CN205105119U - City rail power supply system twin coil inserts wherein pressure energy system of presenting - Google Patents
City rail power supply system twin coil inserts wherein pressure energy system of presenting Download PDFInfo
- Publication number
- CN205105119U CN205105119U CN201520843545.9U CN201520843545U CN205105119U CN 205105119 U CN205105119 U CN 205105119U CN 201520843545 U CN201520843545 U CN 201520843545U CN 205105119 U CN205105119 U CN 205105119U
- Authority
- CN
- China
- Prior art keywords
- twin coil
- access type
- bus
- transformer
- coil access
- 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.)
- Active
Links
Classifications
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
Abstract
The utility model discloses a city rail power supply system twin coil inserts wherein pressure energy system of presenting, including rectifier transformer, the twin coil inserts the formula can present device and rectifier unit, rectifier transformer's line side winding and middling pressure AC electric network link to each other, valve side duplex winding respectively through the twin coil insert the formula can present device and rectifier unit and direct current pull net continuous, the twin coil inserts the formula and can present the device and doublely can present the branch road including parallelly connected, each beijing south maxpower technology co. Ltd presents the branch road and includes tandem arrangement's interchange side low -voltage circuit breaker in proper order, isolation transformer, dc -to -ac converter and direct current side joint tentaculum, isolation transformer is passed through to the interchange side of dc -to -ac converter, it links to each other to exchange side low -voltage circuit breaker and rectifier transformer, the direct current side of dc -to -ac converter is pull the net through direct current side joint tentaculum and direct current and is linked to each other. The utility model discloses can realize energy -conservation and the steady voltage of direct current busbar voltage, have the flexibility height, small, with existing system combination degree is high, power factor is high and pour into the advantage that the harmonic hangs down, the commonality is good that exchanges the side into.
Description
Technical field
The utility model relates to power supply of city railway system, is specifically related to pressure energy feedback system in a kind of power supply of city railway system twin coil access type.
Background technology
At present in the rail tractive power supply system of city, mainly there are two kinds of solutions in the regenerated energy aspect produced during process train braking, a kind of is the scheme of low pressure feedback+resistance consumption, by braking energy feedback in low-voltage distribution AC400V electrical network, excess energy is then consumed by brake resistance, because low voltage distribution transformer capacity is less, when braking energy is larger, most energy is consumed by brake resistance, and regenerated energy recycling rate of waterused is lower; Another kind is middle pressure energy feedback scheme (separate branches type), that braking energy is fed back to pressure AC network in electric substation by feedback current transformer, this solution feedback power is larger, extraordinary electrical network is possessed compatible in harmonic wave, power factor, anti-isolated island etc., in the rail concentration supply power system of city, application advantage is obvious, but in decentralized power-supply system, in the electric substation of the energy back having a part feedback to power administration, can not be reused by metro operation side completely, two kinds of modes respectively have to be suitable for limits to; What wherein have a kind of shared rectifier transformer in middle pressure energy feedback scheme can present device, all single spur track is only had at present in application & design, connect with the substance of rectifier transformer, rectifier transformer low pressure two heating in winding can be caused uneven, unknown on the impact of rectifier transformer.The capacity of feedback is simultaneously subject to rectifier transformer and holds quantitative limitation, and unnecessary braking power needs to absorb by adjacent institute feedback device, circuit exists certain pressure drop, affects energy-saving effect.
Applying at present comparatively ripe is at home and abroad regenerative braking energy feedback device, and the energy produced by train braking is converted to alternating current by inversion and is fed back to AC network again.Regenerative braking energy feedback device is divided into low-pressure type energy back feed device by the difference of feedback point voltage, middle pressure shares rectification modification energy back feed device, middle pressure separate branches type energy back feed device.Wherein low-pressure type energy back feed device can be implemented in feeding braking energy back in certain power bracket, but absorbs finite energy, and generally need install resistance consumption device additional, efficiency is lower, middle pressure shares rectification modification energy back feed device can realize total power scope inside brake energy feedback, but because not adopting isolating transformer, electromagnetic isolation is there is not between feedback current and Rectification Power Factor electric current, pouring in of feedback current can cause traction transformer low pressure winding side voltage to raise, the voltage at peak point place may higher than the direct voltage of DC side, cause diode rectifier conducting near peak point, formation can be presented between device and Rectification Power Factor exists circulation, efficiency is lower, protection poor compatibility, adopting the device of presenting of single isolating transformer of isolating transformer, then to there is power factor lower, one-sided the connecing of rectifier transformer can present device, the heating of rectifier transformer double winding is unbalanced, affect the life-span, middle pressure separate branches type energy back feed device can realize total power scope inside brake energy feedback, and adopt multiplex topological structure, equipment investment is higher, takes up an area larger.
Adopt the shared rectification of two isolating transformer to become energy back feed device and can realize total power scope inside brake energy absorption, improve device energy conservation rate, make rectifier transformer valve side double winding operational heat balanced simultaneously, can not have a negative impact to rectifier transformer; Two-way can present the mode that branch road adds isolating transformer in addition, will greatly reduce the current harmonic content injecting AC network, and the basic circulation eliminated between diode rectifier affects.
