专利内容由知识产权出版社提供
专利名称：Water level regulating system发明人：Takeda, Kenzo,Kurotani, Kenichi, c/o Fuji
Electric Co., Ltd.
申请号：EP93117500.4申请日：19931028公开号：EP0616277A2公开日：19940921
专利附图：
摘要：A water level regulating system controlling the water level of a head tank ofeach of a plurality of hydroelectric plant installed in cascade along a stream by using anopening of guide vanes (201, 203) of a hydraulic turbine (202, 204) as a manipulated
variable, and the water level of the head tank as a controlled variable. Each hydroelectricplant has a water level regulator (100A, 100B) constituting the water level regulatingsystem. Each of the water level regulator (100A) of an upstream hydroelectric plant andthe water level regulator (100B) of a downstream hydroelectric plant has a device (103,106) varying PID parameters for controlling the water level in accordance with theopening (φ₁, φ₂) of the guide vanes (201, 203), and a device (101, 104) varying a referencewater level (Sv1', Sv2') to a set water level (Sv₁, Sv₂). The downstream water levelregulator (100B) further includes a feedforward compensating element (107) whichcompensates a feedforward signal corresponding to the opening (φ₁) of the guide vanes(201) of the upstream hydroelectric plant, and which varies its compensation
characteristic by the opening (φ₂) of the guide vanes of the downstream hydroelectricplant. This arrangement makes it possible to quickly stabilize the water level of the headtank which may vary owing to changes in the operating state of the turbines or in anintake volume.
申请人：FUJI ELECTRIC CO., LTD.
地址：1-1, Tanabeshinden Kawasaki-ku Kawasaki-shi Kanagawa 210 JP
国籍：JP
代理机构：Tiedtke, Harro, Dipl.-Ing.
更多信息请下载全文后查看
