磁阀式可控电抗器晶闸管导通角控制策略

The Control Strategy of Thyristor Conducting Angle in Magnetically Controllable Reactor

研究了磁阀式可控电抗器的控制系统及其工作原理。提出了磁阀式可控电抗器晶闸管导通角的控制策略,利用线路检测电路、同步信号电路的拓扑结构,并利用单片机构建了微机控制系统。该控制系统采用闭环控制方式,通过其反馈部分来控制晶闸管导通角的大小以调节可控电抗器的容量。故控制系统使得磁阀式可控电抗器能够随着输电线路传输功率的变化而自动平滑地调节自身的容量,充分对输电线路进行无功补偿,为可控电抗器的工业应用提供了一定的理论依据。

The control system and the principle of magnetically controllable reactor（MCR） are analyzed. The control srategy of thyristor conducting angle in magnetically controllable reactor is introduced. A topololegy structure of line checking circuit and single - phase synchronous circuit is suggested. The microcomputer control system is proposed under single chip microcomputer. Closed loop control is used in this control system. To adjust the capacity of MCR, thyristor conducting angle can be regulated under feedback line. In this control system, the capacity of MCR changes automatically following transmission power of line and reactive power can be compensated effectively. The control system helps the theoretical guidance of the application of MCR in industry.