CN202178507U - Connecting structure of service-power main lead of power station - Google Patents
Connecting structure of service-power main lead of power station Download PDFInfo
- Publication number
- CN202178507U CN202178507U CN201120320244XU CN201120320244U CN202178507U CN 202178507 U CN202178507 U CN 202178507U CN 201120320244X U CN201120320244X U CN 201120320244XU CN 201120320244 U CN201120320244 U CN 201120320244U CN 202178507 U CN202178507 U CN 202178507U
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- bus bar
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- auxiliary bus
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Abstract
The utility model discloses a connecting structure of a service-power main lead of a power station. The connecting structure at least comprises a first unit service-power bus, a second unit service-power bus, a first unit, a second unit and a booster station bus. The first unit service-power bus and the second unit service-power are connected through a communication cable. The connecting structure of the service-power main lead of the power station, disclosed by the utility model, saves a high standby transformer or a startup standby transformer and related structures, such as GIS (Geographic Information System) intervals, cables, accessories, 6kV power distribution units, secondary circuits, civil engineering devices and the like, thereby largely saving engineering investment, saving the operation cost and maintenance cost of the power station and reducing the floor area of the device. The units are of a structure of a standby power, and the connecting structure reduces the loss of a main transformer of the whole power station, thus the service power is reduced.
Description
Technical field
The utility model relates to technical field of power generation, relates in particular to a kind of station service main electrical scheme syndeton of power plant.
Background technology
The station service main electrical scheme of domestic thermal power plant has following two kinds of syndetons usually:
1) as shown in Figure 1, an embodiment of the station service main electrical scheme syndeton in power plant of the prior art comprise that generator 1, generator outlet switch 2, main transformer 3, high factory become 5, and height becomes 6 fully.
2) as shown in Figure 2, another embodiment of the station service main electrical scheme syndeton in power plant of the prior art comprises that generator 1, main transformer 3, high factory become 5, and opens and become 6 fully.
Syndeton need dispose the high device systems that is equipped with change or Qi Beibian in the above-mentioned prior art, has obviously increased equipment investment.The device systems floor space of high change fully or Qi Beibian is bigger, is unfavorable for general layout, and the back operation cost that puts into operation is high.Especially after separating the factory and network, high being equipped with, become or the capacity price of electricity charging problem of Qi Beibian becomes increasingly conspicuous, and the operating cost of power plant is had a negative impact.
Therefore, those skilled in the art's station service main electrical scheme syndeton of being devoted to develop a kind of power plant is to overcome above-mentioned defective.
The utility model content
Because the above-mentioned defective of prior art; The utility model technical problem to be solved provides a kind of station service main electrical scheme syndeton of power plant; Syndeton floor space with to prior art is bigger; Be unfavorable for general layout, construction investment is bigger, and the high defective of the back operation cost that puts into operation is improved.
For realizing above-mentioned purpose; The utility model provides a kind of station service main electrical scheme syndeton of power plant; Said syndeton comprises first unit auxiliary bus bar, second unit auxiliary bus bar, first unit, second unit at least, and the booster stations bus; Said first unit auxiliary bus bar is connected through link cable with said second unit auxiliary bus bar.
Preferably, said first unit comprise first main transformer, be connected on the low-pressure side of said first main transformer first generator, be connected on the first generator outlet switch between said first generator and said first main transformer, and the first high factory change parallelly connected with said first generator; Said first unit auxiliary bus bar is connected with the low-pressure side that the said first high factory becomes, and said booster stations bus is connected with the high-pressure side of said first main transformer.
Preferably, said second unit comprise second main transformer, be connected on the low-pressure side of said second main transformer second generator, be connected on the second generator outlet switch between said second generator and said second main transformer, and the second high factory change parallelly connected with said second generator; Said second unit auxiliary bus bar is connected with the low-pressure side that the said second high factory becomes, and said booster stations bus is connected with the high-pressure side of said second main transformer.
Preferably, said first unit auxiliary bus bar, said second unit auxiliary bus bar are respectively arranged with electric power incoming line cabinet and inlet wire pressure change device.
