In chapter 4, the control mode of power system AGC, theconcept of Area Error Control (AEC) and the development of the control strategy of thetie-line, are introduced.

• 第四章首先介绍了电网自动发电控制的控制方式,区域控制误差及其联络线控制策略的发展,引入电网自动发电控制下机组的几种运行状态。