For presenting device access rectifier transformer scheme, mainly contain with hereafter several in prior art: (1) number of patent application is patent document discloses one and presenting formula traction power set of 201210065612.X, comprise transformer, diode rectification unit and PWM Rectification Power Factor, this can be presented formula traction power set and also comprise bidirectional DC-DC converter, this technical scheme adopts bidirectional DC-DC converter to be connected with the DC side of diode rectification unit and PWM Rectification Power Factor, realize PWM Rectification Power Factor and the shared transformer of diode rectification unit, this technical scheme adds bidirectional DC-DC converter between PWM Rectification Power Factor and diode rectification unit, circuit system is complicated, control system is complicated, cost of investment is high, control comparatively to be difficult to realize.(2) number of patent application is the multi-target integrated control energy-saving apparatus that patent document discloses a kind of electric power supply system for subway of 200810156541.8, the AC/DC unsteady flow module of controlled High Power Factor rectification is adopted to replace traditional rectification circuit, at DC bus place, one or more DC/DC unsteady flow module in parallel is housed simultaneously, make the electric energy produced during locomotive brake part can feed back to electrical network by AC/DC module, part is by being stored into separate capacitors group after the boosting of DC/DC module, this device can make full use of braking energy, and by partially absorbing energy, part feedback energy overcomes the instantaneous feedback grid of all energy to the impact of electrical network.This technical scheme adopts the DC/DC unsteady flow module adding at DC traction bus place and increase one or more parallel connection, make the electric energy produced during locomotive brake part can feed back to electrical network by AC/DC module, part is by being stored into separate capacitors group after the boosting of DC/DC module, overcome the instantaneous feedback grid of all energy to impact electrical network, the impact to electrical network is reduced by the mode increasing hardware, add equipment cost and floor space, and feedback and absorption energy partial logic complexity, realize difficulty comparatively large, the reliability of equipment work can be affected.
Utility model content
The technical problems to be solved in the utility model: for the problems referred to above of prior art, there is provided a kind of can when train electric braking by braking energy by inverter inversion to rectifier transformer secondary limit, by rectification unit boosting feed back in press AC network to reach energy-conservation object, can in power bracket stable DC busbar voltage, flexibility is high, volume is little, with pressure energy feedback system in the power supply of city railway system twin coil access type that harmonic wave is low, versatility is good that existing system conjugation is high, power factor is high and be injected into AC.
In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is:
Pressure energy feedback system in a kind of power supply of city railway system twin coil access type, comprise rectifier transformer, twin coil access type can present device and rectification unit, the source side winding of described rectifier transformer is connected with middle pressure AC network, valve side double winding can be presented device respectively by twin coil access type and be connected with the DC bus of DC Traction Network with rectification unit, described twin coil access type can be presented device and comprise the two Beijing South Maxpower Technology Co. Ltd's feedback branch roads be arranged in parallel, each Beijing South Maxpower Technology Co. Ltd feedback branch road comprises the AC low-voltage circuit breaker QF1 of arranged in series successively, isolating transformer, inverter and DC side contactor KM1, the AC of described inverter passes through isolating transformer successively, AC low-voltage circuit breaker QF1 is connected with the valve side winding of rectifier transformer one, the DC side of described inverter is connected with the DC bus of DC Traction Network by DC side contactor KM1.
Preferably, the DC side that described twin coil access type can present device is provided with the first DC switch QFz1 and the first negative switch QC1, the DC side cathode output end of the inverter of described two Beijing South Maxpower Technology Co. Ltd's feedback branch roads is connected with the positive pole of the DC bus of DC Traction Network by the first DC switch QFz1 jointly, and the DC side cathode output end of the inverter of described two Beijing South Maxpower Technology Co. Ltd's feedback branch roads is connected with the negative pole of the DC bus of DC Traction Network by the first negative switch QC1 jointly.
Preferably, the DC side of described inverter cathode output end or be serially connected with direct current reactor L between cathode output end and the DC bus of DC Traction Network.
Preferably, described rectification unit comprises two pulse rectifiers that AC is respectively connected with a valve side winding of rectifier transformer, and the DC side of described pulse rectifier is connected with the DC bus of DC Traction Network.
Preferably, the DC side of described rectification unit is provided with the second DC switch QFz2 and the second negative switch QC2, the DC side cathode output end of described two pulse rectifiers is connected with the positive pole of the DC bus of DC Traction Network by the second DC switch QFz2 jointly, and the DC side cathode output end of described two pulse rectifiers is connected with the negative pole of the DC bus of DC Traction Network by the second negative switch QC2 jointly.
Preferably, the source side winding of described rectifier transformer is serially connected with high-voltage AC breaker QFg, and the source side winding of described rectifier transformer is connected with middle pressure AC network by high-voltage AC breaker QFg.
Preferably, the secondary limit winding phases of described isolating transformer and the valve side winding phases of rectifier transformer consistent.
In the utility model power supply of city railway system twin coil access type, pressure energy feedback system has following advantage:
1, the utility model comprises rectifier transformer, twin coil access type can present device and rectification unit, the source side winding of described rectifier transformer is connected with middle pressure AC network, valve side double winding can be presented device respectively by twin coil access type and be connected with the DC bus of DC Traction Network with rectification unit, described twin coil access type can be presented device and comprise the two Beijing South Maxpower Technology Co. Ltd's feedback branch roads be arranged in parallel, each Beijing South Maxpower Technology Co. Ltd feedback branch road comprises the AC low-voltage circuit breaker QF1 of arranged in series successively, isolating transformer, inverter and DC side contactor KM1, adopt two isolating transformer, the mode of dual intensity feedback branch road, what share rectifier transformer can present scheme, adopt dual intensity feedback branch road can increase the braking energy feeding back to AC, improve device energy conservation rate, make rectifier transformer valve side double winding operational heat balanced simultaneously, can not have a negative impact to rectifier transformer, and dual intensity feedback branch road adds the mode of isolating transformer, to greatly reduce the current harmonic content injecting AC network, and the basic circulation eliminated between diode rectifier affects.