Preferably, said electric power incoming line cabinet comprises electric power incoming line cabinet commonly used and stand-by power supply incoming line cabinet.
Preferably, all be provided with the fast cutting apparatus of station service on said first unit, said second unit.
Preferably, said link cable is provided with first differential protection and first overcurrent protective device.
Preferably, said syndeton also comprises the 3rd unit, the 3rd unit auxiliary bus bar, the 4th unit, the 4th unit auxiliary bus bar.
Preferably, said second unit auxiliary bus bar, said the 3rd unit auxiliary bus bar all are provided with interconnection switch, protection screen, and identify relay the same period.
Preferably, said second unit auxiliary bus bar, said the 3rd unit auxiliary bus bar all are provided with second differential protection and second overcurrent protective device.
The beneficial effect of the utility model is: the station service main electrical scheme syndeton in the power plant of the utility model is owing to omitted high change or the Qi Beibian of being equipped with; Reach structures such as relevant GIS interval, cable, annex, 6kV power distribution equipment, secondary circuit, civil engineering facility; This syndeton has greatly been practiced thrift construction investment; Save the operation cost and the maintenance cost of power plant, reduced the floor space of equipment.Because the structure of stand-by power supply each other between the unit, this syndeton has reduced the loss that full factory owner becomes, and has reduced station service thus.Owing on unit, set up the fast cutting apparatus of station service, guaranteed unit stand-by power supply reliability.Owing to set up interconnection switch, protection screen, and identified relay the same period, realized the function of the station service of four sections units of a main transformer band.
Below will combine accompanying drawing that the technique effect of design, concrete structure and the generation of the utility model is described further, with purpose, characteristic and the effect of understanding the utility model fully.
Description of drawings
Fig. 1 is the winding diagram of a kind of station service main electrical scheme syndeton in the prior art.
Fig. 2 is the winding diagram of another station service main electrical scheme syndeton in the prior art.
Fig. 3 is the winding diagram of first specific embodiment of the station service main electrical scheme syndeton of the utility model.
Fig. 4 is the winding diagram of second specific embodiment of the station service main electrical scheme syndeton of the utility model.
Embodiment
Embodiment 1:
As shown in Figure 3, station service main electrical scheme syndeton one specific embodiment in the power plant of the utility model, syndeton comprises first unit auxiliary bus bar, second unit auxiliary bus bar, first unit, second unit at least, and the booster stations bus.
First unit, second unit be stand-by power supply each other.Because the structure of stand-by power supply each other between the unit, this syndeton has reduced the loss that full factory owner becomes, and has reduced station service thus.All be provided with the fast cutting apparatus of station service on first unit, second unit, guaranteed unit stand-by power supply reliability.
In the present embodiment, first unit auxiliary bus bar is one section of 6KV, and second unit auxiliary bus bar is two sections of 6KV.One section of 6KV is connected through link cable for two sections with 6KV.Link cable is provided with first differential protection and first overcurrent protective device.
First unit comprise first main transformer 31, be connected on the low-pressure side of first main transformer first generator 11, be connected on the first generator outlet switch 21 between first generator 11 and first main transformer 31, and the first high factories change 51 parallelly connected with first generator 11.One section of 6KV and the first high factory become 51 low-pressure side and are connected, and the booster stations bus is connected with the high-pressure side of first main transformer 31.
Second unit comprise second main transformer 32, be connected on the low-pressure side of second main transformer 32 second generator 12, be connected between second generator 12 and second main transformer 32 the second generator outlet switch 22, and the second high factories change 52 parallelly connected with second generator 12.Two sections of 6KV and the second high factory become 52 low-pressure side and are connected, and the booster stations bus is connected with the high-pressure side of second main transformer 32.
All being provided with electric power incoming line cabinet and inlet wire on two sections of one section of the 6KV, 6KV presses and becomes device.Electric power incoming line cabinet comprises electric power incoming line cabinet commonly used and stand-by power supply incoming line cabinet.Press and become device owing to set up electric power incoming line cabinet, inlet wire, realized the synchronization paralleling function of first unit station service, second unit station service and do not had pressing lock function.
