抽油电机无功动态补偿方案的研究

THE RESEARCH ON DYNAMIC COMPENSATION PLAN TO A MOTOR FOR PUMPING OIL

根据抽油电机的工作特性,提出了无功动态补偿新技术方案。分析了供电系统与抽油电机的电气特性,利用坐标变换,将三相瞬时电压、电流转换到α-β平面,得到瞬时虚功率。用电容补偿瞬时无功功率,从而达到提高瞬时功率因数,节约电能的目的。

This paper will put forward a new technical plan which is concerned with dynamicreactive power compensation according to the characteristic of an electric motor forpumping oil. First, the characteristic of a power supply system and the motor is anal-ysed, then in terms of coordinate alternating, three-phase intantaneous electric currentand voltage are varied onto α-β plane, thus intantaneous imaginary power is gained. Atlast, electric capacity is made use of to compensate the imaginary power, so that powerfactor can be raised and electric power can be saved.