CN2924885Y - Middle-small-sized wind-power generator system - Google Patents
Middle-small-sized wind-power generator system Download PDFInfo
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- CN2924885Y CN2924885Y CN 200620072325 CN200620072325U CN2924885Y CN 2924885 Y CN2924885 Y CN 2924885Y CN 200620072325 CN200620072325 CN 200620072325 CN 200620072325 U CN200620072325 U CN 200620072325U CN 2924885 Y CN2924885 Y CN 2924885Y
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Abstract
The utility model discloses a small and medium-sized wind-driven generator system, including a plurality of small-sized wind-driven generators. The electricity produced by various small-sized wind-driven generators is first interconnected to the generatrix; the interconnected current drives a generator with capacity equal to or larger than the total capacity of a plurality of small-sized generators; then the generator drives the three-phase alternator with same capacity which is connected with generator to operate; and afterwards the power supply produced by the three-phase alternator is interconnected with the electric grid. The utility model has the advantages of that: as a plurality of small-sized generators are interconnected into a system, the current is transformed to produce high power; afterwards, the current drives the generator to operate and the generator drives the three-phase generator to operate; then the power produced by the three-phase alternator is interconnected with the electric grid, therefore, the system is indirectly connected with the electric grid instead of direct electrical connection so as to overcome the shortages of the voltage instability and volatile frequency of the wind-driven generator.
Description
Technical field
The utility model relates to a kind of wind power plant, particularly a kind of middle-size and small-size wind powered generator system.
Background technology
Wind-driven generator mainly has large-scale, medium-sized and small-sized branch, every kilowatt of comprehensive cost of large-scale wind-driven generator up to 10,000 yuan about, the transportation trouble, need 20 meters collection entrucking two to open, the highway, the transportation that require simultaneously to be equipped with level Four are wanted traffic control, also need to be equipped with 200 tons large crane during installation, the large crane expense is wanted ten thousand yuan of expense 10-30 every day, requires very high to wind speed.The 250KW wind-driven generator of Shanghai electromechanical research institute design for example, 1,250,000 yuan/platform of cost, 0.5 ten thousand yuan/KW.Though every to the eye KW cost is suitable with the hydroelectric station cost, but its rated wind speed reaches 14 meter per seconds (fresh gale), and the place of this wind speed is seldom, even have, but can not guarantee has throughout the year, thereby caused it independently to use, needed external electric power toward contact, thereby caused its cost of investment in fact to be higher than the hydroelectric station far away.Though and medium and small wind-driven generator is simple in structure, cost of investment is low, and energy output is limited, and because the spread of voltage of generator, frequency is indefinite, therefore can only adopt the storage battery energy storage, can't be incorporated into the power networks with the electrical network of Utilities Electric Co., so its use also is greatly limited.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art part and a kind of advantage that small-sized wind power generator is simple in structure, cost of investment is low that promptly has is provided, and can realize the medium and small wind powered generator system that is incorporated into the power networks with the existing power electrical network again.
The purpose of this utility model realizes by following approach.
A kind of middle-size and small-size wind powered generator system, its structural feature is: the small-sized wind power generator that comprises plural platform, the electricity that each small-sized wind power generator produces carries out inside earlier and is incorporated into the power networks behind the bus, drive capacity adds up to total capacity at least more than or equal to plural platform small-sized wind power generator motor work by the electric current after being incorporated into the power networks, motor drives coupled suitable capacity threephase alternator work again, and then power supply that threephase alternator is sent and electric power network are incorporated into the power networks.
Because the work of separate unit wind-driven generator is influenced greatly by wind speed, so its generator voltage is very unstable, frequency is indefinite, just can't be directly and electric power network be incorporated into the power networks, and the electricity that the small-sized wind power generator of plural platform is produced is earlier after self-organizing system is incorporated into the power networks in inside, be incorporated into the power networks with electric power network again, then directly do not electrically connect between wind-driven generator and the power network, but a kind of indirect connection, promptly pass through motor, drive generator again, the electricity and the electric power network that are sent by generator are incorporated into the power networks, therefore its just overcome middle-size and small-size wind-driven generator can't be directly and the shortcoming that is incorporated into the power networks of electric power network, in also having overcome simultaneously, the small-sized wind power generator energy output is limited, and the low shortcoming of cost cost performance of high-rating generator.
The electric current that each wind-driven generator produces is incorporated into the power networks in galvanic mode on the dc bus, and the direct current that is transported to dc bus is powered to DC motor, drives alternating current generator work by DC motor.
It is not very strict that middle-size and small-size blower fan adopts the direct current requirement that has voltage, phase place, phase sequence of being incorporated into the power networks, maneuverable advantage.
Generator in the described wind-driven generator is an alternating current generator, and the alternating current that is sent by each alternating current generator all is incorporated into the power networks on the dc bus through being converted into direct current after the direct current rectification.
