CN102472118A - Power plant and method for operating a power plant - Google Patents
Power plant and method for operating a power plant Download PDFInfo
- Publication number
- CN102472118A CN102472118A CN2010800356919A CN201080035691A CN102472118A CN 102472118 A CN102472118 A CN 102472118A CN 2010800356919 A CN2010800356919 A CN 2010800356919A CN 201080035691 A CN201080035691 A CN 201080035691A CN 102472118 A CN102472118 A CN 102472118A
- Authority
- CN
- China
- Prior art keywords
- power plant
- generator
- plant equipment
- electric consumer
- turbo machine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K13/00—General layout or general methods of operation of complete plants
- F01K13/02—Controlling, e.g. stopping or starting
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Eletrric Generators (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
- Control Of Turbines (AREA)
Abstract
The invention relates to a power plant (1) and a method for operating a power plant, wherein the turbine (2) disposed in the power plant (1) is to be switched off as quickly as possible for repair or maintenance purposes, the generator (5) being decoupled from the electrical grid for this purpose and being connected to an electrical consumer designed as an immersion heater by means of a switch (11), and the immersion heater being used for heating water, whereby the shutdown time of the turbine (2) can be further shortened.
Description
Technical field
The present invention relates to a kind of power plant equipment, this power plant equipment comprise turbo machine with by turbine driven generator and switch that generator is connected with electric consumer, said generator produces electric energy, and electric energy is sent on the electrical network.In addition, the present invention relates to a kind of method that is used for the generation outage plant, said power plant equipment comprises turbo machine and is connected to the generator on the electrical network.Power plant equipment generally is divided into basic lotus equipment, waist lotus equipment and peak load equipment.According to distribution, the assembly of equipment there is different requirement for the aforementioned device type.Therefore, the assembly in basic lotus equipment is loaded constantly.And opposite with assembly in basic lotus equipment, use the assembly in peak load equipment occasionally.Base lotus equipment generally comprises the turbo machine that constitutes steam turbine and by said turbine driven generator, said generator constitutes generator, and electric energy is sent on the electrical network, particularly on the electric consumer electrical network.Said electric consumer electrical network is by a plurality of power plant equipment supply electric energy, and wherein, the electric energy frequency must strictly be kept, and is in 50Hz or 60Hz.
Background technique
Although steam turbine usually is applied to continuous operation, said steam turbine must be shut down in order to check purpose or maintenance work.For this reason, at first must generator be broken off from electrical network.Subsequently, generator when idle running along with steam turbine turns round together.The rotational kinetic energy in this storage of axle changes into bearing friction and ventilation loss, has reduced the rotating speed of said axle thus.Because the friction of said bearing can be little with respect to the rotation that is stored in the axle with other loss that causes rotating speed to reduce, thus obtain turbo machine can be until the rundown time of a little duration.
When easing down near state of rest from high rotating speed, demonstrate so-called blade resonance, said blade resonance causes the blade vibration of turbine moving blade.The blade resonance of each experience causes greatly loss working life.Therefore, the stopping process of turbo machine should proceed to almost fast from the state according to operation when the frequency of 50Hz or 60Hz and stop.Correspondingly, needing to stop fast, so that the protection steam turbine is avoided bigger infringement.
Summary of the invention
The present invention proposes its task and is in this, and a kind of method and a kind of power plant equipment are provided, and said power plant equipment can realize quickening the shutdown of turbo machine.
Task to power plant equipment solves through power plant equipment; Said power plant equipment comprises turbo machine and by turbine driven generator and switch; Said generator produces electric energy, and electric energy is sent on the electrical network, and said switch is connected generator with electric consumer; Wherein, said electric consumer constitutes the resistive element that is used to add hot water.
In case generator breaks off from electrical network, the electric consumer electrical network that constitutes the resistive element that is used to add hot water is connected to generator immediately.After breaking off from electrical network, the frequency of generator is synchronized no longer usually, and does not allow for this reason to be connected on the electrical network again.No longer the electric power of synchronized is closed down through resistive element effectively.Through electric consumer is connected on the generator, remaining reaction is on the generator and then the moment of torsion of reaction on turbo machine, and this causes braking effect, and finally quickens the shutdown of turbo machine.
Task to said method solves through the method that is used for the generation outage plant, and said power plant equipment comprises turbo machine and generator, and said generator is connected on the electrical network, wherein, after breaking off electrical network, said generator electrical network is connected on the electric consumer.Favourable improvement project has been described in the dependent claims.
Therefore, in the first favourable improvement project, be configured with the resistive element of immersion heater.In addition, advantageously, said immersion heater is arranged for and adds hot water.Thus, the electric energy that transmits through immersion heater is not sent in the surrounding environment to reaction to a certain extent, is used to add hot water but change into.
