Method and device for controlling a steam power plant
IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0060308
(2009-08-17)
|
등록번호 |
US-8624414
(2014-01-07)
|
우선권정보 |
EP-08015000 (2008-08-25) |
국제출원번호 |
PCT/EP2009/060593
(2009-08-17)
|
§371/§102 date |
20110223
(20110223)
|
국제공개번호 |
WO2010/026035
(2010-03-11)
|
발명자
/ 주소 |
- Bennauer, Martin
- Werthes, Heribert
|
출원인 / 주소 |
- Siemens Aktiengesellschaft
|
인용정보 |
피인용 횟수 :
2 인용 특허 :
8 |
초록
▼
A method for controlling a steam power plant is provided. The method includes the steps of providing a first signal showing a reduction of the current power level of the generator, generating a second signal showing a short circuit interruption as a function of the first signal, resetting the second
A method for controlling a steam power plant is provided. The method includes the steps of providing a first signal showing a reduction of the current power level of the generator, generating a second signal showing a short circuit interruption as a function of the first signal, resetting the second signal after a predetermined time period and blocking the second signal for a predetermined period of time, stopping and subsequently starting the turbine as a function of the second signal, generating a third signal showing a load rejection as a function of the first signal, and permanently stopping the turbine as a function of the third signal. A device for controlling a steam power plant is also provided.
대표청구항
▼
1. A method for controlling a steam power plant having a generator and a turbine, comprising: providing a first signal indicating a drop in an actual power of the generator;generating a second signal which indicates a short circuit interruption, as a first function of the first signal;resetting of t
1. A method for controlling a steam power plant having a generator and a turbine, comprising: providing a first signal indicating a drop in an actual power of the generator;generating a second signal which indicates a short circuit interruption, as a first function of the first signal;resetting of the second signal after a predetermined first time span and blocking of the second signal for a predetermined second time span;stopping and subsequent starting of the turbine as a second function of the second signal;generating a third signal which indicates load shedding, as a third function of the first signal; andpermanent stopping of the turbine as a fourth function of the third signal. 2. The method as claimed in claim 1, wherein the first signal is provided when the actual power of the generator has dropped abruptly by an amount of a predetermined value, or the first signal is provided when the actual power of the generator has fallen to a predetermined negative value and the actual power of the generator has become lower than double the requirements of the generator and a difference between a desired power and the actual power of the generator has become higher than double the requirements of the generator. 3. The method as claimed in claim 1, wherein the predetermined first time span is between 100 ms and 200 ms. 4. The method as claimed in claim 3, wherein the predetermined first time span is 150 ms. 5. The method as claimed in claim 1, wherein the predetermined second time span is between 4 s and 10 s. 6. The method as claimed in claim 5, wherein the predetermined second time span is 7 s. 7. The method as claimed in claim 1, wherein the generation of the third signal which indicates load shedding takes place as the third function of the first signal and of a predetermined third time span. 8. The method as claimed in claim 7, wherein the predetermined third time span is between 1.5 s and 2.5 s. 9. The method as claimed in claim 8, wherein the predetermined third time span is 2 s. 10. The method as claimed in claim 1, wherein the generation of the third signal which indicates load shedding takes place as the third function of a load switch for the generator. 11. A device for controlling a steam power plant having a generator and a turbine, comprising: a means for providing a first signal which indicates a drop in the actual power of the generator;a means for generating a second signal which indicates a short circuit interruption, as a first function of the first signal;a means for resetting the second signal after a predetermined first time span and for blocking the second signal for a predetermined second time span;a means for stopping and subsequently starting the turbine as a second function of the second signal;a means for generating a third signal which indicates load shedding, as a third function of the first signal; anda means for the permanent stopping of the turbine as a fourth function of the third signal. 12. The device as claimed in claim 11, wherein the first signal is provided when the actual power of the generator has dropped abruptly by an amount of a predetermined value, or the first signal is provided when the actual power of the generator has fallen to a predetermined negative value and the actual power of the generator has become lower than double the requirements of the generator and a difference between a desired power and the actual power of the generator has become higher than double the requirements of the generator. 13. The device as claimed in claim 11, wherein the predetermined first time span is between 100 ms and 200 ms. 14. The device as claimed in claim 13, wherein the predetermined first time span is 150 ms. 15. The device as claimed in claim 11, wherein the predetermined second time span is between 4 s and 10 s. 16. The device as claimed in claim 15, wherein the predetermined second time span is 7 s. 17. The device as claimed in claim 11, wherein the generation of the third signal which indicates load shedding takes place as the third function of the first signal and of a predetermined third time span. 18. The device as claimed in claim 17, wherein the predetermined third time span is between 1.5 s and 2.5 s. 19. The device as claimed in claim 18, wherein the predetermined third time span is 2 s. 20. The device as claimed in claim 11, wherein the generation of the third signal which indicates load shedding takes place as the third function of a load switch for the generator.
이 특허에 인용된 특허 (8)
-
Tanaka, Satoshi, 1-axis type combined cycle plant.
-
Yuri, Nobuyuki, Cogeneration system.
-
van de Loo, Paul, Control system for a cogeneration unit.
-
VandenBerghe Terry,FRX, Control technique for a lean burning engine system.
-
Rowen William Irwin ; Anand Raj Kumar ; Wooding Richard J., Gas turbine generator having reserve capacity controller.
-
Bachmann Rolf,CHX ; Hausermann Fredy,CHX ; Muller Peter,CHX ; Weiss Gerhard,CHX, Method of operating a combined-cycle power plant.
-
Kure-Jensen Jens (Schenectady NY) Rowen William I. (Schenectady NY) Moore James H. (Schenectady NY), Overspeed anticipation and control system for single shaft combined cycle gas and steam turbine unit.
-
McGinley,Ray M.; Luebs,Alan B., Starting and controlling speed of a two spool gas turbine engine.
이 특허를 인용한 특허 (2)
-
Lyons, John; Cusworth, Stephen; McGuire, Jonathon; Szymko, Shinri; King, Toby, Method and apparatus for controlling a turbogenerator system.
-
Lyons, John; Cusworth, Stephen; McGuire, Jonathon; Szymko, Shinri; King, Toby, Method and apparatus for controlling a turbogenerator system.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.