CN208174294U - A kind of generator-transformer group circuit of gas-steam combined cycle set - Google Patents
A kind of generator-transformer group circuit of gas-steam combined cycle set Download PDFInfo
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- CN208174294U CN208174294U CN201820809434.XU CN201820809434U CN208174294U CN 208174294 U CN208174294 U CN 208174294U CN 201820809434 U CN201820809434 U CN 201820809434U CN 208174294 U CN208174294 U CN 208174294U
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Abstract
The utility model provides a kind of generator-transformer group circuit of gas-steam combined cycle set, fuel engine power generation machine, steam turbine generator, main transformer, HV Auxiliary Transformer, starting/spare transformer and high voltage distribution installation, wherein disconnecting switch is provided between fuel engine power generation machine and main transformer, the first breaker is provided between steam turbine generator and main transformer, the second breaker, starting/third breaker is provided between spare transformer and high voltage distribution installation are provided between main transformer and high voltage distribution installation.The utility model is particularly suitable for the Gas-steam Combined Cycle gas-fired station for heat-clod cogeneration of not depth peak regulation.The enlarging unit connection scheme that the more conventional fuel engine power generation machine of the connection plan and steam turbine generator outlet are respectively provided with breaker reduces a set of fuel engine power generation machine outlet breaker, so that the usage amount of cost higher device is saved, but also general layout is more flexible.
Description
Technical field
The utility model relates to the generator-transformer group circuit of gas-steam combined cycle set, which is suitable for
The not Gas-steam Combined Cycle gas-fired station for heat-clod cogeneration of depth peak regulation.
Background technique
Due to efficient height of fuel engine power generation equipment, low cost, environmental-friendly, land occupation less and the advantages that regulation is flexible, fire
Gas steam combined cycle system has become countries in the world as the Poly-generation engineering of host using Gas Turbine Generating Units and is
The generation technology realizing energy-saving and emission-reduction and actively developing.
Currently, when the electrical main connecting wire of fuel engine power generation machine uses generator-transformer group enlarging unit connection, fuel engine power generation
Machine and steam turbine generator outlet are respectively provided with breaker, and the breaker cost is high, and occupied area is larger, therefore needs one kind
The new mode of connection solves the above problems.
Utility model content
The utility model embodiment provides a kind of generator-transformer group circuit of gas-steam combined cycle set,
Solve because being respectively provided with breaker in fuel engine power generation machine and steam turbine generator outlet, caused by cost height, and occupied area
Larger problem.
The generator-transformer group circuit of gas-steam combined cycle set provided by the embodiment of the utility model includes：
Fuel engine power generation machine, steam turbine generator, main transformer, HV Auxiliary Transformer, starting/spare transformer and high voltage distribution installation,
Wherein the fuel engine power generation machine and the steam turbine generator are electrically connected with the low-pressure side of the main transformer respectively, the main transformer pressure
The high-pressure side of device and the high-pressure side of the starting/spare transformer are electrically connected with the high voltage distribution installation respectively, in the combustion
It is provided with disconnecting switch between machine generator and the main transformer, is set between the steam turbine generator and the main transformer
It is equipped with the first breaker, the second breaker, the starting/standby are provided between the main transformer and the high voltage distribution installation
With being provided with third breaker between transformer and the high voltage distribution installation, the HV Auxiliary Transformer and the main transformer pressure
The low-pressure side steam turbine generator branch of device is electrically connected.
Above-mentioned generator-transformer group circuit first starts fuel engine power generation machine when gas-steam combined cycle set starts
After start steam turbine generator；When orderly closedown, first stop brennschluss machine generator after steam turbine generator.The outlet of fuel engine power generation machine is not set
Breaker, settable disconnecting switch are set, breaker is arranged in steam turbine generator outlet, and station-service working power is exported from steam turbine generator
Drawn by HV Auxiliary Transformer and connect, and is provided with starting/spare transformer.
