EP3022402A2 - Procédé pour vérifier un dispositif de protection contre le surrégime d'une installation mono-arbre - Google Patents
Procédé pour vérifier un dispositif de protection contre le surrégime d'une installation mono-arbreInfo
- Publication number
- EP3022402A2 EP3022402A2 EP14771808.4A EP14771808A EP3022402A2 EP 3022402 A2 EP3022402 A2 EP 3022402A2 EP 14771808 A EP14771808 A EP 14771808A EP 3022402 A2 EP3022402 A2 EP 3022402A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- steam turbine
- speed
- overspeed protection
- gas turbine
- shaft system
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D21/00—Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for
- F01D21/02—Shutting-down responsive to overspeed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D21/00—Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for
- F01D21/003—Arrangements for testing or measuring
Definitions
- the invention relates to a method for testing an overspeed protection device of a single-shaft system.
- Energy is a gas turbine, a steam turbine and a generator arranged on a common strand.
- the electrical energy is fed into an electrical network and the strand rotates at a speed corresponding to the rated speed of the single-shaft system, such as 50 Hz or 60 Hz.
- the speed may increase to levels above the rated speed.
- the single-shaft system is mechanically and thermally loaded excessively, resulting in a shortening of the life of the single-shaft system.
- an overspeed protection device prevents further increase in the speed of the train, the limit speed being conventionally selected to be between the rated speed and the critical speed.
- the overspeed protection device is checked by operating the single-shaft system in a test mode in which the limit value is lowered from the limit value during normal operation, thereby avoiding excessive load on the single-shaft system during test operation.
- test mode it would be desirable in test mode the same
- the object of the invention is to provide a method for testing an overspeed protection device of a single-shaft system, wherein the method does not lead to an excessive load on the single-shaft system.
- the inventive method for testing an overspeed protection device of a single-shaft turbine having a gas turbine and a steam turbine comprises the steps of: b) operating the single-shaft system such that no steam is conducted into the steam turbine and the gas turbine drives the steam turbine; c) increasing the mass flow of the fuel introduced into the gas turbine such that the speed of the single-shaft system reaches a steam turbine limit speed, wherein the overspeed protection device is arranged such that a first overspeed protection is triggered as soon as the speed of the single-shaft system reaches the steam turbine limit speed; d) Check whether the first overspeed contactor is triggered.
- the thermal load on the steam turbine during testing of the overspeed protection device is low, which gives the single-shaft system a long service life.
- the method is easy to carry out because only the mass flow of the fuel introduced into the gas turbine is controlled in order to reach the steam turbine limit value speed.
- the method is performed with the steps of: e) increasing the mass flow of the fuel introduced into the gas turbine such that the speed of the single-shaft system reaches a gas turbine limit speed higher than the steam turbine limit speed, the over-speed protection device being arranged such that a second overspeed protection is triggered as soon as the speed of the single-shaft system reaches the gas turbine limit speed; f) Check if the second overspeed protection is triggered.
- the method preferably comprises the step of: a) evacuating the steam turbine. If there is a gas in the steam turbine during testing of the overspeed protection device, this is set in motion by the rotor of the steam turbine, which results in a release of so-called ventilation heat.
- the ventilation heat can lead to a strong thermal load of the steam turbine, the strong thermal load leads to a shortening of the life of the steam turbine.
- the single-shaft system preferably has a generator to which no electrical load is connected.
- a single-shaft system 1 has a gas turbine 2, a steam turbine 3 and an electric generator 4.
- the gas turbine 2 and the steam turbine 4 serve to generate rotational energy, wherein the rotational energy in the generator 4 is converted into electrical energy.
- the generator 4 is arranged between the gas turbine 2 and the steam turbine 3.
- the gas turbine 2 has a gas turbine shaft 5 and the steam turbine 3 has a steam turbine shaft 6.
- the generator 4 and the gas turbine 2 are arranged together on the steam turbine shaft 6.
- a separate generator shaft is provided for the generator 4, which is coupled by means of a coupling to the gas turbine shaft 5.
- the figure shows that the steam turbine shaft 6 is connected to the gas turbine shaft 5 by means of a clutch 7.
- the clutch 7 is set up so that the clutch 7 engages as soon as the steam turbine 3 overhauls the gas turbine 2, and disengages when the speed of the steam turbine 3 is smaller than that of the gas turbine 2.
- the clutch 7 may be, for example, an SSS clutch.
- the clutch 7 is changed so that the gas turbine 2 can drive the steam turbine 3, so that the gas turbine 2 and the steam turbine 3 rotate at the same speed. This can be done, for example, that the clutch 7 is mechanically blocked.
- the clutch 7 is removed and replaced by an intermediate shaft, by means of which the gas turbine shaft 5 and the steam turbine shaft 6 are firmly connected to each other.
- the single-shaft system 1 has an overspeed protection device.
- the overspeed protection device is set up such that a first overspeed protection is triggered as soon as the speed of the steam turbine 3 reaches a steam turbine limit speed, and a second overspeed protection is triggered as soon as the speed of the gas turbine 2 reaches a gas turbine limit value speed.
