摘要
在现行水利技术标准中,水电站发电流量存在单机流量、功率和总流量、总功率两种计算方法,两方法需分别建立单机功率—效率关系和总功率—效率关系。实际工作中发现采用发电机组的总流量和总功率计算的结果无法建立总功率—效率关系;当固定的几台机组运行时,可以把它们的总功率、总流量作为一组单机数据参加计算,建立固定机组的功率—效率关系曲线,通过查线、计算,从而推求发电流量。因此,单机流量、功率计算公式即可适用于各类电站的各种情形,没有单独提出总流量、总功率计算公式的必要。
The water discharge of the hydroelectric power station can be calculated by either single-machine discharge and power or total discharge and total power under the existing technical standards of water conservancy. In the two methods, the single-machine capacity and efficiency curve and total power capacity and efficiency curve need to be established respectively. It was found that the total flow and efficiency curve could not be established via the latter. Meanwhile, The total flow and efficiency of some generator sets which were often operated in fixed groups could be treated as single-machine parameters for their water discharge computation and the water discharge could be deducted via looking over curves and calcula- tion. As a result, the single-machine flow efficiency formulas are suitable to any type of water discharge calculation of hydroelectric power stations in all cases. It is no need to have total flow efficiency formula presented independently in technical standards.
出处
《人民黄河》
CAS
北大核心
2012年第8期117-119,共3页
Yellow River
关键词
发电流量
计算方法
单机功率-效率关系
power generation flow
calculation method
single-machine capacity and efficiency curve
