Automatic Generation Control Strategies in Conventional and Modern Power Systems: A Comprehensive Overview

Automatic generation control (AGC) is primarily responsible for ensuring the smooth and efficient operation of an electric power system. The main goal of AGC is to keep the operating frequency under prescribed limits and maintain the interchange power at the intended level. Therefore, an AGC system must be supplemented with modern and intelligent control techniques to provide adequate power supply. This paper provides a comprehensive overview of various AGC models in diverse configurations of the power system. Initially, the history of power system AGC models is explored and the basic operation of AGC in a multi-area interconnected power system is presented. An in-depth analysis of various control methods used to mitigate the AGC issues is provided. Application of fast-acting energy storage devices, high voltage direct current (HVDC) interconnections, and flexible AC transmission systems (FACTS) devices in the AGC systems are investigated. Furthermore, AGC systems employed in different renewable energy generation systems are overviewed and are summarized in tabulated form. AGC techniques in different configurations of microgrid and smart grid are also presented in detail. A thorough overview of various AGC issues in a deregulated power system is provided by considering the different contract scenarios. Moreover, AGC systems with an additional objective of economic dispatch is investigated and an overview of worldwide AGC practices is provided. Finally, the paper concludes with an emphasis on the prospective study in the field of AGC.

[1]  Yasunori Mitani,et al.  Bilateral based robust load frequency control , 2005 .

[2]  Amin Safari,et al.  A load frequency control using a PSO-based ANN for micro-grids in the presence of electric vehicles , 2018, International Journal of Ambient Energy.

[3]  Taher Niknam,et al.  A new intelligent online fuzzy tuning approach for multi-area load frequency control: Self Adaptive Modified Bat Algorithm , 2015 .

[4]  Bairu Vijay Kumar,et al.  Power System loss minimization by using UPFC placed at optimal location given by Artificial Bee Colony Algorithm , 2019, International Journal of Research in Advent Technology.

[5]  Lalit Chandra Saikia,et al.  Comparison of performances of several FACTS devices using Cuckoo search algorithm optimized 2DOF controllers in multi-area AGC , 2015 .

[6]  Nasser Hosseinzadeh,et al.  Load Frequency Control of a Multi-Area Power System: An Adaptive Fuzzy Logic Approach , 2014, IEEE Transactions on Power Systems.

[7]  Yasunori Mitani,et al.  Virtual Inertia Control Application to Enhance Frequency Stability of Interconnected Power Systems with High Renewable Energy Penetration , 2018 .

[8]  Bo Fu,et al.  Research on Automatic Generation Control with Wind Power Participation Based on Predictive Optimal 2-Degree-of-Freedom PID Strategy for Multi-area Interconnected Power System , 2018, Energies.

[9]  Geetanjali Dei,et al.  Self-adaptive fuzzy-PID controller for AGC study in deregulated Power System , 2019, Indonesian Journal of Electrical Engineering and Informatics (IJEEI).

[10]  Zakariya Al-Hamouz,et al.  Variable structure load frequency controllers for multiarea power systems , 1993 .

[11]  Amit Kumar,et al.  Effect of TCPS, SMES, and DFIG on load frequency control of a multi-area multi-source power system using multi-verse optimized fuzzy-PID controller with derivative filter , 2018 .

[12]  B. Anand,et al.  Performance evaluation of objective functions in automatic generation control of thermal power system using ant colony optimization technique-designed proportional–integral–derivative controller , 2018 .

[13]  Devendra K. Chaturvedi,et al.  Load frequency control: a generalised neural network approach , 1999 .

[14]  Ali Ghasemi-Marzbali,et al.  Multi-area multi-source automatic generation control in deregulated power system , 2020 .

[15]  I. A. Chidambaram,et al.  Optimized load-frequency simulation in restructured power system with Redox Flow Batteries and Interline Power Flow Controller , 2013 .

[16]  Yasunori Mitani,et al.  Tustin's technique based digital decentralized load frequency control in a realistic multi power system considering wind farms and communications delays , 2019, Ain Shams Engineering Journal.

[17]  Nasser Sadati,et al.  Two-level optimal load–frequency control for multi-area power systems , 2013 .

[18]  Na Li,et al.  Connecting Automatic Generation Control and Economic Dispatch From an Optimization View , 2014, IEEE Transactions on Control of Network Systems.

