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- W1985838610 abstract "In load rejection transient process, the sudden shut down of guide vanes may cause units speed rise and a sharp increase in water hammer pressure of diversion system, which endangers the safety operation of the power plant. Adopting reasonable guide vane closure law is a kind of economic and effective measurement to reduce the water hammer pressure and limit rotational speed increases. In this paper, combined with Guangzhou Pumped Storage Power Station plant A, the load rejection condition under different guide vanes closure laws is calculated and the key factor of guide vanes closure laws on the impact of the load rejection transition process is analyzed. The different inflection points, which are the closure modes, on the impact of unit speed change, water level fluctuation of surge tank, and the pressure fluctuation of volute inlet and draft tube inlet are further discussed. By compared with the calculation results, a reasonable guide vanes inflection point position can be determined according to security requirements and a reasonable guide vanes closure law can be attained to effectively coordinate the unit speed rise and the rapid pressure change in the load rejection transient process." @default.
- W1985838610 created "2016-06-24" @default.
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- W1985838610 date "2013-12-20" @default.
- W1985838610 modified "2023-10-15" @default.
- W1985838610 title "Analysis on influence of guide vanes closure laws of pump-turbine on load rejection transient process" @default.
- W1985838610 doi "https://doi.org/10.1088/1757-899x/52/7/072004" @default.
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