CN108718095A - A kind of electric railway energy router based on 81 level of Mixed cascading - Google Patents

A kind of electric railway energy router based on 81 level of Mixed cascading Download PDF

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Publication number
CN108718095A
CN108718095A CN201810429912.9A CN201810429912A CN108718095A CN 108718095 A CN108718095 A CN 108718095A CN 201810429912 A CN201810429912 A CN 201810429912A CN 108718095 A CN108718095 A CN 108718095A
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China
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pin
converter
conducting wire
phase transformer
parallel operations
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张长征
王琪
舒泳皓
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Hubei University of Technology
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Hubei University of Technology
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Priority to CN201810429912.9A priority Critical patent/CN108718095A/en
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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00Circuit arrangements for ac mains or ac distribution networks
    • H02J3/28Arrangements for balancing of the load in a network by storage of energy
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00Circuit arrangements for ac mains or ac distribution networks
    • H02J3/38Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H02J3/46Controlling of the sharing of output between the generators, converters, or transformers
    • H02J3/48Controlling the sharing of the in-phase component
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00Circuit arrangements for ac mains or ac distribution networks
    • H02J3/38Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H02J3/46Controlling of the sharing of output between the generators, converters, or transformers
    • H02J3/50Controlling the sharing of the out-of-phase component

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dc-Dc Converters (AREA)

Abstract

The invention discloses a kind of electric railway energy routers based on 81 level of Mixed cascading.The present invention includes multiple distributed generation resource DC to DC converter (DGDC1‑DGDCM), multiple distributed generation resources exchange turn DC converter (DGAC1‑DGACN), multiple distributed energy storage DC to DC converter (ESDC1‑ESDCK), multiple distributed energy storages exchange turn DC converter (ESAC1‑ESACL), DC bus capacitance (C), four H bridging parallel operations (H1、H2、H3、H4) and four single-phase transformer (T1、T2、T3、T4).Distributed generation resource DC to DC converter and exchange turn DC converter for distributed generation resource MPPT maximum power point tracking control and boosting rectifier control, distributed energy storage DC to DC converter and exchange turn DC converter for the control of DC bus-bar voltage and the control of power flow, DC bus capacitance is used for the support of DC bus-bar voltage, and four H bridgings parallel operations and four single-phase transformers constitute 81 level converter of Mixed cascading.Compared with prior art, invention has the advantages of high efficiency, at low cost.

Description

A kind of electric railway energy router based on 81 level of Mixed cascading
Technical field
The invention belongs to the technical fields of electrified railway traction networks power supply system, and in particular to one kind being based on Mixed cascading The electric railway energy router of 81 level.
Background technology
Since electric railway comes out, rely on its high efficiency and its feature of environmental protection, is increasingly becoming national current rail hair The important directions of exhibition.But the single phase industrial frequence ac electrified railway traction load in China has the features such as mutation, non-linear so that It is also not quite similar to the power supply capacity of power supply and the demand of power quality.Current common problem can lead to system Power factor declines, due to needing the normal operation of holding system, thus it is higher to the idle demand of Traction networks, and it is compensating reactive power The technical performance of the device increased even more directly influences the rate of economic development of electric railway;Meanwhile it is current electrified Railway locomotive is susceptible to the nervous situation of Traction networks energy supply, so being currently badly in need of one since required active power is different Kind can provide active and compensating reactive power energy device.
The current mode for improving electric railway power factor is broadly divided into two kinds:One is development of new locomotives, with this Increase the power factor of locomotive;Secondly it can be controlled by the Reactive-power control to whole system, power factor is made to be promoted.But the first Scheme also fails to effectively develop the locomotive that power factor reaches requirement due to current technical reason and bankroll problem, so Second scheme is generally used to increase the power factor of system at present.Present reactive power compensator common in this field is main For switch on-off capacitor group or use thyristor-controlled reactor, but the first scheme it is possible that overvoltage phenomenon and lure Safety accident is sent out, and the problems such as second scheme is expensive, and there is also floor space is excessive, and harmonic content is big.In wattful power In terms of rate, there is data to show, reactive-load compensation and energy supply, but work(can effectively be solved the problems, such as by increasing locomotive additional feed power supply Rate requirement is excessive, and power quality is more demanding, and expensive all develop to it plays limitation.So from current electric railway Development from the point of view of, energy saving, under the premise of reducing cost, release a kind of energy that can realize power supply and load matched operation It is imperative to establish one high power quality electric railway system for device.
