional direct-current-DC converter (3113), wherein, each solar-energy photo-voltaic cell (317) is respectively connected radiation low-voltage direct bus (311b) by a Unidirectional direct-current-DC converter (3117/3116) respectively with each fuel cell (318), each miniature gas turbine (316) is respectively connected radiation low-voltage direct bus (311b) by an one-way communication-DC converter (3114/3115) respectively with each aerogenerator (319), each closed-center system (3110) respectively connects radiation low-voltage direct bus (311b) by a two-way DC-DC converter (3118), the output of each Unidirectional direct-current-AC converter (3111) connects AC load (313), the electrokinetic cell of the opposite side connecting electric automobile (314) of each two-way DC-DC charge-discharge machine (3112), the output of each Unidirectional direct-current-DC converter (3113) connects DC load (315).
4. the inter-act DC traction power-supply system based on new forms of energy, include one for providing the traction substation (1) of direct current energy to electric locomotive (2), it is characterized in that, traction substation (1) is provided with more than one side and is connected to voltage transformer (11) on ac bus (5), the opposite side correspondence of each voltage transformer (11) connects the side of a two-way exchange-DC converter (12), the opposite side of described two-way exchange-DC converter (12) is connected on the DC bus (13) of traction substation (1), the both positive and negative polarity of described DC bus (13) is connected respectively contact system (14) and rail (15), the both positive and negative polarity of described electric locomotive (2) is connected respectively contact system (14) and rail (15), the DC bus (13) of traction substation (1) is provided with by electronlmobil charge-discharge system, the direct current new energy resources system (3) that the low-voltage direct micro-capacitance sensor (31) of distributed power source and more than 1 is formed, described direct current new energy resources system (3) is connected with the DC bus (13) of traction substation (1) by high voltage dc bus (4), thus in a power supply zone, form direct current annular micro-capacitance sensor, wherein said electronlmobil charge-discharge system is made up of the two-way DC-DC charge-discharge machine (32) for connecting electric automobile electrokinetic cell of more than 1, described distributed power source includes more than one miniature gas turbine (33), more than one aerogenerator (35), more than one fuel cell (37) and more than one solar-energy photo-voltaic cell (39), wherein, each miniature gas turbine (33) is connected high voltage dc bus (4) with each aerogenerator (35) each via an one-way communication-DC converter (34/36), each fuel cell (37) is connected high voltage dc bus (4) with each solar-energy photo-voltaic cell (39) each via a Unidirectional direct-current-DC converter (38/40), the mouth also super capacitors in parallel of the connecting electric automobile electrokinetic cell of described each two-way DC-DC charge-discharge machine (32).
5. a kind of inter-act DC traction power-supply system based on new forms of energy according to claim 4, it is characterized in that, described low-voltage direct micro-capacitance sensor (31) includes the annular low pressure DC bus (311a) be connected to by a two-way DC-DC converter (312) on high voltage dc bus (4), more than one closed-center system (3110), more than one miniature gas turbine (316), more than one solar-energy photo-voltaic cell (317), more than one fuel cell (318), more than one aerogenerator (319), more than one Unidirectional direct-current-AC converter (3111), more than one two-way DC-DC charge-discharge machine (3112) and more than one Unidirectional direct-current-DC converter (3113), wherein, each solar-energy photo-voltaic cell (317) is respectively connected annular low-voltage direct bus (311a) by a Unidirectional direct-current-DC converter (3117/3116) respectively with each fuel cell (318), each miniature gas turbine (316) is respectively connected annular low-voltage direct bus (311a) by an one-way communication-DC converter (3114/3115) respectively with each aerogenerator (319), each closed-center system (3110) respectively connects annular low-voltage direct bus (311a) by a two-way DC-DC converter (3118), the output of each Unidirectional direct-current-AC converter (3111) connects AC load (313), the electrokinetic cell of the opposite side connecting electric automobile (314) of each two-way DC-DC charge-discharge machine (3112), the output of each Unidirectional direct-current-DC converter (3113) connects DC load (315).
