CN201298734Y - Main electrical wiring for starting fuel gas and steam combined cycle generator set in two-drive-one mode with variable frequency - Google Patents
Main electrical wiring for starting fuel gas and steam combined cycle generator set in two-drive-one mode with variable frequency Download PDFInfo
- Publication number
- CN201298734Y CN201298734Y CNU2008201676153U CN200820167615U CN201298734Y CN 201298734 Y CN201298734 Y CN 201298734Y CN U2008201676153 U CNU2008201676153 U CN U2008201676153U CN 200820167615 U CN200820167615 U CN 200820167615U CN 201298734 Y CN201298734 Y CN 201298734Y
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- voltage
- fuel gas
- electrical wiring
- transformers
- variable frequency
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- Expired - Fee Related
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- 239000002737 fuel gas Substances 0.000 title abstract description 7
- 238000009429 electrical wiring Methods 0.000 title abstract 5
- 230000005611 electricity Effects 0.000 claims description 13
- 238000009434 installation Methods 0.000 claims description 4
- 239000007789 gas Substances 0.000 description 10
- 238000002485 combustion reaction Methods 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
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Abstract
The utility model discloses a main electrical wiring for starting fuel gas and steam combined cycle generator set in two-drive-one mode with variable frequency. The main electrical wiring comprises two fuel gas generators and a steam turbine generator, the fuel gas generators and the steam turbine generator in the main electrical wiring are connected into a high-voltage electrical distribution device through the main transformers respectively, low-voltage sides of the two transformers of the fuel gas generators are in branch connection with on load voltage adjusting high-voltage unit transformers respectively, the on load voltage adjusting high-voltage unit transformers are connected with two segments of medium-voltage bus bars through medium-voltage bus bar incoming circuit breakers respectively, and the two segments of medium-voltage bus bars are connected through a communication circuit breaker; generator outlet circuit breakers are arranged at the outlets of the two fuel gas generators; the main electrical wiring reduces the number of the high-voltage starting/standby transformers, the corresponding space of the high-voltage electrical distribution device is left out, the investment is reduced, the occupied land of the device is reduced, and the switching operation of auxiliary power of the operators to switch a starting/standby state to a normal operating state can be reduced.
Description
Technical field
The utility model relates to a kind of electrical main connecting wire of power plant combustion machine unit, in particular, relate to a kind of power plant variable frequency starting two and drag the electrical main connecting wire of a gas-steam combined Cycle Unit.
Background technology
The development of China's electric utility is at present advanced by leaps and bounds, " under the Strategic Context of West-east Gas; natural gas line has been built many fuel gas generation units along the line successively; drag a gas-steam combined Cycle Unit for interim variable frequency starting two, the problem of the electrical main connecting wire saving investment how to optimize just is placed in front of us in country.
What routine adopted is that the whole series two drag a gas-steam combined Cycle Unit that a high voltage startup/spare transformer is set, every combustion gas unit established a main transformer, the change of No-load changer high pressure factory is propped up by the main transformer low-pressure side and is connect, give one section station-service working bus bar power supply respectively, on-load voltage regulation high voltage startup spare transformer is connected to working bus bar for starting or standby when standby.Because variable frequency starting combustion machine unit has adopted the variable frequency starting mode, so be provided with generator outlet circuit breaker (being called for short GCB) at the generator outlet place, therefore according to routine special high-pressure startup/spare transformer being set will increase investment.
Summary of the invention
The purpose of this utility model is to overcome the deficiency of above-mentioned existence, and provide a kind of making full use of to be installed in the generator outlet circuit breaker, special-purpose startup spare transformer is not set, thereby the variable frequency starting two that has reduced space hold and investment drags the electrical main connecting wire of a gas-steam combined Cycle Unit.
The utility model is achieved by the following technical solution: it comprises two gas electricity generators, a steam turbine generator, two gas electricity generators and steam turbine generator insert high voltage distribution installation by main transformer separately respectively in the described electrical main connecting wire, the low-pressure side of two main transformers of two gas electricity generators is all propped up and is connect an on-load voltage regulation high pressure factory change, this on-load voltage regulation high pressure factory is flexible to press the bus lead-in circuit breaker to be connected to respectively in two sections in crossing to press bus, presses bus to link to each other by network interconnecting circuit in two sections.
After the outlet of described two gas electricity generators is provided with the generator outlet circuit breaker, startup/spare transformer is not set, two high pressure factories become standby each other, and the steam turbine generator is not provided with high pressure factory separately and becomes.
The utility model adopts variable frequency starting two to drag a gas-steam combined Cycle Unit electrical main connecting wire, cancelled special high-pressure startup/spare transformer, two on-load voltage regulation high pressure factories are set to be become, suitably increase the capacity that high pressure factory becomes, make two high pressure factories become standby each other, thereby effectively compressed investment, dwindled the electric equipment floor space, also reduced station service handover operation of operations staff simultaneously.
Compared with prior art, the beneficial effects of the utility model are: at first, reduced high voltage startup/spare transformer, saved corresponding high voltage distribution installation at interval, thereby reduced investment, secondly reduced the equipment occupation of land, can reduce startup/stand-by state and switch to operations staff's station service handover operation under the normal operating conditions.
Description of drawings
Fig. 1 is the utility model structural representation.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail.
