JPS6449802A - Method of controlling temperature of steam of power plant - Google Patents

Method of controlling temperature of steam of power plant

Info

Publication number
JPS6449802A
JPS6449802A JP20406487A JP20406487A JPS6449802A JP S6449802 A JPS6449802 A JP S6449802A JP 20406487 A JP20406487 A JP 20406487A JP 20406487 A JP20406487 A JP 20406487A JP S6449802 A JPS6449802 A JP S6449802A
Authority
JP
Japan
Prior art keywords
temperature
difference
actual temperature
actual
predicted
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
JP20406487A
Other languages
Japanese (ja)
Inventor
Kazumichi Inahashi
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.)
Hitachi Ltd
Hitachi Industry and Control Solutions Co Ltd
Original Assignee
Hitachi Engineering Co Ltd Ibaraki
Hitachi 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 Hitachi Engineering Co Ltd Ibaraki, Hitachi Ltd filed Critical Hitachi Engineering Co Ltd Ibaraki
Priority to JP20406487A priority Critical patent/JPS6449802A/en
Publication of JPS6449802A publication Critical patent/JPS6449802A/en
Pending legal-status Critical Current

Links

Landscapes

  • Control Of Steam Boilers And Waste-Gas Boilers (AREA)

Abstract

PURPOSE: To enhance controllabiltty by applying the dynamic characteristic model of a boiler heater to a superheater and a reheater and using an actual temperature as a feedback signal when the estimated temperature at n minute later derived from the predicted temperature of a model is lower than the actual temperatures CONSTITUTION: An actual temperature difference 207 is prepared independently from a predicted difference signal 203 and if the actual temperature 116 (difference 207) is higher than the predicted temperature 203 (difference 206), a high signal selection circuit 117 controls the actual temperature preferentially. Since response lag in the opening operation of an RH temperature decreasing unit 205 behind high speed reverse fluctuation in the amount of generated power is improved through preferential use of actual temperature difference, controllability can be enhanced significantly.
JP20406487A 1987-08-19 1987-08-19 Method of controlling temperature of steam of power plant Pending JPS6449802A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20406487A JPS6449802A (en) 1987-08-19 1987-08-19 Method of controlling temperature of steam of power plant

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20406487A JPS6449802A (en) 1987-08-19 1987-08-19 Method of controlling temperature of steam of power plant

Publications (1)

Publication Number Publication Date
JPS6449802A true JPS6449802A (en) 1989-02-27

Family

ID=16484162

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20406487A Pending JPS6449802A (en) 1987-08-19 1987-08-19 Method of controlling temperature of steam of power plant

Country Status (1)

Country Link
JP (1) JPS6449802A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112097244A (en) * 2020-10-15 2020-12-18 西安热工研究院有限公司 Wall temperature prediction-based screen type superheater overtemperature control system and method for coal-fired unit
CN114110550A (en) * 2021-11-12 2022-03-01 国电内蒙古东胜热电有限公司 Boiler temperature prediction method and system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112097244A (en) * 2020-10-15 2020-12-18 西安热工研究院有限公司 Wall temperature prediction-based screen type superheater overtemperature control system and method for coal-fired unit
CN114110550A (en) * 2021-11-12 2022-03-01 国电内蒙古东胜热电有限公司 Boiler temperature prediction method and system
CN114110550B (en) * 2021-11-12 2023-08-29 国电内蒙古东胜热电有限公司 Boiler temperature prediction method and system

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