Frequency disturbances caused by load perturbations of multi area interconnected power system are reduced by using proper control schemes provided via secondary control loop along with primary control of generation plants. These secondary controllers provide simultaneous control signal to individual machines of a particular area when the control scheme is area centralized. This area centralized mechanism provides quick control action with less computational burden since control problem dimensions gets reduced even the area consists multiple plants/machines. Such centralized new cascade control scheme is proposed in this paper to supervise the secondary control mechanism and it is implemented with parallel connection of 2-Degree of Freedom Proportional-Integral-Derivative (2-DOF PID) controller combined with regular PID controller. The performance of this new controller is studied on multi area multi machine interconnected power system with participation factor concept and later its relative performance in terms of dynamic and steady state specifications are compared with conventional PID and 2-DOF PID controllers. These control parameters are tuned by Invasive Weed Optimization (IWO) algorithm to achieve better system outputs. Case studies presented in this paper show the advantages of proposed control scheme.

中文翻译：

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用于自动发电控制的侵入性杂草优化区域集中式2自由度组合PID控制器方案

多区域互连电力系统的负载扰动引起的频率扰动通过使用通过次级控制回路提供的适当控制方案以及发电厂的初级控制来减少。当控制方案为区域集中时，这些辅助控制器向特定区域的单个机器提供同步控制信号。由于即使该区域包含多个工厂/机器，控制问题的维度也会减少，因此该区域集中机制提供了具有较少计算负担的快速控制操作。本文提出了这种新的集中级联控制方案来监督二级控制机制，它是通过并联 2 自由度比例-积分-微分 (2-DOF PID) 控制器与常规 PID 控制器相结合来实现的。在具有参与因子概念的多区域多机互连电力系统上研究了这种新控制器的性能，然后将其在动态和稳态规范方面的相对性能与传统 PID 和 2-DOF PID 控制器进行了比较。这些控制参数通过入侵杂草优化 (IWO) 算法进行调整，以实现更好的系统输出。本文中的案例研究显示了所提出的控制方案的优点。这些控制参数通过入侵杂草优化 (IWO) 算法进行调整，以实现更好的系统输出。本文中的案例研究显示了所提出的控制方案的优点。这些控制参数通过入侵杂草优化 (IWO) 算法进行调整，以实现更好的系统输出。本文中的案例研究显示了所提出的控制方案的优点。