CN108146297A - A kind of electric railway ground electricity split-phase uninterruptible power supply system - Google Patents
A kind of electric railway ground electricity split-phase uninterruptible power supply system Download PDFInfo
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- CN108146297A CN108146297A CN201711492572.6A CN201711492572A CN108146297A CN 108146297 A CN108146297 A CN 108146297A CN 201711492572 A CN201711492572 A CN 201711492572A CN 108146297 A CN108146297 A CN 108146297A
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- sensor
- phase
- power supply
- busbar
- power module
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
- B60M3/00—Feeding power to supply lines in contact with collector on vehicles; Arrangements for consuming regenerative power
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/40—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc
- H02M5/42—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters
- H02M5/44—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac
- H02M5/453—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal
- H02M5/458—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M5/4585—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only having a rectifier with controlled elements
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0067—Converter structures employing plural converter units, other than for parallel operation of the units on a single load
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- Inverter Devices (AREA)
Abstract
The present invention provides a kind of electric railway ground electricity split-phase uninterruptible power supply system, the system comprises：High voltage switch unit, for pair drawing busbar with α phases, β phases and α phases, the relevant high voltage power supply of β phase traction power supply arms are cut-off, including three high-voltage circuitbreakers QF1, QF2, QF4 and rc absorber RC, ground electricity split-phase is continuously powered converter plant BLQ, based on device for high-power power electronic, it carries out handing over straight friendship transformation of electrical energy for the traction busbar power supply to access, power for contact net electricity split-phase neutrality section N；Train directions and position detection unit, comprising train position sensor and its signal processor, train wheel shaft signal is sent to signal processor by the train position sensor, for detecting the position of the travel direction of train and arrival.System provided by the invention realizes and split-phase, the continuous reliable power supply function of no phase separation is gone in Train Dynamic operational process, suitable for existing railway transformation and each grade newly built railway.
Description
Technical field
The present invention relates to electrification railway contact net traction power supply field, more particularly, to a kind of electric railway
Face electricity split-phase uninterruptible power supply system.
Background technology
China's electric railway traction net uses split-phase segmented single phase industrial frequence Alternating Current Power Supply, all exists every 30~60km
The isolated area of the neutral electrical split-phase of about 200~900m, referred to as electric split-phase.Comfort of the contact net electricity split-phase in addition to influencing transport
Outside total run time, reduction railway transport capacity, kilovolt switching overvoltage at least up to more than 80 therefore even more may be brought,
It is possible that cause the damage of train high-tension apparatus or failure, meanwhile, driver operation fatigue is frequently excessively mutually easy to cause, therefore contact
The electric split-phase of net always is the fault zone occurred frequently of electromechanical bow net cooperation, and contact net electricity split-phase has become China railways towards height
Speed and a key restriction factors of heavy duty development.
In order to solve the problems, such as that electric railway train powered off split-phase, China once introduced two kinds of contact net electricity split-phases certainly
Phase-splitting technology was moved, a kind of is that the on-pole switch using AF companies of Switzerland as representative automatically powered off phase-splitting technology, and one kind is with day
This automatically switched phase-splitting technology for the floor switches of representative.
Wherein, on-pole switch automatically powered off phase splitting device and occurred arcing during experiment, burns bow, line tripping etc.
Phenomenon, application are unsuccessful.
The phase splitting device of crossing automatically switched based on ground machine switch has a small amount of application in China, but practical application also shows
Following several defects are gone out：1, mechanical switch switching cannot accurately control phase, and there are overvoltage and over-current shock；2, machinery
Switching time is long, and neutral section electrocutes area in the presence of longer nothing in commutation process；3, there is higher overvoltage and overcurrent
Impact needs to change the control software and protection seting value of train；4, the mechanical switch service life is low, needs regular maintenance and more
It changes, later stage operation cost is high.In recent years, ground machine switch, which automatically switched phase splitting device commutation failure, causes contact net alternate
The problem of short-circuit, also happens occasionally.
Automatically switch certain defects existing for phase-splitting technology for ground machine switch, and also there are associated mechanisms to open in recent years
Opened up the automatic switchover that is switched based on Ground Electronic split-phase technical research, the characteristics of technology be that machine is substituted using electronic switch
Tool switchs, but does not change since it switched the basic principle of split-phase, and neutral section is inevitable in commutation process or can deposit
Without electrocute area, overvoltage and over-current shock thus also can be still brought to train the problems such as.
Invention content
To overcome in the prior art, ground machine switch automatically switched in commutation process to exist in phase-splitting technology dead without point
The problems such as area brings overvoltage and over-current shock to train, provides a kind of electric railway ground electricity split-phase and continuously powers and be
System.
Electric railway ground automatic passing over of neutral section uninterruptible power supply system provided by the invention includes：High voltage switch unit is used
In busbar is drawn to α phases, β phases draw busbar, α phases and the relevant high voltage power supply of β phase traction power supply arms are cut-off；
Ground electricity split-phase is continuously powered converter plant BLQ, for being based on device for high-power power electronic, the traction to access
Busbar power supply carries out cross-straight-intersection transformation of electrical energy, powers for contact net electricity split-phase neutrality section N；
Train directions and position detection unit, comprising train position sensor and its signal processor, the train position
It puts sensor and train wheel shaft signal is sent to signal processor, for detecting the position of the travel direction of train and arrival；
Wherein, the high voltage switch unit includes：Three high-voltage circuitbreakers QF1, QF2, QF4 and rc absorber RC,
The feed-in busbar connection α phases of the circuit breaker Q F1 draw busbar, and the feed-in busbar connection β phases of the circuit breaker Q F2 draw mother
The busbar that feeds out of line, the circuit breaker Q F1 and circuit breaker Q F2 link together, and form a public even point and are connected to ground
Electric split-phase is continuously powered the high input voltage terminal of converter plant BLQ, and ground electricity split-phase is continuously powered the high pressure feedback of converter plant BLQ
Go out the feed-in busbar that terminal is connected to the circuit breaker Q F4, the busbar that feeds out of circuit breaker Q F4 is connected in contact net electricity split-phase
Property section N, the HV Terminal of the rc absorber RC are connected to the feed-in busbar of circuit breaker Q F4 or feed out on busbar, the other end
It is directly grounded.
Wherein, the high voltage switch unit further includes circuit breaker Q F3 and accessory power supply converting means FZDY, breaker
The feed-in busbar of QF3 and the busbar that feeds out of circuit breaker Q F1 and circuit breaker Q F2 link together, and circuit breaker Q F3's feeds out busbar company
It is connected to ground electricity split-phase continuously to power the high input voltage terminal of converter plant BLQ, the accessory power supply converting means FZDY connects
It is connected on the common bus fed out between the feed-in of circuit breaker Q F3 of circuit breaker Q F1 and circuit breaker Q F2.
The ground electricity split-phase continuously power converter plant BLQ use input for step-down transformer, output be boosting change
Depressor, high-low-high converter plant topology of the centre for low-voltage power electronics converter plant, is by single-phase Multiple coil rectifier transformer
The cross-straight-intersection electrical energy changer of device, single-phase Multiple coil contravariant transformer and back-to-back four quadrant convertor composition, it is described
Back-to-back four quadrant convertor includes rectification unit, direct current component and inversion converter unit, rectification unit and inversion converter unit
Respectively containing n power module, each power module is using identical H bridge translation circuits, the rectifier transformer primary side
There are one high-voltage winding AX, connection circuit breaker Q F3's feeds out busbar, and secondary side has n to be supplied to current transformer rectification unit power module
For low pressure winding a1x1, a2x2 of electricity to anxn, single-phase Multiple coil contravariant transformer primary side has n connection current transformer inversion transformation list
Low pressure winding c1x1, c2x2 of first power module is to cmxm, and there are one the feed-in of high-voltage winding CX connection circuit breaker Qs F4 is female for secondary side
Line；Wherein, n and m is the natural number more than 1.
