关键词: 抽水蓄能电站, VOF, 同发同抽, 数值模拟

Abstract: The different hydraulic units of pumped storage power station being in the state of power generation and pumping operation at the same time is a major innovation in operation and dispatching mode. In this paper, taking the reservoir of a pumped storage power station as an example, the flow pattern and the hydraulic characteristics in the downstream reservoir under condition of power generation and pumping simultaneously are calculated and simulated by three-dimensional VOF mathematical model. The analysis shows that under condition of power generation and pumping simultaneously, the local flow pattern near the inlet/outlet of the reservoir area is basically the same as the single operation condition. But a water flow channel is formed between the inlet/outlet, and a large horizontal flow is formed in the reservoir area. With its influence, the head loss in the condition of power generation and pumping simultaneously is slightly larger than that of power generation or pumping only.

Key words: pumped storage power station, VOF, simultaneous power generation and pumping, numerical simulation