CN106411144A - Photovoltaic power generation-based railway traction power supply system - Google Patents
Photovoltaic power generation-based railway traction power supply system Download PDFInfo
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- CN106411144A CN106411144A CN201610989263.9A CN201610989263A CN106411144A CN 106411144 A CN106411144 A CN 106411144A CN 201610989263 A CN201610989263 A CN 201610989263A CN 106411144 A CN106411144 A CN 106411144A
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- power supply
- supply system
- tractive
- photovoltaic
- 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
- H02M5/02—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 without intermediate conversion into dc
- H02M5/04—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 without intermediate conversion into dc by static converters
- H02M5/10—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 without intermediate conversion into dc by static converters using transformers
- H02M5/14—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 without intermediate conversion into dc by static converters using transformers for conversion between circuits of different phase number
-
- 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
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
Abstract
The present invention discloses a photovoltaic power generation-based railway traction power supply system. The photovoltaic power generation-based railway traction power supply system comprises a photovoltaic power generation device, a photovoltaic inverter, a step-up transformer, a traction transformer and a traction power supply system; the electric energy output end of the photovoltaic power generation device is connected with the primary side port of the step-up transformer through the photovoltaic inverter; the secondary side port of the step-up transformer is connected with the traction power supply system; the traction power supply system is connected with the traction transformer connected to a power grid transmission line; and a V/V wiring type step-up transformer is adopted as the step-up transformer. According to the photovoltaic power generation-based railway traction power supply system of the present invention, a self-power generation, self-use and redundant electricity marketing power generation mode is adopted, and therefore, the normal operation of the traction power supply system can be ensured, and redundant electricity is consumed by a power grid. The photovoltaic power generation-based railway traction power supply system is simple in structure and low in investment cost.
Description
Technical field
The invention belongs to traction power supply technical field, more particularly to a kind of power supply based on the rail traction of photovoltaic generation is
System.
Background technology
Photovoltaic generation as a kind of new-generation mode originated for energy with solar energy, have cleaning, pollution-free, no make an uproar
Sound, scale can structure the features such as, be 21 century to substitute one of optimum selection that traditional fossil energy generates electricity.The solar energy resources of China
Rich reserves, solar energy year total radiation be more than 1050kW h/m2 area account for more than the 96% of area, therefore photovoltaic
Generate electricity, in China, there is good development prospect, the development of photovoltaic generation is subject to the support energetically of national policy.
Railway enterprises are in large scale, have the basic feature of point more than long lines, have substantial amounts of station house, storehouse, real estate
Deng, if these facilities are farthest used, Devoting Major Efforts To Developing distributed photovoltaic power generation project, you can save substantial amounts of
Electric cost, can take the generating subsidy that country gives again.Photovoltaic plant access railway traction power supply system is had and once throws
Enter, long term benefit, the feature of energy-conserving and environment-protective, there is good development prospect.
Railway traction power supply system is that a kind of electric energy sending power system is changed into the electric energy being applied to electric propulsion,
Then it is delivered to the contact net of downline overhead erection respectively, the electric power system of electric energy needed for providing for electric locomotive load.
The railway traction power supply system of China adopts single phase industrial frequence 25kV or 55kV AC system, main power supply mode have direct power supply,
Direct power supply with return wire, BT are powered, AT powers and coaxial power cable power supply etc..
In the range of examined domestic and international open source literature, though photovoltaic power generation technology is current study hotspot, its research
It is concentrated mainly on the grid-connected aspect of exchange, rarely have document report photovoltaic plant to access railway traction power supply system.Existing at present this
Class power supply plan, needs a fairly large number of inverter, transformator, and photovoltaic generation is directly accessed contact net and traction may be supplied simultaneously
The protection of electric system has a negative impact；Furthermore, it is desirable to larger photovoltaic plant capacity and the investment of more primary equipment；Here
In class system, realize energy storage function frequently with accumulator, but accumulator exists, and charge-discharge electric power is limited, short the asking of cycle life
Topic, in the face of rail traction load is high-power, intermittent feature, economy is not high.
Content of the invention
In order to solve the above problems, the present invention proposes a kind of railway traction power supply system based on photovoltaic generation, adopts
Generate power for their own use, remaining electricity online forms of electricity generation, ensure tractive power supply system normal operation while, by electrical network consumption's surplus
Electricity, and structure is simple, cost of investment is low.