2, general at present regenerative braking energy feedback system mainly adopts and braking energy is directly fed back to middle pressure AC network by high-tension transformer, and high-tension transformer volume is large, and cost is high; And adopt the energy feedback system sharing rectifier transformer scheme that isolating transformer is not generally set, can cause forming circulation between energy system and diode rectifier, reduce the utilance of device, the utility model devises the two isolating transformer of a kind of employing, make full use of the rectifier transformer time doublewound version in limit, reduce high-tension transformer, eliminate circulation between diode rectification group, increase the feedback capacity of energy feedback system, decrease floor space and the cost of H.V. step up transformer.
3, the utility model can be applicable to DC1500V, DC750V two kinds of Subway DC Tractions, is not both and changes the former limit of isolating transformer and time limit winding wire voltage, have the advantage that versatility is good.
Accompanying drawing explanation
Fig. 1 is the system configuration schematic diagram of the utility model embodiment one.
Fig. 2 is rectifier transformer and isolating transformer matching relationship schematic diagram in the utility model embodiment one.
Fig. 3 is that the system of the utility model embodiment one can present schematic flow sheet.
Fig. 4 is the schematic flow sheet of stagnant ring judgment means start and stop logic in the utility model embodiment one.
Fig. 5 is the phase shift waveform schematic diagram generated in the utility model embodiment one.
Fig. 6 is the system configuration schematic diagram of the utility model embodiment two.
Marginal data: 1, rectifier transformer; 2, twin coil access type can present device; 21, isolating transformer; 22, inverter; 3, rectification unit; 31, pulse rectifier.
Embodiment
As shown in Figure 1, in the power supply of city railway system twin coil access type of the present embodiment, pressure energy feedback system comprises rectifier transformer 1, twin coil access type can present device 2 and rectification unit 3, the source side winding of rectifier transformer 1 is connected with middle pressure AC network, valve side double winding can be presented device 2 respectively by twin coil access type and be connected with the DC bus of DC Traction Network with rectification unit 3, twin coil access type can be presented device 2 and comprise the two Beijing South Maxpower Technology Co. Ltd's feedback branch roads be arranged in parallel, each Beijing South Maxpower Technology Co. Ltd feedback branch road comprises the AC low-voltage circuit breaker QF1 of arranged in series successively, isolating transformer 21, inverter 22 and DC side contactor KM1, the AC of inverter 22 is successively by isolating transformer 21, AC low-voltage circuit breaker QF1 is connected with the valve side winding of rectifier transformer 1 one, the DC side of inverter 22 is connected with the DC bus of DC Traction Network by DC side contactor KM1.The present embodiment adopts two isolating transformer 21, the secondary limit of rectifier transformer 1 is shared with rectification unit 3, eliminate the circulation between rectification unit 3, by isolating transformer 21, feedback current and rectification unit 3 limit windings are separated, there is no the connection of electricity, only have magnetic field induction, thus eliminate the high factor of rectification unit 3 limit net voltage rises that high frequency peaks electric current causes, rectification unit 3 can not be caused open-minded under the high frequency peaks function of current, also just eliminate twin coil access type and can present loop current between device 2 and rectification unit 3.Current employing single spur track can present device for solving harmonic problem, main circuit topological structure all adopts LCL type current transformer pattern at AC, cause operationally producing certain reactive power because AC exists electric capacity C, the power fed back in medium voltage network is made to contain part idle, cause its power factor lower, simultaneously monolaterally be connected to rectifier transformer, rectifier transformer secondary winding when rectification and inversion time all monolateral operation, cause temperature rise difference between two windings more for a long time, fatigue of materials degree varies causes, and affects the life-span of rectifier transformer.And in the present embodiment, adopt the twin coil access type of two isolating transformer 21 can present device 2, branch road load can be presented due to substance to reduce, rectification unit 3 two two winding temperature rises comparatively balance and lower, local temperature rise's larger difference of rectification unit 3 can not be formed, less to the aging effects of rectifier transformer 1.
The present embodiment adopts two isolating transformer 21 to connect with the valve side double winding of rectifier transformer 1 respectively, every Beijing South Maxpower Technology Co. Ltd feedback branch road AC adopts AC low-voltage circuit breaker QF1 to connect with rectifier transformer 1 valve side winding, DC side is then by DC side contactor KM1 Parallel opertation, in every Beijing South Maxpower Technology Co. Ltd feedback branch road, there is obvious breakpoint in AC and DC side, substance can be realized and can present branch road when breaking down, can realizing excising the mode presenting branch road fast by disconnecting AC low-voltage circuit breaker QF1 and DC side contactor KM1, not affecting the normal operation of another branch road.Visible see Fig. 1, two Beijing South Maxpower Technology Co. Ltd feedback branch roads two DC side contactor KM1(KM1#1 and KM1#2) add, obvious main circuit breakpoint can be formed, can when a certain can present branch road break down, realize single spur track failure-free operation, improve reliability and the utilization rate of equipment and installations of device.
