EP0721541B1 - Verfahren und vorrichtung zur darstellung des betriebszustandes einer turbine während eines anfahrvorgangs - Google Patents

Verfahren und vorrichtung zur darstellung des betriebszustandes einer turbine während eines anfahrvorgangs Download PDF

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Publication number
EP0721541B1
EP0721541B1 EP94926772A EP94926772A EP0721541B1 EP 0721541 B1 EP0721541 B1 EP 0721541B1 EP 94926772 A EP94926772 A EP 94926772A EP 94926772 A EP94926772 A EP 94926772A EP 0721541 B1 EP0721541 B1 EP 0721541B1
Authority
EP
European Patent Office
Prior art keywords
turbine
starting
speed
time
determined
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.)
Expired - Lifetime
Application number
EP94926772A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0721541A1 (de
Inventor
Paul Girbig
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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Filing date
Publication date
Application filed by Siemens AG, Siemens Corp filed Critical Siemens AG
Publication of EP0721541A1 publication Critical patent/EP0721541A1/de
Application granted granted Critical
Publication of EP0721541B1 publication Critical patent/EP0721541B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F01D19/00—Starting of machines or engines; Regulating, controlling, or safety means in connection therewith

Definitions

  • the invention relates to a method of representation the operating state of a turbine during a start-up process according to the preamble of claim 1. It relates further on a device for performing the method according to the preamble of claim 4.
  • the starting process of a turbine e.g. a steam turbine, from Standstill up to idle or operating speed continues usually together from different speed increases and waiting times.
  • the temporal increase in speed depends on this until the operating speed is reached in particular from turbine-specific parameters and from thermal Condition of the turbine.
  • the invention is therefore based on the object of a method specify with which a suitable representation of the operating state the turbine is possible during the start-up process. With a suitable device, this should be done with simple means can be achieved.
  • the reference curve represents the functional dependency the temporal change in the turbine speed from the turbine-specific parameters and those derived from measured values operational parameters.
  • Each starting characteristic is expediently by a value for the downtime of the turbine and by a value for marked the turbine temperature. Therefore, advantageously the turbine temperature as operationally relevant parameters and the downtime of the turbine is detected.
  • the downtime is derived from the turbine speed, by standing still or approaching Standstill of the turbine past time is recorded.
  • the time shown is expedient History of the turbine speed saved at the same time.
  • the storage process is between a start signal and a Stop signal which is reached when an idling or operating speed is reached the turbine is released.
  • An embodiment of the invention is based on a Drawing explained in more detail. It shows schematically a device to illustrate the starting process of a turbine.
  • the figure shows the turbine 2 on a shaft 4, over the one Unit 6, e.g. a generator or an air compressor becomes.
  • the turbine 2 is turned on via a valve 8
  • Working medium AM supplied supplied, the whole or in the turbine is partially relaxed and drives the turbine 2.
  • the working medium AM flows out via an outflow line 10 the turbine 2.
  • the turbine 2 is a steam or gas turbine.
  • a first sensor 12 for measuring the turbine speed n and a second sensor 14 for measuring the turbine temperature T provided.
  • One from each of the sensors 12 and 14 Signal line 16 or 18 from the turbine speed n and signals corresponding to the turbine temperature T are dashed shown device 20 for processing measured values and processing.
  • the temperature T is expediently measured on the turbine housing.
  • the device 20 comprises a converter 22 connected to the signal line 16 and a converter 24 connected to the signal line 18.
  • a signal k s characteristic of the rotational state of the turbine 2 is formed in the converter 22 by limit value monitoring of the turbine speed n. This indicates whether the turbine 2 is at a standstill or approximately at a standstill.
  • the signal k s is forwarded to a time module 26 connected downstream of the converter 22. When the signal k s arrives, the time module 26 is started. This forms a time factor k z from the signal k s , which informs a first arithmetic unit 28 of the period of time that has passed since the standstill signal k s arrived.
