二滩电站机组经济运行组合方式研究

Research on Units Economic Operating Combination Mode for Ertan Hydropower Plant

发电耗水率是衡量水电站经济运行情况的重要指标,主要影响因素有水头、机组出力、振动区等。在理论上分析耗水率的影响因素,结合二滩历史运行数据对比分析1、2号尾调室水位,以不同水位下总过机流量最小为目标函数,从有效提高利用发电水头的角度,研究3、4、5台机的经济运行组合方式,为机组经济运行有效降低机组耗水率提供参考依据,提高机组经济运行水平。

The generator water consumption rate is an important indicator for the economic operation, with the main influencing factors like head, the output of the units, and vibration areas of the units etc. In this paper, the factors of water consumption rate is analyzed theoretically, and comparison between NO. 1 and NO. 2 tailrace surge chamber water levels based on the historical operating data is made in order to take the Minimum value of total flow through turbine in different water level as objective function,from the angle of head to study the optimal operational association mode about three, four and five operating generators. The experiment provides reference to reduce water consumption rate, and to improve the economic operation level.