As shown in Figure 1, the DC side that twin coil access type can present device 2 is provided with the first DC switch QFz1 and the first negative switch QC1, the DC side cathode output end of the inverter 22 of two Beijing South Maxpower Technology Co. Ltd's feedback branch roads is connected with the positive pole of the DC bus of DC Traction Network by the first DC switch QFz1 jointly, and the DC side cathode output end of the inverter 22 of two Beijing South Maxpower Technology Co. Ltd's feedback branch roads is connected with the negative pole of the DC bus of DC Traction Network by the first negative switch QC1 jointly.
As shown in Figure 1, direct current reactor L is serially connected with between the cathode output end of the DC side of inverter 22 and the DC bus of DC Traction Network.Direct current reactor L is added in the DC side of inverter 22, major function is embodied in following 2 points: one is filtering, filtering DC side input harmonics, make inverter 22 less as the direct current exported during four quadrant convertor, direct voltage harmonic wave, the quality of power supply is good; Two is defencive functions; if DC Traction Network or twin coil access type can present device 2 when being short-circuited; direct current reactor L can suppress transient short-circuit current size; short circuit current climbing during effective suppression dc-side short-circuit; and extend short circuit current growth rate (namely suppressing di/dt); and then be that the time is got in the quick shutoff of the first DC switch QFz1 and the first negative switch QC1, avoid the phenomenon producing damage equipment to produce.
In the present embodiment, rectification unit 3 comprises two pulse rectifiers 31 that AC is respectively connected with a valve side winding of rectifier transformer 1, and the DC side of pulse rectifier 31 is connected with the DC bus of DC Traction Network.
In the present embodiment, the DC side of rectification unit 3 is provided with the second DC switch QFz2 and the second negative switch QC2, the DC side cathode output end of two pulse rectifiers 31 is connected with the positive pole of the DC bus of DC Traction Network by the second DC switch QFz2 jointly, and the DC side cathode output end of two pulse rectifiers 31 is connected with the negative pole of the DC bus of DC Traction Network by the second negative switch QC2 jointly.
In the present embodiment, the source side winding of rectifier transformer 1 is serially connected with high-voltage AC breaker QFg, and the source side winding of rectifier transformer 1 is connected with middle pressure AC network by high-voltage AC breaker QFg.
As shown in Figure 2, in the present embodiment the secondary limit winding phases of isolating transformer 21 and the valve side winding phases of rectifier transformer 1 consistent.In the present embodiment, rectifier transformer 1 winding connection is as adopted Dy5d0, then the winding connection of isolating transformer 21 is respectively Y5y0 and D0y0 mode, this matching relationship equivalence can realize the consistent of inverter 22 and rectifier transformer 1 former limit phase place, be conducive to the phase matched of isolating transformer 21 and rectifier transformer 1, the multiple inverter configuration being conducive to realizing presenting branch road is to form multiplex relation in inverter 22 side, be convenient in control system, realize triangular carrier phase shift technology, multiplex triangular carrier phase shift technology can realize that inverter 22 current on line side is humorous involves offseting of voltage harmonic, be conducive to reducing output harmonic wave, improve net side power factor, and can Multiple Superposition be passed through, improve the combination switch frequency of power device, thus reduce switching loss and harmonic content, and improve the equivalent frequency of system dc side output voltage, thus the high frequency ripple in minimizing direct current.
As shown in Figure 3, in the present embodiment power supply of city railway system twin coil access type, the step presenting method of pressure energy feedback system comprises:
1) under train is in running status, in power supply of city railway system twin coil access type, pressure energy feedback system is in hot holding state, and twin coil access type can present device 2 and rectification unit 3 quits work, and when train traction starts, redirect performs step 2); When train braking, redirect performs step 3);
2) therefrom press AC network to get stream injection DC Traction Network by rectifier transformer 1, rectification unit 3 and provide traction current for train traction starts, DC bus-bar voltage from floating voltage along with ER effect reduces greatly and gradually, this DC bus-bar voltage can present the starting resistor of device 2 far below twin coil access type, makes twin coil access type can present device 2 and keeps closing; When the DC bus-bar voltage of DC Traction Network is recovered normal, rectification unit 3 quits work, and returns step 1);
3) train braking energy causes the DC bus-bar voltage of DC Traction Network to rise, and when DC bus-bar voltage exceedes the floating voltage of rectification unit 3, rectification unit 3 is oppositely by making rectification unit 3 quit work; When DC Traction Network DC bus-bar voltage rise reach twin coil access type can present the enabling gate threshold value Uq of device 2 time, twin coil access type can be presented device 2 and start, device 2, rectifier transformer 1 can be presented by train braking energy feedback to middle pressure AC network, with the DC bus-bar voltage of stable DC Traction networks for Us(Us<Uq) by twin coil access type; Judge whether to reach the stop condition that twin coil access type can present device 2, when reaching twin coil access type and can presenting the stop condition of device 2, twin coil access type can be presented device 2 and quit work, and returns step 1).
The present embodiment is at hot holding state and wholely can present in control procedure, and AC low-voltage circuit breaker QF1#1 and QF1#2, DC side contactor KM1#1 and KM1#2, the first DC switch QFz1, the first negative switch QC1, the second DC switch QFz2, the second negative switch QC2, high-voltage AC breaker QFg are all in closure state.By rectifier transformer 1, rectification unit 3 therefrom press AC network get stream inject DC Traction Network provide traction current for train traction starts time, the electric current of middle pressure AC network injects DC Traction Network through high-voltage AC breaker QFg, rectifier transformer 1, second DC switch QFz2 and the second negative switch QC2 successively, and rectifier transformer 1 is rectified unit 3 and monopolizes.By twin coil access type can present device 2, rectifier transformer 1 by train braking energy feedback to middle pressure AC network time, train braking energy feeds back to middle pressure AC network through the first DC switch QFz1 and the first negative switch QC1, DC side contactor KM1#1 and KM1#2, inverter 22, isolating transformer 21, AC low-voltage circuit breaker QF1#1 and QF1#2, rectifier transformer 1, high-voltage AC breaker QFg, and rectifier transformer 1 can be presented device 2 by twin coil access type and monopolize.Rectifier transformer 1, in whole process, can present device 2 and rectification unit 3 time-sharing multiplex by twin coil access type respectively.
As shown in Figure 4, the detailed step of the present embodiment step 3) comprises:
3.1) Initialize installation starts threshold voltage U q, curent change slope preset value and starts threshold voltage U q and stop Ut between threshold voltage to arrange stagnant ring value; In the present embodiment, consider that the DC bus-bar voltage fluctuation peak-to-peak value of DC Traction Network is generally less than 30V, therefore arranging stagnant ring value is 15V;
3.2) train braking energy causes the DC bus-bar voltage of DC Traction Network to rise, and when DC bus-bar voltage exceedes the floating voltage of rectification unit 3, described rectification unit 3 is oppositely by making rectification unit 3 quit work;
3.3) when DC bus-bar voltage exceedes Ut between startup threshold voltage U q, stopping threshold voltage, twin coil access type can be presented device 2 and start, device 2, rectifier transformer 1 can be presented by train braking energy feedback to middle pressure AC network by twin coil access type, DC bus-bar voltage is stabilized in line voltage voltage stabilizing value Us, this line voltage voltage stabilizing value Us is less than and starts threshold voltage U q, arranges and stops threshold voltage Ut to deduct the less a certain magnitude of voltage of the difference of stagnant ring value than line voltage voltage stabilizing value Us;
3.4) judge whether the DC bus-bar voltage of DC Traction Network falls after rise and reach the stopping threshold voltage Ut that twin coil access type can present device 2, when reaching twin coil access type and can presenting the stopping threshold voltage Ut of device 2, redirect performs step 3.5);
3.5) judge whether the curent change slope of DC Traction Network is less than curent change slope preset value, if be less than curent change slope preset value, then be judged to reach the stop condition that twin coil access type can present device 2, twin coil access type can be presented device 2 and quit work, and returns step 1); Otherwise redirect performs step 3.4).
The DC bus-bar voltage of DC Traction Network is generally 24 pulse wave rectifier voltages, there is certain fluctuation range, and when being open to traffic of DC bus-bar voltage of DC Traction Network, the braking of proximate vehicle also can cause the concussion of direct current net pressure, if this concussion point is just in twin coil access type when can present near the startup threshold voltage U q of device 2, twin coil access type can be caused to present device 2 start frequently, stop, increasing the misoperation that twin coil access type can present device 2.The present embodiment is by above-mentioned steps 3.1 ~ 3.6), define twin coil access type and can present Hysteresis control technology in device 2 on off control and current changing rate judgment technology, make when on DC Traction Network circuit without vehicle time, DC bus-bar voltage can decline to a great extent, when lower than stopping threshold value Ut, device judges curent change slope simultaneously, judge current slope, minimizing trend or increase tendency, can distinguish more accurately in direct current network is there is braking energy and direct voltage normal fluctuation, the misoperation of avoiding device, twin coil access type can be avoided to present device 2 frequent starting, Loss reducing and error starting.
Device 2 can be presented by twin coil access type in the present embodiment step 3), rectifier transformer 1 by train braking energy feedback to middle pressure AC network time, can present device 2 to twin coil access type adopts triangular carrier phase shift technology to generate the SVPWM modulation waveform presenting device 2 to twin coil access type, detailed step comprises: phase place phase shift triangular carrier being carried out to 360o/2 obtains 2 tunnel phase shift triangular carrier waveforms as shown in Figure 5, tri_test1 waveform is the phase shift triangular carrier waveform of the inverter 22 of Beijing South Maxpower Technology Co. Ltd's feedback branch road, tri_test2 waveform is the phase shift triangular carrier waveform of the inverter 22 of another Beijing South Maxpower Technology Co. Ltd feedback branch road, harmonic current phase 180o between tri_test1 waveform and tri_test2 waveform, 2 tunnel phase shift triangular carrier waveforms (tri_test1 waveform and tri_test2 waveform) are being generated respectively the SVPWM modulation waveform for controlling inverter 22 in two Beijing South Maxpower Technology Co. Ltd's feedback branch roads with sinusoidal modulation wave, one road SVPWM modulation waveform is for controlling an inverter 22, make the harmonic current phase 180o of two Beijing South Maxpower Technology Co. Ltd's feedback branch roads, realize that current transformer current on line side is humorous involves offseting of voltage harmonic, can reach and do not improving single group inverter switching frequency and obtaining high equivalent switching frequency under keeping the prerequisite of main circuit topological structure, thus reduce the harmonic content of system output waveform.
