Frequency Regulation in Deregulated Power System Integrated with DFIG and SMES Optimized by TLBO
P. Venkatesh1, K. Sri Kumar2, K. Sandhya Rani3
1P. Venkatesh, Department of Electrical and Electronics Engineering, V R Siddhartha Engineering College, Vijayawada (Andhra Pradesh), India.
2K. Sri Kumar, Department of Electrical and Electronics Engineering, JNTUK, Kakinada (Andhra Pradesh), India.
3K. Sandhya Rani, Department of Electrical and Electronics Engineering, V R Siddhartha Engineering College, Vijayawada (Andhra Pradesh), India.
Manuscript received on 12 May 2019 | Revised Manuscript received on 06 June 2019 | Manuscript Published on 15 June 2019 | PP: 191-199 | Volume-8 Issue-1S3 June 2019 | Retrieval Number: A10350681S319/2019©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: The aim of LFC is to make steady state error to zero and to control the tie line power deviation for each control area. LFC system utilizes basic controllers they are I controller, PI controller, PID controller, cascaded PD-PI controller etc.PID and cascaded PD-PI controllers are proposed for the load frequency regulation problem in two area multi-source power generation system and they are tuned by Teaching and Learning Based Optimization (TLBO) Algorithm.Two area multi-unit systems are considered and every area contains two generating systems; first generating system is a reheat steam turbine and second generating system is a gas turbine. To advance the LFC concert, combinations of Super conducting Magnetic Energy Source (SMES) with and without Doubly Fed Induction Generator (DFIG) wind turbine are included in two areas and their parameters are optimized by TLBO. Frequency regulation and tie line power deviation are controlled by objective function that is Integral of Time multiplied Absolute Error (ITAE) technique. For a small load perturbation the efficiency of the proposed system is examined with three different cases, they are unilateral, bilateral and contract violation cases. The resulting power system is simulated and analyzed using MATLAB Simulink software.
Keywords: Cascaded PD-PI Controller, DFIG Wind Turbine, Frequency Error, Frequency Regulation, ITAE, Proportional Integral and Derivative (PID) Controller, SMES, TLBO Algorithm, Tie Line Power Deviation.
Scope of the Article: Frequency Selective Surface