- the method for testing an overspeed protection device of a single-shaft plant 1 having a gas turbine 2, a steam turbine 3 and a generator 4 to which no electric load is connected is carried out with the steps of: a) evacuating the steam turbine 3; al) engagement of the clutch; b) Operating the single-shaft system 1 such that no steam is conducted into the steam turbine 3 and the vacuum in the steam turbine 3 is maintained and the gas turbine 2 drives the steam turbine 3, so that the gas turbine 2 and the steam turbine 3 rotate at the same speed ; c) increasing the mass flow of the fuel introduced into the gas turbine 2 in such a way that the rotational speed of the single-shaft plant 1 is a steam turbine limit value achieved number, wherein the overspeed protection device is arranged such that a first overspeed protection is triggered when the speed of the single-shaft system 1 reaches the steam turbine limit speed; d) checking whether the first overspeed protection is triggered; e) increasing the mass flow of the fuel introduced into the gas turbine 2 such that the speed of the single-
- the steam turbine limit speed may be 106 to 108% of the rated speed and the gas turbine limit speed may be 0.1 to 0.5% greater than the steam turbine limit speed.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Turbines (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
Abstract
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL14771808T PL3022402T3 (pl) | 2013-09-17 | 2014-09-08 | Sposób kontroli urządzenia chroniącego przed nadmierną prędkością obrotową instalacji jednowałowej |
EP14771808.4A EP3022402B1 (fr) | 2013-09-17 | 2014-09-08 | Procédé pour vérifier un dispositif de protection contre le surrégime d'une installation mono-arbre |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP13184814.5A EP2848771A1 (fr) | 2013-09-17 | 2013-09-17 | Procédé de contrôle d'un dispositif de protection contre le surrégime d'une installation à un arbre |
EP14771808.4A EP3022402B1 (fr) | 2013-09-17 | 2014-09-08 | Procédé pour vérifier un dispositif de protection contre le surrégime d'une installation mono-arbre |
PCT/EP2014/069068 WO2015039908A2 (fr) | 2013-09-17 | 2014-09-08 | Procédé pour vérifier un dispositif de protection contre le surrégime d'une installation mono-arbre |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3022402A2 true EP3022402A2 (fr) | 2016-05-25 |
EP3022402B1 EP3022402B1 (fr) | 2017-08-16 |
Family
ID=49182151
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13184814.5A Withdrawn EP2848771A1 (fr) | 2013-09-17 | 2013-09-17 | Procédé de contrôle d'un dispositif de protection contre le surrégime d'une installation à un arbre |
EP14771808.4A Not-in-force EP3022402B1 (fr) | 2013-09-17 | 2014-09-08 | Procédé pour vérifier un dispositif de protection contre le surrégime d'une installation mono-arbre |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13184814.5A Withdrawn EP2848771A1 (fr) | 2013-09-17 | 2013-09-17 | Procédé de contrôle d'un dispositif de protection contre le surrégime d'une installation à un arbre |
Country Status (4)
Country | Link |
---|---|
EP (2) | EP2848771A1 (fr) |
KR (1) | KR101834098B1 (fr) |
PL (1) | PL3022402T3 (fr) |
WO (1) | WO2015039908A2 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112664284A (zh) * | 2020-12-24 | 2021-04-16 | 上海电气电站设备有限公司 | 基于汽轮机运行的保护系统及保护方法 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5301499A (en) * | 1990-06-28 | 1994-04-12 | General Electric Company | Overspeed anticipation and control system for single shaft combined cycle gas and steam turbine unit |
JP3930462B2 (ja) * | 2003-08-01 | 2007-06-13 | 株式会社日立製作所 | 一軸コンバインドサイクル発電設備及びその運転方法 |
US8365583B2 (en) * | 2010-03-23 | 2013-02-05 | General Electric Company | Method and system for testing an overspeed protection system of a powerplant machine |
US8756939B2 (en) * | 2010-03-23 | 2014-06-24 | General Electric Company | Method and system for testing an overspeed protection system of a powerplant machine |
FR2962165B1 (fr) * | 2010-07-02 | 2014-05-02 | Turbomeca | Detection de survitesse d'une turbine libre par mesure sur couplemetre |
-
2013
- 2013-09-17 EP EP13184814.5A patent/EP2848771A1/fr not_active Withdrawn
-
2014
- 2014-09-08 EP EP14771808.4A patent/EP3022402B1/fr not_active Not-in-force
- 2014-09-08 WO PCT/EP2014/069068 patent/WO2015039908A2/fr active Application Filing
- 2014-09-08 KR KR1020167006630A patent/KR101834098B1/ko active IP Right Grant
- 2014-09-08 PL PL14771808T patent/PL3022402T3/pl unknown
Non-Patent Citations (1)
Title |
---|
See references of WO2015039908A3 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112664284A (zh) * | 2020-12-24 | 2021-04-16 | 上海电气电站设备有限公司 | 基于汽轮机运行的保护系统及保护方法 |
Also Published As
Publication number | Publication date |
---|---|
EP3022402B1 (fr) | 2017-08-16 |
KR101834098B1 (ko) | 2018-03-02 |
WO2015039908A2 (fr) | 2015-03-26 |
EP2848771A1 (fr) | 2015-03-18 |
PL3022402T3 (pl) | 2018-01-31 |
KR20160042448A (ko) | 2016-04-19 |
WO2015039908A3 (fr) | 2015-05-28 |
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