The more original conventional fuel engine power generation machine outlet of the utility model and steam turbine generator outlet are respectively provided with the power generation of breaker
Machine-transformer group enlarging unit connection saves the fuel engine power generation machine outlet breaker of a set of price costly, to save throwing
Money, a set of combined cycle unit especially biggish to capacity can reduce investment outlay members up to a million, while also save fuel engine power generation machine
The occupied area in region.
The utility model is particularly suitable for the Gas-steam Combined Cycle combustion gas electricity for heat-clod cogeneration of not depth peak regulation
It stands.
Detailed description of the invention
In order to illustrate more clearly of the technical solution of the utility model embodiment, the utility model embodiment will be retouched below
Attached drawing needed in stating is briefly described, it should be apparent that, the accompanying drawings in the following description is only the utility model
Some embodiments for those of ordinary skill in the art without creative efforts, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 is a kind of structural representation of the generator-transformer group circuit of conventional gas-steam combined cycle set
Figure；
Fig. 2 is a kind of generator-transformer group of gas-steam combined cycle set provided by the embodiment of the utility model
The structural schematic diagram of circuit.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
It clearly and completely describes, it is clear that the embodiments are a part of the embodiments of the present invention, rather than whole implementation
Example.Based on the embodiments of the present invention, those of ordinary skill in the art are obtained without making creative work
The every other embodiment obtained, fall within the protection scope of the utility model.
Referring to Fig. 1, a kind of generator-transformer group electricity of conventional gas-steam combined cycle set is shown in figure
Road, including：Fuel engine power generation machine 1, steam turbine generator 2, main transformer 3, HV Auxiliary Transformer 4,5 and of starting/spare transformer
High voltage distribution installation 6, wherein fuel engine power generation machine 1 and steam turbine generator 2 are electrically connected with the low-pressure side of main transformer 3 respectively, main transformer
The high-pressure side of depressor 3 and the high-pressure side of starting/spare transformer 5 are electrically connected with high voltage distribution installation 6 respectively, in fuel engine power generation machine
It is provided with the 4th breaker 71 between 1 and main transformer 3, the first open circuit is provided between steam turbine generator 2 and main transformer 3
Device 8 is provided with the second breaker 9, starting/spare transformer 5 and high voltage power distribution between main transformer 3 and high voltage distribution installation 6
Third breaker 10, the low-pressure side steam turbine generator branch of HV Auxiliary Transformer 4 and main transformer 3 are provided between device 6
Electrical connection.
Under application scenes, gas-steam combined cycle set does not need frequent start and stop, therefore, there is no need to frequency
Numerous above-mentioned the 4th breaker 71 being arranged between fuel engine power generation machine 1 and main transformer 3 of operation, leads to the 4th breaker 71
Utilization rate is lower.It since the cost of breaker is high, and takes up a large area, lower utilization rate will lead to unnecessary cost
Investment.
Referring to fig. 2, the generator-transformer group of gas-steam combined cycle set provided by the embodiment of the utility model
Circuit includes：Fuel engine power generation machine 1, steam turbine generator 2, main transformer 3, HV Auxiliary Transformer 4,5 and of starting/spare transformer
High voltage distribution installation 6, wherein fuel engine power generation machine 1 and steam turbine generator 2 are electrically connected with the low-pressure side of main transformer 3 respectively, main transformer
The high-pressure side of depressor 3 and the high-pressure side of starting/spare transformer 5 are electrically connected with high voltage distribution installation 6 respectively, in fuel engine power generation machine
It is provided with disconnecting switch 72 between 1 and main transformer 3, the first breaker is provided between steam turbine generator 2 and main transformer 3
8, the second breaker 9, starting/spare transformer 5 and high voltage power distribution dress are provided between main transformer 3 and high voltage distribution installation 6
It sets and is provided with third breaker 10 between 6, the low-pressure side steam turbine generator branch electricity of HV Auxiliary Transformer 4 and main transformer 3
Connection.