Wherein, each power module is using two level H-bridge translation circuits, the DC side of each power module
Comprising a positive direct-current busbar and a negative dc bus, the positive direct-current busbar parallel connections of all power modules formed one it is total
Public positive direct-current busbar, the negative dc bus parallel connection of all power modules form a total public negative dc bus.
Wherein, each power module is using three level H-bridge translation circuits, the DC side of each power module
Comprising a positive direct-current busbar, a zero level dc bus and a negative dc bus, the positive direct-current of all power modules
Busbar parallel connection forms a total public positive direct-current busbar, and the zero level dc bus parallel connection of all power modules forms one always
Public zero level dc bus, the negative dc bus parallel connections of all power modules forms a total public negative dc bus.
Wherein, the power module uses two level H-bridge translation circuits, and the power module quantity of inversion converter unit
M is equal with the power module quantity n of rectifying conversion unit, and the back-to-back four quadrant convertor is electrically completely independent by n
Back-to-back four-quadrant unsteady flow subelement composition, the back-to-back four-quadrant unsteady flow subelement is by a rectified power module and one
A inverter side power module composition, in parallel, the negative dc bus of the positive direct-current busbar of both power module DC sides is in parallel
The dc bus subelement public to one.
Wherein, the power module uses three level H-bridge translation circuits, and the power module quantity of inversion converter unit
M is equal with the power module quantity n of rectifying conversion unit, and the back-to-back four quadrant convertor is electrically completely independent by n
The composition of back-to-back four-quadrant unsteady flow subelement, the back-to-back four-quadrant unsteady flow subelement is by a rectified power module and one
A inverter side power module composition, there are one positive direct-current busbar, zero dc bus and one for the DC side of each power module
A negative dc bus, by the positive direct-current busbar of these three power module DC sides is in parallel, zero dc bus is in parallel, negative dc bus
Parallel connection obtains a public dc bus subelement.
Wherein, the power module use the two level H-bridge translation circuits based on IGBT, by Support Capacitor, IGBT and
Anti-paralleled diode, current sensor and fuse output composition.
Wherein, the power module uses the three level H-bridge mapped structures based on IGBT diode-clampeds, by supporting
Capacitance, clamp diode, anti-paralleled diode, current sensor and fuse output composition.
Wherein, the power module uses the three level H-bridge translation circuits based on IGCT diode-clampeds, by absorbing
Capacitance, DC-LINK links current-limiting inductance, DC-LINK links diode, DC-LINK links resistance, clamp diode, IGCT and
Anti-paralleled diode, current sensor and fuse output composition.
Wherein, the ground electricity split-phase is continuously powered, and converter plant BLQ uses input, output is high-vol
Direct Gao-high converter topology, is become by precharge unit, MMC rectification units, intermediate dc isolated variable unit and MMC inversions
Change unit composition；The precharge unit is made of main switch QF and pre-charge resistance R；The MMC rectification units and MMC
Inversion converter unit is comprising two bridge arms in left and right, and each bridge arm is made of symmetrical upper and lower half-bridge, the upper and lower half-bridge
Reactor and n power module being connected in series there are one containing respectively；The power module is based on IGBT power devices
Semi-bridge alternation circuit is made of IGBT and anti-paralleled diode, T1, T2, discharge resistance Rd and Support Capacitor C.
Wherein, the power module further includes the thyristor for being connected in parallel on the anti-paralleled diode T2 sides and bypass is opened
It closes；The intermediate dc isolated variable unit is directly composed in series by m DC isolation conversion module DCM in DC side.
Wherein, the DC isolation conversion module DCM is by rectification side Support Capacitor Cz, DC-AC-AC-DC
Isolated variable unit, inverter side Support Capacitor Cn compositions, the wherein DC-AC-AC DC isolated variable unit is by H
Bridge type DC-AC converters, reactor Lr, transformer Tr and AC-DC converter composition.
Wherein, the script winding of the transformer Tr and time become winding and respectively connected a capacitance Cr.
Wherein, the DC-AC-AC DC isolated variable unit by k DC-DC converter in DC side
It composes in parallel.
Wherein, the train directions and position detection unit include：Sensor J1, it sensor J1 ', sensor J2, passes
Sensor J2 ', sensor J3 and sensor J3 ', wherein sensor J1 and sensor J1 ' are mounted on belonging to α phase traction power supply arms area
The rail both sides in domain, sensor J2 and sensor J2 ' mounted on the rail both sides for belonging to neutral section intermediate region, sensor J3 and
Sensor J3 ' is mounted on the rail both sides for belonging to β phase traction power supply arm regions.
Wherein, the train directions and position detection unit include：Sensor J1, it sensor J1 ', sensor J21, passes
Sensor J21 ', sensor J22, sensor J22 ', sensor J3 and sensor J3 ' totally four pairs of sensors, wherein sensor J1 and
Sensor J1 ' is mounted on the rail both sides for belonging to α phase traction power supply arm regions, and sensor J21 and sensor J21 ' are mounted on category
It is close mounted on neutral section is belonged to close to the rail both sides of JY1 joint areas, sensor J22 and sensor J22 ' in neutral section
The rail both sides of JY2 joint areas, sensor J3 and sensor J3 ' are mounted on the rail two for belonging to β phase traction power supply arm regions
Side；During train forward travel, using sensor J1, sensor J1 ', sensor J22, sensor J22 ', sensor J3 and sensing
Three pairs of sensors of device J3 ' are as detection unit；When train backward going, using sensor J1, sensor J1 ', sensor
Three pairs of J21, sensor J21 ', sensor J3 and sensor J3 ' sensors are as detection unit.
System provided by the invention, by ground automatic passing over of neutral section uninterruptible power supply system, electric split-phase neutrality section is continuously supplied
Electricity, unpowered dead zone, train can not power off the presence for by electric split-phase, being not felt by electric split-phase；It is automatically excessive by ground
Phase uninterruptible power supply system is powered to contact net electricity split-phase, and train produces during crossing split-phase without overvoltage, over-current shock, no electric arc
It is raw；Ground automatic passing over of neutral section uninterruptible power supply system employs high-power electric and electronic converter plant as core component, uses the longevity
Life length, operation maintenance cost are low.
