CN202616803U - Hybrid current-inversion-type power generation system using wind, light and superconducting magnetic energy storage - Google Patents
Hybrid current-inversion-type power generation system using wind, light and superconducting magnetic energy storage Download PDFInfo
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- CN202616803U CN202616803U CN2012201892924U CN201220189292U CN202616803U CN 202616803 U CN202616803 U CN 202616803U CN 2012201892924 U CN2012201892924 U CN 2012201892924U CN 201220189292 U CN201220189292 U CN 201220189292U CN 202616803 U CN202616803 U CN 202616803U
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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
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
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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
- 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
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/76—Power conversion electric or electronic aspects
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/10—Flexible AC transmission systems [FACTS]
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/60—Superconducting electric elements or equipment; Power systems integrating superconducting elements or equipment
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Abstract
A hybrid current-inversion-type power generation system using wind, light and superconducting magnetic energy storage comprises a fan (6), a motor-side current-source inverter (5) connected with the fan (6), a photovoltaic cell panel (9), a unilateral power boost converter (8), a voltage/current converter (7), a first superconductive magnetic coil (3), a second superconductive magnetic coil (4), a current-source grid-connected inverter (2) and a grid-connected inductor (1). The direct-current side of a motor side converter of the wind power generation system, the direct-current side of a photovoltaic side converter of the photovoltaic power generation system, and the superconductive magnetic coils of the magnetic energy storage are connected in series and share the current-source grid-connected inverter on the power grid side. According to the utility model, the superconducting magnetic energy storage system, the wind power generation system and the photovoltaic power generation system are effectively integrated at the direct-current side, and the superconducting magnetic energy storage at the direct-current side can store energy, smooth the unstable output power caused by the limitation of natural conditions of wind power generation and photovoltaic power generation, and provide good current-limiting function if a short-circuit fault occurs in the power grid.
Description
Technical field
The utility model is a kind of wind, light, the hybrid electric current inverse type of super conductive magnetic storage energy power generation system structure, belongs to the technical field of electrician, power electronics, generation of electricity by new energy.
Background technology
Distributed power generation based on regenerative resource is fast-developing just in the world, and its reason has: (1) traditional energy such as coal etc. can produce oxycarbide, cause environmental pollution and greenhouse effect.(2) open electricity market will allow more supply of electrical energy merchants to participate in electrical network to bid.(3) ever-increasing need for electricity and the contradiction between in short supply of supplying power.This is particularly outstanding in developing countries such as China, India.Compare with traditional energy speedups such as coals, regenerative resource annual growth in the past few years is one of the fastest energy field of growth rate all above 30%.
In various regenerative resource distributed generation systems, wind power generation and photovoltaic generation are two kinds of new forms of energy with fastest developing speed.Wherein wind power generation has the low and high advantage of efficient of cost, and its wind energy of blade being caught through wind-driven generator converts electric energy into, and is sent to electrical network through converters.Photovoltaic generation is electric energy through photovoltaic battery panel with transform light energy, and obtains to meet the grid-connected current of electrical network requirement via converters, and the required mechanical structure part of photovoltaic generation is less, but its relative wind power generation at present, cost is higher.
But no matter wind power generation or photovoltaic generation all receive the restriction of natural conditions, and the active power that they send has intermittent and instable characteristics.In order in power generation process, to guarantee stable active power output, these distributed generation systems based on regenerative resource must rely on energy-storage system.In various energy-storage systems, superconducting magnetic energy storage system has the advantage that power density height, life-span are long, the speed that discharges and recharges is fast, efficient is high.Superconducting magnetic energy storage system is made up of superconducting magnet, cryogenic system, magnet protection system, frequency converter and controller usually.Superconducting magnet coil is the core of superconducting magnetic energy storage system.
Present generation mode major part with energy-storage system and wind power generation and photovoltaic generation mixing use all is based on separately, and inverter is incorporated into the power networks; The combining inverter that so just needs many platform independent; Do not have direct contact between each system; Increased the quantity of combining inverter so on the one hand, made that the structure of whole system is more numerous and more jumbled, integrated level is low.Secondly, because a plurality of combining inverters form a plurality of access points that are incorporated into the power networks, this just needs to coordinate each other between each grid-connected system to control, and control algolithm is comparatively complicated.At last, wind power generation, photovoltaic generation, the integrated hybrid power system of energy-storage system are based on mostly adopt the voltage-source type combining inverter at present.Through the current source type combining inverter that the hybrid power system that wind power generation, photovoltaic generation and super conductive magnetic storage energy combine is still blank both at home and abroad.Different with the voltage-source type combining inverter, the current source type combining inverter has that topological structure is simple, the inverter output voltage waveform is good, the short circuit current protective capability is strong, inverter has from plurality of advantages such as boosting.
