CN102280923A - Wind/solar hybrid power supply system for traction power supply - Google Patents
Wind/solar hybrid power supply system for traction power supply Download PDFInfo
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- CN102280923A CN102280923A CN2011101955980A CN201110195598A CN102280923A CN 102280923 A CN102280923 A CN 102280923A CN 2011101955980 A CN2011101955980 A CN 2011101955980A CN 201110195598 A CN201110195598 A CN 201110195598A CN 102280923 A CN102280923 A CN 102280923A
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- 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
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- 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
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- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
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Abstract
The invention discloses a wind/solar hybrid power supply system for traction power supply. A wind turbine generator system generates a three-phase AC with a rated voltage of 690V, a rectification circuit and a Boost circuit convert the three-phase AC into a 1200V DC, a photovoltaic cell generates a DC, the Boost circuit converts the DC into a 1200V DC, an inversion unit inverts the 1200V DC into a single-phase 50Hz AC, a single phase transformer boosts the voltage to 35KV and directly supplies the single-phase 50Hz AC as a traction power source to a traction electrical substation, and an energy management unit controls the wind/solar hybrid power supply system for traction power supply to operate under four working conditions, according to the real operation conditions. In the power supply method of the invention, a wind/solar hybrid power supply is directly accessed to the primary side of the traction electrical substation, the complexity of the traction transformer is simplified, the negative phase-sequence problem and neutral-section passing problem generated by a railway electrification system in a power supply section are avoided, and the application of renewable energy in traction power supply is promoted.
Description
Technical field
The present invention relates to tractive power supply system, especially adopt wind energy, luminous energy complemental power-generation to be directly used in the technical field of traction power supply.
Background technology
Along with the fast development of electric railway, the China railways electrization rate had reached 45% in 2010.In the northern area of China, railway passes through depopulated zones such as Gobi desert, desert often, station along the line and communication relay station non-transformer can draw for connecing, and line voltage grade from far-off regions is difficult to satisfy the operation demand of electric railway, and long distance power transmission mode power supply capacity is more weak and expensive more.Secondly, because the asymmetry of traction load, a large amount of traction loads insert the three-phase imbalance of electric power system meeting causing electric power system, have a strong impact on the quality of power supply of electric power system.Therefore, the electric railway of remote districts not only will solve connecing of traction power supply power supply and draw problem, also needs to solve simultaneously the electric power quality problem that the negative phase-sequence problem is brought.
The northern area of China especially the Northwest has characteristics such as wind energy resources is abundant, the hours of daylight is long, and country has set up and planned to build upright many places wind energy turbine set and solar power plant in order to large-scale develop and utilize wind energy resources and solar energy resources.At present, because northern area highly energy-consuming load is less, wind-powered electricity generation ancillary transmission engineering lags behind, the wind energy turbine set of having set up is short running time, has produced more serious wind-powered electricity generation wasting of resources phenomenon.
Directly be electrified railway power supply if utilize wind energy resources and solar energy resources to set up the wind-solar complementary type electricity generation system, the electric energy of continous-stable can not only be provided for tractive power supply system, solve the powerup issue of particular section electric railway from far-off regions, to making up energy-saving and environmental protection type tractive power supply system important effect is arranged, also can accelerate simultaneously the on-site elimination of northern wind-powered electricity generation resource, alleviate of the restriction of electric power fan-out capability deficiency the wind-powered electricity generation industry development.
Summary of the invention
The problem that exists in view of the tractive power supply system of above statement and the energy-conservation demand of electric railway, it is that main power source, batteries are that stand-by power supply is the method for electrified railway power supply directly with the wind-light complementary system that the present invention aims to provide a kind of, and has designed a whole set of power supply plan.Enable to solve connecing of particular section electrified railway power supply power supply from far-off regions and draw problem, suppress of the influence of the negative phase-sequence problem of electric railway generation to electric power system, solve the phase-splitting problem of crossing of electric railway, help lend some impetus to the application of new forms of energy in traction power supply simultaneously.
Purpose of the present invention realizes by following means.
