摘要
在进行水电机组效率评估时需实测水轮机流量,在许多实际系统中,受条件限制,流量无法准确测量。依据几何断面与流量的关系,建立了水电机组的流量模型,并提出一种基于流量模型的效率监测与评估方法。基于流量模型可以由水轮机相关运行参数计算水轮机的流量,再通过实测机组出力计算机组相对效率,从而实现对机组效率的监测与评估,以指导水电机组的经济与安全运行。
Turbine flow must be measured during the efficiency evaluation of hydropower units,and in many actual systems,flow can not be accurately measured because the measurement conditions are limited. Based on the relationship between geometric section and flow,this paper establishes the flow model of hydroelectric unit and proposes a method of efficiency monitoring and evaluation based on flow model.Based on the flow model,the flow of the turbine can be calculated by the relevant operating parameters of the turbine,and then the relative efficiency of the turbine can be calculated by the actual output of the turbine to monitor and evaluate the efficiency of the turbine so as to guide the economical and safe operation of the hydroelectric units.
作者
尚欣
程远楚
安浩
郭欣然
SHANG Xin;CHENG Yuan-chu;AN Hao;GUO Xin-ran(Key Laboratory of the Ministry of Education of the Transition Process of Hydraulic Machinery,Wuhan 430074,Hubei Province,China;School of Power and Mechanical Engineering,Wuhan University,Wuhan 430074,Huhei Province,China)
出处
《中国农村水利水电》
北大核心
2018年第8期212-214,共3页
China Rural Water and Hydropower
关键词
水电机组
流量模型
相对效率
在线监测
状态评估
hydropower unit
flow model
relative efficiency
on-line monitoring
state assessment