[19]  Hansen Yee,et al.  Self-tuning algorithm for automatic generation control in an interconnected power system , 1991 .

[20]  Ibraheem,et al.  Recent philosophies of automatic generation control strategies in power systems , 2005, IEEE Transactions on Power Systems.

[21]  Mehrdad Tarafdar Hagh,et al.  Performance comparison of TCSC with TCPS and SSSC controllers in AGC of realistic interconnected multi-source power system , 2016 .

[22]  M. R. Rashmi,et al.  A literature survey on LFC in a deregulated electricity environment , 2018 .

[23]  Vijay P. Singh,et al.  Impact of Intelligent Demand Response for Load Frequency Control in Smart Grid Perspective , 2020 .

[24]  Atif S. Debs,et al.  Automatic Generation Control , 1988 .

[25]  I. Hiskens,et al.  Simulation and optimization in an AGC system after deregulation , 2001, PICA 2001. Innovative Computing for Power - Electric Energy Meets the Market. 22nd IEEE Power Engineering Society. International Conference on Power Industry Computer Applications (Cat. No.01CH37195).

[26]  Banaja Mohanty,et al.  TLBO optimized sliding mode controller for multi-area multi-source nonlinear interconnected AGC system , 2015 .

[27]  Naimul Hasan,et al.  Hybrid Taguchi Genetic Algorithm-Based AGC Controller for Multisource Interconnected Power System , 2019, Electric Power Components and Systems.

[28]  Zechun Hu,et al.  Coordinated Active Power Control Strategy for Deloaded Wind Turbines to Improve Regulation Performance in AGC , 2019, IEEE Transactions on Power Systems.

[29]  Om P. Malik,et al.  Robust decentralized neural networks based LFC in a deregulated power system , 2007 .

[30]  Mazin T. Muhssin,et al.  Frequency control of future power systems: reviewing and evaluating challenges and new control methods , 2018, Journal of Modern Power Systems and Clean Energy.

[31]  H. Asano,et al.  Influence of photovoltaic power generation on required capacity for load frequency control , 1996 .

[32]  S. Z. Sayed Hassen,et al.  Intelligent Controllers for Load Frequency Control of Two-Area Power System , 2017 .

[33]  Tao Yu,et al.  Deep Forest Reinforcement Learning for Preventive Strategy Considering Automatic Generation Control in Large-Scale Interconnected Power Systems , 2018 .

[34]  Yasunori Mitani,et al.  Load-frequency regulation under a bilateral LFC scheme using flexible neural networks , 2006 .

[35]  Hassan Bevrani,et al.  Robust Power System Frequency Control , 2009 .

[36]  Ibraheem Nasiruddin,et al.  Modeling of HVDC Tie Links and Their Utilization in AGC/LFC Operations of Multiarea Power Systems , 2019, IEEE Transactions on Industrial Electronics.

[37]  Binod Kumar Sahu,et al.  A novel hybrid LUS–TLBO optimized fuzzy-PID controller for load frequency control of multi-source power system , 2016 .

[38]  C. W. Ross,et al.  Dynamic Performance Evaluation of a Computer Controlled Electric Power System , 1972 .

[39]  H. Shayeghi,et al.  Load frequency control strategies: A state-of-the-art survey for the researcher , 2009 .

[40]  Hassan Haes Alhelou,et al.  A Decentralized Functional Observer Based Optimal LFC Considering Unknown Inputs, Uncertainties, and Cyber-Attacks , 2019, IEEE Transactions on Power Systems.

[41]  W. C. Chan,et al.  3-level load-frequency control of power systems interconnected by asynchronous tie lines , 1979 .

[42]  M. V. Hariharan,et al.  Design of variable-structure load-frequency controller using pole assignment technique , 1984 .

[43]  Qian Liu,et al.  H∞ Robust Load Frequency Control for Multi-Area Interconnected Power System with Hybrid Energy Storage System , 2018, Applied Sciences.

[44]  Chandan Kumar Shiva,et al.  Automatic generation control of multi-unit multi-area deregulated power system using a novel quasi-oppositional harmony search algorithm , 2015 .

[45]  Hassan Haes Alhelou,et al.  Comparative study on the performance of many-objective and single-objective optimisation algorithms in tuning load frequency controllers of multi-area power systems , 2016 .

