CN105449711A - Multi-distributed-generation-unit grid-connected power generation system - Google Patents
Multi-distributed-generation-unit grid-connected power generation system Download PDFInfo
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- CN105449711A CN105449711A CN201510901499.8A CN201510901499A CN105449711A CN 105449711 A CN105449711 A CN 105449711A CN 201510901499 A CN201510901499 A CN 201510901499A CN 105449711 A CN105449711 A CN 105449711A
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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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- Control Of Eletrric Generators (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention relates to a multi-distributed-generation-unit grid-connected power generation system, comprising a plurality of generation units and an auxiliary energy source, wherein the output of the auxiliary energy source is divided into two paths; one path is connected with a primary coil of a transformer T1 via a filter circuit; a secondary coil of the transformer T1 is connected with the plurality of generation units via a silicon controlled rectifier; the other path of output of the auxiliary energy source is connected with a primary coil of a transformer T2 via the filter circuit; a secondary coil of the transformer T2 is connected with the plurality of generation units via a fixed rectifier and an inverter; the plurality of generation units are respectively connected with respective corresponding input ends of an inverter cascading unit; the inverter cascading unit connects the plurality of generation units in series so as to provide an overall output grid-connected voltage. The system disclosed by the invention has the advantages that the number of used transformers is reduced largely and the discontinuous and unstable phenomena of solar and wind power generation plants can be eliminated effectively so that the distributed generation units can obtain continuous and stable energy supply.
Description
Technical field
The invention belongs to Distributed-generation equipment to generate electricity by way of merging two or more grid systems technical field, particularly a kind of many distributed generation unit grid-connected system.
Background technology
At present in order to solve the environmental pollution that fossil energy shortage and fossil energy are brought, Distributed-generation equipment more and more obtains the concern of people, wind power generation, photovoltaic generations etc. obtain to be promoted widely, but because distributed power source is by the restriction of natural conditions, energy output and power quality are very unstable, difficulty is brought to the grid-connected power supply of distributed power source, distributed power source is in order to solve grid-connected problem, have to use transformer in a large number, inverter and other scrap build power supply qualitys, cause the deficiency that distributed power source online power supply cost is high.
Summary of the invention
The object of the invention is for the deficiencies in the prior art, and propose a kind of many distributed generation unit grid-connected system.
The present invention solves its technical problem and takes following technical scheme to realize:
A kind of many distributed generation unit grid-connected system, comprise by multiple distributed generation unit of generator unit 1 to generator unit n and supplementary energy, the output of supplementary energy is divided into two-way, the filter circuit be made up of resistance R1 and electric capacity C1 of leading up to is connected with the primary coil of transformer T1, the secondary coil of transformer T1 is connected with silicon controlled rectifier, the output of silicon controlled rectifier is connected with generator unit 1 to generator unit n, another road of supplementary energy is connected with the primary coil of transformer T2 after exporting the filter circuit by being made up of resistance R2 and electric capacity C2, the secondary winding of transformer T2 is connected with inverter after fixing rectifier, the output of inverter is connected with generator unit 1 to generator unit n again, generator unit 1 to generator unit n is connected with the input of each self-corresponding inverter concatenation unit 1 to inverter concatenation unit n respectively, multiple generator unit is together in series by inverter concatenation unit, the overall grid-connected voltage of output is provided.
And described inverter concatenation unit specifically adopts NPC type inverter concatenation unit.
And each generator unit in described generator unit 1 to generator unit n is wind power generation unit or photovoltaic generation unit.
And described supplementary energy is reserve cell or fuel generator, the electrical energy form itself that the two-way output form of supplementary energy is provided by supplementary energy determines to use which work.
Advantage of the present invention and good effect are:
1, present system is not when using transformer, the sine wave AC voltage of volt up to ten thousand can be exported, greatly reduce transformer usage quantity, the simultaneously also corresponding number of cables decreasing connection, so just cost of electricity-generating is reduced, reach boosting object, and it is low to have harmonic wave of output voltage distortion, the feature that equipment dependability is high.
2, the phenomenon that when the present invention effectively eliminates solar energy, wind power generation field discontinuous, unstable, calm cloudy day, unregulated power exports, accomplish the requirement of peak load shifting in good time, when solar energy, wind power generation field voltage decline, can directly be powered by supplementary energy supply line, direct help solar energy, wind power generation field provide corresponding differential section voltage, make solar energy, wind power generation field have how many how many, ensure the clamp current of solar energy, the uninterruptable power generation of wind power generation field, make wind power generation field obtain continuous and stable energy supply.
3, present system simple process, difficulty of construction is little, cost is excellent.
Accompanying drawing illustrates:
Fig. 1 is the structural representation of present system.
Embodiment
Be further described the invention process below, following examples are descriptive, are not determinate, can not limit protection scope of the present invention with this.
