CAJ | 학술논문

针对导水机构水力损失对水轮机效率影响较大，且其模型较为复杂的特点，提出了一种基于曲线拟合的导水机构水力损失表达方法，建立了水轮机精细模型；并采用改进人工鱼群算法对模型进行辨识。将该方法运用于某电厂实测数据，仿真结果表明改进水轮机模型精度高，且可以反映电厂实际运行状态，导水机构水力损失辨识结果与理论公式定性分析一致，并采用功率阶跃扰动对模型进行验证。结果表明模型是有效可靠的。
침대도수궤구수력손실대수륜궤효솔영향교대，차기모형교위복잡적특점，제출료일충기우곡선의합적도수궤구수력손실표체방법，건립료수륜궤정세모형；병채용개진인공어군산법대모형진행변식。장해방법운용우모전엄실측수거，방진결과표명개진수륜궤모형정도고，차가이반영전엄실제운행상태，도수궤구수력손실변식결과여이론공식정성분석일치，병채용공솔계약우동대모형진행험증。결과표명모형시유효가고적。
In view of the great influence of the distributor”s hydraulic loss on the efficiency of the hydro-turbine,and plus the complexity of the hydraulic loss model,a method based on curve fitting is proposed to express the hydraulic loss of the distributor,and a detailed hydro-turbine model is developed.The improved artificial fish swarm algorithm(IAFSA)is used to identify the model.This method is applied to the data of a hydropower station.The simulation results show that the improved hydro-turbine model has a high accuracy and can reflect the actual running state.The identified results on the hydraulic loss of the distributor is identical to the theoretical formula analysis.The model is validated by the power step disturbance method,the results showing that it is reliable and accurate.