[46]  Swagat Pati,et al.  Hybrid differential evolution particle swarm optimisation optimised fuzzy proportional–integral derivative controller for automatic generation control of interconnected power system , 2014 .

[47]  A. Peer Fathima,et al.  Critical research areas on load frequency control issues in a deregulated power system: A state-of-the-art-of-review , 2017 .

[48]  Kalyan Chatterjee,et al.  A comprehensive state of the art literature survey on LFC mechanism for power system , 2017 .

[49]  Deepak Kumar Lal,et al.  Grey Wolf Optimizer Algorithm Based Fuzzy PID Controller for AGC of Multi-area Power System with TCPS☆ , 2016 .

[50]  Jing Zhang,et al.  Exploitation of Battery Energy Storage in Load Frequency Control -A Literature Survey , 2016 .

[51]  Nathan Cohn,et al.  Techniques for Improving the Control of Bulk Power Transfers on Interconnected Systems , 1971 .

[52]  H. D. Mathur,et al.  Forecasting of solar and wind power using LSTM RNN for load frequency control in isolated microgrid , 2020, International Journal of Modelling and Simulation.

[53]  Hassan Bevrani,et al.  Fuzzy Logic-Based Load-Frequency Control Concerning High Penetration of Wind Turbines , 2012, IEEE Systems Journal.

[54]  Takeyoshi Kato,et al.  Evaluation of LFC capacity for output fluctuation of photovoltaic power generation systems based on multi-point observation of insolation , 2001, 2001 Power Engineering Society Summer Meeting. Conference Proceedings (Cat. No.01CH37262).

[55]  Yogesh V. Hote,et al.  PI Controller Based Load Frequency Control Approach for Single-Area Power System Having Communication Delay , 2018 .

[56]  Di Shi,et al.  Electric vehicles participation in load frequency control based on mixed H2/H∞ , 2021 .

[57]  Saleh Mobayen,et al.  An intelligent ABC-based terminal sliding mode controller for load-frequency control of islanded micro-grids , 2021 .

[58]  Nedjeljko Perić,et al.  Sliding mode based load-frequency control in power systems , 2010 .

[59]  S. C. Tripathy,et al.  Decentralized suboptimal load-frequency control of a hydro-thermal power system using the state variable model , 1985 .

[60]  Engin Yesil,et al.  Interval type-2 fuzzy PID load frequency controller using Big Bang-Big Crunch optimization , 2014, Appl. Soft Comput..

[61]  Pedro Rodriguez,et al.  Modeling and sensitivity analyses of VSP based virtual inertia controller in HVDC links of interconnected power systems , 2016 .

[62]  Dushyant Sharma,et al.  Application of modified sine cosine algorithm to optimally design PID/fuzzy‐PID controllers to deal with AGC issues in deregulated power system , 2019, IET Generation, Transmission & Distribution.

[63]  M.D. Ilic,et al.  Advanced generation control with economic dispatch , 1995, Proceedings of 1995 34th IEEE Conference on Decision and Control.

[64]  Ajit Kumar Barisal,et al.  Improved PSO based automatic generation control of multi-source nonlinear power systems interconnected by AC/DC links , 2018 .

[65]  Lalit Chandra Saikia,et al.  Performance comparison of several classical controllers in AGC for multi-area interconnected thermal system , 2011 .

[66]  Lalit Chandra Saikia,et al.  Combined application of redox flow battery and DC link in restructured AGC system in the presence of WTS and DSTS in distributed generation unit , 2018 .

[67]  Abdul Basit,et al.  Flexible Modern Power System: Real-Time Power Balancing through Load and Wind Power , 2019, Energies.

[68]  Chandan Kumar Shiva,et al.  A novel quasi-oppositional harmony search algorithm for automatic generation control of power system , 2015, Appl. Soft Comput..

[69]  H. Shayeghi,et al.  Robust modified GA based multi-stage fuzzy LFC , 2007 .

[70]  Sakti Prasad Ghoshal,et al.  Coordinated control of TCPS and SMES for frequency regulation of interconnected restructured power systems with dynamic participation from DFIG based wind farm , 2012 .