In addition advantageously, immersion heater can be arranged for the heating cooling water.
Particularly advantageously be, can electric consumer be arranged in the condenser, and the steam of thermal conversion Cheng Shui there.
For this reason, electric consumer is arranged in the so-called hot well in the condenser.Hot well is a condensate collection vessel.
Description of drawings
Set forth the present invention in detail by means of embodiment.The reference character of quoting is in the accompanying drawings explained the assembly of normal operation in a similar manner.
Fig. 1 illustrates the sectional drawing of power plant equipment with the mode of signal;
Fig. 2 illustrates the general view of power plant equipment.
Embodiment
Fig. 1 illustrates power plant equipment 1 with the mode of signal.Said power plant equipment 1 comprises turbo machine 2, and said turbine mechanism becomes steam turbine.Steam turbine 2 is through steam inlet 3 and fresh steam pipeline 4 supply fresh steams.In steam turbine 2, the heat energy of fresh steam changes into rotational kinetic energy.Use rotational kinetic energy to drive generator 5.Generator 5 is connected on the electrical network when moving continuously, and wherein, in this case, frequency is in 50Hz for the European market, and for American market, is in 60Hz.Power plant equipment 1 needed other assembly also is shown, for example condenser 7, steam generator 8 and pump 9 in Fig. 2.In steam generator 8, generate fresh steam, said fresh steam flows in the steam turbine 2 through fresh steam pipeline 4 and steam inlet 3.In condenser 7, the steam that from steam turbine, flows out is condensed into water once more, and wherein, the water vapour that from steam turbine 2, leaks is through outside cooling pipe 10 condensations.Finally, the condensation product that changes into water is guided to steam generator 8 through pump 9.
Now, for maintenance purpose or in order to check or, to stop steam turbine 2 in such a way for similar motivation.At first, unclamp connecting the switch 11 of generator 5 with electrical network 6, and receive on the electric consumer 12, this 13 illustrates in Fig. 1 by a dotted line.At first, the shutdown of turbo machine 2 is supplied with through simple cut-out steam and is realized.This means that the steam that in steam generator 8, generates comes shutoff through valve, and no longer is directed passing steam turbine 2.We can say that to a certain extent the electric consumer 12 that is connected on the generator 5 is applied to trigger action on the generator 5, this affacts on the steam turbine 2 as another trigger action.Thus, shortened the dead time of steam turbine.Switch 11 is being switched behind electric consumer 12, and the electric energy that is derived from generator 5 no longer is a synchronized.Because electric consumer moves in lonely network operation, and do not transmit energy ground and be connected, so be not harmless with the electric power of synchronized with other electric consumer.
Can replace in the mode of execution of choosing, the electric consumer 12 that constitutes immersion heater also can be arranged in the cooling water circuit hydroecium, but said cooling water circulates among Fig. 1 and Fig. 2 not shown.
Claims (11)
1. power plant equipment (1) comprises turbo machine (2) and the generator (5) and the switch (11) that are driven by said turbo machine (2), and said generator produces electric energy and sends it on the electrical network (6), and said switch is connected said generator (5) with electric consumer (12),
It is characterized in that said electric consumer constitutes the resistive element that is used to add hot water.
2. power plant equipment according to claim 1 (1), wherein, said resistive element constitutes immersion heater.
3. power plant equipment according to claim 1 and 2 (1), wherein, said immersion heater is arranged for and adds hot water.
4. power plant equipment according to claim 1 (1) has the condenser (7) that is used for the vapor condensation Cheng Shui that flows through said turbo machine (2), and wherein, said electric consumer (12) is arranged for heating changes into water in said condenser (7) steam.
5. power plant equipment according to claim 1 and 2 (1), wherein, said immersion heater is arranged for the heating cooling water.
6. power plant equipment according to claim 4 (1), wherein, said electric consumer (12) is arranged in the hot well in the said condenser (7).
7. power plant equipment according to claim 5 (1), wherein, said electric consumer (12) is arranged in the said cooling water circuit hydroecium.
8. the method that is used for generation outage plant (1), said power plant equipment comprise turbo machine (2) and generator (5), and said generator is connected on the electrical network (6), wherein, after breaking off said electrical network (6), said generator (5) electrical network are connected on the electric consumer (12).
9. method according to claim 8 wherein, is arranged for said electric consumer (12) and adds hot water.
10. according to Claim 8 or 9 described methods, wherein, use the power of the not synchronized of said electric consumer (12) to stop said turbo machine (2).