  • the position of a quick-closing valve of the actuator 8 is additionally queried in the form of a feedback signal s. If the actuator 8 is closed, there is a corresponding feedback s to the arithmetic unit 28. If the converter 22 detects that the turbine speed n falls below the limit value and generates a signal k s , the time factor k z is used to indicate the start of the standstill period where the turbine speed n is zero.
  • a temperature factor k T which describes the thermal state of the turbine 2, is formed in the converter 24 from a measurement of the temperature T of the turbine 2, for example by means of a characteristic curve.
  • the temperature factor k T is forwarded to the computing unit 28.
  • an adjustable process factor k p which is derived from the process criteria, is fed to the computing unit 28 via an operating element 30.
  • the arithmetic unit 28 uses the factors k T , k z and k p and turbine-specific parameters stored in a memory 32 to determine a reference curve RV for a starting process of the turbine 2.
  • the memory 32 contains a number of starting characteristics A n , each of which Starting characteristic curve A n is provided with an identifier for a downtime t n and a turbine temperature T n .
  • Starting characteristic curve A n is provided with an identifier for a downtime t n and a turbine temperature T n .
  • Some typical starting characteristic curves A n with their time-dependent setpoint or reference speed curve are illustrated in a diagram 33.
  • Each start-up characteristic curve A n is assigned turbine-specific parameters, such as, for example, speed increase gradients m, waiting times w and a critical speed range b, which must be passed through particularly quickly.
  • the starting characteristic curve A n with the longer waiting times w and / or flatter speed increase gradient m is determined as the reference curve RV .
  • the process factor k p also takes into account the case where the unit 6 driven by the turbine 2 requires longer waiting times w or flatter speed increase gradients m compared to the turbine 2. In this case too, a starting characteristic curve A n-1, which takes into account the turbine 2 alone, the next flatter starting characteristic curve A n is determined. This avoids unnecessary loads on the turbine 2 and / or the unit 6.
  • the reference curve RV determined by means of the factors k T , k z and k p is passed on to a display device 36 via a signal line 34 and is shown there in a coordinate field 38.
  • the abscissa forms the time axis labeled t and the ordinate the speed axis labeled n.
  • a start signal k a is generated in a converter 39 by means of the signal k s and the speed n. This is forwarded to a second computing unit 40.
  • a signal from a turbine controller can also be used to form the start signal k a .
  • the instantaneous actual value of the speed n is forwarded by the computing unit 40 to the display device 36 via a signal line 42.
  • the current time course AV up to the current actual value I is shown there.
  • the current actual value I and the setpoint S of the reference curve RV that is present at the same time t are shown in a bar chart 44. If a limit value query of the speed n in the converter 38 indicates that an idling or operating speed of the turbine 2 has been reached, the converter 38 forwards a stop signal k b to the computing unit 40; the saving process is then ended.
  • the memory content of the computing units is via the display device 36 28 and 40 in curve form RV, AV available. Consequently any start of the turbine 2 by displaying the reference course RV and the current one temporal course AV are retrieved, so that both during a current starting process as well as a later one Control a direct comparison between the actual Speed curve AV and the reference curve RV during the starting process of the turbine 2 is possible.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Turbines (AREA)
  • Control Of Eletrric Generators (AREA)
EP94926772A 1993-09-21 1994-09-09 Verfahren und vorrichtung zur darstellung des betriebszustandes einer turbine während eines anfahrvorgangs Expired - Lifetime EP0721541B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4332078 1993-09-21
DE4332078A DE4332078A1 (de) 1993-09-21 1993-09-21 Verfahren und Vorrichtung zur Darstellung des Betriebszustandes einer Turbine während eines Anfahrvorgangs
PCT/DE1994/001039 WO1995008700A1 (de) 1993-09-21 1994-09-09 Verfahren und vorrichtung zur darstellung des betriebszustandes einer turbine während eines anfahrvorgangs

Publications (2)

Publication Number Publication Date
EP0721541A1 EP0721541A1 (de) 1996-07-17
EP0721541B1 true EP0721541B1 (de) 1998-04-22

Family

ID=6498220

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94926772A Expired - Lifetime EP0721541B1 (de) 1993-09-21 1994-09-09 Verfahren und vorrichtung zur darstellung des betriebszustandes einer turbine während eines anfahrvorgangs

Country Status (12)

