油田抽油机用感应电动机调压节能控制策略的研究  

Variable-voltage Energy Saving Strategy for Three-phase Induction Motor in Oil Pump jacks

作　　者：朱常青[1] 王秀和[1] 申宁[1] 张鑫[1] 张承慧[2] 

机构地区：[1]山东大学电气工程学院,济南250061 [2]山东大学控制科学与工程学院,济南250061

出　　处：《自动化学报》2007年第7期749-752,共4页Acta Automatica Sinica

基　　金：国家自然科学基金(50477042);山东省自然科学基金(Y2004F09)资助~~

摘　　要：针对油田抽油机负载变化频繁,其对应的配套感应电动机经常处于轻载状态,效率低,电能浪费大的特点,分析了电机的效率与负载大小的关系,探讨了调压节能的可行性,推导了最佳调压系数与负载及电机参数间的数值关系,提出了调压节能策略．该方法为抽油用三相感应电动机提高效率,降低用电成本提供了理论依据．实验结果证明该方法是正确有效的．As the loads of oil pump in oil field are changing frequently, a three-phase induction motor that drives the loads often operates under light-load conditions. As a result, the efficiency of the system is low and electric energy is wasted greatly. This paper discusses the possibility of adjusting voltage for the purpose of energy saving, deduces the optimal variable-voltage coefficient and gives a variable-voltage energy saving strategy for the induction motor. The strategy lays a theoretical foundation for efficiency improvement and cost reducing of induction motor in operation. The correctness of the method has been proved by experimental results.

关 键 词：节能 感应电动机 油田 调压 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]