灌溉泵站流量调节及变频调速节能效益分析

为提高水泵机组运行性能和灌溉供水效益,根据水泵运转关联性函数,联合流量调节变频调速特性,对筛珠洞灌区三级泵站技改方案进行评估分析,并确定与工程实际相匹配的流量调节控制策略。结果表明:变频器智能运算生成与灌溉需水量相符的电源频率,经水泵转速改变实现管阻特性不变条件下的流量动态准确调节。通过合理更新升级改造,水泵机组电能转换效率和自动化控制水平得到全面提高,流量调节响应快,动作可靠性高,供水用电单耗降低。

Analysis of flow regulation and frequency control energy-saving efficiency of irrigation pump

In order to improve the operational performance and water supply benefits of pump unit after transformation, based on pump running correlation function and flow governing characteristic by frequency conversion, the assessment and analysis of technical transformation program for the three-level pumping station in Shaizhudong Irrigation District has been done, and the water-pump control tactics which has good matched with actual project has been confirmed. The designing application shows that the power frequency signal generated by inverter intelligent operation can match irrigation water demand, and through frequency to realize speed change can dynamically and accurately adjustment water flow under no changing tube resistance characteristics. After reasonable technological transformation, the power conversion efficiency and automation control level is improved. The operating energy consumption has been reduced with fast response of flow adjustment and high reliability operation. The pump station can realize the aims of energy conservation and consumption reduction at the same time of technical upgrading.