摘要
为提高风电场运行维护效率,以风力机为对象开展风力机单部件顺序维修优化研究.通过引入有效年龄的概念,考虑改善因子随维修次数的增加而降低的情况,分析最小维修、不完全维修和更换对风力机有效年龄的影响.考虑维护期内突发性维修成本、不完全维修成本、更换成本、停机损失和固定成本,将部件单生命周期划分为若干个维护期,以维护期个数和维护期时间间隔为决策变量,部件更换周期内单位时间维护成本最低为目标,建立可用度约束下的风力机单部件顺序维修优化模型.采用内点法和枚举法求解模型,完成算例分析,并验证模型的有效性.结果表明,与传统的周期维修和顺序维修相比,该模型求解得到的最佳维修计划可以保证风力机各部件的可用度均在98%以上,且维护期时间间隔更加符合工程实际.
To improve the efficiency of operation and maintenance of wind farms, the single part maintenance optimization problem of wind turbines was studied. The effective age was introduced to describe the reduction of improvement factors with the number of the maintenance, and the influences of minimal repair, imperfect repair and replacement on the effective age of the component were analyzed. The replacement cycle was divided into several maintenance periods. Considering the maintenance cost, downtime losses, fixed cost and availability, and taking the number of maintenance periods and the length of each maintenance period as variables, a sequential maintenance optimization model for single part was proposed with the goal to minimize the maintenance cost per unit time in a replacement period. The interior point method and the enumeration method were used to solve the model. A case study was given to prove the validity of the model. The results show that compared with the traditional periodical maintenance and sequential maintenance, the optimal maintenance plan obtained by the model can ensure that the availability of wind turbine components is above 98%, and the maintenance period is more in line with engineering practice.
作者
苏春
胡照勇
郑玉巧
Su Chun;Hu Zhaoyong;Zheng Yuqiao(School of Mechanical Engineering, Southeast University, Nanjing 211189, China;School of Mechanical and Electrical Engineering, Lanzhou University of Technology, Lanzhou 730050, China)
出处
《东南大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2019年第1期110-115,共6页
Journal of Southeast University：Natural Science Edition
基金
国家自然科学基金资助项目(71671035)
江苏风力发电工程技术中心开放基金资助项目(ZK15-03-01
ZK16-03-07)
兰州市人才创新创业资助项目(2018-RC-25)
关键词
风力机
可靠性
可用度
有效年龄
顺序维修
wind turbine
reliability
availability
effective age
sequential maintenance