The utility model includes that two gas electricity generators 1 and steam turbine generator 2, three main transformers 3, two on-load voltage regulation high pressure factories become 4, middle pressure bus lead-in circuit breaker 5, middle pressure bus-tie circuit breaker 6, middle pressure auxiliary bus bar 7, generator outlet circuit breaker 8 etc.Two gas electricity generators 1 and steam turbine generator 2 insert high voltage distribution installations by main transformer 3 separately respectively in the described electrical main connecting wire, the low-pressure side of two main transformers 3 of two gas electricity generators 1 is all propped up and is connect an on-load voltage regulation high pressure factory change 4, this on-load voltage regulation high pressure factory becomes 4 and is connected to respectively to press in two sections in 7, two sections of the buses by middle pressure bus lead-in circuit breaker 5 and presses bus to link to each other by network interconnecting circuit 6.
As a kind of improvement, two combustion machine units are respectively established an on-load voltage regulation high-pressure work factory and are become 4, and as the working power of high pressure auxiliary bus bar, the steam turbine generator is not provided with high-pressure work factory separately and becomes, and load is installed in respectively in two sections gas electricity generators and presses under the active section.This electrical main connecting wire is when a high pressure factory change or main transformer fault or maintenance, the lead-in circuit breaker 5 of this section bus disconnects, press bus-tie circuit breaker 6 in closing, power supply switches to non-faulty section bus 7, and non-faulty section high pressure factory becomes 4 and presses bus 7 power supplies in giving two sections simultaneously; When the combustion machine started, generator outlet circuit breaker 8 was in off-state, and this moment, station service was pressed auxiliary bus bar by main transformer, the change of high pressure factory in delivering to.
Described variable frequency starting two drags the electrical main connecting wire of a gas-steam combined Cycle Unit, after the outlet that it is characterized in that described two gas electricity generators 1 is provided with generator outlet circuit breaker 8, startup/spare transformer is not set, two high pressure factory changes 4 are standby each other, and steam turbine generator 2 is not provided with high pressure factory separately and becomes.
At last, it should be noted that above what enumerate only is specific embodiment of the utility model.Obviously, the utility model is not limited to above embodiment, and a lot of distortion can also be arranged.All distortion that those of ordinary skill in the art can directly derive or associate from the disclosed content of the utility model all should be thought protection range of the present utility model.
Claims (2)
1, a kind of variable frequency starting two drags the electrical main connecting wire of a gas-steam combined Cycle Unit, it comprises two gas electricity generators (1), a steam turbine generator (2), it is characterized in that in the described electrical main connecting wire that two gas electricity generators (1) and a steam turbine generator (2) insert high voltage distribution installation by main transformer (3) separately respectively, the low-pressure side of two main transformers (3) of two gas electricity generators (1) is all propped up and is connect an on-load voltage regulation high pressure factory change (4), this on-load voltage regulation high pressure factory becomes (4) and is connected to respectively by middle pressure bus lead-in circuit breaker (5) and presses bus (7) in two sections, presses bus continuous by network interconnecting circuit (6) in two sections.
2, variable frequency starting two according to claim 1 drags the electrical main connecting wire of a gas-steam combined Cycle Unit, after the outlet that it is characterized in that described two gas electricity generators (1) is provided with generator outlet circuit breaker (8), startup/spare transformer is not set, two high pressure factory changes (4) are standby each other, and steam turbine generator (2) is not provided with high pressure factory separately and becomes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201676153U CN201298734Y (en) | 2008-11-17 | 2008-11-17 | Main electrical wiring for starting fuel gas and steam combined cycle generator set in two-drive-one mode with variable frequency |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201676153U CN201298734Y (en) | 2008-11-17 | 2008-11-17 | Main electrical wiring for starting fuel gas and steam combined cycle generator set in two-drive-one mode with variable frequency |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201298734Y true CN201298734Y (en) | 2009-08-26 |
Family
ID=41044720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201676153U Expired - Fee Related CN201298734Y (en) | 2008-11-17 | 2008-11-17 | Main electrical wiring for starting fuel gas and steam combined cycle generator set in two-drive-one mode with variable frequency |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201298734Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102611192A (en) * | 2012-04-19 | 2012-07-25 | 中水北方勘测设计研究有限责任公司 | Power supply guiding and connecting device for middle-sized peak shaving hydropower station |
| CN110401227A (en) * | 2019-03-19 | 2019-11-01 | 中电投电力工程有限公司 | Debugging method for simultaneous phasing test of gas-steam combined cycle unit |
| CN112311016A (en) * | 2020-11-19 | 2021-02-02 | 西安热工研究院有限公司 | Black start system and method for single-bus subsection gas turbine power station with bypass bus connection |
| CN112332225A (en) * | 2020-11-12 | 2021-02-05 | 上海惠生海洋工程有限公司 | 230kV and 115kV double-voltage output system of mobile floating combined cycle power generation ship |
-
2008
- 2008-11-17 CN CNU2008201676153U patent/CN201298734Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102611192A (en) * | 2012-04-19 | 2012-07-25 | 中水北方勘测设计研究有限责任公司 | Power supply guiding and connecting device for middle-sized peak shaving hydropower station |
| CN110401227A (en) * | 2019-03-19 | 2019-11-01 | 中电投电力工程有限公司 | Debugging method for simultaneous phasing test of gas-steam combined cycle unit |
| CN112332225A (en) * | 2020-11-12 | 2021-02-05 | 上海惠生海洋工程有限公司 | 230kV and 115kV double-voltage output system of mobile floating combined cycle power generation ship |
| CN112311016A (en) * | 2020-11-19 | 2021-02-02 | 西安热工研究院有限公司 | Black start system and method for single-bus subsection gas turbine power station with bypass bus connection |
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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: 20090826 Termination date: 20161117 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |