文章对轮胎厂密炼机系统的无功问题及谐波现状进行了分析,并分析了密炼机负荷的运行特点及谐波危害性.通过实例测量,提出了有效的治理措施以及获得的效果.“,”This paper aims at analysis of the reactive compensation problems and current harmonics situation of an internal mixer in tire plant, and operation characteristics of mixer as well as harm of harmonics wave. Effective measures also raised by practical measurement and its result.