Wherein there are several key technology difficult points in this: (1) traditional wind, light complementary power generation system all be through wind generator system and photovoltaic generating system separately independently combining inverter in the parallel connection of electrical network AC side; Or, be incorporated into the power networks through public voltage source inverter again through voltage source type converter realization parallel connection at the direct current voltage bus place.But how wind generator system and photovoltaic generating system are still a technical problem in that DC side is integrated through the current source type combining inverter.(2) superconducting magnetic energy storage system can compensate the generating unsteadiness of wind power generation and photovoltaic generation as a kind of effective energy storage mode, in the regenerative resource distributed power generation, has played the effect of energy snubber.How superconducting magnetic energy storage system and wind power generation, photovoltaic generating system are effectively combined, and shared combining inverter is another technical problem between them.
The utility model content
For solving the problems of the technologies described above; The utility model provides a kind of wind, light, the hybrid electric current inverse type of super conductive magnetic storage energy electricity generation system; The utility model is wind power generation, the photovoltaic generation unstable power output that caused by natural conditions smoothly; And when the electrical network failed because, has good current-limiting function.
The utility model adopts following technical scheme:
A kind of wind, light, the hybrid electric current inverse type of super conductive magnetic storage energy electricity generation system; Comprise: blower fan, the motor side current source inverter, photovoltaic battery panel, unidirectional power booster converter, voltage/current converter and the current source type combining inverter that are connected with the three-phase output of blower fan respectively; On the output of said current source type combining inverter, be connected with the inductance that is incorporated into the power networks; The output of said photovoltaic battery panel is connected with the input of unidirectional power booster converter; The output of unidirectional power booster converter is connected with the input of voltage/current converter; Between motor side current source inverter, voltage/current converter and current source type combining inverter, be respectively equipped with first superconducting magnet coil, second superconducting magnet coil; And; One end of said first superconducting magnet coil is connected the other end and is connected with the common anode of motor side current source inverter with the common cathode of current source type combining inverter, an end of said second superconducting magnet coil is connected with the common anode of current source type combining inverter, and the other end is connected with first output of voltage/current converter; The common cathode of motor side current source inverter is connected with second output of voltage/current converter, and the current potential of first output of said voltage/current converter is higher than the current potential of second output of voltage/current converter.
Compared with prior art, the utlity model has following advantage:
The utility model characteristics are that wind generator system, photovoltaic generating system and superconducting magnetic energy storage system are at grid side common current source type interconnected inverter; The DC side of the DC side of wind generator system motor side converter, photovoltaic generating system photovoltaic side converter adopts the series connection form to be connected with superconducting magnet coil; Therefore only need control flows to cross the electric current of superconducting magnet coil; Just can realize control to wind generator system and photovoltaic generating system dc bus current; Reduced controlled quentity controlled variable, and control more directly, simply.Wind generator system motor side converter is used to realize the maximal power tracing control and the efficiency optimization of wind-driven generator, and photovoltaic generating system photovoltaic side converter is used to realize the maximal power tracing control of photovoltaic cell; This wind, light, the shared current source type combining inverter of super conductive magnetic storage energy hybrid power system grid side are used to realize the control of grid side power output.
Say from concrete structure; The superconducting magnet coil of superconducting magnetic energy storage system is as the dc bus inductance of whole wind, light, super conductive magnetic storage energy hybrid power system; The series connection at direct current bus place of the DC side of wind generator system motor side converter and superconducting magnet coil, photovoltaic generating system changes current DC/DC converter through unidirectional power voltage boosting dc/DC converter and voltage and superconducting magnet coil is connected at direct current bus place.This direct current bus is incorporated into the power networks through current source inverter again.
1, the wind that the utility model proposed, light, super conductive magnetic storage energy hybrid power system are incorporated into the power networks based on current source inverter, the wind based on voltage source inverter different from the past, the complementary new forms of energy grid-connecting apparatus of light.The current source inverter dc bus adopts super conductive magnetic storage energy coil, comparison with voltage source type inverter dc-link capacitance longer service life.Current source inverter has boost function, and the regenerative resource output voltage that ability will be lower promotes, and voltage source inverter only has buck functionality.Because the super conductive magnetic storage energy coil of DC side exists, the hybrid power system of the utility model has good current-limiting function when the electrical network failed because, but the conventional voltage source type interconnected inverter does not possess this function.
