CN107947597A - A kind of multifunctional railway power conditioner - Google Patents
A kind of multifunctional railway power conditioner Download PDFInfo
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- CN107947597A CN107947597A CN201711215845.2A CN201711215845A CN107947597A CN 107947597 A CN107947597 A CN 107947597A CN 201711215845 A CN201711215845 A CN 201711215845A CN 107947597 A CN107947597 A CN 107947597A
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- switch
- interlocking switch
- interlocking
- transformer
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Classifications
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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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
-
- 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
- H02M1/007—Plural converter units in cascade
-
- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
Abstract
The present invention relates to a kind of multifunctional railway power conditioner, including multiwinding transformer, cascade multilevel converter, interlocking switch QF1 and QF2, wave filter, bidirectional triode thyristor, interlocking switch QF3 and QF4, switch QF5, by-pass switch KM1 and output transformer T；Railway power conditioner of the present invention is applied to electric railway traction 27.5kV to railway power 10kV conversion arts, and by interlocking switch QF1 and QF2, by-pass switch KM1, bidirectional triode thyristor, interlocking switch QF3 and QF4, switch the disconnection and closure control of QF5, realize autologous grid-connected, autologous off-network, lonely source port, lonely source current limliting filter function, greatly improve the feature of power line cleaner, utilization ratio and reliability, and the railway power conditioner is with simple in structure, it is ingenious, it is easily achieved, the advantages such as cost of implementation is low, be conducive to popularization and application.
Description
Technical field
The invention belongs to electric railway technical field, more particularly to a kind of electric railway 27.5kV that is applied to is to railway
The multifunctional railway power conditioner of electric power 10kV conversion.
Background technology
It is recently as state-owned railroads construction scale that rail traction 27.5kV carries out transformation of electrical energy to railway power 10kV
During continuous enlargement and national defence increase railway construction demand, a kind of new electric energy gradually proposed becomes replacing equipment.Due to
Railway by Qinghai, Tibet, Inner Mongol, Xinjiang when area, often by the tens even depopulated zone of hundreds of kilometer, electricity in depopulated zone
The gasify signal of Along Railway, scheduling, station power supply etc. can not be protected.Therefore the electricity from traction 27.5kV to railway is proposed
The current demand that power 10kV is converted.
It is conventional to realize railway power power supply in guarantee non-Electric region using from electric region to non-Electric region by long distance power transmission
Measure, long distance power transmission there are cost of investment is big, O＆M cost is high, there are overvoltage and power supply economics it is poor the problems such as.It is and straight
The method converted using transformer from 27.5kV to 10kV is connect, due to being subject to railway locomotive impact and nonlinear shadow
Ring, 10kV sides voltage has the problem of fluctuation is fast, aberration rate is high, and low-voltage load is unable to the feelings that reliability service even burns load
Condition.Therefore, using converters technology, 27.5kV sides is converted, are isolated and control is gradually to send out in recent years
The new technique that exhibition is got up, but the transformation topology function of general type is single, is only capable of being embodied as the function of load power supply, and one
Denier power electronic devices is damaged, and whole device will be shut down, and utilization rate is low.To sum up, a kind of converters type is proposed
Multifunctional converter, can realize 27.5kV to the transformation of electrical energy of 10kV and realize multiple functions, improve the overall profit of device
It is a kind of demand for having very much realistic meaning with rate.
The content of the invention
To solve the above-mentioned problems in the prior art, the present invention provides one kind both to have realized railway 27.5kV to iron
The electric energy conversion of road electric power 10kV, and can realize autologous grid-connected, autologous off-network, lonely source port, lonely source current limliting filter function, significantly
Feature, utilization ratio and the reliability of power line cleaner are improved, and it is simple in structure, ingenious, it is easy to accomplish, cost of implementation
It is low, be conducive to the railway power conditioner of popularization and application.
