NDLI: Modified group search optimisation-based comparative performance evaluation of thyristor controlled series capacitor-based fractional order damping controllers to improve load frequency control performance in restructured environment

Content Provider	IET Digital Library
Author	Morsali, Javad Zare, Kazem Hagh, Mehrdad Tarafdar
Abstract	This study compares fractional order phase lead-lag controller, fractional order proportional-integral-derivative (FOPID), and tilt-integral-derivative controllers as thyristor controlled series capacitor (TCSC)-based damping controller to improve load frequency control (LFC) performance in a restructured power system. To prepare an efficient ancillary service, a precise formulation for participation of TCSC in tie-line power flow exchange is presented which is compared with the earlier Taylor-based approximated model. The controller parameters are adjusted by employing different evolutionary algorithms. To obtain realistic results under a competitive environment, a diverse-GENCOs multi-DISCOs power system with the generation rate constraint and governor dead-band effects, communication time delay, bilateral contracts, and pool-co transactions is taken into account. Non-linear time-domain simulations demonstrate that the FOPID-based TCSC damping controller in coordination with an integral-type simple LFC can most effectively suppress the area frequency and tie-line power oscillations. Further investigations are performed for uncontracted higher order step and random load demands treated as contract violation scenarios to confirm the superiority of the proposed fractional order controllers-based TCSC–LFC over the Taylor-based TCSC–LFC. The sensitivity analysis is done for a wide range of loading condition and system parameters to compare the robustness of the considered controllers.
Starting Page	4654
Ending Page	4669
Page Count	16
ISSN	17518687
Volume Number	11
e-ISSN	17518695
Issue Number	Issue 18, Dec (2017)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-gtd/11/18
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-gtd.2016.2094
Journal	IET Generation, Transmission & Distribution
Publisher Date	2017-07-26
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Ancillary Service Bilateral Contracts Communication Time Delay Contract Violation Scenarios Control of Electric Power System Delay Distributed Parameter Control System Evolutionary Algorithm Evolutionary Computation FOPID Fractional Order Phase Lead-lag Controller Frequency Control Generation Rate Constraint Governor Dead-band Effect LFC Load Frequency Control Performance Load Regulation Mathematical Analysis Modified Group Search Optimisation-based Comparative Performance Evaluation Nonlinear Time-domain Simulations Optimisation Technique Pool-co Transactions Power Converter Power Supplies to Apparatus Power System Control Random Load Demands Restructured Environment Restructured Power System Sensitivity Analysis Taylor-based Approximated Model TCSC Thyristor Application Thyristor Controlled Series Capacitor-based Fractional Order Damping Controller Tie-line Power Flow Exchange Tilt-integral-derivative Controller Time Domain Analysis
Content Type	Text
Resource Type	Article
Subject	Control and Systems Engineering Energy Engineering and Power Technology Electrical and Electronic Engineering

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