JPS5593907A - Controller for speed of steam turbine - Google Patents

Controller for speed of steam turbine

Info

Publication number
JPS5593907A
JPS5593907A JP82979A JP82979A JPS5593907A JP S5593907 A JPS5593907 A JP S5593907A JP 82979 A JP82979 A JP 82979A JP 82979 A JP82979 A JP 82979A JP S5593907 A JPS5593907 A JP S5593907A
Authority
JP
Japan
Prior art keywords
rotational frequency
converter
analogue quantity
frequency
correlative
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
JP82979A
Other languages
Japanese (ja)
Inventor
Susumu Wakamatsu
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP82979A priority Critical patent/JPS5593907A/en
Publication of JPS5593907A publication Critical patent/JPS5593907A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2200/00—Mathematical features
    • F05B2200/20—Special functions
    • F05B2200/22—Power
    • F05B2200/221—Square power

Landscapes

  • Control Of Turbines (AREA)

Abstract

PURPOSE: To reduce the quantity of overshoot, by subtracting a numerical value inversely proportional to the square of rotational frequency correlative to vibration moment, from a rotation frequency command and comparing the remainder with a reference speed to regulate a control valve.
CONSTITUTION: The rotational frequency of a turbine 14 is detected by a rotational frequency detector 15 and processed by a frequency digital converter 16 and a D-A converter 17 to apply an analogue quantity S of the rotational frequency to a summing amplifier 10 and a multiplier 19. The multiplier squares the analogue quantity and applies the squared quantity S2 to a divider 20. The divider divides the squared analogue quantity S2 to generate a numerical value 1/S2 correlative to vibration moment GD2. The analogue quantity 1/S2 is changed into a digital value by an A-D converter 21. A value (M-1/S2) is calculated by a subtracter 22 and compared with a rotational frequency set point R by a comparison circuit 9. When the compared quantities coincide with each other, a relay 18 is energized.
COPYRIGHT: (C)1980,JPO&Japio
JP82979A 1979-01-06 1979-01-06 Controller for speed of steam turbine Pending JPS5593907A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP82979A JPS5593907A (en) 1979-01-06 1979-01-06 Controller for speed of steam turbine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP82979A JPS5593907A (en) 1979-01-06 1979-01-06 Controller for speed of steam turbine

Publications (1)

Publication Number Publication Date
JPS5593907A true JPS5593907A (en) 1980-07-16

Family

ID=11484516

Family Applications (1)

Application Number Title Priority Date Filing Date
JP82979A Pending JPS5593907A (en) 1979-01-06 1979-01-06 Controller for speed of steam turbine

Country Status (1)

Country Link
JP (1) JPS5593907A (en)

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