大中型水电站额定水头选择探讨

Discussion on rated head selection of large and medium hydropower station

水电站额定水头是水轮机组发额定容量时相应的最小水头,其选择是一个技术、经济等综合性问题。最佳的额定水头必须在满足稳定的前提下,通过经济技术综合比较,分析水轮机预想出力降低对电力系统平衡的影响等综合分析确定。文章重点介绍了大中型水电站额定水头的选择方式、方法。

The rated head of hydropower station is the corresponding minimum head with reaching the rated capacity of hydraulic turbine set. The selection of rated head is a technical and economic and comprehensive problem. Under the premise of meeting the stability condition, the rational rated head is determined by the technical and economic comprehensive comparison and analysis of the influence of turbine expected output decrease on balance of electric power system. The paper mainly introduces the selection mode and method of rated head selection for large and medium hydropower station.