Embodiment 2:
As shown in Figure 4, the structure of present embodiment and embodiment 1 is basic identical, and institute's difference is that syndeton also comprises the 3rd unit, the 3rd unit auxiliary bus bar, the 4th unit, the 4th unit auxiliary bus bar.
In the present embodiment, the 3rd unit auxiliary bus bar is three sections of 6KV, and the 4th unit auxiliary bus bar is four sections of 6KV.First unit, second unit be stand-by power supply each other; The 3rd unit, the 4th unit be stand-by power supply each other.Because the structure of stand-by power supply each other between the unit, this syndeton has reduced the loss that full factory owner becomes, and has reduced station service thus.
First unit comprise first main transformer 31, be connected on the low-pressure side of first main transformer first generator 11, be connected on the first generator outlet switch 21 between first generator 11 and first main transformer 31, and the first high factories change 51 parallelly connected with first generator 11.One section of 6KV and the first high factory become 51 low-pressure side and are connected, and the booster stations bus is connected with the high-pressure side of first main transformer 31.
Second unit comprise second main transformer 32, be connected on the low-pressure side of second main transformer 32 second generator 12, be connected between second generator 12 and second main transformer 32 the second generator outlet switch 22, and the second high factories change 52 parallelly connected with second generator 12.Two sections of 6KV and the second high factory become 52 low-pressure side and are connected, and the booster stations bus is connected with the high-pressure side of second main transformer 32.
The 3rd unit comprise the 3rd main transformer 33, be connected on the low-pressure side of the 3rd main transformer 33 the 3rd generator 13, be connected between the 3rd generator 13 and the 3rd main transformer 33 the 3rd generator outlet switch 23, and the three high factories change 53 parallelly connected with the 3rd generator 13.Three sections of 6KV and the 3rd high factory become 53 low-pressure side and are connected, and the booster stations bus is connected with the high-pressure side of the 3rd main transformer 33.
The 4th unit comprise the 4th main transformer 34, be connected on the low-pressure side of the 4th main transformer 34 the 4th generator 14, be connected between the 4th generator 14 and the 4th main transformer 34 the 4th generator outlet switch 24, and the four high factories change 54 parallelly connected with the 4th generator 14.Four sections of 6KV and the 4th high factory become 54 low-pressure side and are connected, and the booster stations bus is connected with the high-pressure side of the 4th main transformer 34.
Two sections of 6KV, 6KV locate to be provided with second differential protection and second overcurrent protective device for three sections.Two sections of 6KV, 6KV locate to be provided with interconnection switch, protection screen for three sections, and identify relay the same period, have realized the function of the station service of four sections units of a main transformer band.
Owing to omitted high change, the Qi Beibian of being equipped with; Reach structures such as relevant GIS interval, cable, annex, 6kV power distribution equipment, secondary circuit, civil engineering facility; This syndeton has greatly been practiced thrift construction investment, has saved the operation cost and the maintenance cost of power plant, has reduced the floor space of equipment.
More than describe the preferred embodiment of the utility model in detail.Should be appreciated that those of ordinary skill in the art need not creative work and just can make many modifications and variation according to the design of the utility model.Therefore, all technical staff in the art according to the design of the utility model on the basis of existing technology through the available technical scheme of logical analysis, reasoning, or a limited experiment, all should be in determined protection range by claims.
Claims (10)
1. the station service main electrical scheme syndeton in a power plant, it is characterized in that: said syndeton comprises first unit auxiliary bus bar, second unit auxiliary bus bar, first unit, second unit at least, and the booster stations bus; Said first unit auxiliary bus bar is connected through link cable with said second unit auxiliary bus bar.
2. the station service main electrical scheme syndeton in power plant as claimed in claim 1 is characterized in that: said first unit comprise first main transformer, be connected on first generator of the low-pressure side of said first main transformer, be connected on the first generator outlet switch between said first generator and said first main transformer, and the first high factory change parallelly connected with said first generator; Said first unit auxiliary bus bar is connected with the low-pressure side that the said first high factory becomes, and said booster stations bus is connected with the high-pressure side of said first main transformer.