Description of the drawings
Fig. 1 is a kind of electric railway ground electricity split-phase uninterruptible power supply system structure chart that one embodiment of the invention provides；
Fig. 2 is that a kind of simplifying for electric railway ground electricity split-phase uninterruptible power supply system that one embodiment of the invention provides is
System structure chart；
Fig. 3 is the knot of a kind of electric railway ground electricity split-phase uninterruptible power supply system that another embodiment of the present invention provides
Composition；
Fig. 4 is ground electricity in a kind of electric railway ground electricity split-phase uninterruptible power supply system that one embodiment of the invention provides
Split-phase is continuously powered the main circuit diagram of converter plant；
Fig. 5 is power mould in a kind of electric railway ground electricity split-phase uninterruptible power supply system that one embodiment of the invention provides
Block circuit topology figure；
Fig. 6 is ground in a kind of electric railway ground electricity split-phase uninterruptible power supply system that another embodiment of the present invention provides
Electric split-phase is continuously powered the main circuit diagram of converter plant；
Fig. 7 is power in a kind of electric railway ground electricity split-phase uninterruptible power supply system that another embodiment of the present invention provides
Modular circuit topological diagram；
Fig. 8 is power in a kind of electric railway ground electricity split-phase uninterruptible power supply system that further embodiment of this invention provides
Modular circuit topological diagram；
Fig. 9 is ground in a kind of electric railway ground electricity split-phase uninterruptible power supply system that further embodiment of this invention provides
Electric split-phase is continuously powered the main circuit diagram of converter plant；
In a kind of electric railway ground electricity split-phase uninterruptible power supply system that Figure 10 is provided for yet another embodiment of the invention
Face electricity split-phase is continuously powered the main circuit diagram of converter plant；
Figure 11 is ground in a kind of electric railway ground electricity split-phase uninterruptible power supply system that one embodiment of the invention provides
Electric split-phase continuously power converter plant use Gao-high topology realization method main circuit diagram；
Figure 12 is MMC electricity in a kind of electric railway ground electricity split-phase uninterruptible power supply system that one embodiment of the invention provides
Road rectification unit and MMC circuit inversion unit power module embodiment figures；
Figure 13 is MMC in a kind of electric railway ground electricity split-phase uninterruptible power supply system that further embodiment of this invention provides
Circuit rectifies unit and MMC circuit inversion unit power module embodiment figures；
Figure 14 is direct current in a kind of electric railway ground electricity split-phase uninterruptible power supply system that one embodiment of the invention provides
A kind of embodiment figure of isolated variable module；
Figure 15 is straight in a kind of electric railway ground electricity split-phase uninterruptible power supply system that another embodiment of the present invention provides
Flow a kind of embodiment figure of isolated variable module；
Figure 16 is straight in a kind of electric railway ground electricity split-phase uninterruptible power supply system that further embodiment of this invention provides
Flow a kind of embodiment figure of isolated variable module.
Each reference numeral is：The single-phase Multiple coil rectifier transformer T1 in 1-α phases side, 2-rectifying conversion unit, 3-direct current list
Member, 4-inversion converter unit, 5-β phases side single-phase Multiple coil contravariant transformer T2, PM-power module, 11-precharge are single
Member, 12-MMC rectification units, 13-DC isolation converter unit, 14-MMC inversion converter units, 16-power module, 17-
DC isolation conversion module DCM, 61-Support Capacitor, 62-IGBT and anti-paralleled diode, 63-current sensor, 64-defeated
Go out fuse, 71-Support Capacitor, 72-clamp diode, 73-IGBT and anti-paralleled diode, 74-current sensor,
75-fuse output, 81-Absorption Capacitance, 82-DC-LINK link current-limiting inductances, 83-DC-LINK link diodes,
84-DC-LINK link resistance, 85-clamp diode, 86-IGCT and anti-paralleled diode, 87-current sensor, 88-
Fuse output, 161-IGBT and anti-paralleled diode T1,161-IGBT and anti-paralleled diode T2,162-discharge resistance
Rd, 163-Support Capacitor C, 164-thyristor, 165-by-pass switch, 171-Support Capacitor Cz, 172-DC-AC-friendship
Stream-DC isolation converter unit, 173-inverter side Support Capacitor Cn.
Specific embodiment
With reference to the accompanying drawings and examples, the specific embodiment of the present invention is described in further detail.Implement below
Example is used to illustrate the present invention, but be not limited to the scope of the present invention.
With reference to figure 1 and Fig. 2, a kind of electric railway ground electricity split-phase uninterruptible power supply system packet provided in an embodiment of the present invention
It includes：High voltage switch unit, for drawing busbar to α phases, β phases draw busbar, α phases and the relevant high-voltage electricity of β phase traction power supply arms
It is cut-off in source；
Ground electricity split-phase is continuously powered converter plant BLQ, for being based on device for high-power power electronic, the traction to access
Busbar power supply carries out cross-straight-intersection transformation of electrical energy, powers for contact net electricity split-phase neutrality section N；
Train directions and position detection unit, comprising train position sensor and its signal processor, the train position
It puts sensor and train wheel shaft signal is sent to signal processor, for detecting the position of the travel direction of train and arrival；
Wherein, the high voltage switch unit includes：Three high-voltage circuitbreakers QF1, QF2, QF4 and rc absorber RC,
The feed-in busbar connection α phases of the circuit breaker Q F1 draw busbar, and the feed-in busbar connection β phases of the circuit breaker Q F2 draw mother
The busbar that feeds out of line, the circuit breaker Q F1 and circuit breaker Q F2 link together, and form a public even point and are connected to ground
Electric split-phase is continuously powered the high input voltage terminal of converter plant BLQ, and ground electricity split-phase is continuously powered the high pressure feedback of converter plant BLQ
Go out the feed-in busbar that terminal is connected to the circuit breaker Q F4, the busbar that feeds out of circuit breaker Q F4 is connected in contact net electricity split-phase
Property section N, the HV Terminal of the rc absorber RC are connected to the feed-in busbar of circuit breaker Q F4 or feed out on busbar, the other end
It is directly grounded.
Specifically, when train crosses split-phase, neutral section is controlled to power on the sliding continuous commutation of pressing, be that contact net electricity split-phase is neutral
Duan Lianxu powers, and realizes that train does not power off excessive phase, and will not generate electric arc and overvoltage, over-current shock etc..Such as Fig. 1 institutes
Show, TF1, TF2 are α phases supply arm and β phase supply arms in system of the present invention, draw mother by the α phases of traction substation respectively
Line draws bussed supply with β phases, and the JY1 and JY2 between α phases supply arm and β phase supply arms are the split-phase joint of electric split-phase, and N is
The neutral section non-Electric region of electric split-phase, TR represent train, and arrow direction represents the positive direction of train driving, including high-voltage switch gear list
Member, for pair drawing busbar with α phases, β phases and α phases, the relevant high voltage power supply of β phase traction power supply arms are cut-off, including four
Platform high-voltage circuitbreaker QF1, QF2, QF3, QF4 and accessory power supply conversion equipment FZDY and rc absorber RC, high-voltage switch gear list
Member should further include the electric current, voltage transformer and comprehensive automation protection screen of the disconnecting switch mating with breaker and signal detection
Deng.
