天生桥二级水电站水库汛期水位运行方式调整分析

Analysis on Water Level Operation Mode Adjustment for Phase-Ⅱ Tianshengqiao Hydropower Station in Flood Season

由于天生桥一级水电站的兴建,天生桥二级水电站运行条件发生了较大变化,使原设计的水库运行原则不再适合实际运行的需要,为了确保电站安全经济以及合规合法的运行,提高水能利用率。管理单位分析了汛期水位运行方式调整的必要性以及调整后的影响分析。证明电站汛期运行水位调整对自身安全有利,对上下游电站安全无影响,新增淹没土地较少,对梯级总发电量有所增加。

Due to the construction of Phase-I Tianshengqiao Hydropower Station,the operation conditions of Phase-Ⅱ Tianshengqiao Hydropower Station changes a lot,which makes the designed operation principle of phase-II station no longer suitable for the practical operation needs.Therefore,the utilization ratio of water energy shall be improved in order to ensure safe,economical and legal operation of the phase-II station.The management company analyzes the necessity and effect of adjustment on flood season water level operation mode.It is proved that the adjustment for phase-II station nearly has no effect on the security of the upstream and downstream stations but it is favorable to its own safety,which increases small submerged land but great overall power output.