In order to solve the above technical problems, the present invention adopts the following technical scheme that：
A kind of multifunctional railway power conditioner, includes multiwinding transformer, cascade multilevel converter, interlocking switch
QF1 and QF2, wave filter, bidirectional triode thyristor, interlocking switch QF3 and QF4, switch QF5, by-pass switch KM1 and output transformer T；
Wherein, the multiwinding transformer access traction side bridge arm, and its multichannel low-voltage output mouth is connected to cascade connection multi-level conversion
Device；The output terminal connection interlocking switch QF1 of the cascade multilevel converter, the output terminal of the interlocking switch QF1 are connected to
Wave filter, the output terminal of the wave filter are connected by switching QF5 with output transformer T, the output terminal of the output transformer T
The output terminal for being connected with interlocking switch QF4, the interlocking switch QF4 is connected to other circuits or load, supply 10kV voltages；Institute
The High voltage output port for stating multiwinding transformer is connected by interlocking switch QF2 with the output terminal of interlocking switch QF1, at the same more around
The High voltage output port of group transformer is connected by by-pass switch KM1 and bidirectional triode thyristor with the output port of wave filter, is bypassed
Switch KM1 is connected with the tie point of bidirectional triode thyristor by interlocking switch QF3 with the output terminal of interlocking switch QF4；
When interlocking switch QF1 closures, interlocking switch QF2 is disconnected, by-pass switch KM1 closures, bidirectional triode thyristor turn off, interlocking
When switching QF3 and QF4 closures, switch QF5 closures, which forms the topology connection structure of autologous grid-connected function,
Cascade multilevel converter, interlocking switch QF1, wave filter, interlocking switch QF4 and switch QF5 and to multiwinding transformer at this time
High pressure port port1, by-pass switch KM1, the 10kV voltages of interlocking switch QF3 outputs, and to the high pressure of multiwinding transformer
The load conveying active power of port port1, the reactive power of the high pressure port port1 to flowing into multiwinding transformer, harmonic wave
Electric current carries out power quality controlling；
When interlocking switch QF1 closures, interlocking switch QF2 is disconnected, by-pass switch KM1 is disconnected, bidirectional triode thyristor turns off, interlocking
When switching QF3 disconnections, interlocking switch QF4 closures, switch QF5 closures, which forms opening up for autologous off-network function
Connection structure is flutterred, multiwinding transformer, cascade multilevel converter, wave filter, output transformer provide 10kV to load at this time
Voltage；
When interlocking switch QF1 and QF2 are disconnected, by-pass switch KM1 closures, bidirectional triode thyristor turn off, interlocking switch QF3 is closed
When conjunction, interlocking switch QF4 disconnect, switch QF5 is disconnected, which forms the Topology connection knot of lonely source port function
Structure, at this time the high pressure port port1 of multiwinding transformer to load side provide 10kV power supplys；
When interlocking switch QF1 is disconnected, interlocking switch QF2 closures, by-pass switch KM1 are disconnected, bidirectional triode thyristor closes, interlocking
When switching QF3 closures, interlocking switch QF4 disconnections, switch QF5 disconnections, which forms Gu Yuan filtering current-limiting functions
Topology connection structure, at this time the high pressure port port1 of multiwinding transformer by wave filter to load provide 10kV voltages, together
When wave filter form single tuned filter and filter out load side harmonic wave and part reactive power is provided, if wave filter when load side is short-circuit
L play suppress load short circuit current flow function.
Further, the cascade multilevel converter is AC-DC-AC type cascade multilevel converters, by multiple AC-
DC-AC types power cell is composed using cascade chain structure.
Further, the input side of each AC-DC-AC types power cell is rectification circuit, and centre is the flat ripple of energy storage
Capacitance, export has by-pass switch for inverter circuit, inverter circuit output.
Further, the output filter is LCR wave filters, its LCR parts are by switching QF5 and output transformer T
Connection, collectively forms LCR-T type output filters；The High voltage output port of the multiwinding transformer passes through by-pass switch KM1
It is connected with bidirectional triode thyristor with the LCR output ports of LCR-T type output filters.
The beneficial effects of the invention are as follows：
The present invention is through the above technical solutions, autologous grid-connected, autologous off-network, lonely source port, lonely source current limliting can be realized
Filter function, greatly improves the feature, utilization ratio and reliability of power line cleaner, and the railway power conditioner has
It is simple in structure, ingenious, it is easy to accomplish, the advantages such as cost of implementation is low, are conducive to popularization and application.
