基于水厂变流变压曲线的高压变频器节能应用(续)

Construction of Water Supply Pipe Network Optimization Model and Energy Saving and Reducing Leakage Operation(Continued)

管网末端压力与水厂出厂压力相关,应用推断控制算法并基于宏观模型数据构建推断子模型,以推断末端压力,进而建立末端压力与出厂压力的关系模型,即水厂变流变压曲线模型(亦称管网压力控制曲线模型)。出厂流量输入模型,预测输出(控制)出厂压力,并推断(间接控制)末端压力恒定在规定范围,满足用户需要又无多余扬程。桂城水厂供水泵站变频控制泵群沿此曲线运行,调速泵和定速泵均节电运行,单耗降低了7.62%~10%,管网末端压力精度±0.002MPa。

The end-point pressure of the pipe network is related to the factory pressure of the water plant. The inferred control algorithm is used to construct the deductive sub-model based on the macroscopic model data to infer the end pressure, and then establish the relationship model between the terminal pressure and the factory pressure.(Also known as pipe network pressure control curve model). The factory flow input model predicts the output(control) of the factory pressure and inverts(indirect control) the end pressure constant within the specified range to meet the user's needs without any extra head.Guicheng water supply pump station frequency control pump group along this curve,speed pump and constant speed pump are energy-saving operation, unit consumption reduced by 7.62% to 10%, pipe network end pressure accuracy ± 0.002 MPa.