基于变权云模型的灯泡贯流式水轮机状态评估方法

State evaluation of bulb tubular turbine unit based on variable weight cloud model

为了对灯泡贯流式水轮机的运行状态做出客观评价,基于云模型提出了灯泡贯流式水轮机状态评估的多重指标体系,并建立了部件级-设备级的多层灯泡贯流式水轮机综合评估模型.通过引入云理论直接得到各指标对贯流式水轮机各状态等级的隶属度,从而列举出每个设备的隶属度矩阵,并结合变权理论来确定各指标的组合权重,再由加权平均算子转化为对应的评分,即得到了灯泡贯流式机组的运行健康状态.结合实例研究发现,此方法简单易行,可操作性强,在水轮机部件级评估方面较传统方法更加准确,为灯泡贯流式水轮机状态检修工作提供了新的途径.

In order to make an objective evaluation on the operation state of the bulb tubular turbine,a multiple-index system for its state evaluation was proposed based on cloud model,and a multi-layer comprehensive evaluation model of bulb tubular turbine at component level and equipment level was established.By introducing the cloud theory,the membership degree of each index to each state level of tubular turbine was directly obtained,and the membership matrix of each equipment was listed.Combined with the variable weight theory,the combined weight of each index was determined,and then the weighted average operator was transformed into the corresponding score,and the health state of bulb tubular turbine was obtained.Combined with the case study,it is found that this method is simple,easy to operate,and more accurate than the traditional method in turbine component level evaluation,which provides a new way for condition based maintenance of bulb tubular turbine.