Invention content
For overcome the deficiencies in the prior art, the present invention proposes a kind of electric railway based on 81 level of Mixed cascading Energy router.
The technical scheme is that a kind of electric railway energy router based on 81 level of Mixed cascading, feature It is, including:First distributed generation resource DC to DC converter (DGDC1) ..., M distributed generation resource DC to DC become Parallel operation (DGDCM), the exchange of the first distributed generation resource turns DC converter (DGAC1) ..., N distributed generation resources exchange turn direct current Converter (DGACN), the first distributed energy storage DC to DC converter (ESDC1) ..., K distributed energy storage direct currents turn straight Current converter (ESACK), the exchange of the first distributed energy storage turns DC converter (ESAC1) ..., L distributed energy storages exchange turn DC converter (ESACL), DC bus capacitance (C), the first H bridging parallel operations (H1), the 2nd H bridging parallel operations (H2), the 3rd H Bridging parallel operation (H3), the 4th H bridging parallel operations (H4), the first single-phase transformer (T1), the second single-phase transformer (T2), third is single-phase Transformer (T3), the 4th single-phase transformer (T4), M >=1, N >=1, K >=1, L >=1, and M, N, K and L are positive integer;
The first distributed generation resource DC to DC converter (DGDC1) straight to the M distributed generation resource direct currents turn Current converter (DGDCM) in, the i-th distributed generation resource DC to DC converter (DGDCi) third pin (di,3) and institute The cathode (-) for stating DC bus capacitance (C) is connected by conducting wire, the i-th distributed generation resource DC to DC converter (DGDCi) the 4th pin (di,4) connect by conducting wire with the anode (+) of the DC bus capacitance (C), i is positive integer, And i ∈ [1, M];
The first distributed generation resource exchange turns DC converter (DGAC1) straight to N distributed generation resources exchange turn Current converter (DGACN) in, the jth distributed generation resource exchange turns DC converter (DGACj) third pin (gj,3) and institute The cathode (-) for stating DC bus capacitance (C) is connected by conducting wire, and the jth distributed generation resource exchange turns DC converter (DGACj) the 4th pin (gj,4) connect by conducting wire with the anode (+) of the DC bus capacitance (C), j is positive integer, And j ∈ [1, N];
The first distributed energy storage DC to DC converter (ESDC1) straight to the K distributed energy storage direct currents turn Current converter (ESDCK) in, the pth distributed energy storage DC to DC converter (ESDCp) third pin (ep,3) and institute The cathode (-) for stating DC bus capacitance (C) is connected by conducting wire, the pth distributed energy storage DC to DC converter (ESDCp) the 4th pin (ei,4) connect by conducting wire with the anode (+) of the DC bus capacitance (C), p is positive integer, And p ∈ [1, K];
The first distributed energy storage exchange turns DC converter (ESAC1) straight to L distributed energy storages exchange turn Current converter (ESACL) in, the q distributed energy storages exchange turns DC converter (ESACq) third pin (sq,3) and institute The cathode (-) for stating DC bus capacitance (C) is connected by conducting wire, and the q distributed energy storages exchange turns DC converter (ESACq) the 4th pin (sq,4) connect by conducting wire with the anode (+) of the DC bus capacitance (C), q is positive integer, And q ∈ [1, L];
The anode (+) of the DC bus capacitance (C) and the first H bridging parallel operations (H1) the first pin (h1,1) It is connected by conducting wire;The anode (+) of the DC bus capacitance (C) and the 2nd H bridging parallel operations (H2) the first pin (h2,1) connected by conducting wire;The anode (+) of the DC bus capacitance (C) and the 3rd H bridging parallel operations (H3) first Pin (h3,1) connected by conducting wire;The anode (+) of the DC bus capacitance (C) and the 4th H bridging parallel operations (H4) First pin (h4,1) connected by conducting wire;
The cathode (-) of the DC bus capacitance (C) and the first H bridging parallel operations (H1) second pin (h1,2) It is connected by conducting wire;The cathode (-) of the DC bus capacitance (C) and the 2nd H bridging parallel operations (H2) second pin (h2,2) connected by conducting wire;The cathode (-) of the DC bus capacitance (C) and the 3rd H bridging parallel operations (H3) second Pin (h3,2) connected by conducting wire;The cathode (-) of the DC bus capacitance (C) and the 4th H bridging parallel operations (H4) Second pin (h4,2) connected by conducting wire;