6. a kind of inter-act DC traction power-supply system based on new forms of energy according to claim 4, it is characterized in that, described low-voltage direct micro-capacitance sensor (31) includes the radiation low-voltage direct bus (311b) be connected to by a two-way DC-DC converter (312) on high voltage dc bus (4), more than one closed-center system (3110), more than one miniature gas turbine (316), more than one solar-energy photo-voltaic cell (317), more than one fuel cell (318), more than one aerogenerator (319), more than one Unidirectional direct-current-AC converter (3111), more than one two-way DC-DC charge-discharge machine (3112) and more than one Unidirectional direct-current-DC converter (3113), wherein, each solar-energy photo-voltaic cell (317) is respectively connected radiation low-voltage direct bus (311b) by a Unidirectional direct-current-DC converter (3117/3116) respectively with each fuel cell (318), each miniature gas turbine (316) is respectively connected radiation low-voltage direct bus (311b) by an one-way communication-DC converter (3114/3115) respectively with each aerogenerator (319), each closed-center system (3110) respectively connects radiation low-voltage direct bus (311b) by a two-way DC-DC converter (3118), the output of each Unidirectional direct-current-AC converter (3111) connects AC load (313), the electrokinetic cell of the opposite side connecting electric automobile (314) of each two-way DC-DC charge-discharge machine (3112), the output of each Unidirectional direct-current-DC converter (3113) connects DC load (315).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310322814.2A CN103407383B (en) | 2013-07-29 | 2013-07-29 | Bidirectional interactive type DC (direct-current) traction power supply system base on new energy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310322814.2A CN103407383B (en) | 2013-07-29 | 2013-07-29 | Bidirectional interactive type DC (direct-current) traction power supply system base on new energy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103407383A CN103407383A (en) | 2013-11-27 |
| CN103407383B true CN103407383B (en) | 2015-06-17 |
Family
ID=49600447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310322814.2A Expired - Fee Related CN103407383B (en) | 2013-07-29 | 2013-07-29 | Bidirectional interactive type DC (direct-current) traction power supply system base on new energy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103407383B (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104078978B (en) * | 2014-07-02 | 2016-01-20 | 江苏大学 | A kind of electric automobile networking primary frequency modulation control method of smart grid-oriented |
| CN104092247A (en) * | 2014-07-04 | 2014-10-08 | 镇江船舶电器有限责任公司 | Wind power conversion device suitable for off-grid wind driven generator |
| CN106611963A (en) * | 2016-07-14 | 2017-05-03 | 中国能源建设集团甘肃省电力设计院有限公司 | Power supply system and power supply method for railways in desert areas based on wind-photovoltaic complementary power generation |
| CN108011385A (en) * | 2016-10-31 | 2018-05-08 | 西安特锐德智能充电科技有限公司 | A kind of light stores up charge and discharge system |
| CN106828201A (en) * | 2017-01-19 | 2017-06-13 | 浙江大学 | A kind of electric railway system of use HVDC contact net |
| CN107248700B (en) * | 2017-08-14 | 2023-09-19 | 青岛特来电新能源科技有限公司 | Box-type substation and micro-grid system |
| CN107516906A (en) * | 2017-08-31 | 2017-12-26 | 青岛特来电新能源有限公司 | A kind of micro-grid system and micro-capacitance sensor method of supplying power to |
| CN109606208B (en) * | 2019-01-11 | 2023-11-03 | 西南交通大学 | Off-grid railway traction power supply system and regulation and control method |
| CN110504692B (en) * | 2019-08-27 | 2022-10-21 | 西南交通大学 | Unified power flow control system and method for photovoltaic energy storage traction power supply of urban rail transit |
| CN110504671B (en) * | 2019-09-06 | 2020-11-24 | 集美大学 | Wind-solar energy storage modular energy management method for floating offshore anemometry mobile platform |
| CN111469870A (en) * | 2020-04-09 | 2020-07-31 | 倪平涛 | Novel internal multi-locomotive composed of aeroderivative gas turbine locomotive and electric locomotive |
| CN112564081B (en) * | 2020-12-08 | 2023-05-02 | 深圳供电局有限公司 | DC comprehensive micro-grid system and control method |