The feed-in busbar connection α phases of circuit breaker Q F1 draw busbar, and the feed-in busbar connection β phases of the circuit breaker Q F2 are drawn
The busbar that feeds out of busbar, circuit breaker Q F1 and circuit breaker Q F2 link together, and form a public even point and are connected to breaker
The feed-in busbar of QF3, circuit breaker Q F3 feed out busbar be connected to ground electricity split-phase continuously power converter plant BLQ high pressure it is defeated
Entering terminal, electricity split-phase continuously the power high pressure of converter plant BLQ in ground feeds out the feed-in busbar that terminal is connected to circuit breaker Q F4,
The neutral section N for feeding out busbar and being connected to contact net electricity split-phase of circuit breaker Q F4, the accessory power supply converting means FZDY connections
On the common bus fed out between the feed-in of circuit breaker Q F3 of circuit breaker Q F1 and circuit breaker Q F2, taken from high voltage bus
, the various accessory power supplys after accessory power supply conversion equipment FZDY lowering and stabilizing blood pressures needed for output system operation, the capacitance-resistance
The HV Terminal of absorber RC is connected to the feeding out on busbar of circuit breaker Q F4, and the other end is directly grounded；High voltage switch unit can be with
It is to be combined in the form of box-type substation, is also dispersed in traction substation (or subregion institute), to prevent α from drawing busbar
Busbar is drawn due to maloperation short circuit with β phases, and circuit breaker Q F1 and circuit breaker Q F2 (and its mating disconnecting switch) progress are reciprocal
Interlocked control design, i.e. circuit breaker Q F1 (and its disconnecting switch) be closed when, circuit breaker Q F2 (and its disconnecting switch) divides by force
It is disconnected, when circuit breaker Q F2 (and its disconnecting switch) is closed, circuit breaker Q F1 (and its disconnecting switch) disjunction by force；Circuit breaker Q F1 or
QF2, QF3, QF4 are closed when the present embodiment automatic passing over of neutral section uninterruptible power supply system is put into, when system works, high-voltage switch gear list
First no longer switch motion, only when system exits or all high-voltage switch gear ability disjunctions during failure in high voltage switch unit.
The occasion of accessory power supply is voluntarily generated for not needing to system, as an improvement of the present invention, on the basis of Fig. 1,
High voltage switch unit can cancel accessory power supply converting means FZDY and circuit breaker Q F3 (and its mating disconnecting switch), and system is former
Reason figure can simplify as shown in Figure 2.But high voltage switch unit is unlimited comprising these equipment, also may include matched keep apart
It closes and current transformer, voltage transformer and complex protection device for signal detection etc..Accessory power supply converting means FZDY
Specific circuit form is not limited, can export specific accessory power supply according to system requirements.Capacitance-resistance is inhaled in embodiment of the present invention
It receives device and is connected on the feeding out on busbar of QF4, this is a kind of better embodiment, can also be connected on the feed-in busbar of QF4 as needed
On.
By this system, electric split-phase neutrality section is supplied continuously, unpowered dead zone, and train can not be powered off through electricity point
Phase is not felt by the presence of electric split-phase；It is powered by ground automatic passing over of neutral section uninterruptible power supply system to contact net electricity split-phase, train
It is generated during crossing split-phase without overvoltage, over-current shock, no electric arc；Ground automatic passing over of neutral section uninterruptible power supply system employs big
Power power electronics converter plant is as core component, and service life is long, and operation maintenance cost is low.
On the basis of above-described embodiment, the ground electricity split-phase continuously power converter plant BLQ use input for drop
Pressure transformer, output are step-up transformer, and high-low-high converter plant topology of the centre for low-voltage power electronics converter plant is
It is made of single-phase Multiple coil rectifier transformer (1), single-phase Multiple coil contravariant transformer (5) and back-to-back four quadrant convertor
Cross-straight-intersection electrical energy changer, the back-to-back four quadrant convertor include rectification unit (2), direct current component (3) and inverse
Become converter unit (4), rectification unit (2) and inversion converter unit (4) contain n power module respectively, and each power module is equal
Using identical H bridge translation circuits, there are one high-voltage winding AX for the rectifier transformer (1) primary side, connect circuit breaker Q F3's
Busbar is fed out, secondary side there are n low pressure windings a1x1, a2x2 to the power supply of current transformer rectification unit power module to anxn, single-phase
Multiple coil contravariant transformer (5) primary side has low pressure winding c1x1, c2x2 of n connection current transformer inversion converter unit power module
To cmxm, there are one the feed-in busbares of high-voltage winding CX connection circuit breaker Qs F4 for secondary side；Wherein, n and m is the nature more than 1
Number.
The converter plant BLQ specifically, ground electricity split-phase is continuously powered, hand over for the traction busbar power supply to access-
Directly-and transformation of electrical energy is handed over, it powers for contact net electricity split-phase neutrality section N, ground electricity split-phase of the invention is continuously powered converter plant BLQ
It is the four-quadrant converter plant based on power electronic devices, four-quadrant unsteady flow converter plant input, output are traction busbar
High pressure develops according to current electric electronic current change technology, and there are two types of unsteady flow topology, a kind of topology is that input has downconverter
Device, output have step-up transformer, and centre is the high-low-high converter plant topology of low-voltage power electronics converter plant, and another kind is
Input, output are direct Gao-high converter topology of high-vol.
It is by single-phase Multiple coil rectification using the ground electricity split-phase of the high-low-high unsteady flow topology converter plant BLQ that continuously powers
The cross-straight-intersection electrical energy changer of transformer T1, single-phase Multiple coil contravariant transformer and back-to-back four quadrant convertor composition,
The back-to-back four quadrant convertor includes rectification unit and inversion converter unit, and rectification unit contains n power module, inverse
Become converter unit and contain m inverted power module, there are one rectifier transformer T1 primary sides high-voltage winding AX, secondary side to have n
It is a to give low pressure winding a1x1, a2x2 that current transformer rectification unit power module is powered to anxn, single-phase Multiple coil contravariant transformer
Primary side has low pressure winding c1x1, c2x2 of m connection current transformer inversion converter unit power module to cmxm, and there are one high for secondary side
Press winding CX.
For continuously being powered converter plant using the ground electricity split-phase of high-low-high unsteady flow topology, a kind of realization method such as figure
Shown in 4, mainly (converted by single-phase Multiple coil rectifier transformer T11, four quadrant convertor comprising rectification unit 2, DC isolation single
Member 3 and inversion converter unit 4), single-phase Multiple coil contravariant transformer 5 forms；The rectification unit 2 of four quadrant convertor and inversion become
Unit 4 is changed respectively containing each power modules of n, and each power module uses identical H bridge translation circuits；Single-phase Multiple coil rectification
1 primary sides of transformer T1 are high-voltage winding AX, and (or QF1, QF2 shown in Fig. 2 are public feeds out for the busbar that feeds out of connection QF3 breakers
Busbar), secondary side has the low pressure windings (a1x1, a2x2 ..., anxn) of n to the power supply of current transformer rectification unit power module, single-phase
5 primary side of Multiple coil contravariant transformer have n connection current transformer inversion converter unit power module low pressure winding (c1x1,
C2x2 ..., cnxn), for secondary side there are one high-voltage winding (CX), the output of each low pressure winding to be connected to 2 corresponding n of rectification unit
The ac input end of a power module (PM1, PM2 ..., PMn), the ac output end of n power module of inverter side are connected to list
In n low pressure winding of phase Multiple coil contravariant transformer 5, the high-voltage winding AX connections of single-phase 5 secondary side of Multiple coil contravariant transformer
The feed-in busbar of circuit breaker Q F4.Needs are designed according to system, the secondary side of single-phase Multiple coil rectifier transformer T1 1 can also design it
Its auxiliary winding, such as to transformer pre-magnetizing etc..
On the basis of above-described embodiment, each power module is each described using two level H-bridge translation circuits
The DC side of power module is comprising a positive direct-current busbar and a negative dc bus, the positive direct-current busbar of all power modules
Parallel connection forms a total public positive direct-current busbar, the negative dc bus parallel connections of all power modules formed one it is total public negative
Dc bus.
