For the voltage controlled system model, pole point method is taken to design the PID controller, and good result is achieved.

对于电压控制对象模型，采用极点配置的方法设计PID控制器，均取得了较为满意的控制效果。

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The elements to be controlled include system frequency tie line flows line currents equipment loading and voltage.

所要控制的要素包括系统频率、联络线潮流、线路电流、设备的负荷和电压。

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Based on compensation concept, the principle of this system is analyzed by utilizing the controlled voltage source and controlled current source model of a transformer.

基于补偿原理，利用变压器的受控电压源和受控电流源模型，分析了该系统的稳压原理。

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