[71]  Yasunori Mitani,et al.  Virtual Inertia Control-Based Model Predictive Control for Microgrid Frequency Stabilization Considering High Renewable Energy Integration , 2017 .

[72]  Tao Lu,et al.  Secondary Frequency Control of Isolated Microgrid Based on LADRC , 2019, IEEE Access.

[73]  Ziping WU,et al.  State-of-the-art review on frequency response of wind power plants in power systems , 2018 .

[74]  Rahmat Khezri,et al.  Fuzzy Logic Based Fine-tuning Approach for Robust Load Frequency Control in a Multi-area Power System , 2016 .

[75]  Nick Jenkins,et al.  Investigation of Domestic Load Control to Provide Primary Frequency Response Using Smart Meters , 2012, IEEE Transactions on Smart Grid.

[76]  H. Zareipour,et al.  Frequency regulation services: A comparative study of select North American and European reserve markets , 2012, 2012 North American Power Symposium (NAPS).

[77]  Chongxin Huang,et al.  Load Frequency Control of Interconnected Power System via Multi-Agent System Method , 2017 .

[78]  A. Bensenouci,et al.  Mixed H∞/H2 with pole-placement design of robust LMI-based output feedback controllers for multi-area load frequency control , 2007, EUROCON 2007 - The International Conference on "Computer as a Tool".

[79]  H. Shayeghi,et al.  Application of ANN technique based on μ-synthesis to load frequency control of interconnected power system , 2006 .

[80]  Lalit Chandra Saikia,et al.  Automatic generation control of a multi-area ST – Thermal power system using Grey Wolf Optimizer algorithm based classical controllers , 2015 .

[81]  Narendra Kumar,et al.  Optimal control strategy–based AGC of electrical power systems: A comparative performance analysis , 2017 .

[82]  Nand Kishor,et al.  A literature survey on load–frequency control for conventional and distribution generation power systems , 2013 .

[83]  Rujing Zhou,et al.  Robust decentralised load-frequency control of multi-area power systems , 1996 .

[84]  S. Dechanupaprittha,et al.  Robust decentralised frequency stabilisers design of static synchronous series compensators by taking system uncertainties into consideration , 2006 .

[85]  Nidul Sinha,et al.  LFC for Autonomous Hybrid Micro Grid System of 3 Unequal Renewable Areas using Mine Blast Algorithm , 2018 .

[86]  Ahmed Rubaai,et al.  Self-tuning load frequency control: multilevel adaptive approach , 1994 .

[87]  M. Tripathy,et al.  Performance of CSA optimized controllers of DFIGs and AGC to improve frequency regulation of a wind integrated hydrothermal power system , 2019, Alexandria Engineering Journal.

[88]  Mohammad Bagher Menhaj,et al.  Decentralized robust adaptive-output feedback controller for power system load frequency control , 2002 .

[89]  Taher Niknam,et al.  Frequency deviation control by coordination control of FC and double-layer capacitor in an autonomous hybrid renewable energy power generation system , 2011 .

[90]  Tao Yu,et al.  Artificial emotional reinforcement learning for automatic generation control of large-scale interconnected power grids , 2017 .

[91]  M. A. Pai,et al.  Simulation and Optimization in an AGC System after Deregulation , 2001, IEEE Power Engineering Review.

[92]  Chunyu Chen,et al.  Cyber Attack Detection Scheme for a Load Frequency Control System Based on Dual-Source Data of Compromised Variables , 2021, Applied Sciences.

[93]  Engin Yesil,et al.  Self tuning fuzzy PID type load and frequency controller , 2004 .

[94]  Min-Rong Chen,et al.  An Adaptive Model Predictive Load Frequency Control Method for Multi-Area Interconnected Power Systems with Photovoltaic Generations , 2017 .

[95]  Nilanjan Dey,et al.  Design of a proportional-integral-derivative controller for an automatic generation control of multi-area power thermal systems using firefly algorithm , 2019, IEEE/CAA Journal of Automatica Sinica.

[96]  Attia A. El-Fergany,et al.  Efficient frequency controllers for autonomous two-area hybrid microgrid system using social-spider optimiser , 2017 .

[97]  H. Shayeghi,et al.  LFC Design of a Deregulated Power System with TCPS Using PSO , 2009 .

[98]  S. S. Pati,et al.  Modelling of Differential Evolution Based Automatic Generation Control for Two Area Interconnected Power Systems , 2019 .