On the basis of the various embodiments described above, the power module can also use three level H-bridge translation circuits, each
The DC side of the power module includes a positive direct-current busbar, a zero level dc bus and a negative dc bus,
The positive direct-current busbar parallel connection of all power modules forms a total public positive direct-current busbar, and the zero level of all power modules is straight
It flows busbar parallel connection and forms a total public zero level dc bus, the negative dc bus parallel connection of all power modules forms one
Total public negative dc bus.
Specifically, the improvement as the embodiment, as shown in fig. 6, it is three electricity that second of embodiment, which is power module,
Flat H bridges translation circuit, the DC side of each power module are female there are one positive direct-current busbar, zero level dc bus and negative direct current
Line, by the DC side positive direct-current busbar of all power modules is in parallel, zero level dc bus is in parallel, negative dc bus is in parallel, shape
Into one it is total it is public just, zero, negative dc bus.
On the basis of above-described embodiment, it is preferred that the power module uses two level H-bridge translation circuits, and inverse
The power module quantity m for becoming converter unit is equal with the power module quantity n of rectifying conversion unit, and the back-to-back four-quadrant becomes
Stream device is made of n electrically completely self-contained back-to-back four-quadrant unsteady flow subelements, and back-to-back four-quadrant unsteady flow is single
Member is made of a rectified power module and an inverter side power module, and the positive direct-current of both power module DC sides is female
In parallel, the negative dc bus parallel connection of line obtains a public dc bus subelement.
Specifically, the power module uses three level H-bridge translation circuits, and the power module number of inversion converter unit
It is equal with the power module quantity n of rectifying conversion unit to measure m, the back-to-back four quadrant convertor is electrically completely only by n
Found the composition of back-to-back four-quadrant unsteady flow subelement, the back-to-back four-quadrant unsteady flow subelement by a rectified power module and
One inverter side power module composition, the DC side of each power module there are one positive direct-current busbar, zero dc bus and
One negative dc bus, by the positive direct-current busbar of both power module DC sides is in parallel, zero dc bus is in parallel, negative direct current is female
Line parallel connection obtains a public dc bus subelement.
The third embodiment is improved, it is three level H-bridges that the 4th kind of embodiment, which is current transformator power module,
Translation circuit, four quadrant convertor are made of n electrically completely self-contained current transforming units, wherein, current transforming unit has public straight
Stream busbar have just, zero, negative dc bus.
On the basis of the various embodiments described above, the power module uses the two level H-bridge translation circuits based on IGBT,
It is made of Support Capacitor 61, IGBT and anti-paralleled diode 62, current sensor 63 and fuse output 64.
Specifically, with reference to figure 5, the power module PM of rectification unit and inversion converter unit is based on two level H-bridges of IGBT
Mapped structure, mainly by the groups such as Support Capacitor 61, IGBT and anti-paralleled diode 62, current sensor 63, fuse output 64
Into.All positive direct-current busbares of rectified power module and inverted power module are all connected in parallel, all negative direct currents are female
Line is all connected in parallel, and forms a public direct current component 3, and direct current component includes Support Capacitor and discharge circuit etc..
It continuously powers as electricity split-phase in ground shown in Fig. 4 a kind of improvement of converter plant, by the power mould of converter plant
Block (PM) changes three level H-bridge translation circuits into, then electricity split-phase in ground is continuously powered improvement realization method such as Fig. 6 institutes of converter plant
Show, the positive direct-current busbar of the DC side of all power modules is in parallel, zero dc bus is in parallel, negative dc bus is in parallel, forms one
It is a it is public just, zero, negative dc bus unit 3.
On the basis of the various embodiments described above, a kind of circuits of the three electrical level power modules PM are as shown in fig. 7, be to be based on
The power module of the three level H-bridge mapped structure of diode-clamped of IGBT, mainly by Support Capacitor 71, clamp diode 72,
The compositions such as IGBT and anti-paralleled diode 73, current sensor 74, fuse output 75.
On the basis of the various embodiments described above, the three electrical level power modules PM another kinds circuit is as shown in figure 8, be to be based on
The power module of three level H-bridge mapped structures of IGCT diode-clampeds is mainly limited by Absorption Capacitance 81, DC-LINK links
Galvanic electricity sense 82, DC-LINK links diode 83, DC-LINK links resistance 84, two pole of clamp diode 85, IGCT and inverse parallel
The compositions such as pipe 86, current sensor 87, fuse output 88.
It continuously powers to electricity split-phase in ground shown in Fig. 4 a kind of improvement of converter plant, by current transformer by common DC bus
Design makes n independent direct current busbar into, and device is mainly by single-phase Multiple coil rectifier transformer T1 1, n independent back-to-back four-quadrant
Limit power cell, single-phase Multiple coil contravariant transformer T2 5 are formed, and independent four-quadrant power cell back-to-back is containing there are one rectification H
Bridge power module and an inversion H bridge power module.When power module uses two level H-bridges translation circuit shown in fig. 5, ground
Electric split-phase continuously power converter plant improvement realization method as shown in figure 9, power module using the electricity of Fig. 6 or shown in Fig. 7 three
During flat H bridges translation circuit, ground electricity split-phase continuously power converter plant improvement realization method it is as shown in Figure 10.
On the basis of the various embodiments described above, the ground electricity split-phase continuously power converter plant BLQ using input, it is defeated
Go out be high-vol direct Gao-high converter topology, by precharge unit 11, MMC rectification units 12, intermediate dc every
It is formed from converter unit 13 and MMC inversions converter unit 14；The precharge unit 11 is by main switch QF and pre-charge resistance R
Composition；The MMC rectification units 12 and MMC inversions converter unit 14 are comprising two bridge arms in left and right, and each bridge arm is by symmetrical
Upper and lower half-bridge composition, the upper and lower half-bridge contains that there are one reactor 15 and the n power modules 16 that are connected in series respectively；
The power module 16 be the semi-bridge alternation circuit based on IGBT power devices, by IGBT and anti-paralleled diode T1 161,
T2, discharge resistance Rd 162 and Support Capacitor C 163 are formed.
Specifically, using the device of Gao-high unsteady flow topology mainly by being based on the rectification list of modular multilevel (MMC) topology
Member, DC isolation converter unit, the inversion converter unit composition based on modular multilevel (MMC) topology.Device directly will be by
The traction busbar high voltage power supply access device that the breaker of high voltage switch unit is gated and fed out, high frequency is carried out by rectification unit
Rectification generates total rectification side DC bus-bar voltage.DC isolation converter unit is by multiple DC isolation conversion module DC sides
It is composed in series, commutating DC busbar and inversion direct current busbar is mainly subjected to electrical isolation.According to train directions and position detection
Unit detects the position and direction that train reaches, in due course startup inversion converter unit work one phase amplitude and specific of output and phase
The voltage of position, feeds out contact net neutrality section, during train crosses split-phase by a high-voltage circuitbreaker of high voltage switch unit
It continuously powers for neutral section.
Wherein, the power module 16 further includes 164 He of thyristor for being connected in parallel on the anti-paralleled diode T2 sides
By-pass switch 165；The intermediate dc isolated variable unit 13 is direct in DC side by m DC isolation conversion module DCM 17
It is composed in series；Wherein, m is the natural number more than 1.