Application method：
When gas-steam combined cycle set normally starts, starting/spare transformer 5 is that fuel engine power generation machine 1 provides starting
Power supply.After fuel engine power generation machine 1 starts, on high-tension side second breaker 9 of main transformer 3 is closed a floodgate, the grid-connected hair of fuel engine power generation machine 1 is made
Electricity starts steam turbine generator 2 so that HV Auxiliary Transformer 4 be made to charge, and the first breaker 8 that steam turbine generator 2 is exported closes
Lock, steam turbine generator 2 generate electricity by way of merging two or more grid systems.
When gas-steam combined cycle set orderly closedown, the first breaker 8 that steam turbine generator 2 exports first is disconnected, is made
Steam turbine generator 2 is first shut down, and on high-tension side second breaker 9 of main transformer is then turned off, and fuel engine power generation machine is out of service.
It, can be in fuel engine power generation machine if the steam turbine generator 2 is connect with another set of combined cycle unit by main pipe
After out of service, disconnecting switch 72 is opened, the steam turbine generator 2 is made to drive operation power generation by another set of combined cycle unit,
In, the disconnecting switch 72 is used to connect with another set of combined cycle unit by main pipe in steam turbine generator 2, and in combustion engine
After generator is out of service, the steam turbine generator 2 is made to drive operation power generation by another set of combined cycle unit.
Using the generator-transformer group circuit of gas-steam combined cycle set provided by the utility model, Neng Gouwei
Every suit combined cycle unit saves one group of breaker that fuel engine power generation machine exit is arranged in, and has significantly saved cost, together
When also save occupied area.
The embodiments of the present invention are described above in conjunction with attached drawing, but the utility model is not limited to
The specific embodiment stated, the above mentioned embodiment is only schematical, rather than restrictive, this field it is common
Technical staff is not departing from the utility model aims and scope of the claimed protection situation under the enlightenment of the utility model
Under, many forms can be also made, are belonged within the protection of the utility model.
Claims (1)
1. a kind of generator-transformer group circuit of gas-steam combined cycle set, which is characterized in that including：Fuel engine power generation
Machine, steam turbine generator, main transformer, HV Auxiliary Transformer, starting/spare transformer and high voltage distribution installation, wherein described
Fuel engine power generation machine and the steam turbine generator are electrically connected with the low-pressure side of the main transformer respectively, the high pressure of the main transformer
Side and the high-pressure side of the starting/spare transformer are electrically connected with the high voltage distribution installation respectively, in the fuel engine power generation machine
It is provided with disconnecting switch between the main transformer, is provided with first between the steam turbine generator and the main transformer
Breaker is provided with the second breaker, the starting/spare transformer between the main transformer and the high voltage distribution installation
Third breaker, the low pressure of the HV Auxiliary Transformer and the main transformer are provided between the high voltage distribution installation
The electrical connection of side steam turbine generator branch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820809434.XU CN208174294U (en) | 2018-05-28 | 2018-05-28 | A kind of generator-transformer group circuit of gas-steam combined cycle set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820809434.XU CN208174294U (en) | 2018-05-28 | 2018-05-28 | A kind of generator-transformer group circuit of gas-steam combined cycle set |
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| Publication Number | Publication Date |
|---|---|
| CN208174294U true CN208174294U (en) | 2018-11-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820809434.XU Active CN208174294U (en) | 2018-05-28 | 2018-05-28 | A kind of generator-transformer group circuit of gas-steam combined cycle set |
Country Status (1)
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| CN (1) | CN208174294U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN112290669A (en) * | 2020-11-16 | 2021-01-29 | 西安热工研究院有限公司 | Electrical system for combined black start of 9E and 9F gas turbine and working method thereof |
-
2018
- 2018-05-28 CN CN201820809434.XU patent/CN208174294U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN112290669A (en) * | 2020-11-16 | 2021-01-29 | 西安热工研究院有限公司 | Electrical system for combined black start of 9E and 9F gas turbine and working method thereof |
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