梯级调水泵站变频运行工作点的确定方法研究

发布时间：2018-03-28 20:24

本文选题：梯级泵站　切入点：变频调节　出处：《水泵技术》2017年03期

【摘要】：梯级调水泵站多采用变频调节以满足上下级流量匹配,针对变频调节工作点较难确定的问题,提出了一种确定梯级调水泵站变频运行工作点的方法。以延安黄河引水工程某泵站为例,文章依据比例律原理在水泵特性曲线基础上求得变频特性曲线;按照工作点扬程相等原则,利用图解法取得工频和变频对应流量点,进一步得到水泵并联特性曲线;针对该泵站绘制不同台数水泵并联管路特性曲线,最终确定多个工况水泵运行工作点。与工频运行工况点相比,变频运行扩大了泵站流量运行范围。本文为类似泵站机组选型和水力计算提供了借鉴。
[Abstract]:Cascade water transfer pumping stations usually adopt frequency conversion regulation to meet the matching of upper and lower flow, aiming at the problem that the working point of frequency conversion regulation is difficult to determine. This paper presents a method to determine the operating point of frequency conversion operation of cascade water transfer pumping station. Taking a pump station of Yanan Yellow River diversion Project as an example, the paper obtains the frequency conversion characteristic curve based on the principle of proportion law and the characteristic curve of pump. According to the principle of equal head of working point, the corresponding flow points of power frequency and frequency conversion are obtained by using graphic method, and the parallel characteristic curve of pump is further obtained. Compared with the power frequency operating conditions, the frequency conversion operation expands the flow range of the pump station. This paper provides a reference for the similar pump station unit selection and hydraulic calculation.
【作者单位】：陕西省水利电力勘测设计研究院;北京航天动力研究所;
【分类号】：TH38

【参考文献】