蟠龙抽水蓄能电站相继甩负荷时间敏感性分析

Sensitivity Analysis of Successive Load Rejection Time of Panlong Pumped-storage Power Station

一洞多机布置的抽水蓄能电站,一台机组甩负荷时,可能会诱发相继甩负荷工况。以重庆蟠龙抽水蓄能电站为例,针对典型工况进行了相继甩负荷时间敏感性分析。计算结果表明,以相继甩负荷工况作为控制工况,对尾水管出口的最小压力影响最为敏感,且最不利工况的发生时间间隔并不相同。

Successive load rejection may be occurred when one pump-turbine rejects its load under the layout of several pump- turbines with one diversion tunnel in a pumped-storage power station, Taking Panlong Pumped-storage Power Station as study case, the time sensitivities of successive load rejection under typical operating conditions are analyzed. The results show that, when taking successive load rejection operation condition as control condition, the most sensitive parameter is the minimum pressure distribution in the outlet of draft tube, and the interval time of the most dangerous operation condition is not certain.