梯级电站联合发电模型(上)——水能发电量计算方法探讨  

Co-generation model of cascaded hydropower plants(Part 1)—a method to calculate hydro-energy generating capacity

作　　者：吴杰康[1] 辛保江[1] 李杰科[1] 

机构地区：[1]广西大学电气工程学院,广西南宁530004

出　　处：《水利水电科技进展》2010年第3期1-4,共4页Advances in Science and Technology of Water Resources

基　　金：国家自然科学基金(50767001);国家高技术研究发展计划(2007AA04Z197);高等学校博士学科点专项科研基金(20094501110002);广西高校百名中青年学科带头人资助计划(RC20060808002);广西壮族自治区教育厅科研项目(200808MS150);广西壮族自治区研究生教育创新计划(105930901001105930904068)

摘　　要：根据水库的特性将水体按高程划分为3层水体,建立二次曲线型三层水体模型。考虑水体质量和水体重心,分析水库水体压力和分层水体微元在压力管道轴线方向的重力分量,对引水管入口处水体进行力学分析。最后通过计算3层水体的重力对水体微元在管道轴线方向的压力做功、压力管道进水管和出水管处的水体微元压力做功、重力做功及其动能和势能构建水电能源形成模型。结果表明,采用微元法对水库水体分层建模,能够比较准确地描述水电能源的形成过程。According to the characteristics of reservoirs,the water body was divided into three layers.A quadratic curve three-layer water body model was established.Considering its gravity and the center of gravity,the mechanical analysis of the water body at the inlet of conduit was performed through the analysis of water pressures and the gravitational components of layered water body in the axial direction.A hydropower energy generation model was proposed by calculating the work of water micro-elements in the axial direction of the conduit and the work of water micro-elements at the inlet and outlet of the pressure conduit by the gravity of the three-layer water body as well as its kinetic and potential energies.The results show that the layered model for the water body of reservoirs by use of the micro-element method can accurately represent and describe the generation process of hydropower energy.

关 键 词：梯级水电站 水能发电量 水库分层水体 力学分析 

分 类 号：TV72[水利工程—水利水电工程]