To ensure the safe, stable and economic operation of a hydroelectric generation set, its monitoring and fault diagnosis are necessary.

为了确保水电机组的安全稳定和经济运行，需要实现对水电机组的监测与故障诊断。

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In this thesis, hydroelectric generation set as main object of search, to get operation mode of hydroelectric generation set, develop a set of program.

以状态监测为基础的水电厂主要设备维修方式也得到了厂家的重视。

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Short term optimization of hydroelectric generation is a procedure problem and should be solved by the variational method of functional extreme value, i. e. , the famous Eulerian equation.

短期水电优化是过程问题，应该用泛函极值的变分法即欧拉方程求解。

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Up to now, those scale economies of fuel efficiency and of capital cost in these large generating units have been so great as to be able to absorb the additional cost of transmission and distribution and still be lower than any competing form of electrical generation (except of course where plentiful hydroelectric generation could be built).

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However, as British Columbia is proving, hydroelectric power generation is not limited to just dams.

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Aggravating the situation in California is an extreme drought in the Pacific Northwest, which is expected to reduce hydroelectric power generation.

CNN: graphic