CN205791569U - A kind of generating set grid-connected system being applied to new power plant construction - Google Patents
A kind of generating set grid-connected system being applied to new power plant construction Download PDFInfo
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- CN205791569U CN205791569U CN201620680229.9U CN201620680229U CN205791569U CN 205791569 U CN205791569 U CN 205791569U CN 201620680229 U CN201620680229 U CN 201620680229U CN 205791569 U CN205791569 U CN 205791569U
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- generating set
- power plant
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- new power
- plant construction
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Abstract
The utility model discloses a kind of generating set grid-connected system being applied to new power plant construction, it is characterized in that, including generating set, generator outlet chopper, high impedance booster transformer and service entrance switch, the outlet of described generating set is connected to the grid through generator outlet chopper, high impedance booster transformer and service entrance switch successively through enclosed busbar.This utility model uses high impedance booster transformer to replace common booster transformer and current-limiting reactor, do not only reach the purpose of limiting short-circuit current, reduce whole power plant power attenuation, and reduce equipment investment by cancelling grid-connected current-limiting reactor, decrease the construction cost of building, improve economy of power plant benefit.
Description
Technical field
This utility model relates to a kind of grid-connecting apparatus, and a kind of generating set being applied to new power plant construction is grid-connected
System, belongs to distribution technique field.
Background technology
Along with the continuous enlarging of electric power networks, net capacity is continuously increased, and grid short circuit electric current is continuously increased, for ensureing electricity
The existing electrical equipment short circuit current breaking capacity of net meets new power plant construction requirement, it is necessary to limits new power plant construction generating set and injects electricity
The short circuit current of net.Generally, current-limiting reactor need to be set up on the grid-connected circuit of power plant to limit this short circuit current.
Inject the short circuit current of electrical network bus for limiting generating set, need to install current-limiting reactor additional at power plant's outgoing line side
(parameter of reactor: reactance Rate 16%, rated voltage 35kV, rated current 2kA).Set up grid-connected current-limiting reactor there will be with
Lower problem is:
1, add equipment investment, add the investment of grid-connected reactor in-house facility.
2, this power plant active power loss and reactive power loss are increased.
3, set up building, for laying current-limiting reactor, a current-limiting reactor room need to be built, often organize grid-connected current-limiting reactor
Device typically need to set up the building of area about 85 square metres.
Utility model content
For the deficiency overcoming above-mentioned prior art to exist, this utility model provides a kind of generating being applied to new power plant construction
Set grid-connection system, it can not only reach the purpose of limiting short-circuit current, and can reduce equipment investment, reduce construction and build
Build thing expense.
The technical scheme in the invention for solving the technical problem is: a kind of electromotor being applied to new power plant construction
Group grid-connected system, is characterized in that, including generating set, generator outlet chopper, high impedance booster transformer and service entrance switch,
The outlet of described generating set through enclosed busbar successively through generator outlet chopper, high impedance booster transformer and service entrance switch
It is connected to the grid.
Preferably, described generating set includes Turbo-generator Set and/or wind power generating set.
Preferably, described service entrance switch includes vacuum circuit breaker.
Preferably, described high impedance booster transformer includes transformer core, high-tension coil, intermediate voltage winding, voltage regulation coil
And low-voltage coil, described transformer core is three-phase and five-pole structure, and transformer fe arranges the most from inside to outside and is disposed with height
Line ball circle, intermediate voltage winding, voltage regulation coil and low-voltage coil, ensure the requirement of product impedance from structure.
The beneficial effects of the utility model are as follows:
This utility model uses high impedance booster transformer to replace common booster transformer and current-limiting reactor, does not only reaches
The purpose of limiting short-circuit current, reduces whole power plant power attenuation, and reduces by cancelling grid-connected current-limiting reactor
Equipment investment, decreases the construction cost of building, improves economy of power plant benefit.
The transformer core of high impedance booster transformer of the present utility model uses three-phase and five-pole structure, and in transformer fe
Arrangement sets gradually high-tension coil, intermediate voltage winding, voltage regulation coil and low-voltage coil the most from inside to outside, is so meeting transformator
While performance parameter requires, it is effectively increased short-circuit impedance and the anti-short circuit capability of transformator, reduces load during operation
Loss, has that volume is little, lightweight, the features such as low is lost.
Accompanying drawing explanation
Below in conjunction with the accompanying drawings this utility model is further illustrated:
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the wiring schematic diagram of prior art；
Fig. 3 is wiring schematic diagram of the present utility model；
Fig. 4 is the structural representation of high impedance booster transformer described in the utility model；
In figure, 1 transformer core, 2 high-tension coils, 3 intermediate voltage windings, 4 voltage regulation coils, 5 low-voltage coils.
Detailed description of the invention
For the technical characterstic of this programme can be clearly described, below by detailed description of the invention, and combine its accompanying drawing, to this reality
It is described in detail with novel.Following disclosure provides many different embodiments or example is of the present utility model for realizing
Different structure.In order to simplify disclosure of the present utility model, hereinafter parts and setting to specific examples are described.Additionally,
This utility model can in different examples repeat reference numerals and/or letter.This repetition is to simplify and clearly mesh
, itself do not indicate the relation between discussed various embodiment and/or setting.It should be noted that, illustrated in the accompanying drawings
Parts are not drawn necessarily to scale.This utility model eliminates the description to known assemblies and treatment technology and process to avoid not
Limit this utility model necessarily.
