| 摘要 |
An existing water-lifting pump is converted into a reversible pump-turbine which functions as not only a water-lifting pump, but also a pump-turbine capable of generating electric power. An existing pump runner is modified or replaced with a replacement runner. Movable guide vanes are disposed, or the rotational speed of the runner is increased. Alternatively, water passages in the stationary parts are modified. A pumping station can be given with the function as an urgent power plant in the event of an electric power shortage. A converted pump-turbine having good pump-turbine characteristics can be economically obtained.
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