For reaching above-mentioned purpose, the technical solution used in the present invention is：
A kind of railway traction power supply system based on photovoltaic generation, including photovoltaic power generation apparatus, photovoltaic DC-to-AC converter, rises buckling
Depressor, tractive transformer and tractive power supply system；
Described photovoltaic power generation apparatus electric energy output end connects through photovoltaic DC-to-AC converter to side ports of booster transformer,
The secondary port of described booster transformer connects to tractive power supply system, described tractive power supply system is also associated with connect extremely
The tractive transformer of grid power transmission circuit；
Wherein, described booster transformer adopts V/V wiring booster transformer, so that the electric pressure of threephase AC electric energy reaches
Electric pressure needed for railway traction power supply system.V/V wiring booster transformer connection type is simple, easy to manufacture, biphase
Capacity can carry out different configurations as needed, and capacity utilization is high, and running cost is few, and three-phase Vv wiring is easily more real than single-phase Vv wiring
Now fix standby, the negative phase-sequence of power system is affected relatively small.
In photovoltaic power generation apparatus, Photovoltaic array, photovoltaic array are formed by connection in series-parallel by the less single photovoltaic module of capacity
In the serial number of photovoltaic module and number in parallel can send out in conjunction with the power of single photovoltaic module, the capacity of photovoltaic DC-to-AC converter, photovoltaic
The combined factors such as the installed capacity of electric installation, support cost and direct current cable cost consider.
Described photovoltaic DC-to-AC converter should have maximal power tracing (MPPT) function, to ensure that photovoltaic array can be as many as possible
Ground output electric energy.Selection to described photovoltaic DC-to-AC converter, can the combined factors such as bonding apparatus cost, cable cost, construction cost
Consider.
It is further that described tractive transformer includes No. 1 tractive transformer and No. 2 tractive transformers.Two tractions become
Depressor is standby each other, and during normal work, photovoltaic generating system is generated electricity can be by primary tractive transformer access system.
It is further that the primary side of described V/V wiring booster transformer is connected with photovoltaic DC-to-AC converter three, V/V wiring
Biphase in the secondary side of booster transformer is connected with two supply arms in tractive power supply system respectively, and V/V wiring rises buckling
The third phase of depressor is connected with No. 1 tractive transformer, No. 2 tractive transformers, and the third phase of V/V wiring booster transformer is simultaneously
It is connected with rail, described rail grounded screen；Described No. 1 tractive transformer and No. 2 Secondary Side of Traction Transformers biphase respectively with
Two supply arms in tractive power supply system are connected, the primary side of No. 1 tractive transformer and No. 2 tractive transformers and grid power transmission
Circuit is connected；Form three-phase alternating-current powered network, to coordinate tractive power supply system to use.
It is further that the rated primary voltage of described booster transformer is the rated output voltage of photovoltaic DC-to-AC converter,
Rated secondary voltage is 27.5kV or 55kV, according to set by traction power supply requires.
It is further that described tractive transformer is incorporated to tractive power supply system with V/V connection type.
It is further that described tractive transformer adopts V/V connection type；The specified electricity of primary side of described tractive transformer
Press as 110kV or 220kV, the rated secondary voltage of tractive transformer is 27.5kV or 55kV；The one of described tractive transformer
Secondary side is connected with grid power transmission circuit three-phase, biphase two power supplies with tractive power supply system respectively of Secondary Side of Traction Transformer
Arm is connected, and the third phase of Secondary Side of Traction Transformer is connected with rail and booster transformer simultaneously, described rail grounded screen；According to
The electric pressure demand of tractive power supply system and grid power transmission circuit and set, realize grid power transmission circuit and tractive power supply system
Between electric energy interaction.
It is further in system, also to include electric energy metering machine, described electric energy metering machine is located at tractive transformer respectively
On the circuit that high-pressure side is connected with grid power transmission circuit；In order to calculate electric energy used by tractive power supply system and to calculate photovoltaic plant
Remaining electricity online amount, thus being settled accounts with power system.