embodiment two:
As shown in Figure 6, in the power supply of city railway system twin coil access type of the present embodiment, pressure energy feedback system is substantially identical with pressure energy feedback system in the power supply of city railway system twin coil access type of the present embodiment of embodiment one (shown in Fig. 1), its main distinction point is: in embodiment one, between the cathode output end that direct current reactor L is serially connected in the DC side of inverter 22 and the DC bus of DC Traction Network, between the negative pole being specifically serially connected in the DC bus of the first negative switch QC1 and DC Traction Network, two can present branch road shares a direct current reactor L, larger by the electric current of direct current reactor L, cause direct current reactor L volume larger, generate heat larger.And in the present embodiment, between the cathode output end that direct current reactor L is serially connected in the DC side of inverter 22 and the DC bus of DC Traction Network, specifically be serially connected in DC side contactor KM1 and the first DC switch QFz1, and the DC side positive pole of each inverter 21 is serially connected with a direct current reactor L, compare embodiment one and decrease half by the electric current of direct current reactor L, volume and heating also reduce more, but cost can than high in embodiment.In addition; direct current reactor L other serial connection positions between the DC side and the DC bus of DC Traction Network of inverter 22 can also be adjusted as required; such as between the first DC switch QFz1 and the DC bus positive pole of DC Traction Network; public line between the cathode output end of the DC side of inverter 22 and the first DC switch QFz1 is first-class; it equally also can realize filtering and defencive function, therefore does not repeat them here.
The above is only preferred implementation of the present utility model, protection range of the present utility model be not only confined to above-described embodiment, and all technical schemes belonged under the utility model thinking all belong to protection range of the present utility model.It should be pointed out that for those skilled in the art, do not departing from the some improvements and modifications under the utility model principle prerequisite, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (7)
1. pressure energy feedback system in a power supply of city railway system twin coil access type, it is characterized in that: comprise rectifier transformer (1), twin coil access type can present device (2) and rectification unit (3), the source side winding of described rectifier transformer (1) is connected with middle pressure AC network, valve side double winding can be presented device (2) respectively by twin coil access type and be connected with the DC bus of DC Traction Network with rectification unit (3), described twin coil access type can be presented device (2) and comprise the two Beijing South Maxpower Technology Co. Ltd's feedback branch roads be arranged in parallel, each Beijing South Maxpower Technology Co. Ltd feedback branch road comprises the AC low-voltage circuit breaker QF1 of arranged in series successively, isolating transformer (21), inverter (22) and DC side contactor KM1, the AC of described inverter (22) is successively by isolating transformer (21), AC low-voltage circuit breaker QF1 is connected with the valve side winding of rectifier transformer (1), the DC side of described inverter (22) is connected with the DC bus of DC Traction Network by DC side contactor KM1.
2. pressure energy feedback system in power supply of city railway system twin coil access type according to claim 1, it is characterized in that: the DC side that described twin coil access type can present device (2) is provided with the first DC switch QFz1 and the first negative switch QC1, the DC side cathode output end of the inverter (22) of described two Beijing South Maxpower Technology Co. Ltd's feedback branch roads is connected with the positive pole of the DC bus of DC Traction Network by the first DC switch QFz1 jointly, the DC side cathode output end of the inverter (22) of described two Beijing South Maxpower Technology Co. Ltd's feedback branch roads is connected with the negative pole of the DC bus of DC Traction Network by the first negative switch QC1 jointly.
3. pressure energy feedback system in power supply of city railway system twin coil access type according to claim 2, is characterized in that: the cathode output end of the DC side of described inverter (22) or be serially connected with direct current reactor L between cathode output end and the DC bus of DC Traction Network.
4. pressure energy feedback system in power supply of city railway system twin coil access type according to claim 3, it is characterized in that: described rectification unit (3) comprises two pulse rectifiers (31) that AC is respectively connected with a valve side winding of rectifier transformer (1), and the DC side of described pulse rectifier (31) is connected with the DC bus of DC Traction Network.
5. pressure energy feedback system in power supply of city railway system twin coil access type according to claim 4, it is characterized in that: the DC side of described rectification unit (3) is provided with the second DC switch QFz2 and the second negative switch QC2, the DC side cathode output end of described two pulse rectifiers (31) is connected with the positive pole of the DC bus of DC Traction Network by the second DC switch QFz2 jointly, and the DC side cathode output end of described two pulse rectifiers (31) is connected with the negative pole of the DC bus of DC Traction Network by the second negative switch QC2 jointly.
6. pressure energy feedback system in power supply of city railway system twin coil access type according to claim 5, it is characterized in that: the source side winding of described rectifier transformer (1) is serially connected with high-voltage AC breaker QFg, the source side winding of described rectifier transformer (1) is connected with middle pressure AC network by high-voltage AC breaker QFg.