The first H bridging parallel operations (H1) third pin (h1,3) and the first single-phase transformer (T1) second pin (t1,2) connected by conducting wire;The first H bridging parallel operations (H1) the 4th pin (h1,4) and the first single-phase transformer (T1) The first pin (t1,1) connected by conducting wire;
The 2nd H bridging parallel operations (H2) third pin (h2,3) and the second single-phase transformer (T2) second pin (t2,2) connected by conducting wire;The 2nd H bridging parallel operations (H2) the 4th pin (h2,4) and the second single-phase transformer (T2) The first pin (t2,1) connected by conducting wire;
The 3rd H bridging parallel operations (H3) third pin (h3,3) and the third single-phase transformer (T3) second pin (t3,2) connected by conducting wire;The 3rd H bridging parallel operations (H3) the 4th pin (h3,4) and the third single-phase transformer (T3) The first pin (t3,1) connected by conducting wire;
The 4th H bridging parallel operations (H4) third pin (h4,3) and the 4th single-phase transformer (T4) second pin (t4,2) connected by conducting wire;The 4th H bridging parallel operations (H4) the 4th pin (h4,4) and the 4th single-phase transformer (T4) The first pin (t4,1) connected by conducting wire;
First single-phase transformer (the T1) third pin (t1,3) and the second single-phase transformer (T2) the 4th draw Foot (t2,4) connected by conducting wire;Second single-phase transformer (the T2) third pin (t2,3) and the third single-phase transformer (T3) the 4th pin (t3,4) connected by conducting wire;Third single-phase transformer (the T3) third pin (t3,3) with described the Four single-phase transformer (T4) the 4th pin (t4,4) connected by conducting wire;First single-phase transformer (the T1) the 4th pin (t1,4) and the 4th single-phase transformer (T4) third pin (t4,3) it is used as 81 level voltage output interfaces.
Preferably, described point of the first distributed generation resource DC to DC converter (DGDC1) extremely M distributions Formula power supply DC to DC converter (DGDCM) it is used for distributed generation resource MPPT maximum power point tracking control and boost function;It is described The exchange of first distributed generation resource turns DC converter (DGAC1) to the N distributed generation resources exchange turn DC converter (DGACN) it is used for distributed generation resource MPPT maximum power point tracking control and boost function;The first distributed energy storage direct current turns straight Current converter (ESDC1) the extremely K distributed energy storages DC to DC converter (ESDCK) it is used for the control of DC bus-bar voltage The multidirectional flowing of system, energy and the control of power flow;The first distributed energy storage exchange turns DC converter (ESAC1) to institute It states the exchange of L distributed energy storages and turns DC converter (ESACL) for the control of DC bus-bar voltage, the multidirectional flowing of energy and The control of power flow;The DC bus capacitance (C) is for the support of DC bus-bar voltage and the power decoupled of alternating current-direct current;Institute The first H bridging parallel operations (H stated1), the 2nd H bridging parallel operations (H2), the 3rd H bridging parallel operations (H3), the 4th H bridging parallel operations (H4), One single-phase transformer (T1), the second single-phase transformer (T2), third single-phase transformer (T3), the 4th single-phase transformer (T4) constitute 81 level converter of Mixed cascading is for generating ideal 81 level voltage waveform and power optimization scheduling.
Compared with prior art, tool has the advantage that when the present invention is applied to electrified railway traction power supply system:It realizes Application of the renewable energy power generation in tractive power supply system;By controlling active realization peak load shifting, by controlling idle reality Existing supply conductor voltage support;Using the high pressure of 81 Level Technology of Mixed cascading realization grid-connection converter, large capacity, high efficiency, height Power quality, high reliability, low cost.
Description of the drawings
Fig. 1:Topology diagram of the present invention;
Fig. 2:Schematic diagram of the embodiment of the present invention;
Fig. 3:Control strategy schematic diagram of the present invention.