3. according to claim 1 or claim 2 the station service main electrical scheme syndeton in power plant is characterized in that: said second unit comprise second main transformer, be connected on second generator of the low-pressure side of said second main transformer, be connected on the second generator outlet switch between said second generator and said second main transformer, and the second high factory change parallelly connected with said second generator; Said second unit auxiliary bus bar is connected with the low-pressure side that the said second high factory becomes, and said booster stations bus is connected with the high-pressure side of said second main transformer.
4. the station service main electrical scheme syndeton in power plant as claimed in claim 3 is characterized in that: said first unit auxiliary bus bar, said second unit auxiliary bus bar are respectively arranged with electric power incoming line cabinet and inlet wire and press and become device.
5. the station service main electrical scheme syndeton in power plant as claimed in claim 4 is characterized in that: said electric power incoming line cabinet comprises electric power incoming line cabinet commonly used and stand-by power supply incoming line cabinet.
6. the station service main electrical scheme syndeton in power plant as claimed in claim 3, it is characterized in that: said first unit, said second unit are respectively arranged with the fast cutting apparatus of station service.
7. the station service main electrical scheme syndeton in power plant as claimed in claim 3, it is characterized in that: said link cable is provided with first differential protection and first overcurrent protective device.
8. the station service main electrical scheme syndeton in power plant as claimed in claim 3, it is characterized in that: said syndeton also comprises the 3rd unit, the 3rd unit auxiliary bus bar, the 4th unit, the 4th unit auxiliary bus bar.
9. the station service main electrical scheme syndeton in power plant as claimed in claim 8, it is characterized in that: said second unit auxiliary bus bar, said the 3rd unit auxiliary bus bar all are provided with interconnection switch, protection screen, and identify relay the same period.
10. the station service main electrical scheme syndeton in power plant as claimed in claim 9, it is characterized in that: said second unit auxiliary bus bar, said the 3rd unit auxiliary bus bar all are provided with second differential protection and second overcurrent protective device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120320244XU CN202178507U (en) | 2011-08-30 | 2011-08-30 | Connecting structure of service-power main lead of power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120320244XU CN202178507U (en) | 2011-08-30 | 2011-08-30 | Connecting structure of service-power main lead of power station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202178507U true CN202178507U (en) | 2012-03-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120320244XU Expired - Lifetime CN202178507U (en) | 2011-08-30 | 2011-08-30 | Connecting structure of service-power main lead of power station |
Country Status (1)
| Country | Link |
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| CN (1) | CN202178507U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107171363A (en) * | 2017-07-07 | 2017-09-15 | 北京生态经济科技有限公司 | The multi-energies hybrid power generating system of Thermal generation unit and generation of electricity by new energy unit |
| CN110086248A (en) * | 2019-05-15 | 2019-08-02 | 中国能源建设集团湖南省电力设计院有限公司 | One kind being used for grid type power plant auxiliary system |
| CN111431170A (en) * | 2020-03-17 | 2020-07-17 | 神华神东电力有限责任公司 | Factory power system of power plant |
-
2011
- 2011-08-30 CN CN201120320244XU patent/CN202178507U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107171363A (en) * | 2017-07-07 | 2017-09-15 | 北京生态经济科技有限公司 | The multi-energies hybrid power generating system of Thermal generation unit and generation of electricity by new energy unit |
| CN110086248A (en) * | 2019-05-15 | 2019-08-02 | 中国能源建设集团湖南省电力设计院有限公司 | One kind being used for grid type power plant auxiliary system |
| CN110086248B (en) * | 2019-05-15 | 2023-05-26 | 中国能源建设集团湖南省电力设计院有限公司 | Power station service system for grid-connected power plant |
| CN111431170A (en) * | 2020-03-17 | 2020-07-17 | 神华神东电力有限责任公司 | Factory power system of power plant |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120328 |
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| CX01 | Expiry of patent term |