On the other hand, the present invention also proposes a kind of electric energy management side of the railway traction power supply system based on photovoltaic generation
Method, including step：
S01, the traction load state of monitoring tractive power supply system；
S02, judges whether tractive power supply system has traction load demand, if need not ask, the electricity that photovoltaic power generation apparatus produce
Grid power transmission circuit being led to, if there being demand, carrying out next step；
S03, judges whether that the output meeting photovoltaic power generation apparatus is more than traction load power demand, if being unsatisfactory for,
There is provided electric energy by power grid transmission line road direction tractive power supply system；If meeting, carry out next step；
S04, first provides electric energy to tractive power supply system from photovoltaic power generation apparatus, and dump energy is defeated to grid power transmission circuit
Send.
It is further that the electric energy that described photovoltaic power generation apparatus produce through inversion and boosts to needed for tractive power supply system
Electric pressure；First meet the demand of traction load；When there being unnecessary electric energy, electric energy produced by photovoltaic power generation apparatus is through traction
Transformator is fed to grid power transmission circuit.
Beneficial effect using the technical program：
1., using the forms of electricity generation generated power for their own use, remaining electricity is surfed the Net, that is, photovoltaic plant is generated electricity and can be met traction load first
Demand, when there being unnecessary electric energy, photovoltaic plant is generated electricity and can be fed to high voltage power transmisson system through tractive transformer.
2. photovoltaic module is arranged in the vicinity of traction substation it is not necessary to separately set up ceiling in the form of photovoltaic plant,
Make transmission line of electricity more neat, reduce and lead to set up the danger that ceiling damage brings because of a variety of causes.
3. the exchange that the electric energy that photovoltaic module produces is incorporated to two supply arms of traction substation after concentrating inversion, boosting is female
On line, a photovoltaic plant only needs a booster transformer to can access tractive power supply system, can effectively prevent from sending out photovoltaic
Electricity is directly accessed the impact that contact net produces to the protection of tractive power supply system.
4. the present invention is unrestricted for the capacity requirement of photovoltaic plant, and primary equipment investment is less.
5.V/V wiring booster transformer connection type simply it is only necessary to 2 windings, can pass through two single-phase transformations
Device is used in combination and uses it is also possible to two single-phase transformers are arranged in same fuel tank, and required cost is relatively low.V/V
Wiring booster transformer can make photovoltaic generation, electrical network and traction power supply reach Optimum Matching；Photovoltaic generation dress can be completed
The conversion of electric pressure needed for railway traction power supply system for the electric pressure put；And can be effective using V/V connection type
Reduce on the impact of the negative phase-sequence of power system it is ensured that grid connection security.
Brief description
Fig. 1 is a kind of structural representation of railway traction power supply system based on photovoltaic generation of the present invention；
Fig. 2 is a kind of concrete wiring diagram of the railway traction power supply system based on photovoltaic generation in the embodiment of the present invention；
Fig. 3 is a kind of electric energy management method of the railway traction power supply system based on photovoltaic generation in the embodiment of the present invention
Flow chart；
Fig. 4 is when having traction load in the supply district of traction substation and photovoltaic plant is exerted oneself greatly in the embodiment of the present invention
Current flow diagrams when traction load, in system；
Fig. 5 be in the embodiment of the present invention when have traction load in the supply district of traction substation and photovoltaic plant exert oneself little
Current flow diagrams when traction load, in system；
Fig. 6 is the electric current in the embodiment of the present invention when no traction load in the supply district of traction substation, in system
Flow graph；
Wherein, 11 is photovoltaic module, and 12 is photovoltaic power generation apparatus, and 13 is photovoltaic DC-to-AC converter, and 14 is booster transformer, and 15 are
No. 1 tractive transformer, 16 is No. 2 tractive transformers, and 17 is tractive power supply system, and 18 is traction load, and 19 is electric energy metering machine,
20 is grid power transmission circuit.
Specific embodiment
In order that the object, technical solutions and advantages of the present invention are clearer, below in conjunction with the accompanying drawings the present invention is made into one
Step illustrates.