7., according to pressure energy feedback system in described power supply of city railway system twin coil access type arbitrary in claim 1 ~ 6, it is characterized in that: the secondary limit winding phases of described isolating transformer (21) is consistent with the valve side winding phases of rectifier transformer (1).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510712538.XA CN105226969B (en) | 2015-10-28 | 2015-10-28 | Pressure energy feedback system and its method can be presented in power supply of city railway system twin coil access type |
| CN201520843545.9U CN205105119U (en) | 2015-10-28 | 2015-10-28 | City rail power supply system twin coil inserts wherein pressure energy system of presenting |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510712538.XA CN105226969B (en) | 2015-10-28 | 2015-10-28 | Pressure energy feedback system and its method can be presented in power supply of city railway system twin coil access type |
| CN201520843545.9U CN205105119U (en) | 2015-10-28 | 2015-10-28 | City rail power supply system twin coil inserts wherein pressure energy system of presenting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205105119U true CN205105119U (en) | 2016-03-23 |
Family
ID=72474053
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510712538.XA Active CN105226969B (en) | 2015-10-28 | 2015-10-28 | Pressure energy feedback system and its method can be presented in power supply of city railway system twin coil access type |
| CN201520843545.9U Active CN205105119U (en) | 2015-10-28 | 2015-10-28 | City rail power supply system twin coil inserts wherein pressure energy system of presenting |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510712538.XA Active CN105226969B (en) | 2015-10-28 | 2015-10-28 | Pressure energy feedback system and its method can be presented in power supply of city railway system twin coil access type |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN105226969B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106218447A (en) * | 2016-08-16 | 2016-12-14 | 深圳市禾望电气股份有限公司 | A kind of control method that can present type traction power set and system |
| CN106877314A (en) * | 2017-03-10 | 2017-06-20 | 山东大学 | A kind of many electric power electric transformer tractive power supply systems of low-pressure side common DC bus |
| CN107565826A (en) * | 2016-06-30 | 2018-01-09 | 株洲中车时代电气股份有限公司 | Rectifier transformer medium-pressure type regenerative braking energy feedback device and its control method altogether |
| CN107658875A (en) * | 2017-10-30 | 2018-02-02 | 镇江大全赛雪龙牵引电气有限公司 | Urban track traffic thyristor-type traction rectifier and feedback converter system |
| CN108808720A (en) * | 2017-04-26 | 2018-11-13 | 中车株洲电力机车研究所有限公司 | A kind of tractive power supply system |
| CN108899893A (en) * | 2018-06-08 | 2018-11-27 | 厦门科华恒盛股份有限公司 | The protection system and the urban transportation of energy feedback type traction power supply device |
| CN109698496A (en) * | 2017-10-20 | 2019-04-30 | 株洲中车时代电气股份有限公司 | A kind of rail traffic tractive power supply system and control method |
| CN110504850A (en) * | 2018-05-17 | 2019-11-26 | 株洲中车时代电气股份有限公司 | A kind of fairing and its circulation inhibition method |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105720833B (en) * | 2016-03-24 | 2018-07-31 | 西安爱科赛博电气股份有限公司 | Rail traction takes electric through track power supply |
| US10160336B2 (en) * | 2016-05-05 | 2018-12-25 | GM Global Technology Operations LLC | Multiphase converter auxiliary power reduction |
| CN106300414B (en) * | 2016-08-29 | 2018-11-09 | 南京亚派科技股份有限公司 | A kind of modularization subway energy back feed device based on series and parallel structure |
| CN106159960B (en) * | 2016-08-29 | 2019-05-17 | 南京亚派科技股份有限公司 | Based on the modular subway energy back feed device closed loop control method of series and parallel structure |
| CN106786782B (en) * | 2017-03-10 | 2019-10-22 | 科华恒盛股份有限公司 | A kind of energy feedback system and its starting method |
| CN109753666A (en) * | 2017-11-01 | 2019-05-14 | 中车株洲电力机车研究所有限公司 | Method, apparatus, equipment and the storage medium of ground energy storage device Equivalent Modeling |
| CN109753668A (en) * | 2017-11-01 | 2019-05-14 | 中车株洲电力机车研究所有限公司 | Method, apparatus, equipment and the storage medium of ground energy storage device Equivalent Modeling |
| CN108215806B (en) * | 2018-01-02 | 2020-08-11 | 宁波市江北九方和荣电气有限公司 | Regenerative braking energy feedback system |
| CN109217376B (en) * | 2018-10-12 | 2020-07-07 | 西安许继电力电子技术有限公司 | Synchronous switching-on control method of subway brake feedback converter |
| CN111313431B (en) * | 2018-12-11 | 2023-10-20 | 西安许继电力电子技术有限公司 | Subway traction power supply system and reactive compensation control method and device thereof |
| CN111490546A (en) * | 2019-01-25 | 2020-08-04 | 西安许继电力电子技术有限公司 | Rail transit regenerated energy feedback system and rail transit power distribution network system |
| CN111645526B (en) * | 2019-05-21 | 2023-06-27 | 南京南瑞继保电气有限公司 | Locomotive energy feedback device and electric energy feedback method, device and system thereof |
| CN112356741B (en) * | 2020-11-20 | 2022-06-07 | 西安许继电力电子技术有限公司 | Feedback control method and system based on PWM energy feedback converter |
| AU2022222479A1 (en) | 2021-02-19 | 2023-08-03 | Sécheron Sa | Dc power supply device and railway substation incorporating it |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110045839A1 (en) * | 2009-08-21 | 2011-02-24 | Globalsat Technology Corporation | GPS remote transmission method |
| CN104097538B (en) * | 2013-04-15 | 2016-08-24 | 同济大学 | A kind of urban track traffic traction contact net industry and mining city method |
| CN104340085B (en) * | 2014-10-28 | 2016-08-24 | 株洲时代装备技术有限责任公司 | A kind of urban rail medium-pressure type with circulation elimination function can present method of supplying power to and device |