Specific implementation mode
Understand for the ease of those of ordinary skill in the art and implement the present invention, with reference to the accompanying drawings and embodiments to this hair It is bright to be described in further detail, it should be understood that implementation example described herein is merely to illustrate and explain the present invention, not For limiting the present invention.
In the embodiment of the present invention, respectively by taking a kind of concrete scheme as an example, i.e. distributed generation resource DC to DC converter Quantity is M=1;The quantity that distributed generation resource exchange turns DC converter is N=1;Distributed energy storage DC to DC converter Quantity be K=1;The quantity that distributed energy storage exchange turns DC converter is L=1;DC bus capacitance (C) uses capacity It is in parallel for the capacitance of 10 4700mF/1500v;First H bridging parallel operations (H1), the 2nd H bridging parallel operations (H2), the 3rd H bridging parallel operations (H3) it is all made of IGBT module, the 4th H bridging parallel operations (H4) use IGCT modules;First single-phase transformer (T1) the secondary side of original pound Number is than being 1:1;Second single-phase transformer (T2) the secondary side of original pound number than being 1:3;Third single-phase transformer (T3) the secondary side of original pound number Than being 1:9;4th single-phase transformer (T4) the secondary side of original pound number than being 1:27;Photovoltaic array and distributed generation resource DC to DC Converter (DGDC1) connected by conducting wire;Wind-driven generator is exchanged with distributed generation resource turns DC converter (DGAC1) by leading Line connects;Ultracapacitor and distributed energy storage DC to DC converter (ESDC1) connected by conducting wire;Flywheel accumulator with Distributed energy storage exchange turns DC converter (ESAC1) connected by conducting wire;First H bridging parallel operations (H1) corresponding to it is first single Phase transformer (T1) net side can generate three 960V, 0, -960V level;2nd H bridging parallel operations (H2) corresponding to it is second single-phase Transformer (T2) net side can generate three 2880V, 0, -2880V level;3rd H bridging parallel operations (H3) corresponding to third it is single-phase Transformer (T3) net side can generate three 8640V, 0, -8640V level;4th H bridging parallel operations (H4) corresponding to it is the 4th single-phase Transformer (T4) net side can generate three 25920V, 0, -25920V level;First single-phase transformer (T1), the second single-phase transformation Device (T2), third single-phase transformer (T3) and the 4th single-phase transformer (T4) be concatenated after will by modulation strategy appropriate 81 level and output voltage waveforms are generated close to 27.5kV sine waves.
The technical solution of the embodiment of the present invention is a kind of electric railway energy router based on 81 level of Mixed cascading. As shown in Figure 1, the present invention includes:First distributed generation resource DC to DC converter (DGDC1) ..., M distributed generation resources DC to DC converter (DGDCM), the exchange of the first distributed generation resource turns DC converter (DGAC1) ..., N distributed electricals Source exchange turns DC converter (DGACN), the first distributed energy storage DC to DC converter (ESDC1) ..., K it is distributed Energy storage DC to DC converter (ESACK), the exchange of the first distributed energy storage turns DC converter (ESAC1) ..., L distribution Formula energy storage exchange turns DC converter (ESACL), DC bus capacitance (C), the first H bridging parallel operations (H1), the 2nd H bridgings change Device (H2), the 3rd H bridging parallel operations (H3), the 4th H bridging parallel operations (H4), the first single-phase transformer (T1), the second single-phase transformer (T2), third single-phase transformer (T3), the 4th single-phase transformer (T4), M >=1, N >=1, K >=1, L >=1, and M, N, K and L are equal For positive integer;
The first distributed generation resource DC to DC converter (DGDC1) straight to the M distributed generation resource direct currents turn Current converter (DGDCM) in, the i-th distributed generation resource DC to DC converter (DGDCi) third pin (di,3) and institute The cathode (-) for stating DC bus capacitance (C) is connected by conducting wire, the i-th distributed generation resource DC to DC converter (DGDCi) the 4th pin (di,4) connect by conducting wire with the anode (+) of the DC bus capacitance (C), i is positive integer, And i ∈ [1, M];