Brief description of the drawings
Fig. 1 is the structure diagram of multifunctional railway power conditioner embodiment of the present invention；
Fig. 2 is the structure diagram of power cell in multifunctional railway power conditioner embodiment of the present invention；
Fig. 3 is structural representation when multifunctional railway power conditioner embodiment of the present invention realizes autologous grid-connected function
Figure；
Structure diagram when Fig. 4 is multifunctional railway power conditioner embodiment of the present invention autologous off-network function；
Structure diagram when Fig. 5 is multifunctional railway power conditioner embodiment orphan's source port function of the present invention；
Structural representation when Fig. 6 is multifunctional railway power conditioner embodiment orphan source current limliting filter function of the present invention
Figure；
Fig. 7 is that multifunctional railway power conditioner embodiment of the present invention applies the structure in existing station upgrading to show
It is intended to.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, it is right
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only to explain the present invention, not
For limiting the present invention.
As shown in Figures 1 to 7：
Multifunctional railway power conditioner described in the embodiment of the present invention, includes multiwinding transformer, cascade connection multi-level becomes
Parallel operation, interlocking switch QF1 and QF2, wave filter, bidirectional triode thyristor, interlocking switch QF3 and QF4, switch QF5, by-pass switch KM1
With output transformer T.The multiwinding transformer accesses traction side bridge arm, and to be connected to cascade more for its multichannel low-voltage output mouth
Level converter；The output terminal connection interlocking switch QF1 of the cascade multilevel converter, the output of the interlocking switch QF1
End is connected to wave filter；The output terminal of the wave filter is connected by switching QF5 with output transformer T, the output transformer T
Output terminal be connected with the output terminal of interlocking switch QF4, the interlocking switch QF4 and be connected to other circuits or load, supply
10kV voltages；The output terminal phase that the High voltage output port of the multiwinding transformer passes through interlocking switch QF2 and interlocking switch QF1
Even, while the High voltage output port of multiwinding transformer passes through by-pass switch KM1 and the output terminal of bidirectional triode thyristor and wave filter
Mouth is connected, and the tie point of by-pass switch KM1 and bidirectional triode thyristor passes through the output terminal phase of interlocking switch QF3 and interlocking switch QF4
Even.Wherein, the cascade multilevel converter can be AC-DC-AC type cascade multilevel converters, by multiple AC-DC-AC types
Power cell is composed (such as Fig. 1) using cascade chain structure, and the input side of each AC-DC-AC type power cells is
Rectification circuit, centre is energy storage flat wave capacitor, is exported as inverter circuit, and inverter circuit output has by-pass switch, such as Fig. 2 institutes
Show；The wave filter can be LCR wave filters, its LCR parts are connected with output transformer T by switching QF5, collectively formed
LCR-T type output filters；The High voltage output port of the multiwinding transformer by by-pass switch KM1 and bidirectional triode thyristor with
The LCR output ports of LCR-T type output filters are connected.
Such as Fig. 3, when interlocking switch QF1 closures, interlocking switch QF2 is disconnected, by-pass switch KM1 closures, bidirectional triode thyristor close
When disconnected, interlocking switch QF3 and QF4 closure, switch QF5 closures, which forms the topology of autologous grid-connected function even
Binding structure, at this time cascade multilevel converter, interlocking switch QF1, wave filter, interlocking switch QF4 and switch QF5 and to Multiple coil
The high pressure port port1 of transformer, by-pass switch KM1, the 10kV voltages of interlocking switch QF3 outputs, and to multiwinding transformer
High pressure port port1 load conveying active power, to flow into multiwinding transformer high pressure port port1 idle work(
Rate, harmonic current carry out power quality controlling.
Such as Fig. 4, when interlocking switch QF1 closures, interlocking switch QF2 is disconnected, by-pass switch KM1 is disconnected, bidirectional triode thyristor closes
When disconnected, interlocking switch QF3 is disconnected, interlocking switch QF4 closures, switch QF5 are closed, which forms autologous off-network work(
Can topology connection structure, multiwinding transformer, cascade multilevel converter, wave filter, output transformer (i.e. LCR-T at this time
Type output filter) to load provide 10kV voltages.
Such as Fig. 5, when interlocking switch QF1 and QF2 disconnection, by-pass switch KM1 is closed, bidirectional triode thyristor turns off, interlocking switch
When QF3 closures, interlocking switch QF4 are disconnected, switch QF5 is disconnected, which forms the topology of lonely source port function even
Binding structure, at this time the high pressure port port1 of multiwinding transformer to load side provide 10kV power supplys.