Country Link
US (1) US5807069A (OSRAM)
EP (1) EP0721541B1 (OSRAM)
JP (1) JP3784406B2 (OSRAM)
KR (1) KR100363072B1 (OSRAM)
CN (1) CN1057815C (OSRAM)
AT (1) ATE165423T1 (OSRAM)
AU (1) AU679563B2 (OSRAM)
CA (1) CA2172254C (OSRAM)
DE (2) DE4332078A1 (OSRAM)
ES (1) ES2115972T3 (OSRAM)
TW (1) TW264520B (OSRAM)
WO (1) WO1995008700A1 (OSRAM)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100815706B1 (ko) * 2001-12-21 2008-03-20 주식회사 포스코 기력발전 터빈의 열팽창에 따른 승속 제어장치
KR20040051794A (ko) * 2002-12-13 2004-06-19 주식회사 포스코 터빈 기동 시 터빈 회전 속도 제어 방법
DE102004015126A1 (de) * 2004-03-27 2005-10-13 Robert Bosch Gmbh Verfahren und Vorrichtung zur Übertragung einer Kennung für den Typ eines Generators an ein Steuergerät eines Kraftfahrzeugs
DE102008021102A1 (de) * 2008-04-28 2009-10-29 Siemens Aktiengesellschaft Wirkungsgradüberwachung eines Verdichters
US8839664B2 (en) * 2012-04-06 2014-09-23 Siemens Energy, Inc. Detection and classification of failures of power generating equipment during transient conditions
CN103364200B (zh) * 2013-07-03 2015-12-02 哈尔滨工程大学 一种燃气轮机启动过程状态评估方法

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE269032C (OSRAM) *
DE1576952A1 (de) * 1967-10-05 1970-07-02 Escher Wyss Gmbh Schaltungsanordnung und Fahrleitgeraet zum Anfahren von Dampfturbinen
DE2206780A1 (de) * 1972-02-12 1973-08-16 Siemens Ag Anfahreinrichtung fuer einen an eine turbine angekuppelten generator
US4181840A (en) * 1975-02-13 1980-01-01 Westinghouse Electric Corp. Anticipative turbine control
DD146359B3 (de) * 1979-09-26 1992-07-30 Veag Vereinigte Energiewerke Ag Verfahren zur bauteilueberwachung und prozesssteuerung in dampferzeugeranlagen
DD206440A1 (de) * 1981-07-17 1984-01-25 Orgreb Inst Fuer Kraftweke Verfahren zur darstellung und bewertung von prozessfuehrungsbedingungen
US4644270A (en) * 1982-08-31 1987-02-17 Westinghouse Electric Corp. Apparatus for monitoring housed turbine blading to obtain blading-to-housing distance
DD269032A1 (de) * 1985-12-20 1989-06-14 Zittau Ing Hochschule Verfahren zur bestimmung zulaessiger betriebsbereiche von drehstromasynchronmotorantrieben
EP0275192A3 (en) * 1987-01-16 1989-07-19 General Electric Company Reconfigurable integrated controls and displays for a turbomachine
DE4120602C2 (de) * 1991-06-21 1995-02-02 Porsche Ag Verfahren zur selbsttätigen Steuerung einer drehzahlwandelnden Anfahreinrichtung eines Kraftfahrzeugs

Also Published As

Publication number Publication date
JPH09506945A (ja) 1997-07-08
AU7650794A (en) 1995-04-10
CN1057815C (zh) 2000-10-25
KR960705124A (ko) 1996-10-09
TW264520B (OSRAM) 1995-12-01
AU679563B2 (en) 1997-07-03
CN1131450A (zh) 1996-09-18
CA2172254C (en) 2005-09-06
ES2115972T3 (es) 1998-07-01
EP0721541A1 (de) 1996-07-17
WO1995008700A1 (de) 1995-03-30
JP3784406B2 (ja) 2006-06-14
CA2172254A1 (en) 1995-03-30
DE4332078A1 (de) 1995-03-30
DE59405807D1 (de) 1998-05-28
KR100363072B1 (ko) 2003-03-10
ATE165423T1 (de) 1998-05-15
US5807069A (en) 1998-09-15

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