针对抽水蓄能电站过渡过程独特的水力特性。应用调速器的水位监控性能,实现水头的实时采集。根据宁海抽水蓄能电站为例,研究了在最大水头、额定水头、最小水头下机组甩负荷后导叶关闭规律对抽水蓄能电站的过渡过程影响,通过对各水头下过渡过程分析计算。结果表明：当机组运行水头大于额定水头低于最大水头之间,宜采用延时直线关闭规律；水头低于额定水头时,宜采用简单20s直线关闭规律,可有效改善蜗壳与尾水管压力,降低机组甩负荷时的运行风险。
Abstract
According to the unique hydraulic characteristics of the transition process of pumped storage power station,application of governor water level monitoring performance,real -time collection of head is achieved． Taking the Ninghai Pumped Storage Power Station for an
example,this paper studies the influence of closing laws of guide vane on transient process under the maximum head,the rated head,and the minimum head． The results show that when the head of the unit is larger than the rated head below the maximum head,it is advisable to adopt
the delay line closing law． When the head is lower than the rated head,it is necessary to adopt the 20s single-slope closing law． It can effectively improve the spiral case pressure and the draft tube presure,reduce the unit load rejection when the load shedding operation
关键词
抽水蓄能电站 /
可逆机组 /
调速器 /
水力过渡过程 /
自适应导叶关闭规律
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