In the present embodiment, shown in Figure 1, the present invention is proposed a kind of power supply based on the rail traction of photovoltaic generation and is
System, including photovoltaic power generation apparatus 12, photovoltaic DC-to-AC converter 13, booster transformer 14, tractive transformer and tractive power supply system 17；
Described photovoltaic power generation apparatus 12 electric energy output end connects to booster transformer 14 once through photovoltaic DC-to-AC converter 13
Side ports, the secondary port of described booster transformer 14 connects to tractive power supply system 17, on described tractive power supply system 17
It is also associated with the tractive transformer connecting to grid power transmission circuit 20；
Wherein, described booster transformer 14 adopts V/V wiring booster transformer；So that the electric pressure of threephase AC electric energy
Reach the electric pressure needed for railway traction power supply system 17.
In photovoltaic power generation apparatus 12, Photovoltaic array, photovoltaic are formed by connection in series-parallel by the less single photovoltaic module 11 of capacity
The serial number of photovoltaic module 11 in array and number in parallel can be in conjunction with the appearances of the power of single photovoltaic module 11, photovoltaic DC-to-AC converter 13
The combined factors such as amount, the installed capacity of photovoltaic power generation apparatus 12, support cost and direct current cable cost consider.
Described photovoltaic DC-to-AC converter 13 should have maximal power tracing MPPT function, to ensure that photovoltaic array can be as many as possible
Ground output electric energy.Selection to described photovoltaic DC-to-AC converter 13, can the factor such as bonding apparatus cost, cable cost, construction cost comprehensive
Close and consider.
As the prioritization scheme of above-described embodiment, described tractive transformer includes No. 1 tractive transformer 15 and No. 2 tractions become
Depressor 16.Two tractive transformers are standby each other, and during normal work, photovoltaic generating system is generated electricity can be by primary traction voltage transformation
Device access system.
The primary side of described V/V wiring booster transformer is connected with photovoltaic DC-to-AC converter 13 3, V/V wiring booster transformer
Secondary side in biphase be connected with two supply arms in tractive power supply system 17 respectively, the of V/V wiring booster transformer
15, No. 2 tractive transformers 16 of three-phase and No. 1 tractive transformer are connected, and the third phase of V/V wiring booster transformer simultaneously with steel
Rail connects, described rail grounded screen；Form three-phase alternating-current powered network, to coordinate tractive power supply system 17 to use.
The rated primary voltage of described booster transformer 14 is the rated output voltage of photovoltaic DC-to-AC converter 13, secondary side volume
Determining voltage is 27.5kV or 55kV, according to set by traction power supply requires.
Described tractive transformer is incorporated to tractive power supply system 17 with V/V connection type.
Wherein, described tractive transformer adopts V/V connection type；The rated primary voltage of described tractive transformer is
110kV or 220kV, the rated secondary voltage of tractive transformer is 27.5kV or 55kV；The primary side of described tractive transformer
It is connected with grid power transmission circuit 20 3, biphase two power supplies with tractive power supply system 17 respectively of Secondary Side of Traction Transformer
Arm is connected, and the third phase of Secondary Side of Traction Transformer is connected with rail and booster transformer 14 simultaneously, described rail grounded screen；Root
Set according to the electric pressure demand of tractive power supply system 17 and grid power transmission circuit 20, realize grid power transmission circuit 20 and traction
Electric energy interaction between electric power system 17.
When being embodied as：Access the tractive power supply system 17 of photovoltaic plant, containing No. 1 tractive transformer 15 and No. 2 tractions
Transformator 16, two tractive transformers are standby each other, and all using V/V wiring；The specified electricity of primary side of described tractive transformer
Press as 110kV or 220kV, depending on the electric pressure of the power system of traction substation institute power taking, its rated secondary voltage
For 27.5kV or 55kV；The primary side of described tractive transformer is connected with high voltage power transmisson system three, biphase point of its secondary side
Two supply arms in interval of not powered with traction substation are connected, and third phase is connected with V/V wiring booster transformer 14, simultaneously with
Rail connects with grounded screen.
As the prioritization scheme of above-described embodiment, in system, also include electric energy metering machine 19,19 points of described electric energy metering machine
Wei Yu not be on the circuit that is connected with grid power transmission circuit 20 of high-pressure side of tractive transformer；In order to calculate tractive power supply system 17 institute
With the remaining electricity online amount of electric energy and calculating photovoltaic plant, thus being settled accounts with power system.
