Study On Operation Of Water Supply System Based On Immune Algorithm

Water supply system is one of the most important basal constructions in the city, sign of urban civilization, developed economy and modernization. Because of water supply system needing much electricity when it runs, it can save energy and operational costs through the implementation of optimal operation and contribute to the correct management of water resources. But there exists some problems, like long time of calculating, low speed of constringency and easily dropping into partial-best solution, when using traditional algorithm to solve the problem of optimal operation model. While immune algorithm is more advanced and better than traditional algorithm, therefore we can use immune algorithm to solve optimal operation model. Three constitutions are presented in this paper: theory of immune algorithm, first-class optimal operation and how to use immune algorithm to solve optimal operation model.Immune algorithm is a heuristic algorithm, good at solving optimal problem. This paper detailedly introduces the history and status of immune algorithm and analyses its biology elements, then gives immune algorithm of vector-distance and narrates how to design it.After entirely comparing all methods of water demand prediction, water network system model and water system optimal operation model, combining the reality of Maanshan City, this paper accepts correctional-floating-average means to predict water demand and water network system microcosmic model to calculate; water system optimal operation model chooses indirect model, while discussing the first-class optimal operation only, besides, gives how to design these models.This paper also introduces how to use immune algorithm to solve optimal operation model, i.e. identifying the antigen is least of cost of water producing and pumps'energy, then transacting restrict to the objective function, creating primal B cell to gain antibody, via calculating appetency between antigen and antibody, antibody and the other antibody, renovating the memorial/ restraining cell, at the same time accelerating and restraining the new B cell, from clone-choosing, across and aberrance creating the new B cell to get new antibody, afterward going to the next immune reaction, until satisfying the rule of end, namely finding the best solution.After collecting lots of operational data from waterworks of Maanshan City, from predicting Maanshan City daily water demand and using water network system microcosmic model to calculate, solving the first-class optimal operation by utilizing immune algorithm, this task obtains the best distribution of each waterworks'flux and water head. In this way, the optimal operation project is on the base of scientific prediction, and attained from computing, not the same as the project of experiential or calculated by traditional algorithm. Thus it is scientific, predicted and feasible.