2, the utility model makes the shared current source type combining inverter of wind generator system, photovoltaic generating system and superconducting magnetic energy storage system, and wind generator system different from the past, photovoltaic generating system and superconducting magnetic energy storage system adopt the mode of independent combining inverter separately respectively.Therefore the utility model has reduced the number of combining inverter, has practiced thrift cost.Because the utility model only need be controlled a shared combining inverter in grid side, therefore control is direct more, simple simultaneously.
3, the utility model with superconducting magnetic energy storage system, wind generator system and photovoltaic system in the DC side effective integration; The superconducting magnet coil of DC side can storage power; Smoothly wind power generation, photovoltaic generation receive the unstable power output that natural conditions cause, when promptly wind energy, luminous energy are big, but the energy of superconducting magnetic energy storage system absorbing redundant; And wind energy, luminous energy are hour, and superconducting magnetic energy storage system can be to the electrical network makeup energy.On the other hand, when electrical network broke down, the wind in the utility model, light, super conductive magnetic storage energy hybrid power system will break off with electrical network and near load forms the isolated island electrical network together.Because this hybrid power system has the ability of energy absorption and release, can energy be provided near load in the isolated island electrical network, satisfy power reguirements.
4, when the electrical network failed because, traditional wind generator system, photovoltaic generating system can't be again to the electrical network delivering powers, and unnecessary wind energy, luminous energy can cause combining inverter DC bus-bar voltage or electric current to surpass safety value.The hybrid power system that the utility model proposed but can store the wind energy under the short circuit malfunction situation, luminous energy in the superconducting magnet coil of dc bus effectively, can not cause the phenomenon of overcurrent or overvoltage.
Description of drawings
Fig. 1 is the hybrid electric current inverse type of wind, light, the super conductive magnetic storage energy power generation system structure sketch map that the utility model proposes.Wherein have: the inductance 1 that is incorporated into the power networks, current source type combining inverter 2, superconducting magnet coil 3, superconducting magnet coil 4, generating pusher side current source inverter 5, blower fan 6, voltage/current converter 7, unidirectional power booster converter 8, photovoltaic cell 9.
Fig. 2 is the specific embodiments sketch map of the hybrid electric current inverse type of wind, light, the super conductive magnetic storage energy electricity generation system that proposes of the utility model.Wherein have: nonlinear load 10, wind, light, the hybrid electric current inverse type of super conductive magnetic storage energy electricity generation system 11, linear load 12, circuit breaker 13, linear load 14, electrical network 15.
Embodiment
A kind of wind, light, the hybrid electric current inverse type of super conductive magnetic storage energy electricity generation system; Comprise: blower fan 6, the motor side current source inverter 5, photovoltaic battery panel 9, unidirectional power booster converter 8, voltage/current converter 7 and the current source type combining inverter 2 that are connected with the three-phase output of blower fan 6 respectively; On the output of said current source type combining inverter 2, be connected with the inductance 1 that is incorporated into the power networks; The output of said photovoltaic battery panel 9 is connected with the input of unidirectional power booster converter 8; The output of unidirectional power booster converter 8 is connected with the input of voltage/current converter 7; Between motor side current source inverter 5, voltage/current converter 7 and current source type combining inverter 2, be respectively equipped with first superconducting magnet coil 3, second superconducting magnet coil 4; And; One end of said first superconducting magnet coil 3 is connected with the common cathode of current source type combining inverter 2; The other end of first superconducting magnet coil 3 is connected with the common anode of motor side current source inverter 5, and an end of said second superconducting magnet coil 4 is connected with the common anode of current source type combining inverter 2, and the other end of second superconducting magnet coil 4 is connected with first output of voltage/current converter 7; The common cathode of motor side current source inverter 5 is connected with second output of voltage/current converter 7, and the current potential of first output of said voltage/current converter 7 is higher than the current potential of second output of voltage/current converter 7.
With reference to the accompanying drawings, the utility model is made more detailed description:
Among Fig. 1, the inductance 1 that is incorporated into the power networks links at the direct current bus through current source type combining inverter 2 and first superconducting magnet coil 3, second superconducting magnet coil 4.First superconducting magnet coil 3, second superconducting magnet coil 4 are through the current source type combining inverter 2 and the inductance 1 exchange power that is incorporated into the power networks.First superconducting magnet coil 3 links through motor side current source inverter 5 and blower fan 6.Second superconducting magnet coil 4 links with voltage/current converter 7, and voltage/current converter 7 links through unidirectional power booster converter 8 and photovoltaic cell 9.Motor side current source inverter 5 and photovoltaic side voltage/current converter 7 are connected in series at direct current bus place, with first superconducting magnet coil 3, second superconducting magnet coil, 4 positive energy exchanges.