When being embodied as：Access the tractive power supply system 17 of photovoltaic plant, containing metering points of electric energy at two, metering points of electric energy
Effect be the remaining electricity online amount calculating electric energy used by tractive power supply system 17 and calculating photovoltaic plant, thus and power system
Settled accounts.Before described metering points of electric energy is located at photovoltaic electric station grid connection point, that is, metering points of electric energy is located at two tractive transformers
High-pressure side 110kV or 220kV be connected with power system.
Concrete connection type in the embodiment of the present invention, as shown in Fig. 2 ultra-high-tension power transmission line is connected with tractive transformer three
Connect, tractive transformer adopts V/V connection type, two power supplies in the biphase interval that powers respectively of its secondary side with traction substation
Arm is connected, and third phase is connected with rail and V/V wiring booster transformer 14.Photovoltaic plant and V/V wiring booster transformer 14
It is equally three to be connected, the biphase interval that powers with traction substation respectively in the secondary side of V/V wiring booster transformer 14
Article two, supply arm is connected, and third phase is connected with rail and tractive transformer.Tractive power supply system 17 provides electricity for locomotive load
Can, wherein rail grounded screen.
For coordinating the realization of the inventive method, based on identical inventive concept, as shown in figure 3, present invention also offers one
Plant the electric energy management method of the railway traction power supply system based on photovoltaic generation, including step：
S01, traction load 18 state of monitoring tractive power supply system 17；
S02, judges whether tractive power supply system 17 has traction load 18 demand, if need not ask, photovoltaic power generation apparatus 12 produce
Raw electric energy leads to grid power transmission circuit 20, if there being demand, carries out next step；
S03, judges whether that the output meeting photovoltaic power generation apparatus 12 is more than traction load 18 power demand, if discontented
Sufficient then provide electric energy from grid power transmission circuit 20 to tractive power supply system 17；If meeting, carry out next step；
S04, first provides electric energy to tractive power supply system 17 from photovoltaic power generation apparatus 12, dump energy is to grid power transmission circuit
20 conveyings.
Wherein, the electric energy that described photovoltaic power generation apparatus 12 produce through inversion and boosts to electricity needed for tractive power supply system 17
Pressure grade；First meet the demand of traction load 18；When there being unnecessary electric energy, electric energy produced by photovoltaic power generation apparatus 12 is through leading
Draw transformator and be fed to grid power transmission circuit 20.
Operation principle of the present invention, as Figure 4-Figure 6：
When having traction load 18 in the supply district of tractive power supply system 17, photovoltaic power generation apparatus 12 electricity can be by
Meet the demand of traction load 18 first, if now photovoltaic power generation apparatus 12 exert oneself more than the demand of traction load 18, unnecessary
Electric energy grid power transmission circuit 20 will be fed to by tractive transformer, if now the exerting oneself less than traction of photovoltaic power generation apparatus 12
The demand of load 18, then not enough electric energy tractive power supply system will be delivered to by grid power transmission circuit 20 by tractive transformer
17；When no traction load 18 in the supply district of tractive power supply system 17, whole electric energy that photovoltaic power generation apparatus 12 are sent out will
Grid power transmission circuit 20 is fed to by tractive transformer.
Ultimate principle and principal character and the advantages of the present invention of the present invention have been shown and described above.The technology of the industry
, it should be appreciated that the present invention is not restricted to the described embodiments, the simply explanation described in above-described embodiment and description is originally for personnel
The principle of invention, without departing from the spirit and scope of the present invention, the present invention also has various changes and modifications, these changes
Change and improvement both falls within scope of the claimed invention.Claimed scope by appending claims and its
Equivalent thereof.
Claims (9)
1. a kind of railway traction power supply system based on photovoltaic generation is it is characterised in that include photovoltaic power generation apparatus (12), photovoltaic
Inverter (13), booster transformer (14), tractive transformer and tractive power supply system (17)；
Described photovoltaic power generation apparatus (12) electric energy output end connects through photovoltaic DC-to-AC converter (13) to the one of booster transformer (14)
Secondary side ports, the secondary port of described booster transformer (14) connects to tractive power supply system (17), described traction power supply system
The tractive transformer connecting to grid power transmission circuit (20) is also associated with system (17)；
Wherein, described booster transformer (14) adopts V/V wiring booster transformer.
