IJE TRANSACTIONS A: Basics Vol. 32, No. 1 (January 2019) 75-83    Article in Press

downloaded Downloaded: 0   viewed Viewed: 160

A. S. TUMMALA and R. P V
( Received: June 15, 2018 – Accepted: October 26, 2018 )

Abstract    The adverse effects of penetration of renewable energy systems on the power systems have already been experienced as they create wide frequency fluctuations due to their stochastic nature, adding to the load and parameter variations. This necessitated the regulation of frequency using robust controllers. In this paper, a composite sliding mode control is proposed to regulate the load frequency. This proposed scheme is a combination of a Finite time disturbance observer (FTDO) and a sliding mode controller. A novel sliding surface which is a function of system states and estimated disturbances is designed. The higher order disturbances like load disturbances, wind energy fluctuations and parameter variations are estimated and compensated through the control law. This concept is tested on Single-area and Three-area power systems for different operating conditions. The simulation results show the robustness and efficacy of the proposed method.


Keywords    Load Frequency Control, Sliding mode control, Power system control, AGC


References    Global Wind Energy Council, “Global Wind Report 2015,” 2015. 2       Navigant and Research, “Executive Summary : World Wind Energy Market Update 2016 Global Wind Power Development , Wind Turbine OEM Market Shares , and Capacity Market Forecasts,” 2016. 3       H. Bevrani, A. Ghosh, and G. Ledwich, “Renewable energy sources and frequency regulation: survey and new perspectives,” IET Renew. Power Gener., vol. 4, no. 5, pp. 438–457, 2010. 4       S. K. Pandey, S. R. Mohanty, and N. Kishor, “A literature survey on load–frequency control for conventional and distribution generation power systems,” Renew. Sustain. Energy Rev., vol. 25, pp. 318–334, Sep. 2013. 5       Qing-Guo Wang, Tong-Heng Lee, Ho-Wang Fung, Qiang Bi, and Yu Zhang, “PID tuning for improved performance,” IEEE Trans. Control Syst. Technol., vol. 7, no. 4, pp. 457–465, Jul. 1999. 6       R. Kumar Sahu, S. Panda, A. Biswal, and G. T. Chandra Sekhar, “Design and analysis of tilt integral derivative controller with filter for load frequency control of multi-area interconnected power systems,” ISA Trans., vol. 61, pp. 251–264, Mar. 2016. 7       B. Mohanty, S. Panda, and P. K. Hota, “Controller parameters tuning of differential evolution algorithm and its application to load frequency control of multi-source power system,” Int. J. Electr. Power Energy Syst., vol. 54, pp. 77–85, Jan. 2014. 8       N. Kumar, B. Tyagi, and V. Kumar, “Multiarea Deregulated Automatic Generation Control Scheme of Power System Using Imperialist Competitive Algorithm Based Robust Controller,” IETE J. Res., pp. 1–10, Sep. 2017. 9       H. Bevrani and P. R. Daneshmand, “Fuzzy logic-based load-frequency control concerning high penetration of wind turbines,” IEEE Syst. J., vol. 6, no. 1, pp. 173–180, 2012. 10     H. LEE, J. PARK, and Y. JOO, “Robust load-frequency control for uncertain nonlinear power systems: A fuzzy logic approach,” Inf. Sci. (Ny)., vol. 176, no. 23, pp. 3520–3537, 2006. 11     S. Prakash and S. K. Sinha, “Load Frequency Control of Multi-area Power Systems Using Neuro-Fuzzy Hybrid Intelligent Controllers,” IETE J. Res., vol. 61, no. 5, pp. 526–532, Sep. 2015. 12     F. Daneshfar and H. Bevrani, “Multiobjective design of load frequency control using genetic algorithms,” Int. J. Electr. Power Energy Syst., vol. 42, no. 1, pp. 257–263, 2012. 13     Liu, Rui-Juan, et al. \"Robust disturbance rejection based on equivalent-input-disturbance approach.\" IET Control Theory & Applications 7.9 (2013): 1261-1268. 14     Liu, Rui-Juan, et al. \"Active disturbance rejection control based on an improved equivalent-input-disturbance approach.\" IEEE/ASME Transactions on Mechatronics 18.4 (2013): 1410-1413. 15     H. Bevrani, T. Hiyama, and H. Bevrani, “Robust PID based power system stabiliser: Design and real-time implementation,” Int. J. Electr. Power Energy Syst., vol. 33, no. 2, pp. 179–188, Feb. 2011. 16     A. Khodabakhshian and M. Edrisi, “A new robust PID load frequency controller,” Control Eng. Pract., vol. 16, no. 9, pp. 1069–1080, Sep. 2008. 17     H. Shayeghi, H. A. Shayanfar, and A. Jalili, “Load frequency control strategies: A state-of-the-art survey for the researcher,” Energy Convers. Manag., vol. 50, no. 2, pp. 344–353, 2009. 18     Xia, Yuanqing, et al. \"Robust adaptive sliding mode control for uncertain time‐delay systems.\" International journal of adaptive control and signal processing 23.9 (2009): 863-881. 19     V. P. Singh, N. Kishor, P. Samuel, and S. R. Mohanty, “Impact of Communication Delay on Frequency Regulation in Hybrid Power System Using Optimized H-Infinity Controller,” IETE J. Res., vol. 62, no. 3, pp. 356–367, May 2016. 20     A. Y. SIVARAMAKRlSHNAN, M. V. HARIHARAN, and M. C. SRISAILAM, “Design of variable-structure load-frequency controller using pole assignment technique,” Int. J. Control, vol. 40, no. 3, pp. 487–498, Sep. 1984. 21     Y. Mi, Y. Fu, C. Wang, and P. Wang, “Decentralized Sliding Mode Load Frequency Control for Multi-Area Power Systems,” IEEE Trans. Power Syst., vol. 28, no. 4, pp. 4301–4309, Nov. 2013. 22     J. Yang, S. Li, and X. Yu, “Sliding-mode control for systems with mismatched uncertainties via a disturbance observer,” IEEE Trans. Ind. Electron., vol. 60, no. 1, pp. 160–169, 2013. 23     Yang, Jun, Wen-Hua Chen, and Zhengtao Ding. \"Disturbance observers and applications.\" (2016): 621-624. 24     J. Yang, J. Su, S. Li, and X. Yu, “High-order mismatched disturbance compensation for motion control systems via a continuous dynamic sliding-mode approach,” IEEE Trans. Ind. Informatics, vol. 10, no. 1, pp. 604–614, 2014. 25     A. Levant, “Higher-order sliding modes, differentiation and output-feedback control,” Int. J. Control, vol. 76, no. 9–10, pp. 924–941, Jan. 2003. 26     S. H. Li, H. B. Sun, J. Yang, and X. H. Yu, “Continuous Finite-Time Output Regulation for Disturbed Systems Under Mismatching Condition,” IEEE Trans. Automat. Contr., vol. 60, no. 1, pp. 277–282, 2015. 27     A. F. de Loza, F. J. Bejarano, and L. Fridman, “Unmatched uncertainties compensation based on high-order sliding mode observation,” Int. J. Robust Nonlinear Control, vol. 23, no. 7, pp. 754–764, May 2013. 28     A. S. L. V. TUMMALA, R. INAPAKURTHI, and P. V. RAMANARAO, “Observer based sliding mode frequency control for multi-machine power systems with high renewable energy,” J. Mod. Power Syst. Clean Energy, Jan. 2018.

International Journal of Engineering
E-mail: office@ije.ir
Web Site: http://www.ije.ir