Among Fig. 2, nonlinear load 10, wind, light, the hybrid electric current inverse type of super conductive magnetic storage energy electricity generation system 11, linear load 12 are in the grid side parallel connection.When circuit breaker 13 closures, nonlinear load 10, wind, light, the hybrid electric current inverse type of super conductive magnetic storage energy electricity generation system 11, linear load 12 and linear load 14, electrical network 15 link.Wind, light, the hybrid electric current inverse type of super conductive magnetic storage energy electricity generation system 11 are injected specific meritorious, reactive power in electrical network 15.
When circuit breaker 13 broke off, nonlinear load 10, wind, light, the hybrid electric current inverse type of super conductive magnetic storage energy electricity generation system 11, linear load 12 formed the isolated island electrical network among Fig. 2.Wind, light, the hybrid electric current inverse type of super conductive magnetic storage energy electricity generation system 11 will provide energy to nonlinear load 10 and linear load 12.
Claims (1)
1. a wind, light, the hybrid electric current inverse type of super conductive magnetic storage energy electricity generation system; It is characterized in that; Comprise: blower fan (6), the motor side current source inverter (5), photovoltaic battery panel (9), unidirectional power booster converter (8), voltage/current converter (7) and the current source type combining inverter (2) that are connected with the three-phase output of blower fan (6) respectively; On the output of said current source type combining inverter (2), be connected with the inductance that is incorporated into the power networks (1); The output of said photovoltaic battery panel (9) is connected with the input of unidirectional power booster converter (8); The output of unidirectional power booster converter (8) is connected with the input of voltage/current converter (7); Between motor side current source inverter (5), voltage/current converter (7) and current source type combining inverter (2), be respectively equipped with first superconducting magnet coil (3), second superconducting magnet coil (4); And; One end of said first superconducting magnet coil (3) is connected with the common cathode of current source type combining inverter (2); The other end of first superconducting magnet coil (3) is connected with the common anode of motor side current source inverter (5), and an end of said second superconducting magnet coil (4) is connected with the common anode of current source type combining inverter (2), and the other end of second superconducting magnet coil (4) is connected with first output of voltage/current converter (7); The common cathode of motor side current source inverter (5) is connected with second output of voltage/current converter (7), and the current potential of first output of said voltage/current converter (7) is higher than the current potential of second output of voltage/current converter (7).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201892924U CN202616803U (en) | 2012-04-28 | 2012-04-28 | Hybrid current-inversion-type power generation system using wind, light and superconducting magnetic energy storage |
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| CN2012201892924U CN202616803U (en) | 2012-04-28 | 2012-04-28 | Hybrid current-inversion-type power generation system using wind, light and superconducting magnetic energy storage |
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| CN202616803U true CN202616803U (en) | 2012-12-19 |
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| CN2012201892924U Withdrawn - After Issue CN202616803U (en) | 2012-04-28 | 2012-04-28 | Hybrid current-inversion-type power generation system using wind, light and superconducting magnetic energy storage |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102646995A (en) * | 2012-04-28 | 2012-08-22 | 东南大学 | Wind, light and superconducting magnetic energy storage hybrid power generation system based on current-source inverters |
| CN103259289A (en) * | 2013-05-21 | 2013-08-21 | 长沙理工大学 | Method for obtaining available transfer capability of wind power system with DFIG based on optimal power flow |
| CN106329571A (en) * | 2016-09-14 | 2017-01-11 | 国网河南省电力公司平顶山供电公司 | Operation control method of DFIG grid side and rotor side PWM converter |
-
2012
- 2012-04-28 CN CN2012201892924U patent/CN202616803U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102646995A (en) * | 2012-04-28 | 2012-08-22 | 东南大学 | Wind, light and superconducting magnetic energy storage hybrid power generation system based on current-source inverters |
| CN102646995B (en) * | 2012-04-28 | 2014-04-16 | 东南大学 | Wind, light and superconducting magnetic energy storage hybrid power generation system based on current-source inverters |
| CN103259289A (en) * | 2013-05-21 | 2013-08-21 | 长沙理工大学 | Method for obtaining available transfer capability of wind power system with DFIG based on optimal power flow |
| CN103259289B (en) * | 2013-05-21 | 2016-03-30 | 长沙理工大学 | Based on the preparation method of optimal load flow containing DFIG wind power system available transfer capability |
| CN106329571A (en) * | 2016-09-14 | 2017-01-11 | 国网河南省电力公司平顶山供电公司 | Operation control method of DFIG grid side and rotor side PWM converter |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20121219 Effective date of abandoning: 20140416 |
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| RGAV | Abandon patent right to avoid regrant |