JPS5510817A - Speed governing - Google Patents

Speed governing

Info

Publication number
JPS5510817A
JPS5510817A JP8205778A JP8205778A JPS5510817A JP S5510817 A JPS5510817 A JP S5510817A JP 8205778 A JP8205778 A JP 8205778A JP 8205778 A JP8205778 A JP 8205778A JP S5510817 A JPS5510817 A JP S5510817A
Authority
JP
Japan
Prior art keywords
water level
speed
signal
setting resistor
detection 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
JP8205778A
Other languages
Japanese (ja)
Inventor
Shozo Sashino
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 JP8205778A priority Critical patent/JPS5510817A/en
Publication of JPS5510817A publication Critical patent/JPS5510817A/en
Pending legal-status Critical Current

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  • Control Of Eletrric Generators (AREA)

Abstract

PURPOSE: To suppress the change in frequency when a load is cut off, by using the signal of a water level regulator or a load limiter as a bias signal for a speed controller.
CONSTITUTION: The difference between a speed setpoint from a speed setting resistor 12 and a speed signal from a revolution speed transmitter 1 and a water level detection signal from a water level setting resistor 15 are applied to a selector ciucuit 7, which applies the minimum or maximum value of the difference and the water level detection signal to a servomotor 4 for opening or closing the guide vanes of a water wheel 3. At the same time, an adder circuit 8 is supplied with the water level detection signal from the water level setting resistor 15 as the bias signal for the speed setpoint.
COPYRIGHT: (C)1980,JPO&Japio
JP8205778A 1978-07-07 1978-07-07 Speed governing Pending JPS5510817A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8205778A JPS5510817A (en) 1978-07-07 1978-07-07 Speed governing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8205778A JPS5510817A (en) 1978-07-07 1978-07-07 Speed governing

Publications (1)

Publication Number Publication Date
JPS5510817A true JPS5510817A (en) 1980-01-25

Family

ID=13763876

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8205778A Pending JPS5510817A (en) 1978-07-07 1978-07-07 Speed governing

Country Status (1)

Country Link
JP (1) JPS5510817A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5064641A (en) * 1973-10-12 1975-05-31

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5064641A (en) * 1973-10-12 1975-05-31

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