{"title":"Design of a novel cascade PI-(1+FOPID) controller to enhance load frequency control performance in diverse electric power systems","authors":"Jahanzeab Hussain , Runmin Zou , Pawan Kumar Pathak , Awais Karni , Samina Akhtar","doi":"10.1016/j.epsr.2025.111488","DOIUrl":null,"url":null,"abstract":"<div><div>Frequency deviations and tie-line power fluctuations in the power system occur due to mismatches between power generation and varying consumption patterns. Load Frequency Control (LFC) mechanism is widely acknowledged for its role in managing these issues. The adoption of a suitable secondary controller for LFC enhances its overall performance. In this context, this paper presents a unique PI-(1+FOPID) cascade controller designed to successfully handle the challenges associated with LFC. The suggested controller combines the effectiveness of a conventional proportional-integral (PI) controller with a fractional-order PID (FOPID) controller. The Wild Horse Optimizer (WHO) is utilized to fine tune the parameters of the suggested controller based on the integral time absolute error (ITAE) criterion. The suggested WHO-based PI-(1+FOPID) cascade controller approach is tested on four different power systems: a two-area non-reheated thermal power system, a two-area non-reheated thermal power system with governor dead band (GDB) nonlinearity, a two-area multi-source power system, and a three-area hydro-thermal power system with generation rate constraints (GRC). A comparative analysis against other relevant recent approaches is conducted for each test system. The results of this comparative analysis demonstrate the greater performance of the suggested approach in reducing ITAE, settling time, overshoot, and undershoot of frequency deviations and tie-line power fluctuations.</div></div>","PeriodicalId":50547,"journal":{"name":"Electric Power Systems Research","volume":"243 ","pages":"Article 111488"},"PeriodicalIF":3.3000,"publicationDate":"2025-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Electric Power Systems Research","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S037877962500080X","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
引用次数: 0
Abstract
Frequency deviations and tie-line power fluctuations in the power system occur due to mismatches between power generation and varying consumption patterns. Load Frequency Control (LFC) mechanism is widely acknowledged for its role in managing these issues. The adoption of a suitable secondary controller for LFC enhances its overall performance. In this context, this paper presents a unique PI-(1+FOPID) cascade controller designed to successfully handle the challenges associated with LFC. The suggested controller combines the effectiveness of a conventional proportional-integral (PI) controller with a fractional-order PID (FOPID) controller. The Wild Horse Optimizer (WHO) is utilized to fine tune the parameters of the suggested controller based on the integral time absolute error (ITAE) criterion. The suggested WHO-based PI-(1+FOPID) cascade controller approach is tested on four different power systems: a two-area non-reheated thermal power system, a two-area non-reheated thermal power system with governor dead band (GDB) nonlinearity, a two-area multi-source power system, and a three-area hydro-thermal power system with generation rate constraints (GRC). A comparative analysis against other relevant recent approaches is conducted for each test system. The results of this comparative analysis demonstrate the greater performance of the suggested approach in reducing ITAE, settling time, overshoot, and undershoot of frequency deviations and tie-line power fluctuations.
期刊介绍:
Electric Power Systems Research is an international medium for the publication of original papers concerned with the generation, transmission, distribution and utilization of electrical energy. The journal aims at presenting important results of work in this field, whether in the form of applied research, development of new procedures or components, orginal application of existing knowledge or new designapproaches. The scope of Electric Power Systems Research is broad, encompassing all aspects of electric power systems. The following list of topics is not intended to be exhaustive, but rather to indicate topics that fall within the journal purview.
• Generation techniques ranging from advances in conventional electromechanical methods, through nuclear power generation, to renewable energy generation.
• Transmission, spanning the broad area from UHV (ac and dc) to network operation and protection, line routing and design.
• Substation work: equipment design, protection and control systems.
• Distribution techniques, equipment development, and smart grids.
• The utilization area from energy efficiency to distributed load levelling techniques.
• Systems studies including control techniques, planning, optimization methods, stability, security assessment and insulation coordination.