Such as Fig. 6, when interlocking switch QF1 disconnections, interlocking switch QF2 closures, by-pass switch KM1 is disconnected, bidirectional triode thyristor closes
When conjunction, interlocking switch QF3 closures, interlocking switch QF4 are disconnected, are switched QF5 disconnections, railway power conditioner formation Gu Yuan filtering limits
Flow function topology connection structure, at this time the high pressure port port1 of multiwinding transformer by wave filter (i.e. LCR wave filters) to
Load provides 10kV voltages, while wave filter (i.e. LCR wave filters) forms single tuned filter and filters out load side harmonic wave and provide
Part reactive power, if the L of wave filter plays the function of suppressing load short circuit current flow when load side is short-circuit.
In this way, railway power conditioner of the present invention is applied to electric railway traction 27.5kV to railway power 10kV
Conversion art, you can realize autologous grid-connected, autologous off-network, lonely source port, lonely source current limliting filter function, greatly improve purifying electric
Feature, utilization ratio and the reliability of source device, and the railway power conditioner is with simple in structure, ingenious, it is easy to accomplish,
The advantages such as cost of implementation is low, are conducive to popularization and application, being included in newly-built station and existing station can be implemented according to such scheme, together
When it is standing in station in existing station transformation use 55/10kV power transformers, can be exported in power transformer and carry out existing station and change
Make, certainly also can be as shown in fig. 7, being changed to 10kV three-phase inputs to the input side of power conditioner in the design phase, other conditions are not
Become, power conditioner can obtain second set of application scheme.
The above is the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also considered as
Protection scope of the present invention.
Claims (4)
- A kind of 1. multifunctional railway power conditioner, it is characterised in that：Include multiwinding transformer, cascade multilevel converter, Interlocking switch QF1 and QF2, wave filter, bidirectional triode thyristor, interlocking switch QF3 and QF4, switch QF5, by-pass switch KM1 and output Transformer T；Wherein, multiwinding transformer access traction side bridge arm, and to be connected to cascade more for its multichannel low-voltage output mouth Level converter；The output terminal connection interlocking switch QF1 of the cascade multilevel converter, the output of the interlocking switch QF1 End is connected to wave filter, and the output terminal of the wave filter is connected by switching QF5 with output transformer T, the output transformer T Output terminal be connected with the output terminal of interlocking switch QF4, the interlocking switch QF4 and be connected to other circuits or load, supply 10kV voltages；The High voltage output port port1 of the multiwinding transformer is defeated by interlocking switch QF2 and interlocking switch QF1's Outlet is connected, while the High voltage output port of multiwinding transformer passes through by-pass switch KM1 and bidirectional triode thyristor and wave filter Output terminal is connected, and the tie point of by-pass switch KM1 and bidirectional triode thyristor passes through the output of interlocking switch QF3 and interlocking switch QF4 End is connected；When interlocking switch QF1 closures, interlocking switch QF2 is disconnected, by-pass switch KM1 closures, bidirectional triode thyristor turn off, interlocking switch When QF3 and QF4 closures, switch QF5 closures, which forms the topology connection structure of autologous grid-connected function, at this time Cascade multilevel converter, interlocking switch QF1, wave filter, interlocking switch QF4 and switch QF5 and to the height of multiwinding transformer Pressure side mouth port1, by-pass switch KM1, the 10kV voltages of interlocking switch QF3 outputs, and to the high pressure port of multiwinding transformer The load conveying active power of port1, the reactive power of the high pressure port port1 to flowing into multiwinding transformer, harmonic current Carry out power quality controlling；When interlocking switch QF1 closures, interlocking switch QF2 is disconnected, by-pass switch KM1 is disconnected, bidirectional triode thyristor turns off, interlocking switch When QF3 is disconnected, interlocking switch QF4 closures, switch QF5 are closed, which forms the topology of autologous off-network function even Binding structure, multiwinding transformer, cascade multilevel converter, wave filter, output transformer provide 10kV voltages to load at this time；When interlocking switch QF1 and QF2 are disconnected, by-pass switch KM1 closures, bidirectional triode thyristor turn off, interlocking switch QF3 closures, connection When lock-switch QF4 is disconnected, switch QF5 is disconnected, which forms the topology connection structure of lonely source port function, at this time The high pressure port port1 of multiwinding transformer provides 10kV power supplys to load side；When interlocking switch QF1 is disconnected, interlocking switch QF2 closures, by-pass switch KM1 are disconnected, bidirectional triode thyristor closure, interlocking switch When QF3 closures, interlocking switch QF4 are disconnected, switch QF5 is disconnected, which forms opening up for Gu Yuan filtering current-limiting functions Connection structure is flutterred, the high pressure port port1 of multiwinding transformer provides 10kV voltages by wave filter to load at this time, filters at the same time Ripple device forms single tuned filter and filters out load side harmonic wave and provide part reactive power, if when load side is short-circuit wave filter L Play the function of suppressing load short circuit current flow.