A kind of wind-photovoltaic complementary power supply system that is used for traction power supply, constitute by wind turbine generator, photovoltaic battery array, batteries, traction substation single-phase transformer, it is characterized in that described wind and solar hybrid generating system adopts following working method: it is that the three-phase alternating current of 690V is transformed to direct current 1200V through rectification circuit and Boost circuit that the wind-powered electricity generation unit sends rated voltage; The direct current that photovoltaic cell sends is transformed to direct current 1200V through the Boost circuit; The 1200V direct current is single-phase 50Hz alternating current through the inversion unit inversion, boosts to 35KV by single-phase transformer, directly supplies with traction substation as the traction power supply power supply; Between the electric power outlet side of wind turbine generator and photovoltaic battery array and traction substation, be provided with and gather single-phase inverter outlet side voltage and current and calculate, analyze and send control command according to the traction load of power supply section, regulate the energy management unit of the meritorious output of wind-powered electricity generation unit, photovoltaic cell, batteries, the wind and solar hybrid generating system that described energy management unit will be used for traction power supply according to practical operation situation is controlled under following four kinds of operating modes and moves:
1). work as P
1＞0 and P
1〉=P
LThe time, be that air velocity transducer detects wind speed greater than starting wind speed, and the meritorious output of wind-powered electricity generation unit be can satisfy Δ t period supply arm load operation the time, wind-solar complementary type traction power supply power supply moves under operating mode 1 pattern, promptly only by the wind turbine generator power supply, battery charging is to 90% of rated capacity;
2). work as P
1＞0 and P
1＜P
LThe time, be that air velocity transducer detects wind speed greater than starting wind speed, when output can not be satisfied traction power supply arm load operation but the wind-powered electricity generation unit is gained merit, wind-solar complementary type traction power supply power supply moved under operating mode 2 patterns, promptly start the mixed power generation pattern, by wind-powered electricity generation unit and photovoltaic cell complemental power-generation;
3). work as P
1=0 but P
2＞0, be that air velocity transducer detects wind speed less than starting wind speed, when the wind-powered electricity generation unit is in stopped status, but when the meritorious output of photovoltaic generation can be satisfied traction power supply arm load operation, wind-solar complementary type traction power supply power supply moves under operating mode 3 patterns, promptly by supplying power for photovoltaic cell, batteries is complementary powers;
4). work as P
1=0 and P
2=0 o'clock, when promptly wind-solar complementary type traction power supply power supply is in calm unglazed special meteorological condition, batteries be discharged to rated capacity 20% or start stand-by power supply, to satisfy traction power supply arm load operation demand.
Adopt tractive power supply system of the present invention, have following advantage:
(1) wind and solar hybrid generating system that is used for traction power supply of the present invention's proposition is not incorporated into the power networks, be output as the single phase industrial frequence alternating current, can be directly as the traction power supply power supply, this supply power mode can effectively be avoided the influence of the negative phase-sequence problem of electric railway generation to electric power system.
(2) wind and solar hybrid generating system that is used for traction power supply of the present invention's proposition is output as single-phase 50Hz interchange, directly insert traction substation as single phase poaer supply, it is the traction load power supply that electric substation adopts single-phase transformer, efficiently solves the phase-splitting problem of crossing that traditional electrical gasification railway produces.
(3) wind and solar hybrid generating system that is used for traction power supply that proposes of the present invention can solve connecing of electric railway traction power supply from far-off regions nearby and draws problem, helps the on-site elimination of northern area wind-powered electricity generation resource simultaneously, promotes the development and use of local wind resource.
(4) wind and solar hybrid generating system that is used for traction power supply of the present invention's proposition is simple in structure, the lower and easy realization of cost.
Description of drawings is as follows:
Fig. 1 is the wind and solar hybrid generating system application scheme schematic diagram that is used for traction power supply.
Fig. 2 is a wind light mutual complementing power generation cellular construction schematic diagram.
Fig. 3 is a wind-solar complementary type traction power supply power supply single-phase inversion cellular construction schematic diagram.
Fig. 4 is a wind-solar complementary type traction power supply power supply single phase power supply method schematic diagram.
Fig. 5 is a wind-solar complementary type traction power supply power supply energy management system operating mode decision-making schematic diagram.
Fig. 6 is a wind light mutual complementing EMS controlling models structure chart.