2. a kind of railway traction power supply system based on photovoltaic generation according to claim 1 is it is characterised in that described lead
Draw transformator and include No. 1 tractive transformer (15) and No. 2 tractive transformers (16).
3. a kind of railway traction power supply system based on photovoltaic generation according to claim 2 is it is characterised in that described V/
The primary side of V wiring booster transformer is connected with photovoltaic DC-to-AC converter (13) three, in the secondary side of V/V wiring booster transformer
Biphase be connected with two supply arms in tractive power supply system (17) respectively, the third phase of V/V wiring booster transformer is led with No. 1
Draw transformator (15), No. 2 tractive transformers (16) are connected, and the third phase of V/V wiring booster transformer be connected with rail simultaneously,
Described rail grounded screen；Described No. 1 tractive transformer (15) and No. 2 tractive transformer (16) secondary sides biphase respectively with traction
Two supply arms in electric power system (17) are connected, the primary side of No. 1 tractive transformer (15) and No. 2 tractive transformers (16) and
Grid power transmission circuit (20) is connected.
4. a kind of railway traction power supply system based on photovoltaic generation according to claim 3 is it is characterised in that described liter
The rated primary voltage of pressure transformer (14) is the rated output voltage of photovoltaic DC-to-AC converter (13), and rated secondary voltage is
27.5kV or 55kV.
5. a kind of railway traction power supply system based on photovoltaic generation according to claim 4 is it is characterised in that described lead
Draw transformator and tractive power supply system (17) is incorporated to V/V connection type.
6. a kind of railway traction power supply system based on photovoltaic generation according to claim 1 or 5 it is characterised in that
Described tractive transformer adopts V/V connection type；The rated primary voltage of described tractive transformer is 110kV or 220kV, leads
The rated secondary voltage drawing transformator is 27.5kV or 55kV；The primary side of described tractive transformer and grid power transmission circuit
(20) three are connected, and the biphase of Secondary Side of Traction Transformer is connected with two supply arms of tractive power supply system (17) respectively, leads
The third phase drawing Circuit Fault on Secondary Transformer is connected with rail and booster transformer (14) simultaneously, described rail grounded screen.
7. a kind of railway traction power supply system based on photovoltaic generation according to claim 6 is it is characterised in that also include
Electric energy metering machine (19), described electric energy metering machine (19) is located at high-pressure side and the grid power transmission circuit (20) of tractive transformer respectively
On connected circuit.
8. a kind of electric energy management method of the railway traction power supply system based on photovoltaic generation is it is characterised in that include step：
S01, traction load (18) state of monitoring tractive power supply system (17)；
S02, judges whether tractive power supply system (17) has traction load (18) demand, if need not ask, photovoltaic power generation apparatus (12)
The electric energy producing leads to grid power transmission circuit (20), if there being demand, carries out next step；
S03, judges whether that the output meeting photovoltaic power generation apparatus (12) is more than traction load (18) power demand, if discontented
Sufficient then from grid power transmission circuit (20) to tractive power supply system (17) provide electric energy；If meeting, carry out next step；
S04, first provides electric energy to tractive power supply system (17) from photovoltaic power generation apparatus (12), dump energy is to grid power transmission circuit
(20) convey.
9. the electric energy management method of a kind of railway traction power supply system based on photovoltaic generation according to claim 8, its
It is characterised by, the electric energy that described photovoltaic power generation apparatus (12) produce through inversion and boosts to electricity needed for tractive power supply system (17)
Pressure grade；First meet the demand of traction load (18)；When there being unnecessary electric energy, electric energy warp produced by photovoltaic power generation apparatus (12)
Cross tractive transformer and be fed to grid power transmission circuit (20).
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111725822A (en) * | 2020-07-17 | 2020-09-29 | 华北电力大学 | Photovoltaic power generation split-phase control method for power supply system and photovoltaic traction power supply system |
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Effective date of registration: 20191204 Address after: 610000 north section of two ring road, Sichuan, Chengdu Co-patentee after: CGN Wind Energy Limited Patentee after: Southwest Jiaotong University Address before: 610000 north section of two ring road, Sichuan, Chengdu Co-patentee before: CGN Solar Energy Development Co., Ltd. Patentee before: Southwest Jiaotong University |