摘要
从水电站压力钢管取水对发电机组出力的影响问题,本文建立了带水力发电机组的有压给管网恒定流数学模型-总体矩阵法,阐述了总体矩阵的构成、机组边界的处理及系统总体方程的求解方法。基于总体矩阵法编制了计算机程序,结合供水工程参数计算了水厂从水电站压力管道取水前后机组发电水头、工作流量及出力的相对变化率,结果表明水厂取水对机组出力影响较小。
The global matrix method,a new mathematical model of pressure water supply network with hydropower units,is established in this paper to study the influence of drawing water form pressure steel pipe of hydropower station on units output.This paper also elaborates the methods of constructing global matrix,processing unit boundary condition,and solving global equations.Based on the global matrix method,a computer program is programmed to calculate the relative change of head,discharge and output of the unit,according to the specific parameters of the water supply project.The result shows that the influence of drawing water form pressure steel pipe of the hydropower station on the unit output is relatively small in the water supply project.
出处
《吉林水利》
2016年第7期31-34,共4页
Jilin Water Resources
关键词
给水管网
水力发电机组
总体矩阵法
数学模型
water supply network
hydropower unit
global matrix
mathematical method