The first distributed generation resource exchange turns DC converter (DGAC1) straight to N distributed generation resources exchange turn Current converter (DGACN) in, the jth distributed generation resource exchange turns DC converter (DGACj) third pin (gj,3) and institute The cathode (-) for stating DC bus capacitance (C) is connected by conducting wire, and the jth distributed generation resource exchange turns DC converter (DGACj) the 4th pin (gj,4) connect by conducting wire with the anode (+) of the DC bus capacitance (C), j is positive integer, And j ∈ [1, N];
The first distributed energy storage DC to DC converter (ESDC1) straight to the K distributed energy storage direct currents turn Current converter (ESDCK) in, the pth distributed energy storage DC to DC converter (ESDCp) third pin (ep,3) and institute The cathode (-) for stating DC bus capacitance (C) is connected by conducting wire, the pth distributed energy storage DC to DC converter (ESDCp) the 4th pin (ei,4) connect by conducting wire with the anode (+) of the DC bus capacitance (C), p is positive integer, And p ∈ [1, K];
The first distributed energy storage exchange turns DC converter (ESAC1) straight to L distributed energy storages exchange turn Current converter (ESACL) in, the q distributed energy storages exchange turns DC converter (ESACq) third pin (sq,3) and institute The cathode (-) for stating DC bus capacitance (C) is connected by conducting wire, and the q distributed energy storages exchange turns DC converter (ESACq) the 4th pin (sq,4) connect by conducting wire with the anode (+) of the DC bus capacitance (C), q is positive integer, And q ∈ [1, L];
The anode (+) of the DC bus capacitance (C) and the first H bridging parallel operations (H1) the first pin (h1,1) It is connected by conducting wire;The anode (+) of the DC bus capacitance (C) and the 2nd H bridging parallel operations (H2) the first pin (h2,1) connected by conducting wire;The anode (+) of the DC bus capacitance (C) and the 3rd H bridging parallel operations (H3) first Pin (h3,1) connected by conducting wire;The anode (+) of the DC bus capacitance (C) and the 4th H bridging parallel operations (H4) First pin (h4,1) connected by conducting wire;
The cathode (-) of the DC bus capacitance (C) and the first H bridging parallel operations (H1) second pin (h1,2) It is connected by conducting wire;The cathode (-) of the DC bus capacitance (C) and the 2nd H bridging parallel operations (H2) second pin (h2,2) connected by conducting wire;The cathode (-) of the DC bus capacitance (C) and the 3rd H bridging parallel operations (H3) second Pin (h3,2) connected by conducting wire;The cathode (-) of the DC bus capacitance (C) and the 4th H bridging parallel operations (H4) Second pin (h4,2) connected by conducting wire;
The first H bridging parallel operations (H1) third pin (h1,3) and the first single-phase transformer (T1) second pin (t1,2) connected by conducting wire;The first H bridging parallel operations (H1) the 4th pin (h1,4) and the first single-phase transformer (T1) The first pin (t1,1) connected by conducting wire;
The 2nd H bridging parallel operations (H2) third pin (h2,3) and the second single-phase transformer (T2) second pin (t2,2) connected by conducting wire;The 2nd H bridging parallel operations (H2) the 4th pin (h2,4) and the second single-phase transformer (T2) The first pin (t2,1) connected by conducting wire;
The 3rd H bridging parallel operations (H3) third pin (h3,3) and the third single-phase transformer (T3) second pin (t3,2) connected by conducting wire;The 3rd H bridging parallel operations (H3) the 4th pin (h3,4) and the third single-phase transformer (T3) The first pin (t3,1) connected by conducting wire;
The 4th H bridging parallel operations (H4) third pin (h4,3) and the 4th single-phase transformer (T4) second pin (t4,2) connected by conducting wire;The 4th H bridging parallel operations (H4) the 4th pin (h4,4) and the 4th single-phase transformer (T4) The first pin (t4,1) connected by conducting wire;
First single-phase transformer (the T1) third pin (t1,3) and the second single-phase transformer (T2) the 4th draw Foot (t2,4) connected by conducting wire;Second single-phase transformer (the T2) third pin (t2,3) and the third single-phase transformer (T3) the 4th pin (t3,4) connected by conducting wire;Third single-phase transformer (the T3) third pin (t3,3) with described the Four single-phase transformer (T4) the 4th pin (t4,4) connected by conducting wire;First single-phase transformer (the T1) the 4th pin (t1,4) and the 4th single-phase transformer (T4) third pin (t4,3) it is used as 81 level voltage output interfaces.
