secondary controller

The secondary monitor system includes three parts: the control of switches, the local monitor and the remote monitor. We select the SIEMENS PLC as its controller and the touch panel as the local monitor and its remote monitoring is done by fiber communication.

二次监控系统包括开关控制、本地监控、远程监控三个部分，它选用西门子PLC作为控制器，触摸屏作为本地监控设备，并通过光纤通讯完成远程监控。

Through intelligent control of power electronic power converter controller, transformer reactor can change the secondary winding current, thus changing the reactor can be a transformer winding current to achieve impedance variable.

通过智能控制器控制电力电子功率变换器，改变可变电抗器二次绕组的电流，从而改变可变电抗器的一次绕组的电流，实现阻抗可变。

The master control unit can adjust dynamically setpoint of the secondary one according to the real-time control error. Consequently, the controller can eliminate control error quickly and stably.

一级控制单元根据控制偏差的大小，动态调整二级控制单元的设定值输入，从而能够迅速、稳定地消除控制偏差。