Comprehensive weighted evaluation method of pump unit energy consumption

A weighted evaluation and pump device technology, applied in special data processing applications, complex mathematical operations, instruments, etc., can solve the problems of low loss rate of electromechanical equipment, short running time, unscientific basis, etc., and achieve the effect of saving energy costs

Inactive Publication Date: 2016-06-01
YANGZHOU UNIV
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Problems solved by technology

Under the determined head conditions of the pumping station, if the total pumping volume of the pumping station is the same, the energy consumption of the pumping station unit is the least and the efficiency of the pumping device is the highest. The energy consumption of the pumping station is the same, but the unit with a larger flow rate of the pumping station unit has a short running time, low l

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  • Comprehensive weighted evaluation method of pump unit energy consumption
  • Comprehensive weighted evaluation method of pump unit energy consumption
  • Comprehensive weighted evaluation method of pump unit energy consumption

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[0021] The present invention will be further elaborated below in conjunction with the drawings and embodiments.

[0022] A pump device energy consumption process such as figure 1 Shown.

[0023] The energy performance data of the existing four sets of pump installations does not include all the operating point data. Therefore, the method of step 1) above is used to construct the numerical function relationship between Q·η and H. The mathematical equation is as follows:

[0024]

[0025] In the formula: y=Q·η, x=H.

[0026] The Gauss-Newton algorithm is used to solve the regression constants and partial regression coefficients of the nonlinear regression equation, and the solution results are shown in Table 1. The coefficient of determination of each nonlinear regression equation is greater than 0.99, which meets the requirements.

[0027] Table 1 Coefficients of nonlinear regression mathematical equations

[0028]

[0029] On the basis of step 1), the multivariate non-linear mathematic...

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Abstract

Provided is a comprehensive weighted evaluation method of pump unit energy consumption, and belongs to the technical field of water conservancy projects. The method disclosed by the present invention comprises: based on a pump unit physical model test or a CFD numerical calculation result, selecting characteristic working condition data of a plumb unit, and when a lift of a plumb unit in the i working condition of the plumb unit is Hi, obtaining a value of Qi [Eta]i of the i working condition; using a pump unit group energy consumption calculation formula to deduce a single working condition energy consumption index P.E.I of pump unit energy consumption, and determining a P.E.I value of the i working condition of the pump unit; introducing days of the pump unit characteristic working condition for comprehensive weighted average, and determining weighting factors for different working conditions; and finally putting traffic, efficiency and operating days of different working conditions into a comprehensive evaluation index M.P.E calculation formula of the pump unit energy consumption, so as to obtain a comprehensive evaluation index of the pump unit energy consumption. The method disclosed by the present invention facilitates energy saving of an actual pump station, and saves energy costs of the pump station.

Description

technical field [0001] The invention belongs to the technical field of water conservancy engineering, and in particular relates to a comprehensive energy consumption evaluation technology for a pumping station operating under multiple working conditions. Background technique [0002] The average installation efficiency of large-scale irrigation and drainage pumping stations in my country is only 40% to 50%, and the average unit energy consumption reaches 7 to 8kW h / (kt m). ) The efficiency requirements of pump devices in Section 9.1.11 vary greatly. The actual operating conditions of many pump stations deviate significantly from the design conditions. The energy consumption of pump stations has become a hot issue in the field of water conservancy engineering. At present, in actual engineering, the selection of the hydraulic model of the pumping station generally only considers the efficiency of the pumping station in the design working condition. Station efficiency, choosing...

Claims

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Application Information

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IPC IPC(8): G06F19/00G06F17/18
CPCG06F17/18G16Z99/00
Inventor 杨帆刘超周济人赵浩儒夏臣智
Owner YANGZHOU UNIV
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