串行接口在嵌入式低压无功补偿控制中的应用

针对以往低压无功补偿系统的控制思想及实际运行效果,阐述了一种运用串行接口电路设计的嵌入式动态无功补偿控制应用系统,介绍了系统无功检测控制原理、控制系统硬件电路设计及软件实现。系统设计中采用串行接口集成电路来实现数据采集、显示驱动、数据存贮及输出驱动,使系统结构简单,可靠性高;系统控制方案以电压和无功缺额作为判据,彻底克服了投切振荡及过补偿问题,实现了电网无功功率的最大限度补偿。经实际试投运表明,系统方案设计合理,工作性能良好。

Application of Serial Interface in Embedded Control for Low-voltage Reactive Compensation

Aiming at the controlling means and running impacts of the former low-voltage reactive compensation sys-tems ,the paper sets forth an application system of higher accuracy reactive compensation control based on serial inter-face,and introduces the principle of measure and control,hardware and software in the system.In the design of system,all of the interface circuits,including A/D converter,display driver,data memory and output driver,adopt the integration circuits with serial peripheral interface.The scheme of control system takes voltage and lacking reactive as a criterion,overcomes the operating surge and over-compensation and realizes higher precision compensation for reactive in the electric power networks.This way simplifies the configuration and improves the reliability of system.In fact,the test has proved the design of system is in reason and the performance of control is all right.