Embodiment
The wind and solar hybrid generating system that is used for traction power supply that the present invention proposes such as Fig. 1-shown in Figure 6.The present invention will be further described below in conjunction with accompanying drawing:
As shown in Figure 1, the wind-photovoltaic complementary power supply system that is used for traction power supply, be made of several wind light mutual complementing power generation unit, energy management unit, traction substation single-phase transformer, system adopts following working method: it is that the three-phase alternating current of 690V is transformed to direct current 1200V through rectification circuit and Boost circuit that the wind-powered electricity generation unit sends rated voltage; The direct current that photovoltaic cell sends is transformed to direct current 1200V through the Boost circuit; The 1200V direct current is single-phase 50Hz alternating current through the inversion unit inversion, boosts to 35KV by single-phase transformer, directly supplies with traction substation as the traction power supply power supply; Between the electric power outlet side of wind light mutual complementing power generation unit and traction substation, be provided with and gather single-phase inverter outlet side voltage and current and calculate, analyze and send control command, regulate the energy management unit of the meritorious output of wind-powered electricity generation unit, photovoltaic cell, batteries according to the traction load of power supply section.
The wind light mutual complementing power generation unit comprises the wind turbine generator of permanent magnet direct-driving aerogenerator, wind-powered electricity generation unit motor side current transformer formation and is made up of photoelectricity unit and batteries that photovoltaic battery array, single-phase inverter constitute; Wind turbine generator is connected with batteries in parallel with the photoelectricity unit.
As shown in Figure 2, each wind light mutual complementing power generation unit is formed by permanent magnet direct-driving aerogenerator group, wind-powered electricity generation unit motor side current transformer, single-phase inverter, photovoltaic battery array, batteries.1.5MW it is the 690V three-phase alternating current that the permanent magnetism direct drive wind group of motors is sent rated voltage, is transformed to direct current 1200V by motor side current transformer and Boost booster circuit.Photovoltaic cell sends the logical Boost booster circuit of direct current and is transformed to direct current 1200V.Wind-powered electricity generation unit and photovoltaic cell complemental power-generation, the constant output that keeps power supply unit.
As shown in Figure 3, the single-phase inverter of wind light mutual complementing power generation unit is made up of single-phase full bridge inverter circuit and single-phase transformer.In the single-phase full bridge inverter circuit, the signal complementation of VT1 and VT2, the signal complementation of VT3 and VT4,1,4 brachium pontis and 2,3 brachium pontis are rotated conducting, are that single-phase 50Hz exchanges with direct current 1200V inversion, boost to 35 kilovolts by single-phase transformer again.
As shown in Figure 4, n wind light mutual complementing power generation unit composes in parallel single phase alternating current power supply by n single-phase inversion unit, directly inserts the traction substation primary side, and electric substation adopts single-phase traction transformer to power to traction load.
The tradition method of supplying power to is that three phase mains is inserted the former limit of traction substation, is powered to single-phase load by the traction transformer of different wiring again.
As shown in Figure 5, according to supply arm traction load situation, wind-solar complementary type traction power supply power supply can be divided into four kinds of operating mode operations.If this section locomotive is P at Δ t period internal consumption power
L, wind energy turbine set power output in the Δ t period is P
1, photovoltaic cell power output in the Δ t period is P
2, Δ t is provided with according to power supply section locomotive operation density and local prevailling wind wind regime.Four kinds of operating conditions are as follows:
1. work as P
1＞0 and P
1〉=P
LThe time, be that air velocity transducer detects wind speed greater than starting wind speed, and the meritorious output of wind-powered electricity generation unit be can satisfy Δ t period supply arm load operation the time, wind-solar complementary type traction power supply power supply moves under operating mode 1 pattern, promptly only by the wind turbine generator power supply, battery charging is to 90% of rated capacity.
2. work as P
1＞0 and P
1＜P
LThe time, be that air velocity transducer detects wind speed greater than starting wind speed, when output can not be satisfied traction power supply arm load operation but the wind-powered electricity generation unit is gained merit, wind-solar complementary type traction power supply power supply moved under operating mode 2 patterns, promptly start the mixed power generation pattern, by wind-powered electricity generation unit and photovoltaic cell complemental power-generation.
3. work as P
1=0 but P
2＞0; be that air velocity transducer detects wind speed less than starting wind speed; when the wind-powered electricity generation unit is in stopped status; but when the meritorious output of photovoltaic generation can be satisfied traction power supply arm load operation; wind-solar complementary type traction power supply power supply moves under operating mode 3 patterns; promptly by supplying power for photovoltaic cell, batteries is complementary powers.
4. work as P
1=0 and P
2=0 o'clock, when promptly wind-solar complementary type traction power supply power supply is in calm unglazed special meteorological condition, batteries be discharged to rated capacity 20% or start stand-by power supply, to satisfy traction power supply arm load operation demand.