For continuously being powered converter plant using the ground electricity split-phase of direct Gao-high unsteady flow topology, a kind of realization method is such as
Shown in Figure 11, mainly by precharge unit 11, MMC rectification units 12, DC isolation converter unit 13, MMC inversion converter units
14 compositions.Precharge unit 11 is made of main switch QF and pre-charge resistance R, and major function is in device before device work
Direct current component charges, after charging complete, closure main switch QF.MMC rectification units 12 and inversion converter unit 14 are comprising left and right
Two bridge arms, each bridge arm are made of symmetrical upper and lower half-bridge, and upper and lower half-bridge is respectively containing there are one reactor 15 and n power
Module 16 is directly composed in series.Power module 16 is the semi-bridge alternation circuit based on IGBT power devices, and a kind of embodiment is such as
Shown in Figure 12, mainly by IGBT and anti-paralleled diode T1 161, IGBT and anti-paralleled diode T2 161, discharge resistance Rd
162nd, Support Capacitor C 163 is formed.
It needs to exit, and require the occasion for being resistant to high current in short-term, MMC current transforming units during for needing module failure
Power module 16 a kind of improvement embodiment it is as shown in figure 13, mainly by IGBT and anti-paralleled diode T1 161, IGBT
And the devices such as anti-paralleled diode T1 161, discharge resistance Rd 162, Support Capacitor C 163, thyristor 164, by-pass switch 165
Composition.Intermediate dc isolated variable unit 13 is existed according to the size of direct current total voltage by m DC isolation conversion module DCM 17
DC side is directly composed in series.
On the basis of the various embodiments described above, a kind of embodiment such as Figure 14 institutes of DC isolation conversion module DCM 17
Show, the DC isolation conversion module DCM 17 is isolated by rectification side Support Capacitor Cz 171, DC-AC-AC-DC
Converter unit 172, inverter side Support Capacitor Cn 173 are formed, and wherein DC-AC-AC DC isolated variable unit 172 is
Become by H bridge type DC-AC converters (being made of T1, T2, T3, T4 electronic power switch device), reactor Lr, intermediate frequency (or high frequency)
The DC-DC converter that depressor Tr and AC-DC converter (being made of T5, T6, T7, T8 electronic power switch device) form.
There is D.C. magnetic biasing during the work time in intermediate frequency (or high frequency) transformer Tr to prevent, changes as to the present invention
Into the another embodiment of DC isolation conversion module DCM 17 is as shown in figure 15, and the place different from the implementation of Figure 14 is
Intermediate frequency (or high frequency) the transformer Tr of DC-DC converter script winding and time become winding and respectively connected a blocking electricity
Hold Cr.
For high-power applications occasion, to improve the capacity of device, as improvement of the present invention, DC isolation becomes mold changing
A kind of improvement embodiment of block DCM 17 is as shown in figure 16, it is characterized in that DC-AC-AC DC isolated variable unit
172 are made of k DC-DC converter in DC side parallel.
The invention also includes train directions and position detection units, and it includes train position sensor and its signal processings
Train wheel shaft signal is sent to signal processor by machine, the train position sensor, for detecting the travel direction of train
And the position reached.
On the basis of above-described embodiment, the train directions and position detection unit include：Sensor J1, sensor
J1 ', sensor J2, sensor J2 ', sensor J3 and sensor J3 ', wherein sensor J1 and sensor J1 ' are mounted on belonging to α
The rail both sides of phase traction power supply arm region, sensor J2 and sensor J2 ' are mounted on the rail for belonging to neutral section intermediate region
Both sides, sensor J3 and sensor J3 ' are mounted on the rail both sides for belonging to β phase traction power supply arm regions.
Preferably, the train directions and position detection unit include：Sensor J1, sensor J1 ', sensor J21,
Sensor J21 ', sensor J22, sensor J22 ', sensor J3 and sensor J3 ' totally four pairs of sensors, wherein sensor J1
It is mounted on sensor J1 ' mounted on the rail both sides for belonging to α phase traction power supply arm regions, sensor J21 and sensor J21 '
It is close mounted on neutral section is belonged to close to the rail both sides of JY1 joint areas, sensor J22 and sensor J22 ' to belong to neutral section
The rail both sides of JY2 joint areas, sensor J3 and sensor J3 ' are mounted on the rail two for belonging to β phase traction power supply arm regions
Side；During train forward travel, using sensor J1, sensor J1 ', sensor J22, sensor J22 ', sensor J3 and sensing
Three pairs of sensors of device J3 ' are as detection unit；When train backward going, using sensor J1, sensor J1 ', sensor
Three pairs of J21, sensor J21 ', sensor J3 and sensor J3 ' sensors are as detection unit.
Specifically, the embodiment of the present invention also provides train directions and position detection unit, it includes train position sensors
And its train wheel shaft signal is sent to signal processor by signal processor, the train position sensor, for detecting row
The travel direction of vehicle and the position of arrival.
Made in system using sensor J1, sensor J1 ', sensor J2, sensor J2 ', sensor J3 and sensor J3 '
For detection unit, for detecting the travel direction of train and in-position.Wherein J1 and J1 ' a pair of sensors, which are mounted on, belongs to α
The mutually rail both sides of power supply arm region, J2 and J2 ' a pair of sensors are mounted on the rail both sides for belonging to neutral section intermediate region, J3
It is mounted on J3 ' a pair of sensors and belongs to β phases and power the rail both sides of arm region, as shown in Figure 1.
The distance between sensor J1 and J1 ' and sensor J2 and J2 ' for L1, sensor J2 and J2 ' and sensor J3 and
The length that the distance between J3 ' is L2, L1 and L2 is calculated by the length of residing railway highest train running speed and train
It obtains, is generally determined jointly by Railway Design institute and the system development unit.
In order to reduce the length of neutral section contact net, a kind of improvement embodiment of above-mentioned detection unit is using sensor
J1, sensor J1 ', sensor J21, sensor J21 ', sensor J22, sensor J22 ', sensor J3 and sensor J3 ' totally 8
A sensor, wherein J1 and J1 ' a pair of sensors, which are mounted on, to be belonged to α phases and powers the rail both sides of arm region, and J21 and J21 ' are a pair of
Sensor is mounted on and belongs to close to the rail both sides of JY1 joint areas, J22 and J22 ' a pair of sensors mounted on neutral section is belonged to
Close to the rail both sides of JY2 joint areas, J3 and J3 ' a pair of sensors are mounted on to be belonged to β phases and powers the iron of arm region neutral section
It is as shown in Figure 3 to improve system for rail both sides.
The distance between sensor J1 and J1 ' and sensor J21 and J21 ' are L1, sensor J21 and J21 ' and sensor
The distance between J22 and J22 ' are L2, and the distance between sensor J22 and J22 ' and sensor J3 and J3 ' are L3, L1, L2, L3
Length be calculated by the length of residing railway highest train running speed and train, generally by Railway Design institute and institute
System development unit is stated to determine jointly.
During train forward travel, using J1, J1, three pairs of ', J22, J22 ', J3 and J3 ' sensors work as row as detection unit
During vehicle backward going, using J1, J1, three pairs of ', J21, J21 ', J3 and J3 ' sensors are as detection unit.
Illustrate that the operation principle of the ground automatic passing over of neutral section uninterruptible power supply system is as follows with system diagram shown in FIG. 1：
1. assume α phase supply arm voltagesβ phase supply arm voltagesBefore train pantograph does not reach A points, ground electricity split-phase is continuously powered change
Stream device is in standby mode, and neutral section voltage is 0.
