JPS5447004A - Controlling of steam temperature of boiller - Google Patents

Controlling of steam temperature of boiller

Info

Publication number
JPS5447004A
JPS5447004A JP11312577A JP11312577A JPS5447004A JP S5447004 A JPS5447004 A JP S5447004A JP 11312577 A JP11312577 A JP 11312577A JP 11312577 A JP11312577 A JP 11312577A JP S5447004 A JPS5447004 A JP S5447004A
Authority
JP
Japan
Prior art keywords
steam temperature
load
calculation
pid
signal
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.)
Pending
Application number
JP11312577A
Other languages
Japanese (ja)
Inventor
Yasumitsu Kurosaki
Kazumitsu Yamamoto
Tetsuo Teramoto
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.)
Kawasaki Heavy Industries Ltd
Original Assignee
Kawasaki Heavy Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kawasaki Heavy Industries Ltd filed Critical Kawasaki Heavy Industries Ltd
Priority to JP11312577A priority Critical patent/JPS5447004A/en
Publication of JPS5447004A publication Critical patent/JPS5447004A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22G—SUPERHEATING OF STEAM
    • F22G5/00—Controlling superheat temperature
    • F22G5/12—Controlling superheat temperature by attemperating the superheated steam, e.g. by injected water sprays

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Temperature (AREA)

Abstract

PURPOSE:To perform good control under both low load and high load on a boiler, by varying the gains of proportional bands of steam temperature controllers depending on the load. CONSTITUTION:The PID calculation of the difference between a setpoint for the steam temperature at the outlet of the boiler and a measured value is performed by a PID controller 1 of a second water feed control system. An outlet steam temperature set signal for a second overheat reducer 2 is produced from the sum of the output of the PID calculation and a feedforward signal 8 based on a load set signal. The PI calculation of the difference between theoutlet steam temperature set signal and the measured value is performed by a PI controller 1'. A second feedforward signal 10 is added to the output of the PI calculation to apply a valve opening degree command for the reducer 2. A first overheat reducer 5 is controlled likewise. Multipliers 12, 13 are connected to the inputs of the PID controllers 1,11, respectively. The gains, which are multiplied to the input deviations of these controllers, are varied depending on a load signal.
JP11312577A 1977-09-20 1977-09-20 Controlling of steam temperature of boiller Pending JPS5447004A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11312577A JPS5447004A (en) 1977-09-20 1977-09-20 Controlling of steam temperature of boiller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11312577A JPS5447004A (en) 1977-09-20 1977-09-20 Controlling of steam temperature of boiller

Publications (1)

Publication Number Publication Date
JPS5447004A true JPS5447004A (en) 1979-04-13

Family

ID=14604154

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11312577A Pending JPS5447004A (en) 1977-09-20 1977-09-20 Controlling of steam temperature of boiller

Country Status (1)

Country Link
JP (1) JPS5447004A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5596807A (en) * 1979-01-17 1980-07-23 Hitachi Ltd Boiler steam temperature controller
EP0285297A2 (en) * 1987-04-02 1988-10-05 International Control Automation Finance S.A. Boiler steam temperature controller
CN106524131A (en) * 2016-09-23 2017-03-22 华北电力大学（保定） Feedforward control method for steam temperature of thermal power generating unit
CN109654475A (en) * 2018-11-26 2019-04-19 中国电力工程顾问集团西北电力设计院有限公司 A kind of double reheat power generation sets Switching Logic Control of Reheat Steam Temperature method

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5198403A (en) * 1975-02-26 1976-08-30

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5198403A (en) * 1975-02-26 1976-08-30

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5596807A (en) * 1979-01-17 1980-07-23 Hitachi Ltd Boiler steam temperature controller
JPS621161B2 (en) * 1979-01-17 1987-01-12 Hitachi Seisakusho Kk
EP0285297A2 (en) * 1987-04-02 1988-10-05 International Control Automation Finance S.A. Boiler steam temperature controller
US4791889A (en) * 1987-04-02 1988-12-20 The Babcock & Wilcoc Company Steam temperature control using a modified Smith Predictor
CN106524131A (en) * 2016-09-23 2017-03-22 华北电力大学（保定） Feedforward control method for steam temperature of thermal power generating unit
CN109654475A (en) * 2018-11-26 2019-04-19 中国电力工程顾问集团西北电力设计院有限公司 A kind of double reheat power generation sets Switching Logic Control of Reheat Steam Temperature method
CN109654475B (en) * 2018-11-26 2020-09-04 中国电力工程顾问集团西北电力设计院有限公司 Reheating steam temperature control method for double reheating unit

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