Variable Universe Fuzzy Logic-Based Hybrid LFC Control With Real-Time Implementation

Aziz, Saddam; Wang, Huaizhi; Liu, Yitao; Peng, Jianchun; Jiang, Hui

doi:10.1109/access.2019.2900047

Cited by 45 publications

(28 citation statements)

References 39 publications

(52 reference statements)

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“…The detailed information of FLA is available in the literature. 36,37 The FLA mainly consists of three blocks, viz, fuzzification, inference engine, and defuzzification. Here, Mamdani type FLA is employed.…”

Section: Multistage Pid Controllermentioning

confidence: 99%

A novel fuzzy tuned multistage PID approach for frequency dynamics control in an islanded microgrid

Annamraju

Nandiraju

2020

Int Trans Electr Energ Syst

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Objective: In microgrid (MG), besides the load perturbation, volatile nature in renewable output power along with energy storage system and inertia uncertainties cause large frequency deviations which may weaken the MG and could lead to complete blackout. Therefore, MG requires an intelligent, efficient and robust control method. Methods: In response to this challenge, this paper proposes a novel fuzzy logic approach (FLA) tuned multistage PID controller for frequency control of an islanded MG in the presence of high renewable penetration. The proposed controller is intended for principal parameter tuning of multistage PID controller under critical operating conditions as mentioned in the objective. Results: The real-time MG test system is considered to present the simulation results. The test system is modelled in Matlab/Simulink. The results are carried out under different operating scenarios and the performances of the proposed technique are compared with various existing techniques in the literature. Conclusions: The simulation outcomes divulge that the proposed controller is more superior in improving the frequency dynamics of the MG (in terms of settling time, overshoot and error reduction) under various disturbance conditions. Furthermore, the proposed controller is more robust to renewable and energy storage system uncertainties in MG and less sensitive to MG parametric variations as compared to other controllers in literature.

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Section: Multistage Pid Controllermentioning

confidence: 99%

A novel fuzzy tuned multistage PID approach for frequency dynamics control in an islanded microgrid

Annamraju

Nandiraju

2020

Int Trans Electr Energ Syst

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“…The proposed topology-based approach for placement, control, and securing FACTS devices is implemented for the small 49-bus, moderate 274-bus, and a large 1,176-bus systems of references [68], [69], and [70], respectively. For the 274-bus and 1,176 bus systems, the emphasis is on the effectiveness of the proposed approach for obscuring the critical data for moderate/large networks.…”

Section: Implementation Of the Proposed Cyber Constrained Placemementioning

confidence: 99%

“…The Newton Raphson algorithm has reached the solution after 28 iterations. The bus voltage magnitudes of all busses before and after using the FACTS controllers are illustrated in [68] for power flow analysis: Bus number, bus voltage magnitude |V | in volts, angle of bus θ, net active power of the bus P n in MW, and the net reactive power of the bus Q n in MVar. MVar) 1 380 0 -35 -12 26 347 -12 -33 -17 2 366 -10 45 12 27 338 -11 127 45 3 372 -5 -39 45 28 358 -9 212 67 4 Equivalently, there is 101 MW power flow increase with using FACTS controllers.…”

Section: A Simulations and Analyses Of 49-bus Systemmentioning

confidence: 99%

“…We perform simulations for the 274-bus system to better clarify the advantages of the proposed approaches for larger networks. Since the networks' parameters such as the impedances of the lines are not available for these two networks, we have not investigated the impacts of the pro- [68] for power flow analysis: line number as "l : i − j" where l is the line number and i and j are the the nodes at two ends of the line number l, line resistance R in ohms (Ω), reactance X in ohms (Ω), and capacitive susceptance B in siemens (s). posed FACTS placement.…”