A kind of many distributed generation unit grid-connected system, as shown in Figure 1, comprise by multiple distributed generation unit of generator unit 1 to generator unit n and supplementary energy, the output of supplementary energy is divided into two-way, the filter circuit be made up of resistance R1 and electric capacity C1 of leading up to is connected with the primary coil of transformer T1, the secondary coil of transformer T1 is connected with silicon controlled rectifier, the output of silicon controlled rectifier is connected with generator unit 1 to generator unit n, another road of supplementary energy is connected with the primary coil of transformer T2 after exporting the filter circuit by being made up of resistance R2 and electric capacity C2, the secondary winding of transformer T2 is connected with inverter after fixing rectifier, the output of inverter is connected with generator unit 1 to generator unit n again, generator unit 1 to generator unit n is connected with the input of each self-corresponding inverter concatenation unit 1 to inverter concatenation unit n respectively, multiple generator unit is together in series by inverter concatenation unit, the overall grid-connected voltage of output is provided.
In specific embodiment of the invention, described inverter concatenation unit specifically adopts NPC type inverter concatenation unit.
In specific embodiment of the invention, each generator unit in described generator unit 1 to generator unit n is wind power generation unit or photovoltaic generation unit.
In specific embodiment of the invention, described supplementary energy is reserve cell or fuel generator, and the electrical energy form itself that the two-way output form of supplementary energy is provided by supplementary energy determines to use which work.
The invention has the advantages that and effectively can eliminate the phenomenons such as solar energy, wind power generation field are discontinuous, unstable, calm cloudy day, accomplish the requirement of peak load shifting in good time, when solar energy, wind power generation field voltage decline, can directly be powered by supplementary energy supply line, direct help solar energy, wind power generation field provide corresponding differential section voltage, make solar energy, wind power generation field have how many how many, with the clamp current ensureing solar energy, the uninterruptable power generation of wind power generation field, wind power generation field is made to obtain continuous and stable energy supply.
Claims (4)
1. distributed generation unit grid-connected system more than a kind, it is characterized in that: comprise by multiple distributed generation unit of generator unit 1 to generator unit n and supplementary energy, the output of supplementary energy is divided into two-way, the filter circuit be made up of resistance R1 and electric capacity C1 of leading up to is connected with the primary coil of transformer T1, the secondary coil of transformer T1 is connected with silicon controlled rectifier, the output of silicon controlled rectifier is connected with generator unit 1 to generator unit n, another road of supplementary energy is connected with the primary coil of transformer T2 after exporting the filter circuit by being made up of resistance R2 and electric capacity C2, the secondary winding of transformer T2 is connected with inverter after fixing rectifier, the output of inverter is connected with generator unit 1 to generator unit n again, generator unit 1 to generator unit n is connected with the input of each self-corresponding inverter concatenation unit 1 to inverter concatenation unit n respectively, multiple generator unit is together in series by inverter concatenation unit, the overall grid-connected voltage of output is provided.
2. many distributed generation unit grid-connected system according to claim 1, is characterized in that: described inverter concatenation unit specifically adopts NPC type inverter concatenation unit.
3. many distributed generation unit grid-connected system according to claim 1, is characterized in that: each generator unit in described generator unit 1 to generator unit n is wind power generation unit or photovoltaic generation unit.
4. many distributed generation unit grid-connected system according to claim 1, it is characterized in that: described supplementary energy is reserve cell or fuel generator, the electrical energy form itself that the two-way output form of supplementary energy is provided by supplementary energy determines to use which work.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510901499.8A CN105449711A (en) | 2015-12-09 | 2015-12-09 | Multi-distributed-generation-unit grid-connected power generation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510901499.8A CN105449711A (en) | 2015-12-09 | 2015-12-09 | Multi-distributed-generation-unit grid-connected power generation system |
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| CN105449711A true CN105449711A (en) | 2016-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510901499.8A Pending CN105449711A (en) | 2015-12-09 | 2015-12-09 | Multi-distributed-generation-unit grid-connected power generation system |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130229056A1 (en) * | 2012-03-05 | 2013-09-05 | Ralph Teichmann | Auxiliary equipment system and method of operating the same |
| CN203617724U (en) * | 2013-12-20 | 2014-05-28 | 王日晟 | Solar power station intelligent grid connection power generation device system |
| JP2015015845A (en) * | 2013-07-05 | 2015-01-22 | アイシン精機株式会社 | Power generation system |
| JP2015142397A (en) * | 2014-01-27 | 2015-08-03 | 株式会社ノーリツ | Power Conditioner |
| CN104935014A (en) * | 2015-07-20 | 2015-09-23 | 芜湖市大文节能环保技术有限公司 | New energy wind power generation field grid-connected power generation system |
-
2015
- 2015-12-09 CN CN201510901499.8A patent/CN105449711A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130229056A1 (en) * | 2012-03-05 | 2013-09-05 | Ralph Teichmann | Auxiliary equipment system and method of operating the same |
| JP2015015845A (en) * | 2013-07-05 | 2015-01-22 | アイシン精機株式会社 | Power generation system |
| CN203617724U (en) * | 2013-12-20 | 2014-05-28 | 王日晟 | Solar power station intelligent grid connection power generation device system |
| JP2015142397A (en) * | 2014-01-27 | 2015-08-03 | 株式会社ノーリツ | Power Conditioner |
| CN104935014A (en) * | 2015-07-20 | 2015-09-23 | 芜湖市大文节能环保技术有限公司 | New energy wind power generation field grid-connected power generation system |
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Application publication date: 20160330 |
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