Fig. 6 is in conjunction with shown in Figure 1, EMS monitoring module real-time detecting system access point voltage, frequency and power output, gain merit and idle calculating according to the data of gathering, and control command distributed be sent to each generator unit, regulate the power output of wind-powered electricity generation unit, photovoltaic cell, batteries, regulate the output of single-phase PWM inverter, thereby realize the permanent power control and the constant voltage control of wind and solar hybrid generating system.The locomotive operation figure that EMS provides according to railway interests calculates the load condition of the traction power supply arm that supplies, and each typhoon group of motors, photovoltaic cell are optimized configuration, for system formulates rational operational plan.
Method of supplying power to provided by the invention directly inserts the traction substation primary side with the wind light mutual complementing single phase poaer supply, simplified the complexity of traction transformer, effectively avoid the negative phase-sequence problem of power supply section electric railway generation and crossed the phase-splitting problem, helped promoting the application of regenerative resource in traction power supply simultaneously.The wind and solar hybrid generating system that is used for traction power supply is simple in structure, the lower and easy realization of cost.
Claims (2)
1. wind-photovoltaic complementary power supply system that is used for traction power supply, be made of wind light mutual complementing power generation unit, single-phase inversion unit, energy management unit, traction substation single-phase transformer, described wind-photovoltaic complementary power supply system adopts following working method: it is that the three-phase alternating current of 690V is transformed to direct current 1200V through rectification circuit and Boost circuit that the wind-powered electricity generation unit sends rated voltage; The direct current that photovoltaic cell sends is transformed to direct current 1200V through the Boost circuit; The 1200V direct current is single-phase 50Hz alternating current through the inversion unit inversion, boosts to 35KV by single-phase transformer, directly supplies with traction substation and connects as the traction power supply power supply; Between the electric power outlet side of wind light mutual complementing power generation unit and traction substation, be provided with and gather single-phase inverter outlet side voltage and current and calculate, analyze and send control command according to the traction load of power supply section, regulate the energy management unit of the meritorious output of wind-powered electricity generation unit, photovoltaic cell, batteries, the wind and solar hybrid generating system that described energy management unit will be used for traction power supply according to practical operation situation is controlled under following four kinds of operating modes and moves:
1). work as P
1＞0 and P
1〉=P
LThe time, be that air velocity transducer detects wind speed greater than starting wind speed, and the meritorious output of wind-powered electricity generation unit be can satisfy Δ t period supply arm load operation the time, wind-solar complementary type traction power supply power supply moves under operating mode 1 pattern, promptly only by the wind turbine generator power supply, battery charging is to 90% of rated capacity;
2). work as P
1＞0 and P
1＜P
LThe time, be that air velocity transducer detects wind speed greater than starting wind speed, when output can not be satisfied traction power supply arm load operation but the wind-powered electricity generation unit is gained merit, wind-solar complementary type traction power supply power supply moved under operating mode 2 patterns, promptly start the mixed power generation pattern, by wind-powered electricity generation unit and photovoltaic cell complemental power-generation;
3). work as P
1=0 but P
2＞0, be that air velocity transducer detects wind speed less than starting wind speed, when the wind-powered electricity generation unit is in stopped status, but when the meritorious output of photovoltaic generation can be satisfied traction power supply arm load operation, wind-solar complementary type traction power supply power supply moves under operating mode 3 patterns, promptly by supplying power for photovoltaic cell, batteries is complementary powers;
4). work as P
1=0 and P
2=0 o'clock, when promptly wind-solar complementary type traction power supply power supply is in calm unglazed special meteorological condition, batteries be discharged to rated capacity 20% or start stand-by power supply, to satisfy traction power supply arm load operation demand.
2. according to the described a kind of wind-photovoltaic complementary power supply system that is used for traction power supply of claim 1, it is characterized in that described wind light mutual complementing power generation unit comprises the wind turbine generator of permanent magnet direct-driving aerogenerator group PMSG, rectification circuit and Boost circuit formation and is made up of photovoltaic generating system and batteries that photovoltaic battery array and Boost circuit constitute; Wind turbine generator is connected with batteries in parallel with the photovoltaic generation unit; Described wind light mutual complementing power generation unit directly inserts the traction substation primary side as single phase poaer supply by single-phase inverter.