Section: B Simulations and Analyses Of 274-bus Systemmentioning

confidence: 99%

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Cyber-Security Constrained Placement of FACTS Devices in Power Networks From a Novel Topological Perspective

et al. 2020

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Optimal placement of flexible AC transmission systems (FACTS) devices and the cybersecurity of associated data exchange are crucial for the controllability of wide area power networks. The placement of FACTS devices is studied in this paper from a novel graph theoretic perspective, which unlike the existing approaches, purely relies on topological characteristics of the underlying physical graphs of power networks. To this end, the maximum matching principle (MMP) is used to find the set of required FACTS devices for the grid controllability. In addition, the cyber-security of the most critical data related to the FACTS controllers is guaranteed by introducing the concept of moderated-k-security where k is a measure of data obscurity from the adversary perspective. The idea of moderated-k-symmetry is proposed to facilitate the arrangement of the published cyber graph based on a permutation of nodes within the symmetry group of the grid, called generator of automorphism. It is then verified that the published cybergraph can significantly obscure the data exchange over the cyber graph for adversaries. Finally, a similarity is observed and demonstrated between the set of critical nodes attained from the symmetry analysis and the solution of the FACTS devices placement that further highlights the importance of symmetry for the analysis and design of complex power networks. Detailed simulations are applied to three power networks and analyzed to demonstrate the performance and eligibility of the proposed methods and results.

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“…Numerous factors such as membership function, fuzzy rules, transfer function model, number of input and output layers and method of training the network can affect the output of the designed controller. Additionally, implementation of such controller in real-time for ALFC application is a cumbersome process and requires field expertise [8], [10], [11]. Therefore, the gain parameters of classical controllers are obtained using population-based evolutionary computational intelligence approaches such as GA [10], PSO [12], QOHSA [13], GOA [14], HHO [15], HBFO [16], HIF-PS [17], BA [18],QSHO [19]and other numerous approaches for controlling the ACE of interconnected multiarea multi-source power system.…”

Section: Introductionmentioning

confidence: 99%

A Matignon’s Theorem Based Stability Analysis of Hybrid Power System for Automatic Load Frequency Control Using Atom Search Optimized FOPID Controller

et al. 2020

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The large-scale penetration of intermittent renewable energy (RE) sources such as wind and solar power generation may cause a problem of frequency aberration, power quality and instability to the system. This occurs when the load frequency control of interconnected system is unable to compensate the power balance between generation and load demand. To overcome these issues, this paper proposes a method to analyze the frequency stability of Hybrid Power System (HPS) through adaptive intelligent control techniques for delivering reliable power supply under the stochastic nature of RE and load demand. A recently developed physics-inspired Atom Search Optimization algorithm was applied for tuning the parameters of Fractional Order Proportional-Integral-Derivative controller for Automatic Load Frequency control of HPS. In addition, an effort was made to analyze the frequency stability of HPS using Matignon's theorem. The interconnected HPS consists of reheat thermal power system, RE sources such as wind and solar thermal power generation associated with energy storage devices namely aqua electrolyzer, fuel cell and electric vehicle. The gain and fractional terms of the controller were obtained by minimizing the Integral Time Absolute Error of interconnected system. The robustness of ASO-tuned FOPID controller is tested on two-area HPS that was modelled using MATLAB/Simulink. The results obtained were then compared with other fractional order and classical integer order controllers. From the simulation results, it is inferred that the proposed ASO-tuned FOPID controller gives superior transient and steady-state response compared with other controllers. Moreover, the self-adaptiveness and robustness of the controller was validated to account for the change in RE power generations and system parameters. Furthermore, the effectiveness of the method is proved by comparing its performance with the recent literature works. The real-time applicability of proffered controller is validated in hardware-in-the-loop simulation using Real Time Digital Simulator.

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Variable Universe Fuzzy Logic-Based Hybrid LFC Control With Real-Time Implementation

Cited by 45 publications

References 39 publications

A novel fuzzy tuned multistage PID approach for frequency dynamics control in an islanded microgrid

A novel fuzzy tuned multistage PID approach for frequency dynamics control in an islanded microgrid

Cyber-Security Constrained Placement of FACTS Devices in Power Networks From a Novel Topological Perspective

A Matignon’s Theorem Based Stability Analysis of Hybrid Power System for Automatic Load Frequency Control Using Atom Search Optimized FOPID Controller

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