11. according to Claim 8 to one of 10 described methods; Wherein, Said electric consumer (12) is constituted resistive element or constitutes immersion heater, and constitute and be used for heating and perhaps be present in the cooling water in the said cool cycles at the water of said condenser (7) condensation.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP09010420A EP2295733A1 (en) | 2009-08-12 | 2009-08-12 | Power plant and method for operating same |
| EP09010420.9 | 2009-08-12 | ||
| PCT/EP2010/061392 WO2011018404A1 (en) | 2009-08-12 | 2010-08-05 | Power plant and method for operating a power plant |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102472118A true CN102472118A (en) | 2012-05-23 |
| CN102472118B CN102472118B (en) | 2016-03-02 |
Family
ID=43003476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201080035691.9A Expired - Fee Related CN102472118B (en) | 2009-08-12 | 2010-08-05 | Power plant equipment and the method for running power plant equipment |
Country Status (3)
| Country | Link |
|---|---|
| EP (2) | EP2295733A1 (en) |
| CN (1) | CN102472118B (en) |
| WO (1) | WO2011018404A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104854313A (en) * | 2012-12-28 | 2015-08-19 | 三菱重工业株式会社 | Power generation system |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2447482A1 (en) * | 2010-10-29 | 2012-05-02 | Siemens Aktiengesellschaft | Method for shutting down a turbo-generating set |
| EP2644841A1 (en) | 2012-03-29 | 2013-10-02 | Alstom Technology Ltd | Method of operating a turbine engine after flame off |
| EP3460206A1 (en) | 2017-09-21 | 2019-03-27 | Siemens Aktiengesellschaft | Method for operating a steam turbine |
| EP3647553B1 (en) * | 2018-11-05 | 2022-12-28 | Orcan Energy AG | Supply of an electromechanical power converter with electrical energy from a thermodynamic cyclical process |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0007389A1 (en) * | 1978-05-08 | 1980-02-06 | Carrier Corporation | Power recovery system and method therefor |
| DE19839636A1 (en) * | 1998-08-31 | 2000-03-02 | Asea Brown Boveri | Power plant with a generator driven by a turbine and method for operating such a power plant |
| DE202004003772U1 (en) * | 2004-03-09 | 2004-06-03 | Enginion Ag | Independent heat engine cycle generating electricity, is connected to or disconnected from electrical load to control speed of expansion machine |
| DE102004016450A1 (en) * | 2004-03-31 | 2005-10-20 | Alstom Technology Ltd Baden | Generator wiring for producing controllable braking power operates during start-up/power reduction of a power engine driven by a generator |
| CN201004553Y (en) * | 2007-01-08 | 2008-01-09 | 李永吉 | Arc over voltage limit for power transmission and distribution system and integrated device for small current grounding and line selection |
| WO2009038562A2 (en) * | 2007-09-19 | 2009-03-26 | Utc Power Corporation | Preventing overspeeding of a turbine driven generator |
-
2009
- 2009-08-12 EP EP09010420A patent/EP2295733A1/en not_active Withdrawn
-
2010
- 2010-08-05 CN CN201080035691.9A patent/CN102472118B/en not_active Expired - Fee Related
- 2010-08-05 WO PCT/EP2010/061392 patent/WO2011018404A1/en active Application Filing
- 2010-08-05 EP EP10739368A patent/EP2464832A1/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0007389A1 (en) * | 1978-05-08 | 1980-02-06 | Carrier Corporation | Power recovery system and method therefor |
| DE19839636A1 (en) * | 1998-08-31 | 2000-03-02 | Asea Brown Boveri | Power plant with a generator driven by a turbine and method for operating such a power plant |
| DE202004003772U1 (en) * | 2004-03-09 | 2004-06-03 | Enginion Ag | Independent heat engine cycle generating electricity, is connected to or disconnected from electrical load to control speed of expansion machine |
| DE102004016450A1 (en) * | 2004-03-31 | 2005-10-20 | Alstom Technology Ltd Baden | Generator wiring for producing controllable braking power operates during start-up/power reduction of a power engine driven by a generator |
| CN201004553Y (en) * | 2007-01-08 | 2008-01-09 | 李永吉 | Arc over voltage limit for power transmission and distribution system and integrated device for small current grounding and line selection |
| WO2009038562A2 (en) * | 2007-09-19 | 2009-03-26 | Utc Power Corporation | Preventing overspeeding of a turbine driven generator |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104854313A (en) * | 2012-12-28 | 2015-08-19 | 三菱重工业株式会社 | Power generation system |
| US9810089B2 (en) | 2012-12-28 | 2017-11-07 | Mitsubishi Heavy Industries, Ltd. | Power generation system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102472118B (en) | 2016-03-02 |
| EP2295733A1 (en) | 2011-03-16 |
| EP2464832A1 (en) | 2012-06-20 |
| WO2011018404A1 (en) | 2011-02-17 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160302 Termination date: 20170805 |