04920277 is referenced by 21 patents and cites 12 patents.

A variable speed hydro-power plant includes a pump turbine (2) having a S-shaped characteristics at the turbine operation. A current time turbine operating point is grasped on a turbine characteristics diagram of the pump turbine (2). A limit operation characteristics curve (nr) of the pump turbine (2) is formed in advance so as to not reach the S-shaped characteristics turbine operation region. A reach of the limit operation characteristics curve (nr) is detected, a rotating speed (N) of the pump turbine (2) is lowered. An inrush of the pump turbine (2) into the S-shaped characteristics turbine operation region is eliminated, so the continuation of a stable and reliable turbine operation can be guaranteed.

Title
Control system for a variable speed hydro-power plant apparatus
Application Number
7/230434
Publication Number
4920277
Application Date
August 10, 1988
Publication Date
April 24, 1990
Inventor
Eizo Kita
Kyoto
JP
Hiroto Nakagawa
Osaka
JP
Takao Kuwabara
Hitachi
JP
Agent
Fay Sharpe Beall Fagan Minnich & McKee
Assignee
Kansai Electric Power Co
JP
Hitachi
JP
IPC
F01D 15/10
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