Described point of the first distributed generation resource DC to DC converter (DGDC1) straight to the M distributed generation resources Circulate DC converter (DGDCM) it is used for distributed generation resource MPPT maximum power point tracking control and boost function;First distribution Formula capable AC turns DC converter (DGAC1) to the N distributed generation resources exchange turn DC converter (DGACN) for dividing Cloth power supply MPPT maximum power point tracking control and boost function;The first distributed energy storage DC to DC converter (ESDC1) the extremely K distributed energy storages DC to DC converter (ESDCK) more for the control of DC bus-bar voltage, energy To flowing and the control of power flow;The first distributed energy storage exchange turns DC converter (ESAC1) extremely L distributions Formula energy storage exchange turns DC converter (ESACL) for the control of DC bus-bar voltage, the multidirectional flowing of energy and power flow Control;The DC bus capacitance (C) is for the support of DC bus-bar voltage and the power decoupled of alternating current-direct current;Described first H bridging parallel operations (H1), the 2nd H bridging parallel operations (H2), the 3rd H bridging parallel operations (H3), the 4th H bridging parallel operations (H4), the first single-phase change Depressor (T1), the second single-phase transformer (T2), third single-phase transformer (T3), the 4th single-phase transformer (T4) constitute Mixed cascading 81 level converters are for generating ideal 81 level voltage waveform and power optimization scheduling.
As shown in Fig. 2, being schematic diagram of the embodiment of the present invention, as shown in figure 3, being control strategy schematic diagram of the present invention.In conjunction with Fig. 2 and Fig. 3, is illustrated the present embodiment.
The embodiment of the present invention controls process:By the voltage U for adjusting DC bus capacitance (C) both endsdcIt is real Existing wattles power economic equivalent scheduling, the lock-out pulse angle α by adjusting 81 level converter of Mixed cascading realize active power Optimized Operation;When railway locomotive enters the station, by increasing UdcTo increase 81 level converter unit output voltage of Mixed cascading U81, make U81More than supply conductor voltage Uq, while adjusting lock-out pulse angle and make U81It is ahead of Uq, according to the reference direction and arrow of regulation The direction of voltage difference U is measured, the direction of 81 level converter unit output current I of Mixed cascading will be late by 90 degree of vector potential difference, The energy storage section to known to can be through energy storage DC to DC converter (ESDC1), the first distributed energy storage exchange turn DC converting Device (ESAC1) active power transfer is sent out to Traction networks, while 81 level converter of Mixed cascading sends out inductive reactive power and is transmitted to Traction networks, cooperation distributed generation resource, Traction networks provide energy needed for locomotive normal operation together;After railway locomotive is outbound, lead to Cross reduction UdcTo reduce U81, make U81Less than Uq, while adjusting lock-out pulse angle and make U81Lag behind Uq, according to the reference side of regulation To and U direction, the direction of I will be late by 90 degree of vector potential difference, so as to notify the useful work for making Traction networks send out can through point Cloth energy storage DC to DC converter (ESDC1), distributed energy storage exchange turn DC converter (ESAC1) it is transmitted to energy storage part Point, while 81 level converter of Mixed cascading sends out capacitive reactive power to Traction networks and carries out reactive-load compensation, realizes supply conductor voltage branch Support.
Although this specification has more used the first distributed generation resource DC to DC converter (DGDC1) ..., M Distributed generation resource DC to DC converter (DGDCM), the exchange of the first distributed generation resource turns DC converter (DGAC1) ..., The exchange of N distributed generation resources turns DC converter (DGACN), the first distributed energy storage DC to DC converter (ESDC1)、...、 K distributed energy storage DC to DC converters (ESACK), the exchange of the first distributed energy storage turns DC converter (ESAC1) ..., L distributed energy storages exchange turn DC converter (ESACL), DC bus capacitance (C), the first H bridgings change Device (H1), the 2nd H bridging parallel operations (H2), the 3rd H bridging parallel operations (H3), the 4th H bridging parallel operations (H4), the first single-phase transformer (T1), the second single-phase transformer (T2), third single-phase transformer (T3), the 4th single-phase transformer (T4) etc. terms, but be not precluded Use the possibility of other terms.The use of these items is only for more easily describing the essence of the present invention, they are solved Any two kinds additional limitations are interpreted into all to disagree with spirit of that invention.
