抽油机智能控制系统的设计与实现

The design and implementation of intelligent pumping unit control system.

为了实现油田对节能降耗的要求 ,研制了以单片机为核心的可控硅移相触发控制的低成本抽油机控制系统。该系统由电量传感器、可控硅模块、单片机系统、A/D和D/A转换器等组成。在空气开关和可控硅模块之间设计了三相电的相序和缺相检测电路 ,检测抽油机供电情况 ;通过D/A转换器的输出电压控制可控硅模块的移相触发相位 ,实现电动机的软启动、软停机 ,调整电动机输出功率 ,达到节能降耗的目的。该系统具有较高的性能价格比和较好的功能扩充性。在大庆油田采油五厂历时一周的试验表明 ,系统设计原理正确 ,工作可靠 ,具有明显的节能效果。

In order to meet the need of reducing power consumption in oil fields, an intelligent pumping unit control system is developed. The system is comprised of sensors, silicon controlled module, single-chip microcomputer system, A/D and D/A converters. The operating principle and main functions of the system are described, the hardwares and softwares of the system are introduced, and the operating procedure is given. Test in Daqing Oilfield shows that, by using this intelligent control system, the electric motor on the pumping unit can be started and stopped softly, the power output can be regulated on real bine with the change of the load, and obvious power-saving effect is achieved.