- 2. multifunctional railway power conditioner according to claim 1, it is characterised in that：The cascade multilevel converter is AC-DC-AC type cascade multilevel converters, are composed of multiple AC-DC-AC types power cells using cascade chain structure.
- 3. multifunctional railway power conditioner according to claim 2, it is characterised in that：Each AC-DC-AC types power list The input side of member is rectification circuit, and centre is energy storage flat wave capacitor, and export has bypass to open for inverter circuit, inverter circuit output Close.
- 4. according to the 1 or 2 or 3 multifunctional railway power conditioner of claim, it is characterised in that：The wave filter is LCR filters Ripple device, its LCR parts are connected by switching QF5 with output transformer T, collectively form LCR-T type output filters；It is described it is more around The High voltage output port of group transformer is exported by the LCR of by-pass switch KM1 and bidirectional triode thyristor and LCR-T type output filters Port is connected.
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| CN201711215845.2A CN107947597A (en) | 2017-11-28 | 2017-11-28 | A kind of multifunctional railway power conditioner |
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| CN201711215845.2A CN107947597A (en) | 2017-11-28 | 2017-11-28 | A kind of multifunctional railway power conditioner |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110611330A (en) * | 2019-10-12 | 2019-12-24 | 珠海万力达电气自动化有限公司 | Hybrid multifunctional railway purifying power supply with expandable capacity and cooperative control method |
| CN110768223A (en) * | 2019-11-26 | 2020-02-07 | 珠海万力达电气自动化有限公司 | Control method for weakening bus inrush current of railway purification power supply device |
| CN111049142A (en) * | 2019-11-27 | 2020-04-21 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Dynamic compensation type railway purifying power supply device |
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| CN201682288U (en) * | 2010-03-18 | 2010-12-22 | 山东容力达矿用电器设备有限公司 | Mining explosion-proof type dynamic reactive power compensation and harmonic treatment device |
| CN104022630A (en) * | 2014-04-29 | 2014-09-03 | 株洲变流技术国家工程研究中心有限公司 | Multifunctional hybrid traction power supply system and control method |
| CN206041817U (en) * | 2016-09-18 | 2017-03-22 | 珠海万力达电气自动化有限公司 | Railway purifies power supply unit |
| CN106972505A (en) * | 2017-05-05 | 2017-07-21 | 贵州电网有限责任公司电力科学研究院 | The hybrid power electronic transformer and its control method of unified power quality controlling |
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| CN201682288U (en) * | 2010-03-18 | 2010-12-22 | 山东容力达矿用电器设备有限公司 | Mining explosion-proof type dynamic reactive power compensation and harmonic treatment device |
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| CN110611330A (en) * | 2019-10-12 | 2019-12-24 | 珠海万力达电气自动化有限公司 | Hybrid multifunctional railway purifying power supply with expandable capacity and cooperative control method |
| CN110611330B (en) * | 2019-10-12 | 2023-05-23 | 珠海万力达电气自动化有限公司 | Multifunctional railway purifying power supply with mixed expandable capacity and cooperative control method |
| CN110768223A (en) * | 2019-11-26 | 2020-02-07 | 珠海万力达电气自动化有限公司 | Control method for weakening bus inrush current of railway purification power supply device |
| CN111049142A (en) * | 2019-11-27 | 2020-04-21 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Dynamic compensation type railway purifying power supply device |
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Application publication date: 20180420 |