[99]  Bin Wu,et al.  Coordination strategies of distributed energy resources including FESS, DEG, FC and WTG in load frequency control (LFC) scheme of hybrid isolated micro-grid , 2019, International Journal of Electrical Power & Energy Systems.

[100]  Narendra Kumar,et al.  AGC of a multi-area multi-source hydrothermal power system interconnected via AC/DC parallel links under deregulated environment , 2016 .

[101]  Ali Mohammad Ranjbar,et al.  Robust analysis and design of power system load frequency control using the Kharitonov's theorem , 2014 .

[102]  Xinghuo Yu,et al.  Enhancing Optimal Automatic Generation Control in a Multi-Area Power System With Diverse Energy Resources , 2019, IEEE Transactions on Power Systems.

[103]  A Jeya Veronica,et al.  Control strategies for frequency regulation in microgrids: A review: , 2019 .

[104]  Zakariya Al-Hamouz,et al.  Optimal design of a sliding mode AGC controller: Application to a nonlinear interconnected model , 2011 .

[105]  Padmanaban Sanjeevikumar,et al.  Large Scale Renewable Energy Integration: Issues and Solutions , 2019 .

[106]  R. Bacher,et al.  Real-time optimal power flow in automatic generation control , 1988 .

[107]  Amar Kumar Barik,et al.  Proficient load‐frequency regulation of demand response supported bio‐renewable cogeneration based hybrid microgrids with quasi‐oppositional selfish‐herd optimisation , 2019, IET Generation, Transmission & Distribution.

[108]  B. K. Sahu,et al.  Teaching-learning based optimization algorithm based fuzzy-PID controller for automatic generation control of multi-area power system , 2015, Appl. Soft Comput..

[109]  Nand Kishor,et al.  Load Frequency Control with Communication Topology Changes in Smart Grid , 2016, IEEE Transactions on Industrial Informatics.

[110]  Federico Milano,et al.  Efficient implementation of MPC-based AGC for real-world systems with low inertia , 2018 .

[111]  Pierluigi Siano,et al.  Challenges and Opportunities of Load Frequency Control in Conventional, Modern and Future Smart Power Systems: A Comprehensive Review , 2018, Energies.

[112]  T. S. Bhatti,et al.  Sampled Data Automatic Generation Control Analysis with Reheat Steam Turbines and Governor Dead-Band Effects , 1984, IEEE Power Engineering Review.

[113]  F. Fernandez-Bernal,et al.  The Spanish AGC System: Description and Analysis , 2009, IEEE Transactions on Power Systems.

[114]  Ieee Report,et al.  Dynamic Models for Steam and Hydro Turbines in Power System Studies , 1973 .

[115]  Chen Shen,et al.  Multilevel Power-Imbalance Allocation Control for Secondary Frequency Control of Power Systems , 2017, IEEE Transactions on Automatic Control.

[116]  Xinghuo Yu,et al.  Optimal Automatic Generation Control of an Interconnected Power System Under Network Constraints , 2018, IEEE Transactions on Industrial Electronics.

[117]  Lalit Chandra Saikia,et al.  Maiden application of bacterial foraging based fuzzy IDD controller in AGC of a multi-area hydrothermal system , 2013 .

[118]  Ramesh Chandra Prusty,et al.  Improved-salp swarm optimized type-II fuzzy controller in load frequency control of multi area islanded AC microgrid , 2018, Sustainable Energy, Grids and Networks.

[119]  W. Mansour,et al.  Bat inspired algorithm based optimal design of model predictive load frequency control , 2016 .

[120]  Hassan Haes Alhelou,et al.  Wind Driven Optimization Algorithm Application to Load Frequency Control in Interconnected Power Systems Considering GRC and GDB Nonlinearities , 2018 .

[121]  Prabhat Kumar,et al.  Sub-optimal automatic generation control of interconnected power system using constrained feedback control strategy , 2012 .

[122]  Yajvender Pal Verma,et al.  Evaluation of CES and DFIG unit in AGC of realistic multisource deregulated power system , 2017 .

[123]  Federico Milano,et al.  Model Predictive Control-Based AGC for Multi-Terminal HVDC-Connected AC grids , 2018, IEEE Transactions on Power Systems.