2. when train pantograph reaches A points (J1 positions), start ground electricity split-phase continuously power converter plant output, in
Property section voltage isBefore train pantograph in-position B points, in control
Property section voltage and α phase supply arm voltages are fully synchronized, i.e. Un=Uα, ωn=ω0,Train is supplied by α phases supply arm at this time
Electricity.
3. when train pantograph reaches B points, neutral section and α phase supply arms are grid-connected due to the short circuit of pantograph, control
Electricity split-phase converter plant output current of continuously powering in ground increases to the actually required electric current of train by 0, the electricity that α phases supply arm provides
Stream is declined by train actual current, and train pantograph completes the change of current before reaching C points, and train is by α phases supply arm and neutral section at this time
It powers simultaneously.
4. train pantograph leaves C points, before train reaches D points (J2 positions), voltage and α phases in neutral section are controlled
Supply arm voltage synchronous, train by ground electricity split-phase continuously power converter plant power supply neutral section power.
5. when train pantograph reaches D points (J2 positions), with β phase supply arms voltage, target, control device are defeated in order to control
The frequency for going out voltage is ωn=ω0π (the f of ± Δ ω=20± Δ f), then existLater, neutral section voltage
Phase is close to β phase supply arm voltage-phases, i.e.,When(ε is the phase error model of setting
Enclose) when, it enablesωn=ω0, you can so that the frequency of the frequency and phase of neutral section voltage and β phase supply arm voltages and
Phase is equal.Appropriate control is carried out as target using β phase voltages amplitude to neutral section voltage magnitude simultaneously so that neutral section electricity
Be pressed in train pantograph reach before E points can by with α phase supply arm voltages (uα) synchronous smooth conversion arrive it is electric with β phases supply arm
Press (uβ) synchronous, realize the continuous commutation control of frequency conversion phase shift, train is powered by neutral section.
6. when train pantograph reaches E points, start the electric current that ground electricity split-phase is controlled continuously to power converter plant and decline,
β phase supply arm electric currents rise naturally, and pantograph completes the change of current before reaching F points, and train is powered by neutral section with β phases during this
Arm is powered simultaneously.
7. when train pantograph leaves F points, train is before leaving G points (J3 positions) completely, controls neutral section voltage dimension
It holds fully synchronized with β phase supply arm voltages.
8. when train leaves G points (J3 positions) completely, ground electricity split-phase is continuously powered, and converter plant is standby, and neutral section is electric
Pressure is restored to 0.
During train train running in reverse direction, control process and forward direction driving are exactly the opposite, and the sequence of J3, J2, J1 are reached according to train
Neutral section voltage is controlled first to be transformed into conversion synchronous with α phase voltages by being synchronized to β phase voltages by above-mentioned 8 step control principle, it is real
Existing neutrality section is continuously powered.
In order to reduce the length of neutral section contact net, using improved train directions and position detection embodiment, such as Fig. 3
Three pairs of ', J22, J22 ', J3 and J3 ' sensors are as detection unit shown, during train forward travel, using J1, J1, by above-mentioned
Principle control ground electricity split-phase is continuously powered converter plant.When train backward going, using J1, J1 ', J21, J21 ', J3 and
Three pairs of sensors of J3 ' are continuously powered converter plant by above-mentioned train running in reverse direction principle control ground electricity split-phase as detection unit.
Finally, the present processes are only preferable embodiment, are not intended to limit the scope of the present invention.It is all
Within the spirit and principles in the present invention, any modification, equivalent replacement, improvement and so on should be included in the protection of the present invention
Within the scope of.
Claims (17)
1. a kind of electric railway ground electricity split-phase uninterruptible power supply system, which is characterized in that including：
High voltage switch unit, for drawing busbar to α phases, β phases draw busbar, α phases and the relevant high-voltage electricity of β phase traction power supply arms
It is cut-off in source；
Ground electricity split-phase is continuously powered converter plant BLQ, for being based on device for high-power power electronic, to the traction busbar of access
Power supply carries out cross-straight-intersection transformation of electrical energy, powers for contact net electricity split-phase neutrality section N；
Train directions and position detection unit, comprising train position sensor and its signal processor, the train position passes
Train wheel shaft signal is sent to signal processor by sensor, for detecting the position of the travel direction of train and arrival；
Wherein, the high voltage switch unit includes：Three high-voltage circuitbreakers QF1, QF2, QF4 and rc absorber RC, it is described
The feed-in busbar connection α phases of circuit breaker Q F1 draw busbar, and the feed-in busbar connection β phases of the circuit breaker Q F2 draw busbar, institute
The busbar that feeds out for stating circuit breaker Q F1 and circuit breaker Q F2 links together, and forms a public even point and is connected to ground electricity split-phase
The high input voltage terminal of continuous power supply converter plant BLQ, continuously the power high pressure of converter plant BLQ of ground electricity split-phase feed out terminal
It is connected to the feed-in busbar of the circuit breaker Q F4, the neutral section N for feeding out busbar and being connected to contact net electricity split-phase of circuit breaker Q F4,
The HV Terminal of the rc absorber RC is connected to the feed-in busbar of circuit breaker Q F4 or feeds out on busbar, and the other end directly connects
Ground.
2. a kind of electric railway ground electricity split-phase uninterruptible power supply system according to claim 1, which is characterized in that described
High voltage switch unit further include feed-in busbar and the open circuit of circuit breaker Q F3 and accessory power supply converting means FZDY, circuit breaker Q F3
The busbar that feeds out of device QF1 circuit breaker Qs F2 links together, and the busbar that feeds out of circuit breaker Q F3 is connected to ground electricity split-phase and continuously supplies
The high input voltage terminal of electric converter plant BLQ, the accessory power supply converting means FZDY be connected to the feeding out of circuit breaker Q F1,
On the common bus fed out between the feed-in of circuit breaker Q F3 of circuit breaker Q F2.
3. a kind of electric railway ground electricity split-phase uninterruptible power supply system according to claim 2, which is characterized in that described
Ground electricity split-phase continuously power that use input for step-down transformer, output be step-up transformer to converter plant BLQ, intermediate is low
Piezoelectric forces electronics converter plant high-low-high converter plant topology, be by single-phase Multiple coil rectifier transformer (1), it is single-phase mostly around
The cross-straight-intersection electrical energy changer of group contravariant transformer (5) and back-to-back four quadrant convertor composition, described back-to-back four
Quadrant convertor includes rectification unit (2), direct current component (3) and inversion converter unit (4), rectification unit (2) and inversion transformation
Unit (4) is respectively containing n power module, and each power module is using identical H bridge translation circuits, the rectifier transformer
There are one high-voltage winding AX for device (1) primary side, and connection circuit breaker Q F3's feeds out busbar, and secondary side has n to current transformer rectification unit work(
For low pressure winding a1x1, a2x2 of rate module for power supply to anxn, single-phase Multiple coil contravariant transformer (5) primary side has n connection unsteady flow
Low pressure winding c1x1, c2x2 of device inversion converter unit power module is to cmxm, and there are one high-voltage winding CX connections open circuits for secondary side
The feed-in busbar of device QF4；
Wherein, n and m is the natural number more than 1.
