Abstract Due to varying structure, random load demands, nonlinearities, parameters ambiguity, steadily escalating size and intricacy of the interconnected power system (IPS), automatic generation control (AGC) is treated as one of the biggest crucial issues in IPS. Hence, expert, intelligent and robust control scheme is indispensable for stable operation of IPS and supply of electricity under sudden load demand disturbances. In vision of this, in this work, a novel cascade fuzzy-proportional integral derivative incorporating filter (PIDN)-fractional order PIDN (FPIDN-FOPIDN) controller is offered as an expert control strategy to deal effectively with AGC issue of IPS. Imperialist competitive algorithm is prolifically utilized for optimizing the controller parameters. Initially, a two area non-reheat thermal IPS is studied in detail and next to attest the efficacy of the technique, the study is extended to realistic two-area multi-source thermal-hydro-gas and reheat thermal three-area systems. The prominent benefit of cascade FPIDN-FOPIDN strategy comprises its great lethargy to large load demands and its supremacy over various latest intelligent classical/fuzzy controllers. The control strategy beats several techniques concerning significant lesser settling time, oscillations, over/under shoots and different performance index values. Finally, a robustness investigation is performed in order to validate the robustness of the controller.

中文翻译：

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使用新型控制器改善多区域互连热力和热-水-气动力系统中的 AGC 性能

摘要 由于互联电力系统（IPS）的结构变化、随机负载需求、非线性、参数模糊、规模不断扩大和复杂性，自动发电控制（AGC）被视为IPS中最大的关键问题之一。因此，专家、智能和稳健的控制方案对于 IPS 的稳定运行和在突然的负载需求扰动下的电力供应是必不可少的。有鉴于此，在这项工作中，提供了一种新颖的级联模糊比例积分导数结合滤波器 (PIDN)-分数阶 PIDN (FPIDN-FOPIDN) 控制器作为专家控制策略，以有效处理 IPS 的 AGC 问题。帝国主义竞争算法被大量用于优化控制器参数。原来，详细研究了两区非再热热力 IPS，为了证明该技术的有效性，该研究扩展到现实的两区多源热-水-气和再热热力三区系统。级联 FPIDN-FOPIDN 策略的显着优势包括其对大负载需求的极大兴趣以及对各种最新智能经典/模糊控制器的优势。该控制策略在显着更短的稳定时间、振荡、过冲/欠冲和不同的性能指标值方面胜过多项技术。最后，进行稳健性调查以验证控制器的稳健性。级联 FPIDN-FOPIDN 策略的显着优势包括其对大负载需求的极大兴趣以及对各种最新智能经典/模糊控制器的优势。该控制策略在显着更短的稳定时间、振荡、过冲/欠冲和不同的性能指标值方面胜过多项技术。最后，进行稳健性调查以验证控制器的稳健性。级联 FPIDN-FOPIDN 策略的显着优势包括其对大负载需求的极大兴趣以及对各种最新智能经典/模糊控制器的优势。该控制策略在显着更短的稳定时间、振荡、过冲/欠冲和不同的性能指标值方面胜过多项技术。最后，进行稳健性调查以验证控制器的稳健性。