Because the generator in the wind-driven generator hangs over cat head, therefore just require the failure rate of generator low, maintenance rate is low, and alternating current generator is with respect to DC generator, have simple in structure, be not easy out of order advantage.
The utility model adopts the three phase rectifier pipe bridge that the AC rectification that wind-driven generator sends is become direct current.
Described dc bus can also be used for the accumulators power supply.
Described threephase alternator also can be by being incorporated into the power networks with electric power network after the transformer transformation.
In sum, advantage of the present utility model is
Since the utility model with the medium and small wind-driven generator of plural platform after self-organizing system is incorporated into the power networks in inside, change into and can produce powerful electric current, then electric current drives motor work thus, and then motor drives threephase generator work thus, the electricity that is sent by threephase generator is incorporated into the power networks with the electrical network of Utilities Electric Co. again, therefore directly do not electrically connect between this wind-driven generator and the power network, but a kind of indirect connection, therefore just can overcome the spread of voltage of wind-driven generator itself, the indefinite and shortcoming that can't be incorporated into the power networks with electric power network of frequency.It is limited simultaneously also to have overcome medium and small wind turbine power generation amount, and the low shortcoming of high-rating generator cost-effectivenes price ratio.The utility model has also adopted alternating current generator in wind-driven generator, and being incorporated into the power networks of internal system carried out in the interchange that alternating current generator sends after the direct current rectification, thereby it has easy operation, is not easy out of order advantage.
Description of drawings
Fig. 1 is the best workflow diagram of implementing of the utility model
Embodiment
Below in conjunction with embodiment the utility model is described in more detail.
Most preferred embodiment
A kind of medium-sized wind powered generator system as shown in Figure 1, it comprises 50 small-sized wind power generator, described generator is the alternating current generator of 5KW, the electricity that described each alternating current generator sends all is incorporated into the power networks after changing direct current into after the rectification of three phase rectifier pipe bridge on the dc bus, has direct current on the dc bus of this moment up to 500V, this direct current drives the DC motor work of 500V550KW, DC motor then is in transmission connection with the threephase alternator of 400V50Hz500KW mutually by shaft coupling, the electricity that sends of threephase alternator then can directly be parallel on the electrical network of Utilities Electric Co.'s correspondent voltage by traditional mode thus, if certainly the voltage that sends of threephase generator is lower than the electrical network of Utilities Electric Co., then also can be by it is incorporated into the power networks with the Utilities Electric Co. electrical network after by step-up transformer mutually.
It is same as the prior art that present embodiment is not stated part.
Claims (6)
1. middle-size and small-size wind powered generator system, it is characterized in that: the small-sized wind power generator that comprises plural platform, the electricity that each small-sized wind power generator produces carries out inside earlier and is incorporated into the power networks behind the bus, drive capacity adds up to total capacity at least more than or equal to plural platform small-sized wind power generator motor work by the electric current after being incorporated into the power networks, motor drives coupled suitable capacity threephase alternator work again, and then power supply that threephase alternator is sent and electric power network are incorporated into the power networks.
2. a kind of middle-size and small-size wind powered generator system according to claim 1, it is characterized in that: the electric current that each wind-driven generator produces is incorporated into the power networks in galvanic mode on the dc bus, the direct current that is transported to dc bus is powered to DC motor, drives alternating current generator work by DC motor.
3. a kind of middle-size and small-size wind powered generator system according to claim 2, it is characterized in that: the generator in the described wind-driven generator is a kind of alternating current generator, and the alternating current that is sent by each alternating current generator all is incorporated into the power networks on the dc bus through being converted into direct current after the direct current rectification.
4. a kind of middle-size and small-size wind powered generator system according to claim 3 is characterized in that: what the described alternating current that alternating current generator is sent changed the direct current employing into is the three phase rectifier pipe bridge.
5. according to any one described a kind of middle-size and small-size wind powered generator system of claim 1 to 4, it is characterized in that: described threephase alternator also can be by being incorporated into the power networks with electric power network after the transformer transformation.
6. a kind of middle-size and small-size wind powered generator system according to claim 5 is characterized in that: described dc bus can also be used for the accumulators power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620072325 CN2924885Y (en) | 2006-04-06 | 2006-04-06 | Middle-small-sized wind-power generator system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620072325 CN2924885Y (en) | 2006-04-06 | 2006-04-06 | Middle-small-sized wind-power generator system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2924885Y true CN2924885Y (en) | 2007-07-18 |
Family
ID=38261312
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620072325 Expired - Fee Related CN2924885Y (en) | 2006-04-06 | 2006-04-06 | Middle-small-sized wind-power generator system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2924885Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102739084A (en) * | 2011-04-12 | 2012-10-17 | 徐夫子 | Electric-energy converted electric-power energy electricity symbiosis apparatus |
-
2006
- 2006-04-06 CN CN 200620072325 patent/CN2924885Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102739084A (en) * | 2011-04-12 | 2012-10-17 | 徐夫子 | Electric-energy converted electric-power energy electricity symbiosis apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070718 |