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| CN2011101955980A CN102280923B (en) | 2011-07-13 | 2011-07-13 | Wind/solar hybrid power supply system for traction power supply |
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Cited By (11)
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| CN104319817A (en) * | 2014-11-18 | 2015-01-28 | 贵州电网公司电网规划研究中心 | Analysis method for wind power plant and electric railway interactive influence |
| CN104868498A (en) * | 2015-06-05 | 2015-08-26 | 江苏同芯电气科技有限公司 | Topological structure for wind-solar integrated large-power grid-connected converter system |
| CN106611963A (en) * | 2016-07-14 | 2017-05-03 | 中国能源建设集团甘肃省电力设计院有限公司 | Power supply system and power supply method for railways in desert areas based on wind-photovoltaic complementary power generation |
| CN106849060A (en) * | 2017-02-10 | 2017-06-13 | 中广核太阳能开发有限公司 | A kind of high-speed railway tractive power supply system and control method containing photo-voltaic power supply |
| CN106828123A (en) * | 2017-02-10 | 2017-06-13 | 西南交通大学 | The high-speed railway tractive power supply system and control method of a kind of distributed photovoltaic power |
| CN107181273A (en) * | 2017-07-05 | 2017-09-19 | 西南交通大学 | A kind of electric railway generating suppling device and its control method |
| CN107317387A (en) * | 2017-06-27 | 2017-11-03 | 中铁二院工程集团有限责任公司 | A kind of depot of urban railway transit vehicles combines electric power system |
| CN107749637A (en) * | 2017-10-17 | 2018-03-02 | 西南交通大学 | A kind of provide multiple forms of energy to complement each other grid-connected system and control method applied to electric railway |
| CN108336727A (en) * | 2018-01-23 | 2018-07-27 | 西南交通大学 | A kind of new energy supply system and control method for through traction power supply |
| CN110299713A (en) * | 2019-06-25 | 2019-10-01 | 西南交通大学 | A kind of tractive power supply system imbalance of three-phase voltage compensation method counted and wind power plant influences |
| CN114123319A (en) * | 2021-11-18 | 2022-03-01 | 武汉奥锐通信技术有限公司 | OPLC-based grid-connected power generation system |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104319817B (en) * | 2014-11-18 | 2015-09-09 | 贵州电网公司电网规划研究中心 | A kind of analytical method for wind energy turbine set and electric iron reciprocal effect |
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| CN104868498A (en) * | 2015-06-05 | 2015-08-26 | 江苏同芯电气科技有限公司 | Topological structure for wind-solar integrated large-power grid-connected converter system |
| CN106611963A (en) * | 2016-07-14 | 2017-05-03 | 中国能源建设集团甘肃省电力设计院有限公司 | Power supply system and power supply method for railways in desert areas based on wind-photovoltaic complementary power generation |
| CN106828123B (en) * | 2017-02-10 | 2023-04-07 | 西南交通大学 | High-speed railway traction power supply system with distributed photovoltaic power supply and control method |
| CN106849060A (en) * | 2017-02-10 | 2017-06-13 | 中广核太阳能开发有限公司 | A kind of high-speed railway tractive power supply system and control method containing photo-voltaic power supply |
| CN106828123A (en) * | 2017-02-10 | 2017-06-13 | 西南交通大学 | The high-speed railway tractive power supply system and control method of a kind of distributed photovoltaic power |
| CN107317387A (en) * | 2017-06-27 | 2017-11-03 | 中铁二院工程集团有限责任公司 | A kind of depot of urban railway transit vehicles combines electric power system |
| CN107181273A (en) * | 2017-07-05 | 2017-09-19 | 西南交通大学 | A kind of electric railway generating suppling device and its control method |
| CN107181273B (en) * | 2017-07-05 | 2023-05-05 | 西南交通大学 | Electrified railway power generation and supply device and control method thereof |
| CN107749637A (en) * | 2017-10-17 | 2018-03-02 | 西南交通大学 | A kind of provide multiple forms of energy to complement each other grid-connected system and control method applied to electric railway |
| CN108336727A (en) * | 2018-01-23 | 2018-07-27 | 西南交通大学 | A kind of new energy supply system and control method for through traction power supply |
| CN108336727B (en) * | 2018-01-23 | 2023-11-24 | 西南交通大学 | New energy supply system for through traction power supply and control method |
| CN110299713A (en) * | 2019-06-25 | 2019-10-01 | 西南交通大学 | A kind of tractive power supply system imbalance of three-phase voltage compensation method counted and wind power plant influences |
| CN114123319A (en) * | 2021-11-18 | 2022-03-01 | 武汉奥锐通信技术有限公司 | OPLC-based grid-connected power generation system |
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