-
2015
- 2015-10-28 CN CN201510712538.XA patent/CN105226969B/en active Active
- 2015-10-28 CN CN201520843545.9U patent/CN205105119U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107565826A (en) * | 2016-06-30 | 2018-01-09 | 株洲中车时代电气股份有限公司 | Rectifier transformer medium-pressure type regenerative braking energy feedback device and its control method altogether |
| CN106218447A (en) * | 2016-08-16 | 2016-12-14 | 深圳市禾望电气股份有限公司 | A kind of control method that can present type traction power set and system |
| CN106877314A (en) * | 2017-03-10 | 2017-06-20 | 山东大学 | A kind of many electric power electric transformer tractive power supply systems of low-pressure side common DC bus |
| CN106877314B (en) * | 2017-03-10 | 2023-11-21 | 山东大学 | Multi-power electronic transformer traction power supply system with low-voltage side sharing direct current bus |
| CN108808720A (en) * | 2017-04-26 | 2018-11-13 | 中车株洲电力机车研究所有限公司 | A kind of tractive power supply system |
| CN109698496A (en) * | 2017-10-20 | 2019-04-30 | 株洲中车时代电气股份有限公司 | A kind of rail traffic tractive power supply system and control method |
| CN107658875A (en) * | 2017-10-30 | 2018-02-02 | 镇江大全赛雪龙牵引电气有限公司 | Urban track traffic thyristor-type traction rectifier and feedback converter system |
| CN110504850A (en) * | 2018-05-17 | 2019-11-26 | 株洲中车时代电气股份有限公司 | A kind of fairing and its circulation inhibition method |
| CN108899893A (en) * | 2018-06-08 | 2018-11-27 | 厦门科华恒盛股份有限公司 | The protection system and the urban transportation of energy feedback type traction power supply device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105226969B (en) | 2018-08-10 |
| CN105226969A (en) | 2016-01-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205105119U (en) | City rail power supply system twin coil inserts wherein pressure energy system of presenting | |
| CN104333038B (en) | Power supply of city railway system mixed type regenerated energy recovery method and device | |
| CN102267405B (en) | Energy feeding type dragging power supply device and control method thereof | |
| CN109572491B (en) | Electrified railway traction network power supply structure and control method thereof | |
| CN103311950B (en) | City railway train regenerating braking energy absorbs system and method | |
| CN103552487B (en) | A kind of cophase supply device and tractive power supply system | |
| CN103895534B (en) | Double-current system traction power supply system based on modularized multi-level current converter | |
| CN105584386B (en) | A kind of module-cascade formula can present type traction power set and its control method | |
| CN202046214U (en) | Energy-fed traction power supply device | |
| CN107565826A (en) | Rectifier transformer medium-pressure type regenerative braking energy feedback device and its control method altogether | |
| CN106240405B (en) | Single phase power supply device, electric railway traction power supply system and its control method | |
| CN204967652U (en) | Subway energy feedback device | |
| CN106953332B (en) | Electrified railway in-phase power supply scheme based on uncontrollable rectifier and step doping inversion | |
| CN102611116B (en) | Single-phase electric energy quality controller for electrified railway power supply system | |
| CN103928928A (en) | High-speed railway electric energy quality and traction network voltage comprehensive compensation system | |
| CN205395811U (en) | Module is cascaded formula and can be presented type and draw power supply unit | |
| CN103560544A (en) | System for starting large-scale power load in micro grid | |
| CN100505499C (en) | A railway engine AC traction in-phase power supply device based on YN,vd wiring transformer | |
| CN109428330A (en) | Electric railway auxiliary power supply system and control method with power circulation function | |
| CN203774792U (en) | High speed railway power quality and traction network voltage integration compensation system | |
| CN204144996U (en) | A kind of multiple control lift energy feedback net arrangement with super capacitor | |
| CN209200956U (en) | A kind of high-power thyristor type traction rectifier braking inversion Bidirectional variable-flow system | |
| CN203039366U (en) | Alternating-current electrified railway continuous cophase power supply device | |
| CN206049416U (en) | Single phase power supply device, electric railway traction power supply system | |
| CN105429472A (en) | Star angle-shape rectifier-type high-power DC step-up converter and control method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 315000 No. 3399 Nanjing Road, Zhejiang, Yinzhou District, Ningbo Co-patentee after: ZHUZHOU CRRC TIMES EQUIPMENT TECHNOLOGY Co.,Ltd. Patentee after: Ningbo Rail Transit Group Co.,Ltd. Address before: 315000 No. 3399 Nanjing Road, Zhejiang, Yinzhou District, Ningbo Co-patentee before: ZHUZHOU TIMES EQUIPMENT TECHNOLOGY Co.,Ltd. Patentee before: Ningbo Rail Transit Group Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20171204 Address after: 315000 No. 3399 Nanjing Road, Zhejiang, Yinzhou District, Ningbo Co-patentee after: ZHUZHOU CRRC TIMES ELECTRIC Co.,Ltd. Patentee after: Ningbo Rail Transit Group Co.,Ltd. Address before: 315000 No. 3399 Nanjing Road, Zhejiang, Yinzhou District, Ningbo Co-patentee before: ZHUZHOU CRRC TIMES EQUIPMENT TECHNOLOGY Co.,Ltd. Patentee before: Ningbo Rail Transit Group Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230427 Address after: 3399 Ningchuan Road, Yinzhou District, Ningbo City, Zhejiang Province Patentee after: NINGBO SUBWAY INDUSTRY ENGINEERING Co.,Ltd. Patentee after: ZHUZHOU CRRC TIMES ELECTRIC Co.,Ltd. Address before: 315000 no.3399 Ningchuan Road, Yinzhou District, Ningbo City, Zhejiang Province Patentee before: Ningbo Rail Transit Group Co.,Ltd. Patentee before: ZHUZHOU CRRC TIMES ELECTRIC Co.,Ltd. |
|
| TR01 | Transfer of patent right |