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| Optimization and regulation control of pump units based on differential characteristics |
| YAN Jing1,2, ZHANG Zhao2*, WEI Wentao3, SI Qiaorui1, LI Yueqiang4, XUE Ping5,GAO Zhongyang1,2, DU Mengying1,2 |
| 1. National Research Center of Pumps, Jiangsu University, Zhenjiang, Jiangsu 212013, China; 2. China Research Institute of Water Resources and Hydropower, Beijing 100038, China; 3. School of Water Conservancy and Hydroelectric Power, Hebei University of Engineering, Handan, Hebei 056038, China; 4. College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing, Jiangsu 210098, China; 5. College of Computer and Information, Hohai University, Nanjing, Jiangsu 210098, China |
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Abstract In order to effectively reduce the scheme error of the pumping station due to the deviation of the theoretical pumping unit efficiency from the actual situation, on the basis of the clustering method, the characteristic curves of the pumping units in the pumping station were corrected by using the histo-rical monitoring data. At the same time, the results of the correction were applied to the pumping station optimization and scheduling model, and the optimization and scheduling model of the pumping station based on the pumping units with different characteristics would be constructed to achieve the intelligent preference optimization and control of the pumping units in the station. The results of the study show that the theoretical pumping unit efficiency after the calibration curve is 18.8% higher than the accuracy before the calibration, which is more in line with the engineering practice. Compared with the manual empirical scheduling scheme, the energy consumption of the optimization scheme of the pumping unit with different characteristics based on the calibrated curve is reduced by an average of 9.08%, and costs by an average of 3.59%, which is superior to the manual empirical scheduling. Comparison of the corrected performance curves of multiple pumping units found that, due to the installation location, cumulative operating hours and wear and tear, resulting in differences in the pumping efficiency of the pumping unit of the same type of pumps in the pumping station, with a maximum deviation of 14.63%. This demonstrates that the pumping station cannot directly divided into the optimal distribution of the flow rate for long periods of time, which further proving the necessity of the research on the differential characteristics of the pumping unit.
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Received: 13 February 2023
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