游梁式抽油机无功功率动态补偿方案探讨

Dynamic compensation of wattless power of beam pumping units

针对抽油机用电动机无法满负荷运行和功率因数偏低问题 ,提出了一种用于提高功率因数的抽油机无功功率动态补偿装置。这种装置以AT89C5 5WD单片机为核心 ,自动完成异步电动机运行参数的测定、运算及功率因数自动补偿控制。在电抗器的励磁回路中加入直流励磁电流 ,通过改变励磁电流来调节电感电流 ,改变补偿容量 ,最终达到无级平滑动态补偿的效果 ,与传统的TCR补偿方案相比 ,新提出的补偿方案在现场具有较强的实用性。

In the light of the low power factor of the motor on pumping unit, a wattless power dynamic compensation device for improving the power factor is presented. Taking AT89C55WD as its core component, the device can carry out automatically determination and calculation of the operation parameters and automatic compensation of the power factor of the asynchronous motor. The design principle of the system is expounded. Compared with the traditional TCR compensation scheme, the new compensation more practicable.