
多级泵站系统能耗的计算方法
董加新, 王智, 王玉川, 陈晓俊, 杨建国
多级泵站系统能耗的计算方法
Calculation Method for Energy Consumption of Multistage Pumping Station System
在总结多级泵站系统工作组合方式的基础上,推导了多级泵站系统固有能耗参数和实际能耗参数的计算方法,其中固有能耗参数是指多级泵站系统无分流情况下的能耗参数。以东雷抽黄灌区2019年冬季灌溉新民多级泵站系统的实测数据为例,讨论了固有能耗参数与实际能耗参数之间的关系,分析了水泵机组及泵站系统的运行情况。对于一个固定组成的多级泵站系统,各水泵机组性能稳定情况下固有能耗参数为一定值,其实际能耗参数随工况变化而变化,固有装置效率通常小于实际装置效率。水泵机组及泵站系统的能耗参数可作为运行状态监测、最优运行调度方案和节能改造的标准,同时也可为灌区水价的制定及灌区财政补贴提供依据。
On the basis of summarizing the working combination of the multi-stage pumping station system, the calculation methods of the inherent energy consumption parameters and the actual energy consumption parameters of the multi-stage pumping station system are derived, the inherent energy consumption parameters refer to the energy consumption parameters in the case of no diversion in the multi-stage pumping station system. Taking the measured data of the Xinmin system for 2019 winter irrigation in Donglei Yellow River pumping system as an example, the relationship between the inherent energy consumption parameter and the actual energy consumption parameter is discussed, and the operation of the pump unit and pumping station system is analyzed. For a fixed multi-stage pumping station system, the inherent energy consumption parameter is a certain value when the performance of each pump unit is stable, and its actual working efficiency varies with operating conditions. The inherent device efficiency is usually less than the actual device efficiency. The energy consumption parameters of the pump unit and the pumping station system can be used as standards for operating status monitoring, optimal operation scheduling and energy-saving transformation, and can also provide a basis for the formulation of irrigation district water prices and financial subsidies for irrigation districts.
多级泵站 / 系统能耗 / 能源单耗 / 能耗系数 / 计算方法 {{custom_keyword}} /
multi-stage pumping station / system energy consumption / energy unit consumption / energy consumption coefficient / calculation method {{custom_keyword}} /
图3 新民多级泵站系统图及T 1、T 2计算时段内系统1、2的水泵实际运行图Fig.3 Xinmin multi-stage pumping station system diagram and the actual operation diagram of the pumps of systems 1 and 2 during the calculation period of T1 and T2 |
表1 2019年东雷抽黄工程T 2时段内新民系统各级泵站实测参数表Tab.1 Measured parameters of pump stations at all levels of Xinmin system during T 2 period of Donglei irrigation Project in 2019 |
名称 | 实测参数 | 能耗参数 | ||||||||
---|---|---|---|---|---|---|---|---|---|---|
泵站名称 | 水泵编号 | 扬程/m | 流量/(m3·s-1) | 功率/ kW | 效率/ % | 能源单耗/ [kWh·(kt·m)-1] | 能耗系数/ (kWh·m-3) | 效率/ % | ||
新民二级站 | 1号 | 152 | 3.41 | 6 209.23 | 81.81 | 3.328 7 | 0.505 8 | 81.71 | ||
东洼三级站 | 3号 | 36 | 0.72 | 390.46 | 65.06 | 4.157 8 | 0.149 6 | 65.42 | ||
4号 | 36 | 0.70 | 311.38 | 79.31 | 3.428 6 | 0.123 4 | 79.33 | |||
5号 | 36 | 0.59 | 291.38 | 71.44 | 3.830 7 | 0.137 8 | 71.01 | |||
8号 | 36 | 0.56 | 277.23 | 71.27 | 3.795 9 | 0.136 6 | 71.66 | |||
黑池四级站 | 1号 | 26 | 0.67 | 295.62 | 57.75 | 4.730 7 | 0.123 0 | 57.50 | ||
3号 | 26 | 0.70 | 285.23 | 62.53 | 4.338 6 | 0.112 8 | 62.69 | |||
5号 | 26 | 0.59 | 198.15 | 75.87 | 3.599 9 | 0.093 6 | 75.56 | |||
坡里五级站 | 2号 | 27 | 0.68 | 279.42 | 64.39 | 4.248 3 | 0.114 7 | 64.03 | ||
4号 | 27 | 0.66 | 288.67 | 60.50 | 4.483 9 | 0.121 0 | 60.66 | |||
申庄六级站 | 1号 | 22.3 | 0.58 | 190.75 | 66.45 | 4.096 7 | 0.091 3 | 66.40 | ||
西王庄七级站 | 2号 | 32.5 | 0.22 | 102.86 | 68.15 | 3.996 1 | 0.129 8 | 68.07 | ||
3号 | 18.5 | 0.21 | 93.62 | 40.68 | 6.693 8 | 0.123 8 | 40.63 |
表2 T 2时段内各级泵站子系统及多级泵站系统实测数据和能耗计算结果表Tab.2 Table of measured data and energy consumption calculation results of various pump station subsystems and multi-stage pump station systems during the T 2 period |
泵站名称 | 实测参数 | 固有能耗参数 | |||||
---|---|---|---|---|---|---|---|
扬程/ m | 流量/ (m3·s-1) | 功率/ kW | 效率/ % | 能源单耗/ [kWh·(kt·m)-1] | 能耗系数/ (kWh·m-3) | 效率/ % | |
新民二级站 | 152 | 3.41 | 6 209.23 | 81.81 | 3.328 7 | 0.505 8 | 81.71 |
东洼三级站 | 36 | 2.57 | 1 270.45 | 71.37 | 3.805 7 | 0.137 0 | 71.47 |
黑池四级站 | 26 | 1.96 | 779.00 | 64.11 | 4.250 4 | 0.110 5 | 63.99 |
坡里五级站 | 27 | 1.34 | 568.09 | 62.41 | 4.364 8 | 0.117 8 | 62.32 |
申庄六级站 | 22.3 | 0.58 | 190.75 | 66.45 | 4.096 7 | 0.091 3 | 66.40 |
西王庄七级站 | 32.5 | 0.22 | 196.48 | 55.04 | 5.313 6 | 0.172 6 | 51.19 |
18.5 | 0.21 | ||||||
新民系统 | 295.8 | ‒ | 9 214.00 | 76.79 | 3.838 3 | 1.134 9 | 70.86 |
表3 T 1、T 2时段内系统1、2实测数据和T 1+T 2内新民系统实际能耗计算结果表Tab.3 Table of actual measurement data of systems 1 and 2 during T 1 and T 2 and actual energy consumption calculation results of Xinmin system in T 1+T 2 |
名称 | T 1时段实测数据 | T 2时段实测数据 | T 1+T 2时段 | |||||||
---|---|---|---|---|---|---|---|---|---|---|
总功率/ kW | 效率/ % | 能源单耗/ [kWh·(kt·m)-1] | 能耗系数/ (kWh·m-3) | 总功率/ kW | 效率/ % | 能源单耗/ [kWh·(kt·m)-1] | 能耗系数/ (kWh·m-3) | 效率/ % | 能源单耗/ [kWh·(kt·m)-1] | |
实际能耗参数 | 9 437.90 | 77.89 | 3.492 0 | 1.032 9 | 9 214 | 76.79 | 3.542 3 | 1.047 8 | 77.16 | 3.525 1 |
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