JPS562405A - Load control device - Google Patents

Load control device

Info

Publication number
JPS562405A
JPS562405A JP7680479A JP7680479A JPS562405A JP S562405 A JPS562405 A JP S562405A JP 7680479 A JP7680479 A JP 7680479A JP 7680479 A JP7680479 A JP 7680479A JP S562405 A JPS562405 A JP S562405A
Authority
JP
Japan
Prior art keywords
signal
output
main steam
steam pressure
input
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
Application number
JP7680479A
Other languages
Japanese (ja)
Other versions
JPS5820362B2 (en
Inventor
Atsushi Takita
Motoharu Kuchitsu
Toshihiko Azuma
Yoshio Sato
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
Original Assignee
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 Ltd filed Critical Hitachi Ltd
Priority to JP54076804A priority Critical patent/JPS5820362B2/en
Publication of JPS562405A publication Critical patent/JPS562405A/en
Publication of JPS5820362B2 publication Critical patent/JPS5820362B2/en
Expired legal-status Critical Current

Links

Abstract

PURPOSE: To prevent control valve from erosion by determining the optimum opening of control valves in the region of voltage transforming operation, considering fluctuations of system frequency, slope regulation rate, and turbine thermal efficiency in a load control system for a turbine power plant.
CONSTITUTION: A load control device is so constituted that voltage transforming operation may be performed by throttling properly plural control valves installed at the flow inlet of the main steam based on a nozzle choke control system. A circuit, designed to obtain the optimum opening set point of control valve during voltage transforming operation, consists of an output directive signal 11, a subtractor 13 to input a generator output signal 12, a PI controller 15 to output a governer opening directive signal 16 and a function generator 17 to determine a main steam pressure setting signal 18 with an output directive signal 11. The circuit is also provided with a subtractor 20 to input the above setting signal 18 and a main steam pressure signal 19, and a PI controller 21 to output a main steam pressure correcting signal 22 and an adder 23 to output a boiler input directive signal 24.
COPYRIGHT: (C)1981,JPO&Japio
JP54076804A 1979-06-20 1979-06-20 load control device Expired JPS5820362B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54076804A JPS5820362B2 (en) 1979-06-20 1979-06-20 load control device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54076804A JPS5820362B2 (en) 1979-06-20 1979-06-20 load control device

Publications (2)

Publication Number Publication Date
JPS562405A true JPS562405A (en) 1981-01-12
JPS5820362B2 JPS5820362B2 (en) 1983-04-22

Family

ID=13615834

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54076804A Expired JPS5820362B2 (en) 1979-06-20 1979-06-20 load control device

Country Status (1)

Country Link
JP (1) JPS5820362B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0158756U (en) * 1987-10-06 1989-04-12
CN106870024B (en) * 2017-03-29 2018-06-22 北京华建网源电力设计研究所 The Primary frequency control ability compensation method of coal-fired turbine LP rotors heating

Also Published As

Publication number Publication date
JPS5820362B2 (en) 1983-04-22

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