| 摘要 |
A method of stopping a multi-stage hydraulic machine with an inlet valve, highest and lowest stage movable guide vanes, and a return passage connected between flow passages of respective stages, wherein the machine is in turbine operation, including the steps of initiating the closing of the highest stage movable guide vanes firstly and the lowest stage movable guide vanes secondly and judging whether a closing relation between the highest and lowest stage guide vanes is normal or not in accordance with predetermined criteria. The method includes the steps of controlling the closing of the lowest stage movable guide vanes based on the judgment result, and the step of closing the inlet valve. |