It should be understood that the part that this specification does not elaborate belongs to the prior art.
It should be understood that the above-mentioned description for preferred embodiment is more detailed, can not therefore be considered to this The limitation of invention patent protection range, those skilled in the art under the inspiration of the present invention, are not departing from power of the present invention Profit requires under protected ambit, can also make replacement or deformation, each fall within protection scope of the present invention, this hair It is bright range is claimed to be determined by the appended claims.

Claims (2)

1. a kind of electric railway energy router based on 81 level of Mixed cascading, it is characterised in that:First distributed generation resource DC to DC converter (DGDC1) ..., M distributed generation resource DC to DC converters (DGDCM), the first distributed electrical Source exchange turns DC converter (DGAC1) ..., N distributed generation resources exchange turn DC converter (DGACN), first is distributed Energy storage DC to DC converter (ESDC1) ..., K distributed energy storage DC to DC converters (ESACK), the first distribution Formula energy storage exchange turns DC converter (ESAC1) ..., L distributed energy storages exchange turn DC converter (ESACL), direct current is female Line capacitor (C), the first H bridging parallel operations (H1), the 2nd H bridging parallel operations (H2), the 3rd H bridging parallel operations (H3), the 4th H bridgings change Device (H4), the first single-phase transformer (T1), the second single-phase transformer (T2), third single-phase transformer (T3), the 4th single-phase transformer (T4), M >=1, N >=1, K >=1, L >=1, and M, N, K and L are positive integer;
The first distributed generation resource DC to DC converter (DGDC1) extremely M distributed generation resource DC to DC transformation Device (DGDCM) in, the i-th distributed generation resource DC to DC converter (DGDCi) third pin (di,3) and the direct current The cathode (-) of bus capacitor (C) is connected by conducting wire, the i-th distributed generation resource DC to DC converter (DGDCi) 4th pin (di,4) connect by conducting wire with the anode (+) of the DC bus capacitance (C), i is positive integer, and i ∈ [1, M];The first distributed generation resource exchange turns DC converter (DGAC1) to the N distributed generation resources exchange turn DC converting Device (DGACN) in, the jth distributed generation resource exchange turns DC converter (DGACj) third pin (gj,3) and the direct current The cathode (-) of bus capacitor (C) is connected by conducting wire, and the jth distributed generation resource exchange turns DC converter (DGACj) 4th pin (gj,4) connect by conducting wire with the anode (+) of the DC bus capacitance (C), j is positive integer, and j ∈ [1, N];The first distributed energy storage DC to DC converter (ESDC1) extremely K distributed energy storage DC to DC transformation Device (ESDCK) in, the pth distributed energy storage DC to DC converter (ESDCp) third pin (ep,3) and the direct current The cathode (-) of bus capacitor (C) is connected by conducting wire, the pth distributed energy storage DC to DC converter (ESDCp) 4th pin (ei,4) connect by conducting wire with the anode (+) of the DC bus capacitance (C), p is positive integer, and p ∈ [1, K];The first distributed energy storage exchange turns DC converter (ESAC1) to the L distributed energy storages exchange turn DC converting Device (ESACL) in, the q distributed energy storages exchange turns DC converter (ESACq) third pin (sq,3) and the direct current The cathode (-) of bus capacitor (C) is connected by conducting wire, and the q distributed energy storages exchange turns DC converter (ESACq) 4th pin (sq,4) connect by conducting wire with the anode (+) of the DC bus capacitance (C), q is positive integer, and q ∈ [1, L];The anode (+) of the DC bus capacitance (C) and the first H bridging parallel operations (H1) the first pin (h1,1) by leading Line connects;The anode (+) of the DC bus capacitance (C) and the 2nd H bridging parallel operations (H2) the first pin (h2,1) logical Cross conducting wire connection;The anode (+) of the DC bus capacitance (C) and the 3rd H bridging parallel operations (H3) the first pin (h3,1) connected by conducting wire;The anode (+) of the DC bus capacitance (C) and the 4th H bridging parallel operations (H4) first