4. a kind of electric railway ground electricity split-phase uninterruptible power supply system according to claim 3, which is characterized in that each
For the power module using two level H-bridge translation circuits, the DC side of each power module includes a positive direct-current
Busbar and a negative dc bus, the positive direct-current busbar parallel connection of all power modules form a total public positive direct-current busbar,
The negative dc bus parallel connection of all power modules forms a total public negative dc bus.
5. a kind of electric railway ground electricity split-phase uninterruptible power supply system according to claim 3, which is characterized in that each
For the power module using three level H-bridge translation circuits, the DC side of each power module includes a positive direct-current
Busbar, a zero level dc bus and a negative dc bus, the positive direct-current busbar parallel connection of all power modules form one
Total public positive direct-current busbar, the zero level dc bus parallel connection of all power modules form a total public zero level direct current
Busbar, the negative dc bus parallel connection of all power modules form a total public negative dc bus.
6. a kind of electric railway ground electricity split-phase uninterruptible power supply system according to claim 3, which is characterized in that described
Power module uses two level H-bridge translation circuits, and the power module quantity m of inversion converter unit and rectifying conversion unit
Power module quantity n is equal, and the back-to-back four quadrant convertor is by n electrically completely self-contained back-to-back four-quadrant unsteady flows
Subelement forms, and the back-to-back four-quadrant unsteady flow subelement is by a rectified power module and an inverter side power module group
Into it is female that in parallel, the negative dc bus parallel connection of the positive direct-current busbares of both power module DC sides is obtained a public direct current
Line subelement.
7. a kind of electric railway ground electricity split-phase uninterruptible power supply system according to claim 3, which is characterized in that described
Power module uses three level H-bridge translation circuits, and the power module quantity m of inversion converter unit and rectifying conversion unit
Power module quantity n is equal, and the back-to-back four quadrant convertor is electrically completely independent back-to-back four-quadrant unsteady flow by n
The composition of unit, the back-to-back four-quadrant unsteady flow subelement is by a rectified power module and an inverter side power module group
Into, each power module DC side there are one positive direct-current busbar, zero dc bus and a negative dc bus, by this two
The positive direct-current busbar of kind of power module DC side is in parallel, in parallel, the negative dc bus parallel connection of zero dc bus obtain one it is public
Dc bus subelement.
8. a kind of electric railway ground electricity split-phase uninterruptible power supply system according to claim 3 or 4, which is characterized in that
Each power module is using the two level H-bridge translation circuits based on IGBT, the two level H-bridges transformation based on IGBT
Circuit is mainly by Support Capacitor (61), IGBT and anti-paralleled diode (62), current sensor (63) and fuse output (64)
Composition.
9. a kind of electric railway ground electricity split-phase uninterruptible power supply system according to claim 3 or 5, which is characterized in that
Each power module is using the three level H-bridge translation circuits based on IGBT, the three level H-bridges transformation based on IGBT
Circuit mainly by Support Capacitor (71), clamp diode (72), IGBT and anti-paralleled diode (73), current sensor (74) and
Fuse output (75) forms.
10. a kind of electric railway ground electricity split-phase uninterruptible power supply system according to claim 3 or 5, which is characterized in that
The power module uses the three level H-bridge translation circuits based on IGCT diode-clampeds, by Absorption Capacitance (81), DC-
LINK links current-limiting inductance (82), DC-LINK links diode (83), DC-LINK links resistance (84), clamp diode
(85), IGCT and anti-paralleled diode (86), current sensor (87) and fuse output (88) composition.
A kind of 11. electric railway ground electricity split-phase uninterruptible power supply system according to claim 2, which is characterized in that institute
The ground electricity split-phase stated continuously power converter plant BLQ using input, output be high-vol direct Gao-high current transformer
Topology is converted single by precharge unit (11), MMC rectification units (12), intermediate dc isolated variable unit (13) and MMC inversions
First (14) composition；The precharge unit (11) is made of main switch QF and pre-charge resistance R；The MMC rectification units
(12) and MMC inversions converter unit (14) is comprising two bridge arms in left and right, and each bridge arm is made of symmetrical upper and lower half-bridge, institute
The upper and lower half-bridge stated is respectively containing there are one reactors (15) and the n power module (16) being connected in series；The power module
(16) it is the semi-bridge alternation circuit based on IGBT power devices, by IGBT and anti-paralleled diode T1 (161), T2, discharge resistance
Rd (162) and Support Capacitor C (163) compositions.
A kind of 12. electric railway ground electricity split-phase uninterruptible power supply system according to claim 11, which is characterized in that institute
The power module (16) stated further includes the thyristor (164) and by-pass switch for being connected in parallel on the anti-paralleled diode T2 sides
(165)；The intermediate dc isolated variable unit (13) is directly gone here and there by m DC isolation conversion module DCM (17) in DC side
Connection composition；
Wherein, m is the natural number more than 1.
A kind of 13. electric railway ground electricity split-phase uninterruptible power supply system according to claim 12, which is characterized in that institute
The DC isolation conversion module DCM (17) stated is become by rectification side Support Capacitor Cz (171), DC-AC-AC-DC isolation
Change unit (172), inverter side Support Capacitor Cn (173) compositions, the wherein DC-AC-AC-DC isolated variable list
First (172) are made of H bridge type DC-AC converters, reactor Lr, transformer Tr and AC-DC converter.
A kind of 14. electric railway ground electricity split-phase uninterruptible power supply system according to claim 13, which is characterized in that institute
The script winding of the transformer Tr stated and time become winding and respectively connected a capacitance Cr.
A kind of 15. electric railway ground electricity split-phase uninterruptible power supply system according to claim 13, which is characterized in that institute
DC-AC-AC-DC isolated variable unit (172) is stated to be made of in DC side parallel k DC-DC converter；
Wherein, k is the natural number more than 1.
A kind of 16. electric railway ground electricity split-phase uninterruptible power supply system according to claim 1, which is characterized in that institute
The train directions and position detection unit stated include：Sensor J1, sensor J1 ', sensor J2, sensor J2 ', sensor J3
With sensor J3 ', wherein sensor J1 and sensor J1 ' mounted on the rail both sides for belonging to α phase traction power supply arm regions, sensing
Device J2 and sensor J2 ' is mounted on the rail both sides for belonging to neutral section intermediate region, and sensor J3 and sensor J3 ' are mounted on category
In the rail both sides of β phase traction power supply arm regions.
A kind of 17. electric railway ground electricity split-phase uninterruptible power supply system according to claim 1, which is characterized in that institute
The train directions and position detection unit stated include：Sensor J1, sensor J1 ', sensor J21, sensor J21 ', sensor
Totally four pairs of sensors, wherein sensor J1 and sensor J1 ' are mounted on by J22, sensor J22 ', sensor J3 and sensor J3 '
Belong to the rail both sides of α phase traction power supply arm regions, sensor J21 and sensor J21 ' mounted on belonging to neutral section close to JY1
The rail both sides of joint area, sensor J22 and sensor J22 ' are mounted on belonging to rail of the neutral section close to JY2 joint areas
Both sides, sensor J3 and sensor J3 ' are mounted on the rail both sides for belonging to β phase traction power supply arm regions；During train forward travel,
Using three pairs of sensor J1, sensor J1 ', sensor J22, sensor J22 ', sensor J3 and sensor J3 ' sensor conducts
Detection unit；When train backward going, using sensor J1, sensor J1 ', sensor J21, sensor J21 ', sensor
Three pairs of sensors of J3 and sensor J3 ' are as detection unit.
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