As shown in figures 1 and 3, a kind of generating set grid-connected system being applied to new power plant construction of the present utility model, its bag
Including generating set, generator outlet chopper, high impedance booster transformer and service entrance switch, the outlet of described generating set is through envelope
Close bus to be connected to the grid through generator outlet chopper, high impedance booster transformer and service entrance switch successively.
Preferably, described generating set includes Turbo-generator Set and/or wind power generating set.
Preferably, described service entrance switch uses vacuum circuit breaker.
Fig. 2 is the wiring schematic diagram of prior art, during as in figure 2 it is shown, use existing scheme, and need to be at new power plant construction netting twine
Set up current-limiting reactor on road, reached the purpose of limiting short-circuit current by the current-limiting reactor installed additional in main transformer high-pressure side.
But, existing scheme also exists to be needed to increase equipment investment, increase active power loss and reactive power loss and set up building
The problem of thing, for problem above, this utility model uses high impedance booster transformer replace common booster transformer and take
Disappeared current-limiting reactor, as it is shown on figure 3, after so existing scheme being improved design, reducing grid-connected current-limiting reactor
Limit new power plant construction generating set simultaneously the most well and inject the short circuit current of electrical network.
Generating set of the present utility model is connected with generator outlet chopper by enclosed busbar, generator outlet open circuit
Device is connected with the low-pressure side of high impedance booster transformer, and the high-pressure side of high impedance booster transformer is incorporated to electricity through service entrance switch
Net.Circuit between the low-pressure side of generator outlet chopper and high impedance booster transformer can also arrange electromotor go out
Mouth disconnecting switch.This utility model uses high impedance booster transformer to replace common booster transformer and current-limiting reactor, not only
Reach the purpose of limiting short-circuit current, reduced whole power plant power attenuation, and drop by cancelling grid-connected current-limiting reactor
Low equipment investment, decreases the construction cost of building, improves economy of power plant benefit.
As shown in Figure 4, high impedance booster transformer described in the utility model include transformer core 1, high-tension coil 2, in
Line ball circle 3, voltage regulation coil 4 and low-voltage coil 5, described transformer core 1 is three-phase and five-pole structure, and core-lamination stack uses six grades of rank
Ladder stepping bridging arrangement, on transformer core 1, arrangement is disposed with high-tension coil 2, intermediate voltage winding 3, line pressure regulator from inside to outside
Circle 4 and low-voltage coil 5.
The transformer core of high impedance booster transformer of the present utility model uses three-phase and five-pole structure, and in transformer fe
Arrangement sets gradually high-tension coil, intermediate voltage winding, voltage regulation coil and low-voltage coil the most from inside to outside, is so meeting transformator
While performance parameter requires, it is effectively increased short-circuit impedance and the anti-short circuit capability of transformator, reduces load during operation
Loss, has that volume is little, lightweight, the features such as low is lost.
The above is preferred implementation of the present utility model, comes for those skilled in the art
Say, on the premise of without departing from this utility model principle, it is also possible to make some improvements and modifications, these improvements and modifications also by
It is considered as protection domain of the present utility model.
Claims (6)
1. it is applied to a generating set grid-connected system for new power plant construction, it is characterized in that, break including generating set, generator outlet
Road device, high impedance booster transformer and service entrance switch, the outlet of described generating set through enclosed busbar successively through generator outlet
Chopper, high impedance booster transformer and service entrance switch are connected to the grid.
A kind of generating set grid-connected system being applied to new power plant construction the most according to claim 1, is characterized in that, described
Group of motors includes Turbo-generator Set.
A kind of generating set grid-connected system being applied to new power plant construction the most according to claim 1, is characterized in that, described
Group of motors includes wind power generating set.
A kind of generating set grid-connected system being applied to new power plant construction the most according to claim 1, is characterized in that, described
Group of motors includes Turbo-generator Set and wind power generating set.
A kind of generating set grid-connected system being applied to new power plant construction the most according to claim 1, is characterized in that, described in enter
Wiretap includes vacuum circuit breaker.
6., according to a kind of generating set grid-connected system being applied to new power plant construction described in claim 1 to 5 any one, it is special
Levying and be, described high impedance booster transformer includes transformer core, high-tension coil, intermediate voltage winding, voltage regulation coil and low-voltage coil,
Described transformer core is three-phase and five-pole structure, and transformer fe arranges the most from inside to outside and is disposed with high-tension coil, middle pressure
Coil, voltage regulation coil and low-voltage coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620680229.9U CN205791569U (en) | 2016-06-30 | 2016-06-30 | A kind of generating set grid-connected system being applied to new power plant construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620680229.9U CN205791569U (en) | 2016-06-30 | 2016-06-30 | A kind of generating set grid-connected system being applied to new power plant construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205791569U true CN205791569U (en) | 2016-12-07 |
Family
ID=58126509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620680229.9U Expired - Fee Related CN205791569U (en) | 2016-06-30 | 2016-06-30 | A kind of generating set grid-connected system being applied to new power plant construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205791569U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109672222A (en) * | 2018-12-26 | 2019-04-23 | 山东电力工程咨询院有限公司 | Grid-connected system and method based on two-shipper heat regenerative system with power-balance generator |
-
2016
- 2016-06-30 CN CN201620680229.9U patent/CN205791569U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109672222A (en) * | 2018-12-26 | 2019-04-23 | 山东电力工程咨询院有限公司 | Grid-connected system and method based on two-shipper heat regenerative system with power-balance generator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161207 Termination date: 20200630 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |