Study on influence laws of variable speed optimization of single unit with different speeds and discrete rules
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Abstract:
Increasing pro gr am co nv erg ence speed and impro ving the o pt imal solution precisio n are the impor tant content in the research of optim izat ion alg or ithms. According to the nonlinear o pt imization model of differ ent ty pes o f pum ps w ith var iable f re2 quency and speed at Jiangdu pump stat ion in the Easter n Route of South2to2Nor th Water Diver sion Project, the effects of deci2 sio n variable speed on the optimizatio n algo rit hms of different types o f pumps and different o per ation lo ad speeds w ere ana lyzed under var ious discr ete rules, including differ ent discr et e steps in the same discrete inter val, same discrete st ep in different dis2 cr et e int er vals, and different discrete steps in differ ent discr ete interv als. The r esult s showed that t he discr et e rule of differ ent discr et e steps in dif fer ent intervals under v ariable operation lo ads can sig nificantly increase the pr ogram conver gence speed ( pro2 g ram running time is reduced by 70%~ 75%) , and ensure the accur acy of optimization alg orithm with the bias of less than 01 25%.
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