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JPS56146077A - Operation of hydraulic turbine - Google Patents

Operation of hydraulic turbine

Info

Publication number
JPS56146077A
JPS56146077A JP4689680A JP4689680A JPS56146077A JP S56146077 A JPS56146077 A JP S56146077A JP 4689680 A JP4689680 A JP 4689680A JP 4689680 A JP4689680 A JP 4689680A JP S56146077 A JPS56146077 A JP S56146077A
Authority
JP
Japan
Prior art keywords
water
water wheel
close
emergency
turbine
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
JP4689680A
Other languages
Japanese (ja)
Inventor
Toshiaki Yokoyama
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 JP4689680A priority Critical patent/JPS56146077A/en
Priority to US06/221,814 priority patent/US4474528A/en
Publication of JPS56146077A publication Critical patent/JPS56146077A/en
Pending legal-status Critical Current

Links

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/20—Hydro energy

Landscapes

  • Control Of Water Turbines (AREA)

Abstract

PURPOSE: To prevent an abnormal increase or decrease in water pressure resulting from the introduction or interruption of water into or from a hydrolic turbine and to stop the turbine smoothly in case where an emergency arises during power generating operation and a guide vane fails to close properly by a method wherein the opening degree of an inlet valve is kept as it is for a predetermined period of time.
CONSTITUTION: In case an emergency arises during the power generating operation G of the water wheel, it is detected by a protective relay at STEP86-1 and a water wheel stopping magnet is energized at once causing a clutch to go OFF. Next, a load control is stopped at STEP77M and a speed adjustment function is locked at STEP65F. Further, at STEP21T, the inlet valve begins to close gently instead of closing imediately, after a lapse of a predetermined time ΔT during which the opening degree of the valve is kept as it is. Accordingly, even when the guide vane fails to close in an emergency, the abnormal increase of the water pressure on the water wheel can be prevented and the water wheel can be stopped smoothly.
COPYRIGHT: (C)1981,JPO&Japio
JP4689680A 1980-01-07 1980-04-11 Operation of hydraulic turbine Pending JPS56146077A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP4689680A JPS56146077A (en) 1980-04-11 1980-04-11 Operation of hydraulic turbine
US06/221,814 US4474528A (en) 1980-01-07 1980-12-31 Water wheel operation control method and apparatus therefor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4689680A JPS56146077A (en) 1980-04-11 1980-04-11 Operation of hydraulic turbine

Publications (1)

Publication Number Publication Date
JPS56146077A true JPS56146077A (en) 1981-11-13

Family

ID=12760121

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4689680A Pending JPS56146077A (en) 1980-01-07 1980-04-11 Operation of hydraulic turbine

Country Status (1)

Country Link
JP (1) JPS56146077A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998003792A1 (en) * 1996-07-19 1998-01-29 Hitachi, Ltd. Pump-turbine system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998003792A1 (en) * 1996-07-19 1998-01-29 Hitachi, Ltd. Pump-turbine system

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