Pin (h4,1) connected by conducting wire;The cathode (-) of the DC bus capacitance (C) and the first H bridging parallel operations (H1) Second pin (h1,2) connected by conducting wire;The cathode (-) of the DC bus capacitance (C) and the 2nd H bridging parallel operations (H2) second pin (h2,2) connected by conducting wire;The cathode (-) of the DC bus capacitance (C) and the 3rd H bridgings Parallel operation (H3) second pin (h3,2) connected by conducting wire;The cathode (-) of the DC bus capacitance (C) and the 4th H Bridging parallel operation (H4) second pin (h4,2) connected by conducting wire;The first H bridging parallel operations (H1) third pin (h1,3) with First single-phase transformer (the T1) second pin (t1,2) connected by conducting wire;The first H bridging parallel operations (H1) the 4th Pin (h1,4) and the first single-phase transformer (T1) the first pin (t1,1) connected by conducting wire;The 2nd H bridgings change Device (H2) third pin (h2,3) and the second single-phase transformer (T2) second pin (t2,2) connected by conducting wire;It is described 2nd H bridging parallel operations (H2) the 4th pin (h2,4) and the second single-phase transformer (T2) the first pin (t2,1) by leading Line connects;The 3rd H bridging parallel operations (H3) third pin (h3,3) and the third single-phase transformer (T3) second pin (t3,2) connected by conducting wire;The 3rd H bridging parallel operations (H3) the 4th pin (h3,4) and the third single-phase transformer (T3) The first pin (t3,1) connected by conducting wire;The 4th H bridging parallel operations (H4) third pin (h4,3) and the 4th list Phase transformer (T4) second pin (t4,2) connected by conducting wire;The 4th H bridging parallel operations (H4) the 4th pin (h4,4) with 4th single-phase transformer (the T4) the first pin (t4,1) connected by conducting wire;First single-phase transformer (the T1) third Pin (t1,3) and the second single-phase transformer (T2) the 4th pin (t2,4) connected by conducting wire;The second single-phase transformation Device (T2) third pin (t2,3) and the third single-phase transformer (T3) the 4th pin (t3,4) connected by conducting wire;It is described Third single-phase transformer (T3) third pin (t3,3) and the 4th single-phase transformer (T4) the 4th pin (t4,4) by leading Line connects;First single-phase transformer (the T1) the 4th pin (t1,4) and the 4th single-phase transformer (T4) third pin (t4,3) it is used as 81 level voltage output interfaces.
2. the electric railway energy router according to claim 1 based on 81 level of Mixed cascading, it is characterised in that: Described point of the first distributed generation resource DC to DC converter (DGDC1) to the M distributed generation resource DC to DC Converter (DGDCM) it is used for distributed generation resource MPPT maximum power point tracking control and boost function;First distributed generation resource is handed over Circulate DC converter (DGAC1) to the N distributed generation resources exchange turn DC converter (DGACN) it is used for distributed generation resource MPPT maximum power point tracking control and boost function;The first distributed energy storage DC to DC converter (ESDC1) described in K distributed energy storage DC to DC converters (ESDCK) it is used for control, the multidirectional flowing of energy and the work(of DC bus-bar voltage The control of rate stream;The first distributed energy storage exchange turns DC converter (ESAC1) extremely L distributed energy storages exchange turn DC converter (ESACL) for the control of DC bus-bar voltage, the multidirectional flowing of energy and the control of power flow;The direct current Bus capacitor (C) is for the support of DC bus-bar voltage and the power decoupled of alternating current-direct current;The first H bridging parallel operations (H1), the 2nd H bridging parallel operations (H2), the 3rd H bridging parallel operations (H3), the 4th H bridging parallel operations (H4), the first single-phase transformer (T1)、 Second single-phase transformer (T2), third single-phase transformer (T3), the 4th single-phase transformer (T4) constitute 81 level translation of Mixed cascading Device is for generating ideal 81 level voltage waveform and power optimization scheduling.
CN201810429912.9A 2018-05-08 2018-05-08 A kind of electric railway energy router based on 81 level of Mixed cascading Pending CN108718095A (en)

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