| CN112350377B (en) * | 2021-01-11 | 2021-04-13 | 西南交通大学 | In-phase traction power supply power generation system and control method |
| CN114906015B (en) * | 2022-04-21 | 2023-04-07 | 西南交通大学 | Alternating current-direct current traction power supply structure and control method for electrified railway |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201309432Y (en) * | 2008-07-25 | 2009-09-16 | 中国北车股份有限公司大连电力牵引研发中心 | Single/three-phase power converter matched with electric railway contact net |
| CN201350850Y (en) * | 2009-02-23 | 2009-11-25 | 吴加林 | Non phase-split traction power supply for railway locomotive |
| CN101508253B (en) * | 2009-03-26 | 2011-01-26 | 中铁上海设计院集团有限公司 | Novel power supplying system using electric railway direct feeding system of outdoor modularized electric device |
| JP2012180078A (en) * | 2011-03-03 | 2012-09-20 | Railway Technical Research Institute | Control system and control method of regenerative electric power absorbing device |
| CN102328601A (en) * | 2011-09-13 | 2012-01-25 | 北京千驷驭电气有限公司 | Energy-feedback tractive power supply system with high power factor and high cost performance |
| CN203039366U (en) * | 2012-12-03 | 2013-07-03 | 西南交通大学 | Alternating-current electrified railway continuous cophase power supply device |
| CN203358381U (en) * | 2013-07-29 | 2013-12-25 | 华北电力大学（保定） | Two-way interactive direct-current traction power supply system |
-
2013
- 2013-07-29 CN CN201310322814.2A patent/CN103407383B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN103407383A (en) | 2013-11-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103434421B (en) | A kind of mixing inter-act DC traction power-supply system based on new forms of energy | |
| CN103407383B (en) | Bidirectional interactive type DC (direct-current) traction power supply system base on new energy | |
| CN103448573B (en) | A kind of inter-act electrified railway HVDC tractive power supply system | |
| CN203358382U (en) | Bidirectional-interaction electrified railway high-voltage direct-current traction power supply system based on new energy | |
| CN103419680B (en) | A kind of DC traction power-supply system based on distributed power source | |
| CN109606208B (en) | Off-grid railway traction power supply system and regulation and control method | |
| CN205429725U (en) | Many generating lines residential block power supply system based on little electric wire netting of direct current | |
| CN109572491B (en) | Electrified railway traction network power supply structure and control method thereof | |
| CN103434420B (en) | Based on the Brake energy recovery formula DC traction power-supply system of charging electric vehicle | |
| CN204243874U (en) | A kind of data center high-voltage direct current (DC) power system | |
| CN111016742B (en) | Electrified railway traction power supply system and method based on hybrid energy storage | |
| CN203358381U (en) | Two-way interactive direct-current traction power supply system | |
| CN212921195U (en) | Power supply system of new energy mobile energy storage box | |
| CN203358379U (en) | Braking energy recycling type direct-current tractive power supply system comprising distributed power | |
| CN104333036A (en) | Multi-source coordination control system | |
| CN203592908U (en) | Direct current-alternating current traction power supply system | |
| CN203358380U (en) | Mixed two-way interactive direct-current traction power system | |
| CN202425126U (en) | Grid-connected generation solar and wind hybrid complementary street lamp system controller | |
| CN203352263U (en) | Braking energy recovery-type direct current traction power supply system | |
| CN209823438U (en) | Complex line full parallel AT traction power supply system based on comprehensive energy | |
| CN209505511U (en) | A kind of electric railway traction net powered construction | |
| CN209454601U (en) | A kind of off-network railway traction power supply system | |
| CN204230929U (en) | A kind of multi-source coordinated control system | |
| CN206850508U (en) | A kind of wind and solar hybrid generating system | |
| CN207782430U (en) | A kind of energy source router applied to island microgrid |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150617 Termination date: 20190729 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |